MDEA吸收法天然气脱硫过程节能途径探讨  

Energy Saving during Gas Desulfurization by MDEA Absorption

作　　者：王正权[1] 王瑶[1] 席红志[2] 王毅[2] 匡国柱[1] 

机构地区：[1]大连理工大学化工学院,辽宁大连116012 [2]中国石油西南油气田公司重庆天然气净化总厂,重庆401220

出　　处：《天然气技术》2010年第2期55-58,共4页NATURAL GAS TECHNOLOGY

摘　　要：N-甲基二乙醇胺(MDEA)吸收H2S技术广泛应用于天然气脱硫中。对典型的MDEA吸收流程进行分析表明,MDEA溶液再生能耗较大,过程物流能量未得到充分利用。为此,提出了热泵流程和半贫液流程两种节能改造方案,用PROII软件对流程进行模拟计算,并对典型流程及改造流程进行热力学效率分析。结果表明,与典型流程相比,热泵流程和半贫液流程的热力学效率分别提高了5.23%和6.39%。A technology, Nmethyldiethanolamine(MDEA) adsorbing H2S, has been widely applied to gas desulfurization. An analysis on typical MDEA absorption illustrates that a lot of energy should be consumed during MDEA solution’s regeneration and energy can not be made full use during absorption. In this paper, two energy-saving modified methods of both heatpump absorption and semi lean solution absorption are presented at first; and then, the adsorptions are simulated and calculated by PROII software; at last, a thermodynamical analysis on both typical and modified absorptions is conducted. Results show that compared to the typical one, the thermodynamical efficiency of heatpump one can be increased by 5.23% whereas the efficiency of semi lean solution one increased by 6.39%, respectively.

关 键 词：MDEA 天然气脱硫 流程改造 热力学效率 

分 类 号：TE644[石油与天然气工程—油气加工工程]