Mobile low-temperature adsorption concentration-thermal desorption device and application method thereof

A thermal desorption, mobile technology, applied in the preparation of test samples, etc., can solve the problems of inability to achieve good concentration effect, poor maintenance, device damage, etc., and achieve the effect of increased heating rate, convenient operation, and reduced time consumption

Inactive Publication Date: 2014-06-11
TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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Problems solved by technology

[0004] The aforementioned devices that use cold trap concentration-thermal desorption for pretreatment mostly use refrigerants such as liquid oxygen, liquid nitrogen, or dry ice to manufacture their low-temperature environments. The disadvantage of this method is that it takes a long time and is costly; The semiconductor refrigeration chip is used to cool and wind the heating wire on the sampling tube to generate high temperature. High temperature will also reduce its life, cause damage to the device, and poor maintainability

Method used

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  • Mobile low-temperature adsorption concentration-thermal desorption device and application method thereof
  • Mobile low-temperature adsorption concentration-thermal desorption device and application method thereof
  • Mobile low-temperature adsorption concentration-thermal desorption device and application method thereof

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Embodiment Construction

[0032] In order to make the present invention easier to understand, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] figure 1 It is a structural schematic diagram of the mobile adsorption concentration-thermal desorption device of the present invention.

[0034] refer to figure 1 , the mobile adsorption concentration-thermal desorption device of the present invention is composed of a mobile cold trap 17 and a control system and a gas path part connected to it through a control line, and the mobile cold trap 17 includes a heating module, a refrigeration module and a moving mechanism;

[0035] figure 2 , image 3 It is a schematic diagram of the mobile cold trap in the present invention being in cooling and heating states respectively; Figure 4 Yes figure 2 , image 3 Schematic diagram of the structure of the heating block.

[0036] refer to figure 2 , Figure 4...

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Abstract

The invention discloses a mobile adsorption concentration-thermal desorption device and an application method thereof. The device comprises a control system, a gas circuit part and a mobile cold trap consisting of a heating module, a refrigerating module and a mobile mechanism. The method comprises the steps of control system starting, operation of the refrigerating module, sample collection, operation of the heating module, sample desorption, pipeline cleaning, and the like. The device has the advantages that a refrigerating fin is easy to damage after long-time overheating, and the gas adsorption and gas enrichment efficiency is effectively improved. In comparison with the prior art, the device shortens the adsorption and analysis time, reduces the time consumption, lowers the cost and improves the concentration efficiency.

Description

technical field [0001] The present invention relates to an atmospheric environment sample pretreatment device, more specifically, the present invention relates to a mobile adsorption concentration-thermal desorption device used in the atmospheric environment sample pretreatment device and its application method. Background technique [0002] As we all know, industries such as petrochemical, pharmaceutical and rubber manufacturing are typical industries that emit odorous gases, and odor pollution ranks second among the seven major public hazards in the world. [0003] At present, there are about 4,500 known malodorous gases. Due to their complex composition and the content is only a few parts per billion or even lower, it is difficult to directly detect them, and sample pretreatment is required. Most of the existing pretreatment methods adopt the method of cold trap concentration-thermal desorption, that is, to use the characteristics of the solid adsorbent in the sampling tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/40G01N1/42
Inventor 李昌建王铁铮张菲菲李伟芳王亘韩萌邹克华曹阳耿静刘博
Owner TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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