Gas-liquid-solid three-phase membrane microreactor with stacked structure

Abstract

The invention discloses a gas-liquid-solid three-phase membrane microreactor with a stacked structure. The gas-liquid-solid three-phase membrane microreactor comprises an upper cover plate and a lowercover plate, wherein a liquid-phase inlet and a gas-phase inlet are formed in the upper cover plate, and the lower cover plate is provided with a liquid-phase outlet and a gas-phase outlet. The membrane microreactor is characterized in that a plurality of three-phase micro-reaction units are arranged between the upper cover plate and the lower cover plate in an up-down stacking manner; each three-phase micro-reaction unit is formed by stacking a liquid-phase micro-channel layer, a first gas-permeable membrane, a gas-phase micro-chamber layer and a second gas-permeable membrane in sequence from top to bottom; the first gas-permeable films and the second gas-permeable films have hydrophobicity and gas permeability; a liquid-phase reactant and a gas-phase reactant respectively enter from theliquid-phase inlet and the gas-phase inlet, sequentially flow through all the three-phase micro-reaction units from top to bottom, and respectively flow out from the liquid-phase outlet and the gas-phase outlet; the liquid-phase micro-channel layers are provided with vent holes and micro-channels for liquid-phase circulation; and the micro-channels are all of an up-down through structure. The gas-liquid-solid three-phase membrane microreactor can be widely applied to the fields of chemical engineering, energy, environmental protection and the like.

Description

technical field [0001] The invention relates to the field of microfluidic reactors, in particular to a gas-liquid-solid three-phase membrane microreactor with a stacked structure. Background technique [0002] Microreactor is a new type of reaction device, which has outstanding advantages such as large specific surface area, good safety performance, and high mass transfer efficiency, and is widely used in the chemical industry. For the most common gas-liquid-solid three-phase reaction in chemical reactions, relevant scholars have also developed various types of microreactors with different structures. The common ones are tubular microreactors, packed bed microreactors and membrane microreactors. Among them, the membrane microreactor has attracted much attention because the addition of a functional membrane structure can effectively increase the gas-liquid contact area, improve the mass transfer efficiency, and protect the solid catalytic layer. In recent years, Park et al....

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Problems solved by technology

However, these membrane microreactors for processing gas-liquid-solid three-phase reactions still have certain limitations, such as poor gas utilization rate, small processing capacity for reactants, inability to effectively scale up the production of the system, and secondly, the preparation process is complicated. , increase the economic cost, and it is impossible to solve the small size of the channel. Once the generated product cannot be discharged in time, the microreactor will be blocked.

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