Effect of multi-component gas on removal of trace hydrogen sulfide activity from blast furnace gas using activated carbon adsorbent-Reference-Cited by-同舟云学术

Effect of multi-component gas on removal of trace hydrogen sulfide activity from blast furnace gas using activated carbon adsorbent

Published:2024-08-01 Issue:8 Volume:22 Page:867-878
ISSN:1542-6580
Container-title:International Journal of Chemical Reactor Engineering
language:en
Short-container-title:

Author:

Wan Jun¹,Liu Meng¹,Liu Wei¹,Ding Wenxi¹,Duan Yufeng¹

Affiliation:

1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment , 12579 Southeast University , Nanjing 210000 , China

Abstract

Abstract In the steel industry, blast furnace gas (BFG) is huge with complex components. The existence of hydrogen sulfide (H2S) in the BFG can produce sulfur dioxide (SO2) after combustion, which will increase the source of SO2 pollution and make the desulphurization more difficult, to be threat to people health. At present, the removal of H2S by dry adsorption with modified activated carbon adsorbent is a high-precision and low-cost desulphurization method. However, the effect of complex gas components in BFG on the adsorption of H2S by activated carbon adsorbent is not sufficient. Based on the fixed bed adsorbent evaluation system, a new type of highly efficient copper-cerium oxide (Cu–Ce–O) modified activated carbon H2S adsorbent was developed. And the effects of carbon monoxide (CO), carbon dioxide (CO2), hydrogen (H2), oxygen (O2), sulfur dioxide and hydrogen chloride (HCl) in BFG on the desulfurization activity of adsorbents were investigated. The results showed that the performance of H2S removal decreased in the presence of CO, CO2, HCl and SO2, and improved in the presence of H2 and O2. Other parameters were also studied which might influence the process. The application of modified activated carbon adsorbent in simulated BFG is basically stable. According to the fitting results of adsorption kinetics for the five adsorption models, as the atmosphere becomes BFG from N2, pore diffusion becomes the main adsorption form. However, the effects of internal diffusion, chemical adsorption and external mass transfer decreased. The Bangham model is the most suitable model to describe H2S adsorption process.

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/ijcre-2024-0065/pdf

Reference27 articles.

1. H. Wang, X. Ping, J. Zhou, X. Li, L. Lu, “Review and prospect of green development for Chinese steel industry,” Iron Steel, vol. 58, no. 2, pp. 8–18, 2023a. https://doi.org/10.13288/j.boyuan.issn0449-749x.20220465.

2. X. Wang, T. Wang, and Y. Li, “Research progress on desulfurization technology for blast furnace gas,” Chin. J. Process Eng., no. 07, pp. 1003–1012, 2023b. https://doi.org/10.12034/j.issn.1009-606X.222334.

3. J. Sun, W. Yang, and X. Du, “Present situation and technical route analysis of blast furnace gas de-sulfurization,” Metall. Power, no. 10, pp. 13–18, 2020. https://doi.org/10.13589/j.cnki.yjdl.2020.10.006.

4. X. Li, et al.., “Selection of desulfurization process for ultra-low emission of blast-furnace gas,” Shandong Chem. Ind., no. 19, pp. 104–105+109, 2020. https://doi.org/10.19319/j.cnki.issn.1008-021x.2020.19.042.

5. M. Abian, M. Cebrián, Á. Millera, R. Bilbao, and M. U. Alzueta, “CS2 and COS conversion under different combustion conditions,” Combust. Flame, vol. 162, no. 5, pp. 2119–2127, 2015. https://doi.org/10.1016/j.combustflame.2015.01.010.