Comparative study between fluidized bed and fixed bed reactors in methane reforming combined with methane combustion for the internal heat supply under pressurized condition
Comparative study between fluidized bed and fixed bed reactors in methane reforming combined with methane combustion for the internal heat supply under pressurized condition
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DOI：
10.1016/s0926-860x(01)00757-8
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发表时间：
2002-01
影响因子：
5.5
通讯作者：
K. Tomishige;Y. Matsuo;Y. Yoshinaga;Yasushi Sekine;M. Asadullah;K. Fujimoto
中科院分区：
文献类型：
--
作者：
K. Tomishige;Y. Matsuo;Y. Yoshinaga;Yasushi Sekine;M. Asadullah;K. Fujimoto
研究了加压条件下Ni和Pt催化剂流化对甲烷与CO2和H2O在O2存在下重整制合成气反应的影响。在1.0MPa下，流化床反应器中Ni 0.15Mg 0.85O催化剂上的甲烷和CO2转化率高于固定床反应器。这种反应器效应取决于催化剂的性质。在流化床和固定床反应器中的转化水平在MgO负载的Ni和Pt催化剂上几乎相同。这一现象与催化剂的还原性有关。在具有合适还原剂的催化剂上，氧化的催化剂可以用所产生的合成气还原，并且重整活性在流化床反应器中再生。在固定床反应器中，Ni_（0.15）Mg_（0.85）O的积炭严重，而在流化床反应器中，积炭得到抑制。
The effect of catalyst fluidization on the conversion of methane to syngas in methane reforming with CO2and H2O in the presence of O2under pressurized conditions was investigated over Ni and Pt catalysts. Methane and CO2conversion in the fluidized bed reactor was higher than those in the fixed bed reactor over Ni0.15Mg0.85O catalyst under 1.0MPa. This reactor effect was dependent on the catalyst properties. Conversion levels in the fluidized and fixed bed reactor were almost the same over MgO-supported Ni and Pt catalysts. It is suggested that this phenomenon is related to the catalyst reducibility. On a catalyst with suitable reducibility, the oxidized catalyst can be reduced with the produced syngas and the reforming activity regenerates in the fluidized bed reactor. Although serious carbon deposition was observed on Ni0.15Mg0.85O in the fixed bed reactor, it was inhibited in the fluidized bed reactor.