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

Method for improving water resistance and sulfur resistance of manganese-based low-temperature SCR denitration catalyst

A technology of SCR catalyst and denitrification catalyst, which is applied in the field of preparing water-resistant and sulfur-resistant catalysts, can solve problems such as difficult application, and achieve excellent water-resistant effects

Pending Publication Date: 2019-03-29
BEIJING UNIV OF TECH
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some catalyst systems have good water resistance, it is still difficult to apply to waste incineration and natural gas combustion flue gas denitrification treatment with a water content as high as 20-30% (v / v), especially when the catalyst operating temperature is lower than 200 ℃, its water resistance is more important

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 improving water resistance and sulfur resistance of manganese-based low-temperature SCR denitration catalyst
  • Method for improving water resistance and sulfur resistance of manganese-based low-temperature SCR denitration catalyst
  • Method for improving water resistance and sulfur resistance of manganese-based low-temperature SCR denitration catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: 0.25g PTFE is dispersed in the container that 200ml dehydrated alcohol is housed, stirs 2h, adds 4gMnO 2 , stirred at room temperature for 10 hours, filtered, dried in an oven at 120°C, and calcined in a muffle furnace at 200°C for 2 hours to prepare SCR water-resistant and sulfur-resistant catalysts.

Embodiment 2

[0017] Embodiment 2: according to the preparation method of embodiment 1, 0.5g PTFE is dispersed in the container that 200ml dehydrated alcohol is housed, stirs 2h, adds 4g MnO 2 , stirred at room temperature for 10 hours, filtered, dried in an oven at 120°C, and calcined in a muffle furnace at 200°C for 2 hours to prepare SCR water-resistant and sulfur-resistant catalysts.

Embodiment 3

[0018] Embodiment 3: according to the preparation method of embodiment 1, 0.75g PTFE is dispersed in the container that 200ml dehydrated alcohol is housed, stirs 2h, adds 4g MnO 2 , stirred at room temperature for 10 hours, filtered, dried in an oven at 120°C, and calcined in a muffle furnace at 200°C for 2 hours to prepare SCR water-resistant and sulfur-resistant catalysts.

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 relates to a method for improving water resistance and sulfur resistance of a manganese-based low-temperature SCR denitration catalyst, which belongs to the technical field of a water-resistant sulfur-resistant catalyst. The hydrophobic polytetrafluoroethylene is used as a coating or a dopant, is simply dispersed in a reaction vessel containing anhydrous ethanol, and then is mixed with the manganese-based catalyst, and steps of filtering, drying and calcining are carried out to obtain the manganese-based low-temperature SCR denitration catalyst. The method of the invention has the advantages of simple process, low cost, no toxicity and no pollution, and can prepare the manganese-based low-temperature SCR catalyst with excellent water and sulfur resistance.

Description

technical field [0001] The invention discloses a method for improving the water resistance and sulfur resistance of a manganese-based low-temperature SCR denitrification catalyst, which is particularly suitable for preparing a manganese-based low-temperature SCR denitration catalyst with excellent water resistance and sulfur resistance performance, and belongs to the technical field of preparing water-resistant and sulfur-resistant catalysts. Background technique [0002] At present, selective catalytic reduction (SCR) is the mainstream method for removing nitrogen oxides, and the denitrification efficiency can reach more than 90%. It is widely used and the technology is relatively mature. V 2 o 5 –WO 3 (MoO 3 ) / TiO 2 As a typical commercial SCR catalyst, the catalyst has been widely used in power plants, steel mills, glass kilns and other fields. However, since the working temperature of the traditional SCR is generally 300–400°C or even higher, SO will occur in the fl...

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): B01J31/32B01D53/86B01D53/56
CPCB01D53/8628B01J31/32B01D2251/2062B01D2258/0283
Inventor 何洪张宁强李伶聪宋丽云孙炎明程杰李世宁
Owner BEIJING UNIV OF 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