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A waste FCC catalyst alumina skeleton crushing recovery process and device

A waste catalyst and alumina technology, which is applied to the removal of solid waste, engine sealing, mechanical equipment, etc., can solve the problems of poor separation effect of magnetic separator, achieve good sealing effect and prolong service life

Active Publication Date: 2021-10-29
泉州丰鹏环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a crushing and recovery process of waste FCC catalyst alumina skeleton, which solves the problem of poor separation effect of magnetic separator in the existing process

Method used

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  • A waste FCC catalyst alumina skeleton crushing recovery process and device
  • A waste FCC catalyst alumina skeleton crushing recovery process and device
  • A waste FCC catalyst alumina skeleton crushing recovery process and device

Examples

Experimental program
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Effect test

Embodiment 1

[0035]A waste FCC catalyst alumina framework crushing recovery process, comprising the following steps:

[0036] (a) Dispersed pulping of spent catalyst: put the spent catalyst into the feed bin 1, and send the spent catalyst quantitatively into the mixing tank-3 through the screw conveyor 2 to stir and add water to disperse to make ore slurry, wherein the screw conveyor 2 is made of The frequency conversion motor controls its speed, and the feeding speed can be flexibly changed to adjust the pulp concentration. The solid-liquid ratio of the pulp is 3:3;

[0037] (b) Grinding of pulp: the pulp obtained through step (a) is pumped to the rod mill 5 by the slurry pump-4 for grinding, and the alumina skeleton of the spent FCC catalyst in the pulp is inside the rod mill 5 It is continuously knocked and rolled by steel rods, and fully ground into fine particles with a particle size of less than 200 mesh;

[0038] (c) secondary adjustment of pulp concentration: the ground pulp flows...

Embodiment 2

[0044] A waste FCC catalyst alumina framework crushing recovery process, comprising the following steps:

[0045] (a) Dispersed pulping of spent catalyst: put the spent catalyst into the feed bin 1, and send the spent catalyst quantitatively into the mixing tank-3 through the screw conveyor 2 to stir and add water to disperse to make ore slurry, wherein the screw conveyor 2 is made of The frequency conversion motor controls its speed, and the feeding speed can be flexibly changed to adjust the pulp concentration. The solid-liquid ratio of the pulp is 3:5;

[0046] (b) Grinding of pulp: the pulp obtained through step (a) is pumped to the rod mill 5 by the slurry pump-4 for grinding, and the alumina skeleton of the spent FCC catalyst in the pulp is inside the rod mill 5 It is continuously knocked and rolled by steel rods, and fully ground into fine particles with a particle size of less than 200 mesh;

[0047] (c) secondary adjustment of pulp concentration: the ground pulp flow...

Embodiment 3

[0053] A waste FCC catalyst alumina framework crushing recovery process, comprising the following steps:

[0054] (a) Dispersed pulping of spent catalyst: put the spent catalyst into the feed bin 1, and send the spent catalyst quantitatively into the mixing tank-3 through the screw conveyor 2 to stir and add water to disperse to make ore slurry, wherein the screw conveyor 2 is made of The frequency conversion motor controls its speed, and the feeding speed can be flexibly changed to adjust the pulp concentration. The solid-liquid ratio of the pulp is 3:7;

[0055] (b) Grinding of pulp: the pulp obtained through step (a) is pumped to the rod mill 5 by the slurry pump-4 for grinding, and the alumina skeleton of the spent FCC catalyst in the pulp is inside the rod mill 5 It is continuously knocked and rolled by steel rods, and fully ground into fine particles with a particle size of less than 200 mesh;

[0056] (c) secondary adjustment of pulp concentration: the ground pulp flow...

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Abstract

The invention provides a crushing and recovery process of alumina framework of waste FCC catalyst, which comprises the following steps: (a) dispersion pulping of waste catalyst; (b) grinding of pulp; (c) secondary adjustment of pulp concentration; (d) alumina Skeleton particle size screening; (e) impurity removal of alumina skeleton; (f) product pressure filtration dehydration; (g) water recycling, the present invention also provides a waste FCC catalyst alumina skeleton crushing recovery device. The waste FCC catalyst alumina skeleton crushing and recycling process provided by the present invention adds agitating tank 1 to cooperate with agitating tank 2 to form a two-stage precise adjustment of the pulp concentration, and adds a vibrating screen to screen large-grained pulp to return and grind again to form a cycle. The pulp of magnetic separator 1 and magnetic separator 2 reaches the required particle size, which is conducive to the improvement of the separation effect and the formation of the subsequent press dehydration filter cake.

Description

technical field [0001] The invention relates to the technical field of recovering alumina skeletons of waste FCC catalysts, in particular to a crushing and recycling process and device for alumina skeletons of waste FCC catalysts. Background technique [0002] FCC catalyst is an important part of catalytic cracking (FCC for short). As the crude oil processing volume increases year by year, the demand for FCC catalyst increases year by year. However, during use, the activity of FCC catalyst gradually decreases with time, so A large amount of spent FCC catalysts are produced every year. In order to avoid pollution of the environment by spent FCC catalysts and prevent waste of resources, it is necessary to recycle and reuse spent FCC catalysts that are significantly deactivated. However, in the recycling process of alumina skeleton of waste FCC catalyst currently used, there is a problem that the separation effect of the magnetic separator is not good. [0003] To sum up, how ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00F16J15/3204F16J15/3248
CPCB09B3/00B09B5/00F16J15/3204F16J15/3248
Inventor 林宝金张方宇曾建礼曹远超陈松阳
Owner 泉州丰鹏环保科技有限公司