Method for recovering vanadium from waste FCC catalyst

A catalyst and conversion technology, applied in the direction of vanadium oxide, etc., can solve the problems of vanadium that has not been reported in the literature, and achieve the effect of low environmental pollution and high purity

Inactive Publication Date: 2013-10-02
岳阳鼎格云天环保科技有限公司
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no literature report on

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 vanadium from waste FCC catalyst

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] The present invention provides a method for recovering vanadium from waste FCC catalysts. The technical scheme of the present invention will be further explained through specific embodiments below:

[0019] A method for recovering vanadium from spent FCC catalyst, characterized in that: the method includes the following steps:

[0020] Step 1: Add hydrochloric acid to the FCC catalyst for leaching to remove the solid residues. The metal elements contained in it are converted into hydrochloric acid double salt leaching solution. The leaching temperature is 60℃, the leaching time is 6h, the hydrochloric acid concentration is 3mol / L, and the liquid-solid ratio is 6:1;

[0021] Step 2: Recovery of aluminum compounds in the leaching solution;

[0022] Step 3: The remaining FCC residue is acidified with hydrochloric acid and converted into metal chlorides. The P507 extract is extracted to separate nickel. The organic phase is a vanadium-rich rare earth chloride solution. The P507 ext...

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 technology for separating and recovering vanadium from waste FCC (fluid catalytic cracking) catalyst. The technology comprises the steps of leaching with 3mol/L hydrochloric acid, removing residues, recovering an aluminum compound, acidizing FCC residues with hydrochloric acid, converting the FCC residues into metal chloride, extracting with a P507 extract to obtain a rare earth chloride solution with an organic phase rich in V, separating purified vanadium in a vanadate anion form by an ion-exchange method, oxidizing to produce pentavalent vanadium with hydrogen peroxide at 60 DEG C, adding ammonia water to adjust a pH (Potential of Hydrogen) value to 1.9-2.2, adding ammonium sulfate, stirring for 3h at 90-95 DEG C to precipitate out red vanadium, and pyrolyzing and baking at 500-550 DEG C to generate V2O5. The method can recover vanadium metal from the FCC catalyst, and is easy and simple to operate, and the product purity of recovered vanadium pentoxide is high, and reaches 97%. The quality reaches the national standard GB 3283-87. The method is applicable to recovering vanadium from the FCC catalyst industrially and massively.

Description

technical field [0001] The invention relates to a method for recovering vanadium from waste FCC catalysts, and belongs to the field of waste metal regeneration and utilization. Background technique [0002] FCC catalyst, namely petroleum catalytic cracking catalyst, is a very important catalyst in the petroleum refining industry. The spent FCC catalyst contains a certain amount of useful substances such as vanadium and nickel, which is a very important strategic resource. If it is not handled properly, it will not only cause environmental pollution, but also cause the loss of useful metals in the spent catalyst, resulting in a waste of resources. [0003] The techniques for extracting vanadium from spent vanadium catalysts mainly include solvent extraction and ion exchange, both of which started earlier abroad. There are also many studies on extraction methods in China, and there are many extraction agents for vanadium, but their industrial application is limited. The adv...

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
IPC IPC(8): C01G31/02
Inventor 廖乐王小云
Owner 岳阳鼎格云天环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap