Development of a laboratory unit and a solid fuel gasification reactor
DOI:
https://doi.org/10.33216/1998-7927-2024-281-1-98-101Keywords:
pyrolysis coal, gasification, combustible gases, gas mixture, carbon dioxide, oxygen, gasification reactorAbstract
The paper investigates the process of gasification of pyrolysis coal and other coal-containing materials
A schematic diagram of the installation of the gasification process of pyrolysis coal and other coal-containing materials was developed, the design of the reactor for coal gasification and the methodology for conducting experiments and analysing the gasification process of pyrolysis coal and other coal-containing materials were developed. Research methods - modelling of the coal gasification process using the results of theoretical studies.
A detailed analysis of the experimental and theoretical data concerning the feasibility of the pyrolysis coal gasification process was carried out, a schematic diagram of the laboratory installation and the design of the gasification reactor were developed.
The main goal is to develop a method of gasification of solid pulverised fuel that will simplify the process control and ensure its stability due to the unity of the drying and gasification processes of pyrolysis coal, which are linked by means of a gasification reactor. Additionally, this method provides for the neutralisation of harmful impurities generated during the coal gasification process.
As a result of theoretical studies of the solid fuel gasification process, a design of a coal gasification reactor was proposed, which is an ideal displacement reactor. The length-diameter ratio for the working part of the reactor should be at least 10:1. It is proposed to use a heat-resistant molybdenum steel tube (operating temperature up to 1600 0C) with a diameter of two inches to manufacture the reactor. Also, to study the gasification process of pyrolysis coal and other coal-containing materials, a laboratory installation for gasification of solid crushed fuel is proposed, in which a gas mixture of carbon dioxide and oxygen is fed into the reactor and serves as an activator of the gasification process. The prospects of coal processing by gasification to produce a mixture of combustible gases (H2, CO, CH4) are investigated. It is analysed that coal gasification allows obtaining valuable gas that can be used not only as an energy fuel, but also as a technological raw material for the production of methanol, dimethyl ether, hydrogen production, and use as a reducing agent in metallurgical processes.
References
1. Bijan Hejazi, John R. Grace, Xiaotao Bi, Andrés Mahecha-Botero. Kinetic model of steam gasification of biomass in a bubbling fluidized bed reactor. Energy Fuels. 2017. Canada, 31(2), 1702– 1711. https://doi.org/10.1021/acs.energyfuels.6b03161
2. Lys, S. S. (Ed.), Kravets, T. Yu., Mysak, Y. S. Hazyfikatsiia tverdoho palyva u sutsilnomu shari: monohrafiia. Lviv: Rastr-7, 2018. 210 p.
3. Lys, S. S. (Ed.). Termichne pereroblennia nyzkosortnykh palyv u hazopodibne palyvo dlia vykorystannia v teploenerhetychnykh ustanovkakh. Scientific Bulletin of UNFU, 2017. 27(3), 145–147. https://doi.org/10.15421/40270332
4. Mingaleeva, G., Ermolaev, D., & Galkeeva, A. (Eds.) Physico-chemical foundations of produced syngas during gasification process of various hydrocarbon fuels. Clean Technologies and Environmental Policy, 18, 2016. 297–304. https://doi.org/10.1007/s10098-015-0988-8
5. Photochemical Water Decomposition in the Presence of Nitrogen Dioxide in Troposphere: Density Functional Study with a Symmetrized Kohn-Sham Formalism/ B. F. Minaev, I. I. Zakharov, A. B. Tselishtev [and other] // ChemPhysChem. 2010. Vol. 11. Issue 18, DOI: 10.1002/cphc.201000440. Р. 4028-4034.
