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Gas-liquid and gas-liquid-solid multiphase micro-channel reactor and reaction system

A technology of channel reactor and channel reaction, which is applied in chemical/physical/physical chemical reactors, chemical instruments and methods, chemical/physical/physical chemical processes, etc., and can solve the problem of reducing and prolonging the interference phenomenon of gas phase and liquid phase flow velocity Problems such as the residence time of the liquid phase reaction and the inability to fully contact the gas phase, etc., to achieve the effect of increasing the contact area of ​​the two phases, compact structure, and low cost

Inactive Publication Date: 2021-01-12
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a gas-liquid and gas-liquid-solid multiphase microchannel reactor and reaction system, aiming at traditional gas-liquid and gas-liquid-solid microchannel reactors, due to the relatively large gas-liquid flow Q g / Q l When the flow direction of the gas phase and the liquid phase are the same, the larger gas phase flow rate causes the problem that the liquid phase cannot stay in the microreactor for a sufficient time and cannot fully contact the gas phase for reaction. By changing the direction of the gas-liquid flow The method greatly reduces the flow rate interference phenomenon between the gas phase and the liquid phase in the microreactor, can effectively prolong the residence time of the liquid phase reaction, and can fully contact the gas-liquid two-phase, and can be applied to the gas-liquid two-phase reaction or gas-liquid-solid three phase reaction

Method used

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  • Gas-liquid and gas-liquid-solid multiphase micro-channel reactor and reaction system
  • Gas-liquid and gas-liquid-solid multiphase micro-channel reactor and reaction system
  • Gas-liquid and gas-liquid-solid multiphase micro-channel reactor and reaction system

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Embodiment 1

[0045] Such asfigure 1 , a gas-liquid and gas-liquid-solid multiphase microchannel E-reactor in this embodiment, the entire reactor is placed horizontally, and stacked in sequence from bottom to top with an air inlet chamber 1, a reaction chamber 3, a liquid-blocking gas-permeable membrane 4, and a baffle 5 And the gas outlet chamber 6, a sealing ring 2 is provided between the inlet chamber 1 and the reaction chamber 3, and between the reaction chamber 3 and the gas outlet chamber 6, for sealing the connecting surfaces of the various components of the reactor.

[0046] The gas inlet chamber 1 is used to introduce reaction gas; as image 3 , the air inlet chamber 1 is provided with a first air storage chamber C, the first air storage chamber C is provided with a first air inlet B, and the first air storage chamber C is arranged below the microchannel E.

[0047] Such as Figure 4 , the reaction chamber 3 is provided with a liquid inlet A and a liquid outlet F, and a microchann...

Embodiment 2

[0058] A gas-liquid and gas-liquid-solid multiphase microchannel E reaction system of this embodiment uses the reactor of Embodiment 1 to prolong the residence time of the liquid phase reaction and fully contact the gas-liquid two phases. The system of this embodiment includes a liquid-phase feeding device, a gas source, a flow controller, a pressure detection device, a reactor, a tail gas recovery and treatment device, post-processing equipment, and a heating and temperature control device that can be provided for reaction at a certain temperature. device.

[0059] The gas is transported by the gas source, and the gas flow is controlled by the flow controller to enter the reactor from the first inlet B of the reactor inlet chamber 1, and the pressure detection device monitors it. The second gas outlet G exits the reactor and enters the tail gas recovery and treatment device for recovery and treatment, which can become a new gas source and continue to be recycled.

[0060] Th...

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Abstract

The invention discloses a gas-liquid and gas-liquid-solid multiphase micro-channel reactor and a reaction system. The reactor is sequentially provided with a gas inlet cavity, a reaction cavity and agas outlet cavity from bottom to top, wherein a micro-channel is arranged between a liquid inlet and a liquid outlet of the reaction cavity, an opening is formed in the top of the micro-channel, a liquid-blocking breathable film covers the opening, a plurality of micropores are formed in the bottom of the micro-channel, and a micro-bubble gas channel is formed between the micropores in the bottomand the opening in the top; the micropores are distributed in an array form, the size is 1-10 microns, and the requirement that the size of a generated single microbubble is not greater than the height of the inner diameter of the microchannel is met. The reactor can prolong the retention time of a liquid phase reaction and enable a gas phase and a liquid phase to be in full contact, the reactionconversion rate is improved, meanwhile, flow velocity interference between the gas phase and the liquid phase can be reduced to the maximum extent, the size of the reactor is effectively reduced, andthe reaction system is formed in a series or parallel combination mode. And the reaction system can be well applied to gas-liquid and gas-liquid-solid heterogeneous catalytic reactions.

Description

technical field [0001] The invention belongs to the technical field of microfluidic reactors, in particular to a gas-liquid and gas-liquid-solid multiphase microchannel reactor and a reaction system. Background technique [0002] Microchannel reactors usually contain tiny channel sizes and diverse channel types. They have significant advantages such as large specific surface area, high mass and heat transfer performance, light weight, small size, compact structure, and easy integration. They can achieve instant uniformity of materials. Mixing and high-efficiency heat transfer have been widely used in petrochemical, aerospace, electronic information, automotive industries and other fields. [0003] Gas-liquid or gas-liquid-solid heterogeneous catalytic reactions are the most common reaction types in the chemical industry, such as catalytic hydrogenation, catalytic oxidation, Fischer-Tropsch synthesis, etc. The gas-liquid / gas-liquid-solid microchannel reactor is considered to...

Claims

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Application Information

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IPC IPC(8): B01J19/00
CPCB01J19/0093
Inventor 李新颖周伟郑南峰吴庆远石添华张汝辉袁丁
Owner XIAMEN UNIV