A type of coke and its preparation method and application

A technology for coke powder and briquette, which is applied in the field of moulded coke and its preparation, can solve the problems of poor thermal strength, low yield and low crushing strength of moulded coke, and achieves the effects of reducing stress difference, low ash content and large lumpiness

Active Publication Date: 2021-08-10
山西沁新能源集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of poor thermal strength, low crushing strength and low yield of formed coke in the prior art, to provide a formed coke and its preparation method and application, and to realize the preparation without the presence of a binder Formed coke with high thermal strength and large particle size

Method used

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  • A type of coke and its preparation method and application
  • A type of coke and its preparation method and application
  • A type of coke and its preparation method and application

Examples

Experimental program
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preparation example Construction

[0012] The first aspect of the present invention provides a method for preparing coke, comprising:

[0013] (1) The mixed coal obtained by mixing the raw materials is pressed to obtain briquettes; based on the total weight of the raw materials, the raw materials include: coke powder 15-25wt%, fat coal 60-70wt%, anthracite 5-15wt% ;

[0014] (2) Put the briquettes into a coke oven at room temperature, raise the temperature of the coke oven from room temperature to 1000-1200°C at a rate of 6-10°C / h, and dry distillation at 1000-1200°C for 380-480h to obtain Type coke.

[0015] In the present invention, the molded coal is heated at a relatively low heating rate in the coking oven and coked for a long time, so that the colloid in the fat coal is completely melted to produce a sufficient amount of colloid, and coke powder with strong shrinkage resistance and grindable Anthracite with good properties can not only fully bond the coal particles of coal blending, but also reduce the ...

Embodiment 1

[0029] The property parameters of the raw materials for preparing the molded coke in this embodiment are as shown in Table 1, and the composition of the raw materials is as shown in Table 2; the preparation method of the molded coke is as follows:

[0030] (1) Petroleum coke is pre-crushed to obtain petroleum coke powder, based on the total weight of the petroleum coke powder, the average particle size of 95wt% of the coke powder is 3 ,

[0031] (2) Put the briquettes into the coke oven at room temperature, raise the temperature of the coke oven from room temperature to 1100°C at a rate of 8°C / h, and conduct dry distillation at 1100°C for 400 hours. The mold coke was rinsed with water until the mold coke was cooled to room temperature to obtain mold coke A1.

[0032] The performance parameters of the coke A1 obtained in this embodiment are shown in Table 6.

Embodiment 2-5

[0034] Table 1 shows the property parameters of the raw materials for preparing the form coke in Examples 2-5, and Table 2 shows the composition of the raw materials.

[0035] The preparation method of the molded coke is the same as in Example 1 to obtain molded cokes A2-A5.

[0036] The performance parameters of the cokes A2-A5 obtained in Examples 2-5 are shown in Table 6.

[0037] Table 1: The property parameter of raw material in embodiment 1-5

[0038]

[0039] Table 2: The composition of raw material among the embodiment 1-5

[0040]

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Abstract

The invention relates to the field of coal chemical industry, in particular to a molded coke and its preparation method and application. The preparation method of the molded coke includes: (1) pressing the mixed coal obtained by mixing raw materials to obtain molded coal; based on the total weight of the raw materials, the raw materials include: coke powder 15-25wt%, fat coal 60 ‑70wt%, anthracite 5‑15wt%; (2) put the briquettes into a coke oven at room temperature, raise the temperature of the coke oven from room temperature to 1000‑1200°C at a rate of 6‑10°C / h, and Dry distillation at ‑1200°C for 380‑480 hours to obtain molded coke. The molded coke obtained by the invention has very few internal cracks, large blockiness, high heat intensity and low ash content, so that it has broad application prospects.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a molded coke and its preparation method and application. Background technique [0002] Formed coke is coke with uniform shape produced by pressurized molding method. Formed coal coking is to knead part of the raw coal and press it into a block with a certain shape and size, and then mix the block with the raw coal in a certain proportion. into the coke oven for coking. Briquette coking is beneficial to increase the pile proportion of incoming coal and improve coke quality. It can also increase the amount of weakly bonded coking coal on the basis of stable coke quality and reduce the cost of coal blending for enterprises. Compared with conventional coke, the size and shape of the coke can be prepared according to the needs of users. The coke body of the coke is dense, the pores are small and evenly distributed, and it is more suitable for applications in metallurgy, chemica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/04C10B53/08
CPCC10B53/04C10B53/08
Inventor 郭建伟王旭兵郝建祥李世俊柴茂生
Owner 山西沁新能源集团股份有限公司
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