Relevant bibliographies by topics / Coal India Limited

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Academic literature on the topic 'Coal India Limited'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Coal India Limited"

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Chakrabarti, Prabhas Kumar, and Juin Choudhary. "Wage-Productivity Relationship in Coal India Limited." Journal of Social Sciences 8, no. 1 (January 2004): 29–43. http://dx.doi.org/10.1080/09718923.2004.11892400.

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Raghavendra, S., S. Pardhasaradhi, and Swetha Suram. "A Case Study on Sustainable Development in Coal India Limited." Asian Journal of Water, Environment and Pollution 14, no. 3 (July 5, 2017): 57–63. http://dx.doi.org/10.3233/ajw-170026.

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Ranjan, Rashmi, and Niladri Das. "Analysis of Key Factors of Economic Performance Influencing Environmental Management - A Study of Indian Mining Industry." INTERNATIONAL JOURNAL OF MANAGEMENT & INFORMATION TECHNOLOGY 6, no. 1 (September 30, 2013): 711–18. http://dx.doi.org/10.24297/ijmit.v6i1.752.

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This paper provides an insight of the relationship between economic performance and environmental management which is necessary for sustainable development and economic prosperity. The present paper uses factor analysis methodology for identifying the major factors relating to economic performance which also enhances environmental management in mining industry.The survey has been conducted in four subsidiaries of Coal India Limited (CIL) which are Bharat Coking Coal Limited (BCCL), Dhanbad, Central Coalfield Limited (CCL), Ranchi, Coal Mines Planning and Design Institute India Limited (CMPDIL), Dhanbad and Eastern Coalfield Limited (ECL), Asansol. This study identifies four factors, namely risk related driver, image related driver, societal related driver and efficiency related driver of economic performance which should be integrated with corporate strategy of the company for sustainable growth and development.
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Nagarkatti, Arun, and Ajit Kumar Kolar. "Assessment of Life Cycle Greenhouse Gas Emissions from Coal Fired Power Plants in India." Applied Mechanics and Materials 704 (December 2014): 487–90. http://dx.doi.org/10.4028/www.scientific.net/amm.704.487.

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More than two third share of electricity come from coal fired power plants in India. Coal fired power plants are the largest source of anthropogenic CO2 emissions per unit of electricity generation among all fossil fuel based power plants. There has been climate change and global warming globally due to increasing anthropogenic emission of greenhouse gas (GHG) into the atmosphere. This paper examines life cycle GHG emission such as CH4, CO2 and N2O of a National Thermal Power Corporation (NTPC) Limited power plant using life cycle approach. The various stages involved in the assessment of life cycle GHG emissions in the present study include coal mining, transportation of coal to the power plant and coal combustion for electricity generation. The results show that direct CO2 emission from coal combustion is about 890 g CO2-e/kWh, whereas life cycle GHG emissions amount to 929.1 g CO2-e/kWh. Indirect GHG emissions add up to 4.2% of total emissions. Coal mine methane leakage into atmosphere in India is low since more than 90% of the coal mining is surface mining.
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Xia, Kaiwen, Sheng Huang, and Ajay Kumar Jha. "Dynamic Tensile Test of Coal, Shale and Sandstone Using Split Hopkinson Pressure Bar." International Journal of Geotechnical Earthquake Engineering 1, no. 2 (July 2010): 24–37. http://dx.doi.org/10.4018/jgee.2010070103.

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The dynamic tensile strength plays a pivotal role in rock fragmentation affecting the overall economics under the present ‘Mine to Mill Concept’. In this paper, a modified SHPB technique and Brazilian test method is presented to test the dynamic tensile strength of coal, shale and sandstone rock samples collected from three opencast mines of Coal India Limited and is compared with the static strength value. The dynamic tensile strength of coal and rock is much higher than static strength and tensile strength of coal and rock samples increase with loading rate. The result shows that the dynamic strength of the coal sample is 1.5 times higher than static strength and the dynamic strength of the sandstone sample is 3 times higher than the static strength.
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Amar Singh Rana, Abhishek James, and Satyendra Nath. "Effect Of Coal Mining On Health Of Workers And Surrounding Peoples In Northern Coalfields Limited Singrauli, India." History Research Journal 5, no. 4 (August 14, 2019): 31–35. http://dx.doi.org/10.26643/hrj.v5i4.7085.

