Relevant bibliographies by topics / Surface coal gasification

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Surface coal gasification'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Surface coal gasification"

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Yin, Zhenyong, Hao Xu, Yanpen Chen, and Tiantian Zhao. "Coal char characteristics variation in the gasification process and its influencing factors." Energy Exploration & Exploitation 38, no. 5 (2020): 1559–73. http://dx.doi.org/10.1177/0144598720935523.

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Underground coal gasification is a burgeoning coal exploitation technique that coal is directly converted into gaseous fuel by controlled combustion. In this paper, the gasification experiments of Inner Mongolia lignite, Xinjiang subbituminous coal, and Hancheng medium volatile bitumite were conducted respectively by using the tube furnace coal gasification experiment system. The gasification process was conducted under 3°C/min increment within the range of 600–900°C. The gas composition was analyzed by gas chromatography and the pore structure of the coal char was detected by low-temperature
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Rizkiana, Jenny, Ryzka Pranata, Hasna Nisrina Fauzi, Winny Wulandari, and Dwiwahju Sasongko. "Low Rank Coal Pre-treatment to Increase Its Reactivity Towards Gasification with Biomass." MATEC Web of Conferences 156 (2018): 03020. http://dx.doi.org/10.1051/matecconf/201815603020.

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Coal can be used to produce hydrogen through steam gasification process. Indonesia has abundant coal reserves and thus hydrogen production from coal is very attractive. However, steam gasification of coal usually requires high temperature due to its low volatile content. The use of catalyst, such as alkaline and alkaline earth metal (AAEM) may promote the hydrogen production. AAEM metal can be found in biomass and thus co-gasification of coal and biomass may become the attractive solution as the AAEM may volatilize during gasification and catalyze the coal when it attaches to the coal surface.
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Petrovic, David, Lazar Kricak, Milanka Negovanovic, et al. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification." Thermal Science 23, no. 6 Part B (2019): 4067–81. http://dx.doi.org/10.2298/tsci190725390p.

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In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for Serbia. The goal is to burn less coal, while simultaneously utilizing more gas from the onsite underground coal
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Liu, Lang, Qingrui Jiao, Jian Yang, Bowen Kong, Shan Ren, and Qingcai Liu. "Influences of Ash-Existing Environments and Coal Structures on CO2 Gasification Characteristics of Tri-High Coal." Processes 8, no. 11 (2020): 1367. http://dx.doi.org/10.3390/pr8111367.

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Two kinds of tri-high coals were selected to determine the influences of ash-existing environments and coal structures on CO2 gasification characteristics. The TGA results showed that the gasification of ash-free coal (AFC) chars was more efficient than that of corresponding raw coal (RC) chars. To uncover the reasons, the structures of RCs and AFCs, and their char samples prepared at elevated temperatures were investigated with SEM, BET, XRD, Raman and FTIR. The BET, SEM and XRD results showed that the Ash/mineral matter is associated with coal, carbon forms the main structural framework and
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Zha, Xiao Xiong, Hai Yang Wang, and Shan Shan Cheng. "Finite Element Analysis of the Subsidence of Cap Rocks during Underground Coal Gasification Process." Advanced Materials Research 859 (December 2013): 91–94. http://dx.doi.org/10.4028/www.scientific.net/amr.859.91.

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This paper discusses the possible surface subsidence and deformation of the overlying rock during the underground coal gasification (UCG) process, which is an important part of feasibility studies for UCG operations. First coal seam roof movement and surface subsidence in the shallow UCG process were simulated by a finite element model coupled with heat transfer module in COMSOL. Numerical results from this model were compared with and in good agreement to the existing studies. This was followed by the development of model for deeper coal seam cases. The comparison of the numerical results fro
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Green, Michael. "Recent developments and current position of underground coal gasification." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 1 (2017): 39–46. http://dx.doi.org/10.1177/0957650917718772.

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Underground coal gasification is a conversion and extraction process, for the production of useful synthetic product gas from an in-situ coal seam, to use in power generation, heat production or as a chemical feedstock. While many variants of the underground coal gasification process have been considered and over 75 trials performed throughout the world, the recent work has tended to focus on the control of the process, its environmental impact on underground and surface conditions and its potential for carbon capture and storage. Academic research has produced a set of mathematical models of
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Mortazavi, H. R., A. F. Emery, R. C. Corlett, and W. R. Lockwood. "The Effect of Moisture on the Structural Stability of a Coal Cavity." Journal of Energy Resources Technology 108, no. 3 (1986): 246–53. http://dx.doi.org/10.1115/1.3231273.

