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Comparative simulation of hydrogen production derived from gasification system with CO 2 reduction by various feedstocks
Author(s) -
Shim Hyun Min,
Chun Won Gee,
Kim Hyung Taek
Publication year - 2010
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.1647
Subject(s) - integrated gasification combined cycle , syngas , wood gas generator , waste management , coal , electricity generation , coal gasification , hydrogen production , process engineering , raw material , slurry , pulverized coal fired boiler , fossil fuel , environmental science , hydrogen , chemistry , engineering , environmental engineering , organic chemistry , power (physics) , physics , quantum mechanics
Integrated gasification combined cycle (IGCC) technology is recognized as an alternative to conventional fossil fuel power plants for cleaner electricity generation. As well as electricity, chemical energy is also produced in the form of syngas that can be further converted into valuable chemicals such as hydrogen, dimethyl ether and synthetic fuel. This study focuses on 300 MW e scale gasification system for poly‐generation of both H 2 and electricity by utilizing various feedstocks while achieving CO 2 capture using monoethanolamine absorption. The investigated feedstocks are pulverized dry coal and coal water slurry from Illinois ♯6 coal, bunker‐C, naphtha and bitumen. A simulation model of the gasification system is prepared with the following sub‐processes: fuel preparing, gasification, ash removal, acid gas removal, water gas shift, H 2 purification process and combined cycle model simulated by ASPEN plus. The performance of the developed model is compared for each feedstock in terms of poly‐generation and CO 2 capture, according to the following evaluation parameters: cold gas efficiency and carbon conversion of the gasifier, production rate of H 2 , plant net efficiency and CO 2 avoidance. Finally, sensitivity analysis is conducted on the following operating parameters of the shifted reactors for H 2 production: divergence fraction, temperature and reactor pressure. Copyright © 2009 John Wiley & Sons, Ltd.