基于MEA的船舶碳捕集参数优化和工艺研究  

Optimization of Carbon Capture Parameters and Process Research for Ships Based on MEA

作　　者：陈章伟 吕越 董文峰[1] 贾文广[1] Chen Zhangwei;Lv Yue;Dong Wenfeng;Jia Wenguang(School of Mechanical and Electrical Engineering,Qingdao University of Science and Technology,Shandong,266061)

机构地区：[1]青岛科技大学机电工程学院,山东266061

出　　处：《当代化工研究》2025年第4期142-144,共3页Modern Chemical Research

摘　　要：化学吸收法碳捕集是目前减少船舶海洋运输中碳排放的可行方法,然而船舶尾气碳捕集存在再生能耗较高问题。应用Aspen Plus搭建了针对Wärtsilä6L34DF柴油发动机船舶尾气单乙醇胺碳捕集工艺模型。通过该模型对液气比、再生压力进行参数优化,系统再生能耗降低为3.71 GJ/t CO_(2)。为进一步降低系统能耗,设计并研究了两种贫液闪蒸工艺和烟气余热利用耦合方案,模拟结果表明贫液闪蒸工艺与烟气加热闪蒸罐方案节能效果最佳,系统再生能耗降至0.69 GJ/kg CO_(2),较传统工艺节能81.4%。Chemical absorption carbon capture represents a viable strategy for mitigating carbon emissions in marine transportation.However,ship exhaust carbon capture faces the challenge of high energy consumption during the regeneration process.Aspen Plus was utilized to establish a carbon capture process model for a Wärtsilä6L34DF diesel engine ship exhaust,employing monoethanolamine(MEA)as the absorbent.Through this model,the liquid-gas ratio and regeneration pressure parameters were optimized,resulting in a reduction of the system's regeneration energy consumption to 3.71 GJ/t CO_(2).To further minimize the system's energy consumption,two coupling schemes were designed and investigated:The poor liquid flash evaporation process and the flue gas waste heat utilization.The simulation outcomes indicated that the poor liquid flash evaporation process coupled with the flue gas heating flash tank scheme exhibited the most significant energy-saving effect,achieving a regeneration energy consumption of 0.69 GJ/kg CO_(2).This represented an 81.4%energy savings compared to the traditional process.

关 键 词：船舶碳捕集 MEA吸收剂 液气比 贫液闪蒸 余热利用 

分 类 号：X5[环境科学与工程—环境工程]