Product filtering system for three-phase slurry bed reactor

Abstract

The invention relates to a product filtering system for a three-phase slurry bed reactor. The product filtering system comprises an intra-reactor filter, an extra-reactor filter group, back-flushing fluid buffering tank group, a purified product buffering tank and a control system, wherein the intra-reactor filter comprises multiple groups of liquid-solid filtering and separating assemblies, and the intra-reactor filter is a coarse filter; the extra-reactor filter group comprises 2-3 extra-reactor filters, and each extra-reactor filter is a fine filter; and the control system controls the opening and closing of a flow control valve, an outlet control valve, a first valve and a second valve. According to the invention, by adoption of the combination of intra-reactor filtering and extra-reactor filtering, while a liquid product is coarsely filtered and extracted when passing through the intra-reactor filter to retain undamaged catalysts in the system, the liquid product entraining a small amount of damaged granule catalysts is further filtered and purified by the fine filters outside the system, thus, the problems in the prior art are avoided, the continuous online operation and online cleaning can be realized, and economy and high efficiency are achieved.

Description

technical field [0001] The invention relates to a product filtration system for a three-phase slurry bed reactor, the system is suitable for the separation of liquid products and solid catalysts in the three-phase slurry bed, and is specifically suitable for Fischer-Tropsch synthesis reactors in coal chemical industry The continuous extraction of liquid products to purify filter systems. Background technique [0002] A three-phase slurry bed reactor refers to a gas, liquid, and solid three-phase reactor in which gas is bubbled and dispersed, in which gas or (gas, liquid) is the reactant, and solid particles are mostly catalysts. The reaction product of the slurry bed is generally A mixture of liquid or gas and liquid. Slurry beds have remarkable heat transfer properties and are generally used in exothermic reactions. A typical application of slurry bed is F-T synthesis reaction. However, there are difficulties in the automatic and continuous extraction of liquid products ...

AI Technical Summary

Problems solved by technology

In this way, due to the use of a fine filter that completes the product purification task once in the device, the filtration flux is very low and a large filtration area is required, which not only leads to increased costs, but also makes it difficult to arrange in the device; The medium pressure difference increases rapidly, and frequent backwashing will affect the stability of the mass transfer of the reaction system in the reactor

Images