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Device and method for synthesizing cyclopentanol from cyclopentene

A technology of cyclopentene and cyclopentanol, which is applied in the field of cyclopentene synthesis cyclopentanol equipment, can solve the problems of low conversion rate of cyclopentene, difficulty in industrialization, high equipment requirements, etc., and achieve easy operation, simple process, and easy operation low cost effect

Pending Publication Date: 2020-09-01
KAIRUI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cyclopentene hydration method that has attracted more attention is the cyclopentene hydration method, and the hydration method is divided into direct hydration method and indirect hydration method. The direct hydration method has the disadvantage that the conversion rate of cyclopentene is too low and its industrialization is difficult; while the sulfuric acid used in the indirect hydration method , the equipment requirements are relatively high, which increases the disadvantage of its cost

Method used

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  • Device and method for synthesizing cyclopentanol from cyclopentene
  • Device and method for synthesizing cyclopentanol from cyclopentene

Examples

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Effect test

Embodiment 1

[0053] A method for synthesizing cyclopentanol from cyclopentene, comprising the following steps:

[0054] (1) Pre-reaction: cyclopentene and acetic acid (the molar ratio of acetic acid and cyclopentene is 1.2:1) is fed from feed port A (space velocity is 5h -1 ) enters the reactor, reacts under the catalysis of the KC119 type acidic resin catalyst in the reactor to obtain cyclopentyl acetate, and the reaction product is cyclopentyl acetate generated by the reaction, unreacted ring KC119 type acidic resin catalyst pentyl Alkenes and unreacted acetic acid, the reaction product is discharged from the outlet A and enters the catalytic distillation tower through the inlet B; the reaction temperature of the reactor is 40°C, and the reaction pressure is 0.1MPa.

[0055] (2) catalytic distillation reaction: the reaction product obtained in step (1) (space velocity is 0.5h -1 ) into the catalytic distillation tower, unreacted cyclopentene, unreacted acetic acid continue to react in t...

Embodiment 2

[0060] A method for synthesizing cyclopentanol from cyclopentene, comprising the following steps:

[0061] (1) Pre-reaction: cyclopentene and acetic acid (the molar ratio of acetic acid and cyclopentene is 5:1) is fed from feed port A (space velocity is 0.5h -1 ) enters the reactor, reacts under the catalysis of the KC104 type mesoporous acidic resin catalyst in the reactor to obtain cyclopentyl acetate, and the reaction product is cyclopentyl acetate generated by the reaction, unreacted cyclopentene, Unreacted acetic acid, the reaction product is discharged from outlet A and enters the catalytic distillation tower through inlet B; the reaction temperature of the reactor is 50°C, and the reaction pressure is 0.5MPa.

[0062] (2) catalytic distillation reaction: the reaction product obtained in step (1) (space velocity is 5h -1 ) into the catalytic distillation tower, unreacted cyclopentene, unreacted acetic acid continue to react in the catalysis of the KC104 type mesoporous ...

Embodiment 3

[0067] A method for synthesizing cyclopentanol from cyclopentene, comprising the following steps:

[0068] (1) Pre-reaction: cyclopentene and propionic acid (the molar ratio of propionic acid and cyclopentene is 8:1) is fed from feed port A (space velocity is 3h -1 ) into the reactor, react under the catalysis of the KIP213 type acid resin catalyst in the reactor to obtain cyclopentyl propionate, and the reaction product is cyclopentyl propionate generated by the reaction, unreacted cyclopentene, unreacted The reacted propionic acid, the reaction product is discharged from the outlet A and enters the catalytic distillation tower through the inlet B; the reaction temperature of the reactor is 120° C., and the reaction pressure is 1 MPa.

[0069] (2) catalytic distillation reaction: the reaction product obtained in step (1) (space velocity is 5h -1 ) into the catalytic distillation tower, unreacted cyclopentene, unreacted propionic acid continue to react in the catalysis of the...

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Abstract

The invention discloses a device and a method for synthesizing cyclopentanol from cyclopentene. The device comprises a reactor, a catalytic distillation tower, a hydrolysis tower and a fractionating tower which are connected in sequence, cyclopentene and an organic acid are subjected to a pre-reaction in a reactor, and are subjected to a catalytic distillation reaction in thecatalytic distillationtower to obtain a heavy component containing organic acid cyclopentyl ester; hydrolyzing of the heavy component containing organic acid cyclopentyl ester is carried out to obtain cyclopentanol and alight component containing an organic acid aqueous solution; and fractionating of the light component containing the organic acid aqueous solution is carried out to obtain the organic acid. The methodis high in cyclopentene conversion rate, high in cyclopentanol yield and low in equipment and operation cost.

Description

technical field [0001] The invention relates to a device and a method for synthesizing cyclopentanol from cyclopentene, belonging to the technical field of chemical engineering. Background technique [0002] Cyclopentanol is an important chemical raw material, and its traditional preparation method is: using adipic acid as raw material, decarboxylation and hydrogenation to prepare cyclopentanol. Due to the high environmental pollution of this method, people began to develop other cyclopentanol preparation technologies. The cyclopentene hydration method that has attracted more attention is the cyclopentene hydration method, and the hydration method is divided into direct hydration method and indirect hydration method. The direct hydration method has the disadvantage that the conversion rate of cyclopentene is too low and its industrialization is difficult; while the sulfuric acid used in the indirect hydration method , relatively high equipment requirements, increasing the d...

Claims

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Application Information

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IPC IPC(8): C07C29/09C07C35/06C07C29/80
CPCC07C29/095C07C29/80C07C67/04C07C2601/08C07C35/06C07C69/14Y02P20/10
Inventor 郭为磊张美娟毛进池尹志义杨建波
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH
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