System and method for separating waste catalyst in Fischer-Tropsch synthesis residue wax

Abstract

The invention relates to the field of Fischer-Tropsch synthesis residue wax treatment, and discloses a system and a method for separating a waste catalyst in Fischer-Tropsch synthesis residue wax. Thesystem comprises a first-stage magnetic separation device, a synthetic wax intermediate tank, a waste catalyst receiving tank, a second-stage magnetic separation device, a flushing pipeline, a synthetic wax storage tank, a fine catalyst receiving tank and an incinerator, wherein the first-stage magnetic separation device comprises the following parts: a closed box body provided with a residue waxinlet, a synthetic wax outlet, a waste catalyst outlet and a heating and heat preservation structure, a rotatable sealed rotary drum arranged in the box body, a first magnet fixed in the rotary drum,and a scraping plate arranged at the waste catalyst outlet and contacting the outer surface of the rotary drum, the position of the magnet corresponds to the space between the residue wax inlet and the synthetic wax outlet in the box body, the magnet is used for attracting the waste catalyst in Fischer-Tropsch synthesis residue wax to be attached to the outer surface of the rotary drum, and the scraping plate is used for removing the waste catalyst on the outer surface of the rotary drum. With the system and the method, the recovery of synthetic wax in Fischer-Tropsch synthesis residue wax can be well realized.

Description

technical field [0001] The invention relates to the field of Fischer-Tropsch synthesis slag wax treatment, in particular to a system for separating spent catalysts in Fischer-Tropsch synthesis slag wax, and a method for separating spent catalysts in Fischer-Tropsch synthesis slag wax in the system. Background technique [0002] In the process of slurry bed Fischer-Tropsch synthesis using iron-based or cobalt-based catalysts, the catalyst is gradually deactivated, so the catalyst in the slurry-bed Fischer-Tropsch synthesis reactor needs to be added and removed regularly to keep the catalyst in the reactor The overall activity meets the requirements. [0003] The slag wax discharged from the slurry bed reactor is a slurry containing catalyst and wax, which contains 10-20% by weight of catalyst, and the waste catalyst needs to be separated and treated to recover the wax. In the prior art, the filtration method is generally used to separate the spent catalyst from the wax, but ...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a system and a system for separating waste catalysts in Fischer-Tropsch synthesis slag wax in order to overcome the poor continuity of operation when the Fischer-Tropsch synthesis slag wax separation catalyst exists in the prior art, the process is complicated, and the problem that the recovery rate of synthetic wax is not high. method

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