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A Study on the Optimal Process Design of Cryogenic Air Separation Unit for Oxy-Fuel Combustion
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순산소 연소를 위한 초저온 공기분리장치의 최적공정 설계 연구

논문 기본 정보

Type
Academic journal
Author
Choi, Hyeung-Chul (대성산업가스[주] 초저온연구소) Moon, Hung-Man (대성산업가스[주] 초저온연구소) Cho, Jung-ho (공주대학교 화학공학부)
Journal
한국화학공학회 화학공학 화학공학 제56권 제5호 KCI Accredited Journals SCOPUS
Published
2018.1
Pages
647 - 654 (8page)

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A Study on the Optimal Process Design of Cryogenic Air Separation Unit for Oxy-Fuel Combustion
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Research history (4)

2019

Exergy Analysis of Cryogenic Air Separation Unit for Oxy-fuel Combustion
Hyeung-chul Choi ,  Hung-man Moon ,  Jung-ho Cho JOURNAL OF THE KOREAN INSTITUTE OF GAS 2019.02 Academic journal
(A) study on the process optimization by thermodynamic analysis of cryogenic air separation unit for oxy-fuel combustion
최형철 화학공학과 2019.01 Thesis

2018

The optimization study on cryogenic air separation process for producing ultra high purity nitrogen
Hyeungchul Choi ,  Hyunshik Kim ,  Hungman Moon and others 1 한국가스학회 학술대회논문집 2018.05 Proceeding
A Study on the Optimal Process Design of Cryogenic Air Separation Unit for Oxy-Fuel Combustion
Choi ,  Hyeung-Chul ,  Moon 화학공학 2018.01 Academic journal
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Abstract· Keywords

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In order to solve the global warming and reduce greenhouse gas emissions, it has been developed the $CO_2$ capture technology by oxy-fuel combustion. But there is a problem that the economic efficiency is low because the oxygen production cost is high. ASU (Air Separation Unit) is known to be most suitable method for producing large capacity of oxygen (>2,000 tpd). But most of them are optimized for high purity (>99.5%) oxygen production. If the ASU process is optimized for low purity(90~97%) oxygen producing, it is possible to reduce the production cost of oxygen by improving the process efficiency. In this study, the process analysis and comparative evaluation was conducted for developing large capacity ASU for oxy-fuel combustion. The process efficiency was evaluated by calculating the recovery rate and power consumption according to the oxygen purity using the AspenHysys. As a result, it confirmed that the optimal purity of oxygen for oxyfuel combustion is 95%, and the power consumption can be reduced by process optimization to 12~18%.
#Oxy-fuel combustion #Oxygen #Cryogenic #Air separation #ASU

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