Method for analyzing content of impurities in fluorine gas
A technology of impurity content and analysis method, applied in the field of impurity content analysis in fluorine gas, can solve problems such as aging, corrosion of accessories, and inability to ensure the conversion rate of fluorine gas, and achieve the effect of improving analysis accuracy and avoiding corrosion.
Active Publication Date: 2022-07-29
FUJIAN DEER TECH CORP
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Problems solved by technology
This analytical method requires the conversion of fluorine gas to Cl 2 Then carry out separation and detection, firstly, the conversion rate of fluorine gas cannot be ensured completely, secondly, it is difficult to control when the fluorochloro oil column fails, and the generated Cl 2 Very corrosive, easy to cause corrosion and aging of accessories
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[0025] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained b...
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Abstract
The invention provides a method for analyzing the content of impurities in fluorine gas. The method comprises the following steps: S1, communicating a valve a1 with a valve b1, and communicating a valve f1 with a valve e1; the a2 valve is communicated with the b2 valve, and the f2 valve is communicated with the e2 valve; the gas to be analyzed is quantified through sample introduction of an a1 valve; s2, communicating a valve c1 with a valve b1, communicating a valve d1 with a valve e1, opening a first carrier gas unit and a first reaction gas pipeline, and introducing the to-be-analyzed gas in the first quantitative cup and the first reaction gas into a first reaction furnace for reaction to remove fluorine gas; then a TCD detector and an FID detector are used for detection; s3, a c2 valve and a b2 valve of a second six-way valve are communicated, a d2 valve and an e2 valve of the second six-way valve are communicated, a second carrier gas unit and a second reaction gas pipeline are opened, and the to-be-analyzed gas in the second quantitative cup and the first reaction gas are introduced into a second reaction furnace for reaction to remove fluorine gas; and then a TCD detector and an FID detector are used for detection.
Description
technical field [0001] The invention relates to a method for analyzing the content of impurities in fluorine gas. Background technique [0002] Fluorine gas is one of the important materials in the field of modern fluorine chemical or fluorine chemistry, and it is more and more widely used in new energy, new materials and other fields. In view of the very active chemical properties of fluorine gas and strong oxidizing properties, it can react with almost all organic and inorganic substances except perfluorinated compounds, which greatly limits the choice of analytical methods and analytical aids. In GB / T 26251-2010 "Fluorine and Fluorine-Nitrogen Mixed Gas", only fluorine gas is converted into chlorine gas for analysis, the measured chlorine gas content is expressed as fluorine gas content, and the HF content is calculated by subtraction. The analysis method not only has the problem of inaccurate analysis data, but also the strong corrosiveness of chlorine will cause irreve...
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IPC IPC(8): G01N30/02G01N30/66G01N30/68
CPCG01N30/02G01N30/66G01N30/68
Inventor 王凤侠张晓明傅玉榕张丽萍赖金香李婷
Owner FUJIAN DEER TECH CORP