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Method using coke powder and tar slag for substitution of part of coal for production of coke

A technology that replaces parts and tar residues. It is applied in coking ovens and petroleum industries. It can solve problems such as difficult industrial production and large-scale application, high device costs, and complicated processes, and achieve important environmental and economic benefits.

Active Publication Date: 2015-08-19
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN1070220A proposes to use tar slag as a binder for the production of briquettes, but the briquettes produced are not strong enough to be used in industrial applications and can only be used for civil combustion; patent CN1693190A proposes to use tar slag to prepare high specific surface area through carbonization and activation The method of activated carbon and light coal tar, but this method is complicated in process and high in device cost, and it is difficult to realize industrial production and large-scale application

Method used

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  • Method using coke powder and tar slag for substitution of part of coal for production of coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Combine 4kg of coke powder with a particle size of less than 10mm and 100kg of blended coal with a particle size of less than 6mm (A d =7%, VM d =28%) into the crusher for mixing, the particle size of the crushed material is less than 1mm; the mixture of crushed coke powder and blended coal is added to the coal blending mixer, and at the same time, 1kg of 80°C tar residue, tar residue, coke powder and blended coal are fully mixed and transported to the coal tower through the coal charging belt, and then loaded into the coke oven by the coal charging machine and heated to 1050°C for 3 hours to produce coke products. The test results of coke products are: M40 (coke crushing strength) is 67.3%, M10 (coke abrasion resistance) is 13.5%, CRI (coke reactivity) is 31%, and CSR (coke strength after reaction) is 57% .

Embodiment 2

[0030] Combine 6kg of coke powder with a particle size of less than 10mm and 100kg of blended coal with a particle size of 6mm (A d =8%, VM d =27%) into the crusher for mixing and crushing, the particle size of the material is less than 1mm; the mixture of pulverized coke powder and blended coal is added to the coal blending mixer, and at the same time, 2kg of 85 ℃ tar slag, tar slag, coke powder and blended coal are fully mixed and transported to the coal tower through the coal charging belt, and then loaded into the coke oven by the coal charging machine and heated to 1050 ℃ for 4 hours to produce coke products. The test results of coke products are: M40 is 66.6%, M10 is 13.9%, CRI is 31.8%, and CSR is 56.4%.

Embodiment 3

[0032] Combine 8kg of coke powder with a particle size of less than 10mm and 100kg of blended coal with a particle size of less than 6mm (A d =9%, VM d =25%) into the crusher for mixing and crushing, the particle size of the material is less than 1mm; the mixture of pulverized coke powder and blended coal is added to the coal blending mixer, and at the same time, 3kg of 90 ℃ tar slag, tar slag, coke powder and blended coal are fully mixed and transported to the coal tower through the coal charging belt, and then loaded into the coke oven by the coal charging machine and heated to 1100 ℃ for 3 hours to produce coke products. The test results of coke products are: M40 is 66.3%, M10 is 14.2%, CRI is 31.9%, and CSR is 55.7%.

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Abstract

The invention discloses a method using coke powder and tar slag for substitution of part of coal for production of coke, and the method is characterized by including the following steps: (1) crushing the coke powder and mixed coal for pulverizing, to be more specific, the coke powder with the particle size less than 10 mm and the with the particle size less than 6 mm are taken for mixing and crushing, and the crushed mixed material particle size is less than 1 mm; (2) adding the tar slag, to be more specific, the tar slag with the temperature of 80-90 DEG C is evenly sprayed on the mixed material obtained by the step (1) the, and mixed for cooperating fully; (3) preparing the coke, the fully cooperated material is added into a coal tower, and enters into a coke oven for high temperature carbonization, and after the coke is mature, the coke is cooled. According to the method, a new way for coke powder and tar slag utilization is developed, waste produced in the production process is comprehensively utilized, the environment is protected, and enterprise economic benefit is improved.

Description

technical field [0001] The invention relates to the reuse of coking waste products and coke preparation, in particular to a method for producing coke by substituting part of coal with coke powder and tar residue. Background technique [0002] my country has abundant coal resources, and in the process of energy utilization, the dependence on coal is relatively large. Coal workers have carried out many aspects of coal processing and utilization. The most widely used method is to use coal to carry out high-temperature dry distillation to produce coke (CN1171807A, CN1465656A) for blast furnace ironmaking production; coke will produce a large amount of coke powder during transportation and loading and unloading, which is about 10%. Buying more than 1 million tons of coke produces more than 100,000 tons of coke powder. Baosteel Branch also produces a large amount of coke powder during coke dry quenching and belt transportation and loading and unloading every year. The utilizatio...

Claims

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Application Information

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IPC IPC(8): C10B57/04
Inventor 王玉明胡德生毛晓明钱晖
Owner BAOSHAN IRON & STEEL CO LTD