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Monitoring system for element in gas in pipeline and operation method thereof

A monitoring system and element technology, applied in the direction of measuring devices, preparation of test samples, color/spectral characteristic measurement, etc., can solve the problems of high cost, complex structure, troublesome system maintenance, etc., and achieve easy maintenance and high system reliability , save the effect of processing

Active Publication Date: 2011-06-22
FOCUSED PHOTONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it brings the disadvantages of complex structure, troublesome system maintenance and high cost

Method used

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  • Monitoring system for element in gas in pipeline and operation method thereof
  • Monitoring system for element in gas in pipeline and operation method thereof
  • Monitoring system for element in gas in pipeline and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] figure 2 A basic structural diagram of a monitoring system for elements in gas in a chimney according to an embodiment of the present invention is schematically given. Such as figure 2 As shown, the monitoring system includes:

[0048] Sampling probe 1, the sampling probe is installed on the chimney.

[0049] The first pipeline 2 and the air extraction device 3 , under the action of the air extraction device 3 , the gas in the chimney flows back into the pipeline after passing through the sampling probe 1 and the first pipeline 2 . A heat tracing module is arranged on the first pipeline 2 .

[0050] The second pipeline 4 , one end of the second pipeline 4 is opened in the first pipeline 2 , and the other end is connected to the element enrichment device 6 .

[0051] The element enrichment device 6 is used for enriching mercury, cadmium, arsenic and other elements in the sampled gas.

[0052] The measuring unit is used for measuring the enriched mercury, cadmium, ...

Embodiment 2

[0071] The monitoring system of element in the gas in the chimney is different from embodiment 1:

[0072] The monitoring system further includes a heating device, the heating device is arranged on the volume measuring device to prevent components in the gas from being precipitated and blocking the channel due to cooling down when passing through the volume measuring device, effectively prolonging the continuous working time of the volume measuring device, Reduced work maintenance.

Embodiment 3

[0074] The monitoring system of element in the gas in the chimney is different from embodiment 1:

[0075] 1. The volume measuring device adopts a diaphragm pump, so that under the action of the diaphragm pump, the gas passes through the small hole at the speed of sound.

[0076] 2, Figure 6 shows the basic structural diagram of the solution application unit in Embodiment 3 of the present invention, as Figure 6 As shown, the sulfur solution applying unit 22 is a sealed container containing sulfur solution, and the solvent is carbon disulfide. The filter membrane 12 moves between the supporting rollers 221, 222, 223, and passes through the sulfur solution in the container to keep hermetically sealed with the container, so as to prevent the solution in the container from being volatilized and discharged from the container.

[0077] 3. The detection unit is a cold vapor atomic absorption spectrometer.

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Abstract

The invention provides a monitoring system for an element in gas in a pipeline and an operation method thereof. The system comprises a sampling device, an element enrichment device, a measuring unit, a volume measuring device and an analysis unit, wherein the volume measuring device is arranged on the downstream side of the element enrichment device and is provided with an air inlet channel, an air exhaust channel and a low-pressure area forming module; the air inlet channel is communicated with the element enrichment device; a small hole is formed in the air inlet channel; the air inlet channel and the air exhaust channel are communicated in a low-pressure area; and the analysis unit is used for obtaining the content of the element in the gas in the pipeline according to output results of the measuring unit and the volume measuring device. The system has the advantages of high reliability, low cost, simple structure and the like.

Description

technical field [0001] The invention relates to the measurement of elements, in particular to the monitoring of elements in gas in pipelines and its operating method. Background technique [0002] Mercury is a highly toxic substance. Even if the mercury content in the environment is very low, it will accumulate into the human body through the food chain, thereby endangering human health. Therefore, there is an urgent need for methods that can rapidly and quantitatively detect trace amounts of mercury in the environment. [0003] figure 1 It shows the monitoring system of mercury element in the gas in the pipeline widely used in the prior art, such as figure 1 As shown, the monitoring system includes: a sampling probe 1 , pipelines 2 and 4 , an enrichment device 4 , an X-ray fluorescence spectrometer, an air extraction device 3 and 10 and a volume measurement device 9 . [0004] Mercury is volatile and remains in the gaseous state in many occasions, such as chimneys and pi...

Claims

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Application Information

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IPC IPC(8): G01N23/223G01N21/31G01N1/40
Inventor 叶华俊郭生良翁兴彪姜雪娇
Owner FOCUSED PHOTONICS
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