Method for recycling waste FCC catalyst

A catalyst and resource utilization technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low added value of products and low price of building ceramsite problems, to achieve the effects of energy saving and environmental protection in the preparation process, realization of resource utilization, and improvement of catalytic activity

Active Publication Date: 2018-12-14
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses waste from thermal power plants and petrochemical enterprises to produce ceramsite, which realizes the resource utilization of waste, and has obvious environmental and social benefits. However, the price of the produced building ceramsite is relatively low, and the added value of the product is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for recycling waste FCC catalysts. The method described in this embodiment is:

[0026] (1) With 50-58wt% spent FCC catalyst, 37-45wt% clay and 2-5wt% TiO 2 It is used as a catalyst raw material, mixed, dried at 102-105° C., and ground to a particle size of 0.05-0.1 mm to obtain a catalyst raw material mixture.

[0027] (2) Put the catalyst raw material mixture into a disc granulator, and under the condition of rotation, spray the transition metal salt solution to the catalyst raw material mixture, and the spraying amount of the transition metal salt solution is 100% of the catalyst raw material 10-15 wt% of the mixture, the disc granulator is rotated until the mixture of catalyst raw materials forms spherical catalyst particles with a particle diameter of 3-5 mm.

[0028] (3) drying the spherical catalyst particles at 102-105° C., and then sintering at 1100-1150° C. for 15-22 minutes to prepare an ozone catalyst.

[0029] (4) The ozone catalyst is filled in...

Embodiment 2

[0031] A method for recycling waste FCC catalysts. The method described in this embodiment is:

[0032] (1) With 54-62wt% spent FCC catalyst, 33-41wt% clay and 2-5wt% TiO 2 It is used as a catalyst raw material, mixed, dried at 102-105° C., and ground to a particle size of 0.05-0.1 mm to obtain a catalyst raw material mixture.

[0033] (2) Put the catalyst raw material mixture into a disc granulator, and under the condition of rotation, spray the transition metal salt solution to the catalyst raw material mixture, and the spraying amount of the transition metal salt solution is 100% of the catalyst raw material 10-15 wt% of the mixture, the disc granulator is rotated until the mixture of catalyst raw materials forms spherical catalyst particles with a particle diameter of 3-5 mm.

[0034] (3) drying the spherical catalyst particles at 102-105° C., and then sintering at 1130-1180° C. for 18-24 minutes to prepare an ozone catalyst.

[0035] (4) The ozone catalyst is filled in...

Embodiment 3

[0037] A method for recycling waste FCC catalysts. The method described in this embodiment is:

[0038] (1) With the spent FCC catalyst of 58~66wt%, the clay of 29~37wt% and the TiO of 2~5wt% 2 It is used as a catalyst raw material, mixed, dried at 102-105° C., and ground to a particle size of 0.05-0.1 mm to obtain a catalyst raw material mixture.

[0039](2) Put the catalyst raw material mixture into a disc granulator, and under the condition of rotation, spray the transition metal salt solution to the catalyst raw material mixture, and the spraying amount of the transition metal salt solution is 100% of the catalyst raw material 10-15 wt% of the mixture, the disc granulator is rotated until the mixture of catalyst raw materials forms spherical catalyst particles with a particle diameter of 3-5 mm.

[0040] (3) drying the spherical catalyst particles at 102-105° C., and then sintering at 1150-1200° C. for 21-26 minutes to prepare an ozone catalyst.

[0041] (4) The ozone c...

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Abstract

The invention discloses a method for recycling a waste FCC catalyst. The method comprises the following technical scheme: taking 50 to 70 wt% of the waste FCC catalyst, 25 to 45 wt% of clay and 2 to 5wt% of TiO2 as catalyst materials, mixing the raw materials, drying a mixture, and grinding the mixture; placing the mixture into a disc granulator, spraying 10 to 15% by weight of a transition metalsalt aqueous solution of the catalyst raw material while rotating, rotating a disk grain making machine to form spherical catalyst particles having a particle diameter of 3 to 5 mm; and drying and sintering the material at 1080 to 1200 DEG C for 15 to 30 minutes to prepare an ozone catalyst. A catalytic oxidation tower or a reaction tank is filled with an ozone catalyst according to a filling volume of the ozone catalyst being 45 to 60% of the effective volume of the catalytic oxidation tower or the reaction tank, the dosage of ozone is 50-75 mg/L, the reaction is 15-30min, and the COD of difficultly degraded industrial wastewater after deep treatment is subjected to standardized discharge. The method has the advantages of simple process, low cost and high degree of resource utilization,and the prepared ozone catalyst has stable catalytic performance and high catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of recycling waste FCC catalysts. In particular, it relates to a method for recycling waste FCC catalysts. Background technique [0002] Fluid Catalytic Cracking (FCC Fluid Catalytic Cracking) is an important part of the modern petroleum refining process. The FCC process is to crack heavy raw materials at a certain temperature and under the action of a catalyst. It is the main method of lightening heavy oil. In recent years, my country's catalytic cracking technology has developed rapidly, and the processing capacity of FCC units is still in a state of improvement. At present, the gasoline produced by FCC units accounts for about 70% of the total gasoline production, and the total processing capacity has reached 180Mt / a. In the process of processing, the catalytic cracking process plays a pivotal role. However, the FCC catalyst will fail and be scrapped due to many reasons such as carbon deposition and pois...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C02F1/78
CPCB01J23/8892C02F1/725C02F1/78
Inventor 颜家保李超胡杰吴玲俞丹青陈美玲刘斯洋赵振悦贾彪
Owner WUHAN UNIV OF SCI & TECH
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