Method for testing dust of inlet of coal-powder boiler electric dust remover

A technology of electrostatic precipitator and precipitator, which is applied in the direction of mass flow measurement device, indirect mass flowmeter, etc., can solve problems such as large deviation

Inactive Publication Date: 2013-10-09
YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST +1
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Problems solved by technology

[0003] The measurement of the amount of dust at the inlet is generally carried out by the method of constant velocity sampling, but due to the deviation of the tracking rate and the negative pressure at the flue, the measured value is usually smaller than the actual value, especially for high-concentration flue gas, the deviation is greater, resulting in There is a big problem in the calculation of the efficiency of the electrostatic precipitator

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  • Method for testing dust of inlet of coal-powder boiler electric dust remover

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Embodiment Construction

[0039] A method for testing dust at the inlet of a pulverized coal furnace electrostatic precipitator, the invention is characterized in that:

[0040] (1) The amount of dust at the inlet of the dust collector is the dust amount at the outlet of the boiler tail flue. When the boiler is equipped with only one inlet of the dust collector, the dust amount at the inlet of the dust collector is equal to the dust amount at the outlet of the boiler tail flue;

[0041] (2) Based on the principle of coal ash balance, the balance between the ash content of the boiler and the ash content of the boiler;

[0042] According to the principle of gray balance:

[0043] Q hf =Q in +Q lz +Q cjh (1)

[0044] Namely: Q in =Q hf -Q lz -Q cjh (2)

[0045] In formula (1): Q hf ——Amount of ash in the furnace, t / h;

[0046] Q in ——Ash volume at the inlet of dust collector, t / h;

[0047] Q lz ——ash content of slag, t / h;

[0048] Q cjh —Ash content of sedimentation as...

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Abstract

The invention provides a method for testing dust of an inlet of a coal-powder boiler electric dust remover. The amount of dust of an outlet of a boiler tail smoke channel is used as the amount of dust of the inlet of the dust remover, and when the dust remover for the boiler is provided with only one inlet, the amount of dust of the inlet of the dust remover is equal to that of dust of the outlet of the boiler tail smoke channel. Based on the fuel coal ash content balance principle, the boiler inlet ash content is in balance with boiler outlet ash content, and ash content in a boiler is calculated through fuel coal amount and the fuel coal ash content. Slagging ash amount is calculated through boiler slag amount and moisture content of boiler slag in a unit time of measurement. The method is based on the ash balance principle, and the amount of dust entering the inlet of the electric dust remover is calculated through measuring the inlet ash amount and outlet ash amount of the boiler.

Description

technical field [0001] The invention belongs to the technical field of electric power measurement, is suitable for calculating the dust amount at the inlet of a dust collector of a pulverized coal boiler equipped with a single dust collector, and can be used as an auxiliary test method for the performance of the dust collector. Background technique [0002] According to GB / T13931 "Electric Precipitator Performance Test Method", the calculation of electrostatic precipitator dust removal efficiency gravimetric method needs to measure the dust amount at the inlet and outlet of the electrostatic precipitator, and the inlet dust amount needs to be calculated by measuring the parameters at the inlet section of the electrostatic precipitator out, affected by the measurement section. [0003] The measurement of the amount of dust at the inlet is generally carried out by the method of isokinetic sampling, but due to the deviation of the tracking rate and the negative pressure at the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/86
Inventor 邱亚林赵明董鸿魁沈永庆杨丽毛天
Owner YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST
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