Exergy and energy analysis of a load regulation method of CVO of air separation unit
作者： Lige Tong , Aijing Zhang , Yongliang Li , Li Yao , Li Wang
DOI: 10.1016/J.APPLTHERMALENG.2015.01.074
关键词: Oxygen 、 Exergy efficiency 、 Air separation 、 Energy consumption 、 Exergy 、 Liquefaction 、 Waste management 、 Load regulation 、 Engineering 、 Electricity
摘要: Abstract Generally in the Chinese iron and steel industry, electricity consumption of cryogenic air separation unit (ASU) is about 14% overall use. To reduce consumption, combined variable oxygen (CVO) supply method for ASU proposed. The exergy calculation program was developed detailed analysis CVO performed. results show that general efficiency (GEE) with a liquefaction increased by 11 %–31 %. oxygen, total (OCUO) compared. OCUO suitable to evaluate energy-saving potential CVO. Compared load regulation Automatic Load Control (ALC), compression reduced more than 4.47% 30%, respectively. It means CO 2 emission every reduction 1% gaseous release year industry will contribute approximately 0.75% 2020s target China.
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