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Method and device for gas sampling pre-treatment for gas detecting

A pretreatment device and gas sampling technology, which is applied in the direction of sampling device and test sample preparation, etc., can solve the problems of reducing system use efficiency, increasing maintenance workload, increasing maintenance workload, etc., and achieves a small amount of engineering maintenance , improve the efficiency of use, reduce the effect of cleaning the filter

Inactive Publication Date: 2007-03-07
贵州聚科技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This increases the workload of maintenance on the one hand, and reduces the efficiency of the system on the other hand; moreover, some tiny sticky particles may pass through the filter, thereby polluting the downstream gas measurement chamber and other devices, which not only further increases maintenance workload, which may also lead to a reduction in measurement accuracy

Method used

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  • Method and device for gas sampling pre-treatment for gas detecting
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  • Method and device for gas sampling pre-treatment for gas detecting

Examples

Experimental program
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Embodiment 1

[0025] As shown in Fig. 1, Fig. 3 to Fig. 5, a device for implementing the gas sampling pretreatment method applied to gas monitoring of the present invention includes a sampling device and a pretreatment device. The sampling device is a prior art, and will not be repeated here. The pretreatment device includes a cavity 1, a heating device, a heating and filtering device, a fixing device and a filtering device. The cavity 1 is cylindrical. The heating device includes a heating filter, an electrode 3, a heating body 2 and a heating wire (not shown), the electrode 3 is installed on the heating body 2, and the heating body 2 is two semi-cylindrical metal sheets and surrounds the cavity The outer periphery of the body 1, the heating wire wraps around the heating body 2. The heating and filtering device includes a filter screen 4 and brackets 5, 7, the filter screen 4 is installed inside the cavity 1, brackets 5 are installed on both sides of the filter screen 4, and the two brac...

Embodiment 2

[0028] As shown in Fig. 2 and Fig. 3, a device for implementing the gas sampling pretreatment method applied to gas monitoring of the present invention is different from Embodiment 1 in that there is no heating and filtering device, the first One and second fixing parts, and the heating device is installed on the periphery of the cavity 1 .

[0029] This example also discloses a method for removing tar in flue gas, that is, the working process of the above-mentioned device. The difference from Example 1 is that there is no heating and filtering step in step b.

Embodiment 3

[0031] As shown in FIG. 1 , FIG. 3 to FIG. 6 , a multi-component gas monitoring system includes a sampling preprocessing device 21 and an analysis device 22 . The sampling pretreatment device is installed on the measured gas pipeline 20 and connected with the analysis device 22 . The concrete structure of described sampling pretreatment device 21 is identical with embodiment 1, also comprises back blowing device simultaneously, and described back blowing device is connected with the filtering device in described sampling pretreatment device 21, comprises back blowing gas source 23, Valve 24 and trachea.

[0032] The working mode of the above-mentioned multi-component gas analysis system is: the flue gas in the measured gas pipeline 20 is sampled and pretreated by the sampling pretreatment device 21, thereby removing sticky particles such as dust and tar in the sampled flue gas, and the tar The removal method of isoviscosity particles is the same as that of Embodiment 1; final...

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Abstract

This invention discloses one gas sampling pre-processing method for gas monitoring, which comprises the following steps: a, acquiring sample gas from the device or tube to be tested; b, heating the sample gas to certain temperature to make the viscous particles; c, filtering the aged particles from the sample gas. This invention also discloses one gas sample pre-process device, which comprises the sample device fixed on the device or tube and pre-process device composed of chamber, heating device and filter device to flow the sample gas over the said chamber.

Description

technical field [0001] The present invention relates to a gas sampling pretreatment method and device applied to gas monitoring, in particular to a method for sampling gas in a measured device or pipeline and heating viscous particles such as tar in the sampled gas (hereinafter referred to as sample gas). A method and device for removing sticky particles in sample gas by filtering after aging. Background technique [0002] At present, more and more attention is paid to the monitoring of process gas and exhaust gas in the fields of iron and steel, waste incineration, etc. Correspondingly, gas monitoring systems have also been more and more widely used in these fields. [0003] In many occasions, the gas monitoring system adopts the technical route of sampling method. The gas in the measured device or pipeline is first sampled, filtered, and then passed into the gas measurement chamber for measurement, so as to obtain the concentration of each measured component in the measur...

Claims

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Application Information

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IPC IPC(8): G01N1/34G01N1/22
Inventor 谢正春仇宁光刘罡
Owner 贵州聚科技术服务有限公司