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Journal articles on the topic 'Flue gas temperature'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Deng, Xiaochuan, Fengchang Sun, Zhonghua Bai, et al. "Flow field optimizing study of low temperature economizer in a coal-fired boiler." E3S Web of Conferences 261 (2021): 01040. http://dx.doi.org/10.1051/e3sconf/202126101040.

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The complex structure of double inlet gas flue has a significant influence on gas flow field distribution in a 1000MW coal-fired boiler’s low temperature economizer. In order to optimize gas flow field of the low temperature economizer with double inlet gas flues and reduce its failure rate, this paper presents a flow field simulation of the low temperature economizer based on the computational fluid dynamics (CFD). This numerical simulation was operated by using porous media model instead of the complex structure inside heat exchanger and the standard k-epsilon model. Velocity contours of a s

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2

Liu, Jiayou, and Fengzhong Sun. "Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control." Energies 12, no. 4 (2019): 706. http://dx.doi.org/10.3390/en12040706.

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Controlling the exhaust gas temperature (EGT) of coal–fired boilers at a reasonable value is beneficial to ensuring unit efficiency and preventing acid corrosion and fouling of tail heating surfaces in power plants. To obtain the operation regulation of coupled high–low energy flue gas waste heat recovery system (CWHRS) under a given EGT, experimental equipment was designed and built. Experiments were carried out to maintain the exhaust gas temperature under different flue gas flow, flue gas temperature and air temperature conditions. As the flue gas flows, the flue gas temperatures and air te

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3

Wang, Fu Zhen, Shi Liu, Ji Xu Shao, and Xiao Chen Ren. "Numerical Research of Inlet Temperatures Influence on Combustion Characteristics in Micro Gas Tuebine's Oxygen Enriched Combustor." Applied Mechanics and Materials 494-495 (February 2014): 701–5. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.701.

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Keeping exhaust gas temperature constant in oxygen enriched and flue gas circulating Micro Gas Turbine, Numerical Research is carried on to study inlet temperatures influence on combustion characteristics. Simulation shows that along with increase of methanes temperature, combustion efficiency increase slightly, uniformity coefficient of outlet temperature decreases, total pressure recovery coefficient decreases, content of carbon monoxide and methane in outlet gas decrease. However, when inlet methanes temperature exceed 100 °C, content of NOx increase rapidly in flue gas. The simulation resu

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4

Xiao, Hai Ping, Lin Dong, Gao Yan Han, and Xiang Ning. "Influence of Gas-Gas Heater on Wet Flue Gas Desulfuration." Advanced Materials Research 986-987 (July 2014): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.92.

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Material balance calculation was adopted to a wet flue gas desulfurization (WFGD) system for exploring impacts of gas-gas heater (GGH). Effects of GGH on flue and water consumption were analyzed. Results showed that inlet flue temperature of desulfurization tower reduced by 3.4 °C at 100% load after installation of GGH. Exhausted gas temperature of system increased by 34.9°C. The heat release of original flue in desulfurization tower reduced by 43.72%. Plume rise height was significantly improved. Water evaporation in desulfurization tower declined by 42.07%.Amount of addendum water reduced by

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5

Liu, Jiayou, Xiaoyun Gong, Wenhua Zhang, Fengzhong Sun, and Qingbiao Wang. "Experimental Study on a Flue Gas Waste Heat Cascade Recovery System under Variable Working Conditions." Energies 13, no. 2 (2020): 324. http://dx.doi.org/10.3390/en13020324.

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Recovering flue gas waste heat is beneficial to improving the unit efficiency in power plants. To obtain the change rules of performance parameters of a flue gas waste heat cascade recovery system (FWCRS) under variable working conditions, an experiment bench was designed and built. The variation laws of the inlet temperature and exhaust flue gas temperature of a low temperature economizer (LTE), the inlet and outlet air temperature of an air preheater (AP), the heat exchange quantities of the AP, LTE, and front-located air heater and an additional economizer (AE), as well as the waste heat re

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6

Chen, Bao Kui, and Feng Zhong Sun. "Research on Thermal Properties of Two Phase in a Flue Gas Desulfurization Wet Scrubber." Advanced Materials Research 1092-1093 (March 2015): 529–33. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.529.

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A mathematical model was established to predict heat and mass transfer in a flue gas desulfurization scrubber under stable operation condition. Thermal properties of liquid and gas phase were studied. The temperature calculation formula of liquid was presented which is in alignment with the operation parameters. The distribution of temperature and humidity of out flue gas is analyzed through MATLAB software. The results show that thermal properties of outlet flue gas are only related to temperature, humidity, and liquid-to-gas ratio of inlet flue gas. With the increase of temperature and humid

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7

Dzurenda, Ladislav, and Adrián Banski. "Dependence of the boiler flue gas losses on humidity of wood biomass." Archives of Thermodynamics 36, no. 4 (2015): 77–86. http://dx.doi.org/10.1515/aoter-2015-0034.

