| Abstract Akzo Zout Chemie B.V.hopes to cut its energy bills in half with a new nonelectrolytic process that produces both VCM and soda.The process takes the technical form of a multicycle system.The essential new aspect is the catalyst oil loop,in which a fluid circulates,which consists of about 35 percent adiponitrile,and for the rest complex ions of I 2Cl - etc. This fluid absorbs ethylene under pressure.By the reaction of ethylene and I 2Cl -,iodochloroethane and I 2 are formed.Iodochloroethane converts to dichloroethane.Dichloroethane can be converted to VCM. In the next steps,this is fed to a NaHCO 3 crystalliser together with pure salt in solid form.The NaHCO 3 can be calcined to soda sah. |
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1997, Vol. 14 