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The drying of coal and the associated thermal and moisture-induced stresses are examined with a numerical model to estimate the rate of surface regression in underground coal gasification. The model includes internal convection, diffusion, conduction and flow of liquid, vapor and gas. The structural failure is modeled by three different mechanisms based upon a strength reduction due to heating, drying, or crack formation. Using properties and boundary conditions appropriate to Western United States coal, the model predicts a regression rate which is in qualitative agreement with measured resul
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Syarif, Takdir, H. Sulistyo, Wahyudi B. Sediawan, and B. Budhijanto. "THE KINETICS OF CaO ASSISTED PATTUKKU CHARCOAL STEAM GASIFICATION." Reaktor 18, no. 1 (2018): 16. http://dx.doi.org/10.14710/reaktor.18.1.16-21.

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Abstract Coal is a solid fuel that can be converted into syngas through gasification process. To obtain optimum gasification process design and operation, in-depth understanding of the influential parameters is required. This study aims to investigate the effect of temperature on the gasification process and to obtain its kinetics parameters. The study was carried out in a tubular reactor equipped with a heater and a condenser. Steam was used as gasifying agent, while CaO was employed as a CO2 adsorbent. The charcoal from coal was subjected to gasification at temperatures of 600°C, 700°C, and
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Li, Han Xu, Fei Ma, Xin Sheng, and Ming Jun Ji. "Study on Fly Ash Adhesion Characteristics and Deposition Mechanism in Shell Coal Gasification Process." Advanced Materials Research 233-235 (May 2011): 789–93. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.789.

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This paper describes the characteristics and mechanism of fly ash deposited in Shell coal gasification process. The chemical composition, particle size distribution, surface topography and elemental composition of fly ash samples derived from coal A and coal B are studied by X-ray fluorescence spectrometer, JX-2000 microscopic image analyzer and computer controlled scanning electron microscopy (SEM/EDX) respectively. The results show that the differences in ash deposition characteristics result from the differences in surface properties and element composition of fly ash particles generated fr
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Jamróz, Dariusz, Tomasz Niedoba, Agnieszka Surowiak, and Tadeusz Tumidajski. "The Use of the Visualisation of Multidimensional Data Using PCA to Evaluate Possibilities of the Division of Coal Samples Space Due to their Suitability for Fluidised Gasification." Archives of Mining Sciences 61, no. 3 (2016): 523–35. http://dx.doi.org/10.1515/amsc-2016-0038.

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AbstractMethods serving to visualise multidimensional data through the transformation of multidimensional space into two-dimensional space, enable to present the multidimensional data on the computer screen. Thanks to this, qualitative analysis of this data can be performed in the most natural way for humans, through the sense of sight. An example of such a method of multidimensional data visualisation is PCA (principal component analysis) method. This method was used in this work to present and analyse a set of seven-dimensional data (selected seven properties) describing coal samples obtaine
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Dissertations / Theses on the topic "Surface coal gasification"

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Saha, Gautam. "The role of coal surface charge in catalyzed coal gasification." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 1992. http://digitalcommons.auctr.edu/dissertations/2173.

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The influence of the electrokinetic properties of coal on the adsorption and gasification activities of calcium acetate and potassium carbonate has been studied. It has been found from zeta potential measurements on lignite, subbituminous and bituminous coals that the coal particles are negatively charged in both acidic and basic solutions, although the negative charge density is more pronounced in strongly alkaline media. In general, the extent of calcium or potassium adsorption correlated with the negative zeta potentials. Calcium or potassium adsorption followed the order lignite > subbitum
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Vasudevan, Venkatesh. "Study on candle filter surface regeneration characteristics at room temperature." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2878.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains xxiii, 271 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 268-271).
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Viswanathan, Balakrishnan. "Study of surface regeneration characteristics of a candle filter at high temperature." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3373.

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Thesis (M.S.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains xi, 106 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 96-98).
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Gregory, Sean. "Development of instrumentation for the investigation of surface regeneration for candle filters." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2238.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xii, 102 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 80-81).
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Wang, Jisheng. "The role of active surface sites in CO₂ gasification of polymer char and coal chars." Thesis, University of Bath, 1989. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328540.