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Abstract The paper analyzes the influence of humidity of combusted wood biomass on the flue gas losses. A mathematical relation between flue gas losses of the boiler on wood biomass humidity is presented as well as temperature of flue gas emitted from the boiler into the atmosphere. The limits of model application for the humidity of wood biomass falls into the interval 10–60% whereas the range of temperatures of flue gases emitted from the boiler to the atmosphere is 120–200 °C. The influence of the humidity of wood biomass has an adverse effect on increasing the extent of the boiler flue gas

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8

Liu, Yan Feng, Shi Ping Li, and Xiang Hong Li. "Energy-Saving Analysis of 215MW Cogeneration Boiler Adding Low Temperature Economizer." Applied Mechanics and Materials 448-453 (October 2013): 2777–80. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2777.

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A 215MW cogeneration B&W670/13.7-M type high-pressure natural circulation boilers, the exhaust gas temperature is set as 143 °C, while in the actual operation, the average exhaust gas temperature is 155 °C, and when the unit is running at full capacity in summer the highest exhaust gas temperature is 169.6 °C. In order to satisfy the normal operating temperature of bag filter in summer peak load, and recover low temperature waste heat of fule gas, low temperature economizer is added to the thermal system. Therefore, low-temperature economizers are respectively added in four flues which are

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9

He, Jianle, Dong Guo, Jianli Zhang, Pengfeng Yu, Mengsong Shen, and Guangxue Zhang. "Analysis of Ignition Characteristics and Influencing Factors of Combustible Fly Ash in Boiler Start-Up Stage Flue Gas." Energies 16, no. 17 (2023): 6114. http://dx.doi.org/10.3390/en16176114.

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In order to realize the full-time denitration of a boiler, high-temperature flue gas needs to be introduced when SCR is conducted during the boiler start-up stage, and there is a fire risk due to the presence of combustible fly ash at this time. Therefore, research on reburning and the explosion risk of tail flue gas encountering high-temperature flue gas during start-up and shutdown was carried out. A small testbed was designed to record the temperature of the flue gas and the composition of the flue gas before and after the test, and the ignition characteristics of combustible fly ash in the

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10

Sobota, Tomasz, Dawid Taler, Mariusz Granda, and Magdalena Szymkiewicz. "CFD modelling of the air preheater fired with gas mixture to find the cause of the preheater damage." E3S Web of Conferences 551 (2024): 01001. http://dx.doi.org/10.1051/e3sconf/202455101001.

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Since various fuels, such as natural gas, blast furnace gas, coke oven gas, and a mixture of the three, are burned in the boiler, there is a danger of corrosion caused by sulphuric acid. Sulphur dioxide produced after combustion and condensed water vapour from flue gases on cold tube surfaces form sulphuric acid. Sulphuric acid solution flowing down the vertical tubes of the air heater causes corrosion not only of the air heater tubes but also of the horizontal water heater tubes located below. A simulation of the flow and heat exchange on the flue gas and air sides was performed to determine

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11

Lv, Tai, and Li Meng Liu. "Simulation on Flue Gas Pretreatment of Carbon Dioxide Capture Based on Aspen Plus Software." Applied Mechanics and Materials 675-677 (October 2014): 563–67. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.563.

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Using process software Aspen Plus of coal-fired power plant carbon dioxide capture flue gas pretreatment system simulation, studied the flue gas quantity、packing layer height、absorbent in quantity and absorbent in temperature, influence on the content of SO2 and cooling in the flue gas outlet. The results showed that the content of SO2 and temperature in the flue gas outlet, increase with increasing the flue gas quantity, decrease with increasing the packing layer height and absorbent quantity, increase with the rising of absorbent temperature.

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12

Yan, Xinrong, Jianle He, Dong Guo, et al. "Continuous DeNOx Technology for Improved Flexibility and Reliability of 1000 MW Coal-Fired Power Plants: Engineering Design, Optimization, and Environmental Benefits." Processes 12, no. 1 (2023): 56. http://dx.doi.org/10.3390/pr12010056.

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This study endeavors to enhance the operational efficiency of extant coal-fired power plants to mitigate the adverse environmental impact intrinsic to the prevalent utilization of coal-fired power generation, which is particularly dominant in China. It focuses on the assessment and optimization of continuous denitrification systems tailored for a 1000 MW ultra-supercritical pulverized coal boiler. The extant denitrification framework encounters challenges during startup phases owing to diminished selective catalytic reduction (SCR) inlet flue gas temperatures. To ameliorate this, three retrofi

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13

Coccia, Valentina, Ramoon Barros Lovate Temporim, Leandro Lunghi, et al. "Design and Performance Analysis of a Small-Scale Prototype Water Condensing System for Biomass Combustion Flue Gas Abatement." Sustainability 16, no. 12 (2024): 5164. http://dx.doi.org/10.3390/su16125164.

