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

Catalyst for flue gas denitration, and preparation method and application thereof

A denitrification catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., to achieve the effects of easy acquisition, simple preparation process, and low preparation cost

Inactive Publication Date: 2018-12-18
SHANGHAI UNIVERSITY OF ELECTRIC POWER
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a catalyst for flue gas denitrification and its preparation method and application in order to overcome the defects of the above-mentioned prior art, and solve the technical problem that the catalyst can maintain high activity in the process of low temperature denitrification

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
  • Catalyst for flue gas denitration, and preparation method and application thereof
  • Catalyst for flue gas denitration, and preparation method and application thereof
  • Catalyst for flue gas denitration, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A Catalyst Fe-Eu / TiO for Flue Gas Denitrification 2 , according to the molar ratio of the contained active component and carrier is 0.15:1. The preparation method of the catalyst comprises the following steps:

[0032] (1) Dissolve 0.002 mol of europium nitrate, 0.015 mol of ferric nitrate, and 0.1 mol of sulfuric acid phthalein in deionized water, and stir at room temperature for 5-10 minutes; a mixed solution is obtained.

[0033] (2) Pour the ammonia water into the mixed solution until the pH value of the solution reaches 10 to form a precipitate, stir for 5-10 minutes and then let stand. The supernatant was decanted several times and fresh deionized water was added. until the PH value reaches 7;

[0034] (3) Filter the precipitate, dry it in an oven at 100°C for 24 hours, then move it to a muffle furnace, and calcinate it at 500°C for 4 hours to obtain black particles, which are denitration catalysts.

Embodiment 2

[0036] (1) Dissolve 0.1mol titanium sulfate and 0.015mol ferric nitrate in deionized water and stir for 5-10min to form a mixed solution;

[0037] (2) Pour the ammonia water into the mixed solution until the pH value of the solution reaches 10 to form a precipitate, stir for 5-10 minutes and then let stand. The supernatant was decanted several times and fresh deionized water was added. until the PH value reaches 7;

[0038] (3) Filter the precipitate, dry it in an oven at 100°C for 24 hours, then move it to a muffle furnace, and calcinate it at 500°C for 4 hours to obtain black particles, which are denitration catalysts.

Embodiment 3

[0040] A catalyst for flue gas denitrification, consisting of a carrier, an active component and an auxiliary agent, wherein the carrier used is titanium dioxide, the active component is iron oxide, the auxiliary agent is europium oxide, iron element, europium element, titanium The molar ratio of elements is 0.13:0.01:1.

[0041] The preparation method of the catalyst for flue gas denitrification adopts the following steps:

[0042] (1) Eu(NO 3 )3 ·6H 2 O, Fe(NO 3 ) 3 , Ti(SO 4 ) 2 Dissolve in deionized water according to the formula, and stir at room temperature to obtain a mixed solution;

[0043] (2) After pouring ammonia water into the mixed solution until the pH value of the solution reaches 10, a precipitate is formed, stirred and left standing, pouring off the supernatant liquid several times and adding new deionized water until the pH value reaches 7;

[0044] (3) Filter the precipitate, dry it in an oven at 100°C for 24 hours, and then move it to a muffle furna...

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 catalyst for flue gas denitration, and a preparation method and an application thereof. The catalyst is composed of a carrier, an active component and an assistant, the carrier is titanium dioxide, the active component is iron element, the assistant is europium element, and a molar ratio of the iron element to the europium element to the titanium element is 0.15:0.02:1.The preparation method of the catalyst is mainly a co-precipitation method. The finally prepared catalyst can treat nitrogen oxides in exhaust gas discharged from a gas turbine for power generation and a coal-fired boiler, can significantly improve the activity and catalytic ability of low-temperature denitration, makes the nitrogen oxide removal rate at 250 DEG C achieve 90% or above, has great industrial application values, and can be widely used for the NH3-selective catalytic reduction of nitrogen oxides.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a catalyst for flue gas denitrification, a preparation method and application thereof. Background technique [0002] NOx is one of the important air pollutants emitted by coal-fired power plants, and is an important cause of acid rain and photochemical smog. Since the type of acid rain in my country has changed from sulfuric acid acid rain to nitric acid and sulfuric acid mixed acid rain, it has caused great harm to the environment and human health. Therefore, the control of NOx has become the focus of the work of air pollutant control. [0003] Take NH 3 Selective catalytic reduction denitration technology (SCR denitrification technology) as a reducing agent is an effective means to control NOx pollution in thermal power plants. The method is usually in the range of 300-400°C, V 2 o 5 +WO 3 (MoO 3 ) / TiO 2 as a catalyst to remove NOx. Problems still remain, s...

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): B01J23/83B01D53/86B01D53/90B01D53/56
CPCB01D53/8628B01D53/90B01D2258/0283B01J23/83
Inventor 郭瑞堂刘健刘帅伟孙晓李明圆孙鹏刘树明王忠一秦浩柳星宇施旭潘卫国
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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