A method and device for controlling nitrogen oxide emissions

A nitrogen oxide and emission control technology, applied in the metallurgical field, can solve the problems of no NOx control, high cost, expensive desulfurization and denitrification, etc., and achieve the effects of inhibiting the production of nitrogen oxides, low cost, and content reduction

Active Publication Date: 2020-03-17
ZHONGYE-CHANGTIAN INT ENG CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of realizing the present invention, the inventor found that in the prior art, NOx can be treated through the desulfurization and denitrification device at the end of the sintering system, but the cost of desulfurization and denitrification is quite expensive and the cost is very high
There is not yet an effective method to control NOx emissions in the prior art

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 method and device for controlling nitrogen oxide emissions
  • A method and device for controlling nitrogen oxide emissions
  • A method and device for controlling nitrogen oxide emissions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0065] figure 1 is a schematic diagram of a sintering trolley shown according to an exemplary embodiment of the present invention, in figure 1 In the mixture trough, the material to be sintered is distributed on the sintering trolley through the round roller and the nine-roll distribution machine. The material is driven by the sintering trolley to move and burn from left to right in the figure....

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 embodiment of the invention provides a nitrogen oxide emission control method and device. The method comprises the steps of obtaining the current nitrogen oxide emission state; obtaining the current alkalinity state of a material; and according to the current nitrogen oxide emission state, the current alkalinity state of the material and a preset strategy, adjusting the matching ratio of CaO and the matching ratio of CaCO3 in the material. According to the nitrogen oxide emission control method and device, the matching ratio of the CaO and the matching ratio of the CaCO3 in the material are adjusted according to the current nitrogen oxide emission state, the current alkalinity state of the material and the preset strategy, so that on the basis that the alkalinity of sintered ore is guaranteed, the content of the CaCO3 is reduced by changing the component ratio of solvent, and in other words, the content of the CaO is properly increased; generation of nitrogen oxide can be inhibited; the cost is low, and in addition, chemical properties of the sintered ore are not affected; and quality of the sintered ore is guaranteed.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method and device for controlling nitrogen oxide emissions. Background technique [0002] With the rapid development of modern industry, the scale of steel production is getting larger and larger, and energy consumption is also increasing. Energy conservation and environmental protection have become important indicators in steel production. In iron and steel production, iron-containing raw material ores need to be sintered before entering the blast furnace for smelting. In the sintering process, various powdery iron-containing raw materials are first mixed with appropriate amount of fuel and flux, and an appropriate amount of water is added to form a mixed material after mixing and pelletizing, and then the mixed material is passed through a feeder and a distributing machine Disperse evenly on the sintering trolley, ignite and roast at high temperature to make the mixed 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): F27D19/00
CPCF27D19/00F27D2019/0012
Inventor 李宗平孙英曾辉谌玉婷
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap