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膜接触器从混合气中脱氨性能的研究

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王建黎, 徐又一, 徐志康, 徐红. 膜接触器从混合气中脱氨性能的研究[J]. 环境化学, 2001, 20(6): 588-594.
引用本文: 王建黎, 徐又一, 徐志康, 徐红. 膜接触器从混合气中脱氨性能的研究[J]. 环境化学, 2001, 20(6): 588-594.
shu
Wang Jianli, Xu Youyik, Xu Zhikang, Xu Hong. HOLLOW FIBER MEMBRANE CONTACTOR AND ITSPERFORMANCES FOR AMMONIA ABSORB[J]. Environmental Chemistry, 2001, 20(6): 588-594.
Citation: Wang Jianli, Xu Youyik, Xu Zhikang, Xu Hong. HOLLOW FIBER MEMBRANE CONTACTOR AND ITSPERFORMANCES FOR AMMONIA ABSORB[J]. Environmental Chemistry, 2001, 20(6): 588-594.
shu

膜接触器从混合气中脱氨性能的研究

  • 基金项目:

    国家自然科学基金资助项日(No．59833120)

HOLLOW FIBER MEMBRANE CONTACTOR AND ITSPERFORMANCES FOR AMMONIA ABSORB

  • 1.

    Institute of Polymer Science, Zhejiang University, Hangzhou, 3l0027

  • Fund Project:

  • 摘要: 采用中空纤维膜接触器进行了从模拟“铜洗再生气”中脱氨的研究,探讨了影响脱除效率的主要因素。试验表明：膜吸收法对混合气中的氨有很好的脱除效果,当混合气中氨的浓度为20.0g·Nm-3,膜组件的处理能力为5.1Nm3·m-2·h-1时,脱氨率大于99.9%,即脱氨后氨的浓度低于0.02g·Nm-3.当组件内吸收液供应充足时,分离过程的传质阻力主要在膜和气体一侧。研究发现,当用挥发性水溶液(盐酸)作为吸收剂时,由于NH4Cl晶体的桥联作用导致疏水性微孔膜亲水化。
    Abstract: The contactors assembled with self-made polypropylene hollow fiber membrane and distribution tube were designed for gas separation. The factors, effect on the ammonia removal rate from simu-lated "copper-washing" regenerated gas were studied. The factor that influenced mass transfer was acid updated rate on the membrane surface. The elimination rate of ammonia is higher than 99% as acid supply around the membrane fibers is sufficient. Pilot test showed that the contactor could be utilized for eliminating ammonia from "copper-washing" regenrated gas in synthetic ammonia factor effciently. When hydrochloric acid solution was used as absorbent, in micro-pores, gaseous HCl and gaseous NH3 would react to form NH4Cl crystal, which caused the hydrophobic membrane to hydrophilication.
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  • [1] 徐又一等,浙江大学高分子科学研究所,中国专利ZL 90100317.4
    [2] Zhang Qi,Culssler E L,Microporous Hollow Fibers for Gas Absorption.Ⅰ.Mass Transfer in the Liquid.Ⅱ.Mass Transfer Across the Membrane.J.Membrane.Sci.,1985,23:321-345
    [3] Imai M,Furusaki S,Miyauchi T,Separation of Volatile Amterials by Gas Membranes.Ind.Eng.Chem.Proc.,1982,21:421
    [4] Semmens M J,Foster D M,Cussler E L,Ammonia Removal from Water Using Microporous Hollow Fiber Membrane.1990,51:127-140
    [5] 于伯杉,中空纤维支撑气态膜及在水溶液中分离挥发性物质的应用.膜科学与技术,1988,8(1):43-49
    [6] 徐又一,徐红,王建黎等,聚丙烯中空纤维膜的结构及其氨/水、氨/气分离性能的研究.第三届全国膜和膜过程学术报告会,1999,146-151
    [7] 金美芳,曹义铭,刑丹敏等,膜吸收法脱除二氧化硫.膜科学与技术,1999,19(3):44-46
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  • 收稿日期:  2000-12-30
王建黎, 徐又一, 徐志康, 徐红. 膜接触器从混合气中脱氨性能的研究[J]. 环境化学, 2001, 20(6): 588-594.
引用本文: 王建黎, 徐又一, 徐志康, 徐红. 膜接触器从混合气中脱氨性能的研究[J]. 环境化学, 2001, 20(6): 588-594.
shu
Wang Jianli, Xu Youyik, Xu Zhikang, Xu Hong. HOLLOW FIBER MEMBRANE CONTACTOR AND ITSPERFORMANCES FOR AMMONIA ABSORB[J]. Environmental Chemistry, 2001, 20(6): 588-594.
Citation: Wang Jianli, Xu Youyik, Xu Zhikang, Xu Hong. HOLLOW FIBER MEMBRANE CONTACTOR AND ITSPERFORMANCES FOR AMMONIA ABSORB[J]. Environmental Chemistry, 2001, 20(6): 588-594.
shu

膜接触器从混合气中脱氨性能的研究

  • 收稿日期:  2000-12-30
基金项目:

国家自然科学基金资助项日(No．59833120)

摘要: 采用中空纤维膜接触器进行了从模拟“铜洗再生气”中脱氨的研究,探讨了影响脱除效率的主要因素。试验表明：膜吸收法对混合气中的氨有很好的脱除效果,当混合气中氨的浓度为20.0g·Nm-3,膜组件的处理能力为5.1Nm3·m-2·h-1时,脱氨率大于99.9%,即脱氨后氨的浓度低于0.02g·Nm-3.当组件内吸收液供应充足时,分离过程的传质阻力主要在膜和气体一侧。研究发现,当用挥发性水溶液(盐酸)作为吸收剂时,由于NH4Cl晶体的桥联作用导致疏水性微孔膜亲水化。

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