Method, apparatus and system for catalyst fines removal in a boiling bed reactor

By combining centrifugal separation with a three-phase separator and a two-stage cyclone separator, the problem of catalyst powder escape in the fluidized bed hydrogenation reactor was solved, achieving efficient catalyst separation and resource recycling, and improving the reactor's operating efficiency and separation accuracy.

CN117339494BActive Publication Date: 2026-06-09SICHUAN UNIV +1
View PDF 12 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN UNIV
Filing Date
2023-11-01
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing fluidized bed hydrogenation reactors, the escape or loss of catalyst particles smaller than 0.1 mm leads to catalyst coking, wall corrosion, and reduced reaction efficiency. Furthermore, the separation efficiency and precision of existing separators are limited.

Method used

A three-phase separator is used for centrifugal separation, combined with liquid-solid mixed-phase product extraction and micro powder removal steps. The catalyst micro powder is separated by centrifugal force field, and the micro powder is further collected by a two-stage cyclone separator. An annular overflow structure is designed to promote multi-particle-size separation.

Benefits of technology

It effectively reduces the escape or loss of catalyst powder, prevents coking and wall corrosion, improves reaction efficiency, and enables resource recycling.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117339494B_ABST
    Figure CN117339494B_ABST
Patent Text Reader

Abstract

The present application belongs to the technical field of biomass energy equipment, and particularly discloses a method, device and system for removing catalyst fines from a boiling bed reactor, aiming to solve the problem of how to reduce the escape or loss of catalysts with a particle size below 0.1 mm. The method, device and system provided by the present application can lead the liquid-solid mixed phase product out of the boiling bed reactor and separate it by using the centrifugal force field, so as to remove and collect catalyst fines with a particle size below 30 μm, regenerate the catalyst fines, and reduce the escape or loss of catalysts with a particle size below 0.1 mm in the reaction filling. By removing the catalyst fines in the liquid-solid mixed phase product, the catalyst fines can also be prevented from returning to the boiling bed reactor with the liquid phase for recycling, and problems such as wall corrosion caused by the coking and adhesion of the catalyst fines on the wall surface, and the reduction of reaction efficiency caused by the coking of the catalyst itself, can be avoided.
Need to check novelty before this filing date? Find Prior Art