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

A multi-pollutant synergistic emission reduction method in the sintering process

A sintering process, pollutant technology, applied in the direction of separation method, gas emission reduction, chemical instruments and methods, etc., can solve the problem of insufficient pollutant emission reduction effect, achieve the effect of inhibiting decomposition and reducing consumption

Active Publication Date: 2022-04-26
MAANSHAN IRON & STEEL CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the problem that the emission reduction effect of pollutants in the sintering process is still insufficient in the prior art. It intends to provide a method for synergistic emission reduction of multiple pollutants in the sintering process, which can effectively combine the emission rules of various pollutants in the sintering process, Ultimately realize the effect of multi-pollutant synergistic emission reduction in the sintering process

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 multi-pollutant synergistic emission reduction method in the sintering process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this embodiment, a multi-pollutant synergistic emission reduction method in the sintering process uses sintering back powder and emission reducer to distribute in the material layer of the sintering trolley to form a cloth mixed layer 112 inlaid with cloth, and reduces and decomposes NO through sintering back powder The combination of catalysis and emission reducing agent can realize the synergistic emission reduction of multiple pollutants in the sintering process. The emission reducing agent includes urea peroxide solution and polyaluminum chloride solution.

[0037] Specifically, the following steps are included:

[0038] S1. The base laying bin 103 spreads the bottom material on the sintering trolley, and then the mixing bin 109 spreads the mixed material on the sintering trolley to form a trolley cloth sintering material 113;

[0039] S2. The sintered powder return in the powder return chamber 104 is inlaid with the cloth and the mixed material to form a cloth m...

Embodiment 2

[0047] A multi-pollutant synergistic emission reduction method in the sintering process of this embodiment is basically the same as that of Embodiment 1, the difference is that in this embodiment, the bottom layer silo 103 distributes bottom layer material with a thickness of 35 mm on the sintering trolley through a funnel; The height position of the cloth mixing layer 112 is basically maintained at 15 mm below the corresponding position where the over-humidity zone in the sintering process is just eliminated; The spraying total amount of kind solution makes the sintering back powder water content on the powder feeding belt 105 reach 5%, and the cloth total amount of sintering back powder is 10% of the trolley cloth sintering material 113 total amount on the whole sintering trolley.

Embodiment 3

[0049] A multi-pollutant synergistic emission reduction method in the sintering process of this embodiment is basically the same as that of Embodiment 1, the difference is that in this embodiment, the bottom layer silo 103 spreads bottom layer material with a thickness of 45 mm on the sintering trolley through a funnel; The height position of the cloth mixing layer 112 is basically maintained at 20mm below the corresponding position where the over-humidity zone in the sintering process is just eliminated; The spraying total amount of kind solution makes the sintering back powder water content on the powder feeding belt 105 reach 4%, and the cloth total amount of sintering back powder is 8% of the trolley cloth sintering material 113 total amount on the whole sintering trolley.

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
Login to View More

Abstract

The invention discloses a multi-pollutant synergistic emission reduction method in a sintering process, which belongs to the field of sintering emission reduction. The present invention utilizes sintering back powder and emission reducing agent cloth into the material layer of sintering trolley to form a cloth mixing layer inlaid with cloth, through the combined action of sintering back powder on NO reduction and decomposition catalysis and emission reducing agent to realize multi-pollution in the sintering process The emission reduction agent includes urea peroxide solution and polyaluminum chloride solution. The invention overcomes the problem that the pollutant emission reduction effect in the sintering process of the prior art is still insufficient. In the sintering process, the lower part of the material layer after the over-wet zone is eliminated is inlaid with the sintering back powder, and at the same time, the emission reducing agent is distributed according to the concentration. Spray on the sintered powder, form a synergistic emission reduction layer in the material layer, and reduce SO 2 And dioxin to achieve effective emission reduction. At the same time, the use of sintering back powder has a strong self-catalytic promotion effect on the reduction and decomposition of NO, and finally realizes the effect of synergistic emission reduction of multiple pollutants in the sintering process.

Description

technical field [0001] The invention relates to the technical field of sintering emission reduction, in particular to a multi-pollutant synergistic emission reduction method in the sintering process. Background technique [0002] The sintering process is an important process in the production chain of iron and steel complexes. With the rapid development of the iron and steel industry, the demand for iron ore is increasing day by day. However, there are fewer and fewer rich ores that are directly put into the furnace for ironmaking, and a large amount of lean ore resources must be mined and used. Smelting lean ore directly into the furnace will deteriorate the production index of the blast furnace. The function of the sintering machine is to agglomerate the iron ore powder. The metallurgical properties of the sintered minerals are greatly improved, bringing huge economic benefits to blast furnace production. Moreover, the sintering method has strong adaptability to raw mat...

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): C22B1/16B01D53/70B01D53/86B01D53/50B01D53/56
CPCC22B1/16B01D53/8625B01D53/50B01D53/70Y02C20/10Y02P10/146
Inventor 戚义龙吴宏亮
Owner MAANSHAN IRON & STEEL 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