Hydrogen-rich gas from catalytic steam gasification of eucalyptus using nickel-loaded Thai brown coal char catalyst
Hydrogen-rich gas from catalytic steam gasification of eucalyptus using nickel-loaded Thai brown coal char catalyst
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DOI：
10.1016/j.ijhydene.2013.12.155
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发表时间：
2014-03
影响因子：
7.2
通讯作者：
Cheewasu Phuhiran;T. Takarada;Suparin Chaiklangmuang
中科院分区：
文献类型：
--
作者：
Cheewasu Phuhiran;T. Takarada;Suparin Chaiklangmuang
以桉树为原料，在常压两段固定床中进行了催化水蒸气气化制氢试验。气化器在500-650 °C的温度范围和16、30和45 kPa的蒸汽分压下操作;负载镍的泰国褐煤焦用作催化剂。气化产物的产率和组成取决于操作条件，特别是反应温度和水蒸气。H2的产率随温度的升高而增加，从26.94%增加到46.68%，而CO的产率急剧下降，从70.21mol%下降到37.71mol%。当气化终温为650 °C时，H2产率最高，为46.68%。桉树催化水蒸气气化实验表明，在气化温度为650 °C、水蒸气分压为30 kPa时，H2/CO最大值为1.24。结果表明，以镍基褐煤半焦为催化剂，桉树挥发分水蒸气催化气化制合成气是适宜的。
Hydrogen gas production from eucalyptus by catalytic steam gasification was carried out in an atmospheric pressure of two-stage fixed bed. The gasifier was operated with the temperature range of 500–650 °C and steam partial pressure of 16, 30 and 45 kPa; nickel-loaded Thai brown coal char was used as a catalyst. The yields and compositions of the gasification products depend on the operating conditions, especially, the reaction temperature and the steam. The yield of H2increased at elevated temperatures, from 26.94 to 46.68%, while that of CO dramatically decreased, from 70.21 to 37.71 mol%. The highest H2yield, 46.68%, was obtained at the final gasifying temperature of 650 °C. Eucalyptus catalytic steam gasification indicated that the maximum H2/CO ratio reached 1.24 at the gasification temperature of 650 °C and the steam partial pressure of 30 kPa. It can be concluded that eucalyptus is appropriate for synthesis gas production from eucalyptus volatiles by catalytic steam gasification while using nickel-loaded brown coal char as a catalyst.