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Development and techno-economic study of methanol production from coke-oven gas blended with Linz Donawitz gas

Title
Development and techno-economic study of methanol production from coke-oven gas blended with Linz Donawitz gas
Authors
Shin, SunkyuLee, Jeong-KeunLee, In-Beum
Date Issued
Jun-2020
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
Coke-oven gas and Linz Donawitz gas are pollutive by-product gases generated from steel plants. The gases are currently combusted or released to atmosphere, but those can be economically utilized as chemical product. Thus, this study proposes improved methanol production process from the gases, by considering two different strategies: efficiency (Case 1) and productivity (Case 2). Both processes are rigorously integrated using Aspen Plus V10 and evaluated from the perspectives of productivity, thermodynamic efficiency, environmental impact, and techno-economics. Compared to Case 1, Case 2 had 2.1 times the productivity but required 3 times natural gas. As a result, Case 1 showed better efficiencies of 58-68% (46-56% in Case 2), reduced larger carbon emission of 425 kmol/h (123 kmol/h in Case 2), and had lower minimum selling price of 371 $/tonne (398 $/tonne in Case 2). Two proposed processes are also economically superior than similar previous processes (550-712 $/tonne). This study confirms that both presented novel processes are sustainable and economically viable, and also improves the understanding of methanol production from the waste gases of steel production. (C) 2020 Elsevier Ltd. All rights reserved.
Keywords
Coke; Coke ovens; Economic analysis; Efficiency; Environmental impact; Gases; Industrial ovens; Methanol; Natural gasoline plants; Productivity; Steelmaking; Carbon emissions; Chemical products; Economically viable; Methanol production; Steel production; Techno-economic studies; Techno-economics; Thermodynamic efficiency; Gas industry
URI
http://oasis.postech.ac.kr/handle/2014.oak/103784
ISSN
0360-5442
Article Type
Article
Citation
ENERGY, vol. 200, 2020-06
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 LEE, IN BEUM
Dept. of Chemical Enginrg
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