Pyrolysis reactor systems

A pyrolysis reactor system comprising a reactor and a contactor mounted above the reactor, wherein the contactor comprises at least one contactor element mounted within a vessel having a wall with an internal surface and being arranged for the flow of gas components back into the reactor,

• wherein the contactor elements include at least one perforated element which is sloped upwardly and radially towards the vessel wall,
• wherein:
• the vessel has a jacket surrounding the contactor element or elements,
• said jacket has a lower inlet and an upper outlet and a pump for pumping a heat exchange fluid into and around the jacket,
• at least one perforated contactor element has a frusto-conical shaped component, with its apex facing downwards towards the reactor, in which an upper edge is adjacent said internal surface and there is a baffle plate mounted below the apex, and
• the reactor system further comprises a temperature controller configured to pump coolant into the jacket inlet at a temperature chosen according to desired carbon chain length condensation within the contactor, and a pressure controller configured to control pressure in the contactor according to said desired carbon chain length condensation within the contactor.