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The present study was to assess the effect of coal mining on health of workers and surrounding peoples in northern coalfields limited Singrauli, India. For data collection, pre-structured questionnaire was specially prepared and survey was also done in two year (2016-2017 and 2017-2018). Sample was selected randomly from local people of selected areas. Sample size was 150 respondents from each year in which 30 each from Amlori, Nigahi, Jayant, Dudhichua and Khadi a project. Thus the result revealed that local people were suffering from many health related problems in which most of the people were found respiratory and lung diseases. It is suggested that local people should wear mask, drink purified water and should plant more and more tress surrounding areas.
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Wang, Lai-Wang, Thanh-Tuyen Tran, and Nhu-Ty Nguyen. "An Empirical Study of Hybrid DEA and Grey System Theory on Analyzing Performance: A Case from Indian Mining Industry." Journal of Applied Mathematics 2015 (2015): 1–15. http://dx.doi.org/10.1155/2015/395360.

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India, which has long been recognized as a well-endowed nation in natural mineral resources, is a major minerals producer. According to the report of Indian Ministry of Mines 2013, Indian mining and metals sector ranked the fourth among the mineral producer countries, behind China, United States, and Russia and had in fact led the economy into recovery from the global financial crisis. Since this industry has turned into a significant issue, this paper attempts to rank the performance of 23 Indian mining and metal companies and to evaluate and measure the productivity change of these sectors during different time periods (2010–2014). Besides, the authors would like to choose one advanced model of MPI to see the performance of these companies in the past-present period and the 4-year future period (2015–2018) by using forecasting results of Grey system theory. The results revealed that from the past to future period the National Mineral Development Corporation, Hindalco Industries Limited, and Coal India always keep their highest best rankings among 23 DMUs regarding performance scores. This study contributes better insights of Indian mining industry as it is the core of the economy.
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Ranjan, Rashmi, and Niladri Das. "Designing a framework for integrating environment management with drivers of economic performance." International Journal of Energy Sector Management 9, no. 3 (September 7, 2015): 376–92. http://dx.doi.org/10.1108/ijesm-02-2014-0004.

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Purpose The purpose of this paper is to integrate drivers of economic performance with environmental management aspects and core managerial functions of the Indian coal mining industry. Design/methodology/approach For this research paper, primary and secondary data have been used. The primary data were collected through a questionnaire survey which was distributed in the four subsidiaries of Coal India Limited. The validity and reliability of the questionnaire were tested by appropriate statistical techniques. Further, one-sample t-test and multiple linear regression analysis have been used for data analysis. Findings Testing of hypotheses reveals that there is a high level of integration of environmental management aspects with the seven core managerial functions, namely, production process, distribution process, beneficiation process, quality issues, stakeholders’ interest, health and safety and corporate strategy. Further, the paper identified that there is a positive association between integration of environmental aspects with core functions and the four drivers of economic performance and it is strongly associated with societal-related and risk-related drivers of economic performance. But it is less strongly associated with image-related and efficiency-related drivers of economic performance. Research limitations/implications This paper focuses on integrating the environmental management and core functions with key drivers of economic performance in coal mining industry which is one of the most polluting industries of the world. The limitation of the paper is that it is very specific and limited to the coal mining industry. Originality/value The paper contributes to the existing work by designing a framework which identifies the key drivers of economic performance and integrating it with the environmental management system of the organisation.
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Lawrenz, Linus, Bobby Xiong, Luise Lorenz, Alexandra Krumm, Hans Hosenfeld, Thorsten Burandt, Konstantin Löffler, Pao-Yu Oei, and Christian von Hirschhausen. "Exploring Energy Pathways for the Low-Carbon Transformation in India—A Model-Based Analysis." Energies 11, no. 11 (November 1, 2018): 3001. http://dx.doi.org/10.3390/en11113001.

