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Dust removal method of pulse type high-frequency power supply

A high-frequency power supply, pulsed technology, applied in the direction of external electrostatic separators, etc., to achieve the effect of improving work efficiency

Inactive Publication Date: 2019-04-12
FUJIAN QINGSHAN PAPER INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a dust removal method of a pulsed high-frequency power supply to solve the technical problem of environmental protection treatment of waste gas recovered from papermaking alkali

Method used

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  • Dust removal method of pulse type high-frequency power supply
  • Dust removal method of pulse type high-frequency power supply
  • Dust removal method of pulse type high-frequency power supply

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown in Table 1: Through technical improvement measures, process transformation, and modulation and demodulation voltage in different degrees, the dust removal efficiency of the electric field is improved. Taking the transformation of the 3# alkali furnace pulsed high-frequency power supply in the No. 2 alkali recovery plant as an example, the energy-saving and emission-reduction effects of the alkali recovery furnace with 875 tons of solids / day are studied. Adjust the output power factor of the power supply by 95% by adjusting the bus voltage and primary current control output of the pulsed high-frequency power supply. analyze. The discharge concentration of smoke and dust at the outlet of 2# electrostatic precipitator and 3# electrostatic precipitator is maintained at 13.2mg / m 3 -15.0mg / m 3 , with an average concentration of 14.0mg / m 3 . The power consumption of the electrostatic precipitator has been significantly reduced. The total high-fre...

Embodiment 2

[0037] Such as figure 1 As shown in Table 1: Through technical improvement measures, process transformation, and modulation and demodulation voltage in different degrees, the dust removal efficiency of the electric field is improved. Taking the transformation of the 3# alkali furnace pulsed high-frequency power supply in the No. 2 alkali recovery plant as an example, the energy-saving and emission-reduction effects of the alkali recovery furnace with 875 tons of solids / day are studied. By adjusting the bus voltage and primary current of the pulse type high-frequency power supply, the secondary voltage and secondary current of the output are controlled to adjust the output power factor of the power supply to 96%. analyze. The outlet smoke and dust emission concentration of 2# electrostatic precipitator and 3# electrostatic precipitator are both maintained at 13.0mg / m 3 -14.8mg / m 3 , with an average concentration of 13.8mg / m 3 . The power consumption of the electrostatic pr...

Embodiment 3

[0039] Such as figure 1 As shown in Table 1: Through technical improvement measures, process transformation, and modulation and demodulation voltage in different degrees, the dust removal efficiency of the electric field is improved. Taking the transformation of the 3# alkali furnace pulsed high-frequency power supply in the No. 2 alkali recovery plant as an example, the energy-saving and emission-reduction effects of the alkali recovery furnace with 875 tons of solids / day are studied. By adjusting the bus voltage and primary current of the pulse-type high-frequency power supply to control the output secondary voltage and secondary current, when the output power factor of the power supply is ≥96.46%, the emission concentration analysis of the dust at the outlet of the electrostatic precipitator and the power supply are carried out according to the smoke and dust turbidity meter. Power analysis. The outlet smoke and dust emission concentration of 2# electrostatic precipitator ...

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Abstract

The invention discloses a dust removal method of a pulse type high-frequency power supply. The dust removal method comprises the following steps that (1) a high-frequency power supply is installed through process improvement, and an electrostatic dust removal system is connected; (2) a modulation and demodulation technology is adopted, a rectifier transformer is driven, and a high-frequency powersupply is output; (3) the dust removal efficiency and the electricity-saving efficiency of an electrostatic dust remover with the power factors of 95%, 96% and 97% are set; (4) the optimal power factor of the electrostatic dust remover is set by investigating the dust removal efficiency and the electricity-saving efficiency of different power factors; and (5) and the pulse type high-frequency power supply electrostatic dust remover is controlled through the optimal power factor to perform dust removal. According to the method, the technical modification measures are adopted, the process is improved, and the voltage is modulated and demodulated in different degrees, so that the dust removal efficiency of the electric field is improved.

Description

【Technical field】 [0001] The invention belongs to the technical field of dust removal, and in particular relates to a dust removal method for a pulse-type high-frequency power supply. 【Background technique】 [0002] As the country pays more and more attention to environmental protection, the Ministry of Environmental Protection has formulated stricter atmospheric dust emission standards for different enterprises, and the emission concentration of different industries must be reduced by 30-60mg / M3. The environmental protection standards are constantly improving, and electric dust collectors have been built. Most of the dust emissions from the equipment do not meet the environmental protection standards. A technical transformation is necessary. To expand the capacity of electrostatic precipitators or increase the number of electrostatic precipitators will not only cost a lot of money, but also may stop production and occupy space. In some places, it is even impossible to impl...

Claims

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Application Information

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IPC IPC(8): B03C3/04
CPCB03C3/04
Inventor 蔡文华陈元恭连建强陈庆汉
Owner FUJIAN QINGSHAN PAPER INDUSTRY CO LTD
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