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Supercritical carbon dioxide extraction method and device for reducing acid value of extractive

A technology of carbon dioxide and extracts, which is applied in the direction of producing fat, essential oils/flavors, etc., can solve the problems of large loss, lower content of active ingredients in extracts, and inapplicability of deacidification by alkali refining, so as to improve production efficiency and reduce acid value. Reduced effect, effect of rapid succession processing

Pending Publication Date: 2017-08-18
QINGDAO H EXTRACT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this type of extract is mostly a mixture of complex components, some of the active ingredients are not stable under alkaline conditions. If the alkali refining method is used for deacidification, it is easy to cause the reduction of the active ingredient content in the extract; Part of the product will be adsorbed during the saponification process, and the loss is too large
Therefore, alkaline deacidification is not suitable for such expensive extract products

Method used

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  • Supercritical carbon dioxide extraction method and device for reducing acid value of extractive

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, the supercritical carbon dioxide extraction device for reducing the acid value of the extract in this embodiment includes a refrigeration unit 4, a shell and tube condenser 3, a jacketed carbon dioxide storage tank 2, a high-pressure reciprocating pump 1, a liquid material replenishment device 5, Jacketed extraction tank 6 , shell and tube heater 7 , jacketed rectification column 8 , and jacketed separation tank 9 . The liquid material replenishment device 5 includes a charge pump, a one-way valve, and a material storage tank. The rectification tower 8 is a three-stage rectification tower.

[0035] The chilled water outlet of the refrigeration unit 4 communicates with the chilled water inlet of the condenser 3, the chilled water outlet of the condenser 3 communicates with the 2 chilled water inlets of the carbon dioxide storage tank, and the liquid state of the condenser 3 The carbon dioxide outlet is communicated with the carbon dioxide inl...

Embodiment 2

[0046] The supercritical carbon dioxide extraction device for reducing the acid value of the extract in this embodiment is the same as that in Embodiment 1.

[0047] The supercritical carbon dioxide extraction method that reduces extract acid value of the present embodiment comprises the following steps:

[0048] a. Use the high-pressure reciprocating pump 1 to extract the liquid carbon dioxide in the carbon dioxide storage tank 2 and pour it into the extraction tank 6. Use the liquid material replenishment device 5 to pump star anise oil into the extraction tank 6, and adjust the extraction pressure and temperature to 14 -15Mpa, 46-49℃, extraction for 4.5h;

[0049] b, during the extraction process, the carbon dioxide out of the extraction tank 6 is introduced into the heater 7 for heating;

[0050] c. Import the heated carbon dioxide from the heater 7 into the rectification tower 8, adjust the rectification pressure and temperature to 12-13Mpa, 41-44°C, and rectify until th...

Embodiment 3

[0057] The supercritical carbon dioxide extraction device for reducing the acid value of the extract in this embodiment is the same as that in Embodiment 1.

[0058] The supercritical carbon dioxide extraction method that reduces extract acid value of the present embodiment comprises the following steps:

[0059] a. Use the high-pressure reciprocating pump 1 to extract the liquid carbon dioxide in the carbon dioxide storage tank 2 and squeeze it into the extraction tank 6. Use the liquid material replenishment device 5 to pump the cumin oil into the extraction tank 6, and adjust the extraction pressure and temperature to 15 -16Mpa, 48-52℃, extraction for 5h;

[0060] b, during the extraction process, the carbon dioxide out of the extraction tank 6 is introduced into the heater 7 for heating;

[0061] c. Import the heated carbon dioxide from the heater 7 into the rectification tower 8, adjust the rectification pressure and temperature to 13-14Mpa, 46-49°C, and rectify to the e...

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Abstract

The invention provides a supercritical carbon dioxide extraction method and device for reducing acid value of extractive. The supercritical carbon dioxide extraction method includes steps of driving liquid carbon dioxide and materials in an extraction tank to extract for 4-6 hours under the pressure of 12-20 Mpa and temperature of 40-55 DEG C; heating carbon dioxide; rectifying under the pressure of 12-18 Mp and 40-55 DEG C; leading the carbon dioxide and light component essential oil to a separating tank to separate under the pressure of 4.5-7.5 Mpa and the temperature of 30-55 DEG C. The device comprises a carbon dioxide storage tank, a high-pressure reciprocating pump, a fluid material supplementing device, an extracting tank, a heater, a rectifying tower, and a separating tank; a carbon dioxide outlet of the carbon dioxide storage tank is connected with a carbon dioxide inlet of the extracting tank through the high-pressure reciprocating pump, and an extractive outlet of the extracting tank is connected with an extractive inlet of the heater; an extractive outlet of the heater is connected with the extractive inlet of the rectifying tower, an extractive outlet of the rectifying tower is connected with an extractive inlet of the separating tank, and a material outlet of the fluid material supplementing device is connected with a material inlet of the extracting tank. The supercritical carbon dioxide extraction method and the device have the advantage of improving output on the basis of effectively reducing acid value of the extractive.

Description

technical field [0001] The invention relates to a supercritical extraction method and device, in particular to a supercritical carbon dioxide extraction method and device for reducing the acid value of an extract. Background technique [0002] Acid value is a symbol of free fatty acid content in oil, especially in edible oils such as peanut oil, soybean oil and other products, it is an important indicator to measure the quality of crude oil and essential oil. Under the conditions of oil production, the acid value can be used as an indicator of the degree of hydrolysis, and under the conditions of its preservation, it can be used as an indicator of rancidity. The smaller the acid value, the better the oil quality, the better the freshness and refining degree. The acid value of the oil depends on the quality of the oil, the immaturity of the seeds, the damage of the seeds, etc., especially under the condition of high moisture, which is very unfavorable to the preservation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/022C11B9/025
Inventor 张永昌石洋王斌石书河于浩赵楠
Owner QINGDAO H EXTRACT CO LTD