CN104804867A - Physical deacidification deodorization method for vegetable oil - Google Patents
Physical deacidification deodorization method for vegetable oil Download PDFInfo
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- CN104804867A CN104804867A CN201510160429.1A CN201510160429A CN104804867A CN 104804867 A CN104804867 A CN 104804867A CN 201510160429 A CN201510160429 A CN 201510160429A CN 104804867 A CN104804867 A CN 104804867A
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- oil
- tower
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- deodoring
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/12—Refining fats or fatty oils by distillation
- C11B3/14—Refining fats or fatty oils by distillation with the use of indifferent gases or vapours, e.g. steam
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention relates to a physical deacidification deodorization method for vegetable oil. The method comprises the following steps: (1), conveying heated deeply-degummed oil into an air separator to remove air; (2), raising the temperature of the oil to 230-245 DEG C, enabling the oil to enter a first group of deacidification deodorization towers to remove odor and short carbon chain (such as 14-16 carbon chains) fatty acid in the oil; (3), after oil in the first group of deacidification deodorization towers is pumped out, raising the temperature to 245-255 DEG C, enabling the oil to enter a second group of deacidification deodorization towers to remove long carbon chain fatty acid in the oil, pumping oil out and cooling so as to obtain deodorized deacidified oil. According to the invention, volatilization of fatty acid molecules of different sizes in different towers is realized and the oil product stays in a high temperature state with a short time, so that the quality of the oil product is ensured. Meanwhile, oil films are more uniform in distribution and thinner since the special deacidification deodorization towers are adopted, and fatty acid volatilizes more quickly since the volatilization resistance of fatty acid is lower.
Description
Technical field:
The present invention relates to a vegetable oil physical deacidification deodour method.
Background technology:
Current vegetables oil deacid-deodoring ties up in the same tower within the scope of 230----270 degree and carries out, after causing small molecules lipid acid to deviate from, occupy deacid-deodoring tower space, macromole lipid acid is difficult to volatilization, and deacidification effect is poor, reduces the utilising efficiency of equipment, in order to reach deacidification effect, oil in tower, play circulation, make oil product at high operating temperatures the residence time long, have impact on the quality of oil product.In CN103409236A, disclose a kind of assembled deacid-deodoring tower being applicable to edible oil deodorization in oils industry, its formation is divided into four parts, specifically comprises the material filling type lipid acid trapping section, filler de-section, the eardrum deodorization section and be positioned at the deodorization of mammoth pump, the decolouring section of bottom in advance that seal successively and be fixed together from top to bottom.Its weak point is that oil film is thicker, and distribution is owed evenly, and the lipid acid gaseous volatilization resistance in packing tower in oil is large, the time is long, is unfavorable for that the lipid acid gas volatilized from oil is walked by belt on direct vapour; And lower vacuum degree is low, be unfavorable for lipid acid gas on carry and volatilize.
Summary of the invention:
The object of the invention is to for weak point existing in above-mentioned prior art and provide a kind of size fatty acid molecule can to volatilize in different tower, the oil product deacid-deodoring method that the residence time is short at high operating temperatures.
Another object of the present invention is to provide one uniform oil film distribution in deodorizing tower, thickness is thinner, the vegetables oil physical deacidification deodour method that lipid acid gaseous volatilization is fast, resistance is little.
Vegetables oil physical deacidification deodour method of the present invention, comprises the steps:
1, after degree of depth degummed oil being heated, be transported in air trap, remove air, to avoid dioxygen oxidation grease;
2, oil temperature is promoted to 230--245 DEG C, enters first group of deacid-deodoring tower, slough stink and short carbon chain lipid acid in oil, as 14 carbochain to ten six carbochains;
3, after being extracted out by the oil in first group of deacid-deodoring tower, temperature increase, to 250--255 DEG C, enters second group of deacid-deodoring tower, Long carbon chain lipid acid in sloughing in oil, more than 17 carbochains, then fuel-displaced and lower the temperature, and obtains deodorization depickling oil.
Two groups of above-mentioned deacid-deodoring tower structures can be identical, also can be different.Preferably use " a vegetable oil physical deacidification deodorizing tower " that the present inventor applies on the same day, namely on the existing deodorization extracting tower basis be made up of packing tower and tray-type column, packing tower is provided with shell and tube Overflow Tower, this tower is had the overflow port of symmetry or spiral way distribution tubulation by vacuum orifice, oil-in, thermal source import, thermal source outlet and upper end forms, its shell side heats, the descending oil film of tube side inwall.
Above-mentioned deacid-deodoring tower can depickling require to increase to three groups, and namely after second group of deacid-deodoring tower, oil product enters the 3rd group of deacid-deodoring tower, to remove Long carbon chain lipid acid through heating.
