Distillation column
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United States of America Patent
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app pub date -
Jan 9, 2015
filing date -
Jan 17, 2014
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Abstract
Significant energy saving can be achieved for a distillation column even when the distillation column has a large column temperature difference. Provided is a distillation column including a first and second columns, wherein the first column includes a part of a rectifying section or a part of a stripping section; the second column includes, if the first column includes a part of the rectifying section, the rest of the rectifying section and the whole of the stripping section, or the second column includes, if the first column includes a part of the stripping section, the rest of the stripping section and the whole of the rectifying section; and the second column constitutes a mechanical-heat-pump distillation column.
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