褐煤超临界水气化制H2的实验研究
Experimental study on the hydrogen production by gasification of lignite in supercritical water
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摘要: 以褐煤为原料,采用间歇式高温高压反应釜,考察不同反应温度、反应压力和水煤质量比对褐煤超临界水气化制H2产率的影响,再对加入不同质量分数的Fe粉、Ni粉对制H2的催化效果进行研究.结果表明,反应温度的提高可以在很大程度上提高H2的产率,适宜的反应温度为405℃;反应压力对制H2的影响效果不明显,但较高的反应压力会略提高CH4的产率,适宜的反应压力为23 MPa;较高的水煤质量比有利于产生H2,但成本也会随之提高,适宜的水煤质量比为10:1;金属催化剂Fe粉和Ni粉的加入可明显提高H2的产率,当质量分数较低时,Ni粉的催化效果优于Fe粉,当质量分数较高时,Fe粉的催化效果更好.Abstract: The effect of different reaction temperature, reaction pressure and the ratio of water to lignite on the H2 production by gasification of lignite in supercritical water was investigated by using lignite as raw material and intermittent high temperature and high pressure reactor. Then, the catalytic effect of Fe powder and Ni powder with different mass fractions on the production of H2 was studied separately. The experimental results showed that the increase of reaction temperature could greatly improve the yield of H2. The suitable reaction temperature was 405℃. The effect of reaction pressure on H2 production was not obvious, but the higher reaction pressure would slightly increase the yield of CH4, the appropriate reaction pressure was chosen as 23 MPa; higher ratio of water to lignite was conducive to the production of H2, but the cost would also increase, the appropriate ratio of water to lignite was selected as 10:1; the addition of metal catalyst Fe powder and Ni powder could significantly improve the yield of H2. When the mass fraction was low, the catalytic effect of Ni powder was better than that of Fe powder. When the mass fraction was higher, the catalytic effect of Fe powder was better.
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Key words:
- lignite /
- supercritical water /
- gasification /
- hydrogen yield /
- catalytic effect
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[1]
郑少华,李明通,冉孟胶,等.超临界水对褐煤、长焰煤气化的实验研究[J].华北科技学院学报,2013,10(3):20.
-
[2]
王奕雪,陈秋玲,谷俊杰,等.生物质超临界水气化制氢催化剂研究进展[J].化学研究与应用,2013,25(1):7.
-
[3]
姜炜,程乐明,张荣,等.连续式超临界水反应器中褐煤制氢过程影响因素的研究[J].燃料化学学报,2008,36(6):660.
-
[4]
孙冰洁,杜新,张荣,等.KOH对超临界水中褐煤连续制氢的影响[J].燃料化学学报,2010,38(5):518.
-
[5]
闫秋会,郭烈锦,梁兴,等.连续式超临界水中煤/CMC催化气化制氢实验研究[J].太阳能学报,2005,26(6):874.
-
[6]
李永亮,郭烈锦,张明颛,等.高含量煤在超临界水中气化制氢的实验研究[J].西安交通大学学报,2008,42(7):919.
-
[7]
曹雅琴,李金来,谷俊杰,等.烟煤在超临界水中催化气化的研究[J].煤炭转化,2011,34(2):17.
-
[8]
WANG J,TAKARADA T.Role of calcium hydroxide in supercritical water gasification of low-rank coal[J].Energy & Fuel,2001,15(2):356.
-
[9]
LIN S Y,HARADAA M,SUZUKIBY,et al.Hydrogen production from coal by separating carbon dioxide during gasification[J].Fuel,2002,81(16):2079.
-
[10]
夏凤高.褐煤超临界水催化气化制甲烷[D].昆明:昆明理工大学,2013.
-
[11]
刘勰.超临界水中生物质和煤气化制氢性能的研究[D].西安:西安建筑科技大学,2013.
-
[12]
翁晓霞.超临界水中煤热解及催化气化机理研究[D].天津:天津大学,2013.
-
[13]
罗威,廖传华,陈海军,等.适宜操作条件提高松木屑超临界水气化制氢效果[J].农业工程学报,2015,31(24):256.
-
[14]
刘理力,廖传华,陈海军,等.松木屑超临界水气化制甲烷产气性能试验[J].林业工程学报,2016,1(4):96.
-
[15]
罗威.松木屑超临界水气化制氢实验研究[D].南京:南京工业大学,2016.
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