Method for separating and purifying hexachloroethane
A technology of hexachloroethane and separator is applied in the field of separation and purification of hexachloroethane, which can solve the problems of serious environmental pollution, waste of useful resources and high energy consumption, and achieve the effects of high purity and high recovery rate
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Embodiment 1
[0020] To extract HCH from the high chlorine residue produced in the production of methane chloride, the specific steps are as follows:
[0021] 1) Add the high chlorine residue removed in the production of 1000kg methane chloride to the water vapor evaporator, then add 1000kg industrial water, add 50kg sodium hydroxide (caustic soda), make the pH in the solution at 13;
[0022] 2) Turn on stirring, turn on the heat conduction oil furnace and heat the evaporator with heat conduction oil. When the temperature of the evaporator is 102°C, the mixed liquid starts to boil and a large amount of steam enters the cooler, and the circulating cooling water in the cooler jacket is opened to cool the steam. The temperature of the evaporator is kept at 102-120°C, and the evaporation pressure is normal pressure, containing hexachloride The ethane vapor is cooled by the cooler and then crystallized into a solid mixture of hexachloroethane and condensed water into the collection tank, and the...
Embodiment 2
[0030] To extract hexachloroethane from the high chlorine residue produced in the production of tetrachlorethylene, the specific steps are as follows:
[0031] 1) Add the high chlorine residue removed in the production of 1000kg tetrachlorethylene to the steam evaporator, then add 3000kg industrial water, add 50kg sodium hydroxide (caustic soda), make the pH in the solution at 13;
[0032] 2) Turn on stirring, turn on the heat conduction oil furnace and heat the evaporator with heat conduction oil. When the temperature of the evaporator is 102°C, the mixed liquid starts to boil and a large amount of steam enters the cooler, and the circulating cooling water in the cooler jacket is opened to cool the steam. The temperature of the evaporator is kept at 102-120°C, and the evaporation pressure is normal pressure, containing hexachloride After being cooled by the cooler, the vapor of ethane crystallizes into a mixture of solid hexachloroethane and condensed water and enters the col...
Embodiment 3
[0040] Crude hexachloroethane purification, concrete steps are as follows:
[0041] 1) Add 100g of crude hexachloroethane into a 500ml beaker, then add 400mg of industrial water, and add 2g of sodium hydroxide (caustic soda), so that the pH is at 12;
[0042] 2. Use another beaker of the same size to buckle on the beaker with mixed materials;
[0043] 3. Turn on the electric furnace to heat the beaker containing the mixed material. When the temperature in the beaker reaches 102°C, the mixed liquid starts to boil and a large amount of steam enters the upper beaker to condense naturally into hexachloroethane crystals and water, and the condensed water falls back to the lower beaker, and the hexachloroethane crystals adhere to the upper beaker;
[0044] 4. When the crystallization of hexachloroethane in the upper beaker reaches a certain thickness, remove the upper beaker and cool it to room temperature naturally;
[0045] 5. Use another beaker to buckle on the lower beaker and...
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