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

A kind of preparation method of honeycomb MN-based low-temperature denitration catalyst

A denitration catalyst and low temperature denitration technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Small shrinkage, beneficial to sulfur resistance and thermal stability, and prolonging life

Active Publication Date: 2019-11-15
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the amount of carbon black powder used for hole expansion is too large, the pore distribution of the final carrier will be dispersed, not concentrated, and the mechanical strength will be poor.
If the dosage is too small and the ideal reaming effect cannot be achieved

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
  • A kind of preparation method of honeycomb MN-based low-temperature denitration catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add the carbon black powder to the ethanol solution containing tetraethyl orthosilicate (where the solid-liquid mass ratio is 1:8, and the tetraethyl orthosilicate is SiO 2 The mass ratio of meter to carbon black powder is 2:1), under the condition of ultrasonic dispersion (the energy density of ultrasonic dispersion is 0.6kW / L, the temperature of ultrasonic dispersion is 40°C, and the time of ultrasonic dispersion is 1 hour), mix well, filter, The solid phase was dried at 50° C. for 2 hours, and then dried to obtain silicon source-modified carbon black powder;

[0030] (2) Add 54g of carbon black powder obtained in step (1) (based on the weight of carbon black powder), 600g of titanium sulfate, and 6g of nitric acid, then treat at 400°C in nitrogen for 3 hours, and roast at 500°C in air atmosphere for 5 hours. Obtain silicon-containing titania carrier;

[0031] (3) In the mixer, add 9 kg silicon-containing titanium oxide and 1kg A molecular sieve carrier, mix 0.4k...

Embodiment 2

[0034] (1) Add carbon black powder to ethanol solution containing tetraethyl orthosilicate (wherein the solid-liquid mass ratio is 1:12, and tetraethyl orthosilicate is SiO 2 The mass ratio of meter to carbon black powder is 3:1), under the condition of ultrasonic dispersion (the energy density of ultrasonic dispersion is 0.8kW / L, the temperature of ultrasonic dispersion is 60°C, and the time of ultrasonic dispersion is 1 hour), mix well, filter, The solid phase was dried at 60° C. for 2 hours, and then dried to obtain silicon source-modified carbon black powder;

[0035] (2) Add 120g of carbon black powder obtained in step (1) (based on the weight of carbon black powder), 900g of titanium sulfate, and 6g of nitric acid, then treat at 500°C in nitrogen for 3 hours, and roast at 500°C in air atmosphere for 5 hours. Obtain silicon-containing titania carrier;

[0036] (3) In the mixer, add 9.5 kg of silicon-containing titanium oxide and 0.5 kg of ZSM-5 molecular sieve carrier, 0...

Embodiment 3

[0039] (1) Add the carbon black powder to the ethanol solution containing tetraethyl orthosilicate (the solid-to-liquid mass ratio is 1:20, and the tetraethyl orthosilicate is SiO 2 The mass ratio of meter to carbon black powder is 4:1), under the condition of ultrasonic dispersion (the energy density of ultrasonic dispersion is 0.6kW / L, the temperature of ultrasonic dispersion is 40°C, and the time of ultrasonic dispersion is 1 hour), mix well, filter, The solid phase was dried at 50° C. for 2 hours, and then dried to obtain silicon source-modified carbon black powder;

[0040] (2) Add 150g of carbon black powder obtained in step (1) (by weight of carbon black powder), 800g of titanium sulfate, and 8g of nitric acid, then treat at 400°C in nitrogen for 3 hours, and roast at 500°C in air atmosphere for 5 hours. Obtain silicon-containing titania carrier;

[0041] (3) In the mixer, add 8.5 kg silicon-containing titanium oxide and 1.5 kg Y molecular sieve carrier, mix 0.2 kg 50%...

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 diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a honeycomb Mn-based low-temperature denitration catalyst, which includes the following contents: (1) Mix titanium dioxide, molecular sieve and a solution containing manganese nitrate, cerium nitrate and iron nitrate evenly, and then dry and roast at low temperature. , crushed into powdery material; (2) The powdery material obtained in step (1) is subjected to a denitration catalyst forming process to obtain a honeycomb Mn-based low-temperature denitration catalyst. The catalyst prepared by the method of the present invention has both large pore volume and strength, good molding performance, and is not easy to crack. The active component is manganese oxide in different valence states. The catalyst has excellent denitrification performance and good resistance to water vapor and SO2. 2 Poisoning ability.

Description

technical field [0001] The invention belongs to the technical field of environmental protection catalysts, and mainly relates to a preparation method of a honeycomb Mn-based low-temperature denitration catalytic material. Background technique [0002] At present, air pollution has become a very serious social problem. Among them, nitrogen oxide pollution will cause acid rain and other extreme weather, which has become an important part of air pollution. At present, the mainstream method for controlling nitrogen oxides is selective catalytic reduction (SCR), and SCR The investment in catalytic materials accounts for about 40% of the total investment, so the research and development of denitrification catalytic materials is very important. [0003] At present, the denitrification catalytic materials on the market are mainly vanadium-tungsten-titanium system, and the catalytic materials of vanadium-tungsten-titanium system are more suitable for the flue gas conditions of power ...

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 Patents(China)
IPC IPC(8): B01J29/48B01J29/16B01J29/78B01J35/04B01D53/86B01D53/56
CPCB01D53/8628B01J29/166B01J29/48B01J29/7807B01D2258/0283B01J35/56
Inventor 王宽岭王学海刘忠生陈高升程明珠刘淑鹤
Owner CHINA PETROLEUM & CHEM CORP
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