Distillation method
Assignees2S-Sophisticated Systems Limited, Buss-Sms-Canzler GmbH
InventorsStephan Rüdiger Blum, Bernhard Kaiser
Life of this patent
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Abstract
A method for distilling ethanol from a mash includes feeding a fluid to a first distillation column. The fluid and a distillate of the first distillation column are delivered to a second distillation column. The fed fluid and/or distillate of the second distillation column is/are purified in a first and/or last step of the method by a membrane separation process.
Claims20
A method of distillation of ethanol from a mash, comprising the steps of:
- feeding the mash into a first distillation column;
- feeding a distillate of the first distillation column to a second distillation column;
- and
- purifying the mash before the mash is fed into the first distillation column, the purifying being performed by a membrane separation process, wherein a permeate of the purifying of the mash is fed into the second distillation column and a ratio of a retentate of the purifying of the mash to a permeate of the purifying of the mash is between 1:1 and 1:8.
A method of distillation of ethanol from a mash, comprising the steps of:
- feeding the mash into a first distillation column;
- feeding a distillate of the first distillation column to a second distillation column;
- and
- purifying the mash before the mash is fed into the first distillation column, the purifying being performed by a membrane separation process;
- wherein a permeate of the purifying of the mash is mixed with the distillate of the first distillation column and fed into the second distillation column and the mixed permeate and the distillate fed into the second distillation column is maintained in liquid phase at a boiling point.
A method of distillation of ethanol from a mash, comprising the steps of:
- feeding the mash into a first distillation column;
- feeding a distillate of the first distillation column to a second distillation column;
- and
- purifying the mash before the mash is fed into the first distillation column, the purifying being performed by a membrane separation process;
- wherein a permeate of the purifying of the mash and the distillate of the first distillation column are fed separately into the second distillation column and the permeate and the distillate that are fed separately into the second distillation column are maintained in liquid phase at a boiling point.
A method of distillation of ethanol from a mash, comprising the steps of:
- feeding the mash into a first distillation column;
- feeding a distillate of the first distillation column to a second distillation column;
- and
- purifying a distillate from the second distillation column, the purifying being performed by a membrane separation process;
- wherein the membrane separation process employs a plurality of parallel-connected membrane modules and the distillate of the second distillation column is purified and is heated prior to being purified by the membrane separation process.
A method of distillation of ethanol from a mash, comprising the steps of:
- feeding the mash into a first distillation column;
- feeding a distillate of the first distillation column to a second distillation column;
- and
- purifying a distillate from the second distillation column, the purifying being performed by a membrane separation process;
- wherein the membrane separation process employs a plurality of parallel-connected membrane modules and a portion of a retentate of the membrane modules is returned to each of the membrane modules as a flushing stream at a permeate side, and wherein after the portion of the retentate has passed through the membrane modules, the passed retentate is fed as a mixture with a permeate that forms in the second distillation column as a feed stream.
A method of distillation of ethanol from a mash, comprising the steps of:
- feeding the mash into a first distillation column;
- feeding a distillate of the first distillation column to a second distillation column;
- and
- purifying a distillate from the second distillation column, the purifying being performed by a membrane separation process;
- wherein the membrane separation process employs a plurality of parallel-connected membrane modules and a permeate of the membrane modules is preheated by heat of a bottom product removed from the second distillation column.
Dependencies are inferred from the claim text.