Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for recovering aluminum oxide from waste FCC catalyst

A catalyst and alumina technology, applied in alumina/aluminum hydroxide and other directions, can solve problems such as increasing the difficulty of aluminum recycling

Inactive Publication Date: 2013-10-02
湖南鼎格云天环保科技股份有限公司
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The presence of these metal elements makes aluminum recycling more difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for recovering aluminum oxide from waste FCC catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention provides a kind of method that reclaims alumina from spent FCC catalyst, further illustrate technical scheme of the present invention through specific implementation below:

[0020] Step 1: Use hydrochloric acid with a mass concentration of 4.04% to convert the FCC catalyst into a hydrochloric acid double salt leaching solution under the conditions of 60°C, a mechanical stirring speed of 300 r / min, and a leaching time of 6 hours;

[0021] Step 2: Add a sodium hydroxide solution with a concentration of 1mol / L to the leaching solution to convert metal ions into their hydroxide precipitates, while only Al(OH)3 can react with strong alkali in the metal hydroxide precipitates in FCC Generate water-soluble sodium metaaluminate;

[0022] Step 3: separating the water-soluble sodium metaaluminate from the waste FCC by filtering;

[0023] Step 4: Boil the obtained sodium metaaluminate solution, add 40% ammonium bicarbonate solution under the condition of me...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for recovering aluminum oxide from waste FCC ((fluid catalytic cracking) catalyst. The method comprises the steps of converting a metal element of the FCC catalyst into a hydrochloride leaching solution with hydrochloric acid, adding excess sodium hydroxide solution into the leaching solution to allow other metal ions to produce metal ion hydroxide for precipitation, filtering to obtain a sodium metaaluminate solution, boiling in weak base, decompressing and filtering to obtain hydrated aluminum oxide when the solution is hot, and roasting to obtain aluminum oxide in an air atmosphere, wherein aluminum exists in the solution as sodium metaaluminate. The method is simple, environment-friendly and efficient, and can allow the recovery rate of aluminum oxide from the leaching solution of the waste FCC catalyst to be greater than or equal to 99%, the foreign ion content of roasted aluminum oxide is low, and the purity of aluminum oxide is greater than or equal to 97%.

Description

technical field [0001] The invention relates to a method for recovering alumina from waste FCC catalysts, and belongs to the field of waste metal regeneration and utilization. Background technique [0002] FCC catalyst is heavy oil catalytic cracking catalyst, widely used in petrochemical industry. With the rapid development of my country's oil refining industry, the consumption of FCC catalysts is also increasing. However, after the FCC catalysts are used for a long time, due to the deposition of coke in the pores of the catalyst and the adsorption of metals such as vanadium in the raw materials on the surface of the catalyst, the catalyst Poisoning, resulting in a large amount of spent catalyst emissions every year. In order to save resources and protect the ecological environment, it is necessary to recycle the components in the spent FCC catalyst, and recycling aluminum is a very important aspect. [0003] Aluminum is a multi-purpose strategic metal, and my country is a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02
Inventor 廖乐王小云
Owner 湖南鼎格云天环保科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com