燃煤电厂CO_2捕集与咸水层封存全过程经济性模型  

A model of economy for overall process of CO_2 capture and saline storage

作　　者：王宝群[1] 李会泉[1] 包炜军[1] 

机构地区：[1]中国科学院过程工程研究所,湿法冶金清洁生产技术国家工程实验室,北京100190

出　　处：《化工学报》2012年第3期894-903,共10页CIESC Journal

基　　金：中国科学院知识创新工程重要方向项目子课题(KGCX2-YW-323-1);中国科学院战略性先导科技专项--应对气候变化的碳收支认证及相关问题资助项目(XDA05010104);国家自然科学基金项目(50974112)~~

摘　　要：碳捕集与封存技术(即CCS技术)通过对CO2进行捕集、压缩、运输与封存,可实现CO2大规模减排,近年来受到广泛关注。CCS技术的经济成本是其商业化的关键因素,但目前多数研究都集中在捕集过程,CCS全过程的经济成本分析鲜见报道。针对CO2捕集与咸水层封存系统,给出了捕集封存全过程投资运行总成本和捕集封存整体系统CO2减排成本的计算公式,建立了CO2捕集、压缩、管道运输与咸水层封存全过程的成本估算模型,并对典型的600MW超临界燃煤电厂捕集封存CO2的投资运行成本和减排成本进行了案例研究。Carbon capture and storage（CCS） consists of separation,compression,transportation and storage of CO2 from exhaust gas such as vent gases of coalfired power plant.CCS is considered to be the most effective choice for mitigating greenhouse gas of CO2 in the middle and short-term,and attracts more attention recently.Although CCS has been proved to be feasible in technology,it is still unsuitable for commercialization on a large scale due to high cost at present.Most models developed for cost estimation focused on individual process of CCS,especially on capture process.In this paper,definition formulas were given to calculate the total cost of CCS overall process and of emission cuts of CO2.Furthermore,a model economy is developed to estimate total capital and cost for MEA capture,compression,pipeline transportation and saline storage.The economic study for a case of 600 MW PC power plant is also carried out in the paper.The results show that,when CO2 recovery efficiency ranges from 70% to 99%,the total CCS cost for the case is 257—269 CNY·（t CO2）-1,and the cost for emission reduction of CO2 is 364.8—384.2 CNY·（t CO2）-1 respectively.

关 键 词：CO2捕集 CO2运输 咸水层封存 电厂 经济性 

分 类 号：TK-9[动力工程及工程热物理]