Preparation method of standard gases of volatile chlorinated hydrocarbon and liquid composition gasifying and filling device
A filling device and chlorinated hydrocarbon technology, applied in the direction of gas/liquid distribution and storage, container filling method, container discharge method, etc., can solve the problem that the liquid liquid does not adhere to the inner wall of the gas cylinder, etc., and achieve good sealing and guarantee Good accuracy and safety
Active Publication Date: 2015-08-26
中日友好环境保护中心
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Problems solved by technology
However, there are many technical difficulties in preparing gas standard samples from liquid components at room temperature, such as how to weigh low-boiling point and volatile trace liquid components, how to add trace liquids to the sample cylinder, how to ensure that the liquid is completely vaporized, and how to ensure that the liquid does not Adhesion to the inner wall of the gas cylinder, etc.
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[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0017] Such as figure 1 As shown, the liquid component gasification filling device of the present invention includes a digital heating device 1, and the digital heating device 1 includes a heating device 2 and a numerically controlled heating display 3 for controlling the temperature of the heating device. Wherein, a gasification chamber 4 is arranged inside the heating device 2 . The top of the heating device 2 is threadedly connected to a liquid filling port 5 communicating with the gasification chamber 4, and one side of the liquid filling port 5 is connected to a high-purity gas bottle 7 through a purge pipeline 6, and the purge pipeline 6 is also provided with a There is a pressure regulator 8 . The bottom of the heating device 2 is threadedly connected with a bottle connecting part 9 for connecting with a sample gas bottle.
[0018] In the ab...
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The invention relates to a preparation method of standard gases of volatile chlorinated hydrocarbon and a liquid composition gasifying and filling device. The liquid composition gasifying and filling device is characterized by comprising a digital heater, wherein the digital heater comprises a heater and a numerical control heating displayer for controlling the temperature of the heater; a gasification chamber is arranged in the heater; a liquid feeding opening communicated with the gasification chamber is in threaded connection to the top of the heater; a high-purity gas bottle is connected to one side of the liquid feeding opening through a blowing pipeline, and a pressure regulator is also arranged on the blowing pipeline; a bottle connecting part connected with a gas sample bottle is in threaded connection to the bottom of the heater. The liquid composition gasifying and filling device disclosed by the invention can be applied to the preparation of single-composition standard gases of volatile chlorinated hydrocarbon, and is also applied to the preparation of different numbers of mixed standard gases of volatile chlorinated hydrocarbon. The liquid composition gasifying and filling device disclosed by the invention is simple to operate, high in preparation efficiency and high in preparation repeatability, and can be widely applied to the preparation of standard gases of volatile chlorinated hydrocarbon.
Description
technical field [0001] The invention relates to the field of standard gas preparation, in particular to a method for preparing volatile chlorinated hydrocarbon standard gas and a liquid component gasification filling device. Background technique [0002] Chlorinated hydrocarbons are an important class of organic synthesis intermediates, and are the starting materials for many organic synthesis. Among them, organic chlorinated hydrocarbons are widely used as solvents, industrial and civilian cleaning agents, but these substances will not only damage the skin, cause central nervous system poisoning, but also cause damage to the cell prototype, heart, etc., and have adverse effects on the liver, kidney, and pancreas. Some compounds may also have carcinogenic effects, so all organic chlorides have greater toxicity. Chlorinated hydrocarbons in the atmosphere mainly come from man-made pollution except for a very small part from natural biological metabolism. The chlorine atoms r...
Claims
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Login to View More IPC IPC(8): F17C5/06F17C7/04F17C13/02F17C13/00
Inventor李宁王倩樊强田文杜健王帅斌
Owner中日友好环境保护中心