Solid-liquid separation device and solid-liquid separation method for slurry bed reactor

Abstract

The invention provides a solid-liquid separation device for a slurry bed reactor. The device comprises the slurry bed reactor, a solid-liquid settling separation system connected with the slurry bed reactor, a solid-liquid cyclone separation system connected with the solid-liquid settling separation system and a membrane separation system connected with the solid-liquid cyclone separation system. The invention also provides a solid-liquid separation method for the slurry bed reactor, wherein slurry discharged from the slurry bed reactor sequentially passes through the solid-liquid settling separation system, the solid-liquid cyclone separation system and the membrane separation system and is separated, wherein the membrane separation system is used for separating catalyst particles with particle sizes less than 10 mum. The technical scheme of the invention not only can meet the solid-liquid separation accuracy, but also can ensure long-period running of the device.

Description

technical field [0001] The invention relates to a solid-liquid separation device and method for a slurry bed reactor, which is suitable for most solid-liquid separation processes. Background technique [0002] Slurry bed reactors are widely used in chemical, petrochemical, biochemical and other fields due to their uniform dispersion effect, good transfer performance, and convenient operation. Especially in recent years, slurry bed reactors have shown great development potential compared with fixed bed reactors in Fischer-Tropsch synthesis and methanol synthesis from natural gas, and have accumulated experience in the promotion and use of them in chemical, petrochemical, biochemical and other fields. rich experience. [0003] Because the catalyst of the Fischer-Tropsch synthesis slurry bed reaction is suspended in the reactor, it is necessary to separate the liquid reaction product and the catalyst. Whether an efficient and reliable separation system can be provided is a ke...

AI Technical Summary

Problems solved by technology

Although the membrane separation process is simple and the separation efficiency is high, the equipment investment is huge and the cost is high

And the membrane separator has high separation precision, but too high solid content will increase the frequency of recoil. Under the same treatment capacity, high solid content also needs to increase the area of ​​membrane separation and increase equipment investment.

Therefore, it has been difficult to achieve a reasonable unity of indicators such as separation accuracy, long-term operation, equipment investment, and operating economy.

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