A coal-fired power plant sludge blending system and its intelligent supply method

A coal-fired power plant, sludge technology, applied in the direction of combustion method, fuel supply adjustment, combustion type, etc., can solve the problem of exceeding the upper limit of treatment, and achieve accurate and controllable sludge supply, high reliability, high efficiency and fast feedback control Effect

Active Publication Date: 2016-06-22
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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Problems solved by technology

[0004] However, the level of harmful substances contained in sludge is far higher than that of raw coal, and the blending of raw coal with sludge will greatly increase the level of pollutants produced after fuel combustion, and may even exceed the treatment limit of the existing pollutant control devices in power plants

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  • A coal-fired power plant sludge blending system and its intelligent supply method
  • A coal-fired power plant sludge blending system and its intelligent supply method
  • A coal-fired power plant sludge blending system and its intelligent supply method

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Embodiment Construction

[0025] Such as figure 1 As shown, the coal-fired power plant sludge blending system of the present invention includes a pulverizing system, a coal feeder conveyor belt 7 for transporting raw coal, a screw feeder 9 for transporting sludge, a boiler furnace 1, and a chimney 6 And the flue connected between the boiler furnace 1 and the chimney 6. The outlet of the screw feeder 9 is set above the conveyor belt 7 of the coal feeder, and the conveyor belt 7 of the coal feeder puts the raw coal together with the sludge output by the screw feeder 9 into the pulverizing system, and the pulverizing system will Sludge and raw coal are pulverized into fuel powder and then blown into the boiler furnace 1 for combustion; the flue gas generated in the boiler furnace 1 passes through the flue and then is discharged from the chimney 6, in which an economizer 2, an air preheater 3 and A pollutant control device for removing flue gas pollutants, the pollutant control device includes an electros...

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Abstract

The invention discloses a coal-fired power plant sludge blending system and its intelligent supply method. The intelligent supply method calculates the optimal Real-time sludge supply flow, and then control the screw feeder to output the sludge to the coal feeder conveyor belt according to the optimal real-time sludge supply flow. The present invention ensures the up-to-standard discharge of pollutants under the condition of making full use of the calorific value of the sludge, and realizes the most economical operation of sludge mixed combustion under the safe operation of the power plant and the pollutant discharge level reaches the standard, and has the advantages of economical efficiency, high reliability and low pollution. The advantages of accurate and controllable sludge supply, and greatly reduce the pollutants produced by sludge treatment and reduce the cost of coal burning in power plants.

Description

technical field [0001] The invention relates to a coal-fired power plant sludge blending combustion system and an intelligent supply method thereof. Background technique [0002] Sewage sludge contains a large number of organic pollutants, as well as potentially toxic and harmful components such as pathogenic bacteria, heavy metals, and carcinogenic chemicals. With the acceleration of urbanization in my country, the urban sewage treatment rate has increased year by year. The output has also increased sharply. After the sludge without proper treatment enters the environment, it will bring secondary pollution to the water body and the atmosphere, which not only reduces the effective treatment capacity of the sewage treatment system, but also poses a serious threat to the ecological environment and human activities. At present, how to treat sludge in a harmless and resourceful manner has become an increasingly important issue. Incineration treatment is a main method to effectiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/00F23K3/02F23N1/00F23J15/02
CPCY02E20/12
Inventor 殷立宝李晋达徐齐胜高正阳
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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