Extraction device and extraction method of volatile plant essential oil

Abstract

The invention discloses an extraction device and an extraction method of volatile plant essential oils. The extraction device comprises: a still, a gas phase booster pump, a partial condensation and liquid separation unit and a gas phase circulation pipeline; wherein, the outlet of the still is connected to the gas phase booster The inlet of the pressure pump is connected, the outlet of the gas phase booster pump is connected with the inlet of the partial condensation liquid separation unit, the top of the partial condensation liquid separation unit is connected with the distillation kettle through the gas phase circulation pipeline, and a valve is set on the gas phase circulation pipeline, and the partial condensation liquid separation unit The liquid unit is provided with an outlet for essential oil products and an outlet for aromatic water. The extraction device of the present invention can effectively improve the extraction efficiency of volatile essential oils, and at the same time greatly reduce the consumption of water vapor, which is easy to realize through upgrading and transformation of existing industrial steam distillation equipment, and has good application and promotion prospects.

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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