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System for removing fine particulate matters in gas-phase mixture

A technology for fine particles and mixtures, applied in the separation of dispersed particles, chemical instruments and methods, auxiliary pretreatment, etc., can solve the problems of large floor space, waste of resources, secondary pollution, etc.

Inactive Publication Date: 2016-12-07
GUODIAN NEW ENERGY TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the terminal fine treatment and capture equipment represented by the wet electrostatic precipitator can meet the requirements for the treatment of fine particles and meet the latest national emission standards, but the investment cost is high, the floor area is large, and the corrosion resistance requirements for equipment materials Strict, not suitable for hydrophobic flue, and easy to cause secondary pollution and waste of water, electricity and other resources

Method used

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  • System for removing fine particulate matters in gas-phase mixture
  • System for removing fine particulate matters in gas-phase mixture
  • System for removing fine particulate matters in gas-phase mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 2 As shown, a system for removing fine particles in a gas-phase mixture includes a flue gas generation system, a flocculation agglomerator 9, a flue gas particle separation system, and a flocculation solution preparation and delivery system; all flue gas generation systems are connected to the flocculation agglomerator 9, and the flocculation The solution preparation delivery system is connected to the flocculation agglomerator 9, and the flue gas particle separation system is connected to the flocculation agglomerator 9; through the flocculation solution preparation delivery system, chemical substances are added to the flue gas to make fine particles aggregate in the flocculation agglomerator, Increase the particle size and quality of fine particles, and then remove the flocculated fine particles through the flue gas particle separation and capture system.

[0054] The flue gas generation system generates dust-laden flue gas and transports it to the flo...

Embodiment 2

[0061] A certain amount of flocculant solution with a concentration of 10mg / L and 0.2wt% fine particle solution (the surface of the fine particle is negatively charged, and the average particle diameter is D X 50=2.57μm) was mixed according to 20000:3, stirred at a speed of 300r / min for 1min, and the average particle size was measured to be 25.8μm.

Embodiment 3

[0063]A certain amount of flocculant solution with a concentration of 10mg / L and 0.2wt% fine particle solution (the surface of the fine particle is negatively charged, and the average particle diameter is D X 50=2.57μm) was mixed according to 20000:3, and stirred at a speed of 300r / min for 1min, and the average particle size was measured to be 16.7μm.

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Abstract

The invention relates to a system for removing fine particulate matters in gas-phase mixture. The system comprises a flue gas generation system, a flocculation reunion device, a flue gas particulate separation system and a flocculation solution preparation and delivery system. The flue gas generation system is connected with the flocculation reunion device, the flocculation solution preparation and delivery system and the flue gas particulate separation system are connected with the flocculation reunion device, and the flue gas particulate separation system is further connected with an emptying pipeline. Chemical substances are added into the gas-phase mixture through the flocculation solution preparation and delivery system to enable the fine particulate matters to gather in the flocculation reunion device, particle size or mass of the fine particulate matters is increased, and then the fine particulate matters after flocculation are removed through the flue gas particulate separation system. The system has the advantages that the fine particulate matters are treated by means of the chemical agglomeration principle to enable the size or mass of the fine particulate matters to be increased, convenience is brought to follow-up conventional dust removal equipment for removal, and the system is simple in process flow, high in efficiency, low in cost and easy for wide popularization.

Description

technical field [0001] The invention relates to a system for removing fine particles in a gas-phase mixture, which belongs to the technical field of environmental protection and pollution control, and is mostly applicable to the fields of removing fine particles in flue gas of coal-fired boilers in industrial and production processes. technical background [0002] PM2.5 is a fine particle with an aerodynamic diameter of less than 2.5. In recent years, fine particle pollution has become a prominent air pollution problem. Due to the small dust particle size and low sedimentation rate, fine particles have a long residence time in the air, and the specific surface area of ​​fine particles is large, and the surface is extremely easy to accumulate toxic and harmful substances, which is harmful to human health. my country is a country with coal as the main energy structure, and coal-fired boilers are one of the main reasons for the increase in the content of fine particulate matter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D51/04
CPCB01D51/04
Inventor 郭桦肖惠宁刘汉强陈昊然陈毅伟杜庶铭李庚达潘远凤孙振新杨阳
Owner GUODIAN NEW ENERGY TECH INST
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