Coking coal dust shaping technique

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...

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 dust and seriously pollute the environment

In the past, pulverized coal molding mostly used binder and low-pressure molding technology. This process needs to be equipped with quantitative feeding devices, multi-stage mixing equipment, and low-pressure molding machines. This requires a large area, many process steps, and pollutes the environment. and other shortcomings