Technology Unit

In a TM reactor (multiple cold gasin jection) the compressed ethylene is split into several streams and fed into the reactor at a number of positions. 40 to 70% of the total ethylene is preheated to 150-180°C before addition of peroxide which, together with the oxygen, sets off the first reaction zone. The other 30-60% of the ethylene is cooled and further split into more or less equal quantities which are injected at different locations along the reactor. Together with addition of initiator this results in the desired number of reaction zones. Additional reaction zones can be crated by dosing of peroxide directly to the reactor. The TM reactor can have a stepwise increase in reactor diameter and the reaction mixture flow velocity can change significantly due to the additional gas feeds.