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Method and system for discharging an electrostatic precipitator

A technology of electrostatic precipitator and grounding system, applied in the direction of chemical instruments and methods, electrostatic separation, electrostatic effect separation, etc., can solve the problems of not meeting market expectations of cleaning speed and thoroughness

Active Publication Date: 2016-08-03
ANDRITZ AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing technologies for cleaning accumulated particulate matter out of collecting electrodes have not met market expectations related to speed and thoroughness of cleaning, etc.

Method used

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  • Method and system for discharging an electrostatic precipitator

Examples

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Embodiment Construction

[0056] figure 1 One embodiment of a system 100 for venting an electrostatic precipitator 10 in accordance with the present disclosure, such as described above, is shown.

[0057] Such as figure 1 As shown, the electrostatic precipitator 10 includes an inlet 2 for a gas stream 4 containing particulate matter, such as fly ash, and an outlet 6 for a gas stream 8 from which the majority of the particulate matter has been removed. The gas stream 4 may be, for example, flue gas from a furnace in which coal is burned. The electrostatic precipitator 10 has a housing 9 in which are disposed a plurality of precipitator subunits, the so-called fields 40A, 40B and 40C, each of which is capable of extracting energy from a gas flow passing therethrough during operation. Removes particulate matter. Typically a large number of fields are used.

[0058] Each field 40A, 40B, and 40C includes at least one collector electrode 42 , at least one emitter electrode 44 , and a controllable power s...

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PUM

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Abstract

For the sake of improving cleansing of an electrostatic precipitator (10) having a collecting electrode (42) and an emission electrode (44), the present disclosure teaches reducing a voltage applied between the collecting electrode (42) and the emission electrode (44) upon occurrence of a spark between said collecting electrode (42) and said emission electrode (44).

Description

technical field [0001] The present disclosure relates to a method for cleaning an electrostatic precipitator and a system for cleaning an electrostatic precipitator. Background technique [0002] Electrostatic precipitators are well known for removing particulate matter from gas streams. For example, electrostatic precipitators are commonly found in industrial facilities where the combustion of coal, oil, industrial waste, household waste, peat, biomass, etc. produces fumes containing particulate matter such as fly ash. [0003] Electrostatic precipitators operate by creating an electrostatic field between at least two electrodes. The first of these electrodes usually has a plate-like shape and is connected to a power source in order to carry a positive charge. Such electrodes are often designated as collecting electrodes or plates. The second of these electrodes is usually implemented in the form of a wire and is connected to the power supply so as to carry a negative ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C3/76
CPCB03C3/68B03C3/763
Inventor A·约翰逊
Owner ANDRITZ AB