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LAPSE:2018.0443v1
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LAPSE:2018.0443v1
Optimization of Coke Oven Gas Desulphurization and Combined Cycle Power Plant Electricity Generation
September 11, 2018
Many steel refineries generate significant quantities of coke oven gas (COG), which is in some cases used only to generate low pressure steam and small amounts of electric power. In order to improve energy efficiency and reduce net greenhouse gas emissions, a combined cycle power plant (CCPP) where COG is used as fuel is proposed. However, desulphurization is necessary before the COG can be used as a fuel input for CCPP. Using a local steel refinery as a case study, a proposed desulphurization process is designed to limit the H2S content in COG to less than 1 ppmv, and simulated using ProMax. In addition, the proposed CCPP plant is simulated in Aspen Plus and is optimized using GAMS to global optimality with net present value as the objective function. Furthermore, carbon tax is considered in this study. The optimized CCPP plant was observed to generate more than twice the electrical efficiency when compared to the status quo for the existing steel refinery. Thus, by generating more electricity within the plant gate, the need to purchase electricity reduces and hence reducing lifecycle CO2 emissions considerably.
Title in Alternate Language
焦炉煤气除硫以及联合循环发电的优化
Keywords
carbon tax, coke oven gas valorization, combined cycle power plant, desulphurization, net present value, Optimization, steel refinery
Suggested Citation
DENG L, Adams TA II. Optimization of Coke Oven Gas Desulphurization and Combined Cycle Power Plant Electricity Generation. (2018). LAPSE:2018.0443v1
Author Affiliations
DENG L: McMaster University [ORCID]
Adams TA II: MCMASTER UNIVERSITY [ORCID]
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Journal Name
Industrial and Engineering Chemistry Research
Year
2018
Publication Date
2018-08-28
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Sep 11, 2018
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Sep 11, 2018
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Sep 11, 2018
Aspen Plus Model
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[v3] (Revision of Version 2)
Sep 12, 2018
[v2] (Revision of Version 1)
Sep 11, 2018
[v1] (Original Submission)
Sep 11, 2018
 
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https://psecommunity.org/LAPSE:2018.0443v1
 
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Directly Related to This Work
Coke Oven Gas Conversion Efficiency Improvement by System Upgrading to Combined Cycle Power Plant
 
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