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High temperature methanation reactor

A methanation reactor and reactor technology, applied in chemical instruments and methods, organic chemistry, hydrocarbon production from carbon oxides, etc., can solve the problems of cracking, falling off, and inapplicability of heat-resistant linings, and avoid potential safety hazards. , long service life, reducing the effect of over-temperature inactivation

Inactive Publication Date: 2013-06-19
DATANG INT CHEM TECH RESINST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Therefore, the object of the present invention is to provide a novel methanation liner suitable for high-temperature methanation reactions aimed at the problems that the heat-resistant linings of methanation reactors in the prior art are prone to cracking, falling off and unsuitable for high-temperature methanation reactions. reactor

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Embodiment

[0031] This embodiment adopts as figure 2 The high temperature methanation reactor shown performs the methanation reaction.

[0032] 1. The specific composition of the high temperature methanation reactor is as follows:

[0033] The material of the reactor outer cylinder (3) is 15MnVNR, and the thickness is 10 millimeters;

[0034] The material of cylinder (4) in the reactor is 0Cr19Ni13Mo3, and thickness is 5 millimeters;

[0035] The thickness of the jacket layer (5) is 280 mm, and the filled high-temperature refractory material is aluminum silicate;

[0036] The configuration of the gas distributor (2) is a divergent type with inclined upward nozzles;

[0037] The thickness of catalyst bed (6) is 500 millimeters;

[0038] The first inert packing (7A) between the gas distributor (2) and the catalyst bed (6) is alumina balls with a thickness of 30 mm and a particle size of 8 mm; the second inert packing (7B) is alumina balls , with a thickness of 20 mm and a particle si...

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Abstract

The invention provides a high temperature methanation reactor, which comprises a reactor cylindrical body. The reactor cylindrical body includes a reactor external cylindrical body (3), a reactor internal cylindrical body (4) and a jacket layer (5) between the internal and external cylindrical bodies. The upper part of the reactor cylindrical body is provided with a reaction gas inlet (1) and a gas distributor (2), and the lower part is equipped with a gas collector (8) and a reaction gas outlet (9). The jacket layer (5) is filled with a high temperature refractory material. The reactor cylindrical body is loaded with a catalyst bed (6) inside. An inert filler (7) fills the space between the gas distributor (2) and the catalyst bed (6) and the space between the catalyst bed (6) and the gas collector (8). The reactor internal cylindrical body (4) of the reactor provided in the invention is a high temperature resistant stainless steel material, and is hard to crack and come off under a thermal shock, thus avoiding local clogging of the catalyst bed. The reactor is also provided with the gas distributor, the gas collector and the inert filler, so that a feed gas can pass the catalyst bed uniformly, and the product gas can leave the reactor uniformly.

Description

technical field [0001] The invention relates to a high-temperature methanation reactor, in particular to a high-temperature methanation reactor for synthesizing hydrogen, carbon monoxide and carbon dioxide instead of natural gas. Background technique [0002] The methanation reaction is a strongly exothermic process, and the main reaction formula is as follows: [0003] CO+3H 2 →CH 4 +H 2 O ΔH=-206KJ / mol [0004] CO 2 +4H 2 →CH 4 +2H 2 O ΔH=-165KJ / mol [0005] CO+H 2 O→CO 2 +H 2 ΔH=-41KJ / mol [0006] The methanation reaction is carried out by H 2 , CO, CO 2 、CH 4 、H 2 The synthesis gas composed of O and inert gas reacts under the action of methanation catalyst to form CH 4 . The methanation reaction is a strongly exothermic reaction with an extremely fast reaction rate, and reaches chemical equilibrium instantly at high temperature. [0007] The traditional methanation reactor generally adopts the structure of carbon steel outer cylinder lined with ...

Claims

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Application Information

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IPC IPC(8): B01J8/02C07C9/04C07C1/04
Inventor 李安学李春启左玉帮刘永健丁万友余铭程谢伦宏邱波周帅林李江涛
Owner DATANG INT CHEM TECH RESINST
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