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With an increasing expected energy demand and current dominance of coal electrification, India plays a major role in global carbon policies and the future low-carbon transformation. This paper explores three energy pathways for India until 2050 by applying the linear, cost-minimizing, global energy system model (GENeSYS-MOD). The benchmark scenario “limited emissions only” (LEO) is based on ambitious targets set out by the Paris Agreement. A more conservative “business as usual” (BAU) scenario is sketched out along the lines of the New Policies scenario from the International Energy Agency (IEA). On the more ambitious side, we explore the potential implications of supplying the Indian economy entirely with renewable energies with the “100% renewable energy sources” (100% RES) scenario. Overall, our results suggest that a transformation process towards a low-carbon energy system in the power, heat, and transportation sectors until 2050 is technically feasible. Solar power is likely to establish itself as the key energy source by 2050 in all scenarios, given the model’s underlying emission limits and technical parameters. The paper concludes with an analysis of potential social, economic and political barriers to be overcome for the needed Indian low-carbon transformation.
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Nimaje, Devidas S., and Shiva Sai. "Development Of Software To Evaluate Roof Fall Risk In Bord And Pillar Method - Depillaring Phase." GeoScience Engineering 61, no. 2 (June 1, 2015): 14–22. http://dx.doi.org/10.1515/gse-2015-0014.

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Abstract Roof fall is one of the major problems of the bord and pillar coal mines during the depillaring phase. Roof fall not only causes considerable damage to the mining equipment but also to the miners. To keep in view, development of software is essential for the calculation of roof fall risk to reduce the accidents to a certain extent. In this paper, the software has been developed and tested on seam-2, the main panel of RK-5 underground coal mine, Singareni Collieries Company Limited, India and corresponding roof fall risk was calculated. The best combination of the parameters causing roof fall risk was evaluated to reduce the risk.
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Books on the topic "Coal India Limited"

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Auditor-General, India Comptroller and. Coal India Limited, corporate social responsibility: Report of the Comptroller and Auditor General of India. New Delhi: Comptroller and Auditor General of India, 2011.

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Antonyto, Paul, Menon Vineetha, and Centre for Development Studies (Trivandrum, India), eds. Water insecurity, institutions, and livelihood dynamics: A study in Plachimada, Kerala, India. Delhi: In collaboration with Centre for Development Studies, Daanish Books, 2008.

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Book chapters on the topic "Coal India Limited"

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Yi-chong, Xu. "Coal India Limited: The Last One Standing." In The Political Economy of State-owned Enterprises in China and India, 47–68. London: Palgrave Macmillan UK, 2012. http://dx.doi.org/10.1057/9781137271655_3.

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Mishra, P. K., O. P. Mishra, and K. Kusuma Kumari. "Coal Beneficiation: Initiatives Taken by Mahanadi Coalfields Limited (a Subsidiary of Coal India Limited)." In XVIII International Coal Preparation Congress, 163–68. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40943-6_24.

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Sen, Souvik, and Satabdi Banerjee. "Identifying Relationship Amongst Vitrinite/Inertinite Ratio (V/I), Cleat Parameters, Vitrinite Reflectance, O/C Ratio and Permeability of Coal Seams and V/I Ratio as Exploration Tool: Study from Raniganj Coal Bed Methane Block, Essar Oil Limited, India." In Springer Geology, 205–17. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-03119-4_9.

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Wadehra, B. L. "Coal India Limited." In Public Enterprise, 211–33. Routledge, 2019. http://dx.doi.org/10.4324/9780429244377-10.

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Sullivan, Rory, Santiago Porto, Michael Warner, Amit Mukherjee, Rajat Das, and Joydev Mazumdar. "Integrated Coal Mining Limited, India." In Putting Partnerships to Work, 55–73. Routledge, 2017. http://dx.doi.org/10.4324/9781351281249-4.

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Das, Mrigakshi, and Mahaprajna Nayak. "Endless Restructuring of the Power Sector in Odisha." In Mapping Power, 193–214. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199487820.003.0010.

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Odisha in the mid-1990s was a poor state with limited rural electrification but plentiful vast coal and ample hydro supply. Enabled by a cross-party consensus that the state should become the “powerhouse of India,” Odisha was the first Indian state to take a World Bank package to design and implement reforms, including distribution privatization. The state utilities initially profited from selling cheap hydro power to neighbouring states, but the effect of reforms on citizen-consumers was negative: tariffs for existing consumers increased and rural electrification all but stopped under private discom ownership. This low-level equilibrium was sustained throughout the 2000s when a new conjuncture of factors imperilled sector finances: centrally-funded grid expansion led to an increase of costly-to-serve rural consumers, increasing demand forced a turn to higher cost thermal power, and industrial customers shifted to captive power. The failure of reforms is underscored by cancellation of the last three private licenses in 2015, throwing the problem back into the state’s hands. Odisha risks tipping from a low level equilibrium to a vicious cycle.
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Wynne-Jones, Stephanie. "A Material Culture: Introduction." In A Material Culture. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780198759317.003.0006.

