On-line monitoring system for volatile organic compounds (VOCs)
A volatile organic compound and monitoring system technology, which is applied in the direction of measuring devices, material separation, sampling devices, etc., can solve the problems of low automation and error of detection results, and achieve the effect of ensuring safety, ensuring accuracy and reliability, and avoiding air pollution
Pending Publication Date: 2021-03-12
浙江哈米尔顿环保科技有限公司
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[0006] Aiming at the problems of low automation and large detection result error in the VOCs monitoring system existing in the prior art, the present invention provides an online monitoring system for volatile organic compounds (VOCs)
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[0028] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.
[0029] see figure 1 As shown, an online monitoring system for volatile organic compounds includes a sampling system 2, a pretreatment system 3, a VOC analyzer, a gas source, an auxiliary monitoring system 8, a data acquisition system and a calibration system.
[0030] The sampling system 2 adopts the method of completely extracting the full high temperature to collect the sample gas. The sampling probe 21 extends into the appropriate position of the flue gas channel 1 or the chimney, and the rear end of the sampling probe 21 is provided with a coarse filter, which is used for preliminary analysis of the collected sample gas. Filtration, the filtration accuracy is 2 microns, the output end of...
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The invention discloses an on-line monitoring system for volatile organic compounds (VOCs). The on-line monitoring system comprises a sampling system, a pretreatment system, a VOC analyzer, a gas source, an auxiliary monitoring system, a data acquisition system, a calibration system and an electric control system; the sampling system comprises a sampling probe extending into a flue gas channel; the output end of the sampling system is connected with the input end of the pretreatment system through a heat tracing pipeline; the pretreatment system comprises a fine filter and a sampling pump; thesampling pump controls the sampling system to collect sample gas from the flue gas channel; the output end of the pretreatment system is used for feeding finely filtered sample gas into the VOC analyzer through the heat tracing pipeline, so that the finely filtered sample gas can be subjected to component analysis; the electric control system supplies power to the devices and controls the devicesto work. High temperature is realized in the whole process from sampling to detection and analysis, so that water removal is not needed, meanwhile, through transmission of the heat tracing pipeline,the safety of the system can be guaranteed, sample gas losses are effectively avoided, and the accuracy and reliability of monitoring data are guaranteed.
Description
technical field [0001] The invention belongs to the detection technology of volatile organic compounds, and in particular relates to an online monitoring system of volatile organic compounds (VOCs). Background technique [0002] VOCs refer to organic compounds with a saturated vapor pressure greater than 133.32Pa at normal temperature and a boiling point below 50-260°C at normal pressure, or any volatile organic solid or liquid at normal temperature and pressure. [0003] According to the chemical structure, VOCs can be divided into eight categories: alkanes, aromatics, alkenes, halocarbons, esters, aldehydes, ketones and others. Its main components are hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, including benzene series, organic chlorides, Freon series, organic ketones, amines, alcohols, ethers, esters, acids and petroleum hydrocarbon compounds. [0004] Most VOCs have irritating odor or odor, which can cause people's sensory disc...
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IPC IPC(8): G01N1/22G01N30/02G01N30/06G01N33/00B01D53/86B01D53/72
CPCG01N1/2258G01N1/2205G01N30/02G01N30/06G01N33/0047G01N33/0063B01D53/8668G01N2001/2261
Inventor 王勇叶倩燕
Owner 浙江哈米尔顿环保科技有限公司