Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Efficient energy-saving process for continuously processing dihydromyrcenol

A technology for dihydromyrcenol and dihydromyrcene, which is applied in the field of continuous production of dihydromyrcenol, can solve the problems of high production cost, long reaction time, complicated operation, etc., and achieves reduction of equipment material and replacement process. Continuous, continuous and stable operation

Active Publication Date: 2010-03-31
厦门中坤化学有限公司 +1
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In industry, the integrated process of fixed bed and rectification tower is applied to the direct hydration of dihydromyrcene. This process is a batch operation with simple process and high conversion rate, but it also has high energy consumption, cumbersome operation and long reaction time. Long, high production costs and other issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Efficient energy-saving process for continuously processing dihydromyrcenol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dihydromyrcene, water and acetone solvent are 1: 1: 1 by mass ratio, reach 110 ℃ of reaction temperature through preheater 1, 2 and 3 respectively preheating, the pressure of strengthening jet reaction device 5 is 0.5MPa (gauge pressure ), and in the catalyst feeding device 4, enter into the strengthening spray reaction device 5 after mixing with the catalyst strong acid ion exchange resin Amberlyst 15 (produced by Rohm and Haas Company in the U.S.) (catalyst amount accounts for 10% of the material gross mass including solvent) . The material in the enhanced injection reaction device 5 enters the centrifugal pump 9 through the filter 17, passes through the heat exchanger 11, and is injected into the enhanced injection reaction device 5 by the injector 8 (the injector is provided by Shuanghong Engineering Technology Development Co., Ltd., the same below.) Inside. After the reaction was carried out for 3 hours, the valve 27 was opened to start discharging, and the materi...

Embodiment 2

[0028]Dihydromyrcene and water are 1: 1 by mass ratio, reach 105 ℃ of reaction temperature through preheater 1 and 2 respectively preheating, the pressure of strengthening injection reaction device 5 is 0.1MPa (gauge pressure), and in catalyst feeding device 4 enters into the enhanced injection reaction device 5 after being mixed with the catalyst strong acidic ion exchange resin Amberlyst 35 (produced by Rohm and Haas Company of the United States) (the amount of catalyst accounts for 12% of the total mass of the material). The reaction material in the enhanced injection reaction device 5 enters the centrifugal pump 9 through the filter 17 , passes through the heat exchanger 11 , and is sprayed into the enhanced injection reaction device 5 by the injector 8 . After the reaction was carried out for 3 hours, the valve 27 was opened, and the reactor began to discharge the material, which entered the phase separator 7. At the same time, the reaction material dihydromyrcene and wat...

Embodiment 3

[0030] Similar to the operation method of Example 1, dihydromyrcene, water and alcoholic solvent (ethanol, propanol or butanol) are 1: 1: 2 by mass ratio, and are preheated respectively through preheater 1, 2 and 3 to reach 115 ℃ of temperature of reaction, the pressure of strengthening spray reaction device 5 is 0.3MPa (gauge pressure), and in catalyst feeding device 4 and catalyst strongly acidic ion-exchange resin Amberlyst 36 (U.S. Rohm and Haas company production) (catalyst amount accounts for total 15% of the mass of the material) enters the enhanced injection reaction device 5 after being mixed. Other operating steps are the same as in Example 1. The conversion rate of dihydromyrcene in this hydration process is 99%, and the selectivity is more than 93%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an efficient energy-saving new process for continuously synthesizing dihydromyrcenol, which is a new technology for synthesizing the dihydromyrcenol by using an integrated system consisting of a reinforcing jet reaction device, a phase separator and a continuous rectification device. A catalyst complementing and replacing system is also arranged in the process flow. The process has simple process flow and high conversion rate, can improve the hydration reaction rate of dihydromyrcene by 1 to 3 times compared with a fixed bed reaction under the same condition, and savesthe energy consumption as high as about 50 percent.

Description

field of invention [0001] The invention relates to a process for continuously producing dihydromyrcenol with high efficiency and energy saving. Background technique [0002] Dihydromyrcenol (2,6-dimethyl-7-octen-2-ol) is an important spice with strong fruity, floral, green, woody and white lemon aromas. Good stability in soaps and detergents. Due to its unique aroma quality, it is widely used in flavor formulations and has a very broad market prospect. At present, there are two main methods for synthesizing dihydromyrcenol from dihydromyrcene, one is direct hydration method; the other is indirect hydration method. The indirect hydration method includes the two-step method of first esterification and then saponification and the method of first hydrochlorination and then hydrolysis. This method has problems such as cumbersome operation, long production cycle, small production capacity, acid and alkali corrosion equipment, and easy pollution of the environment by waste discha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C33/025C07C29/04C07C29/80B01J19/26B01J31/08C11B9/00
Inventor 张志炳刘勇周政傅华罗妮林力克杨毅融
Owner 厦门中坤化学有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com