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Africa’s eastern littoral borders the Indian Ocean, providing the setting for the settlements, people, and language known collectively as Swahili, which have been a key part of that ocean’s trading networks for at least two millennia. Graeco-Roman sailors visited the now-forgotten metropolis of Rhapta, and their voyages were recorded in the narratives that later became the first-century Periplus of the Erythraean Sea (Casson 1989). Traces of that early contact survive in the form of beads and coins, yet are limited in number and diffuse in nature (Chami and Msemwa 1997a; Horton 1990). From the seventh century onwards, a series of more permanent settlements began to monopolize this trade; by the eleventh century some of these had grown into towns that were able to control and provide a focus for the mercantile opportunities of the Indian Ocean. The trading economy of Swahili towns was based on the wealth of the African continent—gold and ivory were particularly valuable exports—and underlain by a mixed economy and diverse population of fishers and farmers, traders and craft-workers (Horton and Middleton 2000; Kusimba 2008). By the ‘golden age’ of the thirteenth and fourteenth centuries, the Swahili were an African society of considerable cosmopolitanism and fame, with towns like Kilwa Kisiwani known throughout the medieval world (Sutton 1993, 1997). Swahili archaeology is focused, conceptually and methodologically, on the series of stone towns that grew up along Africa’s eastern coast from the end of the first millennium AD. These towns developed as key nodes in both local and international networks of interaction, and became the conduits through which the African continent traded and communicated with the wider Indian Ocean world. The material settings of the towns, and particularly the distinctive tradition of coral architecture they contain, embody their cosmopolitanism, with this locally derived building tradition creating unique urban spaces that nevertheless reference the Islamic architecture of the Arabian Peninsula and Persian Gulf (Garlake 1966). Archaeology on this coast is still relatively new, dating back only to the 1950s and 1960s, and to the pioneering work of researchers convinced they had discovered evidence for Arab trading stations on the coast of eastern Africa (Kirkman 1964).
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Bentley, Peter J. "Can You Compute?" In Digitized. Oxford University Press, 2012. http://dx.doi.org/10.1093/oso/9780199693795.003.0006.

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Created by pioneering mathematicians and engineers during times of political unrest and war, computers are more than electronic machines. Underneath the myriad complicated circuits and software glows a mathematical purity that is simplicity itself. The maths at the root of computers illuminates the nature of reality itself. Today explorers of the impossible still compete to find the limits in our universe. With a revolution in mathematics and technology and a million dollars at stake, who can blame them? . . . It was 1926 and the General Strike was taking place in England because of disputes over coal miners’ pay. There were no buses or trains running. Fourteen-year-old Alan Turing was supposed to be starting at a grand boarding school: Sherborne in Dorset. Yet he was living in Southampton, some sixty miles away. Many children would have simply waited for the ten-day strike to finish and have a longer holiday. Not Turing. He got on his bike and began cycling. It took him two days, with a stay in a little hotel halfway, but young Turing made it to his new school on time. Turing’s independence may have stemmed from the fact that he and his older brother John had seen little of their parents while growing up. Both parents were based in India, but decided their children should be educated in England. The boys were left with friends of the family in England until their father retired and returned in 1926—just as Turing made his way to the new school. It was an impressive start, but Alan Turing didn’t do very well at his new school—he never had in any previous school. His handwriting was terrible, his written English poor. His English teacher said, ‘I can forgive his writing, though it is the worst I have ever seen, and I try to view tolerantly his unswerving inexactitude and slipshod, dirty, work . . .’ The Latin teacher was not much more approving. ‘He is ludicrously behind.’ The problem was that Turing didn’t pay attention to the curriculum being taught. Instead he spent more time following his own interests.
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Conference papers on the topic "Coal India Limited"

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Behera, Sushanta Kumar, S. Chakraborty, and B. C. Meikap. "Upgradation of Low Grade Coal to High Quality Coal by Chemical Beneficiation Technique." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3057.

