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A multi-channel heating device for organic nitrate based on cavity ring-down spectroscopy

A spectrum technology and a heating device technology, applied in the field of organic nitrate multi-channel heating devices, can solve the problems of complex structural parts, unsuitable for experiments, troublesome operation, etc., and achieve the effects of reasonable layout, easy portability and maintenance, and improved effect.

Active Publication Date: 2021-06-18
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The structural parts of these large-scale heating equipment are complicated, the operation is troublesome, the price is expensive, and it is not easy to carry, so it is not suitable for experiments.

Method used

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  • A multi-channel heating device for organic nitrate based on cavity ring-down spectroscopy
  • A multi-channel heating device for organic nitrate based on cavity ring-down spectroscopy
  • A multi-channel heating device for organic nitrate based on cavity ring-down spectroscopy

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Embodiment 1

[0032] Such as Figure 1-4 As shown, a kind of organic nitrate multi-channel heating device based on cavity ring-down spectroscopy technology in this embodiment includes a housing 1, and a multi-channel heater 27 is arranged in the housing 1, and the channel heater 27 is used for the Organic nitrate gas is heated. One end of the multi-channel heater 27 is connected to several air inlets 3 , and the other end is connected to several air outlets 19 , wherein the air inlets 3 and the air outlets 19 are respectively located on opposite sides of the casing 1 . The multi-channel heater 27 is also connected with a heat equalization and flow guide mechanism 26 for dredging the internal airflow.

[0033] The organic nitrate gas to be detected enters the interior of the multi-channel heater 27 through the air inlet 3, and after being heated, it is discharged from the gas outlet 19 for detection, thereby realizing thermal decomposition of the organic nitrate gas. In addition, through m...

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Abstract

The invention provides an organic nitrate multi-channel heating device based on cavity ring-down spectroscopy technology, which includes a housing, and a multi-channel heater is arranged in the housing, and the channel heater heats the organic nitrate gas discharged therein; One end of the channel heater is connected with several air inlets, and the other end is connected with several air outlets, and the air inlets and air outlets are respectively located on opposite sides of the shell; the multi-channel heater is also connected with a valve for dredging the internal airflow. Even heat conduction mechanism. The present invention can simultaneously pyrolyze various organic nitrates with different temperature requirements by setting multiple channels, and evenly distribute the heat inside the multi-channel heater through the uniform heat conduction mechanism, so that the generated heat can be heated to the inside of the quartz tube. The organic nitrate gas is evenly heated to improve the effect of thermal decomposition, thereby improving the subsequent detection accuracy; at the same time, this device also has excellent features such as reasonable layout, easy to use, low cost, and easy to carry and maintain.

Description

technical field [0001] The invention relates to the technical field of organic nitrate measurement, in particular to an organic nitrate multi-channel heating device based on cavity ring-down spectroscopy technology. Background technique [0002] Organic nitrates refer to a class of nitrate groups (-ONO) in the atmosphere 2 ) is the general term for organic compounds. Organic nitrates are roughly divided into two categories: AN (RONO 2 ) and PN(RO 2 NO 2 ). Among them, RONO 2 It will be decomposed into RO and NO at 450 degrees Celsius 2 , RO 2 NO 2 It will be decomposed into RO at 250 degrees Celsius 2 with NO 2 . [0003] Existing equipment CRDS (Cavity Ring-Down Spectroscopy) can measure NO 2 content, but the organic nitrate content cannot be measured, so by heating the organic nitrate, it decomposes to generate NO 2 , can indirectly measure organic nitrate. For this process we need a gas heating unit. [0004] However, most of the existing gas heating device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31G01N21/01G01N1/44
CPCG01N1/44G01N21/01G01N21/31
Inventor 胡仁志吴盛阳谢品华陈浩靳华伟刘建国刘文清
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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