Litsea cubeba oil distillation separation equipment and technology

Abstract

The invention discloses litsea cubeba oil distillation separation equipment and a technology. The litsea cubeba oil distillation separation equipment comprises a distillation still, a condenser and oil-water separators, wherein the distillation still, the condenser and the oil-water separators are connected in series; a jacket covers the outside of the distillation still; heating media are introduced into the jacket; the inside of the distillation still is also connected with a steam pipeline in the distillation still, and external normal pressure heating distillation and internal pressurization heating distillation can be respectively realized; the top of the distillation still is provided with a distillation column section, and the distillation column section is connected with the inlet of the condenser through an inclined air duct; the oil-water separators are in two-stage serial connection, wherein the oil-water feeding hole of the first-stage oil-water separator is connected with the outlet of the condenser, the oil-water feeding hole of the second-stage oil-water separator is connected with the water outlet of the first-stage oil-water separator, and the water outlet of the second-stage oil-water separator is connected with a storage tank through a pump. According to different specification requirements of litsea cubeba essential oil, underwater distillation and overwater distillation are realized, pressurization distillation also can be realized, heat energy use ratio is high, energy consumption is lowered by 5-10%, a wastewater quantity is reduced by 10-30%, and the oil extraction rate and the quality of the litsea cubeba essential oil can be improved.

Description

technical field [0001] The invention relates to litsea cubeba oil distillation and separation equipment and technology, which belongs to oil distillation production technology. Background technique [0002] The main ingredient in litsea cubeba oil is citral, which is used to formulate natural citrus and lemon flavors. The annual output of litsea cubeba oil is about 800-1000 tons, and a large amount of litsea cubeba oil and natural citral are exported in my country every year. [0003] The traditional litsea cubeba oil processing method is to obtain the litsea cubeba fruit through steam distillation, such as the technical scheme recorded in the Chinese patent application document with the publication number CN104120036A, the oil farmer concentrates the litsea cubeba crude oil obtained by distillation It is sold to a large-scale Litsea cubeba oil fine processing company to refine natural citral and standardized Litsea cubeba essential oil. However, the quality and color of l...

AI Technical Summary

Problems solved by technology

However, the quality and color of litsea cubeba crude oil vary greatly from place to place, and the content of citral in it ranges from 58-75%, which increases the process and difficulty of subsequent finishing

[0004] The difference in the quality of litsea cubeba crude oil is mainly due to the simplicity and backwardness of the distillation equipment for the primary processing of litsea cubeba oil. The main problems are as follows: (1) poor equipment, defects in equipment structure, safety, etc. , pressure and other parameters to adjust the process in time and standardize the operation process, resulting in the lag of adjustment affecting the yield and quality; (2) most of the distillation equipment is made of carbon steel, which is easy to rust, which not only affects the production The color and quality of Litsea Cubeba Oil have a negative impact, and the thinning of distillation equipment and pipelines due to corrosion is likely to cause serious safety accidents; (3) there is a large loss and waste of heat generated by the boiler, and the waste water produced by the process is relatively large. Many; (4) The oil-water separation equipment is currently in the shape of a cuboid, and the oil-water boundary cannot be seen, and the oil layer cannot be effectively collected, and more water and other impurities are collected, which reduces the efficiency and increases the subsequent dehydration and impurity removal process; (5) The distillation kettle is simple and poor in terms of sealing and safety. Especially when many oil farmers use boilers of 1 steam ton, 2 steam tons, and 4 steam tons to supply heat, higher requirements are put forward for distillation equipment and safe operation. requirements

[0005] Due to the uneven technical level of various oil farmers, non-standard operating processes, and insufficient equipment management and safety management, the oil yield and quality are unstable, which not only affects the benefits of oil farmers, but also improves the follow-up quality of litsea cubeba oil. processing cost

With the changes in the industry, small-scale oil farmers have decreased, and large-scale processing households have gradually formed. However, equipment, technology, and safety have not been followed up in time, which is very unfavorable for the healthy development of the litsea cubeba oil industry.

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