A device and method for simply preparing VOC gas

A kind of gas, simple technology, applied in the field of VOC gas preparation, can solve the problems of high cost, long cycle, cumbersome steps, etc., and achieve the effect of convenient use

Pending Publication Date: 2018-04-17
上海神开气体技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional weighing method not only takes a long time, but the steps are cumbersome and take up a lot of equipment
In addition, it takes about a week to order a bottle of gas, and the cost is about several thousand
For users who are in urgent need of use, there are disadvantages of long cycle and high cost

Method used

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  • A device and method for simply preparing VOC gas

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Embodiment Construction

[0029] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.

[0030] Such as figure 1 As shown, the present invention provides a simple device for preparing VOC gas, which includes: a hollow cavity 1, which is provided with an air inlet conduit 2 communicated with it respectively, for filling nitrogen into the cavity 1; A gas outlet conduit 3 is used to discharge air and excess nitrogen in the cavity 1, and a sample conduit 4 is used to add liquid VOC and extract the VOC gas prepared in the cavity 1; the intake conduit 2 And the gas outlet conduit 3 is provided with an opening and closing device; the sample conduit 4 is provided with a rubber plug 6 . The inlet conduit 2 can be directly connected to the outlet valve of the nitrogen cylinder through a hose. ...

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Abstract

The invention discloses a simple device and method for preparing VOC gas. The device comprises: a hollow cavity body, on which an air inlet duct communicated with the cavity is respectively arranged for charging nitrogen gas into the cavity; an air outlet duct, It is used to discharge the air and excess nitrogen in the cavity, and a sample conduit is used to add liquid VOC and extract the prepared VOC gas into the cavity; the inlet and outlet conduits are provided with opening and closing devices; the A rubber plug is provided on the sample conduit. The present invention can be directly operated on the glass container, and the mole number of nitrogen is calculated according to the pressure of one atmosphere, so no high-pressure nitrogen gas distributing device and electronic balance are needed, and the operation is simple and easy. It is easy to use and can prepare the required concentration at any time. It is fast and can be used immediately. No mixing device is needed to mix well, just shake it by hand.

Description

technical field [0001] The invention relates to the field of VOC gas preparation, in particular to a simple device and method for preparing VOC gas. Background technique [0002] VOC is the English abbreviation of volatile organic compounds (volatile organic compounds), which has a huge impact on human health. When the VOC gas in the room reaches a certain concentration, people will feel headache, nausea, vomiting, fatigue, etc. in a short period of time. Serious consequences such as memory loss. [0003] In order to conduct research on VOC gas detection and treatment, environmental testing departments and scientific research institutes need a large amount of standard VOC gas. The VOC gas prepared in the laboratory is usually mixed with organic compounds (such as benzene, toluene, xylene, dimethyl disulfide, ethanethiol, methyl chloride, methyl sulfide and other volatile organic compounds) in nitrogen. gas. [0004] At present, the preparation of VOC gas is basically car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 刘艳
Owner 上海神开气体技术有限公司
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