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This article outlines the design and performance of a flue gas condensation system integrated with a biomass combustion plant. The system comprises a biomass plant fuelled by wood chips, generating flue gases. These gases are condensed via a double heat exchanger set-up, extracting water and heat to reduce concentrations of CO, CO2, and NOx while releasing gases at a temperature close to ambient temperature. The 100 kW biomass plant operates steadily, consuming 50 kg of wood chips per hour with fuel energy of 18.98 MJ/kg. Post combustion, the gases exit at 430 °C and undergo two-stage cooling.

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14

Wang, Meng, Tianyuan Jia, Xiaoan Song, Lijie Yin, Dezhen Chen, and Kezhen Qian. "CFD–DEM Simulation of Heat Transfer and Reaction Characteristics of Pyrolysis Process of MSW Heated by High-Temperature Flue Gas." Processes 12, no. 2 (2024): 390. http://dx.doi.org/10.3390/pr12020390.

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Pyrolysis is a promising disposal method for municipal solid waste (MSW) due to the high-value utilization of the organic components of MSW. Traditional indirect heating has low heat transfer efficiency and requires an increase in the heat exchange area. In this study, a refined numerical simulation model for the pyrolysis of four typical MSW components with high-temperature flue gas was established to study the influence of flue gas on the heat transfer and reaction characteristics of MSW. The temperature distribution and particle size change in different components were obtained, and the eff

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15

Kurkus-Gruszecka, Michalina, Piotr Krawczyk, and Janusz Lewandowski. "Numerical Analysis on the Flue Gas Temperature Maintenance System of a Solid Fuel-Fired Boiler Operating at Minimum Loads." Energies 14, no. 15 (2021): 4420. http://dx.doi.org/10.3390/en14154420.

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Currently, energy policy is associated with the increase in the share of renewable sources in systemic energy production. Due to this trend, coal-fired power units must increase their work flexibility. Adapting a coal power plant to work with a lower load often causes the issue of maintaining the temperature before the selective catalytic reduction (SCR) installation at a sufficiently high level. This paper presents a CFD analysis of the mixing area of two flue gas streams before the SCR installation with various methods for mixing flue gas streams. The novelty of the work is mixing the flue g

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16

Han, Jian Wei, Wei Lv, Jian Min Gao, Qian Du, Chao Cheng, and Xi Yu Lin. "Mechanism and Condensation Heat Transfer Characteristics Research on the Depth of the Flue Gas Heat Recovery from Burning Natural Gas." Applied Mechanics and Materials 687-691 (November 2014): 637–40. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.637.

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This article probe into the depth of the flue gas heat recovery from the burning of natural gas. It explore the mechanism of the way to control the temperature of the flue gas from the burning of natural gas below the dew point temperature. It expounds the absorption way of sensible heat and latent heat from the vaporization in flue gas. After the study on the condensation heat transfer characteristics of the flue gas from the burning of natural gas, we can find that the dropwise condensation is more conducive to the heat exchange between flue gas and cooling water. And to find the method of d

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17

Eldredge, T. V., D. J. Benton, and J. W. Hodgson. "An Investigation of the Effects of Flue Gas Injection on Natural Draft Cooling Tower Performance." Journal of Engineering for Gas Turbines and Power 119, no. 2 (1997): 478–84. http://dx.doi.org/10.1115/1.2815599.

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This paper addresses an investigation of flue gas injection on natural draft cooling tower performance through numerical simulation. The control volume finite difference method was used for discretizing the governing equations in axisymmetric form on a boundary-fitted grid. The five independent variables addressed in this study are flue gas flow rate, flue gas temperature, radial injection location, injection orientation, and liquid entrainment in the flue gas. The flue gas temperature was found to have the most significant effect on tower performance (cold water temperature), because it stron

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18

Poškas, Robertas, Arūnas Sirvydas, Vladislavas Kulkovas, et al. "An Experimental Investigation of Water Vapor Condensation from Biofuel Flue Gas in a Model of Condenser, (2) Local Heat Transfer in a Calorimetric Tube with Water Injection." Processes 9, no. 8 (2021): 1310. http://dx.doi.org/10.3390/pr9081310.

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In order for the operation of the condensing heat exchanger to be efficient, the flue gas temperature at the inlet to the heat exchanger should be reduced so that condensation can start from the very beginning of the exchanger. A possible way to reduce the flue gas temperature is the injection of water into the flue gas flow. Injected water additionally moistens the flue gas and increases its level of humidity. Therefore, more favorable conditions are created for condensation and heat transfer. The results presented in the second paper of the series on condensation heat transfer indicate that

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19

Xu, Gang, Yao Tian, Xing Yuan, and Yong Ping Yang. "A Model for Calculating the Outlet Flue Gas Temperature of FGD Absorption Tower." Applied Mechanics and Materials 130-134 (October 2011): 3812–16. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.3812.

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Theoretical model for calculating the outlet flue gas temperature of limestone-gypsum wet flue gas desulfurization (FGD) absorption tower is important for water consumption calculation. In this paper, the energy balance in the spray zone is analyzed and a model for calculating the outlet flue gas temperature of FGD absorption tower is proposed. An example computation of the outlet flue gas temperature of a typical 600MW class unit’s operation data is introduced, the result has verified the model. A further study of significance analysis has then been made to analyze and simplify the model.

