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 standard iron chloride catalyst.

The catalyst significantly 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 continuois catalyst consumption.


The catalyst can be used in all liquid-loop reactors 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 continuous catalyst consumption
· High raw materials yields
· High EDC purity: > 99.9 % (without distillation)
· Utilization of reaction heat, e.g. for heating of distillation columns or drying of PVC,
..leading to a reduction in steam consumption of up to 700 kg/ton EDC
· Low investment costs
· Complete reaction in only one reactor
· Proven materials and reliable and simple equipment
· High active and selective catalyst