ATTENTION-BASED DEEP LEARNING MODEL FOR FACIAL EXPRESSION RECOGNITIONDEVELOPMENT OF A CIRCULATING FLUIDIZED BED PARTIAL GASIFICATION PROCESS FOR CO-PRODUCTION OF METALLURGICAL SEMI-COKE AND SYNGAS AND ITS INTEGRATION WITH POWER PLANT FOR ELECTRICITY PRODUCTION
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Date
2022
Authors
Tokmurzin, Diyar
Adair, Desmond
Dyussekhanov, Timur
Suleymenov, Kalkaman
Golman, Boris
Aiymbetov, Berik
Journal Title
Journal ISSN
Volume Title
Publisher
Taylor and Francis Group
Abstract
Coal, coke, and semi-coke are currently irreplaceable materials in the
iron and steel industry. Coal is converted to coke or semi-coke in fixed
bed coke-ovens which have many drawbacks and cause environmental
damage. A novel method for the production of semi-coke using circulating
fluidized bed partial coal gasification is experimentally studied.
The method involves a fast devolatilization stage which promises to
reduce the effect on the environment compared to conventional cokeovens.
Experiments are conducted with high volatile Shubarkol coal in
a custom-made atmospheric reactor consisting of a riser, a cyclone,
a loop seal, and equipped with a semi-coke withdrawal system. The
reactor is operated autothermally, at temperatures varying from 700°C
to 1000°C. The coal feed rate varies from 40 to 70 kg/h, with a particle
size distribution up to 20mm. During the experiments, char samples are
withdrawn from the riser and the standpipe. The samples have a volatile
content of 3-6%, carbon content above 85%, high structural strength
(92.64%), low bulk density (270 kg/m3) and high porosity (28.4%) compared
to conventionally produced semi-coke. It is confirmed that even
using the laboratory scale setup it is possible to produce up to 0.367 kg
of semi-coke per kg of coal.
Description
Keywords
Type of access: Open Access, coal, coke, semi-coke, metallurgical semi-coke, Research Subject Categories::TECHNOLOGY
Citation
Diyar Tokmurzin, Desmond Adair, Timur Dyussekhanov, Kalkaman Suleymenov, Boris Golman & Berik Aiymbetov (2022) Development of a circulating fluidized bed partial gasification process for co-production of metallurgical semi-coke and syngas and its integration with power plant for electricity production, International Journal of Coal Preparation and Utilization, 42:3, 899-924, DOI: 10.1080/19392699.2019.1674842