| 11. | While vacuum distillation of ethanol is not presently economical, pressure-swing distillation is a topic of current research.
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| 12. | This instability was due to traces of impurities ( Richard Wolffenstein, who produced it by vacuum distillation.
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| 13. | Utilizing vacuum distillation can reduce the height and diameter, and thus the capital cost of a distillation column.
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| 14. | They are refined by vacuum distillation.
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| 15. | This originated beneath a Vacuum Distillation column at a steam out point where maintenance was being carried out.
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| 16. | Another advantage of vacuum distillation is the reduced capital cost, at the expense of slightly more operating cost.
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| 17. | Industrial-scale vacuum distillation has several advantages.
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| 18. | It once was a popular laboratory method for purification of organic compounds, but has become obsolete by vacuum distillation.
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| 19. | The project includes a 70, 000-bbl / day vacuum distillation unit, a sulfur recovery unit and a lube oil hydrocracker.
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| 20. | Pure MMA ( > 99.9 % ) is produced from the crude MMA in a series of vacuum distillations and separations.
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