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Hot gas flow dissociation dewatering indirect Karl-Fischer-process analysis device

An analysis device, Karl Fischer's technology, applied in the field of analysis devices, can solve the problems of inability to detect viscous samples, etc., and achieve the effects of reducing emissions, accurate measurement, and reducing environmental pollution

Inactive Publication Date: 2015-04-29
SHANGHAI RES INST OF CHEM IND +1
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  • Description
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Problems solved by technology

However, this method still cannot detect viscous samples

Method used

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  • Hot gas flow dissociation dewatering indirect Karl-Fischer-process analysis device

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Embodiment

[0037] An indirect Karl Fischer method analysis device for dissociation and dehydration of hot gas flow, its structure is as follows figure 1 Shown, comprise the Karl Fischer titration assembly that is made up of titration tank 19, Karl Fischer burette 9, electrode 21, coulometer 8, electromagnetic stirrer 20 below titration tank 19, waste liquid bottle 17, by miniature air pump 11 and The methanol recovery component composed of the methanol condenser 13 also includes a gas heating component arranged outside the titration cell 19 , which releases moisture after heating the sample, and the moisture is brought into the titration cell 19 by the hot gas flow. The gas heating assembly includes a nitrogen cylinder 1, a molecular sieve dehydrator 3, a gas heating coil 23 and a sampling device 6 connected in sequence. Heating plate 22.

[0038] The molecular sieve dehydrator 3 is connected to the nitrogen cylinder 1 through a hose to remove trace moisture in the nitrogen gas. The bot...

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Abstract

The invention relates to a hot gas flow dissociation dewatering indirect Karl-Fischer-process analysis device which comprises a titration tank, a Karl-Fischer burette, an electrode, a voltameter, an electromagnetic stirrer positioned below the titration tank, a Karl-Fischer titration component composed of waste liquid bottles, a methanol recovery component composed of a minitype gas pump and a methanol coagulator, and a gas heating component, wherein the gas heating component is arranged outside the titration tank and is used for heating the sample so that the sample can release water, and the hot gas flow carries the water into the titration tank. Compared with the prior art, only water and certain specific volatile matters are carried into the burette so as to keep the electrode and electrolysis carrier liquid clean, so that the detection is more accurate, and the electrolysis carrier liquid in the titration tank does not need to be replaced frequently. The methanol coagulator is arranged in the gas phase, so the methanol is recovered by utilizing the pressure difference before and after the gas pump, thereby relieving the environmental pollution and being beneficial to environmental protection.

Description

technical field [0001] The invention relates to an analysis device, in particular to an indirect Karl Fischer method analysis device for hot gas flow dissociation and dehydration. Background technique [0002] There are many methods for the determination of moisture in samples, such as oven method, infrared drying method, gas chromatography, Karl Fischer method, etc. Among them, the determination of free water or crystal water content in most organic and inorganic solids, liquids, petroleum and chemical products by Karl Fischer method is the most traditional classic method, especially suitable for the determination of trace and trace water, widely used Used in petroleum, chemical industry, electric power, medicine, agricultural industry and other fields. [0003] The Karl Fischer method was proposed by Karl Fischer in 1935, using I 2 , SO 2 , pyridine, anhydrous CH 3 OH (water content below 0.05%) is prepared as a reagent, and the water equivalent of the reagent is measu...

Claims

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Application Information

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IPC IPC(8): G01N27/42G01N1/44
Inventor 章志涛张小沁段路路
Owner SHANGHAI RES INST OF CHEM IND
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