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Low rank or grade coals (LGC) are widely distributed over the world. Coal plays a vital role in the global energy demand especially through power generation and it mitigates the energy poverty. The major challenges by the utility of coal as regarding to energy security, a risk of climate change, and increasing of the energy demands are the main portfolio to develop the advanced technology for coal beneficiation. The gradual depletion of high quality coal and cost effective which become a significant issue for power generation while the low grade coals were served as low cost fuel and as an alternative energy security issue. In current research the low grade coal (>35% ash) has been upgraded to higher grade (<10%) by chemical cleaning method. The low grade coal was selected from Mahanadi Coalfields Limited, Odisha, India. Each test was conducted of 50 g coal (250 μm particle size) with 40% NaOH at 100 °C for 3 h and followed with 20% of H2O2, H2SO4, HCl, and HF acids at similar conditions. The research study revealed that ash content (mineral matter) of coal is reduced to >70% by NaOH followed HF treatment as compared to other solvents. The greater liberation of mineral results increases the ash reduction from low grade coal because mineral associated in the coal matrix may formed elution by the leaching effect. The greater extent of demineralization was caused due to the high affinity of OH− and F− with minerals in the coal matrix. The characterization of pre and post treatment coal and coal ash was investigated by the FESEM, XRF and XRD analysis. Overall the current research study challenges the chemical cleaning of low grade coal has been efficient techniques for reducing the minerals to a certain limit.
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Basu, Arun, Mike Gradassi, Ron Sills, Theo Fleisch, and Raj Puri. "Use of DME as a Gas Turbine Fuel." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0003.

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A new, ultra-clean fuel for gas turbines — a blend consisting primarily of dimethyl ether (DME) with lesser amounts of methanol and water — has been identified by BP. This fuel, containing no metals, sulfur or aromatics, burns like natural gas and it can be handled like LPG. The turbine-grade DME fuel can be manufactured from natural gas, coal and other hydrocarbon or biomass feedstocks. High-purity DME, manufactured from methanol, is currently used as an aerosol propellant due to its environmentally benign characteristics. Fuel-grade DME is used commercially as a LPG-substitute in China. BP initiated key programs to test various fuel mixtures containing DME in General Electric test combustors with equivalent electricity production of nearly 16 MW. Later, BP collaborated with EPDC (Electric Power Development Corporation, Japan) to conduct additional follow-up tests. These tests show that DME is an excellent gas turbine fuel with emissions properties comparable to natural gas. BP is currently working with the Indian Oil Corporation (IOCL), the Gas Authority of India Limited (GAIL) and the Indian Institute of Petroleum to evaluate the potential of DME as a multi-purpose fuel for India. In June 2000, the India Ministry of Power issued a notification permitting the use of DME as a fuel for power generation subject to its meeting all the environmental and pollution regulations. This paper presents key gas turbine combustor test results and discusses how DME can be used as a fuel in gas turbines.
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Kumar, Hemant, S. K. Mohapatra, and Ravi Inder Singh. "CFD Analysis of a Fluidized Bed Combustor Based on Co-Firing." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50317.

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In this paper computational analysis of a real plant Bubbling Fluidized Bed (BFB) combustor has been done, using FLUENT 6.3, CFD code. Keeping in mind the biomass potential in the agricultural state like Punjab, India, various corporate sectors initiated the use of these renewable energy sources such as rice husk, paddy rejects and sugarcane baggase etc. in sharing with conventional fuels such as coal. The study has been done at Captive Power Plant (CPP) of Ambuja Cement Limited, Ropar, Punjab, India. The boiler, with 45TPH capacity, based on Fluidized Bed Combustion (FBC) system uses coal and biomass (70% coal and 30% biomass) as fuels. Standard k–ε two-phase turbulence model has been used to describe the gas–solids flow in the BFB. The analysis of combustion is done by Non-Pre Mixed (NPM) approach in species model. In this paper temperature contours inside the furnace and mass fractions of O2 and CO2 have been obtained by CFD tool. Temperature in the vicinity of the bed was found up to 927 °C and at the exit of the furnace was found around 867 °C. The O2 concentration was found higher over the bed however the CO2 concentration was found more near biomass flame due to instantaneous combustion.
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Dutta, Animesh, Prabir Basu, Amit Ghosh, and Prasun Chakraborty. "A Innovative Solution to the Problem of Mill Rejects in Thermal Power Plants." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78126.

