Patent ID: 7392767
Filing Date: 2008-07-01
Classification: F22B,Y02E

Abstract:
1. A quench column heater having a liquid inlet, a hot liquid outlet, a hot gas inlet and a cooled gas outlet and adapted to heat a liquid stream by heat exchange with a hot gas stream to produce a hot liquid stream and a cooled gas stream, the heater comprising: a) a heat exchanger including a passageway for the flow of an intermediate temperature liquid stream to produce a hot liquid stream and an intermediate temperature gas stream by indirect heat exchange contact with a passageway for the hot gas stream from the hot gas inlet to produce the hot liquid stream via the hot liquid outlet and the intermediate temperature gas stream; b) a quench column adapted to receive the liquid stream via the liquid inlet and pass the liquid stream into the quench column from a top of the quench column for recovery from a bottom of the quench column in gas-to-liquid contact with the intermediate temperature gas stream to produce an intermediate temperature liquid stream and a cooled gas stream for discharge via the cooled gas outlet; c) a collection zone to collect the intermediate temperature liquid from the quench column; and, d) a conduit in fluid communication with the collection zone and an intermediate temperature liquid inlet to the heat exchanger.