Liquid organic atomization and gasification device

A technology of gasification device and organic matter, which is applied in the direction of measuring device, chemical/physical/physical chemical process, chemical instrument and method, etc., can solve the problems of long stable time and inaccurate concentration of gas distribution device, and achieve large-scale inaccurate Intermittent operation, accurate results, and the effect of improving gasification efficiency

Inactive Publication Date: 2011-09-07
中国人民解放军防化指挥工程学院
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Problems solved by technology

[0009] The purpose of the present invention is to solve the technical problems such as long stable time and inaccurate concentration of the gas distribution device based on t

Method used

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  • Liquid organic atomization and gasification device
  • Liquid organic atomization and gasification device
  • Liquid organic atomization and gasification device

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Experimental program
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Embodiment 1

[0029] Set the system temperature of the spray gasification device to 40°C, and the gas flow rate (V gas )400mL·min -1 Next, absolute ethanol (density ρ 40℃ =0.7722g·mL -1 ) injection rate (V liq )0.04μL·min -1 . According to the following formula, calculate the prepared mass concentration of ethanol under the standard condition (0°C, 1atm) in the gas phase: 0.077mg L -1 .

[0030] c gas = ρ · V liq × p V gas × 1000 ( mg · L - 1 )

Embodiment 2

[0032] Set the system temperature to 40°C, the gas flow rate (V gas )3000mL·min -1 Next, absolute ethanol standard substance (density ρ 40℃ =0.7722g·mL -1 , purity 100%) injection rate (V liq )0.001μL·min -1 . According to the above formula, the prepared mass concentration of sarin under the standard condition (0°C, 1atm) in the gas phase is calculated as 0.26mg m -3 .

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Abstract

The invention discloses a liquid organic atomization and gasification device, which is mainly used for preparing a standard gas required in processes of manufacturing, production, verification and calibration of gas alarms from a liquid organic material. A liquid standard material is atomized in an atomizing air pipe through the inlet of an injector and is evaporated and gasified in an evaporating tube under the action of the gas in a blowing air pipe, and thus, the liquid standard organic substance is converted into a gaseous substance. The pushing rate of the injector is controlled by using an injection pump, so that the pushing rate of the injector is smaller than the maximum evaporation rate of the liquid standard substance. The temperature and pressure in an atomizing and gasifying system are measured, the concentration of the standard material from the outlet of the atomization and gasification device in a gas phase can be obtained by using the pushing rate of the injector and the flow metered by a flowmeter, and by conversion according to an equation of state of gas.

Description

technical field [0001] The invention relates to an atomization and gasification device for liquid organic matter, which vaporizes liquid organic matter to form gas through the principle of spray gasification, and is mainly used for formulating liquid organic matter into suitable gas alarms or detectors for the development, production, verification and calibration process The standard gas required in the Background technique [0002] During the development, production, and use of gas alarms or detectors, it is necessary to prepare gaseous standard substances with accurate concentrations to evaluate the performance of the instrument. Although these organic standard substances have a certain vapor pressure or volatility, they exist in a liquid state at normal temperature and pressure, such as methanol, ethanol, ether, etc., and the volatilization rate is usually slow, so it is necessary to achieve an accurate concentration. The gas needs to last long enough. Because these liq...

Claims

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Application Information

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IPC IPC(8): B01J19/00G01N33/00G08B29/00
Inventor 王鑫李善茂汪吉章李伟沈庭云董中朝刘国宏张草庞敏晖唐慧任鑫磊
Owner 中国人民解放军防化指挥工程学院
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