CN108609857A

CN108609857A - A method of devitrified glass is prepared using catalytic cracking spent catalyst

Info

Publication number: CN108609857A
Application number: CN201611129224.8A
Authority: CN
Inventors: 张宏哲; 房师平; 汪皕喆; 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: 2016-12-09
Filing date: 2016-12-09
Publication date: 2018-10-02

Abstract

The invention belongs to chemical technology fields, are related to a kind of method preparing devitrified glass using catalytic cracking spent catalyst.A method of devitrified glass is prepared using catalytic cracking spent catalyst, using catalytic cracking spent catalyst as raw material, grinding control grain size is first passed through in 100~300 mesh, adjusts Si, Al ratio, disposed subsequently into hot plasma arc reactor vitrifying.The method for preparing devitrified glass using catalytic cracking spent catalyst of the present invention is not only able to dispose the dead catalyst of pollution environment, the devitrified glass with higher economic value is also obtained, compared with prior art, has higher economic benefit and environmental benefit.

Description

A method of devitrified glass is prepared using catalytic cracking spent catalyst

Technical field

The invention belongs to chemical technology fields, are related to a kind of side preparing devitrified glass using catalytic cracking spent catalyst Method.

Background technology

Made catalyst activity accelerate to decline by heavy metal pollution due to catalyst in catalytic cracking unit, leads to catalyst Reaction selectivity be deteriorated, if only leaned on, nature runs damage and to supplement new agent be to be unable to maintain that the activity and selectivity of poising agent, Therefore it needs periodically to draw off a part of poising agent to ensure that the activity and selectivity of catalyst in device is horizontal.It is this draw off it is flat Weighing apparatus agent is known as catalytic cracking spent catalyst（Hereinafter referred to as dead catalyst）.Dead catalyst activity is low, and contains an a certain amount of huge sum of money Belong to, pollution is strong, and harmless treatment is difficult, does not conform to the random processing of specification and can constitute a serious threat to environment for human survival.

Many research institutions start with certain ingredients in dead catalyst and are recycled as raw material both at home and abroad, this Environmental pollution is not only reduced, and reduces product cost.

8,216,532 B1 of United States Patent (USP) US propose a kind of method recycling heavy metal in dead catalyst, using acid, alkali Equal chemical reagent are reacted with dead catalyst, so that the noxious materials such as deposition heavy metal on a catalyst such as vanadium, nickel is occurred anti- It answers, so that be blocked duct, surface of catalyst is cleaned, the activity of catalyst loss can be made to be restored.

Chinese patent 200810014209.8 proposes a kind of activity of organic-inorganic coupled method resurrection catalyst, after resurrection Catalyst can loop back to catalytic cracking unit and reuse.

Although the above method can be such that the active part of dead catalyst restores, but cannot restore catalyst completely Activity, therefore, always some dead catalyst needs to be discharged into environment, pollutes and wastes.

The agent structure of vitreum is the network structure being made of oxygen-octahedron, in the network architecture Si, and O is as net Network forms body building network；The elements such as Al belong to network outer body, interrupt the extension of network structure.When outside Network former and network When the ratio of body reaches a certain level, vitreum forms devitrified glass by partial destruction.The main component of dead catalyst is Al₂O₃And SiO₂, therefore, crystallite can be prepared under the conditions of the high-temperature process of hot plasma by the ratio of regulation and control Si and Al Glass.

Invention content

In order to solve the problem of that dead catalyst processing not exclusively causes environmental pollution and the wasting of resources in the prior art, this Invention provides a kind of method that innoxious use dead catalyst prepares devitrified glass.

The present invention solve its technical problem the technical solution adopted is that：It is a kind of that crystallite is prepared using catalytic cracking spent catalyst The method of glass first passes through grinding control grain size in 100~300 mesh, regulates and controls Si, Al using catalytic cracking spent catalyst as raw material Than being disposed subsequently into hot plasma arc reactor vitrifying.

Si, Al ratio of the dead catalyst is（5~20）:1.

Voltage is controlled in vitrifying disposal process in 20-60V, electric current 100-190A.

The method for preparing devitrified glass using catalytic cracking spent catalyst of the present invention, is not only able to dispose pollution environment Dead catalyst, the devitrified glass with higher economic value is also obtained, compared with prior art, there is higher economic imitate Benefit and environmental benefit.

Description of the drawings

Fig. 1 is the SEM figures of dead catalyst raw material；

Fig. 2-4 is the electromicroscopic photograph for the class devitrified glass that the embodiment of the present invention obtains.

Specific implementation mode

With reference to the accompanying drawings and examples to the method for preparing devitrified glass using catalytic cracking spent catalyst of the present invention It is described in detail.

1 the present embodiment of embodiment use catalytic cracking spent catalyst prepare the method for devitrified glass for：By the useless catalysis of 40g Agent, first ground, for control grain size in 100 mesh, Si, Al ratio are 20:1, subsequently into hot plasma arc reactor, voltage 20V, Electric current 100A, reaction time 5min are to get to devitrified glass.

2 the present embodiment of embodiment use catalytic cracking spent catalyst prepare the method for devitrified glass for：

First ground by 40g dead catalyst, for control grain size in 300 mesh, Si, Al ratio are 20:1, subsequently into hot plasma arc Reactor, voltage 40V, electric current 150A, reaction time 5min is to get to devitrified glass.

3 the present embodiment of embodiment use catalytic cracking spent catalyst prepare the method for devitrified glass for：

First ground by 40g dead catalyst, for control grain size in 200 mesh, Si, Al ratio are 5:1, subsequently into hot plasma arc Reactor, voltage 60V, electric current 190A, reaction time 5min is to get to devitrified glass.

4 the present embodiment of embodiment use catalytic cracking spent catalyst prepare the method for devitrified glass for：By the useless catalysis of 40g Agent, first ground, for control grain size in 200 mesh, Si, Al ratio are 5:1, subsequently into hot plasma arc reactor, voltage 60V, Electric current 190A, reaction time 5min are to get to devitrified glass.

Four embodiments of the present invention have all prepared devitrified glass, and compared with the dead catalyst raw material of Fig. 1, what is obtained is micro- The electron microscope of crystal glass is shown in Fig. 2,3,4 respectively.

Claims

1. a kind of method preparing devitrified glass using catalytic cracking spent catalyst, it is characterised in that：With the useless catalysis of catalytic cracking Agent is raw material, first passes through grinding control grain size in 100~300 mesh, regulates and controls Si, Al ratio, reacted subsequently into hot plasma arc Device vitrifying is disposed.

2. the method according to claim 1 for preparing devitrified glass using catalytic cracking spent catalyst, it is characterised in that：Institute Si, Al ratio for the dead catalyst stated is（20~5）:1.

3. the method according to claim 1 for preparing devitrified glass using catalytic cracking spent catalyst, it is characterised in that：Glass Voltage is controlled in glass disposal process in 20-60V, electric current 100-190A.