ZIF-8浆液中试分离CO2/N2过程模拟及能耗分析

被引:0
|
作者
黄子轩 [1 ]
陈欢 [1 ]
李海 [1 ,2 ]
王明龙 [1 ]
陈光进 [1 ]
刘蓓 [1 ]
机构
[1] 中国石油大学(北京)重质油国家重点实验室
[2] 中国科学院过程工程研究所绿色过程与工程重点实验室
关键词
ZIF-8; 二氧化碳捕集; 填料塔; 过程模拟; 能耗分析;
D O I
暂无
中图分类号
TQ028.17 [];
学科分类号
摘要
ZIF-8/2-甲基咪唑-乙二醇-水浆液(ZIF-8浆液)可以高效低耗能地分离CO2。为了进一步评估ZIF-8浆液在填料塔中分离CO2的塔效率及能耗,使用Peng-Robinson(PR)状态方程,求出CO2和ZIF-8浆液的二元交互作用参数(kCO2),将二元交互作用参数和Aspen Plus软件进行关联,对CO2/N2多级吸收分离进行过程模拟。计算结果表明在中试填料塔中,ZIF-8浆液仅需要5块理论塔板即可将CO2浓度由20%(mol)降低至2%(mol)以下,填料塔的塔板效率为25%。对中试分离CO2/N2进行能耗计算,结果表明当解吸条件为解吸温度333 K,解吸压力0.8 MPa和空气吹扫流量200 L/h时,CO2捕集等效功最低可至0.474 GJ/t CO2。在同样条件下使用ZIF-8浆液和MEA(30%(mass))水溶液进行碳捕集时,CO2捕集等效功分别为0.507 GJ/t CO2和0.957 GJ/t CO2,ZIF-8浆液的CO2捕集等效功仅为MEA水溶液的53%。
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页码:322 / 331
页数:10
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