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Komarova, Evgeniia. "Brown coal char CO2-gasification kinetics with respect to the char structure." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2017. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-227770.

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This research has been performed in the framework of the Virtuhcon project, which intends to virtualize high temperature conversion processes. Coal gasification is one of these processes, which is nowadays considered as a promising technology for the chemical industry. This study is devoted to the coal char physical structure, which is one of the most important parameters influencing coal gasification reaction. First, this study presents the extensive literature review of the char physical structure role during its conversion. Collection of the char structural properties as well as their chang
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Kitaka, Richard Herbertson. "Underground coal gasification : overview of an economic and environmental evaluation." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-12-4535.

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This paper examines an overview of the economic and environmental aspects of Underground Coal Gasification (UCG) as a viable option to the above ground Surface Coal Gasification (SCG). In addition, some highlights, hurdles and opportunities from early investment to successful commercial application of some worldwide UCG projects will be discussed. Global energy demands have prompted continual crude oil consumption at an astronomical pace. As such, the most advanced economies are looking for local and bountiful resources to challenge crude oil's dependence for which coal provides the best alte
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Book chapters on the topic "Surface coal gasification"

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Derbin, Y. G., J. Walker, and D. Wanatowski. "Modelling surface subsidence during underground coal gasification." In Deep Rock Mechanics: From Research to Engineering. CRC Press, 2018. http://dx.doi.org/10.1201/9781351042666-1.

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Shahbaz, Muhammad, Tareq Al-Ansaria, Gordon Mckay, Suzana Yusup, and Muddasser Inayat. "Optimization Study of H2/CO Ratio in the Steam Gasification of PKS using Coal Bottom ash for fuel Production through Response Surface Methodology." In Computer Aided Chemical Engineering. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-823377-1.50171-3.

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Conference papers on the topic "Surface coal gasification"

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Bhattacharya, Chittatosh, and Nilotpal Banerjee. "Integrated Drying and Partial Coal Gasification for Low NOX Pulverized Coal Fired Boiler." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55108.

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Coal bound moisture is a key issue in pulverized coal fired power generation. Coal being hygroscopic, accumulates considerable surface moisture with seasonal variations. A few varieties of coals are having unusually high inherent as well as surface moisture that affects the pulverizer performance and results lower thermal efficiency of the plant. A proper coal drying is essential for effective pulverization and pneumatic conveyance of coal to furnace. But, the drying capacity is limited by available hot airflow and temperature of hot primary air. Even, use of high-grade coal for blending would
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Lu, Xijia, and Ting Wang. "Effect of Radiation Models on Coal Gasification Simulation." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86997.

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Adequate modeling of radiation heat transfer is important in CFD simulation of coal gasification process. In an entrained-flow gasifer, the non-participating effect of coal particles, soot, ashes, and reactive gases could significantly affect the temperature distribution in the gasifier and hence affects the local reaction rate and life expectancy of wall materials. For slagging type gasifiers, radiation further affects the forming process of corrosive slag on the wall which can expedite degradation of the refractory lining in the gasifier. For these reasons, this paper focuses on investigatin
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Egan, B. Z., D. E. Fain, G. E. Roettger, and D. E. White. "Separating Hydrogen From Coal Gasification Gases With Alumina Membranes." In ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-132.

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Synthesis gas produced in coal gasification processes contains hydrogen, along with carbon monoxide, carbon dioxide, hydrogen sulfide, water, nitrogen, and other gases, depending on the particular gasification process. Development of membrane technology to separate the hydrogen from the raw gas at the high operating temperatures and pressures near exit gas conditions would improve the efficiency of the process. Tubular porous alumina membranes with mean pore radii ranging from about 9 to 22 A have been fabricated and characterized. Based on the results of hydrostatic tests, the burst strength
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Liu, Wen, Shanshan Shao, QiuPing Chen, Jin Shi, ZhiRong Yang, and WenHui Xu. "Failure Analysis of a Cracked Outlet Elbow in Coal Gasification Unit." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45892.

