Patent ID: 8986430
Filing Date: 2015-03-24
Classification: B01D,C01B

Abstract:
1. A direct contact condenser configured to allow cooling of a waste gas in counter-current contact with a process liquid, comprising: a feed gas conduit coupled to the direct contact condenser and a waste gas source and configured to feed the waste gas to the direct contact condenser, wherein the waste gas source is a sulfur recovery unit, a carbon dioxide capture unit, a heater, or a turbine; wherein the direct contact condenser further comprises a first section liquidly coupled to a second section, such that the waste gas moves from the first section to the second section; a first cooling device liquidly coupled to the first section, and configured to provide at least a portion of a first cooled process liquid to the first section at a first rate via a first pump; a second cooling device liquidly coupled to the second section, and configured to provide at least a portion of a second cooled process liquid to the second section at a second rate via a second pump; wherein first and second pumps are configured to allow pumping of the first and second cooled process liquids at different pump rates, respectively; wherein first and second cooling devices are distinct, wherein the first cooling device is an air cooler, and wherein the waste gas is a gas from a process unit, a heater, or a turbine that is vented to the atmosphere; and first and second conduits liquidly coupled to the direct contact condenser and configured to provide first and second heated process liquids to the first and second cooling devices, respectively.