Dry distillation equipment for dynamic circulation extraction of spices

Abstract

The invention discloses dry distillation equipment for dynamic circulation extraction of spices. The dry distillation equipment comprises a dry distillation extraction kettle, a multi-stage condensation recovery device, an air pump and an air preheating device, wherein the dry distillation extraction kettle comprises a raw material bin, a far infrared heating jacket, a temperature probe, an air outlet I and an air inlet I; the multi-stage condensation recovery device comprises an air condenser, a water condenser, a spice collecting tank, a freezing liquid condenser and a liquid N2 cold trap which are sequentially connected by a pipe; the air outlet I of the raw material bin is connected to the air inlet II of the air condenser by a pipe, the air outlet of the liquid N2 cold trap is connected to a passage valve I, the air pump, a passage valve II and the gas preheating device through a pipe, and the gas preheating device is connected with the air inlet I of the raw material bin througha pipe. Air is repeatedly circulated in the system to dynamically complete the process of extracting and recovering spices. The dry distillation equipment has no solvent, and has the outstanding advantages of safety, environmental protection, excellent quality and low cost, and can be used to obtain thermal cracking spices.

Description

technical field [0001] The invention belongs to the technical field of extraction of natural spices, and in particular relates to an extraction device for extracting aroma substances in aroma raw materials by the principle of dry distillation. Background technique [0002] The extraction of natural spices usually includes traditional extraction, subcritical extraction, and supercritical extraction. Traditional extraction methods usually include steam distillation and solvent extraction. Steam distillation uses water distillation, water distillation and direct steam. Distillation method, solvent extraction method uses a solvent to extract the active ingredients of the aroma raw material, the extraction agent is: such as ethanol, petroleum ether, benzene, ethyl acetate, water, etc.; the subcritical extraction method uses a pressure lower than the critical pressure to extract the aroma raw material active ingredients, the solvent is butane, propane, etc.; the supercritical extr...

AI Technical Summary

Problems solved by technology

[0003] The essential part of spices is a volatile component, and the steam distillation method can directly obtain the volatile oil, but the extraction method itself is directly limited, and the steam distillation method can only obtain the fat-soluble volatile oil, but not the water-soluble volatile component, so, get low rate

However, the solvent method, subcritical extraction method, and supercritical extraction method have high yields, but the obtained extracts or absolute oils contain a large amount of non-volatile non-aromagenic components, so the aroma intensity of the products is relatively weak.

More importantly, there are many spices, such as agarwood, sesame, coffee, peanuts, tobacco leaves, etc., which need to be produced at high temperature to produce aroma. Among them, most of the most penetrating top fragrances are lost

[0004] At present, there are relatively innovative retort equipment in China, which can repeatedly retort raw materials to achieve the effect of sufficient material reaction, but the retort environment is single and can only meet one retort condition

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