Multilevel deflector-type bubble tower reactor and production process

Abstract

The invention relates to a multilevel deflector-type bubble tower reactor and a production process. A reaction section is formed by connecting a reaction column with a deflector; a liquid-phase distributor is arranged at the inner upper end of a tower body; a microbubble generator is arranged at the inner lower end of the tower body; a tower top is provided with an air outlet, and a tower bottom is provided with a liquid outlet; the upper end of the reaction section is provided with a liquid-phase feeding hole, the lower end of the reaction section is provided with an air-phase feeding hole; and more than two levels of reaction sections are arranged. The production process comprises the following steps: pumping liquid-phase raw materials into a tower through a pump by the liquid-phase distributor so that the liquid-phase raw materials sequentially flow downwards to all the levels of the reaction sections under the action of gravity; pumping gas-phase raw materials into the tower through a compressor by the microbubble generator; and enabling microvesicles to move upwards under the action of buoyancy and reversely contact and react with the liquid-phase raw materials under the leading action of the deflector so that liquid-phase reaction products flow out from the tower bottom, and gas-phase reaction products are exhausted from the tower top. The invention has the advantages ofsmall investment, little energy consumption, small floor area, high conversion rate and wide suitability.

Description

technical field [0001] The invention relates to a multi-stage diversion type bubble column reactor and a production process, belonging to the improvement of reaction equipment and production process in chemical unit operation. Background technique [0002] At present, the gas-liquid reaction devices commonly used in industrial production are bubble reactors or stirred tank reactors. These two types of traditional reactors have low reaction efficiency and usually relatively large equipment, which occupy a large area and high one-time investment costs. , the operating cost is also high, and the application field is limited by the reaction system. [0003] The multi-stage loop reactor developed based on the bubble reactor adopts multi-stage guide tubes and internal components of different structures, so that the gas phase and liquid phase can realize the flow of large loop flow and small loop flow, and improve the two-phase flow condition. It improves the mass transfer efficie...

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Problems solved by technology

[0002] At present, the gas-liquid reaction devices commonly used in industrial production are bubble reactors or stirred tank reactors. These two types of traditional reactors have low reaction efficiency and usually relatively large equipment, which occupy a large area and high one-time investment costs. , the operating cost is also high, and the application field is limited by the reaction system

[0003] The multi-stage loop reactor developed based on the bubble reactor adopts multi-stage guide tubes and internal components of different structures, so that the gas phase and liquid phase can realize the flow of large loop flow and small loop flow, and improve the two-phase flow condition. It improves the mass transfer efficiency, but its defect is that at any cross section of the tower body, the gas phase and the liquid phase only form a layer of circulation, that is, there is only one large circulation sleeve and a small circulation, resulting in a low gas holdup in the annulus and effective transmission. The mass area is not very large, the utilization rate of the reactor is low, and the overall efficiency of the reactor is low

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