Syngas production by biomass gasification using Rh/CeO2/SiO2 catalysts and fluidized bed reactor
Syngas production by biomass gasification using Rh/CeO2/SiO2 catalysts and fluidized bed reactor
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DOI：
10.1016/j.cattod.2004.01.002
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发表时间：
2004-06
期刊：
影响因子：
5.3
通讯作者：
K. Tomishige;M. Asadullah;K. Kunimori
中科院分区：
文献类型：
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作者：
K. Tomishige;M. Asadullah;K. Kunimori
我们已经开发出新型催化剂用于生物质气化，具有比传统方法（非催化剂，白云石，商业蒸汽重整Ni催化剂）高得多的能量效率。纤维素在新型Rh/CeO 2/SiO2催化剂上的气化结果表明，纤维素的气化过程包括焦油的重整和固体碳的燃烧两个过程。我们还测试了新的Rh/CeO 2/SiO2在气化与空气，热解气化，和水蒸气重整雪松木材。结果表明，Rh/CeO 2/SiO2催化剂的合成气产率高于传统的水蒸气转化Ni催化剂。此外，我们还比较了单床和双床反应器的性能。单床反应器对杉木的气化效果较好，但对稻草的气化效果不佳，反应器失活较快。还研究了利用双床流化床反应器和Rh/CeO 2/SiO2对稻草、黄竹棒、袋装酶进行气化的情况。特别是双流化床反应器的使用，明显提高了催化剂在稻草气化反应中的稳定性。
We have been developed novel catalysts for gasification of biomass with much higher energy efficiency than conventional methods (non-catalyst, dolomite, commercial steam reforming Ni catalyst). From the result of the gasification of cellulose over novel Rh/CeO2/SiO2catalysts, it is found that the gasification process consists of the reforming of tar and the combustion of solid carbon. We also tested novel Rh/CeO2/SiO2in the gasification with air, pyrogasification, and steam reforming of cedar wood. As a result, Rh/CeO2/SiO2gave higher yield of syngas than the conventional steam reforming Ni catalyst. Furthermore, we compared the performance between single and dual bed reactors. Single bed reactor was effective in the gasification of cedar, however, it was not suitable for the gasification of rice straw since a rapid deactivation was observed. Gasification of rice straw, jute stick, baggase using the fluidized dual-bed reactor and Rh/CeO2/SiO2was also investigated. Especially, the catalyst stability in the gasification of rice straw clearly was enhanced by using the fluidized dual bed reactor.