Inner loop reactor with reacting and separating functions

Abstract

The invention relates to an inner loop reactor with reacting and separating functions. The reactor comprises a rising pipe, a downspout, a solid feeding port, a hydrocyclone inlet, an anti-flowing dead zone internal component, a liquid inlet, an air inlet, an air outlet, a flow guide drum, an air flow guide cone, an air vent, an overflow port, a hydrocyclone, a bottom flow port, an air-liquid integrated distributor and a liquid outlet, wherein the hydrocyclone is arranged at the lower part of the downspout of the loop reactor; the air flow guide cone and the air vent exist in the downspout, so that air can be prevented from entering the hydrocyclone; after the slurry enters the hydrocyclone, the solid-containing slurry enters the rising pipe through the bottom flow port, and clean products without solids flow out from a top flow port; and an external valve is used for controlling the flow of the clean products. The inner loop reactor has a simple structure, is low in cost, requires no special liquid-solid separating device, can simultaneously perform air-liquid-solid three-phase reaction, mass transfer and separation, and is suitable for the air-liquid-solid three-phase reaction taking solid grains as catalysts.

Description

technical field [0001] The invention belongs to the field of gas-liquid-solid three-phase reaction, especially a gas-liquid-solid reaction system in which the catalyst is a solid particle and the gas-liquid two-phase respectively participates in mass transfer and reaction, and the gas-liquid-solid three-phase separation is required. The three-phase reaction is an internal loop reactor with reaction and separation functions, which can be widely used in chemical reaction processes involving solid catalysts above the micron level. Background technique [0002] The inner loop reactor is a new type of reactor developed on the basis of the bubble column. It has a simple structure, no power device inside, good mass and heat transfer effects, and can perform gas-liquid, gas-solid and gas-liquid-solid reaction, so it is widely used in fermentation, energy, sewage treatment and other aspects. [0003] In the gas-liquid-solid three-phase reaction where the catalyst is solid particles,...

AI Technical Summary

Problems solved by technology

[0005] In the gas-liquid-solid three-phase reaction, especially for the three-phase reaction in which the catalyst is solid particles, the separation of solid particles is very important. Although CN105642201A is good in the mixing effect of the three-phase reaction, it cannot be simultaneously mixed in the reactor. Separation of solids cannot enhance the process of mixing and separation. For reactions such as Fischer-Tropsch synthesis that require separation and recycling of solids, an external separation device is required, which not only requires additional power, but also makes the process more complicated. Time-consuming, labor-intensive and increases floor space and operating expenses

Although a hydrocyclone with separation effect is added inside the CN105983377A device, the hydrocyclone is located in the gas-liquid separation area on the upper part of the reactor and only has the effect of gas-liquid separation

In addition, due to the presence of gas, the separation performance of the hydrocyclone is greatly reduced, and its application to gas-liquid-solid three-phase reactions is limited, especially when there are fine catalyst particles.

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