Particle size gradation coal blending method capable of improving strength of briquetted activated carbon

A technology of activated carbon and strength, applied in the field of coal chemical industry, can solve the problems of low strength of finished products, poor strength of briquette activated carbon, low degree of coalification, etc., and achieve the effect of improving molding compactness, meeting market demand, and improving strength.

Inactive Publication Date: 2014-04-23
CHINA UNIV OF MINING & TECH +1
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Strength is an important indicator of the performance of briquetted activated carbon. The weak caking coal in Datong, Shanxi has proper cohesiveness, and the briquetted activated carbon whose adsorption index meets the requirements can be prepared, and the strength is above 90, but the reserves of this weakly caking coal are very limited. ; and Xinjiang, Shaanxi Shenfu and other places have relatively large reserves of non-stick coal, but the degree of co...

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
  • Particle size gradation coal blending method capable of improving strength of briquetted activated carbon
  • Particle size gradation coal blending method capable of improving strength of briquetted activated carbon
  • Particle size gradation coal blending method capable of improving strength of briquetted activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A particle graded coal blending method for improving the strength of briquetted activated carbon, comprising the steps of:

[0024] (1) Grinding. The above-mentioned Xinjiang non-stick coal and fat coal are selected for grinding respectively. The particle size of non-stick coal after grinding is controlled at 325 mesh, and the particle size of fat coal after grinding is controlled at 400 mesh or 800 mesh;

[0025] (2) Weigh the proportion, add 10% pulverized fat coal (400 mesh) or 5% pulverized fat coal (800 mesh) to the pulverized non-caking coal, and stir until well mixed;

[0026] (3) Briquetting forming, sending the mixed pulverized coal into the forming equipment for briquetting;

[0027] (4) Carbonization, put the briquetted coal into the rotary furnace for carbonization;

[0028] (5) Activation: activate the carbonized coal in an activation furnace until the loss on ignition rate reaches 50%, and obtain the finished briquetted activated carbon.

[0029] The br...

Embodiment 2

[0034] A particle graded coal blending method for improving the strength of briquetted activated carbon, comprising the steps of:

[0035] (1) Grinding. The above-mentioned Xinjiang non-stick coal and gas-fertilized coal are selected for grinding respectively. The particle size of the non-stick coal after grinding is controlled at 325 mesh, and the particle size of the gas-fertilizer coal after grinding is controlled at 500 mesh;

[0036] (2) Weigh the proportion, add the pulverized gas fertilizer coal with a weight fraction of 20% to the pulverized non-caking coal, and stir until the mixture is uniform;

[0037] (3) Briquetting forming, sending the mixed pulverized coal into the forming equipment for briquetting;

[0038] (4) Carbonization, put the briquetted coal into the rotary furnace for carbonization;

[0039] (5) Activation: activate the carbonized coal in an activation furnace until the loss on ignition rate reaches 50%, and obtain the finished briquetted activated ca...

Embodiment 3

[0045] A particle graded coal blending method for improving the strength of briquetted activated carbon, comprising the steps of:

[0046] (1) Grinding, the above-mentioned Xinjiang non-stick coal and coking coal are selected for grinding respectively, the particle size of non-stick coal after grinding is controlled at 325 mesh, and the particle size of coking coal after grinding is controlled at 400 mesh;

[0047] (2) Weigh the proportion, add 20% pulverized coking coal into the pulverized non-caking coal, and stir until evenly mixed;

[0048] (3) Briquetting forming, sending the mixed pulverized coal into the forming equipment for briquetting;

[0049] (4) Carbonization, put the briquetted coal into the rotary furnace for carbonization;

[0050] (5) Activation: activate the carbonized coal in an activation furnace until the loss on ignition rate reaches 50%, and obtain the finished briquetted activated carbon.

[0051]Get the briquetting activated carbon sample label of ab...

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 particle size gradation coal blending method capable of improving the strength of briquetted activated carbon. The particle size gradation coal blending method comprises the following steps: (1) grinding: respectively grinding non-caking coal and highly caking coal, wherein the particle size of the non-caking coal after grinding is 300-400 meshes, and the particle size of the highly caking coal is 300-800 meshes; (2) weighing and proportioning: adding 5%-30% by weight fraction of the highly caking coal after grinding into the non-caking coal after grinding, and stirring till uniform mixing; (3) briquetting and forming: sending coal powder after mixing into a forming device for briquetting; (4) carbonizing: putting coal briquettes after briquetting and forming into a rotary furnace for carbonization; (5) activating: activating the coal briquettes after carbonization in an activating furnace till the loss on ignition achieves 45%-55% to obtain a briquetted activated carbon finished product. According to the particle size gradation coal blending method disclosed by the invention, by controlling the particle size gradation of the non-caking coal and the highly caking coal, the strength of the briquetted activated carbon finished product can be significantly improved. The particle size gradation coal blending method has the advantages of low cost and easiness in implementation.

Description

technical field [0001] The invention relates to a coal blending method, in particular to a particle graded coal blending method for increasing the strength of briquetted activated carbon, and belongs to the technical field of coal chemical industry. Background technique [0002] Activated carbon is a hydrophobic adsorbent made from carbon-containing substances as raw materials, which is carbonized and activated at high temperature. Activated carbon contains a large number of micropores, has a huge specific surface area, can effectively remove color, odor, and remove organic pollutants and some inorganic substances in water bodies. It is widely used in environmental protection, chemical industry and other fields. Therefore, its The demand is increasing year by year. my country has abundant coal reserves, which can be effectively used to prepare coal-based activated carbon. According to different raw materials, coal-based activated carbon is divided into crushed activated ca...

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): C01B31/08C10B57/04C10B53/08B01J20/20B01J20/30C01B32/318
Inventor 张洪叶传珍朱超张锐显赵孝佳戈晴晴
Owner CHINA UNIV OF MINING & TECH
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