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Airflow classifying and airflow drying process for coking coal

A technology of airflow classification and airflow drying, which is applied in the direction of separating solids from solids with airflow, drying solid materials, and drying solid materials by heating. Environmental pollution and the effect of reducing the amount of waste water

Active Publication Date: 2013-11-27
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC +1
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  • Application Information

AI Technical Summary

Problems solved by technology

All the above-mentioned methods have not been able to monopolize the field of coal drying due to their shortcomings in one aspect.

Method used

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  • Airflow classifying and airflow drying process for coking coal
  • Airflow classifying and airflow drying process for coking coal
  • Airflow classifying and airflow drying process for coking coal

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Embodiment Construction

[0025] The airflow classification and airflow drying process of coking coal material utilizes the characteristics of bulk materials in fluidized state, and this process has dual functions of grading and drying coking coal material. It can adapt to various requirements by adjusting the structure size and fluidization speed.

[0026] See figure 1 , is that the device of the present invention consists of two parts, the main body of the fluidized vibrating bed and the classification collection device. The drying and preliminary classification of coal materials are completed in the fluidized vibrating bed; the reclassification of small particles is completed by the classification collection device. The grading and drying process is described as follows:

[0027] The coal material enters the main body 20 of the fluidized vibrating bed from the buffer bin 17 through the quantitative feeding device 18 and the raw material throwing device 19. The coal material is dried and divided in...

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Abstract

The invention relates to an airflow classifying and airflow drying process for coking coal. In the process, coke oven flue waste gas is taken as a drying medium, the fluidization technology is adopted for drying the coal, and simultaneously the coal is classified into several classes according to particle sizes by an airflow separation principle. A device consists of a vibrating fluidized bed main body and a classifying collection device, wherein the vibrating fluidized bed main body comprises a primary air supply device, a vibrating main box body with an air distributing plate, a sedimentation classifying section and a drying section with a secondary air inlet; and the classifying collection device completes the final collection of small-particle materials through a group of dust collection devices or several groups of duct collection devices with different structures according to different requirements of the process on the classification of the particle sizes. The airflow classifying and airflow drying process has the advantages that: energy is saved, the wastewater generated in the coking process is reduced, the environmental pollution is lightened and the production capacity of the coke oven can be improved.

Description

technical field [0001] The invention relates to a process for simultaneously grading and drying coal materials, in particular to a process for simultaneously grading and drying coking coal materials by using the principle of fluidization and combining airflow separation and airflow drying. Background technique [0002] Coking coal generally has a water content of about 8 to 10%. The maximum is above 14%. When the coal moisture fluctuates greatly during the coking process, it will affect the normal production operation and reduce the life of the coke oven. The moisture in the coal material entering the coking oven is condensed into phenol-containing wastewater in the form of water vapor and discharged with the gas during the coking process. If the coal material is dried and dehydrated before entering the coke oven, it can not only save coke oven heating gas, shorten the coking time, and reduce the amount of discharged waste water, but also increase the specific gravity of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B9/02F26B3/092
Inventor 蔡承祐马增礼尹华张晓光于涛段有龙吕成
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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