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A kind of methanation reactor and methanation process

A methanation reactor and reactor technology, applied in chemical instruments and methods, organic chemistry, petroleum industry, etc., can solve problems such as difficult to withstand high pressure, difficult to eliminate thermal expansion and contraction stress, large pressure drop of reactor, etc., to achieve The effect of short residence time, shortening processing time and prolonging service life

Active Publication Date: 2019-02-22
SINOPEC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • A kind of methanation reactor and methanation process
  • A kind of methanation reactor and methanation process
  • A kind of methanation reactor and methanation process

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Embodiment approach

[0065] According to a specific implementation manner of the first aspect of the present invention, the cooling medium inlet and the cooling medium outlet can be in fluid communication through a line tube arranged in the central pipe 6 and wound by a cooling medium pipeline . The cooling medium inlet and the cooling medium outlet may also be in fluid communication through a cooling medium pipeline arranged in the manifold 7 and surrounding the central cylinder 4 and / or the sleeve 5 . It should be noted that the same pair of cooling medium inlets and cooling medium outlets may be in fluid communication through multiple cooling medium pipelines.

[0066] According to the first aspect of the present invention, in order to enable the methanation reactor to produce methane, the inner surface of the micro-reaction channel 10 can be loaded with catalytically active components. Described catalytic active component can adopt the catalytic active component well known to those skilled in...

Embodiment 1

[0080] Such as image 3 As shown, the reaction device of this embodiment consists of 1# main methanation reactor 16, 2# main methanation reactor 17, 1# supplementary methanation reactor 18, 2# supplementary methanation reactor 19, steam superheater 21 , Boiler feed water heater 22, 2# cooler 23, 1# cooler 24, product separator 25 and steam drum 20 are connected. The two main methanation reactors are connected in parallel and share a steam drum 20 with the two supplementary methanation reactors.

[0081] The operation steps are as follows:

[0082] a. H 2 The / CO volume ratio is 3.0 (M=3.0), the pressure is 3.5MPa, the synthesis gas temperature is 250°C, and the total volume flow rate is 10m 3 / h, divided into two streams to enter the main methanation reactor, one stream enters the 1# main methanation reactor 16 for the main methanation reaction, and the other synthesis gas enters the 2# main methanation reactor 17 for the main methanation reaction, The micro-reaction chann...

Embodiment 2

[0093] Such as Figure 6 As shown, the reaction device of this embodiment consists of 1# main methanation reactor 16, 2# main methanation reactor 17, 1# supplementary methanation reactor 18, steam superheater 21, boiler feed water heater 22, 2# Cooler 23, 1# cooler 24, product separator 25 and steam drum 20 are connected. The two main methanation reactors are connected in parallel and share a steam drum 20 with the supplementary methanation reactor.

[0094] The operation steps are as follows:

[0095] a. The pressure is 3.0MPa, the temperature is 250°C, and the synthesis gas containing carbon monoxide, carbon dioxide and hydrogen with M=2.95 has a total volume flow rate of 10m 3 / h, divided into two streams to enter the main methanation reactor, one stream enters the 1# main methanation reactor 16 for the main methanation reaction, and the other synthesis gas enters the 2# main methanation reactor 17 for the main methanation reaction, The micro-reaction channels of the two...

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Abstract

The invention discloses a methanation reactor and a methanation process; the methanation reactor comprises a shell body, a gas inlet pipe, a central cylinder, a central pipe, a gas outlet pipe, a cooling medium inlet, a cooling medium outlet and a micro reaction channel, and includes or does not include a sleeve; the micro reaction channel can be internally loaded with a catalytic active component. Compared with the prior art, the methanation reactor has less catalyst use amount; according to the methanation process adopting the methanation reactor, the bed pressure is reduced, the gas residence time is short, the space utilization rate of a reaction bed is high, and gas bias current and short-circuit phenomena do not exist.

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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/02C10L3/08C07C9/04C07C1/04
Inventor 张旭戴文松王子宗蒋荣兴
Owner SINOPEC ENG
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