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The present paper discusses an innovative means for solving the problem of accumulation of waste coal in some pulverized coal fired plants. A major waste in a pulverized coal fired power plant is the reject produced from pulverizing mills. When coal is ground in a bowl mill heavy mineral matters are separated, but they still contain a small amount of coal mixed. However, the heating value of the rejects is generally too low for combustion in conventional boilers. As a result they find limited commercial use and are dumped in the plant adding to the fugitive dust, leaching problem and most importantly devastating damage to the landscape. The amount of mill reject is significant in older operating plant. In India for example, it is about 0.5–1.0% of coal throughput into the boiler. In this paper, an exercise is undertaken to show how these rejects could be burnt to produce low pressure process steam, which could save the bleeding of main steam of the power plant and thereby augment power generation. A subcompact novel circulating fluidized bed boiler has been designed, built and commissioned for this purpose. The present paper discusses the finding of above exercise.
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Parker, Ken R., Jeff Allen, and Anupam Sanyal. "Benchmarking Software for Slagging, Fouling and Other Parameters to Improve Coal-Fired Power Plant Load Factor, Efficiency and Emission." In ASME 2006 Power Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/power2006-88249.

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For a 500 MW unit, a 1 % reduction in boiler efficiency equates to a coal cost in the order of $ 1/2 million/annum, while a 5 % unit derate, needed to meet emission compliance, can equate to an annual revenue loss of up to $ 12 million. Many software products are in use, which based on the present plant performance, identify and optimize the operational parameters for the best plant capacity, utilization and efficiency. While they are effective in tuning up the unit, they are applied to an operating plant firing a given coal for the given performance. But what if there were a means of predicting how a coal will perform with respect to slagging, fouling and every other single parameter involved in the use of that coal for capacity, efficiency maximization and emission control without firing even a lb of coal? This would enable the operator to know in advance what to expect and thereby, adjust the operating variables to get the best out of that coal. Such a software product – SCES (Steam Coal Evaluation & Services) has been developed based on the fundamental principles of combustion, mineral matter transformation and emission of particulates, NOx, SO2 and mercury, based on only the standard ASTM coal and ash analyses. The operational parameters evaluated are: Slagging and fouling as well as Grindability, Abrasion of the grinding elements; Combustibility & Unburnt carbon, Corrosion and Erosion; Emission of particulates, the oxides of sulfur and nitrogen (both primary and secondary DeNOx) as well as mercury when data are available. Its advantage over the existing products is its ability to predict, amongst others parameters, corrosion, erosion of convective tubes and the life of grinding elements none of which are discernible from the existing software products or from a limited test burn. These parameters however play important roles in the bottom line O & M costs. The implementation of SCES in providing meaningful rankings alerts the plant operators to the performance they can expect and any measures that need to be taken to be able the plant to operate at its highest load factor and efficiency while under emission compliance with minimum impact on O & M cost. No separate coal sample or small-scale laboratory evaluation work is required in the derivation of the rankings. Because of its simplicity of use and immediate availability of results, SCES can also be used as a routine analytical tool, accompanying the coal analyses by the plant or supplied with each delivery of coal. It is applicable to all coals irrespective of rank and country of origin, it has been used and validated on coals from the US, UK, Russia, Columbia and India. The paper describes the fundamental properties coal used in the development of the software and cites case histories of its validation on US (Bituminous & Sub-bituminous) coals.
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Vyas, Sandeep. "Internal Corrosion Monitoring System Selection for Cross Country Natural Gas Pipeline: A Case Study of SHPPL." In ASME 2015 India International Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/iogpc2015-7945.

