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A system and process for producing alternative natural gas

A technology to replace natural gas and products, applied in gas fuel, petroleum industry, fuel and other directions, can solve the problems of difficulty in eliminating stress, difficult to withstand high pressure, large pressure drop in the reactor, shortening processing time, reducing equipment investment, and reaction efficiency. high effect

Active Publication Date: 2019-10-08
SINOPEC ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN203540513U 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; Chinese patent CN102151531A 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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  • A system and process for producing alternative natural gas
  • A system and process for producing alternative natural gas
  • A system and process for producing alternative natural gas

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Embodiment 1

[0080] In this embodiment, the adiabatic microchannel reaction device, the first isothermal microchannel reaction device, the second isothermal microchannel reaction device and the third isothermal microchannel reaction device are respectively provided with a microchannel reactor, and the first isothermal microchannel reaction device is closed. A regulating valve between the channel reaction device and the third isothermal microchannel reaction device.

[0081] The microchannel reactor that the adiabatic microchannel reaction device adopts in the present embodiment is as figure 2As shown, it includes a radial cylindrical sealed pressure-bearing shell 1, an air inlet pipe 2 extending from the top of the shell 1 into the inside of the shell, an air outlet pipe 3 and a radial catalytic reaction zone. A first gas distributor 10 is provided at the lower part of the intake pipe 2 , and a second gas distributor 11 is provided below the first gas distributor 10 . Between the radial ...

Embodiment 2

[0089] The technological process that the present embodiment adopts is identical with embodiment 1, and difference is to open the regulating valve between the first isothermal microchannel reaction device and the 3rd isothermal microchannel reaction device, so that part of the reaction material directly flows from the first isothermal microchannel reaction device. The reaction device enters the third isothermal microchannel reaction device.

[0090] The difference between the microchannel reactor adopted by the adiabatic microchannel reaction device in this embodiment and the reactor of embodiment 1 is that, in this embodiment, two sleeves are arranged outside the central cylinder, such as Figure 6 , Figure 7 As shown, a flow collector is formed between the two sleeves and between the inner sleeve and the central cylinder, and the number of tapered tube radial micro-reaction channels 13 in the entire radial catalytic reaction zone is 63,000 (for clarity, not all shown). Th...

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Abstract

The invention discloses a system for producing substitute natural gas and a process. The system comprises a heat-insulated microchannel reaction device, a first isothermal microchannel reaction device, a second isothermal microchannel reaction device, a third isothermal microchannel reaction device, a first heat recovery device, a second heat recovery device, a first gas-liquid separation device and a second gas-liquid separation device. Compared with the prior art, the system and the process, disclosed by the invention, have the advantages that the problem that a reactor is high in pressure drop loss can be solved, a catalyst bed layer is prevented from channeling and short-circuiting phenomena, and the service life of the reactor is prolonged.

Description

technical field [0001] The present invention relates to a system and process for producing alternative natural gas. Background technique [0002] my country's energy structure is rich in coal, poor in oil, and low in gas. The current domestic natural gas production is far from meeting the needs of the rapid development of the national economy. The development of coal to replace natural gas is not only a clean and efficient use of coal resources, but also a strategic supplement to the shortage of conventional natural gas in my country. It plays a vital role in optimizing the industrial structure and ensuring the normal operation of the national economy. [0003] Coal-to-natural gas is mainly through coal gasification, transformation, acid gas removal, methanation and other processes to finally obtain methane products that meet the quality requirements. The methanation reaction is CO, CO 2 with H 2 Under the action of methanation catalyst, CH 4 and H 2 The reaction of O i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L3/08
Inventor 张旭戴文松蒋荣兴
Owner SINOPEC ENG
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