Microreactor with replaceable bed layer and application of microreactor

Abstract

The invention provides a microreactor with a replaceable bed layer and application of the microreactor. The microreactor comprises an upper cover plate, a lower cover plate and a microreactor substrate layer clamped between the upper cover plate and the lower cover plate; a raw material gas preheating channel, a raw material gas distribution structure, a cavity structure for accommodating a catalyst bed layer and a tail gas collecting structure which are sequentially connected are arranged in the microreactor substrate layer; a gas inlet and a gas outlet are formed in the upper cover plate; the gas inlet is communicated with a gas inlet of the raw material gas preheating channel; the gas outlet is communicated with a gas outlet of the tail gas collecting structure. According to the microreactor provided by the invention, by adopting a design method of separating the catalyst bed layer at a reaction site from the microreactor substrate layer, the replacement cost of a catalyst can be reduced; the microreactor is suitable for a mode of combining multiple catalysts; the reaction intensifying process is effectively realized, the reaction conversion rate is improved, and industrial application of the microreactor is facilitated.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, and relates to a micro-reactor with a replaceable bed layer and its application. Background technique [0002] Fischer-Tropsch synthesis reaction is one of the most important synthesis reaction systems in the field of coal chemical industry. The reaction system uses synthesis gas as a raw material, and can produce various important industrial raw materials such as alkanes, olefins, and alcohols. Since syngas can be produced from coal, the Fischer-Tropsch reaction has important strategic significance for countries with more coal and less oil. [0003] Currently, Fischer-Tropsch synthesis reactions mainly include fixed bed, fluidized bed, and microchannel reactors. The fixed-bed reactor is simple in construction, low in cost and easy to operate, but has disadvantages such as heat transfer, poor mixing effect, and inability to replace the catalyst on-line. Compared with the fixed bed r...

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Problems solved by technology

[0005] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of microreactor and application thereof that can replace the bed, be used to solve the poor heat transfer performance of the reactor adopting fixed bed mode in the prior art, catalyst It is troublesome to load and replace the catalyst; for microreactors using the coating method, the replacement and unloading process of the catalyst is difficult, the operation is difficult, and the bed cannot be reused, etc.

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