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

Preparation method of rare-earth element catalytic cracking dual-metal passivator

A technology of catalytic cracking and rare earth elements, applied in catalyst protection, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor stability, large dosage, high toxicity, etc., and achieve the effect of optimizing the production process and facilitating adjustment at any time

Inactive Publication Date: 2014-10-08
JIANGSU JIAHUA ADVANCED MATERIALS TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional bimetallic passivators are antimony-tin bimetallic passivators, which have high toxicity, poor stability and large dosage

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] B. Preparation of mother liquor A: first, add 6~20kg of pH regulator, 10~35kg of organic acid, and 20~80kg of organic amine into a 500kg reaction flask, and stir for 10 minutes; then add 80~120kg of antimony powder, and continue to increase the temperature by 80 Add 100~170kg of oxidizing agent dropwise at ~100℃, condense and reflux for 1-2h; finally add 15~35kg of stabilizer, stir and cool down to room temperature, and discharge to obtain mother liquor A;

[0023] C. Preparation of mother liquor B: first, add 100~150kg of rare earth powder, 100~140kg of organic acid, and 100~200kg of deionized water into a 500L reactor, and stir for 10 minutes; then heat to 80-100°C and start adding organic amine 70 ~95kg, react for 1~2 hours, add 5~10kg of stabilizer; finally cool to room temperature, and discharge to obtain mother liquor B.

[0024] Wherein in step B, the pH regulator is one or a mixture of diethylamine, triethylamine, and ethylenediamine. The organic acid is one or...

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 preparation method of a rare-earth element catalytic cracking dual-metal passivator. The rare-earth element catalytic cracking dual-metal passivator is characterized in that main components comprise 300kg-600kg of mother liquor A, 50kg-150kg of mother liquor B and 5kg-20kg of pH regulator. The preparation method is characterized by mainly comprising the steps of adding deionized water and then stirring the components for 30-60 minutes. According to the rare-earth element catalytic cracking dual-metal passivator, the selectivity of a stabilizer of a system is improved in the process of improving the stability of the system, the selectivity of the pH regulator is improved in the process of improving the pH value of a product, and the selectivity of rare-earth powder is improved during the replacement of a conventional antimony-tin dual-metal passivator; a finished product can be conveniently adjusted at any time by virtue of preparation of an intermediate of the mother liquor A and the mother liquor B, and a production process is optimized.

Description

technical field [0001] The invention relates to a catalytic cracking metal passivator, in particular to a preparation method of a rare earth element catalytic cracking double metal passivator. [0002] Background technique [0003] In the process of catalytic cracking, especially in the process of catalytic cracking with heavy oil as raw material, the raw oil contains heavy metals, such as nickel, copper, iron and other heavy metal ash deposited on the surface of the catalyst, resulting in catalyst poisoning and deactivation and selectivity decline, thus The yield of light oil decreases, and the yield of hydrogen and coke increases. In view of the metal pollution of catalytic cracking catalysts, in addition to demetallization pretreatment of raw materials and selection of catalysts with strong metal resistance, the industry can also improve the properties of catalysts by increasing the replacement rate of catalysts, and use passivators to inhibit The poisonous effect of th...

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): B01J33/00
Inventor 蒋明
Owner JIANGSU JIAHUA ADVANCED MATERIALS TECH
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