DC superposed pulse electric precipitation method

A technology of DC superimposition and pulse electricity, which is applied in the application of electrostatic dust removal generated by high-power power supply devices, in the field of high-voltage electrostatic dust removal, to achieve high power supply efficiency, expand the application range, and reduce the effect of secondary flying

Inactive Publication Date: 2010-10-06
BEIJING BODXY ENERGY CONSERVATION TECH & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a direct current superimposed pulse electric dust removal method to solve the technical problem of providing a reliable and practical electric dust removal method for industrial treatment of various flue gas dust and fine particles.

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Embodiment Construction

[0017] Hardware of the present invention see figure 1 , including DC power supply Ⅰ, pulse power supply Ⅱ, coupling circuit Ⅲ and electrostatic precipitator reaction device Ⅳ. A sampling control unit can also be set to sample the voltage acting on the dedusting reactor and feed back to fine-tune the power supply voltage. Refer to Fig. 2 for the voltage waveform on the reaction device, wherein Fig. 2(a) is a positive polarity voltage, and Fig. 2(b) is a negative polarity voltage.

[0018] Among them, DC power supply Ⅰ and pulse power supply Ⅱ are independent and adjustable. In the power supply, the DC voltage generated by the DC power source I and the pulse voltage generated by the pulse power source II are superimposed through the coupling circuit, and act on the dust removal reaction device IV. The pulse voltage combines the charge with the flue gas dust and fine particles, and then the electrostatic adsorption effect of the electric field generated by the DC voltage adsorb...

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Abstract

The invention discloses a DC superposed pulse electric precipitation method. High-voltage current is generated by a DC power circuit, pulse waveforms are generated by a pulse power supply and have rise time in a range of millisecond to nanosecond, and then the high-voltage current and the pulse waveforms are superposed by a coupling circuit to act together on a dedusting reactor. The method has the advantages of overcoming the defect that conventional electric precipitators are supplied with power only by a DC power supply, reducing power consumption, reducing secondary rise caused by rapping, improving the efficiency of high specific resistance dust and reducing dust collection areas of the precipitators, and is more suitable for the industrial application of the purification and treatment of a great amount of smoke.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrostatic dust removal, in particular to the application field of electrostatic dust removal by generating an electrostatic field based on a high-power power supply device input by AC voltage regulation. Background technique [0002] At present, the widely used high-voltage electrostatic precipitator power supply adopts high-voltage DC power supply, which is input by the AC line voltage of 380 volts. After AC voltage regulation by the thyristor, the voltage is boosted by the power frequency step-up transformer, and then through the high-voltage silicon stack full-wave rectification. , to generate a negative high voltage, which acts between the corona wire and the electrode plate of the electrostatic precipitator to generate an electric field, and use its electrostatic adsorption effect to achieve the purpose of purifying dust and fine particles in the flue gas. Its advantages are simple s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/66
Inventor 姜学东王绪棠李彬彬宋宇朱翔苏超刘洋
Owner BEIJING BODXY ENERGY CONSERVATION TECH & RES
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