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

Method for producing semicoke by using pulverized coal

A technology for pulverized coal and semi-coke, applied in the field of semi-coke (blue carbon) production, can solve the problems of wear and tear of conveying equipment, difficult separation of tar, large amount of gas dust, etc. Effect

Active Publication Date: 2013-02-27
SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of this technology are: 1) The conveying equipment is seriously worn; 2) The amount of dust in the gas is large, and the recovered tar is difficult to separate, etc.

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
  • Method for producing semicoke by using pulverized coal
  • Method for producing semicoke by using pulverized coal
  • Method for producing semicoke by using pulverized coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of semi-coke produced by pulverized coal, the ratio of each raw material component according to the mass percentage is:

[0021] Raw material pulverized coal 92%, coal tar medium temperature pitch 8%.

[0022] Production method: After mixing the raw coal powder and coal tar medium-temperature pitch in proportion, send it to a horizontal mixer, feed 0.4MPa saturated steam into the mixer and the spacer for kneading and mixing, and mix evenly and have a certain degree of plasticity. Discharged from the mixer, pressed into oval briquettes with a diameter of 35 mm by a double-roller forming machine, put into a kettle-type carbonization furnace for carbonization and carbonization, and the carbonization temperature is 720 ° C to obtain semi-coke.

[0023] The quality index of embodiment 1 gained semi-coke is as follows:

[0024] Ash (A d ) 6.91%, volatile matter (V daf ) 4.20%, sulfur (S t,,d ) 0.26%, specific resistance>109816 10 -6 Ω·m; high reactivity, semi-focu...

Embodiment 2

[0026] A kind of semi-coke produced by pulverized coal, the ratio of each raw material component according to the mass percentage is:

[0027] Raw coal powder 86%, caking coal 8%, coal tar medium temperature pitch 6%.

[0028] Production method is with embodiment 1.

[0029] The quality index of embodiment 2 gained semi-coke is as follows:

[0030] Ash (A d ) 8.31%, volatile matter (V daf ) 3.97%, sulfur (S t,,d ) 0.46%, specific resistance>108464 10 -6 Ω·m; high reactivity, the reactivity of semi-coke to CO2 see figure 2 . Drop strength: a single ball 1.83 meters free fall 10 times without breaking.

Embodiment 3

[0032] A kind of semi-coke produced by pulverized coal, the ratio of each raw material component according to the mass percentage is:

[0033] Raw coal powder 90%, caking coal 2%, binder 8%.

[0034] Production method is with embodiment 1.

[0035] The quality index of embodiment 3 gained semi-coke is as follows:

[0036] Ash (A d ) 7.89%, volatile matter (V daf ) 4.56%, sulfur (S t,,d ) 0.36%, specific resistance>108312 10 -6 Ω·m; high reactivity, the reactivity of semi-coke to CO2 see image 3 . Drop strength: a single ball 1.83 meters free fall 10 times without breaking.

[0037] In the above embodiments, the raw coal powder is one or more of long-flame coal, non-caking coal or weakly caking coal. Caking coal is 1 / 3 coking coal or fat coal, and the ash content is not more than 12%, and the sulfur is less than 1%. The softening point (ring and ball method) of coal tar medium-temperature pitch is 75°C to 90°C.

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
Specific resistanceaaaaaaaaaa
Specific resistanceaaaaaaaaaa
Specific resistanceaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of semicoke production, in particular to a method for producing the semicoke by using pulverized coal. The method is characterized in that raw material constituents are mixed in proportion and sent to a blender with a spacer bush, and saturated steam or superheated steam at a temperature of no more than 200 DEG C and at a pressure ranging from 0.4MPa to 0.7MPa is fed into the spacer bush and the blender respectively, so that binders are melted and immersed and contacted with coal particles fully; and the mixture is pressed by a roll-type forming machine into molded coal with diameters ranging from 20mm to 50mm, and the molded coal is filled in a vertical coking furnace to be subjected to carbonization to produce the semicoke. Compared with the prior art, the method has the advantages that pulverized coal of long flame coal and the like serves as main materials to replace lump coal and serves as materials for special coke for industrials of iron alloys, calcium carbide and the like, so that the enterprise production cost is reduced, resources are used reasonably, and the environment is protected; and the production process is relatively simple, the investment is few, an existed vertical furnace device is not needed to be changed, and only crushing, mixing, molding equipment is needed to be added.

Description

technical field [0001] The invention relates to the field of semi-coke (blue coke) production, in particular to a method for producing semi-coke with pulverized coal. Background technique [0002] my country's Shenfu, Xinjiang and other places are areas that contain a large amount of mineral resources such as non-sticky, weakly sticky and long-flame coals, especially the Shenfu area, one of the eight largest coal fields in the world, has built a lot of 600,000 tons / year to 240 tons 10,000 tons / year semi-coke plant. These semi-coke plants use large-scale vertical furnace production technology to produce semi-coke, and the raw materials for the furnace are all non-sticky, weakly sticky or long-flame coal lumps with a size of 20mm to 80mm. The semi-coal factory screens the purchased lump coal, and takes 20mm-80mm lump coal as the raw material for the vertical furnace production, and the pulverized coal that accounts for about 15%-20% of the coal under the screen can only be sol...

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): C10B53/04
Inventor 刘淑萍方会斌郑广超陈亮
Owner SINOSTEEL ANSHAN RES INST OF THERMO ENERGY 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