Isothermal methanation reaction system and process

An isothermal reactor and methanation technology, applied in the chemical industry, can solve the problems of a large number of equipment, low methanation efficiency, and large circulation volume, and achieve the effects of large circulation volume, improved reaction efficiency, and simple regulation and control.

Inactive Publication Date: 2020-06-30
HUNAN ANCHUN ADVANCED TECH
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Problems solved by technology

[0011] Based on this, it is necessary to provide an isothermal methanation reaction system with simple equipment, low circulation and high methanation efficiency in view of the problems of low methanation efficiency due to the large number of equipment and large circulation volume in the existing methanation reaction process and craft

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  • Isothermal methanation reaction system and process
  • Isothermal methanation reaction system and process
  • Isothermal methanation reaction system and process

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Embodiment Construction

[0044] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided for the purpose of making the disclosure of the present invention more thorough and comprehensive.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associat...

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Abstract

The invention relates to an isothermal methanation reaction system and process. The isothermal methanation reaction process comprises the following steps: enabling synthesis gas to enter an isothermalreactor to react to obtain reaction gas; cooling the reaction gas through a steam superheater, and/or performing heat exchange cooling on the reaction gas and the synthesis gas through a gas inlet heat exchanger to obtain first cooled reaction gas; cooling the first cooled reaction gas through a low-pressure waste heat boiler to obtain second cooled reaction gas; and enabling the second cooled reaction gas to pass through a first water separator to obtain methane gas. The invention discloses the isothermal methanation reaction system and the process. Compared with the existing methanation reaction system and process adopting a gas circulation method, the isothermal methanation reaction system and the process have the advantages of less equipment, short flow, simplicity in regulation and control and high reaction heat utilization rate, and compared with the existing methanation reaction process, the process are a one-time non-circulation reaction process and has no problem of large circulation volume, so that the production efficiency of methanation is high.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an isothermal methanation reaction system and process. Background technique [0002] The methanation reaction of syngas is a strong exothermic reaction between CO and H2, CO2 and H2 under the conditions of certain temperature, pressure and presence of catalyst. [0003] The basic reaction equation of methanation is: [0004] 3H2+CO=CH4+H2O+206.4KJ [0005] CO2+4H2=CH4+2H2O+164.9KJ [0006] The side reaction equation is: [0007] 2CO=CO2+C carbon precipitation reaction [0008] Ni+4CO=Ni(CO)4 carbonylation reaction [0009] The reaction heat of methanation is twice that of methanol synthesis, and the temperature rise of 1% CO to generate CH4 is 72°C. Therefore, the reaction temperature must be controlled to prevent the catalyst from deactivating or even burning out due to overheating. [0010] In the existing methanation reaction process, the gas circulation metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/08
CPCC10L3/08
Inventor 谢定中钟序光戴丰育
Owner HUNAN ANCHUN ADVANCED TECH
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