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Deep control system for multiple pollutants through wet static electricity and reinforced by pre-charging

A wet electrostatic, deep control technology, applied in electrostatic separation, electrostatic effect separation, external electrostatic separator, etc., can solve the problem that the pre-charging technology is not suitable for the application of wet electrostatic precipitator, etc., to overcome the corona suppression phenomenon, realize the Deep purification control, the effect of improving work performance

Inactive Publication Date: 2015-11-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are cases in the prior art that combine pre-charging appliances with electrostatic precipitators, they are mainly limited to dry-type electrostatic precipitators. The special flue gas environment behind the wet desulfurization tower makes the existing pre-charging technology unsuitable. Applied to wet electrostatic precipitator

Method used

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  • Deep control system for multiple pollutants through wet static electricity and reinforced by pre-charging
  • Deep control system for multiple pollutants through wet static electricity and reinforced by pre-charging
  • Deep control system for multiple pollutants through wet static electricity and reinforced by pre-charging

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A pre-charged enhanced wet electrostatic multi-pollutant depth control system such as figure 1 , figure 2 and image 3 As shown, the system includes a lye atomizing mixer 1, a pre-charger 10 and a wet electrostatic reactor 9 connected in sequence, and the pre-charger is installed at the entrance of the wet electrostatic reactor.

[0031] Such as image 3 As shown, a two-fluid atomizing nozzle 2 and a turbulent mixing plate 3 are installed inside the lye atomizing mixer. The two-fluid atomizing nozzle 2 is installed at the inlet of the lye atomizing mixer, and the turbulent mixing plate 3 is installed in the vertical direction inside the lye atomizing mixer. , same as "<" shape. The two-fluid atomizing nozzles are arranged in a staggered arrangement. When the atomization angle is 60°, the distance between the nozzles is 200mm.

[0032] The wet electrostatic reactor includes a corona electrode 11, a dust collector plate, a spray device 17, a circulating water system...

Embodiment 2

[0041] The concrete scheme of this embodiment is the same as embodiment 1, and the difference is:

[0042] The pre-charger includes a layer of airflow uniform distribution plate 19, and a row of corona pole lines are respectively arranged on both sides of the airflow uniform distribution plate, and the corona pole lines and the airflow uniform distribution plate are arranged at intervals.

[0043] The two-fluid atomizing nozzles in the lye atomizing mixer are arranged in series, and when the atomizing angle is 120°, the distance between the nozzles is 300mm.

[0044] The airflow uniform distribution plate of the pre-loading appliance is the anode plate, which is made of 316L stainless steel plate, with circular holes with a diameter of 30mm uniformly distributed, and a layer of airflow uniform distribution plate with an opening rate of 35%.

[0045] at 15,000Nm 3 Under the rated working condition of / h, the smoke and dust inlet concentration is 50-100mg / m 3 , entry SO 2 The...

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Abstract

The invention relates to dust removing equipment for coal-fired flue gas, particularly to a deep control system for multiple pollutants through wet static electricity and reinforced by pre-charging. The system comprises an alkali liquor atomizing mixer, a pre-charger and a wet static electricity reactor which are sequentially connected, wherein the pre-charger is mounted at the inlet of the wet static electricity reactor; double-fluid atomizing nozzles and turbulent flow mixing plates are mounted in the alkali liquor atomizing mixer; water outlets are formed in the lower part of the wet static electricity reactor and are connected with pipelines of a waste water tank, then a circulating water tank, an alkali liquor tank and an alkali liquor pump are sequentially connected to the waste water tank, the alkali liquor pump is connected with the double-fluid atomizing nozzles, sprinkling devices are arranged in the wet static electricity reactor, the circulating water tank is additionally provided with a water outlet pipeline which is connected with the sprinkling devices of the wet static electricity reactor, and a circulating filter pump is mounted on the water outlet pipeline. The system organically integrates the pre-charger and a wet electrostatic dust remover so as to realize the purpose of efficiently removing plaster fluid drops, dust particles, SO3, NOx, SO2 and the like behind a desulfurizing tower.

Description

technical field [0001] The invention relates to coal-fired flue gas dedusting equipment, in particular to a pre-charged enhanced wet electrostatic multi-pollutant depth control system. Background technique [0002] At present, the near-zero emission technology of coal-fired power plants has attracted great attention in China and has been widely recognized by the government and power generation companies. The use of wet electrostatic precipitators has become an important technology for controlling dust emissions. Wet electrostatic precipitators are usually used to remove particulate matter in saturated flue gas. They are usually arranged after the desulfurization tower in coal-fired power plants. After being charged in the strong corona field, it splits and further atomizes; the electric field force, the collision interception of the charged water mist, and the adsorption and condensation jointly capture the fine particles, and finally the particles reach the dust collector u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/013B03C3/16B03C3/34
Inventor 高翔郑成航骆仲泱岑可法倪明江张涌新王毅杨正大施正伦周劲松方梦祥程乐鸣王勤辉
Owner ZHEJIANG UNIV
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