Instant invention overcomes the deficiencies in the prior art part, there is following advantage:
1, achieve size fatty acid molecule to volatilize in different tower, oil product because of residence time at high operating temperatures short, thus oil quality is guaranteed.
2, most preferred embodiment of the present invention is first by shell and tube Overflow Tower, oil fully can be formed oil film at tubulation inwall, lipid acid in the oil film that tube wall is descending is out volatile and taken away by steam, carrying out, being deviate from by the fatty acid molecule of most of short carbon chain there being shell side under the condition heated.Secondly, by corrugated-plate packed tower fully by up open steam uniformly distributing, and fully contact with descending oil.Now the fatty acid molecule of middle Long carbon chain is deviate from.Finally, fully stirred through the steam directly sprayed into by the oil in tray-type column, Long carbon chain free fatty acid molecules remaining in oil is taken away with up steam.Combined by the tower of three kinds of forms, make film distribution more even, thickness is thinner, and lipid acid volatilization resistance is less, volatilization is faster.
Accompanying drawing illustrates:
The special deacid-deodoring tower array mode schematic diagram that Fig. 1 utilizes for the present invention.
The structural representation of the special deacid-deodoring tower that Fig. 2 utilizes for the present invention.
Sequence number in Fig. 1: 1,4,7 is well heater, 2,5,8 is special deacid-deodoring tower, and 3,6,9 is pump, and 10 is cooler.
Sequence number in Fig. 2: 11, vacuum orifice, 12, shell and tube Overflow Tower, 33, ring flange, 14, overflow port, 15, oil-in, 16, thermal source import, 17, tubulation, 18, thermal source outlet, 19, corrugated-plate packed tower, 20, inlet pipe, 21, umbrella crown, 22, order inflators, 23, tray-type column, 24, mammoth pump, 25, oil sump, 26, oil outlet.
Embodiment:
Below in conjunction with good embodiment, the invention will be further described:
Embodiment one (sunflower seed oil) (using combined column of the present invention)
1, bleaching tower is entered after the raw material sunflower seed oil that just comes unstuck (acid value 2.54mgKOH/kg, color and luster are yellow 35 red 2.2 lovibond test meter 25.4mm grooves) being heated to 90 DEG C, fully mix with bleaching clay and activated carbon and be heated to 110 DEG C simultaneously, mix and filter out atlapulgite and activated carbon in 25 minutes, obtain the oil (color and luster is the yellow 20 red 1.5 lovibond test meter 133.4mm grooves of groove) that the degree of depth is come unstuck and decoloured.
2, bleached oil is entered deaerator, separate out oxygen contained in oil, and enter the extraction in about 45 minutes of No. 1 tubulation filler disc type combined column through being heated to 240 DEG C, enter No. 2 tubulation filler disc type combined column extract out after about 25 minutes through being heated to 255 DEG C, No. 3 tubulation filler disc type combined column are entered through being heated to 260 DEG C, extract out after about 15 minutes, deodorization depickling oil is obtained through cooling, its acid value 2.54mgKOH/kg is down to 0.10mgKOH/kg, color and luster is yellow 10 red 0.8 (lovibond test meter 133.4mm grooves), these two indexs are better than national standard (GB10464-2003), other indexs are up to state standards requirement, product is completely up to standard.
Embodiment two (safflower oil) (using combined column of the present invention)
1, bleaching tower is entered after the raw material sunflower seed oil that just comes unstuck (acid value 1.96mgKOH/kg, color and luster are yellow 35 red 2.8 lovibond test meter 25.4mm grooves) being heated to 90 DEG C, fully mix with bleaching clay and activated carbon and be heated to 110 DEG C simultaneously, mix and filter out atlapulgite and activated carbon in 25 minutes, obtain the oil (color and luster is the yellow 20 red 1.7 lovibond test meter 133.4mm grooves of groove) that the degree of depth is come unstuck and decoloured.
2, bleached oil is entered deaerator, separate out oxygen contained in oil, and enter the extraction in about 45 minutes of No. 1 tubulation filler disc type combined column through being heated to 240 DEG C, enter No. 2 tubulation filler disc type combined column extract out after about 25 minutes through being heated to 255 DEG C, enter No. 3 tubulation filler disc type combined column extract out after about 15 minutes through being heated to 260 DEG C, deodorization depickling oil is obtained through cooling, its acid value 1.96mgKOH/kg is down to 0.08mgKOH/kg, color and luster is yellow 10 red 0.8 (lovibond test meter 133.4mm grooves), these two indexs are better than national standard (GB/T22465-2008), other indexs are up to state standards requirement, product is completely up to standard.
