TEA＋MEA、TEA＋DETA混合胺液脱除模拟天然气中H2S的性能  

Performance of TEA+MEA,TEA+DETA Mixed Amine in Removing H_2S From Simulated Natural Gas

作　　者：唐建峰 史泽林 陈杰 徐明海 花亦怀 姜雪 李晶 张新军 

机构地区：[1]中国石油大学储运与建筑工程学院,山东青岛266580 [2]中海石油气电集团技术研发中心,北京100027

出　　处：《石油学报（石油加工）》2015年第5期1082-1088,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重大基础研究“863”项目(2013AA09A216);中央高校基本科研业务费专项资金(14CX05033A)资助

摘　　要：以H2S体积分数为2%的H2S+CH4作为模拟天然气,在吸收温度50℃、吸收压力5MPa、解吸温度105℃的操作条件下,实验研究了三乙醇胺(TEA)与乙醇胺(MEA)以及三乙醇胺(TEA)与二乙烯三胺(DETA)摩尔配比为2、4、14的TEA+MEA、TEA+DETA两种混合胺液的H2S吸收与解吸性能,以吸收负荷、吸收速率、解吸率为指标筛选相对较优的混合胺液配方。结果表明,在实验范围内,TEA+MEA混合胺液系列中,TEA/MEA摩尔比为2的TEA+MEA混合胺液具有最优的H2S吸收和解吸性能;TEA+DETA混合胺液系列中,TEA/DETA摩尔比为4的TEA+DETA混合胺液具有最优的H2S吸收和解吸性能。与TEA/MEA摩尔比为2的TEA+MEA相比,TEA/DETA摩尔比为4的TEA+DETA具有较高的H2S吸收速率与解吸率,综合脱硫效果较好。With the mixture of H2S＋CH4as simulated natural gas,in which the volume fraction of H2 S is 2%,under the operating conditions of absorption temperature 50℃,absorption pressure5 MPa,desorption temperature 105℃,the H2 S absorption and desorption performance of triethanolamine（TEA）＋monoethanolamine（MEA）and TEA＋diethylenetriamine（DETA）mixed amine solutions with TEA/MEA or TEA/DETA molar ratio of 2,4and 14,respectively,were investigated.And the absorption load,absorption rate and desorption rate were used as the indices to get the optimum ratio of mixed amine solution.The results showed that in the experimental range the TEA＋MEA solution with TEA/MEA molar ratio of 2in the series of TEA＋MEA mixed amine solutions and the TEA＋DETA solution with TEA/DETA molar ratio of 4in the series of TEA＋ DETA solutions both possessed optimal H2 S absorption and desorption performance.Furthermore,the desulfurization performance of the TEA ＋ DETA amine solution with TEA/DETA molar ratio of 4 was better than that of the TEA ＋ MEA amine solution with TEA/MEA molar ratio of 2.

关 键 词：醇胺法 天然气 H2S 吸收 解吸 

分 类 号：TE644[石油与天然气工程—油气加工工程]