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20

Xu, Changchun, Min Xu, Ming Zhao, et al. "Performance improvement of a 330MWe power plant by flue gas heat recovery system." Thermal Science 20, no. 1 (2016): 303–14. http://dx.doi.org/10.2298/tsci140104099x.

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In a utility boiler, the most heat loss is from the exhaust flue gas. In order to reduce the exhaust flue gas temperature and further boost the plant efficiency, an improved indirect flue gas heat recovery system and an additional economizer system are proposed. The waste heat of flue gas is used for high-pressure condensate regeneration heating. This reduces high pressure steam extraction from steam turbine and more power is generated. The waste heat recovery of flue gas decreases coal consumption. Other approaches for heat recovery of flue gas, direct utilization of flue gas energy and indir

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21

Lepiksaar, Kertu, Anna Volkova, Pavel Ruseljuk, and Andres Siirde. "The effect of the District Heating Return Temperature Reduction on Flue Gas Condenser Efficiency." Environmental and Climate Technologies 24, no. 3 (2020): 23–38. http://dx.doi.org/10.2478/rtuect-2020-0083.

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AbstractThe use of flue gas condensers proved to be effective in increasing boiler efficiency and achieving primary energy savings. The transition to the 4th generation district heating will lead to temperature reduction in district heating networks. The aim of this study is to determine the effects of the reduction in the district heating return temperature on flue gas condenser efficiency. Different DH return temperatures and fuel moisture contents were examined, and a calculation model was created. The results show that a reduction in district heating return temperature can lead to an incre

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22

Feng, Dongmei, Dongbing Dai, Peng Zhang, Siteng Li, and Zhengguang Liu. "Design of Flue Gas Eliminating White Monitoring System for Natural Gas Boiler." Journal of Physics: Conference Series 2395, no. 1 (2022): 012048. http://dx.doi.org/10.1088/1742-6596/2395/1/012048.

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Abstract Aiming at the phenomenon that the flue gas discharged from a heating boiler contains waste heat and harmful gas, which causes energy waste and air pollution, the flue gas eliminating white monitor system based on Programmable Logic Controller (PLC) and MCGS configuration technology is designed. The system structure design is introduced, including the system hardware design, software design, monitoring screen design, and debugging of the physical system. In view of the problem that the waste heat of 45 °C still exists in the flue gas after being treated by the primary heat exchanger, t

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23

Gres, L. P., O. V. Gupalo, V. I. Vereshchak, O. O. Yeromin, Yu M. Radchenko, and D. V. Vereshchak. "Increasing the heating temperature of blast-furnace air by improving the system of heat recovery of flue gases of hot-blast stoves." Fundamental and applied problems of ferrous metallurgy, no. 38 (2024): 16–25. https://doi.org/10.52150/2522-9117-2024-38-16-25.

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Hot-blast stoves heated by blast furnace gas are used to heat blast furnace air. Increasing the combustion temperature of blast furnace gas by raising the temperature of combustion components before hot-blast stoves allows an increase in the heating temperature of blast-furnace air. However, the relatively low temperature of the exhaust flue gases of hot-blast stoves limits the possibility of increasing the heating temperature of combustion components. The research aims to overcome this limitation by equipping the heat recovery system of flue gases with a heat generator heated by blast furnace

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Gu, Zhien, Shi He, Xiang Li, et al. "Hundred-Watt Implantable TEG Module for Large-Scale Exhaust Gas Waste Heat Recovery." Energies 17, no. 3 (2024): 665. http://dx.doi.org/10.3390/en17030665.

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In this study, we have designed and developed an implantable thermoelectric generator (TEG) module tailored for large-scale flue gas waste heat recovery. We also have established a test stand to simulate diverse operational conditions, and systematically examined the influence of different operating conditions, including flue gas temperature, flue gas velocity, and cooling water temperature, on the electrical performance of the TEG module. When the flue gas temperature is 139 °C, the flue gas flow rate is 3.4 m/s, and the cooling water temperature is 20 °C, the TEG module operates at its peak

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25

Glavan, Ivica, Igor Poljak, and Mate Kosor. "A gas turbine combustion chamber modeling by physical model." Pomorstvo 35, no. 1 (2021): 30–35. http://dx.doi.org/10.31217/p.35.1.4.

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The validity of the gas turbine unit model largely depends on the accuracy of the flue gas temperature value calculation at the gas turbine inlet (TIT). This temperature is determined by the maximum combustion temperature. In variable running mode, the temperature value is regulated by changing the ratio of air and fuel at the inlet to the combustion chamber. The paper presents a model of a gas turbine combustion chamber using Modelica, an object-oriented language for modeling complex physical systems with the aim of determining the temperature of combustion flue gases, specific heat capacity,

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26

Kryvda, V., O. Brunetkin, K. Beglov, T. Markolenko, and I. Lutsenko. "Method of controlling the volume of combustion products at different boiler loads." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 1 (February 29, 2024): 100–104. http://dx.doi.org/10.33271/nvngu/2024-1/100.

