Two-zone air blow gas generator with fluidized bed

Autor: Aleksey Dubinin, Vladimir Tuponogov, Aleksey Ryzhkov, Yuriy Kagramanov, Egor Labintsev
Jazyk: ruština
Rok vydání: 2019
Předmět:
Zdroj: Известия Томского политехнического университета: Инжиниринг георесурсов, Vol 326, Iss 3 (2019)
Druh dokumentu: article
ISSN: 2500-1019
2413-1830
Popis: This paper considers the topicality of developing techniques for gas generation from solid fuels and its application in power installations, including cogeneration. Low temperature technologies with thermo-chemical coal conversion in fluidized bed reactors are the most perspective ones. The authors have developed the construction of two zone gas reactor with fluidized bed and studied its operation in set of electrical power station with gas pump engine cycles, or in combined cycles. The reactor works with air coal gasification. Zones of fuel input and product (clean synth-gas without resin) output the part of which is combusting in reactor for autothermal process running are separated. The authors propose the chemical-kinetic model of gasification to calculate the output synth-gas composition along the reaction zone height and at outlet from the reactor. The gasification process optimization along the temperature in gasification zone was done according to this model. The optimal temperature of the process corresponds to maximum output of synth-gas. The paper introduces the experimental data of theoretical calculations in gas reactor with fluidized bed. As a result, the optimal temperature value was determined as 820 °C, the output synth-gas part was 0,92 for Borodinsky coal. The output synth-gas with its composition and combustion heat values can be used as a low-cal fuel in combustion cameras of electrical power stations with gas pump engines and in combined cycles with two step air heating, that requires more researches and development of this technology.
Databáze: Directory of Open Access Journals
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