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单词 fractional distillation
释义
fractional distillation
noun[U]
chemistryspecialized
uk
/ˌfræk.ʃən.əl dɪs.tɪˈleɪ.ʃən/us
/ˌfræk.ʃən.əl dɪs.təˈleɪ.ʃən/
thechemicalprocessofseparatingdifferentsubstancesthat have differentboilingpointsbyheatingaliquidmixtureuntil itturnsintogasand thencoolingandcollectingeachsubstanceseparately
分馏（化学过程，将液体混合物加热，使其中沸点不同的各个物质气化，再分别冷却收集，从而得到分离）
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(Definition offractional distillationfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)
Examples from literature
  • In this fractional distillation a vast variety of products are now obtained.
  • The ethers are returned as ethyl acetate, but from fractional distillation amyl acetate was found to be present.
  • This apparatus was the forerunner of that used to-day, for effecting the separation of liquids which boil at different temperatures, by the process called fractional distillation.

fractional distillation| American Dictionary

fractional distillation
noun[U]
us/ˈfræk·ʃə·nəl ˌdɪs·təlˈeɪ·ʃən/
chemistry
theprocessofseparatingpartsof aliquidbyheatingitgraduallyso that differentpartsbecomegas,riseup, thenturnback intoliquidthat can becollectedas theycool
(Definition offractional distillationfrom theCambridge Academic Content Dictionary© Cambridge University Press)

Examplesoffractional distillation

fractional distillation
Ramsay continued to search for these gases using the method offractionaldistillationto separate liquid air into several components.
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It consists mostly of organic compounds obtained by thefractionaldistillationof petroleum, enhanced with a variety of additives.
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Bitumen is obtained byfractionaldistillationof crude oil.
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The individual components of resin can be separated byfractionaldistillation.
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For this reason, ethanol can not be completely purified by directfractionaldistillationof ethanol-water mixtures.
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The volatile fluorides can be separated from excess fluorine by condensation, then separated from each other byfractionaldistillationor selective reduction.
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Helium is extracted byfractionaldistillationfrom natural gas, which contains up to 7% helium.
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The products of these reactions are separated using a variety of techniques including distillation especiallyfractionaldistillation, precipitation, crystallization, adsorption, filtration, sublimation, and drying.
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These "fractions" are the origin of the term "fractionaldistillation" or "fractionation".
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Thisfractionaldistillationsupported the use of heavy oil fuels, the unusable tars and asphalts separating out in the vapouriser.
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Xylidines are produced as byproducts offractionaldistillationof coal tar.
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Kerosene, when it was introduced in the early 1850s, was much cheaper and easily made byfractionaldistillationof petroleum.
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Chlorosilanes obtained from crude silicon are purified byfractionaldistillationtechniques and then reduced with hydrogen to give silicon of purity.
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Neon, argon, krypton, and xenon are obtained from air in an air separation unit using the methods of liquefaction of gases andfractionaldistillation.
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For large-scale use, helium is extracted byfractionaldistillationfrom natural gas, which can contain up to 7% helium.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/fractional-distillation##
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更新时间：2024/12/28 3:48:43