Fast measuring system and method for gas-gas and/or liquid-liquid dispersion coefficient
A rapid measurement and diffusion coefficient technology, which is applied in chemical environmental protection monitoring and chemical industry, can solve the problems of cumbersome process, difficult to find data in physical and chemical manuals, long measurement time, etc., and achieve good reproducible results
Inactive Publication Date: 2008-07-16
王京宇
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[0002] Gas-gas and / or liquid-liquid diffusion coefficient is an important parameter in the field of chemistry and chemical technology. Existing related measurement methods include: diffusion tube technology and gas chromatography based on Van Deemter (Van Deemter) equation, etc. Its main disadvantages are: the determination time is long and the process is cumbersome (J.R.Conder and C.L.Young, Physicochemical Measurement by Gas Chromatography; Wiley: New York, 1980), therefore, it is difficult to find the required data in the physical and chemical handbook
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The present invention is a gas and / or liquid diffusion coefficient rapid measurement system and method, which comprises the following steps:
[0027] 1) Open the carrier gas and / or carrier liquid system 1; make the carrier gas and / or carrier liquid flow through the injector 3, the diffusion tube 5 and the detector 8 at a certain flow rate; introduce the sample 4 to be tested by the injector 3, Make it diffuse in the diffusion tube and be pushed to the detector 8; the sample to be tested can be any gas and / or liquid; the carrier gas system can be an inflatable steel cylinder or a gas compressor; the carrier liquid system can be a liquid high-pressure pump. The carrier gas can be air, nitrogen or other gases; the carrier liquid can be water, methanol or other liquids. The carrier gas or carrier liquid should not react chemically with the injector,...
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The invention relates to a determining system and a determining method for fast determining gas-gas and / or liquid-liquid diffusing parameters and belongs to the technical field of chemical engineering, chemistry and environment monitoring. The determining system is composed of a carrier gas and / or carrier liquid system, a pressure measuring system, a sample feeding system, a diffusing system, a flow determining system, a temperature control system, a detecting system and a data processing system, etc. The determining method includes that: the carrier gas or carrier liquid system pushes a sample to be detected into the detecting system from the sample feeding system through the diffusing system at constant temperature and constant pressure; the data processing system records the intensity of signals in real time and then immediately works out diffusion parameters according to a half-peak simulation equation. The invention has the effects of being able to determinate the gas-gas and / or liquid-liquid diffusing parameters in a plurality of minutes as fast as possible, having good reproduction quality, being easy to form a commodity apparatus, fast determining the diffusing parameters for unknown harmful gases or liquids in the air or water and providing emergency data for emergencies and editing a gas-gas and / or liquid-liquid diffusing parameter menu suitable for various fields in a short time.
Description
technical field [0001] The invention relates to a method for quickly measuring the diffusion coefficient of a gas and / or a liquid and related devices, and belongs to the technical field of chemical and chemical environmental protection monitoring. Background technique [0002] Gas-gas and / or liquid-liquid diffusion coefficient is an important parameter in the field of chemistry and chemical technology. Existing related measurement methods include: diffusion tube technology and gas chromatography based on Van Deemter (Van Deemter) equation, etc. Its main disadvantages are: the measurement time is lengthy and the process is cumbersome (J.R.Conder and C.L.Young, Physicochemical Measurement by Gas Chromatography; Wiley: New York, 1980), therefore, it is difficult to find the required data in the physical and chemical handbook. [0003] The object of the present invention is exactly to propose a kind of gas and / or liquid diffusion coefficient measuring system and measuring method...
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Inventor 王京宇
Owner 王京宇