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

Surface-modified high-activity low-temperature denitration active coke and preparation method thereof

A surface modification, nitrate-activated coke technology, applied in catalyst activation/preparation, separation methods, chemical instruments and methods, etc., can solve problems such as low nitrogen oxide removal rate, achieve low-temperature denitrification, and improve denitrification reaction efficiency. , the effect of high denitration activity

Active Publication Date: 2020-05-05
SICHUAN UNIV
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a surface-modified high-activity low-temperature denitrification activated coke and its preparation method, so as to improve the nitrogen oxides existing in the existing denitrification activated coke products mainly in the form of adsorption. The problem of low removal rate is to improve the removal rate of activated coke products to nitrogen oxides through the dual functions of chemical catalysis and adsorption denitrification, so as to better meet the needs 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
  • Surface-modified high-activity low-temperature denitration active coke and preparation method thereof
  • Surface-modified high-activity low-temperature denitration active coke and preparation method thereof
  • Surface-modified high-activity low-temperature denitration active coke and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this example, a series of surface-modified high-activity low-temperature denitrification active cokes with different additions of pyrolusite powder were prepared, and the steps were as follows:

[0036] (1) Bituminous coal and anthracite are crushed respectively, pulverized and passed through a 100-mesh sieve to obtain bituminous coal powder and anthracite powder, and pyrolusite (mainly composed of MnO 2 , the manganese content is 36.7%) crushing, grinding and passing through a 100-mesh sieve to obtain pyrolusite powder.

[0037] Fully mix the bituminous coal powder and anthracite powder to obtain mixed coal powder, the mass percentages of bituminous coal and anthracite in the mixed coal powder are 70% and 30% respectively; fully mix the mixed coal powder and pyrolusite powder, and then add Water and coal tar are fully kneaded to obtain a mixture, the addition of water and coal tar is respectively 10% and 42% of the mass of mixed coal powder, and the resulting mixtur...

Embodiment 2

[0051] In this example, a series of surface-modified high-activity low-temperature denitrification activated cokes were prepared by impregnating equal volumes with dilute sulfuric acid of different concentrations. The steps are as follows:

[0052] (1) Bituminous coal and anthracite are crushed respectively, pulverized and passed through a 100-mesh sieve to obtain bituminous coal powder and anthracite powder, and pyrolusite (mainly composed of MnO 2 , the manganese content is 36.7%) crushing, grinding and passing through a 100-mesh sieve to obtain pyrolusite powder.

[0053] Fully mix the bituminous coal powder and anthracite powder to obtain mixed coal powder, the mass percentages of bituminous coal and anthracite in the mixed coal powder are 70% and 30% respectively; fully mix the mixed coal powder and pyrolusite powder, and then add Water and coal tar are fully kneaded to obtain a mixture, and the additions of pyrolusite powder, water and coal tar are respectively 8%, 10% a...

Embodiment 3

[0063] In this example, the preparation of surface-modified high-activity low-temperature denitrification activated coke is as follows:

[0064] (1) Bituminous coal and anthracite are crushed respectively, pulverized and passed through a 100-mesh sieve to obtain bituminous coal powder and anthracite powder, and manganese oxide ore (the main form of manganese has MnO 2 , Mn 2 o 3 and Mn 3 o 4 , with a total manganese content of 34.6%), crushed, pulverized and passed through a 100-mesh sieve to obtain manganese oxide ore powder.

[0065] Fully mix the bituminous coal powder and anthracite powder to obtain mixed coal powder, the mass percentages of bituminous coal and anthracite in the mixed coal powder are 70% and 30% respectively; fully mix the mixed coal powder and manganese oxide ore powder, and then add Water and coal tar are fully kneaded to obtain a mixture, and the additions of manganese oxide ore powder, water and coal tar are respectively 10%, 10% and 40% of the mas...

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 provides surface-modified high-activity low-temperature denitration active coke and a preparation method thereof. The denitration active coke is activated and surface-modified, the maincomponent of the denitration active coke is a forming material of carbonized coal and natural manganese ore, and sulfur-containing functional groups and sulfate which mainly provide acidic adsorptionsites are formed on the surface of the forming material through surface modification. According to the invention, the problem of low nitrogen oxide removal rate of an existing denitration active cokeproduct in an adsorption-dominated denitration mode can be solved, the nitrogen oxide removal rate of the active coke product is improved through the dual effects of chemical catalysis and adsorptiondenitration, and the requirement of low-temperature denitration can be better met.

Description

technical field [0001] The invention belongs to the field of low-temperature denitration catalysts, and relates to a surface-modified high-activity low-temperature denitration active coke and a preparation method thereof. Background technique [0002] Ultra-clean emissions from the power industry have been basically completed, but there is still a long way to go to control air pollution under the new situation. Ultra-clean emissions from non-electric industries represented by iron and steel, non-ferrous metals, and building materials are imminent. The flue gas in non-electric industries generally has a low flue gas temperature, usually at or below 200°C. Therefore, the commonly used V 2 o 5 -WO 3 (MoO 3 ) / TiO 2 Due to its high reaction temperature and small temperature window, the denitrification catalyst is difficult to apply to the requirements of flue gas denitrification in the non-electric field. Therefore, it is necessary to develop denitration catalysts with excel...

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): C01B32/336C01B32/354C01B32/318C01G45/10C01G49/14B01J27/053B01J37/04B01J37/02B01J37/08B01J20/20B01J20/30B01D53/02
CPCC01B32/336C01B32/354C01B32/318C01G45/10C01G49/14B01J27/053B01J37/04B01J37/084B01J37/0201B01J37/08B01J20/20B01D53/02B01D2253/102B01D2257/40B01D2258/0283
Inventor 杨林蒋文举江霞姚露
Owner SICHUAN UNIV
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