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Reliance Gas Pipelines Limited (RGPL) is currently implementing a gas pipeline project from Shahdol, Madhya Pradesh to Phulpur, Uttar Pradesh for evacuation of gas produced from Coal Bed Methane (CBM) blocks owned by Reliance Industries Ltd. This pipeline will be hooked up with GAIL’s HVJ Pipeline at Phulpur. Over all Pipeline system includes 312 km (approx.) long trunk line, and associated facilities such as Compressor Station at Shahdol, Intermediate Pigging facilities, Metering & Regulating facilities at Phulpur and 12 No. Mainline valve stations. Gas produced from CBM blocks will be dehydrated within Gas Gathering Station facilities of CBM Project located upstream of pipeline Compressor station at Shahdol. Gas received at pipeline battery limit is dry and non-corrosive gas in nature, Internal corrosion is not expected in normal course of operation, however internal corrosion of the natural gas pipeline can occur when the pipe wall is exposed to moisture and other contaminants either under process upset conditions or under particular operating conditions. Even though internal corrosion is not expected during normal course of operations, to take care of any eventuality, it is proposed to implement Internal Corrosion Monitoring (ICMS) system in this project. ICMS will provide an efficient and reliable means of continuous monitoring internal corrosion. Internal Corrosion Monitoring (ICMS) system is used as a part of overall integrity management framework; to achieve two objectives viz., verify the corrosive behaviour of gas and to verify the efficacy of applied preventive actions. Philosophy involved in evaluating a suitable CM technique would include : • Applicable corrosion damage mechanisms, anticipated corrosion rates and probable locations. • Suitable CM technique and location based on process condition, system corrosivity, water content, pigging facilities, available corrosion allowance, design life, maintenance etc., • Measurement frequency. Some of the Corrosion Monitoring techniques used for pipeline and of relevance are: • Weight-loss Corrosion Coupons (CC), • Electrical Resistance probes (ER), • Linear Polarization Resistance Probe (LPR) • Ultrasonic Thickness Measurement (UT) • Sampling Points (SP) This paper discusses the merits / demerits of these corrosion monitoring techniques, considerations for selecting a specific technique for the Shahdol – Phulpur Gas Pipeline Project and highlights the implementation of the internal corrosion monitoring system.
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Dhamangaonkar, P. R., Abhishek Deshmukh, Santosh Pansare, and M. R. Nandgaonkar. "Design and Computational Validation of In-Line Bare Tube Economizer for a 210 MW Pulverized Coal Fired Boiler." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62073.

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One of the pulverized coal fired thermal power plants in India intended to find the root cause of frequent boiler tube failures in three 210 MW units. Operation & Maintenance history and feedback from plant O&M team revealed that economizer tube failure was a frequent cause of forced outage. The plant under study used CFS (continuous fin surface) economizer with staggered tube arrangement in the 210 MW units. CFS staggered tube economizers originally appealed to many plant designers because the tortuous path created for the flue gas, enhanced heat absorption and the fins could capture heat and transfer it to the tubing. This made the CFS economizer less costly and easy for installation in a relatively small space. There is increasing use of lower quality high ash coals over the past few decades. Due to this fact an advantage of the CFS economizer design became a disadvantage. The narrow spacing in the tubes proved more susceptible to plugging and fly ash erosion. Literature study and the root cause analysis suggested that CFS staggered arrangement of economizer could be one of the prominent reason of failure of economizer tube bundle due to fly ash erosion. Flue gas flow simulation also highlighted that there is increase in velocity of flue gases across the economizer. A bare tube in-line configuration in place of existing CFS economizer was an alternative. To recommend an alternate economizer as solution, the merits of an in-line bare tube economizer were studied. Bare tubes arranged in-line are most conservative in hostile environments with high ash content, are least likely to plug, and have the lowest gas-side resistance per unit of heat transfer. A bare tube in-line economizer that can replace the existing finned tube economizer in the available space while meeting the existing design & performance parameters is recommended. An attempt was made to model & analyze the new economizer using computational fluid dynamics (CFD) tools in order to get firsthand experience and validate the results obtained using manual calculations. With limited computational resources and not so fine meshing, the performed CFD model analysis showed the expected trend but did not completely match the results.
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8

Dasgupta, Chanchal. "New Materials for Protection of City Gas Distribution Networks." In ASME 2019 India Oil and Gas Pipeline Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/iogpc2019-4520.

