Method and device for using carbon black in POX systems

摘要

The process for material utilization of soot from waste water of a heavy oil partial oxidation (POX), comprises mixing soot-loaded waste water with naphtha, supplying the mixed soot-loaded waste water to a first decanter, removing a soot-free water fraction (13) and a water-free naphtha/soot mixture (12) from the decanter, and feeding the mixture as feed to a reactor of a naphtha POX. A first crude synthesis gas (2) is generated from relatively high-boiling hydrocarbons by partial oxidation in the heavy oil POX. The process for material utilization of soot from waste water of a heavy oil partial oxidation (POX), comprises mixing soot-loaded waste water with naphtha, supplying the mixed soot-loaded waste water to a first decanter, removing a soot-free water fraction (13) and a water-free naphtha/soot mixture (12) from the decanter, and feeding the mixture as feed to a reactor of a naphtha POX. A first crude synthesis gas (2) is generated from relatively high-boiling hydrocarbons by partial oxidation in the heavy oil POX. The waste water from the naphtha POX is mixed with the naphtha and the waste water from the heavy oil POX and then introduced into the decanter. The soot-loaded waste water from the naphtha POX is mixed with naphtha and then introduced into a second decanter. The soot-free water fraction and the mixture are removed from the second decanter. The mixture from the second decanter is fed as feed to the reactor of the naphtha POX. The naphtha POX is converted into a second crude synthesis gas by partial oxidation in the reactor of a naphtha POX. A part of the water-free naptha/soot mixture from the decanter is stored before the step of feeding the mixture as feed to the reactor of the naphtha POX in response to a temporary performance reduction of the naphtha POX. The stored part of the mixture is fed into the reactor of the naphtha POX when operating conditions of the naphtha POX permit. An independent claim is included for a device for material utilization of soot from waste water of a heavy oil partial oxidation.