CN107640966A

CN107640966A - The method that mullite is prepared by FCC dead catalyst

Info

Publication number: CN107640966A
Application number: CN201611090868.0A
Authority: CN
Inventors: 张宏哲; 房师平; 牟桂芹; 张志远
Original assignee: China Petroleum and Chemical Corp; Sinopec Qingdao Safety Engineering Institute
Current assignee: China Petroleum and Chemical Corp; Sinopec Qingdao Safety Engineering Institute
Priority date: 2016-12-01
Filing date: 2016-12-01
Publication date: 2018-01-30

Abstract

The present invention relates to a kind of method that mullite is prepared by FCC dead catalyst, mainly solves the problems, such as that FCC dead catalyst is difficult to handle, pollutes environment in the prior art.The present invention in heat plasma reactor according, the 10min of FCC dead catalyst 1 is disposed at 1,200 1500 DEG C, obtains the product for including mullite by using a kind of method that mullite is prepared by FCC dead catalyst；Wherein, plasma preferably solves above mentioned problem for the technical scheme of plasma arcs or plasma torch, available in the processing of FCC dead catalyst.

Description

The method that mullite is prepared by FCC dead catalyst

Technical field

The present invention relates to a kind of method that mullite is prepared by FCC dead catalyst.

Background technology

At present, the annual working ability of China's catalytic cracking (FCC) is more than 1.5 hundred million tons, annual spent catalyst number Amount is more than 200,000 tons.FCC catalyst in use, because catalyst is made under catalyst activity by heavy metal pollution Drop, causes the reaction selectivity of catalyst to be deteriorated, if it is to be unable to maintain that the work of poising agent only to run damage by nature and supplement new agent Property and selectivity, it is therefore desirable to periodically draw off a part of poising agent to ensure the activity and selectivity water of catalyst in device It is flat.This poising agent drawn off is referred to as FCC dead catalyst.FCC dead catalyst activity is low, and contains a certain amount of heavy metal, dirty Metachromia is strong, and harmless treatment is difficult, and enterprise is generally disposed using the burying method of simple general solid waste.FCC in 2016 Dead catalyst has been included in new issue《National Hazard waste register》, according to the management requirement of National Hazard waste, the useless catalysis of FCC The processes such as the generation of agent, storage, transport, disposal will will be greatly improved by the control of country, processing cost.

How to utilize the useful component in FCC dead catalyst, realization turns waste into wealth, reclaim the material that has use value and Resource, which is only, solves the problems, such as the basic of FCC dead catalyst.FCC dead catalyst recyclings, it on the one hand can pass through appropriate recycling Processing obtains additional economic benefit, reduces Petrochemical Enterprises and always runs spending；On the other hand the environment of FCC dead catalyst can also be avoided Secondary pollution.

FCC dead catalyst has been included in new issue within 2016《National Hazard waste register》, according to National Hazard waste Management requires, the process such as the generation of FCC dead catalyst, storage, transport, disposal is by will be greatly by the control of country, processing cost Width improves.FCC dead catalyst activity is low, and contains a certain amount of heavy metal, and contaminative is strong, therefore, it is necessary to FCC dead catalyst Carry out harmless treatment.

Poisonous and harmful element in FCC dead catalyst, predominantly heavy metal element, typically using landfill method, chemical method and Burning method carries out harmless treatment to FCC dead catalyst.

Landfill be easier with common method, but hazardous waste landfill construction cost is high and takes certain soil money Source, and resource can not be utilized effectively, therefore can gradually eliminate.

It is below the mark that chemical method can not only drop to the content of beary metal in dead catalyst state control, can also make money Effectively reclaimed in source.But the problem of this method pollutes environment there is also the spent acid aqueous slkali in disposal process.Particularly press According to《Hazardous waste judging standard general rule》Regulation, have toxicity (including Leaching, acute toxicity and other toxicity) and sense Waste after the hazardous waste processing of one or more kinds of hazard properties such as metachromia still falls within hazardous waste.Therefore, through chemistry FCC dead catalyst after method disposal is still hazardous waste, does not reach innoxious purpose.

The content of the invention

The technical problems to be solved by the invention are that FCC dead catalyst is difficult to handle, pollutes asking for environment in the prior art A kind of topic, there is provided new method that mullite is prepared by FCC dead catalyst.This method has FCC dead catalyst disposable, not dirty The advantages of contaminating environment.

To solve the above problems, the technical solution adopted by the present invention is as follows：It is a kind of that mullite is prepared by FCC dead catalyst Method, in heat plasma reactor according, FCC dead catalyst 1-10min are disposed at 1200-1500 DEG C, obtain including not coming The product of stone；Wherein, plasma is plasma arcs or plasma torch.

In above-mentioned technical proposal, it is preferable that the voltage of plasma reactor is in 20-60V, electric current 100-190A.

In above-mentioned technical proposal, it is preferable that the mass content of mullite is more than 85% in the product including mullite.

This patent proposes a kind of method that hot plasma disposal of resources FCC dead catalyst prepares mullite, directly Using heat plasma technology, without adding any added material, the dead catalyst of pollution environment is not only disposed, is also obtained Mullite with higher economic value.Compared with other mullites preparation technology, the reaction time is short, and energy consumption is low, and mullite Quality be basically unchanged, achieve preferable technique effect.

Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.

Embodiment

Embodiment 1

40g spent FCC catalysts are tested, experiment condition：The mesh of catalyst particle size 100, heat plasma reactor according voltage 20V, Electric current 100A, 1200 DEG C, reaction time 10min of reaction temperature, the mass content of products therefrom mullite is 89%.

Embodiment 2

40g spent FCC catalysts are tested, experiment condition：The mesh of catalyst particle size 100, heat plasma reactor according voltage 40V, Electric current 150A, 1300 DEG C, reaction time 1min of reaction temperature, the mass content of products therefrom mullite is 91%.

Embodiment 3

40g spent FCC catalysts are tested, experiment condition：The mesh of catalyst particle size 100, heat plasma reactor according voltage 60V, Electric current 190A, 1500 DEG C, reaction time 5min of reaction temperature, the mass content of products therefrom mullite is 90%.

Obviously, treated spent FCC catalyst can prepare harmless mullite, not only realize FCC dead catalyst Harmless treatment, and prepare mullite there is higher economic value, there is obvious technical advantage.

Claims

A kind of 1. method that mullite is prepared by FCC dead catalyst, in heat plasma reactor according, at 1200-1500 DEG C FCC dead catalyst 1-10min are disposed, obtain the product for including mullite；Wherein, plasma is plasma arcs or plasma Body torch.
2. the method for mullite is prepared by FCC dead catalyst according to claim 1, it is characterised in that plasma reactor Voltage in 20-60V, electric current 100-190A.
3. the method for mullite is prepared by FCC dead catalyst according to claim 1, it is characterised in that the production including mullite The mass content of mullite is more than 85% in product.