A filter system for slurry bed reactor

Abstract

The invention provides a filtering system for a slurry bed reactor. The filtering system comprises at least one group of filtering devices and a header, wherein the filtering devices comprise one group of filtering components and are vertically arranged in the slurry bed reactor; the header is a device with a gas-liquid separator at the upper end and an opening at the lower end and is arranged outside the slurry bed reactor, and the header is communicated with the upper end and the lower end of one group of filtering components through the side wall of the slurry bed reactor; generated liquid in the slurry bed reactor is filtered by the one group of filtering components to obtain a filtrate clear solution which flows into the header from the upper end and the lower end of the one group of filtering components and goes out from the lower end with a constant rate. The filtering system for the slurry bed reactor, provided by the invention, provides a reliable guarantee for continuous filtering of the three-phase mixture of gas, solid and liquid, so that the service life of a filter core is prolonged, and the constant-rate filtering of the filtering system is ensured.

Description

technical field [0001] The present invention relates to filtration systems for slurry bed reactors. More specifically, the present invention relates to a constant flow filtration system for a slurry bed reactor Background technique [0002] The slurry bed reactor usually has solid catalyst powder in the reactor, and the liquid product and feed gas generated by the reaction are in a state of gas-liquid-solid three-phase coexistence inside the reactor. For a continuous reaction slurry bed reactor, the synthesized product needs to be withdrawn from the reactor, but the catalyst needs to stay inside the filter. There are two usual treatment methods: one is to adopt the batch reaction method, after each batch of reaction is completed, all the materials are pumped out from the reactor into the filter, and then the filter is backwashed with the raw material liquid, and the catalyst is backwashed back to the filter. reactor, and then proceed to the next batch of reactions. In thi...

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Problems solved by technology

The problems of such a filter system are: 1. At the beginning of each filter cycle, the constant filter pressure difference will cause solid particles to be pressed onto the filter element by this pressure difference, and will not easily fall off during backwashing in the future

As the filtration time prolongs, the liquid inside the filter element will flow out of the filter element first, and the gas will accumulate inside the filter element, causing the inside of the filter element to be completely gas before backwashing. The reverse driving force of the solid will be much smaller than that of the liquid, resulting in partial shedding of the filter cake, and then the backwash liquid entering the filter element cannot maintain a uniform reverse flow, thus affecting the backwash regeneration effect

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