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

Denitration treatment method for sintering flue gas

A treatment method and technology of sintering flue gas, which is applied in the field of iron and steel smelting equipment, can solve the problems of short service life and high operating cost, and achieve the effect of reducing emissions

Pending Publication Date: 2021-08-17
QINHUANGDAO XINTE TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention discloses a denitrification treatment method for sintering flue gas, which solves the existing problems of short service life and high operating cost

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with embodiment, but is not limited to the content on the description.

[0016] As an embodiment of the present invention, a denitrification treatment method for sintering flue gas is disclosed, which includes the following steps: spraying materials on the surface of the ignited sintering material; igniting the sprayed material on the outside of the sintering material to generate combustion products, and The combustion product is introduced into the interior of the sintering material, and the combustion product reacts with the sintering material to form a reducing medium, and the reducing medium and the product after burning the sintering material undergo an oxidation-reduction reaction. Preferably, the material is sprayed above the sintered material, and the material is burned above the sintered material.

[0017] In the denitrification treatment method of sintering flue gas of the present invention, ...

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 discloses a denitration treatment method for sintering flue gas. The denitration treatment method comprises the following steps that a material is sprayed to the surface of an ignited sintering material; and the sprayed material is ignited outside the sintering material to generate a combustion product, the combustion product is introduced into the sintering material, the combustion product reacts with the sintering material to generate a reducing medium, and the reducing medium and a product generated after combustion of the sintering material are subjected to an oxidation-reduction reaction. According to the denitration treatment method for the sintering flue gas, the material is sprayed and added to the surface of the sintering material during sintering production, so that the combustion product of the material or the material enters the sintering material, the combustion product and components in the sintering material are subjected to the oxidation-reduction reaction, the combustion product is reduced into the reducing medium with reducibility, the reducing atmosphere in the sintering material is effectively adjusted, meanwhile, the reducing medium can reduce nitrogen oxide into nitrogen, and therefore the emission amount of the nitrogen oxide is reduced, the aim of denitration is achieved, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting equipment, in particular to a denitrification treatment method for sintering flue gas. Background technique [0002] So far, the flue gas treatment in the steel sintering process is basically terminal treatment. In addition to the activated carbon process, the simultaneous denitrification technology widely used at home and abroad is the SCR technology. Selective catalytic reduction denitrification is to use a catalyst in an oxygen-containing atmosphere to reduce NO in flue gas to N through ammonia. 2 and water. When the reaction temperature is 300-450°C, the denitrification rate can reach 70%-90%. This technology is mature and reliable, and is currently widely used in the world, especially in developed countries. However, the investment in the process equipment is large, the flue gas needs to be preheated, the catalyst is expensive and the service life is short, and the operatin...

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): F23J7/00
CPCF23J7/00
Inventor 高彦朱明
Owner QINHUANGDAO XINTE TECH CO LTD
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