Technique for extracting rose essential oil

Abstract

The invention discloses a method for extracting rose essential oil, which is characterized by mixing roses and water into a pneumatic opening and closing retort, then passing steam into the jacket of the pneumatic opening and closing retort, and using a stirring device Heating while stirring is carried out in the pneumatic open and closed distillation tank. After the steam generated in the pneumatic open and closed distillation tank is subjected to the secondary distillation of the distillation column, it is condensed by the condenser and cooled by the cooler, and then the secondary oil and water are separated. Get rose essential oil products. In the present invention, steam is introduced into the jacket of the distillation tank for heating. Due to the large heating area and fast heating speed, after the roses and water in the distillation tank are heated, the thermal reaction is carried out in a dynamic state under the stirring of the stirring device. , without affecting the internal quality of roses, maintaining the original properties and transparency of roses, using secondary oil-water separation, the oil and water are completely separated, and the quality, yield and purity of rose essential oil are improved.

Description

【Technical field】 [0001] The invention relates to a method for extracting Chinese medicinal materials, in particular to a method for extracting rose essential oil. 【Background technique】 [0002] In the prior art, the extraction method of rose essential oil is to put roses and water into the upper and lower conical distillation tanks to directly heat the water, and the heated steam is condensed through the tubular condenser, and then passed through the oil-water separator Separation to obtain rose essential oil. Since this extraction method uses a conical retort up and down, and uses dry steam to directly pass into the retort for heating, the residue after distillation can only be dug out manually in the hole on the side of the retort, and the roses are attached to the retort. Due to the coking phenomenon caused by high temperature on the pipe, it is very difficult to clean, and it is very labor-intensive and time-consuming. Since the dry steam is use...

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Problems solved by technology

Since this extraction method uses a conical retort up and down, and uses dry steam to directly pass into the retort for heating, the residue after distillation can only be dug out manually in the hole on the side of the retort, and the roses are attached to the retort. Due to the coking phenomenon caused by high temperature on the pipe, it is very difficult to clean, and it is very labor-intensive and time-consuming. Since the dry steam is used without separation and purification, the heat source and impurities in the steam directly damage the roses during the entire static thermal reaction process. Composition and properties make the distilled rose oil turbid and smelly, black spots remain in the oil, which affects the quality of rose oil, and this method uses a tubular condenser for cooling, so that the rose oil The gas and liquid cannot be completely cooled when entering the condenser, resulting in the loss of rose oil gas and liquid. At the same time, an oil-water separator is used for separation, so that the oil and water cannot be completely separated, which directly affects the yield and purity of rose oil.

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