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Method for preparing mullite from FCC waste catalyst

A waste catalyst and mullite technology, which is applied in the field of preparing mullite from FCC waste catalyst, can solve the problems of polluting the environment and difficult disposal of FCC waste catalyst, and achieve high economic value, short reaction time and good technical effects

Inactive Publication Date: 2018-01-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the problem that FCC waste catalyst is difficult to handle and pollutes the environment in the prior art, and a new method for preparing mullite from FCC waste catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 40g spent FCC catalyst experiment, experimental conditions: catalyst particle size 100 mesh, thermal plasma reactor voltage 20V, current 100A, reaction temperature 1200°C, reaction time 10min, the mass content of the obtained product mullite is 89%.

Embodiment 2

[0017] 40g spent FCC catalyst experiment, experimental conditions: catalyst particle size 100 mesh, thermal plasma reactor voltage 40V, current 150A, reaction temperature 1300°C, reaction time 1min, the mass content of the obtained product mullite is 91%.

Embodiment 3

[0019] 40g spent FCC catalyst experiment, experimental conditions: catalyst particle size 100 mesh, thermal plasma reactor voltage 60V, current 190A, reaction temperature 1500°C, reaction time 5min, the mass content of the obtained product mullite is 90%.

[0020] Obviously, the treated waste FCC catalyst can prepare harmless mullite, which not only realizes the harmless treatment of the FCC waste catalyst, but also the prepared mullite has high economic value and obvious technical advantages.

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Abstract

The invention relates to a method for preparing mullite from an FCC waste catalyst. The invention mainly solves the problem that the FCC waste catalyst is difficult to treat and pollutes the environment in the prior art. The method for preparing the mullite from the FCC waste catalyst comprises the following step: treating the FCC waste catalyst in a thermal plasma reactor at 1200 to 1500 DEG C for 1 to 10 min so as to obtain products comprising the mullite, wherein the plasma is a plasma arc or a plasma torch. Thus, the problem is well solved, and the method can be used for treatment of the FCC waste catalyst.

Description

Technical field [0001] The invention relates to a method for preparing mullite from FCC waste catalyst. Background technique [0002] At present, the annual processing capacity of my country's catalytic cracking (FCC) has exceeded 150 million tons, and the number of catalysts consumed annually is more than 200,000 tons. During the use of FCC catalysts, the activity of the catalyst is reduced due to heavy metal contamination of the catalyst, which leads to poor reaction selectivity of the catalyst. It is impossible to maintain the activity and selectivity of the balancer if only natural runaway and replenishment of new agents are used. It is necessary to periodically discharge a part of the balancer to ensure the activity and selectivity of the catalyst in the device. This discharged balancer is called FCC spent catalyst. FCC spent catalysts are low in activity and contain a certain amount of heavy metals. They are highly polluting and difficult to dispose of harmlessly. Enterpr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/622
Inventor 张宏哲房师平牟桂芹张志远
Owner CHINA PETROLEUM & CHEM CORP
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