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Purpose. Development of a method for controlling the volume of combustion products at different load of boiler equipment. Achieving the objective may allow controlling the flue gas temperature and, consequently, the efficiency to increase it. Methodology. Control of the flue gas volume value on the basis of determining the appropriate composition of the fuel gas mixture. Findings. The effect of flue gas temperature increase at use of fuel gases of lower calorific value and increase in ballast gases quantity is revealed. The latter can be the air used as an oxidising agent at its considerable e

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Zhang, Chenghu, Dezhi Zou, Xinpeng Huang, and Weijun Lu. "Coal-Fired Boiler Flue Gas Desulfurization System Based on Slurry Waste Heat Recovery in Severe Cold Areas." Membranes 12, no. 1 (2021): 47. http://dx.doi.org/10.3390/membranes12010047.

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To reduce operating costs on the basis of ensuring the desulfurization efficiency in a wet flue gas desulfurization system, a theoretical model was put forward, and a calculation method was set up. Correlations between reaction zone height, flue gas inlet temperature, slurry inlet temperature, gas–liquid ratio and desulfurization efficiency were found. Based on the heat and mass transfer model of the spray tower, the integrated system of desulfurization tower and open slurry pool and the flue gas desulfurization-waste heat recovery system were established. Additionally, the effect of outdoor w

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28

Xue, Zhipeng, Hao Chen, and Minmin Zhao. "Combined Removal Of NOx And SO2 From Flue Gas At Low Temperature." E3S Web of Conferences 53 (2018): 04038. http://dx.doi.org/10.1051/e3sconf/20185304038.

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A method was proposed to remove NOx and SO2 in flue gas by using the sulfinyl functional group as a catalyst. Ozone is introduced into the flue gas to oxidize NO. Soluble NO2 and SO2 reacted with ammonia to form ammonium sulfate and ammonium nitrate, which were the raw material of the compound fertilizer. A small pilot is built in a container that can be easily transported to power plant and extracts the actual flue gas directly from the gas duct. In order to obtain the best the SO2 and NOX removal efficiency in this experiment, many parameters were changed. Such as flue gas flow, ozone / NOX

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Tekleyohanis, Tsiye, and Abebayehu Tekleye. "Optimizing Industrial Effluent Flue Gas as Source of Energy for Charcoal Production." International Journal of Energy and Environmental Science 9, no. 1 (2024): 9–19. http://dx.doi.org/10.11648/j.ijees.20240901.12.

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This research suggests a unique way to produce charcoal utilizing industrial flue gas as an energy source. The process entails gathering, cleaning, and transporting the flue gas to a pyrolysis reactor where it is used to carbonize and heat biomass. The paper outlined the design of various components, such as the heat exchanger, pyrolysis reactor, and flue gas filter. It specified that the flue gas temperatures in the glass, pulp and paper, and alcohol industries typically range from 400-500°C, 200-500°C, and 150-300°C, respectively. Furthermore, the chemical compositions of these industries we

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Vilardi, Giorgio, and Nicola Verdone. "Exergy Analysis of Waste Incineration Plant: Flue Gas Recirculation and Process Optimization." Proceedings 58, no. 1 (2020): 29. http://dx.doi.org/10.3390/wef-06923.

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Simulations of two incineration processes, with and without flue gas recirculation, have been carried out performing an exergy analysis to investigate the most critical equipment unit in terms of second-law efficiency. Flue gas from the economizer outlet is employed to partially replace secondary combustion air to reduce, at the same time, incinerator temperature and oxygen concentration. Conversely, in the proposed configuration, the recirculated flue gas flow rate is used to control incinerator temperature, while the air flow rate is used to control the oxygen content of the fumes, leaving t

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31

Zhao, Ning, Yongxin Feng, Debo Li, and Limei Chen. "Economic Analysis of Atomization Drying of Concentrated Solution Based on Zero Discharge of Desulphurization Wastewater." Water 14, no. 2 (2022): 148. http://dx.doi.org/10.3390/w14020148.

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With the improvement of environmental protection requirements, more and more attention has been given to desulphurization wastewater with zero discharge in coal power plants. Atomization drying is part of the main zero discharge technologies at present. Economic analysis of the atomization drying of desulphurization wastewater is beneficial to the formulation of an appropriate operation scheme and to the reduction of operation costs. The economic analysis and sensitivity analysis of different operating conditions such as unit load, the handling capacity of concentrates, and the temperature of

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32

Han, Jing, Man Yin Hu, and Xiu Hong Wang. "Computer Simulation about Influence of Flue Gas Recycle and Subsection Air on Nitrogen Oxide Formation to Chain Boiler." Advanced Materials Research 171-172 (December 2010): 702–5. http://dx.doi.org/10.4028/www.scientific.net/amr.171-172.702.

