Direct current high voltage high frequency pulse dual-pole corona grating static coagulation dust removal device

Abstract

The invention relates to a direct current high voltage high frequency pulse dual-pole corona grating static coagulation dust removal device. The technical scheme is that an outlet end of a static coagulation device (2) is fixedly connected with the inlet end of a static dust removal device (9), 2-20 high voltage pole grating frames are arranged in a shell of the static coagulation device (2), the number of grounding pole grating frames in the shell is one more than the number of the high voltage pole grating frames, the high voltage pole grating frames and the grounding pole grating frames are suspended at the inner wall of a top plate of the shell of the static coagulation device (2) by metal suspension rods (6) and insulators (7) and are equidistantly and alternatively installed in parallel, high voltage pole wires (4) in the high voltage pole grating frames and the grounding pole wires (14) in the grounding pole grating frames are equidistantly and alternatively arranged in a staggering mode, and a high voltage end of a direct current high voltage high frequency pulse power supply (3) is connected with the high voltage pole grating frames and a low voltage end of the direct current high voltage high frequency pulse power supply (3) is connected with the grounding pole grating frames. The direct current high voltage high frequency pulse dual-pole corona grating static coagulation dust removal device is simple in structure and good in system safety, and the static coagulation effect and dust removal efficiency on fine particles can be further improved.

Description

technical field [0001] The invention belongs to an electrostatic coagulation device, in particular to a DC high-voltage high-frequency pulse bipolar corona grid electrostatic coagulation and dust removal device. Background technique [0002] Electrostatic coagulation and dust removal is a purification method that first aggregates charged fine dust particles into larger particles through electrostatic force and then removes dust. Electrostatic coagulation and dust removal are considered to be one of the most effective methods to control PM2.5 and even PM1 (Yang Linjun. Combustion source fine particle pollution control technology, Chemical Industry Press, Beijing: 2011). There are three main types of electrostatic coagulation technology: electrostatic coagulation in a constant electric field; electrostatic coagulation in a low-frequency alternating electric field; electrostatic coagulation in a high-frequency alternating electric field. [0003] 1. Electrostatic condensation...

AI Technical Summary

Problems solved by technology

The research on electrostatic condensation of bipolar charged dust in a constant electric field began in the late 1980s (Eliasson B et al. Coagulation of bipolar charged aerosol particles in a flue condenser. Journal of Aerosol Science, 1987, 18( 8): 869-872), the electrostatic coagulation of bipolar charged dust in a constant electric field has obvious disadvantages: (1) Because each charged particle flow is unipolar, the particles are mutually repulsive, which is not conducive to Coagulation; (2) In order to make the positively charged particle flow and the negatively charged particle flow can be more fully mixed, the condensation zone is longer

[0014] (1) Multiple AC and DC power supplies are required to realize the charging of dust particles and the bipolar electrostatic condensation, so the initial investment of equipment is large and the operating cost is high;

[0015] (2) The electrostatic coagulation and dust removal system in the traditional alternating electric field is complicated, and it is necessary to set up a pre-charged area, or use a combination of AC and DC electrodes, which is large in size, complex structure;

[0016] (3) Regardless of whether it is a low-frequency AC high-voltage power supply or a high-frequency AC high-voltage power supply, the main problem in application is poor reliability and safety

AC high-voltage power supply has high insulation requirements for equipment and is prone to failure

AC high-voltage power supply is more dangerous than DC high-voltage power supply

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