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Coal slime drying system and coal slime drying process

A drying system and coal slime technology, which is applied in the direction of drying solid materials, drying gas arrangement, heating to dry solid materials, etc., can solve the problems of high energy consumption and cost of microwave drying, and achieve the goals of improving use efficiency, protecting the living environment, and operating safely Effect

Active Publication Date: 2014-01-22
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the energy cost of microwave drying is high, and it is putting the cart before the horse to use converted high-quality secondary energy to dry low-quality primary energy

Method used

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  • Coal slime drying system and coal slime drying process
  • Coal slime drying system and coal slime drying process
  • Coal slime drying system and coal slime drying process

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Experimental program
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Embodiment Construction

[0042] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0043] Such as figure 1As shown, a kind of coal slime drying system provided by the present invention comprises the break-up pre-dryer 1 that is used for breaking up wet coal slime 100 and pre-drying preliminary Carry out the low-temperature drying furnace 2 of low-temperature drying with the wet coal slime 100 of preliminary predrying, be used for forming the dry coal slime formed after the low-temperature drying furnace 2 low-temperature drying is molded 5, be used for low-temperature drying furnace 2 is discharged A dust removal device 4 for recovering coal ash and a heating device 3 for supplying hot air below 250°C to the dispersing pre-dryer 1 and the low-temperature drying furnace 2. The dispersing pre-dryer 1 is connected to the low-temperature drying furnace 2, and the The upper part of the drying furnace 2 is connected w...

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Abstract

The invention provides a coal slime drying system. The coal slime drying system comprises a scattering pre-drying machine, a low-temperature drying oven, a molding machine, a dust removal device and a heat supply device which is used for supplying hot air with the temperature below 250 DEG C to the scattering pre-drying machine and the low-temperature drying oven. The scattering pre-drying machine is connected with the low-temperature drying oven. The upper portion of the low-temperature drying oven is connected with the dust removal device through an exhaust pipeline, and the lower portion of the low-temperature drying oven is connected with the molding machine. The heat supply device is connected with the scattering pre-drying machine and the low-temperature drying oven respectively through heat supply pipelines. The invention further provides a coal slime drying process. The coal slime drying process is safe in operation, high in efficiency, free form pollution and large in production quantity.

Description

technical field [0001] The invention relates to the technical field of wet coal slime drying, in particular to a coal slime low-temperature drying system and a new coal slime low-temperature drying process. Background technique [0002] The national annual output of coal slime is about 200 million tons. With the mining of coal year by year, there are more and more lean coal with high gangue content in coal reserves, more and more coal preparation plants are built, and the output of coal slime is also increasing. The characteristics of coal slime: small particles, high moisture content, high ash content, low calorific value, which is not conducive to combustion; wet stickiness and adhesion are not conducive to transportation; Dry coal slime is flying all over the sky, and a large amount of coal slime is lost due to erosion in rainy days, which seriously pollutes the environment. How to turn waste into treasure and develop cheap coal slime drying technology is a problem that...

Claims

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Application Information

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IPC IPC(8): F26B1/00F26B3/08F26B21/14F26B25/00C10L5/06
Inventor 侯丙林孙照亮
Owner CHNA ENERGY INVESTMENT CORP LTD
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