EDC DIRECT CHLORINATION Process using Boiling Reactor Technology and DIRECT CHLORINATION Catalyst
In the DIRECT CHLORINATION process, EDC is produced by the exothermal addition of chlorine to ethylene in liquid EDC phase. In the Vinnolit process a special complex is used as catalyst, which is a remarkable improvement in comparison to the normally used iron chloride catalyst.
The catalyst suppresses the formation of by-products. Therefore the reaction can be carried out at a substantially higher temperature, whereby heat recovery is possible. The catalyst is fed to the reactor loop under normal operation. There is no catalyst consumption.
The catalyst can be used in a liquid-loop reactor as well as in a boiling reactor for the full temperature range between 50 – 125 °C. The EDC thus produced has a quality which allows the direct feed to the EDC cracker without distillation.
The advantages of the Vinnolit process can be summarized as follows:
· no consumption of catalyst
· high ethylene and chlorine yields
· high EDC purity: > 99.9 % (without purification)
· utilization of reaction heat, e.g. for heating of distillation columns, thereby reducing the steam consumption by 0.65 t/t EDC
· complete reaction in only one reactor
· reliable equipment
· low investment costs
· proven materials
· no waste water treatment is required
· high active and selective catalyst
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