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Pulverized coal furnace combustion explosion prevention method

A technology for pulverized coal and coal rods is applied in the field of explosion-proof combustion of pulverized coal into a furnace, which can solve the problems of flash combustion and explosion, high dust concentration and unsafety, and achieve the effects of saving coal, good safety and convenient operation.

Inactive Publication Date: 2017-05-31
XINSHAO GUANGXIN ELECTRICAL INSULATING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The raw coal particles are too dry, too fine, and the pulverized coal with a particle diameter of less than 1 mm will cause the dust concentration in the furnace to be too high after entering the fluidized bed of the boiler, causing a flash explosion, commonly known as "blasting", which is very unsafe.

Method used

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  • Pulverized coal furnace combustion explosion prevention method

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Embodiment

[0010] Example: such as figure 1 As shown, the sludge deposited in the sewage treatment station is pumped to the sludge thickening tank 1 through the sludge pump 21, and an appropriate amount of flocculant is added to the thickening tank. Go to the sewage treatment station for treatment, the remaining sludge concentration is about 3-5%, and then use a screw pump to inject the diaphragm filter press 2 for dehydration treatment, and the filtered water is returned to the sewage treatment station, and the filtered mud cake has a moisture content of 47-50%. , put it into the mud cake bucket with a loader for use. The metering and crushing screw 4 is set under the mud cake bucket. After the mud cake is primary crushed by the metering and crushing screw 4, the particle size is ≤30mm, and then enters the crushing and conveying screw 5 for secondary high-speed crushing.

[0011] The fine coal is sifted out through the inclined screen 16 to the coal hopper 17, and the metering conveyor...

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Abstract

The invention relates to a pulverized coal furnace combustion explosion prevention method. Pulverized coals and dried paper mill sludge mixtures are extruded as coal rods; and the coal rods are mixed with broken coals to feed in a boiler for combustion. The pulverized coal furnace combustion explosion prevention method can effectively eliminate blasting, is excellent in safety, saves fuels, and reduces the pollution.

Description

technical field [0001] The invention relates to an explosion-proof method for burning pulverized coal into a furnace. Background technique [0002] Raw coal particles are too dry, too fine, and pulverized coal with a particle diameter of less than 1 mm will cause excessive dust concentration in the furnace after entering the fluidized bed of the boiler, causing a flash explosion, commonly known as "blasting", which is very unsafe. The main solid content of papermaking sludge is fine fibers, mineral powder and colloid, and its calorific value is about 1142 kcal. A coal rod machine is used to squeeze the mixture of fine coal powder and papermaking sludge into coal rod fuel and enter the boiler for incineration. , which not only solves the problem of "blasting" in the furnace, but also saves coal fuel. [0003] Papermaking sludge is the terminal product of wastewater treatment in the papermaking process. Its organic matter (mainly cellulose) content is 62%, ash content is 38%,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K1/00F23M11/00F23C10/18F23G7/00F23C10/22
CPCF23K1/00F23C10/18F23C10/22F23G7/00F23G2209/12F23M11/00
Inventor 魏雅琴龚龑唐跃平
Owner XINSHAO GUANGXIN ELECTRICAL INSULATING MATERIALS