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Process for producing briquette

A production method and briquette technology, applied in the petroleum industry, solid fuel, fuel, etc., can solve the problems of reducing the quality of briquette products, increasing the ash content of briquette products, and low strength of briquette products, so as to achieve expanded use and a large market Price advantage, good immersion effect

Active Publication Date: 2009-12-09
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The binder cold forming process has the following defects: ①The strength of the briquette product is low; ②The use of binder will greatly increase the ash content of the briquette product and reduce the quality of the briquette product; ③Low fixed carbon, low cold and hot strength, and low water immersion strength , carry-over and other defects, which is also the main reason why it is difficult to enter the market for briquette products after decades of research
However, the traditional coking briquette process needs to add 6-8% of high-binding binders such as tar or asphalt, and the yield of the production process is not very high, resulting in high production costs. Compared with local lump coal, it lacks price advantages

Method used

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  • Process for producing briquette
  • Process for producing briquette
  • Process for producing briquette

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Jincheng anthracite (see Table 1 for coal quality analysis indicators) crushed into a particle size of less than 3mm, of which less than 1mm is greater than 75% (see Table 2 for screening test data), and fat coal (see Table 1 for coal quality analysis indicators) 1mm, of which the amount of less than 0.45mm is greater than 70% (see Table 2 for screening test data), Jincheng anthracite and fat coal are 70% anthracite by weight percentage, and 30% fat coal is mixed evenly. Add water to make the formed moisture reach 11%. At 580Kg / cm 2 Forming under forming pressure;

[0020] Carbonization is carried out in a kiln-car tunnel kiln. The carbonization temperature is: room temperature to 300°C, and the heating rate is 15°C / min; 300 to 500°C, and the heating rate is 13°C / min; 500 to 750°C, and the heating rate is 9°C / min; 750℃~1000℃, the heating rate is 10℃ / min, and the carbonization time is 10 hours; after carbonization, the hot coal is cooled by water. The inspection indexes of ...

Embodiment 2

[0022] Industrial briquette, coal blending raw material composition (weight percentage): fat coal 16%, Jincheng anthracite coal 84%, carbonized in a kiln-car tunnel kiln, the carbonization temperature is: room temperature ~ 300 ℃, heating rate is 17 ℃ / min; 300~500℃, heating rate is 14℃ / min; 500~750℃, heating rate is 8℃ / min; 750℃~850℃, heating rate is 7℃ / min, carbonization time is 8 hours; carbonization The post-heated coal is cooled by water. The rest is the same as in Example 1, and the detection indexes of the produced briquette are shown in Table 3.

Embodiment 3

[0024] Industrial coal blending raw material composition (weight percentage): 1 / 3 coking coal (see Table 1 for coal quality analysis indicators, and Table 2 for screening test data) 20%, Jincheng anthracite coal 80%, in kiln-car tunnel kiln The carbonization temperature is: room temperature~300℃, heating rate is 15℃ / min; 300~500℃, heating rate is 12℃ / min; 500~750℃, heating rate is 7℃ / min; 750℃~ At 900°C, the heating rate is 9°C / min, and the carbonization time is 8 hours; after carbonization, the hot coal is cooled by water. The rest are the same as in Example 1, and the detection indexes of the produced briquette are shown in Table 4.

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Abstract

A kind of production method of briquette is to mix anthracite and bituminous coal by weight percentage into 70-84% of anthracite and 16-30% of bituminous coal; after mixing evenly, add water to make the molding moisture reach 11-13%, at 300-580Kg / cm2 Molded under molding pressure; carbonized in kiln car type tunnel kiln for 8 to 10 hours; after carbonization, the hot briquettes are cooled by water. The invention has the advantages of simple process, convenient operation, high carbon fixation in coal briquettes, high strength indexes, low carryover and good water immersion.

Description

Technical field [0001] The invention belongs to a production method of briquette. technical background [0002] Clean coal technology is an important pillar of the sustainable development of my country's coal industry, and briquette technology has been included in the preferred project of clean coal technology. As the country's requirements for environmental protection are becoming more and more stringent, regulations to prevent the burning of raw coal are frequently promulgated, making the promotion and application of briquette products particularly important. [0003] According to the traditional pulverized coal forming process, the briquette can be divided into two categories: industrial briquette and civil briquette. Civil briquettes include briquettes, briquettes, etc. [0004] In the traditional briquette production process, there are mainly binder cold forming process (including natural curing and drying curing post-treatment process) and adding high-cohesive binder such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/28
Inventor 赵贵福张国华司利鹏原丰贞周福明刘西军姜铁明黄虎林秦成小
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD