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Formed coke and preparation method and application thereof

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 of moulded coke, low yield and low crushing strength, and achieves the effects of less internal cracks, low ash content and large lumps

Inactive Publication Date: 2020-08-25
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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  • Formed coke and preparation method and application thereof
  • Formed coke and preparation method and application thereof
  • Formed coke and preparation method and application thereof

Examples

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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%, lean coal 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 1050-1200°C at a rate of 6-10°C / h, and conduct dry distillation at 1050-1200°C for 350-400h to obtain Type coke.

[0015] Coke powder with low ash content and strong anti-shrinkage ability, fat coal with high ash content and high caking performance and lean coal with low caking performance are blended according to a specific ratio. The reasonable proportion of coal, rubber powder and lean coal can make full use of the characteristics of different coal types, and it can be reasonably matched with the coking time and ...

Embodiment 1

[0030] The property parameters of the raw materials for preparing molded coke in the present embodiment are as shown in Table 1, the ratio of the caking index of the fat coal to the caking index of the lean coal is 1.35:1, and the composition of the raw materials is as shown in Table 2; The preparation method of described coke is as follows:

[0031] (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 ,

[0032] (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 380 hours. The mold coke was rinsed with water until the mold coke was cooled to room temperature to obtain mold coke A1.

[0033] The performance parameters of the coke A1 obtained in this embodiment are shown in Table 6.

[0034] Table 1: The p...

Embodiment 2-5

[0037] 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.

[0038] The preparation method of the molded coke is the same as in Example 1 to obtain molded cokes A2-A5.

[0039] The performance parameters of the cokes A2-A5 obtained in Examples 2-5 are shown in Table 6.

[0040] Table 2: The composition of raw material among the embodiment 1-5

[0041]

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Abstract

The invention relates to the field of coal chemical industry, in particular to formed coke and a preparation method and application thereof. The preparation method of the formed coke comprises the following steps: (1) pressing mixed coal obtained by mixing raw materials to obtain formed coal; based on the total weight of the raw materials, the raw materials comprise 15-25 wt% of coke powder, 60-70wt% of fat coal and 5-15 wt% of lean coal; and (2) putting the formed coal into a coke oven at room temperature, heating the coke oven from room temperature to 1050-1200 DEG C at a rate of 6-10 DEG C / h, and carrying out destructive distillation at 1050-1200 DEG C for 350-400 hours to obtain the formed coke. The formed coke obtained in the invention has the advantages of few internal cracks, largelumpiness, high thermal strength and low ash content so that the formed coke has a wide application prospect.

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 Applications(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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