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A device for dynamic analysis and detection of gas phase products

A technology for detecting gases and products, applied in the field of chemical analysis, can solve the problems of not being well applied and slow reaction rate, etc., and achieve the effects of rich dynamic detection means, convenient operation and simple structure

Active Publication Date: 2021-11-16
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two analysis methods only have certain application advantages for the dynamic study of the thermal decomposition process of substances, but cannot be well applied in the study of other reactions that produce gas phase products, such as: hydrolysis reactions that occur in the presence of a large amount of liquid; reactions The rate is slow, and it takes a long time to produce gas phase products under constant temperature conditions, etc.

Method used

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  • A device for dynamic analysis and detection of gas phase products
  • A device for dynamic analysis and detection of gas phase products
  • A device for dynamic analysis and detection of gas phase products

Examples

Experimental program
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Embodiment 1

[0024] A device for dynamic analysis and detection of gas-phase products, wherein the high-pressure reactor is a gas-phase reaction type high-pressure reactor, and its structural diagram is as follows figure 1 As shown, it includes autoclave K, gas source or carrier gas source 27, the second carrier gas source 28, automatic sampling valve V, quantitative tube N chromatographic column C and detector D; autoclave K includes still cavity 1, Kettle cover 2 and electric heating furnace 3, are provided with pressure gauge 5, air inlet channel 6, outlet channel 7, thermocouple 8, airway switch valve 9,10 on the kettle cover 2; 1 forms a sealed space, and the electric furnace 3 is arranged on the periphery of the still cavity 1 for 3 heating the material in the still cavity 1; the thermocouple 8 extends into the still cavity 1 through the kettle cover 2 to measure the temperature in the still cavity 1; One end of the channel 6 and its air channel switching valve 10 is connected to the...

Embodiment 2

[0027] A device for dynamic analysis and detection of gas-phase products, wherein the high-pressure reactor is a gas-phase reaction type high-pressure reactor, and its structural diagram is as follows figure 2Shown, except that with embodiment 1 identical setting and parts, gas source or carrier gas source 27 is used as the gas source that is catalyzed, i.e. gas source, and in the still cavity 1 of autoclave K from top to bottom Fill the first absorbent cotton layer 22, the catalyst layer 23 and the second absorbent cotton layer 24 in sequence; connected, and the other end stretches into the bottom of the still cavity 1. In a preferred scheme, the thicknesses of the first absorbent cotton layer 22, the catalyst layer 23 and the second absorbent cotton layer 24 each account for 1 / 4 of the height of the still cavity 1, and the upper layer of the abdominal cavity (1) remains 1 / 4 height space.

[0028] The working process of the device in this embodiment is: the catalyzed gas en...

Embodiment 3

[0033] A device for dynamic analysis and detection of reaction gas phase products, wherein the high-pressure reactor is a non-gas phase reaction high-pressure reactor, and its structural diagram is as follows image 3 As shown, in addition to the same settings and parts as in Example 1, the gas source or carrier gas source 27 is used as the first carrier gas source, and the lid of the non-gas-phase reaction type high-pressure reactor is also provided with a liquid sampling port 4 , the liquid inlet is connected to the inside and outside of the still chamber 1, so as to fill the liquid reactant into the kettle chamber, the rear end of the liquid inlet 4 is provided with a liquid inlet switch valve 11, and the liquid inlet switch valve 11 is used to control the reaction The speed and amount of liquid reactants injected into the still cavity 1. In the preferred scheme, a liquid sampler 25 is connected to the front end of the liquid sample inlet, and it is a constant pressure liqu...

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Abstract

Provided is a device for analyzing and detecting reaction gas phase products, including a reaction unit, a separation unit, a detector and the like. The reaction unit is a high-pressure reactor, and there are pressure gauges, air inlets and outlets on the lid. One end of the inlet is connected to the gas source through a pipeline and a regulating valve, and the other end is connected to the high-pressure reactor; one end of the outlet is connected to the To the high-pressure reactor, the other end is connected to the separation unit through pipelines, regulating valves, and gas flow meters. Finally, the gas in the reaction unit is analyzed through a detector. There is an electric furnace on the periphery of the reactor cavity to provide the required temperature for the reactor. By changing the filling mode of the high-pressure reactor and the structure of the lid, the invention can be used not only for investigating the gas-phase catalytic reaction efficiency, but also for detecting some gas-phase products produced in the reaction process, and has simple structure, convenient operation and low cost.

Description

technical field [0001] The invention generally belongs to the technical field of chemical analysis, and in particular relates to a device for analyzing and detecting gas phase products. Background technique [0002] In recent years, with the rapid take-off of the domestic economy, various domestic production industries have developed substantially. With the continuous growth of the automobile industry and the interior decoration industry, the threat to human health and the living environment brought by the gaseous organic substances left by automobile exhaust and interior decoration has gradually become prominent. And with the application of various new materials in weapons and equipment, in-depth research on the compatibility of new materials with the original system is also particularly important. The treatment of automobile exhaust pollutants, the purification of organic substances such as formaldehyde and benzene released by interior decoration materials, and the in-dep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/04B01J3/04
CPCB01J3/04G01N30/04
Inventor 侯斌李爽贾方娜毛羽杨秋秋王业腾高扬程迪
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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