Fixed bed reactor

Abstract

The invention relates to a fixed bed reactor which is provided with a quartz reaction tube at the central of a right shell of a flange sealing face; one end of the quartz reaction tube to the flange sealing face is communicated with the inner chamber of the reactor and the other end extends outside the shell; the quartz reaction tube is externally sheathed with an electric heater unit; the center of a left shell of the flange sealing face is provided with an air through pipe; the right end of the air through pipe is butted with the left end of the quartz reaction tube and is communicated with the inner chamber of the reactor and the other end extends outside the shell; the shell of the fixed bed reactor is filled with high temperature material so that the temperature of the wall of a reaction high temperature conductive device is reduced below 50 DEG C; the quartz reaction tube is butted with the air through pipe at the flange sealing face so that the inside and outside pressure of the quartz tube is equal during high temperature reaction; the quartz tube is sheathed with the electric heater unit for directly heating reaction gas, thus greatly increasing heat transfer efficiency and saving power source. The fixed bed reactor is suitable for high temperature and high pressure reaction conditions of methane carbon dioxide reforming reaction, and has simple structure and convenient operation.

Description

technical field [0001] The invention relates to a fixed-bed reactor, in particular to a high-temperature and high-pressure fixed-bed reactor in which a heating device is arranged in the center of a shell composed of a flange-connected cylinder body and a head. Background technique [0002] Chemical production and research often involve high-temperature and high-pressure reaction process conditions. For example, methane carbon dioxide reforming reaction is a strong endothermic reaction, which needs to be carried out at high temperature (700-1100°C); research on methane carbon dioxide reforming under pressurized conditions When making synthesis gas, the reaction is usually carried out under the pressure as high as (6Mpa-10Mpa). Another example, the methanation of coal usually takes place at a temperature of 500-900°C and a pressure of 3-6Mpa. The harsh reaction conditions of this type of heat introduction (endothermic) reaction put forward high requirements on the structure an...

AI Technical Summary

Problems solved by technology

The existing problems are that the stainless steel material is not resistant to strong acid or strong alkali corrosion; the second is that the stainless steel reactor lining is made of anti-corrosion non-metallic materials, which reduces the heat transfer efficiency of the reactor; Can withstand higher pressure (10Mpa)

[0006] Due to the limitation of high temperature (700-1100°C) and high pressure (6-10Mpa), the existing reaction equipment cannot meet the temperature and pressure of heat introduction (endothermic) reactions such as methane carbon dioxide reforming reaction and coal methanation. requirements

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