Method of indirect heat exchange for two phase flow distribution

Chemistry of hydrocarbon compounds – Saturated compound synthesis – By condensation of a paraffin molecule with an olefin-acting...

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585715, C07C 262, C07C 256

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active

056251122

ABSTRACT:
A method and apparatus for indirectly heating a mixed phase stream by contact with a boiling surface located on the inside of the plurality of heat exchange tubes. Improved vaporization of the stream is achieved by equalizing the liquid distribution and the ratio of liquid and vapor entering each tube to overcome poor boiling film heat transfer. The invention uses a means for subdividing the flow entering the heat exchanger into a plurality of streams with each of the divided streams discharging directly into a heat exchange tube. The means for dividing the stream can include baffle arrangements or plugs providing pressure drop at the inlets to the tubes. This method and apparatus is particularly useful in contactors for the sulfuric acid catalyzed alkylation of hydrocarbons.

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patent: 4572287 (1986-02-01), Allo et al.
patent: 4607689 (1986-08-01), Mochida et al.
patent: 4769511 (1988-09-01), O'Neill
patent: 5091075 (1992-02-01), O'Neill et al.
patent: 5150749 (1992-09-01), Bergmann et al.

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