Fractionating liquids
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United States of America Patent
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-
Jul 19, 1983
Issued Date -
N/A
app pub date -
Jul 27, 1981
filing date -
Jun 23, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In fractionating tower apparatus including a plurality of modules including multi-stage segments, the improvement comprising the combination of a plurality of vaporizers for heating feed liquid to different temperatures to vaporize fractions of correspondingly different volatilities, means for feeding the vaporized fractions to different multi-stage segments of the tower, means for withdrawing liquid sidestreams from a plurality of the segments, temperature control means for limiting the level of heavy components in at least one selected liquid sidestream withdrawn from a segment below a module in which vapor is flashed, and means for separately feeding reflux liquid from at least one segment to a segment below it.
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