Alcoa of Australia Limited

Peter Stewart Hay

Laurence Michael Guilfoyle

David John Cooling

Odorant from a process stream is removed by passing the stream () to a counter-current contacting device () for stripping odorants. The odorants passes from the contacting device () as contaminated steam () while the remaining process stream passes directly to a 'tube side' of a falling film evaporator () and is heated producing steam that passes into the counter-current contacting device () to strip that process stream and produce the contaminated steam (). This contaminated steam from the contacting device () passes through a vapor compression step () from which it is introduced into a 'shell side' of the falling film evaporator () and in which it heats the process stream passing from the contacting device () into the evaporator (). The contaminated steam that is not condensed in the falling film evaporator passes as a low flow vent gas () in which the odorants have been concentrated.

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Mandurah, Australia

Peter Stewart Hay