Method for removing odor substances in zanthoxylum bungeanum seed oil and wiped film type molecular distillation device used by method

Abstract

The invention discloses a method for removing odor substances in zanthoxylum bungeanum seed oil and a wiped film type molecular distillation device used by the method, the pretreated zanthoxylum bungeanum seed oil is distilled by molecular distillation equipment, the odor substances are removed from a light phase, and the finished zanthoxylum bungeanum seed oil is obtained from a heavy phase. According to the method, the molecular distillation device is used for distilling the pretreated zanthoxylum bungeanum seed oil, the odor substances are removed from the light phase, and the finished zanthoxylum bungeanum seed oil is obtained from the heavy phase so that the temperature can be well controlled, and the total beneficial substances of the zanthoxylum bungeanum seed oil are well prevented from being oxidized. For the wiped film type molecular distillation device, in the using process, a great factor influencing the separation effect is that the effective separation rate is low due to the fact that entrainment caused by rotation of the scraper plate directly contacts with the condensation pipe, and the technology cannot be popularized to large-scale production, for the problem, the applicant makes the following improvements on the wiped film type molecular distillation device, and the defects of the existing wiped film type molecular distillation device are overcome.

Description

technical field [0001] The invention relates to a method for removing odorous substances from prickly ash seed oil and a film-scraping molecular distillation device used therein, belonging to the grain and oil processing technology in the food field. Background technique [0002] Zanthoxylum bungeanum seed oil is made from Zanthoxylum bungeanum seed kernels, which are the by-products of Zanthoxylum bungeanum, through modern oil production technology and advanced equipment. , Linolenic acid. Zanthoxylum bungeanum seed oil is a high-grade health-care edible oil rich in α-linolenic acid. α-linolenic acid is an essential polyunsaturated fatty acid for the human body, an important component of human tissue cells, and an essential substance for human health. [0003] The production methods of Zanthoxylum bungeanum seed crude oil include pressing, organic solvent leaching, supercritical CO2 extraction and other processes. However, Zanthoxylum bungeanum seed crude oil has the chara...

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Problems solved by technology

[0004] 1. Because it is difficult to ensure that the installed equipment is completely level, firstly, there is a difference in the liquid volume of the overflowing liquid, which in turn makes part of the liquid film thicker, and some areas are thinner, resulting in a certain impact on the separation of heavy components and light components;

[0005] 2. Due to the relatively fast speed of the scraper in the existing scraped-film molecular distillation device, when the scraper encounters a large amount of liquid flow, it is easy to aggravate the phenomenon of mist splashing, and the contact of the mist with the condensation surface will affect the separation effect. To achieve large-scale production, the speed of the scraper is generally faster, but it also leads to a lower yield and cannot be used industrially;

[0006] 3 In the process of large-scale production, the scraper, as a flexible friction part, is prone to wear and tear. The scraper on the existing scraper is strip-shaped and is mostly compressed by bolts. The replacement needs to loosen the bolts one by one. The maintenance speed is slow and Easy to pollute the tank

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