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Technology method used for preparing cyclohexylmethanol through benzyl alcohol hydrogenation

A technology for cyclohexyl alcohol and benzyl alcohol, applied in the field of hydrogenation of benzyl alcohol to prepare cyclohexyl alcohol, can solve the problems of complex steps, unfriendly environment and the like, and achieve the effects of saving energy consumption, simple technological process and saving energy

Pending Publication Date: 2019-11-26
TIANJIN ZHONGKE TUOXIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has complicated steps and is currently in the laboratory stage. During the reaction process, alkaline solution and acidic solution are added dropwise, and potassium chloride is generated at the same time, which is not environmentally friendly.

Method used

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  • Technology method used for preparing cyclohexylmethanol through benzyl alcohol hydrogenation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Attached below figure 1 The present invention will be further described with reference to specific embodiments.

[0029] The new hydrogen and the hydrogen from the separation tank V101 are mixed and then compressed to an appropriate pressure by the hydrogen compressor K101, and mixed with the benzyl alcohol raw material in the mixer MX101, the hydrogen-oil ratio is 300:1, and the mixed material enters the preheater E101 The material is completely gasified, and then enters the first reactor R101 for hydrogenation reaction, the reaction pressure is 0.2MPa, the temperature is 200°C, and the space velocity is 0.2h -1 , the reaction product enters the second reactor R102 for further reaction, the ratio of hydrogen to oil is 300:1, the reaction pressure is 0.15MPa, the temperature is 200°C, and the space velocity is 1h -1 , the bottom material of the second reactor enters the third reactor R103 to continue the reaction to the end of the reaction, the hydrogen oil ratio is 30...

Embodiment 2

[0034] The new hydrogen and the hydrogen from the separation tank V101 are mixed and then compressed to an appropriate pressure by the hydrogen compressor K101, and mixed with the benzyl alcohol raw material in the mixer MX101. The hydrogen-oil ratio is 700:1. The material is completely gasified, and then enters the first reactor R101 for hydrogenation reaction, the reaction pressure is 1MPa, the temperature is 250°C, and the space velocity is 0.2h -1 , the reaction product enters the second reactor R102 for further reaction, the ratio of hydrogen to oil is 500:1, the reaction pressure is 1MPa, the temperature is 250°C, and the space velocity is 1h -1 , the bottom material of the second reactor enters the third reactor R103 to continue the reaction to the end of the reaction, the hydrogen oil ratio is 500:1, the reaction pressure is 1MPa, the temperature is 200°C, and the space velocity is 2h -1 . The bottom material of R103 enters the reboiler E104 of T101 and the reboiler E...

Embodiment 3

[0039] The new hydrogen and the hydrogen from the separation tank V101 are mixed and compressed to an appropriate pressure by the hydrogen compressor K101, and mixed with the benzyl alcohol raw material in the mixer MX101, the hydrogen-oil ratio is 500:1, and the mixed material enters the preheater E101 to The material is completely gasified, and then enters the first reactor R101 for hydrogenation reaction, the reaction pressure is 1MPa, the temperature is 250°C, and the space velocity is 0.2h -1 , the reaction product enters the second reactor R102 for further reaction, the ratio of hydrogen to oil is 500:1, the reaction pressure is 1MPa, the temperature is 200°C, and the space velocity is 1h -1 , the bottom material of the second reactor enters the third reactor R103 to continue the reaction to the end of the reaction, the hydrogen oil ratio is 300:1, the reaction pressure is 0.5MPa, the temperature is 180°C, and the space velocity is 2h -1 . The bottom material of R103 en...

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Abstract

The invention relates to a technology method used for preparing cyclohexylmethanol through benzyl alcohol hydrogenation. The technology method comprises following steps: new hydrogen gas and hydrogengas from a separation tank V101 are mixed, and are compressed using a hydrogen compressor K101, and mixing with benzyl alcohol raw material in a mixer MX101 is carried out, an obtained mixture is introduced into a pre-heater E101 for complete material gasification, the obtained material is introduced into a first reactor R101, a second reactor R102, and a third reactor R103, and then is deliveredthrough a lightness-removing column T101 reboiler E104, and a cyclohexylmethanol column T102 rebioler E202 for heat supply, is delivered through a reaction product cooler E102 for cooling, and is introduced into the separation tank V101 for gas liquid separation, an obtained gas phase is recycled back into the compressor K101, an obtained liquid phase is introduced into the lightness-removing column T101 as a raw material, an obtained column bottom material is introduced into the cyclohexylmethanol column T102, cyclohexylmethanol is discharged through T102 column top, and heavy components aredischarged through the column bottom. The technology process is simple; cyclohexylmethanol continuous production is realized; and enterprise benefit is increased.

Description

technical field [0001] The invention relates to a method for preparing cyclohexylmethanol, in particular to a process for preparing cyclohexylmethanol by hydrogenating benzyl alcohol. Background technique [0002] Cyclohexylmethanol has the same chemical properties as other alcohols, and can undergo oxidation, esterification, etherification, and halogenation reactions. Cyclohexylmethanol and 4-methylthio-2-oxobutanoic acid can undergo esterification reaction to generate 4-methylthio-2-oxobutanoic acid cyclohexylmethyl ester, which can be used to treat liver, kidney, pancreas and brain disease; 4-hydroxybenzoic acid and cyclohexylmethanol esterification reaction generates 4-hydroxybenzoic acid cyclohexyl methyl ester, and then can carry out aminomethylation reaction with tetrahydropyrrole and formalin aqueous solution to generate hydroxyl two (pyrrolidinylmethyl) Cyclohexylmethyl benzoate, the compound can be prepared into antiarrhythmic drugs; hydroxypolyethoxymethylcyclohe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/27C07C29/20C07C29/74C07C29/80
CPCC07C29/20C07C29/74C07C29/80C07C31/276
Inventor 曾宪友
Owner TIANJIN ZHONGKE TUOXIN TECH CO LTD
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