Patent ID: 7540936

Claim:
An evaporator for receiving a waste fluid stream and producing therefrom separate streams of an evaporated fluid and a condensate liquid for use in industrial waste treatment comprising: a curved pathway bounded by a casing having an inlet port through which in use the waste fluid enters the casing, said casing defining a pathway having a flow direction therein through which in use the waste fluid stream flows, and within which casing in use the evaporated fluid is separated from the waste fluid stream and producing the condensate liquid, said casing having a drain beneath the pathway through which in use the condensate liquid passes, and an outlet through which in use the evaporated fluid is drawn; a series of fins of elongate aerofoil cross-section located in and extending across the pathway in the flow direction of the waste fluid stream flowing in use along the pathway and wherein the casing is curved and the fins are arranged parallel to a tangent of the curve of the casing.