聚酰亚胺中空纤维膜对油田伴生气中二氧化碳分离性能的研究
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摘要
采用实验室自制的聚酰亚胺中空纤维膜,系统考察了原料侧放空气流量、原料气压力、温度、组成、膜丝填充率等参数对油田伴生气中CO_2分离效果的影响.实验结果证明,原料侧放空气流量对整体分离性能影响最为显著;升高原料气压力会增加处理量,但对分离性能无明显影响;升温导致渗透加速但是分离性能有下降趋势;原料气中CO_2浓度变大导致膜的渗透速率随之变大;50%装填率表现出了最佳的分离效果.在580h测试过程中聚酰亚胺膜渗透分离性能较为稳定.这些结果揭示了相关参数对该分离过程影响的规律,并验证了聚酰亚胺中空纤维膜用于油田采出气中CO_2分离回收的可靠性.
Using the self-made polyimide hollow fiber membranes,influences of released gas flowrate on feed side,feed gas pressure,temperature,composition and fiber packing density on CO2 removal performance from oil field associated gas were systematically investigated.The experimental results showed that released gas flowrate on feed side has the most significant influence on overall separation performance;feed gas pressure directly determines the treatment capacity but has no obvious effect on the separation performance;increased feed gas temperature leads to better permeation but declined separation performance;increase of CO2 concentration in feed gas leads to increased permeation flux;50%fiber packing density has been proven to be the best choice.The permeation and separation performance of polyimide membrane was quite stable during the long duration test of 580 hours.These results have revealed the influence rules of related parameters on this separation process and verified the reliability of polyimide hollow fiber membrane for the separation and recovery of CO2 from oil field associated gas.
Using the self-made polyimide hollow fiber membranes,influences of released gas flowrate on feed side,feed gas pressure,temperature,composition and fiber packing density on CO2 removal performance from oil field associated gas were systematically investigated.The experimental results showed that released gas flowrate on feed side has the most significant influence on overall separation performance;feed gas pressure directly determines the treatment capacity but has no obvious effect on the separation performance;increased feed gas temperature leads to better permeation but declined separation performance;increase of CO2 concentration in feed gas leads to increased permeation flux;50%fiber packing density has been proven to be the best choice.The permeation and separation performance of polyimide membrane was quite stable during the long duration test of 580 hours.These results have revealed the influence rules of related parameters on this separation process and verified the reliability of polyimide hollow fiber membrane for the separation and recovery of CO2 from oil field associated gas.
引文
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[16]叶向群,孙亮,张林,等.中空纤维膜基吸收法脱除空气中二氧化碳的研究[J].高校化学工程学报,2003,17(3):237-242.
[17]袁力,王志,王世昌.膜吸收技术及其在脱除酸性气体中的应用研究[J].膜科学与技术,2002,22(4):55-59.
[18]陈炜,朱宝库,王建黎,等.中空纤维膜接触器分离CO2/N2混合气体的研究)[J].膜科学与技术,2004,24(1):32-37.
[19]李合兴,曹义鸣,孙承贵,等.α-纤维素中空纤维致密膜组件吸收CO2传质过程的研究[J].石油化工,2007,36(4):345-348.
[20]王保国,吕宏凌,杨毅.膜分离技术在石油化工领域的应用进展[J].石油化工,2006,35(8):705-710.
[21]王明玺,王保国,赵洪,等.促进传递型支撑液膜分离有机溶剂的研究进展[J].石油化工,2004,33(2):178-185.
[2]Mandal B P,Bandyopadhyay S S.Simultaneous absorption of carbon dioxide and hydrogen sulfide into aqueous of 2-amine-2-methyl-1-propanol and diethanolamine[J].Chem Eng Sci,2005,60:6438-6451.
[3]梁其煜,李式模,邵皓平.变压吸附技术的发展[J].低温工程,1997,(5):9-13.
[4]陈全福,叶懋权,黄正鹏.石油伴生气中CO2气体分离技术评析[J].国外油田工程,1992,(4):8-16.
[5]Sridhar S,Smitha B,Aminabhavi T M.Separation of carbon dioxide from natura gas mixtures through polymeric membranes[J].A Rev Sep Purif Rev,2007,36(2):113-174.
[6]Pandey P,Chauhan R S.Membranes for gas separation[J].Prog Polym Sci,2001,26(6):853-893.
[7]时均,袁权,高从堦.膜技术手册[M]//北京:化学工业出版社,2001,494-495.
[8]Strathmann H.Membrane separation processes:Current relevance and future opportunities[J].AIChE J,2001,47:1077-1087.
[9]段翠佳,曹义鸣,介兴明,等.金属有机骨架材料/聚酰亚胺混合基质膜的制备及气体分离性能[J].高等学校化学学报,2014,35(7):1584-1589.
[10]孙承贵,曹义鸣,介兴明,等.中空纤维致密膜基吸收CO2传质机理分析[J].高效化学工程学报,2007,21(4):556-562.
[11]季鹏飞,曹义鸣,介兴明,等.CO2分离中空纤维复合膜的制备及气体渗透性能的研究[J].石油化工,2010,39(9):1011-1015.
[12]McKee R L.CO2removal[J].Hydrocarbon Process,1991,(4):63.
[13]Babcock R E,Splliman R W.Natural gas cleanup[J].Energy Prog,1988,8(3):135.
[14]Bhide B D,Stern S A.Menbrane processes for the removal of acid gases from natural[J].J Membr Sci,1993,81:209.
[15]薛为岚,曾作祥,邓修.天然气净化膜及膜内气体传质机理研究[J].1999,13(5):408-414.
[16]叶向群,孙亮,张林,等.中空纤维膜基吸收法脱除空气中二氧化碳的研究[J].高校化学工程学报,2003,17(3):237-242.
[17]袁力,王志,王世昌.膜吸收技术及其在脱除酸性气体中的应用研究[J].膜科学与技术,2002,22(4):55-59.
[18]陈炜,朱宝库,王建黎,等.中空纤维膜接触器分离CO2/N2混合气体的研究)[J].膜科学与技术,2004,24(1):32-37.
[19]李合兴,曹义鸣,孙承贵,等.α-纤维素中空纤维致密膜组件吸收CO2传质过程的研究[J].石油化工,2007,36(4):345-348.
[20]王保国,吕宏凌,杨毅.膜分离技术在石油化工领域的应用进展[J].石油化工,2006,35(8):705-710.
[21]王明玺,王保国,赵洪,等.促进传递型支撑液膜分离有机溶剂的研究进展[J].石油化工,2004,33(2):178-185.