Coking coal dust shaping technique

A molding process and coking coal technology, which is applied in the petroleum industry, solid fuel, fuel, etc., can solve the problems of easy secondary dust, many process links, and large floor space, and achieve safe and reliable operation, low noise, and land occupation. small space effect

Inactive Publication Date: 2008-04-09
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

During the graded humidity control process in the fluidized bed, a large amount of fine coal dust will be produced. The coal dust has the characteristics of small particle size, low water content, looseness, and easy secondary dust generation. If the coal dust is directly sent to the finished coal Transportation in the powder will generate a large amount of secondary

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] This process is realized by high-pressure forming technology according to the characteristics of fine coking coal dust under low moisture.

[0013] First, a large amount of fine coal dust produced by the fluidized bed is collected by the dust collector and sealed and transported to the coal dust collection bin, and then the coal dust is continuously transported to the high-pressure molding machine through the continuous closed conveying equipment. According to the characteristics of the coal dust, for To ensure that the formed coal powder balls have a certain strength, a pre-pressing screw is set at the feed port to make the coal dust entering the high-pressure counter-roller have a certain pressure, and then the coal dust is extruded into a briquette with a certain shape through the high-pressure counter-roller , and finally transport the shaped briquettes to the product coal delivery system.

[0014] The process flow is: dust collector→scraping trigger→ash bin→screw c...

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Abstract

A process method of coking coal dust forming chiefly aims at settling the problem about a second dust emission in the course of transportation. First, the large quantity of small smut produced by a fluidized bed can be collected by a dust precipitator, be conveyed to a smut collecting storehouse, and constantly transmitted into a high pressure molding machine by an incessant closed conveyer. The feeding mouth of the high pressure molding machine is provided with a repressing screw to ensure the smut entering a high pressure rolling pair to be with certain pressure. Then the smut can be extruded into effigurate briquette, which at last is conveyed into a production coal conveying system after the molding. The process can prevent the production coal from producing the second dust emission during the transportation, thus reducing the engineering investment and environmental pollution with the advantages of less floor space and increasing the coke yield produced by coke oven.

Description

technical field [0001] The invention relates to a processing method for coking coal dust, in particular to a molding process for coking coal dust. Background technique [0002] The coking gas airflow drying technology is aimed at coking coal for coke ovens. The coke oven flue gas is used to classify the coal according to the particle size requirements in the fluidized bed of the core equipment, and at the same time, the heat of the original waste gas is used to remove part of the moisture in the coal, so as to achieve optimization. Coking coal particle size and the purpose of adjusting moisture. During the graded humidity control process in the fluidized bed, a large amount of fine coal dust will be produced. The coal dust has the characteristics of small particle size, low water content, looseness, and easy secondary dust generation. If the coal dust is directly sent to the finished coal Transportation in the powder will generate a large amount of secondary dust and seriou...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10L5/06
Inventor 陈启祥蒋升华郭德元马素巧王蕾齐婳董宏良李德瑾刘同清刘兆峰陈庆
Owner SHANDONG IRON & STEEL CO LTD
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