A study on the reaction kinetics of HCl removal from high-temperature coal gas

A study on chloride removal from high-temperature coal gas shows that all the tested sorbents can rapidly react with HCl vapor and reduce the HCl vapor concentration to less than 1×10 −6 in a fixed-bed reactor. The ECl1 sorbent lab-made has the highest chloride capacity. The experimental data obtain...

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Bibliographic Details
Published in:Fuel processing technology 2001-08, Vol.72 (1), p.23-33
Main Authors: Dou, Bin-lin, Gao, Jin-sheng, Sha, Xing-zhong
Format: Article
Language:English
Subjects:
Air pollution caused by fuel industries
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
High-temperature coal gas
Kinetics of the reaction
Pollution reduction
Sorbent for chloride removal
Stack gas and industrial effluent processing
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Summary:A study on chloride removal from high-temperature coal gas shows that all the tested sorbents can rapidly react with HCl vapor and reduce the HCl vapor concentration to less than 1×10 −6 in a fixed-bed reactor. The ECl1 sorbent lab-made has the highest chloride capacity. The experimental data obtained were analyzed by a model based on fixed-bed reactor and shrinking core models, It is found that reaction between sorbent and HCl vapor is of first-order with respect to initial HCl concentration. The reaction is governed by combination of the chemical reaction and product layer diffusion.
ISSN:0378-3820
1873-7188
DOI:10.1016/S0378-3820(01)00176-X