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On-line VOC (Volatile Organic Compounds) monitor

A monitor and detected technology, which is applied in the direction of phase influence characteristic measurement, etc., can solve the problems of not knowing the respective content of VOC, reducing the sensitivity of the instrument, and not being able to monitor volatile organic compounds, so as to achieve zero point calibration and cleaning, and avoid zero point The effect of offset, good repeatability

Inactive Publication Date: 2014-12-03
FOSHAN HEYUAN ACTIVATED CARBON REGENERATION TECH +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing VOC detection instruments with continuous online monitoring function have certain limitations in terms of stability, repeatability, moisture resistance, durability, etc. This limitation leads to inaccurate monitoring results
Furthermore, the existing VOC detection instruments, such as PID (photoion detector) can only monitor some volatile organic compounds, but cannot monitor all volatile organic compounds, and the existing VOC detection instruments can only monitor The total VOC content, without knowing the respective content of the components contained in VOC, resulting in inaccurate monitoring results
In addition, PID (photoion detector) is easily affected by moisture in the detected gas, which reduces the sensitivity of the instrument and leads to poor stability of the detected value

Method used

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  • On-line VOC (Volatile Organic Compounds) monitor
  • On-line VOC (Volatile Organic Compounds) monitor
  • On-line VOC (Volatile Organic Compounds) monitor

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0050] see figure 1 , the present invention provides a first embodiment of a VOC online monitor 100, including: a sampling unit 1 for collecting and sampling the detected gas; a VOC detection unit for detecting the VOC concentration of the detected gas 2. A data processing unit 3 for processing and analyzing the VOC concentration detected by the VOC detection unit 2; a communication unit 4 for realizing data transmission and remote control.

[0051] It should be noted that, in the embodiment of the present invention, the gas to be detected is a volatile organic compound (Volatile Organic Compounds, VOC).

[0052] see figure 2 , the sampling unit 1 includes: a gas absorption port 11 for inhaling the detected gas; a zero gas absorption port 12 for inhaling clean ai...

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Abstract

The invention discloses an on-line VOC (Volatile Organic Compounds) monitor. The on-line VOC monitor comprises a sampling unit, a VOC detection unit, a data processing unit and a communication unit, wherein the VOC detection unit comprises a light source generator, an inductor and a photodetector; the light source generator is used for generating light; the inductor is used for changing the refractive index of the light by being in contact with a detected gas; the photodetector is used for measuring the light reflected by the inductor; and the inductor comprises a reflective base plate and a detection membrane arranged on the reflective base plate. The on-line VOC monitor disclosed by the invention can be used for carrying out on-line continuous monitoring, monitoring the total content of VOC and monitoring the respective contents of compositions contained in the VOC and has excellent sensitiveness, stability, repeated reproductivity, continuous monitoring property, wet resistance and durability, and guarantees the accuracy of monitoring results.

Description

technical field [0001] The invention relates to the technical field of environmental protection monitoring, in particular to an environmental protection on-line monitor for VOC concentration monitoring using the IER method. Background technique [0002] VOC is the English abbreviation of Volatile Organic Compounds (Volatile Organic Compounds), which usually refers to organic compounds that are easily volatile at room temperature. The more common ones are benzene, toluene, xylene, ethylbenzene, styrene, formaldehyde, TVOC (carbohydrates with 6-16 carbons), ketones, alcohols, etc. These compounds are volatile and lipophilic, and are widely used Used in industrial fields such as footwear, toys, paints and inks, adhesives, cosmetics, interior and automotive decoration materials. VOC reacts with nitrogen oxides under the action of sunlight and heat, and the resulting ozone is one of the main pollutants in the atmosphere. Moreover, VOC has a huge impact on human health, can dama...

Claims

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Application Information

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IPC IPC(8): G01N21/45
Inventor 曾昭健梁文智廖天星土井润一山本弘信
Owner FOSHAN HEYUAN ACTIVATED CARBON REGENERATION TECH
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