SCR (silicon controlled rectifier) catalyst slurry and preparation method and application thereof

A technology of SCR catalyst and slurry, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve the problems of reduced production efficiency and excessive air-drying speed

Active Publication Date: 2018-11-27
BAOTOU RES INST OF RARE EARTHS +1
View PDF13 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method needs to use aluminum sol and silica sol to prepare composite colloid, and then prepare coating slurry, resulting in a significant reduction in production

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
  • SCR (silicon controlled rectifier) catalyst slurry and preparation method and application thereof
  • SCR (silicon controlled rectifier) catalyst slurry and preparation method and application thereof
  • SCR (silicon controlled rectifier) catalyst slurry and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062]

[0063] The raw materials containing SCR catalyst, cellulose ether, pore forming agent, aluminum sol, silica sol, defoamer and water are mixed to obtain the SCR catalyst slurry. The preparation method of SCR catalyst slurry of the present invention comprises following specific steps:

[0064] (1) Aluminum sol, silica sol, defoamer and water are mixed uniformly to form a mixed solution;

[0065] (2) Mix the SCR catalyst, cellulose ether and pore-forming agent evenly, then add them into the mixed solution under continuous stirring, and continue stirring for 1-4 hours after the addition, to obtain the SCR catalyst slurry.

[0066] In some embodiments, aluminum sol, silica sol, defoamer and water are mixed uniformly to obtain a mixed solution; SCR catalyst, ammonium bicarbonate and cellulose ether are mixed uniformly, and then added to the In the mixed solution, after the addition is completed, the stirring is continued for 1-3 hours, preferably 1.5-2.5 hours, to obtain...

preparation example 1

[0085] The preparation of preparation example 1-cerium glutamate

[0086] Add 1.335 g of glutamic acid to 25 mL of H 2 O, heated to 65°C, stirred evenly, then added 2.67g of cerium carbonate and stirred for 2h.

preparation example 2

[0087] The preparation of preparation example 2-cerium gluconate

[0088] Add 1.98 g of glucose and 2.67 g of cerium carbonate to 25 mL of H 2 O, heated to 60 ° C, stirred for 1 h.

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to view more

Abstract

The invention discloses SCR (silicon controlled rectifier) catalyst slurry and a preparation method and application thereof. The SCR catalyst slurry comprises, by weight, 100 parts of a SCR catalyst,0.2-4 parts of cellulose ether, 0.05-5 parts of a form-forming agent, 5-40 parts of alumina sol, 3-20 parts of silica sol, 0.01-5 parts of a deforming agent and 50-150 parts of water. By the arrangement, the SCR catalyst slurry with obvious decreasing of air-drying speed and obvious increasing of viscosity can be obtained.

Description

technical field [0001] The invention relates to an SCR catalyst slurry and its preparation method and application, in particular to an SCR catalyst slurry used for denitrification of motor vehicle tail gas and its preparation method and application. Background technique [0002] Exhaust gas emitted by motor vehicles contains a large amount of nitrogen oxides NOx, which causes air pollution. Selective Catalytic Reduction (SCR) is commonly used in the treatment of nitrogen oxides. Under the action of SCR catalyst, using reducing agent (such as NH 3 , liquid ammonia, urea, etc.) to selectively react with NOx in the flue gas to generate non-polluting N 2 and H 2 O. Among them, the SCR catalyst is the key. [0003] CN102698736A discloses a technology for preparing catalyst slurry by mixing titanium tungsten powder, ammonium metavanadate, soluble rare earth salt, soluble zirconium salt, etc. CN101912775A discloses a method for directly preparing catalyst slurry by using tita...

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): B01J23/30B01J23/888B01J35/02B01J35/04B01J35/10B01J37/02B01J37/34B01D53/94B01D53/56
CPCB01D53/9418B01D2258/01B01J23/30B01J23/888B01J23/8885B01J35/023B01J35/04B01J35/1019B01J37/0217B01J37/0219B01J37/342
Inventor 赵文怡王艳李兆强张丞王荣樊蓉蓉郭欣王雨宋立华宋燕海李园丁智勇宋静
Owner BAOTOU RES INST OF RARE EARTHS
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