Chemical agglomeration accelerator for removing coal-burning fine particles and its application method

A technology for fine particles and chemical agglomeration, which is applied in chemical instruments and methods, separation methods, and dispersed particle separation, etc. It can solve problems such as unsuitable for large-scale industrial production, complex composition of agglomerating agent solution, corrosion of flue equipment, etc., to achieve agglomeration Significant effect, low price, and no harm to the environment

Active Publication Date: 2016-05-11
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical agglomeration flocculants are generally composed of binders, surfactants, water and other additives. Agglomeration flocculants can promote the agglomeration of fine particles in front of the electrostatic precipitator to large particles within a certain range, but the agglomeration efficiency is relatively limited, only 30 %, and the formula contains acidic substances such as phosphoric acid, which will cause a certain degree of corrosion to the flue equipment. In addition, the composition of the agglomerating agent solution is complex, and there are certain requirements for the pH of the solution. The configuration process is complicated, and it is not suitable for large-scale industrial production.

Method used

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  • Chemical agglomeration accelerator for removing coal-burning fine particles and its application method

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preparation example Construction

[0014] The preparation method of the agglomeration accelerator: add industrial water into the mixing container, then add polydimethyldiallyl ammonium chloride under constant stirring, after the polydimethyldiallyl ammonium chloride is completely dissolved, then Add sorbitan fatty acid ester and stir until completely dissolved.

[0015] The agglomeration accelerator is stored independently according to different components before mixing, and can also be stored as a high-concentration solution in proportion (add industrial water in proportion to dilute when used). But the time should not be too long, preferably a week.

[0016] Carry out chemical agglomeration technology transformation for dust removal equipment in power plants, steel mills, and cement plants, adjust the proportion of different components of agglomeration accelerators according to different flue gas conditions and coal-fired fly ash characteristics, determine the amount of agglomeration agent, and arrange them i...

Embodiment 1

[0019] Polydimethyldiallyl ammonium chloride: 0.001%

[0020] Sorbitan fatty acid ester: 0.001%

[0021] The rest is water.

Embodiment 2

[0023] Polydimethyldiallyl ammonium chloride: 0.005%

[0024] Sorbitan fatty acid ester: 0.01%

[0025] The rest is water.

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Abstract

The invention discloses a chemical agglomeration accelerator for removing coal-burning fine particles, which is composed of polydimethyldiallylammonium chloride, sorbitan fatty acid ester and water, wherein the agglomeration accelerator Among them, the mass percentage of the polydimethyldiallylammonium chloride is 0.001%-0.01%, and the mass percentage of the sorbitan fatty acid ester is 0.001%-0.1%. The invention also discloses the use method of the chemical aggregation accelerator. The chemical agglomeration accelerator can not only effectively promote the agglomeration and flocculation of fine particles in the flue gas channel to form large particles, but also perform integrated removal of heavy metals in the flue gas, improve the efficiency of fine particle removal by the dust collector, and effectively alleviate environmental problems.

Description

technical field [0001] The invention relates to an agglomeration accelerator for fine particles, in particular to a chemical agglomeration accelerator for removing coal-fired fine particles. At the same time, the present invention also relates to the use method of the chemical aggregation accelerator. Background technique [0002] my country is currently the world's largest coal producer and consumer, and coal-burning fly ash particles are one of the main sources of air pollutants in my country. The pollution problem of coal-burning fine particulate matter (PM2.5) is even more serious. Fine particles are usually enriched with a large amount of toxic trace elements and organic pollutants, and are easily inhaled by the human body, seriously endangering human health. At the same time, these fine particles are also an important factor in inducing major environmental events such as global climate change, smog events, and ozone layer destruction. my country promulgated the new "...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D51/02B03C3/013
Inventor 盘思伟张凯刘亚明张军营赵永椿郭沂权
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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