Adsorption thermal desorption device

A desorber and adsorption heat technology, applied in the preparation of test samples, etc., can solve the problems of low heating efficiency, inability to efficiently detect volatile organic compounds, and inability to find technical solutions, and achieve the effect of improving temperature rise efficiency.

Pending Publication Date: 2017-09-05
苏州冷杉精密仪器有限公司
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Problems solved by technology

A thermal desorber is disclosed in the Chinese patent CN100336576C, and the scheme adopted is heating with a built-in heating rod. The disadvantage of this scheme is that the heating efficiency is not high, and the purpose of efficiently detecting volatile organic compounds in the atmosphere cannot be achieved.
In the current disclosed other technical documents, it is still impossible to find a good technical solution to this problem

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  • Adsorption thermal desorption device

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Embodiment Construction

[0011] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] figure 1 The following description describes alternative embodiments of the invention to teach those skilled in the art how to implement and reproduce the invention, and to simplify or omit some conventional techniques.

[0013] figure 1 Schematically provides a schematic diagram of the cross-sectional structure of the adsorption thermal desorber in the embodiment of the present invention, as figure 1 As shown, the adsorption thermal desorber includes an adsorption tube 5, a casing 1 and a heating wire 3, the adsorption tube 5 is a steel pipe, and the outer surface of the adsorption tube is coated with a first alumina insulating layer 4, and the casing 1 is a steel pipe. The inner surface of the casing 1 is coate...

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Abstract

The invention relates to the field of detection of gas components, in particular to an adsorption thermal desorption device. The adsorption thermal desorption device comprises an adsorption pipe, a sleeve pipe and a heating wire, wherein the adsorption pipe is a steel pipe; a first aluminum oxide insulation layer is sprayed to the outer surface of the adsorption pipe; the sleeve pipe is a steel pipe; a second aluminum oxide insulation layer is sprayed to the inner surface of the sleeve pipe; the heating wire is arranged between the first aluminum oxide insulation layer and the second aluminum oxide insulation layer, and is wound at the outer side of the adsorption pipe; the heating wire and the adsorption pipe are adhered by high-temperature inorganic glue. By adopting the technical scheme, the adsorption thermal desorption device has the advantages that the organic volatile matter in the adsorption pipe can be quickly pyrolyzed and adsorbed, and the adsorption thermal desorption efficiency is improved.

Description

technical field [0001] The invention relates to the field of gas detection, in particular to an adsorption thermal desorber. Background technique [0002] Volatile organic compounds (VOC) are the general term for organic substances that are easily volatile at room temperature, and common ones include formaldehyde, toluene, and xylene. In the field of gas detection, it is often necessary to detect the VOC content in the air, but usually, the VOC content in the air is low, so it is necessary to pre-concentrate the VOC in the air through the adsorption tube, and when the VOC concentration reaches a certain level, The VOC is desorbed from the adsorption tube to the chromatographic column by heating for subsequent separation and analysis. [0003] During the thermal desorption process of the adsorption tube, the thermal desorption device is first heated to the set temperature. When the adsorption tube is heated to the thermal desorption equilibrium, the organic volatiles in the ...

Claims

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Application Information

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IPC IPC(8): G01N1/44
CPCG01N1/44
Inventor 余超简林军宋新郑梦甜
Owner 苏州冷杉精密仪器有限公司
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