Method and device for gas-solid reaction

Abstract

The invention relates to a method for gas-liquid reaction, comprising: putting a solid material needing to carry out reaction into a reaction container; closing the reaction container and checking whether the reaction container leaks gases or not; if no, adding a gas material to carry out reaction; opening a circulating blower used for controlling the flow speed of the gas in the reaction container and a heater controlling the temperature of the gas in the reaction container; and setting the rotation speed of the circulating blower needed by the gas-solid reaction and the temperature of the heater; after the reaction between a solid material and the gas material is finished, the heater is closed and residual gas is discharged; the method can ensure the gas in a reactor under a high temperature and a high pressure not to leak and simultaneously meet the gas flow speed needed by the circulating process.

Description

technical field [0001] The invention relates to a mixer with a rotating stirring device in a fixed container, in particular to a gas-solid reaction method and a gas-solid reaction device. Background technique [0002] In industrial production such as chemical industry, the problem of reaction between gas and solid is often encountered. The existing gas-solid reactor mainly includes fluidized bed, moving bed, fixed bed and other forms, among which fluidized bed and fixed bed are more suitable for solid The particle distribution is relatively concentrated and the fluidity of the reaction system is good. The fluidized bed equipment uses a fan / compressor as the tool for gas delivery, and it works under a slight positive pressure after entering the mixer. In addition, the particle size of the solid material is checked. There is a limit, generally 40-80um. If the particle size is too large, the fluidization velocity is required to be too high, and the fluidization performance is ...

AI Technical Summary

Problems solved by technology

[0005] Firstly, equipment needs to be added for tail gas circulation treatment, and secondly, if the amount of circulating gas is increased, it is difficult for the compressor to meet the usage requirements, and if the reacting gas is a highly corrosive gas and needs to work at high temperature, then The fixed-bed vessel-type reaction vessel cannot guarantee that the gas will not leak under high temperature and high pressure, and certain solid materials may be taken away by the flowing gas;

[0006] In addition, the mass transfer and heat transfer properties of solid particles are poor. During the exothermic reaction, the heat is not easy to diffuse rapidly, resulting in a large reaction temperature gradient in the fixed bed, making the reaction between solid particles and gas uneven, and prone to local Overheating, or sudden cooling, can not replenish heat in time, so that some solid particles and gas react incompletely

[0007] Wherein, if the reaction method of gas and solid particles in the prior art is adopted, since the solid particles are a static fixed bed, fillers must be filled at both ends, which makes it inconvenient to disassemble the solid particles, and the solid particles must also be disassembled. Particles and fillers are separated, which makes labor intensive and difficult to automate

In particular, when the solid particles are ultra-fine powder materials with corrosive and pungent odors, it is easy to pollute the environment and damage the health of operators due to inconvenient loading and unloading.

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