Abstract: Light components are stripped from a multicomponent liquid feed mixture in a core type plate-fin heat exchanger by heating and partially vaporizing the mixture during downward flow in one of a plurality of multichannel flow passageways in the exchanger. The vapor thus formed flows upward and promotes vaporization of dissolved light components from the liquid to yield a liquid product substantially free of lighter components. The passageways are disposed in indirect heat exchange with one or more additional groups of passageways, and heat for partial vaporization of the downward-flowing liquid feed mixture is provided by indirect heat exchange with a condensing process stream. Alternatively, this heat is provided by a bottoms stream recovered from distillation of the stripped liquid product withdrawn from the core type plate-fin heat exchanger.

Abstract: The present invention is a reformation process using a compact, plate-fin heat exchanger with multi-stream, multi-passage capability to provide parallel juxtaposed heat exchange of the various process streams of a reformation process.

Abstract: A multi-barb pick for a waste stripping machine. The pick is formed from a flat sheet metal piece. Two spaced triangular projections, generally parallel, extend from one section of the piece, with each projection terminating in a barb. Each barb is generally rectangular in form and two adjacent edges thereof are sharpened along each surface thereof. The barb is employed in a conventional waste stripping apparatus for removing cut sections from a paperboard web of indefinite length.