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Polyethylene pipes and Steel pipes with 3LPE coatings are integral part of a citygas distribution network. These are being used in India since late 80’s. Standard MDPE and HDPE materials are Butene copolymers of Ethylene, where Butene (C4) is added as comonomer to form the side branches of linear Polyethylene (C2) chains. The research on PE materials have improved various attributes of the polymer, providing them with higher durability, pressure resistance and service life. One such development is use of Hexene (C6) as a copolymer replacing Butene (C4) to make an Ethylene Hexene copolymer providing superior resistance to mechanical damages and slow crack growth during installation and service. For PE100 Orange pipe materials for low / medium pressure distribution system, the new hexene PE copolymer, offers much superior resistance to slow crack growth. Hence it is ideal for Trenchless installations like HDD or pipe bursting, where pulling the pipe through the bore in the ground may substantially notch and scratch the pipe or coating. Using a Hexene PE service life of the pipe is not affected despite the demanding installation techniques due to higher entanglement of polymer chains. These types of PE materials are already being used by Indian CGD Industry for past 2–3 years. For 3LPE coated steel pipes for high pressure gas mains as well as trunk lines, Hexene based Black PE top coat has been adopted by several Gas companies. This is mainly due to two advantages. They offer a higher upper design temperature limit of +90 C (compared to +80 C as per international specification (ISO21809-1). They also offer material savings as 10% lower thickness compared to standard PE top coat is able to meet and exceed all system requirements. The paper deals with the mechanism of these new polymers that helps to offer these superior properties.
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9

Mao, Jianfeng, Junhui Zhang, and Weizhe Wang. "Comparative Study of Flange-to-Seal Contact Couplings With Bolt Relaxation Under Creep Condition." In ASME 2013 Gas Turbine India Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gtindia2013-3529.

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Future coal-fired steam turbines promise increased efficiency and low emissions. However, this comes at the expense of increased thermal load from higher inlet steam temperatures and pressures leading to severe creep that significantly influences the sealing behavior and high temperature strength of bolted flange-seal couplings. Flanges with different thicknesses were employed for a comparative study. The important stress/creep values in the flanges and U-type seals had been obtained for variations in flange thickness and bolt relaxation whilst maintaining other leading parameters constant. The variation of contact stresses due to creep deformation plays an important role in achieving a leak proof sealing. In this paper, a two-dimensional finite element analysis (FEA) of bolted flange-seal couplings has been carried out by taking the relaxation of bolt stress under full-loading turbine service. The creep strength of flanges and U-type seals are investigated by Cocks-Ashby (C-A) equivalent strain method. The multiaxial state of stresses is considered in this method by using C-A multiaxial coefficient. According to ASME allowable creep limit, the C-A equivalent strains of three flange-seal couplings are evaluated and compared. Furthermore, based on the results of contact stresses, the creep behavior of U-type seals is analyzed varying flange thickness. Finally, analysis shows that the thinner flange-seal coupling has larger long-term contact stress, while the U-type seal with the thicker flange has the least creep strength.
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10

Batchu, Suresh, and S. Kishore Kumar. "Steady State Thermal Analysis of an Afterburner Liner." In ASME 2013 Gas Turbine India Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gtindia2013-3615.

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Military aero engines employ afterburner system for increasing the reheat thrust required during combat and takeoff. During reheat the gas temperature in the afterburner is of the order of 2100K.The afterburner liner has to be cooled with the available bypass air to maintain metal temperature within allowable limits. The liner has cooling rings at the rear to cool the liner with tangential film cooling. This paper discusses the methodology of afterburner liner metal temperature prediction and comparison with measured metal temperature during aero engine testing at reheat condition. All the modes of heat transfer are considered for thermal analysis, radiation due to higher level of gas temperature during reheat, conduction due to presence of low conductivity thermal barrier coating and convection due to higher gas velocities are considered. At different steady state reheat conditions metal temperature are predicted and compared with measured data during aero engine testing. The predicted skin temperatures and measured temperatures are in good agreement. Empirical correlations are used for estimating the heat loads coming on the liner and adiabatic film temperature near screech holes and cooling rings. Metal temperature and thermal loads coming onto the liner are predicted with 1D code. The estimated thermal loads are applied on 3D FE model to obtain nodal temperature distribution. The thermal Analysis is carried using ANSYS software in which thermal barrier coating is also modeled. The parameters like gas temperature, thermal barrier coating thickness, coating conductivity, and coolant mass flow distribution are considered for carrying out a sensitivity analysis of liner metal temperature.
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