Patent ID: 9650317
Date: 2017-05-16
CPC Classifications: C01B,C07C,F25J,F28B,Y10S

Claim:
1. A method for the dehydrogenation of hydrocarbons comprising: contacting a hydrocarbon feedstock with a dehydrogenation catalyst within a reactor under reaction conditions effective to dehydrogenate at least a portion of said hydrocarbon feedstock in a dehydrogenation reaction; removing an offgas stream that comprises hydrogen from the reactor; providing a direct contact condenser, wherein the direct contact condenser circulates a cooling medium and contacts the offgas stream with the cooling medium; cooling the offgas stream in the direct contact condenser to enable the condensation of compounds from the offgas stream; removing from the direct contact condenser a cooled offgas stream having a reduced content of condensable compounds as compared to the offgas stream prior to contact with the cooling medium; and compressing the cooled offgas stream in an offgas compressor, wherein the offgas compressor maintains the pressure within the reactor.