Patent ID: 8158840
Filing Date: 2012-04-17
Classification: C10G

Abstract:
1. A process for cooling liquid bottoms from a hydrocarbon feedstock vapor/liquid separation apparatus used in steam cracking said hydrocarbon feedstock, the process comprising: indirectly heat exchanging said liquid bottoms with boiler feed water to provide cooled liquid bottoms and heated boiler feed water; indirectly heat exchanging effluent from a radiant section of a stream cracking furnace in a quench exchanger used to cool said effluent from one of (i) prior to indirectly heat exchanging said liquid bottoms with said boiler feed water and (ii) after indirectly heat exchanging said liquid bottoms with said boiler feed water; and generating steam from the boiler feed water and recovering steam generated using said heated boiler feed water, the steam having a pressure of at least about 4100 kPa.