Chemical reaction system and its filter unit and filter system

Abstract

The invention relates to the field of raw material processing, and discloses a filtering unit, a filtering system and a chemical reaction system. The filtering unit comprises two walls which are oppositely arranged at intervals, a first filtering layer and a second filtering layer, wherein the first filtering layer and the second filtering layer extend between the two walls in the length direction, when the filtering unit performs filtering operation, a deformable device can deform to enable the size of the facing portion of each pair of filtering holes to be smaller than the size of the facing portion of each pair of the filtering holes when the filtering unit is in a natural state; when the filtering unit performs back flushing operation, the deformable device can deform to enable the size of the facing portion of each pair of the filtering holes to be larger than or equal to the size of the facing portion of each pair of the filtering holes when the filtering unit is in a natural state. According to the technical scheme, when the filtering unit performs the filtering operation, the size of the facing portion of each pair of the filtering holes can be reduced, and therefore the effect of fluid filtering is guaranteed, and when the filtering unit performs the back flushing operation, the size of the facing portion of each pair of the filtering holes is increased, so that the effect of back flushing is improved, and blockage of the filtering holes is effectively prevented.

Description

technical field [0001] The invention relates to the field of raw material processing, in particular to a filter unit, a filter system and a chemical reaction system. Background technique [0002] Filtration operation is an indispensable part of many chemical reactions, such as gas-liquid-solid three-phase slurry bed Fischer-Tropsch synthesis process, in which synthesis gas (CO+H 2 ) from the bottom of the slurry bed reactor into the slurry bed reactor where gas-liquid-solid three-phase coexistence occurs, and Fischer-Tropsch reaction occurs under the action of solid catalyst particles (mainly iron series) to generate liquid product Fischer-Tropsch wax (Fischer-Tropsch wax (Fischer-Tropsch wax) Wax is a methylene polymer, which is hydrocarbon-based synthesis gas or alkane synthesized from natural gas). During the reaction process, the generated Fischer-Tropsch wax needs to be continuously extracted from the slurry bed reactor through a filtration system to maintain the slurry...

AI Technical Summary

Problems solved by technology

However, since the deformable filter medium filled in the filter chamber is mostly made of rubber, plastic and other materials, it is difficult to apply the filter to working conditions with severe temperature and pressure; moreover, when filtering viscous liquids, it is precisely Since the filter medium cannot withstand high temperature, it is impossible to reduce the viscosity of the liquid by increasing the operating temperature, which will cause the sticky particles that enter the pores of the filter medium to easily adhere to the surface of the filter medium, resulting in failure to wash out during backwashing, eventually causing The filter is clogged, and this will cause the device to stop, seriously affecting the long-term stable operation of the device

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