Liquid solid magnetic separation method

Abstract

A liquid solid magnetic separation method is characterized in that: in a settling magnetic separator, catalyst particles and a fischer-tropsch synthesis heavy product are preliminarily separated by gravity settling; separated slurry enters into a magnetic field zone, the catalyst particles are adsorbed by magnetic force in the magnetic field zone, the fischer-tropsch synthesis heavy product separated from the catalyst particles flows out from an outlet pipe, when the amount of the adsorbed catalyst particles reaches a certain amount, the magnetic field is removed, the catalyst particles sinks by gravity to a flow guide pipe, flows to the bottom of a settling tank, and is cycled to a reactor.

Description

technical field [0001] The invention relates to a solid-liquid separation method, in particular to a magnetic separation method of a slurry bed Fischer-Tropsch synthesis heavy product and a solid catalyst. Background technique [0002] With the changes in the world's energy structure and the increasing global environmental protection requirements, the method of preparing synthetic oil through Fischer-Tropsch synthesis using natural gas and coal-based syngas as raw materials has the advantages of clean products, no sulfur, nitrogen, and aromatic hydrocarbons, etc. In recent years, it has attracted the attention of countries all over the world. [0003] The core of Fischer-Tropsch synthesis technology is catalyst and reactor technology. Currently, Fischer-Tropsch synthesis catalysts mainly include cobalt catalysts and iron catalysts. In terms of reactors, the slurry bed Fischer-Tropsch synthesis reactor has the characteristics of convenient heat extraction, simple structure,...

AI Technical Summary

Problems solved by technology

When the sedimentation method is used alone for separation, because the fine particle catalyst is not easy to settle, the catalyst is carried over too much

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