Device and method for carrying out gas-liquid-solid reaction by using micro-foam packed bed

Abstract

The gas-liquid-solid reaction simultaneously relates to three phase states of gas, liquid and solid, and plays a huge role in the fields of fine chemical engineering, pharmaceutical process, wastewater treatment and the like. Gas-liquid-solid reaction generally depends on a stirring kettle, a bubbling tower, a trickle bed and other traditional multiphase reactors, and the reactors often have the problems of low interface area, poor mass and heat transfer efficiency and the like. The invention provides a device and method for carrying out gas-liquid-solid reaction by using a micro-foam packed bed. As the micro-foam packed bed has the advantages of micron-sized characteristic size, high porosity, small pressure drop and the like, the micro-foam packed bed has the advantages of high mixing efficiency, high reaction speed, quick heat transfer, easiness in catalyst replacement and the like when being used for gas-liquid-solid reaction, and can be widely applied to the fields of fine chemical engineering, medicines, environments and the like.

Description

Technical field [0001] The invention belongs to the technical field of reactors used in gas-liquid-solid catalytic processes in the chemical industry. More specifically, the invention relates to a device and method for gas-liquid-solid reactions using micro-foam packed beds. Background technique [0002] Gas-liquid-solid reaction is a reaction process in which three different phases of gas, liquid and solid exist simultaneously. At present, gas-liquid-solid reaction plays a huge role in the fields of fine chemicals, pharmaceutical processes and wastewater treatment. Gas-liquid-solid reactions generally rely on traditional multiphase reactors such as stirred tanks, bubble towers and trickle beds. These reactors often have low interface area, low mass and heat transfer efficiency, and potential safety problems. For example, the mass transfer limitation between multiphase fluids in a traditional stirred tank reactor will result in a lower reaction rate and conversion rate in the ca...

AI Technical Summary

Problems solved by technology

Gas-liquid-solid reactions generally rely on traditional multiphase reactors such as stirred tanks, bubble columns, and trickle beds, and these reactors often have low interface area, low mass and heat transfer efficiency, and potential safety issues

For example, mass transfer limitations between multiphase fluids in conventional stirred tank reactors will lead to lower reaction rates and conversions in catalytic hydrogenation processes

At the same time, in order to ensure the reaction effect, the common gas-liquid-solid reaction such as hydrogenation reaction process, the system pressure is usually above 1Mpa, too high pressure will bring safety hazards and high equipment costs

For the oxidation reaction process using oxygen, due to the low gas-liquid mass transfer efficiency, the reactor is usually relatively large, and there is a gas phase space in a batch reactor such as a stirred tank, which greatly increases the risk of the reaction process

Therefore, this type of gas-liquid-solid reaction has problems such as low reaction efficiency, large reactor volume and low process safety, and new technologies are urgently needed to improve the process.

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