Vibrational fluidized bed device for controlling humidity and grading coking coal and fluidizing process thereof

Abstract

The invention relates to a vibrational fluidized bed device for controlling humidity and grading coking coal and a fluidizing process thereof and belongs to the field of fluidizing and humidifying of the coking coal. The device and the process can realize humidity adjustment and efficient separation of the coking coal. The device comprises a linear driving device, a non-uniform pressure air box, a fluidized drying and grading chamber, gas material separation chambers and a large-particle coal collecting chamber and is characterized in that: the gas material separation chambers are positioned on both sides and the tail end side of the fluidized drying and grading chamber respectively; the linear driving device is connected with the bottom of the non-uniform pressure air box; an air distribution plate is arranged between the top of the non-uniform pressure air box and the fluidized drying and grading chamber; and a plurality of small-particle coal scraper plates are arranged above the air distribution plate and lead to the gas material separation chambers. The device and the process have the advantages of capability of effectively solving blocking and material leaking problems on the air distribution plate, uniform fluidization, remarkable drying effect, high thermal efficiency, good fluidized bed delamination and high separation accuracy. Moreover, the small-particle coal scraper plate has the advantages of simple structure, low failure rate and remarkable separation effect.

Description

technical field [0001] The invention relates to a vibrating fluidization device and a fluidization process for humidity control and classification of coking coal, belonging to the field of coking coal fluidization and humidity adjustment. Background technique [0002] The particle size classification technology of coking coal is subordinate to the selective crushing process, which combines crushing and screening (or wind separation) according to the hardness difference of coal types and lithofacies composition in coking coal materials, and according to the requirements of different crushing particle sizes. At the same time, it is also called lithofacies crushing process. Using this process can make the particle size of the coal material more uniform, not only eliminates large particles but also prevents over-fine crushing, and makes the inert components reach an appropriate fineness. [0003] Coking coal humidity control technology is to remove part of the moisture of the c...

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Problems solved by technology

[0005] The humidity control and classification technology of coking coal combines the advantages of coal humidity control technology and selective pulverization technology. At present, the public reports related to this technology include Chinese patent documents CN101063059A "moving partition fluidized bed", CN1834560A "semi-boiling fluidized bed". Bed Pneumatic Separation Dryer", the present invention quotes the entire content of these two patent documents as background technology, their shortcomings are: 1) the air distribution plate is blocked and material leakage; 2) fluidization is uneven, hot air flow Short circuit, resulting in poor drying effect and low thermal efficiency; 3) poor stratification of fluidized bed, low separation accuracy; 4) complex structure of scraper machine, high failure rate

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