燃煤电厂尾气中CO_2捕集技术研究  

Study on CO_2 Capture Technology for Coal-fired Power Plant Tail Gas

作　　者：蒲鹤[1] 梁光川[1] 何慧娟[1] 陈晓春 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]青岛泰能天然气有限公司,山东青岛266000

出　　处：《天然气与石油》2013年第6期52-54,9,共3页Natural Gas and Oil

基　　金：国家自然科学基金国际合作交流项目(512101105);特色重点学科建设项目资助青年教师科学基金项目;四川省教育厅青年基金项目(省609)

摘　　要：燃煤电厂燃烧煤炭产生电能,燃料燃烧后向大气排放大量的CO2,导致温室效应随之增强,引起全球变暖、雾霾等一系列严重问题,因此选择合理的CO2捕集技术是减少CO2排放的主要途径。捕集技术可分为物理吸收、化学吸收、物理-化学吸收、膜吸收及生物技术等,其中物理吸收和化学吸收为电厂CO2捕集的主要方法。针对燃煤电厂烟道尾气的特点,选择物理类的MDEA法和化学类的NHD法对CO2进行捕集,利用Aspen Plus软件对两种方法分离CO2流程进行模拟,通过对两种方法的工艺流程、CO2吸收效率、过程能耗、吸收剂流量等的比较,根据燃煤电厂尾气气质条件,决定脱碳工艺采用MEDA法。Coal-fired power plant in operation may discharge a large of CO2 into the air and pollute the environment severely.Selection of reasonable CO2 capture technologies is main way of decreasing CO2 discharge.Capture technologies includes physical absorption,chemical absorption,physical-chemical absorption,membrane technology and biotechnology.Among these technologies,physical absorption and chemical absorption are principal methods for capturing CO2 discharged from coal-fired power plant.According to the characteristics of flue gas,physical MDEA method and chemical NHD method are selected for captureing CO2,adopted is the software Aspen Plus to simulate CO2 separation process and conducted is contrastive analysis on technological processes of the two methods,their different CO2 absorption efficiencies,process energy consumptions and absorbent flows and it is decided that MDEA method is selected for decarburization according to exhaust temperament conditions of coal-fired power plant.

关 键 词：燃煤电厂 CO2 脱碳 MEDA NHD 

分 类 号：X773[环境科学与工程—环境工程]