Extraction device and extraction method for volatile plant essential oil

Abstract

An extraction device and an extraction method for volatile plant essential oil are disclosed. The device includes a distillation kettle, a gas phase booster pump, a partial condensation and liquid separation unit and a gas phase circulating pipeline. An outlet of the distillation kettle communicates with an inlet of the gas phase booster pump. An outlet of the gas phase booster pump communicates with an inlet of the partial condensation and liquid separation unit. The top of the partial condensation and liquid separation unit communicates with the distillation kettle through the gas phase circulating pipeline provided with a valve. The partial condensation and liquid separation unit is provided with an essential oil product outlet and an aromatic water outlet. The device can effectively increase the extraction efficiency of volatile essential oil, can greatly reduce steam consumption, can be achieved through upgrading and rebuilding a conventional industrial steam distillation device and has a wide application and promotion prospect.

Description

technical field [0001] The invention belongs to the technical field of essential oil extraction, and more specifically relates to an extraction device and an extraction method of volatile plant essential oil. Background technique [0002] Plant essential oils are natural specialty chemicals that have attracted wide attention. They usually have unique odors and physiological and even pharmacological effects. They are widely used in medical, health care, daily chemical and food fields, and the market consumption scale is expanding rapidly. However, the current industrial extraction process of plant essential oils generally faces the problems of low resource utilization efficiency, high energy consumption and high cost. It is of great significance to develop high-efficiency separation technology and optimize its thermodynamic efficiency to solve these problems. [0003] For the extraction of plant essential oils, the current mainstream industrial methods include steam distillat...

AI Technical Summary

Problems solved by technology

At present, the use of steam distillation to extract plant essential oils often faces the problem of low extraction efficiency of essential oil components. The main reasons are: (1) Incomplete extraction of raw materials, resulting in a high residual rate of essential oils in plant materials; (2) Steam condensation ability Insufficient, resulting in the loss of essential oil with gas phase leakage; (3) The large amount of distillation condensate, resulting in a large amount of essential oil dissolved in aromatic water and difficult to recover

The process of increasing the amount of steam or prolonging the distillation time can overcome the problem of incomplete extraction of raw materials, but it will further increase the output of condensate, which will cause more essential oils to dissolve in the water phase and cause losses; in addition, such Operation will also greatly increase energy consumption and reduce production capacity, so there are major limitations

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