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Method for producing carbonized coal with coal material

A coal and carbonization technology, which is applied in the fuel, solid fuel, petroleum industry and other directions, can solve the problems of low dosage of weakly cohesive coal, easy to produce cracks and carbonized briquette falling strength, etc., and achieve full dispersion of shrinkage stress. , Product cost reduction, the effect of overcoming cracks

Inactive Publication Date: 2009-10-07
山西中元煤洁净技术有限公司
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  • Application Information

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Problems solved by technology

[0011] Based on the many problems existing in the production of carbonized briquettes by the existing weakly cohesive coal materials, the present invention mainly solves the problem of low dosage of weakly cohesive coal materials in the process of producing carbonized briquettes. , the problem of easy cracks in the carbonization process and the problem of low drop strength of carbonized briquettes

Method used

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  • Method for producing carbonized coal with coal material
  • Method for producing carbonized coal with coal material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] First, according to the caking property of anthracite pulverized coal, the ratio of the binder is determined, that is, 2 parts of coal tar and 7 parts of asphalt are mixed evenly to prepare the binder.

[0025] Secondly, according to the cohesiveness of anthracite pulverized coal and the shrinkage of briquettes in the carbonization process, the proportion of the nodulizer is determined, that is, 2 parts of petroleum pitch, 3 parts of coal tar pitch, 3 parts of carbon black and 1 part of water glass, mixed evenly, at a temperature of 500°C to 650°C, undergo polycondensation for 5 hours to prepare the nodularizing agent.

[0026]Finally, crush 100 parts of anthracite pulverized coal to a fine material with a particle size of less than 2 mm. After drying, add 9 parts of the prepared binder and mix evenly. Fully stir and mix at a temperature of 80 ° C to 150 ° C. At the same time, add the prepared 9 parts of spheroidizing agent obtained; the well-stirred and well-bonded and...

Embodiment 2

[0028] First, according to the caking property of anthracite pulverized coal, determine the ratio of the binder, that is, mix 3 parts of coal tar and 8 parts of asphalt evenly to prepare the binder.

[0029] Secondly, according to the cohesiveness of anthracite pulverized coal and the shrinkage of briquettes in the carbonization process, the proportion of the nodulizer is determined, that is, 3 parts of petroleum pitch, 4 parts of coal tar pitch, 4 parts of carbon black and 2 parts of water glass, mixed evenly, at a temperature of 600°C to 750°C, undergo polycondensation for 7 hours to prepare the nodularizing agent.

[0030] Finally, crush 100 parts of anthracite pulverized coal to a fine material with a particle size of less than 2 mm. The obtained 13 parts of nodularizing agent; the well-stirred and well-bonded and plastic mixture is transported to the molding equipment for molding. During the molding process, the selection of molding pressure directly affects the density o...

Embodiment 3

[0032] Firstly, according to the caking property of lean coal pulverized coal, the ratio of the binder is determined, that is, 3 parts of coal tar and 9 parts of asphalt are uniformly mixed to prepare the binder.

[0033] Secondly, according to the cohesiveness of lean coal pulverized coal and the shrinkage of briquettes in the carbonization process, the proportion of the nodulizer is determined, that is, 4 parts of petroleum pitch, 4 parts of coal tar pitch, 4 parts of carbon black and 2 parts of water glass, mixed evenly, at a temperature of 600°C to 850°C, undergo polycondensation for 8 hours to prepare the nodularizing agent.

[0034] Finally, crush 100 parts of lean coal pulverized coal to a fine material with a particle size of less than 2 mm. 14 parts of spheroidizing agent obtained; the well-stirred and well-bonded and plastic mixture is transported to the molding equipment for molding. During the molding process, the selection of molding pressure directly affects the ...

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Abstract

A method for producing carbonized coal with coal material comprises the following components: after adding additive into the coal material and mixing to uniform, mixing in a temperature of 50 DEG C to 250 DEG C, and simultaneously adding nodulizing agent; then shaping in a pressure of 300-1000KN; increasing the temperature and charring according to a program for generating the carbonized coal. According to the invention, the coal material is added with adhesive and nodulizing agent. Furthermore the granularity and matching parameter of coal material are adjusted. Through adjusting the dimension and connecting characteristic of spherule and furthermore controlling the crackle generation and shrinkage characteristics, the performance index controlling of intensity and granularity of product is realized. The whole-ball rate and strength of carbonized coal are increased. The apparent porosity is improved. The high-quality carbonized coal product is obtained.

Description

technical field [0001] The present invention relates to a method for producing carbonized briquettes from coal, in particular to a carbonized briquette prepared by forming and carbonizing with weakly cohesive anthracite pulverized coal, lean coal pulverized coal or coke powder as the main raw material Methods. Background technique [0002] The existing document CN1153810 discloses a foundry coke produced from anthracite and its manufacturing method. The foundry coke is composed of anthracite, coke powder, petroleum coke, coking coal, tar pitch and high temperature tar. Its weight percentage is: anthracite or lean coal: 48% to 57%; coke powder: 12% to 18%; petroleum coke: 10% to 26%; coking coal or fat coal: 6% to 11%; tar pitch: 6% ~ 8%; high temperature tar: 2% ~ 3%. The manufacturing method is as follows: 1) crushing raw materials, 2) batching, 3) stirring the mixture, 4) molding, 5) carbonizing, and 6) quenching coke. The invention has the advantages of high strength,...

Claims

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Application Information

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IPC IPC(8): C10L5/16C10B47/00C10B57/06
Inventor 张永发梁言杨力孙亚玲
Owner 山西中元煤洁净技术有限公司
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