Sampling and detection system and method of sulfur trioxide in coal fired boiler smoke gas

A sulfur trioxide and coal-fired boiler technology, which is applied in the field of pollutant sampling and detection, can solve problems such as detection result errors, achieve the effects of easy temperature, simple detection method, and error avoidance

Pending Publication Date: 2018-07-20
HUANENG POWER INTERNATIONAL +2
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  • Description
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Problems solved by technology

The controlled condensation method recommended by the current electric power standard DL/T998-2006 has many implementation details that are likely to cause operational errors, such as the use of quartz wool for

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  • Sampling and detection system and method of sulfur trioxide in coal fired boiler smoke gas

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Embodiment Construction

[0029] The present invention is described in further detail below in conjunction with accompanying drawing:

[0030] refer to figure 1 , the sampling and detection system of sulfur trioxide in the coal-fired boiler flue gas of the present invention comprises a heating sampling gun 1, a heating filter 2, an electric heating pipe 3, a condenser pipe 4, a constant temperature water bath box 5, a gas washing bottle 7 and Vacuum pump 12, wherein, the condensation pipe 4 is provided with a serpentine pipe, the gun head of the heating sampling gun 1 is located in the flue, and the outlet of the heating sampling gun 1 is connected to one end of the serpentine pipe through the heating filter 2 and the electric heat tracing pipe 3 successively. connected, the other end of the serpentine tube is connected with the inlet of the gas washing bottle 7, and the outlet of the gas washing bottle 7 is connected with the inlet of the vacuum pump 12, wherein a wet flow meter 9 and Barometer, cons...

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Abstract

The invention discloses a sampling and detection system and method of sulfur trioxide in coal fired boiler smoke gas. The system comprises a heating sampling gun, a heating filter, an electric heat tracing pipe, a condensation pipe, a constant temperature water bath box, a gas washing bottle and a vacuum pump, wherein a coiled pipe is arranged in the condensation pipe; a gun head of the heating sampling gun is positioned in a flue; an outlet of the heating sampling gun sequentially passes through the heating filter and the electric heat tracing pipe to be connected with one end of the coiled pipe; the other end of the coiled pipe is communicated with an inlet of the gas washing bottle; an outlet of the gas washing bottle is communicated with an inlet of the vacuum pump; a wet type flowmeter and an air pressure meter are arranged between the gas washing bottle and the vacuum pump; the constant temperature water bath box is communicated with the condensation pipe. The system and the method can accurately detect the concentration of SO3 in the smoke gas.

Description

technical field [0001] The invention belongs to the technical field of pollutant sampling and detection, and relates to a sampling and detection system and method for sulfur trioxide in flue gas of a coal-fired boiler. Background technique [0002] my country's coal consumption ranks first in the world, about half of which is used for power plant boilers. Sulfur in coal forms a small amount of SO during combustion 3 pollutants. SO 3 Although the content in the flue gas is small, it will significantly increase the acid dew point of the flue gas, and combine with the water vapor in the flue gas to form H 2 SO 4 , will cause serious low-temperature corrosion to the equipment downstream of the air preheater and the flue, and the NH that escapes from the SCR denitrification device 3 combined to form NH 4 HSO 4 Blocking the air preheater will affect the safety of boiler operation. In order to reduce the low-temperature corrosion of the downstream equipment and flue of the ...

Claims

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Application Information

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IPC IPC(8): G01N1/24G01N33/00
CPCG01N1/24G01N33/0004
Inventor 徐党旗陆军文成明周刚张知翔梁仕铓罗怀宇苏林邹小刚
Owner HUANENG POWER INTERNATIONAL
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