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Numerical simulation is used to study the combustion process，temperature distridution and NOx emission for a 10t/h chain boiler with and without flue gas recycle. And at the same time,it is constrasted that differences when flue gas is recycled to the primary wind inlet and to secondry wind inlet.The results show the temperature distridution decreased with flue gas recycle,so there is less NOx emission.And when flue gas is recycled to secondry wind inlet ,the NOx emission dropped mostly. The result offer a reference to design and operate a chain boiler.

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Ji, Guo Jian, Xiao Qing Zhou, Jia Hua Cheng, Bei Bei Lu, and Qun Feng Zou. "Experimental study of the effect of different heat transfer plates on the heat transfer characteristics of flue gas condensation." High Temperatures-High Pressures 53, no. 4 (2024): 339–55. http://dx.doi.org/10.32908/hthp.v53.1541.

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To mitigate greenhouse gas emissions, flue gas “whitening” is conducted to promote energy conservation and emission reduction. Based on a large channel plate heat exchanger with different heat exchange plates, this paper establishes a rotary wind tunnel condensation heat exchange experimental platform to measure the physical parameters of inlet and outlet wet flue gas and obtain the average heat transfer coefficient of different plate structures. By changing the operating parameters of wet flue gas, the influencing factors of the condensation heat exchange process of the wet flue gas are studi

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Wen, Wu Qi, Shi Ping Jin, Su Yi Huang, et al. "Stability Experimental Study on High Temperature and Oxygen-Containing Flue Gas." Advanced Materials Research 512-515 (May 2012): 1307–10. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1307.

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During lignite pyrolysis process, there will produce large amounts of gas which is low calorific value, combustion difficult. This paper creatively put forward a program: high temperature and oxygen-containing flue gas of coal-fired mix combustion with low calorific value gas. Compared to mixing high calorific value fuel, the distinguishing feature of this program is ultra-low cost, and technically feasible. In this scheme, the stability of high-temperature and oxygen-containing flue gas is key technology. Through coal-fired experiments, we obtained generation rule of high-temperature and oxyg

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Cheng, Zhang, and Chen. "Experimental Study on Water Recovery from Flue Gas Using Macroporous Ceramic Membrane." Materials 13, no. 3 (2020): 804. http://dx.doi.org/10.3390/ma13030804.

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In this work, a ceramic membrane tube with a pore size of 1 μm was used to conduct experimental research on moisture and waste heat recovery from flue gas. The length, inner/outer diameter, and porosity were 800 mm, 8/12 mm, and 27.2%, respectively. In the experiments, the flue gas, which was artificially prepared, flowed on the shell side of membrane module. The water coolant passed through the membrane counter-currently with the gas. The effects of flue gas flow rate, flue gas temperature, water coolant flux, and water coolant temperature on the membrane recovery performance were analyzed. T

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Mohd Yusoff, Mohd Hizami, Ein K. Nyunt, Muhammad Roil Bilad, et al. "Hybrid Membrane Distillation and Wet Scrubber for Simultaneous Recovery of Heat and Water from Flue Gas." Entropy 22, no. 2 (2020): 178. http://dx.doi.org/10.3390/e22020178.

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Flue gas contains high amount of low-grade heat and water vapor that are attractive for recovery. This study assesses performance of a hybrid of water scrubber and membrane distillation (MD) to recover both heat and water from a simulated flue gas. The former help to condense the water vapor to form a hot liquid flow which later used as the feed for the MD unit. The system simultaneously recovers water and heat through the MD permeate. Results show that the system performance is dictated by the MD performance since most heat and water can be recovered by the scrubber unit. The scrubber achieve

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Majid, M. R., and Prabowo. "Numerical Study of the Effect of Damper Opening Angle and Flue Gas Temperature on Temperature Distribution in Heat Recovery Steam Generator (HRSG)." Journal of Physics: Conference Series 2942, no. 1 (2025): 012006. https://doi.org/10.1088/1742-6596/2942/1/012006.

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Abstract Combined Cycle Gas Turbine (CCGT) utilises the hot flue gas from the gas turbine to produce steam in the Heat Recovery Steam Generator (HRSG). The steam from the HRSG is then used to generate electricity in the steam turbine. At PLTGU Tanjung Uncang Batam, the exhaust gas temperature when the damper is open must be below 400°C. However, the turbine gas with an initial load of 5 MW has an exhaust gas temperature of 560°C - 580°C. It is necessary to remove the turbine gas load or Full Speed No Load (FSNL) to reduce the inlet temperature of the turbine gas. The analysis was conducted usi

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Kon, Okan, and İsmail Caner. "Investigation of Heat Recovery Potential According to Flue Gas Field Measurements in Solid Fuel-Fired Buildings with District and Central Heating Systems." Processes 10, no. 10 (2022): 2040. http://dx.doi.org/10.3390/pr10102040.

