Direct heat exchange type methane catalytic combustion-reforming coupling device and method
A methane catalytic combustion and coupling device technology, which is applied in chemical instruments and methods, inorganic chemistry, bulk chemical production, etc., to achieve high heat exchange efficiency, efficient energy utilization, and low heat loss.
Pending Publication Date: 2020-08-18
CHONGQING UNIV
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[0005] The purpose of the present invention is to solve the problem of how to use methane catalytic combustion to continuously, efficiently and stably provide heat for the methane reforming process, realize high efficiency, safety, environmental protection and stabilization of equipment, and then provide a direct heat exchange Methane catalytic combustion-reforming coupling device and method thereof
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[0040] Combustion gas CH 4 and air through two gas pipelines with regulating valves 2 into the combustion gas mixing chamber 9 to fully mix and then flow into the preheater 4 under the action of the combustion gas pump 3. In the preheater 4, the combustion flue gas and the external The heat source is preheated, and after reaching a certain temperature, it is passed into the combustion reaction chamber 15 of the coupling reactor 5 through twelve combustion gas inlets corresponding to the four combustion reaction chambers 15, so that the gas enters each combustion reaction chamber 15 more evenly. In reaction chamber 15. The bottom and top of each combustion reaction chamber 15 are filled with spherical perovskite catalysts 14 for methane catalytic combustion, and the catalyst in the combustion reaction chamber 15 adopts Figure 7 and Figure 8 The section arrangement shown. CH is controlled by regulating valve 2 on the intake line 4 The amount of intake air and air keeps the...
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The invention discloses a direct heat exchange type methane catalytic combustion-reforming coupling device and a method thereof. The device comprises heat conduction plates, which are generally in a square shape, are arranged at intervals, and divide a whole structure into four methane combustion areas and three methane reforming areas. The methane reforming areas adopt Ni-based catalysts, which are continuously arranged. The combustion areas adopt perovskite catalysts, which are arranged in a segmented manner. Methane and air are introduced into a combustion gas mixing chamber through the twogas pipelines with regulating valves so as to control the combustion temperature. Methane, carbon dioxide and water vapor are introduced into a reforming gas mixing chamber through three gas pipelines with regulating valves to control the proportion of generated syngas. Combustion gas and reforming gas are mixed and preheated and then are introduced into a combustion reaction chamber and a reforming reaction chamber from the two ends of a coupling reactor respectively, heat exchange is conducted in a countercurrent flow mode, and heat released by methane combustion is directly used for promoting the reforming reaction. The device and method have the advantages of small heat dissipation loss, high stability, high heat exchange efficiency, adjustable syngas proportion, and the like.
Description
technical field [0001] The invention relates to the technical fields of methane catalytic combustion, methane reforming, endothermic and exothermic coupling reaction, etc., and specifically relates to a direct heat exchange methane catalytic combustion-reforming coupling device and a method thereof. Background technique [0002] Energy plays an important role in our society and is an important factor in economic and industrial development. However, in recent years, the environmental problems caused by the use of energy have become more and more serious, which has attracted the attention of all countries in the world, and the problem of the greenhouse effect is the most important. In traditional fossil energy coal, oil, and natural gas, the main component of natural gas is CH 4 , its calorific value is high, and its carbon emission is small under the same calorific value, which is conducive to slowing down the greenhouse effect. In addition, thanks to the massive exploitati...
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IPC IPC(8): C01B3/38
CPCC01B3/38C01B2203/0233C01B2203/0238C01B2203/1058C01B2203/1241C01B2203/0816C01B2203/0894Y02P20/52Y02P20/129
Inventor 牛俊天卜新原唐雷冉景煜杨仲卿蒲舸
Owner CHONGQING UNIV