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A method of estimating the dust load of an esp, and a method and a device of controlling the rapping of an esp

A control device and measurement device technology, applied in the field of rapping devices, can solve the problems of increasing ESP investment and operating costs, and achieve the effect of reducing the increase in emissions

Active Publication Date: 2010-01-13
ANDRITZ AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although increasing the number of zones can effectively reduce emissions, it will also increase the investment and operating costs of the ESP

Method used

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  • A method of estimating the dust load of an esp, and a method and a device of controlling the rapping of an esp
  • A method of estimating the dust load of an esp, and a method and a device of controlling the rapping of an esp
  • A method of estimating the dust load of an esp, and a method and a device of controlling the rapping of an esp

Examples

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Embodiment Construction

[0037] figure 1 An electrostatic precipitator (ESP) 1 is schematically shown viewed in side cross-section. figure 2 The same electrostatic precipitator 1 is shown viewed from above. The dust collector 1 has an inlet 2 for a flue gas 4 and an outlet 6 for a flue gas 8, the flue gas 4 contains dust particles, and the flue gas 8 has removed most of the dust particles. For example flue gas 4 may come from a boiler in which coal is fired. The precipitator 1 has a housing 9 in which a first zone 10 , a second zone 12 , a third and last zone 14 are provided. Each zone 10, 12, 14 has discharge and collection electrode plates known in the art such as US Patent No. 4,502,872, which is incorporated herein by reference.

[0038] from figure 2 As can be clearly seen in , each zone 10, 12, 14 is divided into two parallel independent units called bus sections. A bus section is defined as having at least one dust collecting electrode plate, at least one discharge electrode and at least...

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Abstract

A method of controlling the rapping of at least one collecting electrode plate (30) of an electrostatic precipitator (1) comprises applying, by means of a power source (32), a voltage between said at least one collecting electrode plate (30) and at least one discharge electrode (28), measuring the sparking rate between said at least one collecting electrode plate (30) and said at least one discharge electrode (28), and controlling, using the measured present sparking rate, the rapping of said at least one collecting electrode plate (30).

Description

technical field [0001] The invention relates to a method of controlling the rapping of at least one collecting electrode plate of an electrostatic precipitator. [0002] Furthermore, the invention relates to a method of estimating the current load of dust particles present on at least one collecting electrode plate of an electrostatic precipitator. [0003] The invention also relates to a device for controlling the rapping of at least one collecting electrode plate of an electrostatic precipitator. [0004] Furthermore, the invention also relates to a device for estimating and controlling the dust particle load on at least one collecting electrode plate of an electrostatic precipitator. Background technique [0005] The dust particles contained in the flue gas produced by the combustion of coal, oil, industrial waste, domestic garbage, peat, biomass, etc. are usually called fly ash. The emission of dust particles to the ambient air needs to be kept at a low level, so an el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/34B03C3/86
CPCB03C3/763B03C3/34B03C3/86
Inventor A·卡尔松S·A·博伊登
Owner ANDRITZ AB
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