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A crack was observed on an outlet elbow of the pre-converter in coal gasification unit during operation. This paper details the investigation into the failure and highlights the most probable cause of failure based on available documents and experimental analysis. Visual examination, chemical components analysis, energy spectrum analysis, fracture analysis, metallurgical analysis, mechanical properties test and residual stress measurement were performed. The experimental results show that the primary crack initiated from inside and propagated to outer surface of the elbow. The content of titan
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Duan, Yufeng, Yi Zhou, Xiaoping Chen, Changsui Zhao, and Xin Wu. "Pore Structure of Coal-Chars Derived From Atmospheric and Pressurized Spouted Fluidized Bed Gasifiers." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78036.

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Pore structure is one of the most important factors that dominate the reactivity of post-combustion of coal-chars derived from partial gasification process of atmospheric and pressurized spouted fluidized bed gasifiers. The influential factors on pore structure of coal-chars were analyzed in terms of the coal size feed, operational conditions, coal-char size and its components. It concluded that pyrolysis and devolatilization play a leading role in forming the pore structure of coal-chars in the partial gasification process. It is the reaction of coal-char with CO2 and H2O (steam) that plays a
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Blinderman, Michael S., and Bernard Anderson. "Underground Coal Gasification for Power Generation: High Efficiency and CO2-Emissions." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52036.

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Underground Coal Gasification (UCG) is a gasification process carried out in non-mined coal seams using injection and production wells drilled from the surface, enabling the coal to be converted into product gas. The UCG process practiced by Ergo Exergy is called Exergy UCG or εUCG. εUCG was applied in the Chinchilla UCG-IGCC Project in Australia. The IGCC project in Chinchilla, Australia has been under development since July 1999. The project involves construction of the underground gasifier and demonstration of UCG technology, and installation of the power island. Since December 1999 the pla
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Gordillo, Gerardo, and Kalyan Annamalai. "Gasification of Coal and Dairy Manure With Air-Steam as Oxidizing Agent." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32128.

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The animal waste from feedlots (called feedlot biomass, FB) and dairy farms (called dairy biomass, DB) can contribute to surface or ground water contamination and air pollution problems with the release of greenhouse gases (CH4). In the present study, the feasibility of onsite gasification of DB with an air-steam mixture for production of H2 rich syngas (a mixture of H2 and CO) is considered. The composition of gases produced by DB is predicted using a) mass conservation and b) chemical equilibrium for adiabatic systems where heat produced by partial oxidation is used to strip H2 from steam. C
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Otaka, Maromu, Hiroaki Watanabe, and Saburo Hara. "Numerical Simulation of Molten-Slag Flow in Coal Gasifier." In ASME 2005 Power Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pwr2005-50370.

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In this paper, numerical simulations of the heat transfer in molten-slag flow with free surface and phase change (solidification) is carried out, and we propose a new evaluation method for discharging performance of the molten-slag from coal gasifier. A stable operation of the coal gasifier requires that the molten-slag should be discharged from the slag-hole continuously. In the maintenance of discharging a molten slag, it is necessary to keep the molten-slag temperature higher than an ash fluid temperature, and to hold the fluidity of the molten-slag. From the viewpoint of gasification perfo
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Blinderman, Michael S. "The Exergy Underground Coal Gasification Technology as a Source of Superior Fuel for Power Generation." In ASME 2006 Power Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/power2006-88064.

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Underground Coal Gasification (UCG) is a gasification process carried on in non-mined coal seams using injection and production wells drilled from the surface, converting coal in situ into a product gas usable for chemical processes and power generation. The UCG process developed, refined and practiced by Ergo Exergy Technologies is called the Exergy UCG Technology or εUCG® Technology. The εUCG technology is being applied in numerous power generation and chemical projects worldwide. These include power projects in South Africa (1,200 MWe), India (750 MWe), Pakistan, and Canada, as well as chem
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Ahmad, Razi, Mohd Azlan Mohd Ishak, Nur Nasulhah Kasim, and Khudzir Ismail. "Optimization of co-gasification process parameters of pretreated palm kernel shell and pretreated Malaysian low rank coal using response surface methodology." In PROCEEDING OF THE INTERNATIONAL CONFERENCE ON MATHEMATICS, ENGINEERING AND INDUSTRIAL APPLICATIONS 2018 (ICoMEIA 2018). Author(s), 2018. http://dx.doi.org/10.1063/1.5054218.

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Reports on the topic "Surface coal gasification"

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Surface Coal Gasification Program. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/7019391.

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