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Coal slime drying system and drying technique thereof

A technology of drying system and drying process, which is applied in the direction of drying solid materials, dry cargo handling, and drying gas arrangement, etc., which can solve the problems of large equipment volume, large floor area, and complicated process, so as to achieve high dispersion efficiency and improve drying efficiency. Efficiency and low energy consumption

Active Publication Date: 2017-02-01
YANKUANG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the low-temperature drying technology solves the problem of wasting resources, its equipment is bulky, heavy, and occupies a large area, so the investment cost of the plant and infrastructure is high. In addition, the low-temperature drying technology equipment has complex processes and limited low-temperature steam sources, etc. reason, and therefore cannot be used on a large scale

Method used

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  • Coal slime drying system and drying technique thereof
  • Coal slime drying system and drying technique thereof
  • Coal slime drying system and drying technique thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Such as figure 1 As shown, the coal slime drying system described in this embodiment includes a coal slime buffer bin 2, a screw feeder 3, a coal slime crusher 4, a material separator 5, a drying and dispersing machine 6, a cyclone separator 7, Bag filter 8 and induced draft fan 10, in figure 1 Among them, 1 represents wet coal slime (before drying), and 9 represents coal powder particles (coal powder particles formed after wet coal slime is dried).

[0053] Coal slime buffer bin 2 is used to receive and store wet coal slime 1, the outlet end of coal slime buffer bin 2 is connected to the inlet end of screw feeder 3, the outlet end of screw feeder 3 is connected to the inlet end of coal slime crusher 4 connection, wherein: the wet coal slime 1 in the coal slime buffer bin 2 is sent to the coal slime crusher 4 through the screw feeder 3, and in the coal slime crusher 4, the wet coal slime is pre-crushed to form coal slime particles. The size of the wet slime 1 enterin...

Embodiment 2

[0067] Such as figure 2 As shown, the embodiment of the present invention also provides a coal slime drying system, including a coal slime buffer bin 2, a screw feeder 3, a coal slime crusher 4, a material separator 5, a drying and breaking machine 6, a cyclone separation Device 7, bag filter 8 and induced draft fan 10, in figure 2 Among them, 1 represents the wet coal slime before drying, and 9 represents the dried coal slime (coal powder).

[0068] In this embodiment, what the air inlet of the drying and dispersing machine 6 introduces is the low-temperature flue gas of the power plant, and the drying and dispersing machine 6 uses the low-temperature flue gas to dry and disperse the wet coal slime, which improves the efficiency of drying and dispersing. scattered efficiency.

[0069] The connection relationship and function description of each component in the coal slime drying system provided by the embodiment of the present invention are the same as those in the first ...

Embodiment 3

[0071] Such as image 3 As shown, the embodiment of the present invention also provides a coal slime drying system, including a coal slime buffer bin 2, a screw feeder 3, a coal slime crusher 4, a material separator 5, a drying and breaking machine 6, a cyclone separation Device 7, bag filter 8 and induced draft fan 10, in image 3 Among them, 1 represents the wet coal slime before drying, and 9 represents the dried coal slime (coal powder).

[0072] The coal slime drying system provided by the embodiment of the present invention also includes a plate heat exchanger 11, in which the normal temperature gas and the hot waste water / hot steam discharged from the power plant are input into the plate heat exchanger 11, and the hot waste water / hot steam is exchanged with the normal temperature air , the cold waste water produced is directly discharged, and the hot air (also called "low temperature air") produced enters the drying and breaking machine 6 through the air inlet of the d...

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Abstract

The invention provides a coal slime drying system and a drying technique thereof. The coal slime drying system comprises a coal slime breaker, a drying beater and a pulverized coal collection device. The inlet end of the coal slime breaker is used for receiving wet coal slime. The outlet end of the coal slime breaker is used for being connected with the inlet end of the drying beater. The drying beater is provided with an air inlet. The outlet end of the drying beater is connected with the pulverized coal collection device.

Description

technical field [0001] The invention relates to the technical field of wet coal slime drying, in particular to a coal slime drying system and a drying process thereof. Background technique [0002] Coal slime is a by-product produced in the process of coal washing in coal preparation plants. It has the characteristics of high moisture content, high viscosity, high water holding capacity and low calorific value, so it is difficult to realize industrial application and has been rejected by power users for a long time. Except for a small part that is used for civilian use, most of the rest are used for combustion in coal slime boilers to generate electricity, or piled up as waste. [0003] At present, when using the above-mentioned coal slime, the power plant adopts the mixed combustion method, that is, the coal slime and coal powder are mixed and burned, but due to the high water content, poor fluidity and low calorific value of the coal slime, it often brings operational diff...

Claims

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Application Information

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IPC IPC(8): F26B1/00F26B25/00F26B21/00F26B11/12F26B25/04B02C21/00F23K1/00
CPCB02C21/00F23K1/00F23K2201/10F23K2201/20F23K2201/501F26B1/005F26B11/12F26B21/002F26B25/002F26B25/04
Inventor 付亮亮白丁荣宋瑞岭王振平刘春谢强珍白麦营
Owner YANKUANG GRP CO LTD
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