Syngas production by partial oxidation of methane in a microchannel reactor over a Ni–Pt/La0.2Zr0.4Ce0.4Ox catalyst
Syngas production by partial oxidation of methane in a microchannel reactor over a Ni–Pt/La0.2Zr0.4Ce0.4Ox catalyst
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DOI：
10.1016/j.fuproc.2014.10.031
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发表时间：
2015-03
影响因子：
7.5
通讯作者：
L. Makarshin;V. Sadykov;D. Andreev;A. Gribovskii;V. Privezentsev;V. Parmon
中科院分区：
文献类型：
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作者：
L. Makarshin;V. Sadykov;D. Andreev;A. Gribovskii;V. Privezentsev;V. Parmon
研究了甲烷部分氧化过程中微通道反应器的操作。开发了在热循环（高达900 °C）条件下工作的Fecralloy微通道板上沉积耐用（Ni-Pt）/LaCeZrO催化剂的方法。结果表明，温度分布沿着微通道板的长度是不平坦的。部分甲烷在微通道板前缘燃烧生成H2O和CO2，同时伴随着大量的放热。在微通道板的其余部分，发生甲烷蒸汽和干重整的吸热反应，产生CO和CO2。结果，微通道板的前缘（长度达2 mm）经受严重的热腐蚀。具有一个微通道板的微通道反应器的测试运行证明了在820，000 h-1的气体空速下82%的甲烷转化率和60%的一氧化碳选择性。MC反应器的缩放与MC板的数量成比例地增加氢气产量。与MC板所占体积相关的比产氢量约为123 L/（h·cm 3）。
Operation of a microchannel reactor during the partial oxidation of methane has been studied. Methods for the deposition of a durable (Ni–Pt)/LaCeZrO catalyst on the Fecralloy microchannel plates working under thermocycling (up to 900 °C) conditions up were developed. It was shown that the temperature profile along the microchannel plate length is not flat. A part of methane is combusted into H2O and CO2at the front edge of the microchannel plate, which is accompanied by a big heat release. On the rest part of the microchannel plate, endothermic reactions of methane steam and dry reforming occur yielding CO and Н2. As a result, the front edge of the microchannel plate (up to 2 mm in length) undergoes a heavy thermal corrosion. Test runs of the microchannel reactor with one microchannel plate demonstrated 82% methane conversion and 60% selectivity toward carbon monoxide at gas space velocity of 820,000 h− 1. Scaling of the MC reactor increased hydrogen production proportionally to the number of the MC plates. The specific hydrogen production related to the volume occupied by the MC plates is about 123 L/(h·cm3).