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Acceleration method of birdnesting ultrafine partieles of coal and equipment

An ultra-fine particle, coal-burning technology, applied in the field of energy and environment, can solve the problems of entering ultra-fine particles, low capture rate of ultra-fine particles, human and environmental hazards, etc. Effect

Inactive Publication Date: 2005-01-12
HUAZHONG UNIV OF SCI & TECH
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  • Description
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Problems solved by technology

[0003] At present, more than 90% of the large-scale coal-fired boiler units in my country use electrostatic precipitators as dust removal devices. Although the dust removal efficiency of electrostatic precipitators can be as high as 99%, the capture rate of electrostatic precipitators for ultrafine particles is low. A large amount of ultrafine particles enter the atmosphere, and at the same time, ultrafine particles are enriched with many toxic heavy metal components, which are more harmful to humans and the environment

Method used

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  • Acceleration method of birdnesting ultrafine partieles of coal and equipment
  • Acceleration method of birdnesting ultrafine partieles of coal and equipment
  • Acceleration method of birdnesting ultrafine partieles of coal and equipment

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Embodiment Construction

[0018] figure 1 It shows that the method used in the present invention is to spray the agglomeration accelerator from the tail flue in front of the electrostatic precipitator. figure 2 A schematic diagram showing the composition of the device of the present invention. The device of the present invention is composed of a liquid storage tank, a metering pump, a mixing chamber, an air compressor, a double-flow nozzle, etc. It can be seen from the figure that the agglomeration accelerator flowing out from the accelerator liquid storage tank The flow rate is controlled by a metering pump, and the solution fully mixed with industrial water is sent into the flue in front of the electrostatic precipitator by the strong pressure of the air compressor, thereby agglomerating the smoke and dust.

[0019] image 3 It is a schematic diagram of a dual-flow nozzle, which includes nozzle-1, filter plug-2, liquid storage tank (oil pump) connecting pipe-3, air compressor connecting pipe-4, noz...

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Abstract

A method and apparatus for promoting the coagulation of superfine particles generated by burning coal features that the liquid distributing pump or mixer is used to proportionally mixing water with coagulation promoting agent to obtain a solution, and the solution is atomized by air compressor and then sent to flue before electrostatic duster, where the atomized liquid drops with high adhesive activity can adhere the dust particles to coagulate them together.

Description

technical field [0001] The invention belongs to the technical field of energy and environment, and relates to a new method for reducing the emission concentration of smoke and dust under the condition of the existing electrostatic precipitator in a coal-fired power plant. Background technique [0002] At present and for quite a long time in the future, China is the country with the largest coal consumption and production in the world. In 2002, the coal output was nearly 1.4 billion tons, and in 2003 it exceeded 1.6 billion tons. In 2020, the coal output is expected to reach 2.5-3.3 billion tons . The characteristics of my country's resources determine that the coal-based energy structure will not change for a long time. And coal accounts for a large proportion of primary energy consumption, up to about 65%. The problem of environmental pollution caused by coal burning in our country has become quite serious. 90% of smoke and dust come from coal burning. In 2001, the amount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D51/02B03C3/01
Inventor 张军营郑楚光
Owner HUAZHONG UNIV OF SCI & TECH
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