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In this study, flue gas heat recovery potential was determined by using the flue gas measurements from boilers of buildings with solid fuel-fired district and central heating systems in Balikesir, Turkey. Potential flue gas heat recovery potential in terms of energy savings were examined. The potential of heating the preheated water and combustion air supplied to the boiler was analyzed. Thus, the efficiency of the heating system was increased, and energy savings were achieved by providing fuel savings. In order to reduce the flue gas temperature in solid fuel-fired boilers, the acidification

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Tian, Zhong Jun, Shi Ping Jin, Tan Li, Zhen Biao Hao, and Wu Qi Wen. "The Feasibility Analysis of Applying SCR Technology to Regenerative Combustion System." Advanced Materials Research 610-613 (December 2012): 1747–50. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.1747.

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The regenerative combustion technology has been widely used in the recovery of flue gas waste heat, but the denitration is not considered. This article is based on the comprehensive application of the Selective Catalytic Reduction(SCR) technology and the regenerative combustion technology to recycling waste heat and removing NOx from flue gas. In many industrial heating processes, the temperature of flue gas falls from above 1000°C to the ambient temperature (50°C-100°C) along regenerators, while the temperature window of most catalysts ranges from 200°C to 450°C, meanwhile catalysts and regen

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Teng, Da, Ang Li, Tielin Li, Liansuo An, Guoqing Shen, and Shiping Zhang. "Experimental study on waste heat recovery characteristics of inorganic ceramic membrane flue gas." Thermal Science and Engineering 5, no. 1 (2022): 51. http://dx.doi.org/10.24294/tse.v5i1.1529.

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The wet saturated flue gas discharged by coal-fired utility boilers leads to a large amount of low-temperature wasteheat loss. Inorganic ceramic membrane is acid-base resistant and has strong chemical stability. It is an ideal material forrecovering low-temperature waste heat from flue gas. The experiment of waste heat recovery of flue gas was carried outwith inorganic ceramic membrane as the core, and the characteristic parameters of low-temperature flue gas at the tailof the boiler were analyzed; taking 316 L stainless steel as the comparative object, the strengthening effect of inorganiccer

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Marczak-Grzesik, Marta, Stanisław Budzyń, Barbara Tora, Szymon Szufa, Krzysztof Kogut, and Piotr Burmistrz. "Low-Cost Organic Adsorbents for Elemental Mercury Removal from Lignite Flue Gas." Energies 14, no. 8 (2021): 2174. http://dx.doi.org/10.3390/en14082174.

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The research presented by the authors in this paper focused on understanding the behavior of mercury during coal combustion and flue gas purification operations. The goal was to determine the flue gas temperature on the mercury emissions limits for the combustion of lignites in the energy sector. The authors examined the process of sorption of mercury from flue gases using fine-grained organic materials. The main objectives of this study were to recommend a low-cost organic adsorbent such as coke dust (CD), corn straw char (CS-400), brominated corn straw char (CS-400-Br), rubber char (RC-600)

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Wang, Qing, Hai Bo Long, Hong Peng Liu, and Zhi Feng Wang. "Process Simulation of Oil Shale Circulating Fluidized Bed Boiler Based on Aspen Plus." Advanced Materials Research 614-615 (December 2012): 49–52. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.49.

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A model for the combustion of oil shale in the 65t/h circulating fluidized bed (CFB) boiler was developed, consisting of oil shale combustion, steam-water and ash circulation system, calculating the O2 and RO2 content of flue gas emission under three kinds of oil shale combustion in 65t/h CFB boiler. The calculated results indicate that the simulation values are consistent with the experimental values. Effect of boiler load on the temperature of furnace, flue gas emission, inlet and outlet flue gas of economizer was discussed based on the model. Boiler load on the increase results in a increas

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Lebel, Florimonde, Christophe Rapin, Jean François Mareche, et al. "Development of a Laboratory-Scale Pilot for Studying Corrosion on MSWI Heat Exchangers." Materials Science Forum 595-598 (September 2008): 271–80. http://dx.doi.org/10.4028/www.scientific.net/msf.595-598.271.

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The efficiency of Waste-to-Energy (W-t-E) boilers is affected by fireside corrosion of the heat exchangers that involve unexpected shutdown of facilities for repairs and limit the increase of steam conditions used to produce electricity. The parameters governing fireside corrosion are various and mechanisms are very complex, nevertheless, they are relatively well documented in the literature. In this paper, a laboratory-scale corrosion pilot, which reproduces MSWI boilers conditions, is described. The specificity of our approach includes simultaneous simulation of the temperature gradient at f

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Liu, Haipeng, Qin Zhang, Hanjie Gao, and Hongying Yang. "Generation and Inhibition of SO3 in Lead Smelting Flue Gas." Applied Sciences 15, no. 8 (2025): 4449. https://doi.org/10.3390/app15084449.

