Method for preparing cyclopentanol through hydratation of cyclopentene

A cyclopentene hydration and cyclopentene technology, which is applied in the preparation of hydroxyl addition and organic chemistry, can solve the problems of poor miscibility between alkenes and water and low reaction rate, so as to reduce production costs, optimize reaction conditions, and strengthen microscopic mixed effect

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a method for producing cyclopentanol without adding any solvents and additives, which avoids the separation of non-reactive solutions while achieving high conversion rates, and solves the problem of poor miscibility between alkenes and water. , the reaction system is two-phase, and the reaction rate is low

Method used

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  • Method for preparing cyclopentanol through hydratation of cyclopentene
  • Method for preparing cyclopentanol through hydratation of cyclopentene
  • Method for preparing cyclopentanol through hydratation of cyclopentene

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Embodiment 1

[0018] Cyclopentene and water are pumped into the static mixer according to a certain ratio, and after being quickly mixed by impacting static components in the static mixer, they enter the hydration reactor, and the reacted materials enter the phase separator for gas-liquid separation. The unreacted gas phase cyclopentene is circulated to the inlet of the static reactor, and the liquid phase enters the product separation to obtain the cyclopentanol product. The static mixer adopts the standard SV type static mixer.

[0019] The hydration reactor is carried out in a stainless steel reactor of Φ18mm×1200mm, and 30ml of DNW-II temperature-resistant resin catalyst produced by Dandong Mingzhu Special Resin Co., Ltd. is loaded into the reactor, and the top and bottom of the reactor are respectively loaded with a diameter of Φ0 .5mm ~ 1.2mm quartz sand, after the reactor is installed, replace it with nitrogen three times, and pass the airtight test, control the reaction temperature ...

Embodiment 2

[0021] According to the method of embodiment 1, static mixer adopts SY type standard static mixer.

Embodiment 3

[0023] According to the method of embodiment 1, static mixer adopts SL type standard static mixer.

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Abstract

The invention discloses a method for preparing cyclopentanol through hydratation of cyclopentene. The method comprises the following steps of: continuously mixing the cyclopentene and water uniformly by using a static mixer; performing hydratation in a reactor loaded with a strong acid cation exchange resin catalyst; allowing materials obtained through reaction to enter a phase separator for gas-liquid separation; returning unreacted gas phase cyclopentene to the static mixer, and ensuring that the obtained liquid phase contains cyclopentanol and water; and separating products to obtain the cyclopentanol. Compared with the prior art, the method has the advantages that: a reaction system is not added with any solvent or aid, so the technological process is simple, the per pass conversion of the cyclopentene is high, the selectivity of the cyclopentanol is high, a few byproducts are generated, the products are more easy to separate, energy consumption is low, and the method can be applied to the hydratation for water-insoluble C2-C5 hydrocarbons.

Description

technical field [0001] The invention discloses a method for preparing cyclopentanol by hydrating cyclopentene, in particular a method for preparing cyclopentanol through hydration reaction in the presence of strongly acidic cation exchange resin. Background technique [0002] Cyclopentanol is an important intermediate of fine chemical products, mainly used in the preparation of bromocyclopentane, chlorocyclopentane, etc., and can be used to manufacture antibacterial, antiallergic and other drugs. Cyclopentanol can be obtained from adipic acid through high-temperature deacidification to obtain cyclopentanone, and then through hydrogenation reaction. However, due to the large amount of pollutants and the restriction of raw material sources, this preparation method is gradually eliminated. In addition, C 5 In the distillate, cyclopentene obtained through separation is used as raw material, and cyclopentanol can also be produced through hydration reaction. There are two main m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C35/06C07C29/04
Inventor 霍稳周吕清林刘野魏晓霞李花伊
Owner CHINA PETROLEUM & CHEM CORP
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