A method for synthesizing naa type molecular sieve material from catalytic cracking waste catalyst

A waste catalyst and catalytic cracking technology, which is applied in the field of resource utilization of solid waste, can solve the problems of unknown solidification effect of heavy metals such as nickel, various types of equipment, and complex composition of raw and auxiliary materials, so as to achieve resource utilization and simple material composition , the effect of easing the reaction conditions

Active Publication Date: 2021-11-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composition of raw and auxiliary materials in this method is relatively complicated, and many types of equipment are required, and the curing effect of heavy metals such as nickel in the product is unknown.

Method used

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  • A method for synthesizing naa type molecular sieve material from catalytic cracking waste catalyst
  • A method for synthesizing naa type molecular sieve material from catalytic cracking waste catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) The catalytic cracking waste catalyst is crushed, and the particle size of the catalytic cracking waste catalyst after crushing is 20-50 microns, 100 g of catalytic cracking scrap catalyst powder, 100g sodium carbonate and sodium silicate, high temperature roast 2 In the hour, the calcination temperature was 760 ° C, cooled to room temperature to obtain a solid melt;

[0029] (2) Put the splitter obtained by step (1) in a closed container, hot crystallization at a temperature of 95 ° C for 8 hours;

[0030] (3) The product obtained in step (2) is filtered, and the resulting filter material is added to 500 ml of 3.2 mol / L of sodium hydroxide solution, and stirred at room temperature for 1 hour; then add 77g aluminum Sodium sodium powder, after stirring for 1 hour, stand in an 18 hours;

[0031] (4) The aging mixture obtained by step (3) is heated to 80 ° C, and the temperature is stirred for 1.5 hours; the product is centrifuged, and the deionized water is flusted into...

Embodiment 2

[0034] (1) The catalytic cracking waste catalyst is crushed, and the particle size of the catalytic cracking waste catalyst after crushing is 20-50 microns, and 100 g of catalytic cracking scrap catalyst powder, 100 g sodium carbonate and 2g sodium silicate, high temperature roast 1 When the hour, the calcination temperature was 600 ° C, cooled to room temperature to obtain a solid melt;

[0035] (2) Place the splitter obtained by step (1) in a closed container, water crystallization at a temperature of 80 ° C for 3 hours;

[0036] (3) The product obtained in step (2) is filtered, and the resulting filter material is added to a sodium hydroxide solution of 500 ml of 3 mol / L, stirring at room temperature for 2 hours; then add 38.5 g of aluminum acid Sodium powder, continued to stir for 2 hours, static indulge in 24 hours;

[0037] (4) The aging mixture obtained by step (3) is heated to 60 ° C, and the temperature is stirred for 1 hour; the product is centrifuged, and the deionize...

Embodiment 3

[0039] (1) The catalytic cracking waste catalyst is crushed, and the particle diameter of the catalytic cracking waste catalyst after crushing is 20-50 microns, and 100 g of catalytic cracking scrap catalyst powder, 100 g sodium carbonate and 17.4 g of sodium silicate, high temperature calcination 3 hours, the calcination temperature was 900 ° C, cooled to room temperature to obtain a solid melt;

[0040] (2) Place the split body obtained by step (1) in a closed container, hot crystallization at a temperature of 110 ° C for 12 hours;

[0041] (3) The product obtained in step (2) is filtered, and the resulting filter material is added to 500 ml of 4 mol / L of sodium hydroxide solution, and stirred at room temperature for 2 hours; then 54.6 g of aluminum acid Sodium powder, continued to stir for 1 hour, stand for 12 hours;

[0042] (4) The aging mixture obtained by step (3) is heated to 90 ° C, and the temperature is stirred for 2 hours; the product is centrifuged, and the deionize...

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Abstract

The invention provides a method for synthesizing NaA-type molecular sieve materials from catalytic cracking waste catalysts, using catalytic cracking waste catalysts as raw materials, adding sodium carbonate and sodium silicate, and roasting at high temperature to obtain a solid solution; Hydrothermal crystallization, filter the hydrothermal crystallization product, add the filter material to a certain concentration of sodium hydroxide solution, stir for a period of time, then add a certain amount of sodium aluminate powder, fully stir and leave to age; Stir the aged mixture at a certain temperature, centrifuge the reaction product, rinse with deionized water, and dry to obtain NaA molecular sieve material. The composition of raw and auxiliary materials is simple, the reaction conditions are moderate, and the cost is low. The prepared NaA molecular sieve has a high content of materials and has a good solidification and stabilization effect on heavy metals such as nickel, and realizes resource utilization while harmlessly treating waste catalysts.

Description

Technical field [0001] The present invention relates to the field of solid waste resource utilization, and more particularly to a method of catalytic cracking waste catalyst synthesis NaA type molecular sieve material. Background technique [0002] In my country, the catalytic cracking catalyst is from 85% of the total amount of refining catalyst, and the catalytic cracking catalyst has been used after repeated regeneration of the device, and the partial catalyst is destroyed by the molecular sieve structure or due to the adsorption of excess heavy metals and carbon. It will be discharged without reversible, which is discarded catalytic cracking waste catalysts are included in the National Hazardous Waste List, which belongs to hazardous waste. In my country's annual catalytic cracking scrap catalyst is about 100,000 tons, in order to prevent contaminated environments, it must be treated with harmless treatment or resource utilization. Currently used processing treatment methods ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/14
CPCC01B39/14C01P2002/72
Inventor 房师平张宏哲汪皕喆张志远
Owner CHINA PETROLEUM & CHEM CORP
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