KOH-NaOH复合熔融碱热裂解水稻秸秆制取富氢气体

摘要采用水稻秸秆为生物质原料，以氮气为保护气，以熔融碱为介质，在自行设计的热裂解反应器内进行快速热裂解制备富氢气体。考察了熔融NaOH、熔融KOH和不同比例的NaOH-KOH复合熔盐对水稻秸秆热裂解的产物分布、气体产物产率和组成含量的影响。结果表明：相比之下，熔融KOH更有利于提高水稻秸秆热裂解气体产物中氢气含量。在1.013×10⁵ Pa、450 ℃和100 L/h的反应条件下，熔融KOH裂解水稻秸秆获得的气体产物中φ(H2)达到87.4%，每1 g生物质H₂的产率达到0.7 L。

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	吴靥汝
	姜洪涛
	沈琦
	计建炳

关键词：熔融碱生物质热裂解富氢气体

Abstract： Pyrolysis of rice straw in molten alkali to produce hydrogen rich gas has been studied in a self designed reactor. The effects of molten NaOH, molten KOH and molten KOH-NaOH with different K/Na ratio, on products distribution, gas product yield and H₂ content in gas have been investigated. The results show that molten KOH is more favorable than molten NaOH to increase H₂ content in gas product. 87.4% H₂ content in gas product and H₂yield of 0.7 L/gbiomass have been reached for pyrolysis of rice straw in molten KOH under atmospheric pressure, 450 ℃ and 100 L/h of N2 flow rate.

Keywords： molten alkali biomass pyrolysis hydrogen rich gas

Received 2012-09-23;

Fund:

国家自然科学基金资助项目（20906084）。

Corresponding Authors: 姜洪涛，电话: (0571)88320598，E-mail: jht@zjut.edu.cn。 Email: jht@zjut.edu.cn

About author: 吴靥汝（1988-），女，硕士研究生，现从事生物质能源化工方面的研究。

引用本文:

吴靥汝, 姜洪涛, 沈琦, 计建炳.KOH-NaOH复合熔融碱热裂解水稻秸秆制取富氢气体[J]. 化学工业与工程, 2013,30(4): 1-5

WU Ye-Ru, JIANG Hong-Tao, SHEN Qi, JI Jian-Bing.Pyrolysis of Biomass in Molten KOH-NaOH to Hydrogen Rich Gas[J]. Chemcial Industry and Engineering, 2013,30(4): 1-5