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Single-zone plate type high-temperature electrostatic dust collector

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

Inactive Publication Date: 2011-06-01
苏州南师大智慧创意产业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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; and 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 As shown, the single-zone plate high-temperature electrostatic precipitator is mainly composed of four parts: anode plate 1, cathode plate 2, emitter electrode 3 and high-voltage power supply. Two stainless steel plates are grounded and placed in parallel as the anode plate 1; a stainless steel plate with the same shape and size as the anode plate 1 is connected to the cathode of the high-voltage power supply as the cathode plate 2; the cathode plate 2 is suspended from the two anode plates 1 The center is parallel to the anode plate 1; the disc-shaped emitter electrode 3 is evenly inlaid on both sides of the cathode plate 2, and the emitter electrode 3 is made of barium-tungsten thermionic emission material doped with cerium oxide.

[0014] Among them, the barium tungsten thermionic emission material doped with cerium oxide is the addition of rare earth oxide CeO 2 The barium tungsten composite functional material, its composition is the CeO of mass p...

Embodiment 2

[0017] Basically the same as Example 1, the difference is: the doped rare earth oxide CeO 2 The barium tungsten composite functional material, its composition is the CeO of mass percent 1.1% 2 And 98.9% tungsten powder, the pores of the porous tungsten matrix doped with ceria are impregnated with aluminate. The single-zone plate-type high-temperature electrostatic precipitator of this embodiment has an actual measured dust removal efficiency of 95.1% under the conditions of a pressure of 0.1 MPa, a temperature of 690°C, and a voltage of 6000 V.

Embodiment 3

[0019] Basically the same as Example 1, the difference is: the doped rare earth oxide CeO 2 The barium tungsten composite functional material, its composition is the CeO of mass percent 1.2% 2 And 98.8% tungsten powder, the pores of the porous tungsten matrix doped with ceria are impregnated with aluminate. The single-zone plate-type high-temperature electrostatic precipitator of this embodiment has an actual measured dust removal efficiency of 78.2% under the conditions of a pressure of 0.1 MPa, a temperature of 566°C, and a voltage of 6000 V.

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Abstract

The invention discloses a single-zone plate type high-temperature electrostatic dust collector and belongs to the technical field of environmental-protection dust collecting equipment. The equipment mainly comprises positive plates, a negative plate, emitter electrodes, a high-temperature power supply, wherein two stainless steel plates are grounded and parallelly arranged to serve as positive plates; a stainless steel plate which has the same shape and size as the positive plates is connected with the negative pole of a high-temperature power supply to serve as the negative plate; the negative plate is suspended in the middle of the two positive plates and parallel to the positive plates; and all disc-like emitter electrodes are embedded on the two sides of the negative plate. In the invention, a single-zone plate type structure is adopted, so the structure of the equipment is compact and the electrical field is uniform, and the stability and reliability of the high temperature operation of the equipment are improved; and the emitter electrode is made of cerium oxide-doped barium-tungsten hot electron emitting material, which contributes to improving dust collection efficiency and prolonging the service life of the equipment.

Description

technical field [0001] The invention relates to an electrostatic precipitator, in particular to a single-zone plate-type electrostatic precipitator working at high temperature, which belongs to the technical field of environmental protection dust removal equipment. 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 (IGCC) power generation technology, pressurized fluidized bed combustion (PFBC) combined cycle power generation technology, but also for the development of more advanced combustion. Coal 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 u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/08B03C3/40
Inventor 顾中铸许津津董黎莹刘娟娟
Owner 苏州南师大智慧创意产业有限公司
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