Gas component qualitative and quantitative detection analysis device and method

A technology for quantitative detection and gas composition, which can be used in measurement devices, analytical materials, material separation, etc.

Inactive Publication Date: 2019-08-20
北京水木滨华科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxygen-containing products generally exist in liquid, but the gas composition of the reaction system has C 1 -C 4 Hydrocarbons, H 2 , O 2 , N 2 , CO, CO 2 , Oxygen-containing compounds that exist in a gaseous state, etc. The boiling point of these gas phase components ranges from -196°C to 117°C, spanning about 300°C; and from non-polar O 2 , N 2 To highly polar acetic acid, butyric acid, ethylene glycol, and propylene glycol, the qualitative and quantitative reaction system is very cumbersome and time-consuming
The detection of a gas phase sample even requires 3-4 chromatographs to complete the measurement, which greatly reduces the work efficiency

Method used

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  • Gas component qualitative and quantitative detection analysis device and method
  • Gas component qualitative and quantitative detection analysis device and method
  • Gas component qualitative and quantitative detection analysis device and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This embodiment provides a qualitative and quantitative detection and analysis device for gas components. The device includes a first inlet for the gas to be tested, an outlet for the gas to be tested, a first carrier gas inlet, a second carrier gas inlet, and a third carrier gas inlet. , the first quantitative loop, the second quantitative loop, the first six-port valve, the second six-port valve, the ten-port valve, the FID detector, the TCD detector, the first damping tube, the second empty chromatographic column, the first preset A separation column, a second pre-separation column, a first chromatographic column, a second chromatographic column, and pipelines connecting the components;

[0071] The first gas inlet to be tested is connected to the first end of the first quantitative loop through the first six-way valve, and the second end of the first quantitative loop is connected to the second quantitative loop through the first six-way valve and the ten-way valve. ...

Embodiment 2

[0088] This embodiment provides a method for qualitative and quantitative detection and analysis of gas components, the method is based on the analysis device of the above-mentioned embodiment, and the method includes the following steps:

[0089] 1) Adjust the port status of the first six-way valve and the ten-way valve so that the first six-way valve and the ten-way valve are connected in series, and the gas to be tested is sent into the first gas to be tested inlet, and the gas to be tested passes through the first gas to be tested sequentially. Port 6A and port 1A of the six-way valve enter the first quantitative loop for loading, and after loading, pass through port 4A of the first six-way valve, port 5A of the first six-way valve, and port 10 of the ten-way valve in sequence. Port 10B and port 1B of the ten-way valve enter the second quantitative loop for loading. After loading, the excess gas to be tested is discharged from the outlet of the gas to be tested through port...

Embodiment 3

[0097] This embodiment provides a qualitative and quantitative detection and analysis device for gas components. Carrier gas inlet, first quantitative loop, second quantitative loop, first six-way valve, second six-way valve, ten-way valve, FID detector, TCD detector, first damping tube, first empty chromatographic column, The second empty chromatographic column, the first pre-separation column, the second pre-separation column, the first chromatographic column, the second chromatographic column, and the pipelines connecting the components;

[0098] The first six-way valve includes port 1A, port 2A, port 3A, ..., port 6A in the clockwise direction, and the ten-way valve includes port 1B and port 2B in the clockwise direction , port 3B, ..., port 10B; the second six-way valve is recorded as port 1C, port 2C, port 3C, ..., port 6C in a clockwise direction;

[0099] The first gas inlet to be tested is connected to the first end of the first quantitative loop through port 6A and ...

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Abstract

The invention provides a gas component qualitative and quantitative detection analysis device and method. With the gas component qualitative and quantitative detection analysis device and method of the invention adopted, the quantitative and qualitative detection of gas components can be realized. According to the method, a system gas chromatographic method is adopted, that is, different valves are opened in different time periods, and different chromatographic columns are fed; and qualitative and quantitative detection is realized according to the difference of retention time and the difference of the polarities of the columns. The detection analysis device and method are particularly suitable for the qualitative and quantitative detection analysis of gas components in a reaction for preparing tertiary butanol through isobutane oxidation; and the method is suitable for the qualitative and quantitative detection analysis of gas components in a reaction for preparing epoxypropane through propylene oxidation and the qualitative and quantitative detection analysis of gas components in a reaction for preparing methyl tertiary butanol through isobutene.

Description

technical field [0001] The invention belongs to the technical field of gas component analysis methods and devices, in particular to a qualitative and quantitative detection and analysis device and method for gas components, in particular to a gas component in the reaction of isobutane oxidation to prepare tert-butanol Qualitative and quantitative detection and analysis devices and methods. Background technique [0002] In the preparation process of any chemical product, it is necessary to conduct qualitative or quantitative analysis of the gas phase or liquid phase components in the reaction material to monitor the dynamics of the reaction process and realize the reaction such as conversion rate, activity, yield, etc. regulation. Exemplarily, in the reaction of isobutane oxidation to prepare tert-butanol, the qualitative and quantitative detection of each component in the reactant stream should be performed in real time. Especially for gas phase components, due to the comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 王桂华姚春海马敏郑虓
Owner 北京水木滨华科技有限公司
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