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The thermodynamic equilibrium of the gas-phase system in lead smelting flue gas was studied using FactSage 8.2 software, and the effects of temperature, the main components of the gas phase, and other factors on the SO3 content in the equilibrated flue gas were investigated. In addition, experimental research was conducted on a solid-phase catalysis experimental platform to investigate the effect of lead smelting ash on SO2 catalytic oxidation. The results show that temperature and initial O2 content in flue gas have a significant impact on the equilibrium concentration of SO3, while the initi

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Wang, Yungang, Jian Jiao, Yanjun Dai, Zhiwu Ke, Qinxin Zhao, and Feixiang Li. "Study on heat transfer characteristics of flue gas condensation in narrow gap heat exchangers." Thermal Science, no. 00 (2023): 117. http://dx.doi.org/10.2298/tsci221125117w.

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Flue gas after wet desulfurization contains a large quantity of water vapor, as well as a small amount of fine particulate matter, acid and other pollutants. Direct emissions will cause haze and environmental pollution. Flue gas condenser can effectively recover latent heat of vaporization and remove these pollutants. However, the traditional flue gas condenser has disadvantages such as large volume, low heat exchange efficiency and easy blockage. To overcome these problems, a new type narrow gap heat exchanger, which is easy to detach and clean, is proposed. Then, the flue gas condensation ch

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Goričanec, Darko, Igor Ivanovski, Jurij Krope, and Danijela Urbancl. "The Exploitation of Low-Temperature Hot Water Boiler Sources with High-Temperature Heat Pump Integration." Energies 13, no. 23 (2020): 6311. http://dx.doi.org/10.3390/en13236311.

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The article presents an original and innovative technical solution for the exploitation of low-temperature excess heat from hot water boilers that use gas or liquid fuel for the needs of high-temperature heating in buildings or in industry. The primary fuel efficiency used for hot water boilers can be significantly increased by utilizing the excess low-temperature heat of flue gases that are discharged into the environment and thus also reduce CO2 emissions. Hot water systems usually operate at higher temperatures of the heating water, which is transported to the heat consumer via supply pipe,

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Zhou, Jian An, Sheng Jun Zhong, Jun Xiang Dang, and Xu Li. "Experimental Investigation of Sintering Flue Gas Desulfurization with Steel Slag Using Dry CFB Method." Applied Mechanics and Materials 71-78 (July 2011): 2547–50. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.2547.

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SO2 Emission of sintering flue gas accounts for more than 70% of total SO2 emission of steel industry. The purpose of this paper was to use steel slag for desulfurization of sintering flue gas. Based on traditional circulating fluidized beds (CFB) for flue gas desulfurization (FGD), a new dry digestion CFB-FGD process was developed. The new process eliminated the traditional digestion procedure, and the functions of the reactor include preliminary dust collection, digestion and desulfurization. An pilot CFB installation with maximum flow rate of 8000 Nm3/h for flue gas desulfurization was esta

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Ma, Lei, Feng-zhong Sun, Zhi-min Li, Pei Chen, and Fei Li. "The Coupling Effect Research of Ash Deposition and Condensation in Low Temperature Flue Gas." Discrete Dynamics in Nature and Society 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/8352317.

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Ash deposition is a key factor that deteriorates the heat transfer performance and leads to higher energy consumption of low pressure economizer working in low temperature flue gas. In order to study the ash deposition of heat exchange tubes in low temperature flue gas, two experiments are carried out with different types of heat exchange tubes in different flue gas environments. In this paper, Nusselt Number Nu and fouling factorεare calculated to describe the heat transfer characteristics so as to study the ash deposition condition. The scanning electron microscope (SEM) is used for the anal

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Tao, Lei, Xiao Yuan, Sen Huang, Nannan Liu, Na Zhang, and Bingchao Li. "3D experimental investigation on enhanced oil recovery by flue gas assisted steam assisted gravity drainage." Energy Exploration & Exploitation 39, no. 4 (2021): 1162–83. http://dx.doi.org/10.1177/01445987211006555.

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Flue gas assisted steam assisted gravity drainage (SAGD) is a frontier technology to enhance oil recovery for heavy oil reservoirs. The carbon dioxide generated from the thermal recovery of heavy oil can be utilized and consumed to mitigate climate warming for the world. However, most studies are limited to merely use numerical simulation or small physical simulation device and hardly focus on large scale three-dimensions experiment, which cannot fully investigate the enhanced oil recovery (EOR) mechanism of flue gas assisted SAGD, thus the effect of flue gas on SAGD production performance is

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Poškas, Robertas, Arūnas Sirvydas, Vladislavas Kulkovas, et al. "Flue Gas Condensation in a Model of the Heat Exchanger: The Effect of the Cooling Water Flow Rate and Its Temperature on Local Heat Transfer." Applied Sciences 12, no. 24 (2022): 12650. http://dx.doi.org/10.3390/app122412650.

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In boiler houses, the biggest heat energy losses are caused by flue gas being released into the atmosphere. Installation of condensing heat exchangers allows reducing the temperature of the flue gas being released, condensation of water vapor, and, thus, efficient use of the waste heat. There are many investigations of average heat transfer in different types of condensing heat exchangers. They indicate also that the cooling water flow rate and its temperature are important parameters defining water vapor condensation efficiency. Investigations of local condensation heat transfer in condensing

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