Multiscale reaction carrier with porous microchannel structure and its preparation method

Abstract

The invention discloses a multi-scale reaction carrier with a porous micro-channel structure and a preparation method of the multi-scale reaction carrier. A rectangular plate is used as a reaction carrier, a plurality of rows of micro-channels which are uniformly distributed at intervals in parallel are formed in the rectangular plate, the section of each micro-channel is of an inverted trapezoid shape, micro-pores which are uniformly distributed are formed in three surfaces in the micro-channels, the inside of each micro-pore is an uneven surface, and each micro-pore, each micro-channel and the reaction carrier forms a microcosmic-mesoscopic-macroscopic multi-scale reaction carrier; the multi-scale reaction carrier with the porous channel structure is obtained by sequentially grinding, spreading, cold-pressing, hot-pressing, salt dissolving and processing by adopting a surface sintering and dissolving method. According to multi-scale reaction carrier, one-time forming and manufacturing of a multi-scale composite structure can be realized, the specific area of a micro-reactor and the attachment area of the catalyst are effectively improved, and the attachment of the catalyst and the effective performing of the reaction are facilitated. The preparation method is simple and is low in cost, and can be applied to reactions of hydrogen production by steam reforming of methanol, and the like; the reaction efficiency is effectively improved, and the volume and the weight of a reactor are reduced.

Description

technical field [0001] The invention relates to a reaction carrier and a preparation method thereof, in particular to a multi-scale reaction carrier with a porous microchannel structure and a preparation method thereof. Background technique [0002] With the development of social economy and the increase of population, energy is being consumed at a faster and faster rate. At present, the research and development of new energy has become a worldwide problem and hot spot. As a clean and efficient energy utilization technology in the 21st century, hydrogen energy and fuel cells have become one of the global research hotspots. Hydrogen energy is an extremely superior new energy source. Its main advantages are: high combustion calorific value, non-polluting combustion products, and abundant hydrogen production resources. Hydrogen fuel cells have been vigorously developed due to their advantages of high energy efficiency, convenience and reliability; at present, pure hydrogen tra...

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Problems solved by technology

The thermal conductivity of the reaction carrier produced by this method is not good, which is not conducive to the lamination and expansion of the reaction carrier

[0007] Chinese invention patent (application number 201310554712.3) discloses a self-heating staggered micro-boss array type alcohol reformer, including a reforming hydrogen production plate and a catalytic combustion plate, for alcohol combustion and water vapor reforming hydrogen production reaction, to achieve self-heating operation, but the surface-loaded catalyst is easy to fall off, resulting in a decrease in the reaction rate and a decrease in the conversion rate of alcohols

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