Method for coproducing cyclohexanol and ethanol

A technology of cyclohexanol and ethanol, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc.

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] So far, in the prior art, there is no information disclosure about the addition and esterification of cyclohexene and acetic acid, and then hydrogenation to co-produce cyclohexanol and ethanol, and there is no information about the hydrogenation of cyclohexyl acetate. Information disclosure on the production of cyclohexanol and ethanol

Method used

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  • Method for coproducing cyclohexanol and ethanol
  • Method for coproducing cyclohexanol and ethanol
  • Method for coproducing cyclohexanol and ethanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Grind the high-temperature-resistant sulfonic acid ion-exchange resin (Amberlyst45, produced by Rhom&Hass) with a multi-stage high-speed pulverizer into a powder with a particle size of less than 200 mesh (0.074mm), and add pore-forming agents, lubricants, and antioxidants Mix evenly with the adhesive on a high-speed mixer, and then banbury on an internal mixer at 180°C for 10 minutes to make the material completely plasticized, and then inject it into a mold to make a Raschig ring shape with a diameter of 5mm, a height of 5mm, and a wall thickness of 1mm. Resin catalyst packing. Put 1950mL of this packing into the middle of the model reaction tower (1m in height, equivalent to 8 theoretical trays) and 1950mL of glass spring packing with a diameter of 3mm and a length of 6mm (filling height is 1m, equivalent to 10 theoretical trays). plate). The cyclohexene and acetic acid were pumped into the preheater by the metering pump to preheat and enter the reaction tower, and ...

Embodiment 2

[0084] The configuration of reaction tower and catalyst is identical with embodiment 1. Only cyclohexene, cyclohexane and benzene mixture were used instead of cyclohexene for experimentation, and the reaction tower was operated under the condition of 0.3MPa. Adjust the heating capacity of the tower kettle and the reflux flow at the top of the tower to continuously react. The reaction conditions and reaction results under stable operation are shown in Table 2.

Embodiment 3

[0086] The ball type H of φ3~4 0.5 Cs 25 PW 12 o 40 / SiO 2 Catalyst (by H 0.5 Cs 25 PW 12 o 40 Powder and coarse-pore silica gel powder with a particle size of less than 200 meshes are fully mixed in a mixer, rolled into a ball in a sugar coating machine with silica sol as a bonding machine, and then dried and roasted) sandwiched into a titanium mesh wave In the plate, a cylindrical structured packing with a diameter of 50 mm and a height of 50 mm was made. Put this packed catalyst L into the middle of the model reaction tower (1m in height, equivalent to 12 theoretical trays), and put 1950mL glass spring packing with a diameter of 4mm and a height of 4mm in the upper and lower parts (the packing height is 1m, equivalent to 15 block theoretical plate). The cyclohexene and benzene were pumped into the preheater by the metering pump to preheat and enter the reaction tower, and the heating capacity of the tower reactor and the reflux flow at the top of the tower were adj...

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Abstract

The invention relates to a method for coproducing cyclohexanol and ethanol, which comprises the following steps: carrying out addition esterification reaction on acetic acid and cyclohexene by using reaction rectification to prepare cyclohexyl acetate; and hydrogenating the cyclohexyl acetate to coproduce the cyclohexanol and ethanol. The method can be used for coproducing the cyclohexanol and ethanol at high efficiency and low cost.

Description

technical field [0001] The present invention relates to a method for the coproduction of cyclohexanol and ethanol. Background technique [0002] Both cyclohexanol and ethanol are important chemical raw materials and solvents. Cyclohexanol is mainly used to produce nylon 6, nylon 66, etc., while ethanol is a raw material for synthetic esters and other chemical products, and is also widely used as a fuel additive for gasoline. [0003] The method of industrially synthesizing ethanol is mainly the direct hydration method of ethylene, but in some countries rich in agricultural and sideline products, the fermentation method is still the main method of ethanol production. Due to the large population and insufficient arable land in our country, and the problem of "competing with the mouth for food" in the production of ethanol by fermentation, the fermentation method does not conform to the national conditions of our country. In addition, the pollution of the fermentation method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C35/08C07C31/08C07C29/149C07C69/14C07C67/04
CPCC07C29/149C07C67/04C07C2601/14C07C35/08C07C31/08C07C69/14
Inventor 温朗友宗保宁慕旭宏杨克勇俞芳郜亮董明会喻惠利夏玥朣
Owner CHINA PETROLEUM & CHEM CORP
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