The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform

Tripurari Sharma - One of the best experts on this subject based on the ideXlab platform.

  • Effect of operating parameters on Coal Gasification
    International Journal of Coal Science & Technology, 2018
    Co-Authors: Akanksha Mishra, Shalini Gautam, Tripurari Sharma
    Abstract:

    Coal combustion and Gasification are the processes to utilize Coal for production of electricity and many other applications. Global energy demand is increasing day by day. Coal is an abundant source of energy but not a reliable source as it results into high CO_2 emissions. Energy industries are expected to decrease the CO_2 emission to prevent global warming. Coal Gasification is a process that reduces the CO_2 emission and emerges as a clean Coal technology. Coal Gasification process is regulated by several operating parameters. A Number of investigations have been carried out in this direction. A critical review of the work done by several researchers in the field of Coal Gasification has been compiled in this paper. The effect of several operating parameters such as Coal rank, temperature, pressure, porosity, reaction time and catalyst on Gasification has been presented here.

Akanksha Mishra - One of the best experts on this subject based on the ideXlab platform.

  • Effect of operating parameters on Coal Gasification
    International Journal of Coal Science & Technology, 2018
    Co-Authors: Akanksha Mishra, Shalini Gautam, Tripurari Sharma
    Abstract:

    Coal combustion and Gasification are the processes to utilize Coal for production of electricity and many other applications. Global energy demand is increasing day by day. Coal is an abundant source of energy but not a reliable source as it results into high CO_2 emissions. Energy industries are expected to decrease the CO_2 emission to prevent global warming. Coal Gasification is a process that reduces the CO_2 emission and emerges as a clean Coal technology. Coal Gasification process is regulated by several operating parameters. A Number of investigations have been carried out in this direction. A critical review of the work done by several researchers in the field of Coal Gasification has been compiled in this paper. The effect of several operating parameters such as Coal rank, temperature, pressure, porosity, reaction time and catalyst on Gasification has been presented here.

Yu Qian - One of the best experts on this subject based on the ideXlab platform.

  • environmental impact and techno economic analysis of the Coal Gasification process with without co2 capture
    Journal of Cleaner Production, 2014
    Co-Authors: Siyu Yang, Dong Xiang, Xiuxi Li, Yu Qian
    Abstract:

    Abstract Coal Gasification, the technology for high-efficient utilization of Coal, has been widely used in China. However, it suffers from high CO 2 emissions problem due to the carbon-rich character of Coal. To reduce CO 2 emissions, different CO 2 capture technologies are developed and integrated into the Coal Gasification based processes. However, involving CO 2 capture would result in energetic and economic penalty. This paper analyses three cases of Coal Gasification processes from environmental, technical, and economical points of view. These processes are (1) a conventional Coal Gasification process; (2) a Coal Gasification process with CO 2 capture and sequestration, in which CO 2 is stored by mineral sequestration; (3) a Coal Gasification process with CO 2 capture and utilization, in which CO 2 is reused to produce syngas. The results show that the Coal Gasification process with CO 2 capture and sequestration has advantage only in environmental aspect compared to the conventional process. The process with CO 2 capture and utilization has advantages in both technical and environmental aspects while disadvantage in economic aspect. However, if the carbon tax higher than 15 USD/t CO 2 is introduced, this disadvantage will be negligible.

Shalini Gautam - One of the best experts on this subject based on the ideXlab platform.

  • Effect of operating parameters on Coal Gasification
    International Journal of Coal Science & Technology, 2018
    Co-Authors: Akanksha Mishra, Shalini Gautam, Tripurari Sharma
    Abstract:

    Coal combustion and Gasification are the processes to utilize Coal for production of electricity and many other applications. Global energy demand is increasing day by day. Coal is an abundant source of energy but not a reliable source as it results into high CO_2 emissions. Energy industries are expected to decrease the CO_2 emission to prevent global warming. Coal Gasification is a process that reduces the CO_2 emission and emerges as a clean Coal technology. Coal Gasification process is regulated by several operating parameters. A Number of investigations have been carried out in this direction. A critical review of the work done by several researchers in the field of Coal Gasification has been compiled in this paper. The effect of several operating parameters such as Coal rank, temperature, pressure, porosity, reaction time and catalyst on Gasification has been presented here.

Tomasz Janoszek - One of the best experts on this subject based on the ideXlab platform.

  • Model tests of the Coal Gasification process
    Archives of Mining Sciences, 2020
    Co-Authors: Jan Wachowicz, Tomasz Janoszek, Sebastian Iwaszenko
    Abstract:

    Simulations of phenomena occurring in Coal Gasification play essential role in designing technical installations intended for that process. The model tests are helpful in determination of optimum process conditions and in obtaining output gas with required characteristics. Better understanding of Coal Gasification, along with crucial, physicochemical processes influencing parameters determination of its mathematical model, settles the basis for entire process control. In the article the mathematical description of the Coal Gasification process in the ex situ Gasification reactor is presented. The equations of the model were formulated on the energy balance basis, considered for the divided into two areas reaction space. The input quantities of the considered model were the mass streams and temperature of gases used as the Gasification agents (oxygen and water vapour). The proposed model allows to determine the concentrations of basic Gasification products (H2, CO, CO2, CH4) and temperature in the Gasification channel. The results of research and development work carried out in the framework of the HUGE (Hydrogen Oriented Underground Coal Gasification for Europe) project were used for the developed mathematical model validation.

  • Exergy Analysis of the Coal Gasification Process in Ex-Situ Conditions
    Journal of Sustainable Mining, 2015
    Co-Authors: Tomasz Janoszek
    Abstract:

    In this article the possibilities of implementing exergy analysis of Coal Gasification processes in ex-situ conditions was presented. The analysis was performed in order to detect the sources of exergy loss. The experimental results of the Coal Gasification process are also presented and was used as input data to perform the exergy analysis of the Coal Gasification process.

  • Modelling test of cavity growth during underground Coal Gasification process using CFD method
    2014 International Conference on Information Science Electronics and Electrical Engineering, 2014
    Co-Authors: Karolina Nurzyńska, Tomasz Janoszek, Sebastian Iwaszenko
    Abstract:

    Underground Coal Gasification (UCG) is a novel technology, enabling conversion of underground Coal seams into flammable gases. One of the problems in UCG is influence of void space (cavity) developed during the process on produced gas quality and process effectiveness. The article presents the mathematical model for cavity growth under the conditions of underground Coal Gasification. The numerical model of Coal Gasification process is presented. The numerical model, developed in Ansys-Fluent software, was based on analysis and description of the ex-situ experiments simulating underground Coal Gasification. The numerical model was implemented with the use of computational fluid dynamic (CFD) methods. The modelled shape of cavity was verified with the experimental data gathered by means of ground-penetrating radar (GPR) measurements.