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Device and method for inhibiting spontaneous combustion of open-air coal piles

A coal pile and open-air technology, which is applied in the field of devices for suppressing spontaneous combustion of open-air coal piles, can solve the problems of inconvenient application of coal-fired power plants, inconvenient operation, complex structure, etc., and achieves reduction of oxidation reaction rate, convenient operation, and sufficient gas source. Effect

Active Publication Date: 2014-12-10
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device required by this scheme and method has complex structure, high energy consumption, and inconvenient operation, which is not convenient for application in coal-fired power plants.

Method used

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  • Device and method for inhibiting spontaneous combustion of open-air coal piles
  • Device and method for inhibiting spontaneous combustion of open-air coal piles

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Embodiment Construction

[0024] Such as figure 1 and figure 2 As shown, the device for suppressing the spontaneous combustion of open-pit coal piles of the present invention includes a water pool 5 that is arranged under the open-pit coal pile 1 and is covered with a porous or slit cover plate 2, so that the gas in the pool can flow from the cover The holes or gaps of the plate flow from bottom to top; the bottom of the pool is provided with an air distribution pipe 6, and the air distribution pipe 6 (see the typical structure figure 2 ) placed in the pool 5 and submerged below the water surface, the hole diameter on the air distribution pipe is 1-3mm, the hole spacing is 3-5mm, the air distribution pipe is connected to the air blower 3 through the air supply pipe 4, and the cover plate 2 The edge of 5 and several supports 7 standing in the pool are supported, and a liquid level gauge 8 is installed in the pool to measure the water level therein. Drainage pump 10 is connected with the drainage pip...

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Abstract

A device for inhibiting spontaneous combustion of open-air coal piles comprises a water tank, not full. The water tank covered with porous or slit cover plates is arranged below an open-air coal pile. A distribution and discharge pipe externally connected with a blower through an air supply pipe is arranged in the water in the water tank. A level meter is further disposed in the water tank. A water supplement pipe connected with a tap water source or other water sources is disposed on one side of the water tank. A drain pipe provided with a filter and connected with a drainage pump is disposed at the bottom of the water tank. The invention further provides a method for inhibiting spontaneous combustion of open-air coal piles. By the use of the device and method, the amount of oxygen absorbed by coal of the coal piles can be reduced, oxidization speed can be decreased, and adsorption heat and reaction exotherm are decreased. The coal piles can be cooled by air flowing in voids, so that spontaneous combustion of the coal piles is inhibited. The device manufactured according to the method has the advantages of simple structure, low energy consumption, convenience in operation, sufficient air source and the like and is conveniently applicable to coal-fired power plants.

Description

technical field [0001] The invention relates to a device for suppressing spontaneous combustion of open coal piles. The invention also relates to a method for suppressing spontaneous combustion of an open coal pile by using the device. Background technique [0002] In large coal-fired power plants, in order to ensure normal production, it is necessary to reserve hundreds of thousands of tons to hundreds of thousands of tons of coal. The storage period can be as long as several months, and generally it can only be stacked in the open air. Spontaneous combustion often occurs in these open-pit coal piles, especially for raw coal with high volatile content, due to the gradual increase in temperature caused by the heat accumulation from slow oxidation. Analysis and statistical data show that the heat loss of gas coal and long-flame coal with a volatile content greater than 35% is 4.9% on average after 6 months of storage, while the heat loss of lean coal with a volatile content ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G3/02A62C3/06
Inventor 陈刚苏伟陈天生张宏亮
Owner GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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