An entrainer for separating bicyclic and polycyclic alkanes and a method for separating bicyclic and polycyclic alkanes using the entrainer
A polycycloalkane and entrainer technology, which is applied in the field of petrochemical separation engineering, can solve problems such as difficult separation of trans-decalin, achieve high separation accuracy and avoid condensation reactions
Active Publication Date: 2019-11-05
军事科学院系统工程研究院军事新能源技术研究所
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Problems solved by technology
It was found in the test that although the gasification temperature can be lowered by vacuum distillation, it is difficult to separate trans-decalin
Method used
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Embodiment 1
[0024] An entrainer for separating bicyclic and polycyclic alkanes is composed of 10%-90% of water and 10%-90% of organic oxygen-containing compounds in terms of mass percentage. The organic oxygen-containing compound is one of carbon three, carbon four, carbon five, carbon six low-carbon alcohols, furfuryl alcohol, tetrahydrofurfuryl alcohol, n-propanol, n-butanol, cyclopentanol or dioxane or more.
Embodiment 2
[0026] The entrainer for separating bicyclic and polycyclic alkanes is composed of 50%-70% water and 30%-50% n-butanol in terms of mass percentage.
Embodiment 3
[0028] The entrainer for separating bicyclic and polycyclic alkanes is composed of 40%-70% water, 20%-35% n-butanol and 10%-25% cyclopentanol in terms of mass percentage.
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The invention discloses an entrainer for separating bicyclic alkane and polycyoalkane and a method using the entrainer to separate bicyclic alkane and polycyoalkane, in particular to a multi-element entrainer for separating trans-decalin and exo-tetrahydrodicyclopentadiene with same boiling point. The entrainer is prepared from water and an organic oxygen-containing compound with certain polarity, wherein the organic oxygen-containing compound and the water can form azeotrope. The entrainer has the advantages that the bicyclic alkane and polycyoalkane can be effectively separated at normal pressure, especially the distillation separation of the trans-decalin and the exo-tetrahydrodicyclopentadiene; the condensation reaction of the exo-tetrahydrodicyclopentadiene in the distilling process is avoided.
Description
technical field [0001] The invention relates to an entrainer for separating bicyclic and polycyclic alkanes and a method for separating bicyclic and polycyclic alkanes with the entrainer, especially for separating trans-decalin and pentahydrodicyclopentadiene which have almost the same boiling point The multi-component entrainer belongs to the field of separation engineering of petrochemical industry. Background technique [0002] Polycycloalkanes generally have higher density and combustion calorific value, and can be used as high-density fuels, such as dicyclopentadiene (DCPD) to prepare bridged tetrahydrodicyclopentadiene (endo-THDCPD) by hydrogenation, and then through iso Texturization reaction can get hang-type tetrahydrodicyclopentadiene (exo-THDCPD), hang-type tetrahydrodicyclopentadiene (exo-THDCPD) is a kind of low-temperature liquid high-density fuel with excellent performance, widely used as missile, aircraft and torpedo propellants. [0003] The isomerization ...
Claims
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IPC IPC(8): C07C7/06C07C13/50C07C13/61
CPCC07C7/06C07C13/50C07C13/61
Inventor 安高军熊春华赵会吉鲁长波刘晨光周友杰王旭东任连岭
Owner 军事科学院系统工程研究院军事新能源技术研究所