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

A kind of thin-wall flat type low-temperature anti-sulfur SCR denitrification catalyst and preparation method thereof

A denitration catalyst, a flat-plate technology, applied in the field of environmental protection technology and denitration catalysis, can solve problems such as poor low temperature activity and ammonium sulfate poisoning, and achieve the effects of overcoming poor mechanical properties, saving usage, and improving activity

Active Publication Date: 2021-03-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical problem that the SCR denitrification catalyst in the prior art has poor low-temperature activity and is prone to ammonium sulfate poisoning. It has excellent anti-sulfur poisoning performance and stable low-temperature denitrification performance in atmospheric environment

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 thin-wall flat type low-temperature anti-sulfur SCR denitrification catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] In order to better realize the above-mentioned technical solution, the present invention also provides a method for preparing a thin-walled plate-type low-temperature sulfur-resistant SCR denitration catalyst, the specific steps including:

[0042] S1. Preparation of TiO 2 -Nb 2 o 5 -Fe 2 o 3 composite nanocarrier

[0043] Prepare titanium tetrachloride solution with cold water, add monoglyceride stearate and stir evenly, adjust the pH value to 6.5-7.5 with ammonia water, then heat the solution to 50°C to obtain a uniform white emulsion; then slowly add five Niobium chloride ethanol solution and ferric chloride solution, adjust the pH value to 8-9 with ammonia solution, heat the solution to 80°C, and keep stirring for 2-4h; wash the hydrolysis precipitate with ethanol and deionized water in turn, and finally roast Get TiO 2 -Nb 2 o 5 -Fe 2 o 3 Composite nanocarriers;

[0044] S2. Preparation of catalyst material

[0045] The prepared ammonium metavanadate, a...

Embodiment 1

[0053] This example provides a thin-walled flat-plate low-temperature sulfur-resistant SCR denitration catalyst and its preparation method. The specific steps include:

[0054] (1) Preparation of TiO 2 -Nb 2 o 5 -Fe 2 o 3 composite nanocarrier

[0055] Dissolve 2015.35g of titanium tetrachloride in 21.25L of water, 101.64g of niobium pentachloride in 276mL of ethanol, and 202.76g of ferric chloride in 417mL of water to obtain titanium solution, niobium solution and iron solution; add 38.1g Stearic acid monoglyceride, use ammonia water to adjust the pH of the solution to 6.5, and then heat the solution to 50°C to hydrolyze the titanium solution to obtain a uniform white emulsion; add niobium solution and iron solution to the emulsion in turn to adjust the pH of the solution to 8 , heated the solution to 80°C and kept stirring for 2h; filtered to obtain the hydrolyzed precipitate, washed with ethanol and deionized water, and roasted at 500°C for 10h to obtain 2 o 5 and 10...

Embodiment 2

[0069] Embodiment 2 also describes a thin-walled flat plate low-temperature anti-sulfur SCR denitration catalyst and its preparation method. The specific steps include:

[0070] (1) Preparation of TiO 2 -Nb 2 o 5 -Fe 2 o 3 composite nanocarrier

[0071] Dissolve 2015.35g of titanium tetrachloride in 7.08L of water, 203.28g of niobium pentachloride in 555mL of ethanol, and 101.38g of ferric chloride in 208mL of water to obtain titanium solution, niobium solution and iron solution; add 114.3g Stearic acid monoglyceride, use ammonia water to adjust the pH of the solution to 7.5, and then heat the solution to 50°C to hydrolyze the titanium solution to obtain a uniform white emulsion; add niobium solution and iron solution to the emulsion in turn to adjust the pH of the solution to 9 , heated the solution to 80°C and kept stirring for 4h; filtered to obtain the hydrolyzed precipitate, washed with ethanol and deionized water, and roasted at 650°C for 3h to obtain 2 o 5 and 5%...

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
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Embodiments of the present invention provide a thin-walled flat plate type low-temperature sulfur-resistant SCR denitration catalyst and a preparation method thereof. The catalyst is TiO 2 ‑Nb 2 O 5 ‑Fe 2 O 3 Composite nanooxide as carrier, V 2 O 5 is the active ingredient, MoO 3 and MnSO 4 It is an active additive, adding organic and inorganic structural additives, and is made through multi-stage rolling, drying and other steps. The catalyst of the present invention improves the low-temperature denitrification performance and resistance to sulfur poisoning by developing a carrier that accelerates the denitrification reaction and promotes the decomposition of ammonium sulfate salt, optimizing active ingredients and active additives, optimizing molding additives and preparation processes, and enables the catalyst to It has excellent denitrification activity and stability in the temperature range of 150-250℃. The plate thickness of 0.35-0.40mm enables the catalyst to have a low sulfur dioxide oxidation rate and strong resistance to sulfur poisoning, greatly reducing the cost of raw materials required for production and saving the operating cost of the SCR denitration system.

Description

technical field [0001] The invention belongs to the field of environmental protection technology and denitrification catalysis, and in particular relates to a thin-walled plate type low-temperature sulfur-resistant SCR denitrification catalyst. The invention also provides a preparation method of the thin-wall flat-plate type low-temperature sulfur-resistant SCR denitration catalyst. Background technique [0002] As the mainstream flue gas denitrification technology, SCR technology has been widely used in the field of domestic thermal power flue gas denitrification. However, with the increasingly stringent environmental protection requirements, in addition to the thermal power industry, many industries such as cement, glass, and metallurgy have gradually begun to use SCR denitrification catalysts to meet the NOx emission standards of their respective industries. [0003] As the demand for SCR denitrification catalysts becomes wider and wider, more complex and changeable flue...

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): B01J23/847B01J27/053B01J35/02B01J35/10B01J37/08B01J37/02B01D53/86B01D53/56B01J35/00
CPCB01J37/0009B01J23/8474B01J27/053B01J37/0225B01J37/0236B01J37/0018B01J23/002B01D53/8628B01J2523/00B01J35/00B01J35/30B01J35/60B01J2523/47B01J2523/56B01J2523/842
Inventor 陆强吴洋文郑树周新越吴亚昌徐明新
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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