Methanation reactor and methanation technology

Abstract

The invention discloses a methanation reactor and a methanation technology. The methanation reactor comprises a shell, a gas inlet tube, a cylinder, a gas outlet tube and a micro-reaction channels, and a catalytic active component can be loaded in the micro-reaction channels. Compared with methanation reactors in the prior art, the methanation reactor disclosed in the invention has the advantages of small use amount of a catalyst, low bed pressure drop, short gas retention time, high reaction bed space utilization rate, no gas flow deflection and no short circuit in the methanation reaction process.

Description

technical field [0001] The invention relates to a methanation reactor and a methanation process. Background technique [0002] The methanation reactor is one of the core equipment of the coal-to-natural gas project. The methanation reaction is a strongly exothermic reaction, and CO and CO 2 The competitive methanation reaction and the reverse water gas shift reaction at high temperature, efficient heat and mass transfer are the control of CO and CO 2 Key to competing methanation and high temperature reverse water gas shift. Studies have shown that for every 1% of CO converted or CO 2 The adiabatic temperature rise that can be produced reaches 70°C or 60°C, respectively. In order to control the temperature of the methanation reaction and recover a large amount of heat energy generated in the reaction, the industrial methanation process uses multiple fixed-bed methanation reactors connected in series to carry out the methanation reaction step by step. Companies that have ...

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Problems solved by technology

CN201320593757.7 discloses a microchannel reactor for methanation process, the microreaction channel is fixed on the support plate in the middle of the reactor, it is difficult to eliminate the stress caused by thermal expansion and contraction; CN201110030881.8 discloses a microchannel reactor Channel reactor and its synthesis gas complete methanation method, the microreactor is composed of several reaction channels and heat transfer channels arranged in parallel alternately, the pressure drop of the reactor is large, and it is difficult to withstand high pressure

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