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Dual-region tubular high-temperature electrostatic dedusting device

An electrostatic precipitator and tube-type technology, applied in the field of environmental protection dust removal equipment, can solve problems such as difficult to maintain corona phenomenon, difficult to solve electrical insulation problems, narrowed voltage range, etc., to achieve the effect of enhanced electric field, low surface work function, emission The effect of high current

Inactive Publication Date: 2014-09-17
NANJING NORMAL UNIVERSITY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

At high temperature, the voltage range of its corona operation is reduced, and the corona phenomenon is difficult to maintain; because of its high operating voltage (up to 50~100kV), it is difficult to solve the electrical insulation problem at high temperature

Method used

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  • Dual-region tubular high-temperature electrostatic dedusting device

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] like figure 1 As shown, a dual-zone tubular high-temperature electrostatic precipitator of the present invention is divided into two parts: a charging zone 1 and a dust collecting zone 2 .

[0015] The charging area 1 includes an emitting cathode 3, an anode tube 4 and a high voltage power supply. The emission cathode 3 is made of a rare earth tungsten thermal composite functional material added with rare earth oxide (0.55% cerium oxide and 1.65% yttrium oxide), and an emission cathode 3 suspended in the center of the anode tube 4 is connected to the high-voltage The cathodes of the power supply are connected and used as the emission cathode. According to the power of the high-voltage power supply, a single emission cathode can be expanded into multiple or arrays.

[0016] The structure of the dust collecting area 2 is basica...

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Abstract

The invention discloses a dual-region tubular high-temperature electrostatic dedusting device. The tubular high-temperature electrostatic dedusting device comprises an electrical charge region and a dust collecting region, wherein the electrical charge region comprises an emitting cathode, an electrical charge anode circular tube and an electrical charge high-voltage power supply; an emitting cathode is suspended on the center of the electrical charge anode circular tube, and is connected with a cathode of the electrical charge high-voltage power supply, and the electrical charge anode circular tube is grounded; the dust collecting region comprises a dust collecting cathode, a dust collecting anode circular tube and a dust collecting high-voltage power supply; the dust collecting cathode is suspended at the center of the dust collecting anode circular tube, and is connected with a cathode of the dust collecting high-voltage power supply, and the dust collecting anode circular tube is grounded; the electrical charge anode circular tube is communicated with the dust collecting anode circular tube. On one hand, the device provided by the invention effectively utilizes the flue gas waste heat, and saves energy sources, and on the other hand, due to the high density of emitted current of the device, the collecting efficiency on dust, especially fine particles, is improved greatly.

Description

technical field [0001] The invention relates to an environment-friendly dust removal device, in particular to a dual-zone tubular high-temperature electrostatic dust removal device. Background technique [0002] As a main content of high-temperature purification technology, high-temperature dedusting technology is not only the key to the development of the current integrated gasification combined cycle power generation system (IGCC) and pressurized fluidized bed combustion technology (PFBC), but also for the development of more advanced coal-fired combined cycle Power generation technology is particularly important. In addition, in the chemical industry, some drying systems use high-temperature flue gas at about 1100°C as the medium to directly dry materials. The high-temperature flue gas containing impurities must be purified before it can be put into use. [0003] Research on high temperature dust removal technology began in the 1960s. In the research of high-temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/06B03C3/40
Inventor 蒋振松董寰顾中铸
Owner NANJING NORMAL UNIVERSITY
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