in VCM/EDC plant large scale of liquid wastes are produced. These wastes are chlorinated hydrocarbons and the main parts of these are trichloroethane and EDC.
Yes, this is typically a waste mix that can be separated at will by distillation. There will be EDC for recycling into the process as well as some bottoms, from which heavies must be purged. The 1,1,1-Trichloroethane was phased out as a solvent by the Montreal conference; so all Trichloroethane will need to be recycled in producing EDC.
As we know, there are many chlorinated components in this waste liquid. Its composition is not fixed and depend on the operation condition may vary from 30% EDC to. 80-80% EDC. So the distillation faces different feeds and could not sufficiently operate. Now, i have proposed a new plan to separete some part of EDC and burn the residual. the breakthrough of this plan is recycling of it’s burning. it is valuable to express that if someone can distillate the total amount of EDC in this mixture, the bottom will contain a huge amount of other chlorinated high boil components that must be burned in incinerator .
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