天然气选择性脱硫胺液配方发泡特性分析  

Analysis of foaming characteristics of formulated amine solutions for selective desulfurization of natural gas

作　　者：刘倩玉 杨超江 唐建峰[1,2] 张媛媛 张夕明 刘鑫博 LIU Qian-yu;YANG Chao-jiang;TANG Jian-feng;ZHANG Yuan-yuan;ZHANG Xi-ming;LIU Xin-bo(College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao 266580,China;Shandong Provincial Key Laboratory of Oil and Gas Storage and Transportation Safety,China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]中国石油大学(华东)山东省油气储运安全省级重点实验室,山东青岛266580

出　　处：《天然气化工—C1化学与化工》2020年第2期81-89,共9页Natural Gas Chemical Industry

基　　金：中央高校基本科研业务费专项资金资助项目(14CX05033A)。

摘　　要：现阶段以MDEA为主体的配方型胺液在选择性脱硫工厂中应用较广泛,但MDEA存在易发泡的缺点,影响着整个脱酸系统的安全稳定运行。本文选取选择性脱硫吸收性能较好的MDEA、DGA、AMP以及环丁砜四种胺液,通过考察其单一及复配胺液的发泡高度及消泡时间,结合测定的表面张力参数,分析选择性脱硫胺液配方发泡特性及发泡机理,并建立发泡特性预测模型。通过分析得知,四种单一胺液发泡由易到难排序为:DGA>AMP>MDEA>环丁砜;MDEA+AMP复配配方发泡高度和消泡时间均处于较高水平,应避免选用MDEA质量分数为23%~27%、AMP质量分数为8%~16%的范围;对于MDEA+DGA复配配方,应避免选用MDEA质量分数为28%~36%、DGA质量分数高于8%的范围;MDEA+环丁砜复配配方发泡特性处于较低水平,MDEA的质量分数应避免在20%~24%的范围,环丁砜质量分数应避免低于4%。At present, MDEA is widely used in the selective desulfurization plants, but MDEA is easy to foam, which affects the safe and stable operation of the whole deacidification system. In this paper, four amines, MDEA, DGA, AMP and sulfolane, which have good selective desulfuration absorption performance, were selected to investigate the foaming height and defoaming time of each single amine solution and the formulated amine solutions of MDEA mixed with the other three amines, respectively. For the MDEA +AMP solution, the foaming height and defoaming time are all at a high level, and it should avoid selecting the MDEA and AMP concentration ranges of 23% to 27% and 8% to 16%, respectively. For the MDEA + DGA solution, the concentrations of MDEA and DGA should avoid in the range of 20% to 24% and above 8%, respectively. The foaming level of the MDEA + sulfolane solution is low, and its concentrations of MDEA and sulfolane should avoid in the range of 22% to 24% and below 4%, respectively.

关 键 词：天然气 选择性脱硫 配方型胺液 发泡高度 消泡时间 表面张力 发泡特性预测 

分 类 号：TE64[石油与天然气工程—油气加工工程] TQ028.25[化学工程]