Novel multiphase flow plate type tower reactor

Abstract

The invention discloses a novel multiphase flow plate type tower reactor. The novel multiphase plate type tower reactor comprises a tower body and is characterized in that a slurry settling pond or stirring tank is designed at the bottom of the tower body; the bottom of the slurry settling pond or the stirring tank adopts a conical design; a solid discharge opening is formed in the lowermost end of the slurry settling pond or the stirring tank; an air inlet channel is arranged at a position, positioned above the slurry settling pond or the stirring tank, on the bottom side face of the tower body; the air inlet channel is connected with a gas distribution device; an intermediate section of the tower body adopts a multiplayer tower plate structure; an interlayer space is reserved between every two layers of tower plates and allows gas to pass through, and a continuous flowing path formed between two layers of slurry is avoided; a slurry spraying device is arranged above the multiple layers of tower plates of the tower body and is connected with a slurry feed opening; a demister is arranged above the slurry spraying device. According to the novel multiphase plate type tower reactor disclosed by the invention, uniform dispersion of slurry at a macro level can be realized; by control over the pore sizes and the shapes of solid-liquid channels on the tower plates (or by control over the slopes of triangular sheets on the tower plates), the slurry suitable for different rheological properties can be designed; the utilization efficiency of the tower is effectively improved.

Description

technical field [0001] The invention belongs to the field of chemical industry or biochemical industry or hydrometallurgy. Background technique [0002] Uniform dispersion between different phase states in multiphase flow reactions has always been a difficult point. For fast and medium-speed reactions, traditional reactors such as fluidized beds, fixed beds, trickle beds, slurry beds, and stirred tanks are generally used in order to uniformly disperse different phases. This method has to consume a large amount of mechanical energy to ensure continuous and uniform mixing and contact between different phases, but for slow reactions, a large amount of mechanical energy consumption virtually increases the huge operating cost. For the gas-liquid-solid multiphase flow bioreaction process, in addition to the increase in operating costs, the strong shear stress generated by vigorous mixing will also destroy the microbial cell wall, resulting in the death of the microorganisms and r...

AI Technical Summary

Problems solved by technology

This method has to consume a large amount of mechanical energy to ensure continuous and uniform mixing and contact between different phases, but for slow reactions, a large amount of mechanical energy consumption virtually increases the huge operating cost

For the gas-liquid-solid multiphase flow bioreaction process, in addition to the increase in operating costs, the strong shear stress generated by vigorous mixing will also destroy the microbial cell wall, resulting in the death of the microorganism, and instead reduce the reaction rate.

[0003] In the field of hydrometallurgy, such as the biological oxidation pretreatment process of sulfide-containing fine gold ore, the biological oxidation metal extraction process of sulfide ores such as zinc sulfide ore and copper sulfide ore, etc., if the traditional heap leaching process is adopted, there are Large area, long heap leaching time and other disadvantages lead to low production efficiency; if a stirred tank reactor is used, in order to make the gas-liquid-solid mix evenly and remove the heat of reaction in time, it is necessary to increase the stirring rate and increase the aeration rate. The strong shear stress generated by this vigorous mixing will destroy the cell wall of bacteria, which is not conducive to the growth of bacteria. At the same time, continuous stirring and aeration require a lot of energy and high operating costs.

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