Safety use method of chlorine
A chlorine gas and safety technology, applied in the direction of mixing methods, chemical instruments and methods, fixed-capacity gas storage tanks, etc., can solve the problems of using chlorine gas, reduce transportation costs, eliminate potential safety hazards, and facilitate recycling and reuse
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Embodiment 1
[0007] Example 1, add 1000ml carbon tetrachloride solution (mass percentage concentration is 99.5%) in 2000ml measuring cylinder, insert glass tube and let chlorine gas flow for 10-30 minutes, you can measure the chlorine gas content, and can be adjusted to the required concentration (1.0 ~2.5mol / L).
Embodiment 2
[0008] Example 2, 25L of carbon tetrachloride solution (99.2% by mass) is placed in a long polypropylene barrel with a barrel diameter of 200mm and a height of 1500mm, and 2 kg of chlorine gas is fed from the bottom of the barrel to make a concentration of 2mol / L carbon tetrachloride chlorine mixture.
[0009] The method for measuring the chlorine gas concentration in the chlorine-containing carbon tetrachloride mixed solution: take 10ml of the prepared chlorine-containing carbon tetrachloride solution, put it in a 100ml volumetric flask, dilute it to the mark with carbon tetrachloride, and shake well. Then take out 10ml of diluent and place it in a 300ml Erlenmeyer flask, add 80ml of water, 10ml of 10% hydrochloric acid and 3 grams of KI with a concentration of 0.1mol / L Na 2 S 2 o 3 When titrated to light yellow, add 3ml of starch indicator with a mass percentage concentration of 0.5%, and then continue to titrate with sodium thiosulfate until the blue color disappears; the...
Embodiment 3
[0010] Embodiment 3 is an example of the safe use of chlorine, 1260 grams of anhydrous ferrous chloride is placed in a polypropylene sealed cylinder with a volume of 20 liters (there are some PP balls (5-20) in the cylinder, each weighing 200 grams ), add 10 liters of chlorine-containing carbon tetrachloride solution (the concentration of chlorine in the carbon tetrachloride is 1.5Mol / L), seal, rotate for 1 hour, and check that there is no Fe +2 When the material is discharged, it is filtered under reduced pressure, then centrifuged to dry, and the filtrate is recovered. The filter cake was placed in a vacuum oven and dried at -0.09MPa and 80°C to obtain 1600 grams of anhydrous ferric chloride with a purity of 98.5%. The separated carbon tetrachloride can be reused after recovery.
[0011] Many reactions that require chlorine oxidation can be completed by adding chlorine-containing carbon tetrachloride solution dropwise under strong stirring. The water-insoluble carbon tetrac...
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