摘要
针对碳捕集吸收剂解吸能耗高的问题,建立了碳捕集系统仿真模型。研究碳捕集系统能量的构成及分布规律,分析结果表明:再沸器的热耗为4.64 GJ/t,贫液冷却器、再生气冷却器释放的热量分别为1.840 8 GJ/t和1.750 1 GJ/t。碳捕集系统的总损损为1.205 GJ/t,解吸塔、吸收塔、换热器的损率分别为33.02%、33.48%、21.83%。
To solve the high energy-consumption issue for desorption process of carbon capturing system, an energy and exergy analysis simulation model is established. The energy composition and distribution rule of carbon capture system are studied. The results show that the heat consumption of the reboiler is huge （4. 64 GJ- （ tCO2 ） ^-1 ）. The heat loss of the lean MEA cooler and regeneration cooler are 1. 840 8 GJ·（ tCO2 ）^ - 1 and 1. 750 1 GJ·（ tCO2 ）^ - 1 , respectively. The energy saving potential of two units is tremendous. The total exergy loss of the carbon capture system is 1. 205 GJ·（tCO2） ^-1 The exergy loss of the stripper （including the flasher and the regeneration cooler） and absorber are the largest and their exergy loss rates are 33.02% and 33.48 % , respectively. For all the heat exchangers, the exergy loss of the regeneration cooler is the largest. Its exergy loss rate is 21.83%.
出处
《现代化工》
CAS
CSCD
北大核心
2015年第12期154-157,共4页
Modern Chemical Industry
关键词
碳捕集
节能改造
流程模拟
[火用]分析
carbon capture
energy saving
process simulation
exergy analysis