Embodiment three (rapeseed oil) (using combined column of the present invention)
1, bleaching tower is entered after the raw material rapeseed oil that just comes unstuck (acid value 2.72mgKOH/kg, color and luster are yellow 35 red 4.1 lovibond test meter 25.4mm grooves) being heated to 90 DEG C, fully mix with bleaching clay and activated carbon and be heated to 110 DEG C simultaneously, mix and filter out atlapulgite and activated carbon in 25 minutes, obtain the oil (color and luster is the yellow 25 red 2.1 lovibond test meter 133.4mm grooves of groove) that the degree of depth is come unstuck and decoloured.
2, bleached oil is entered deaerator, separate out oxygen contained in oil, and enter the extraction in about 45 minutes of No. 1 tubulation filler disc type combined column through being heated to 240 DEG C, enter No. 2 tubulation filler disc type combined column extract out after about 25 minutes through being heated to 255 DEG C, enter No. 3 tubulation filler disc type combined column extract out after about 15 minutes through being heated to 260 DEG C, deodorization depickling oil is obtained through cooling, its acid value 2.72mgKOH/kg is down to 0.09mgKOH/kg, color and luster is yellow 10 red 1.0 (lovibond test meter 133.4mm grooves), these two indexs are better than national standard (GB1536-2004), other indexs are up to state standards requirement, product is completely up to standard.
Embodiment four (three grades of Oleum Gossypii semens) (using combined column of the present invention)
1, bleaching tower is entered after the raw material three grades of Oleum Gossypii semens that just come unstuck (acid value 0.87mgKOH/kg, color and luster are yellow 35 red 4.5 lovibond test meter 25.4mm grooves) being heated to 90 DEG C, fully mix with bleaching clay and activated carbon and be heated to 110 DEG C simultaneously, mix and filter out atlapulgite and activated carbon in 25 minutes, obtain the oil (color and luster is the yellow 35 red 2.7 lovibond test meter 133.4mm grooves of groove) that the degree of depth is come unstuck and decoloured.
2, bleached oil is entered deaerator, separate out oxygen contained in oil, and enter the extraction in about 45 minutes of No. 1 tubulation filler disc type combined column through being heated to 240 DEG C, enter No. 2 tubulation filler disc type combined column extract out after about 25 minutes through being heated to 255 DEG C, enter No. 3 tubulation filler disc type combined column extract out after about 15 minutes through being heated to 260 DEG C, deodorization depickling oil is obtained through cooling, its acid value 0.87mgKOH/kg is down to 0.07mgKOH/kg, color and luster is yellow 15 red 1.3 (lovibond test meter 133.4mm grooves), these two indexs are better than national standard (GB1537-2003), other indexs are up to state standards requirement, product is completely up to standard.
Embodiment five (sunflower seed oil) (using conventional combination tower)
1, bleaching tower is entered after the raw material sunflower seed oil that just comes unstuck (acid value 2.37mgKOH/kg, color and luster are yellow 35 red 2.4 lovibond test meter 25.4mm grooves) being heated to 90 DEG C, fully mix with bleaching clay and activated carbon and be heated to 110 DEG C simultaneously, mix and filter out atlapulgite and activated carbon in 25 minutes, obtain the oil (color and luster is the yellow 20 red 1.6 lovibond test meter 133.4mm grooves of groove) that the degree of depth is come unstuck and decoloured.
2, bleached oil is entered deaerator, separate out oxygen contained in oil, and enter the extraction in about 45 minutes of No. 1 tubulation filler disc type combined column through being heated to 240 DEG C, enter No. 2 tubulation filler disc type combined column extract out after about 25 minutes through being heated to 255 DEG C, No. 3 tubulation filler disc type combined column are entered through being heated to 260 DEG C, extract out after about 15 minutes, deodorization depickling oil is obtained through cooling, its acid value 2.37mgKOH/kg is down to 0.13mgKOH/kg, color and luster is yellow 10 red 0.9 (lovibond test meter 133.4mm grooves), these two indexs are better than national standard (GB10464-2003), other indexs are up to state standards requirement, product is completely up to standard.
Embodiment six (safflower oil) (using conventional combination tower)
1, bleaching tower is entered after the raw material sunflower seed oil that just comes unstuck (acid value 1.7mgKOH/kg, color and luster are yellow 35 red 2.6 lovibond test meter 25.4mm grooves) being heated to 90 DEG C, fully mix with bleaching clay and activated carbon and be heated to 110 DEG C simultaneously, mix and filter out atlapulgite and activated carbon in 25 minutes, obtain the oil (color and luster is the yellow 20 red 1.6 lovibond test meter 133.4mm grooves of groove) that the degree of depth is come unstuck and decoloured.
2, bleached oil is entered deaerator, separate out oxygen contained in oil, and enter the extraction in about 45 minutes of No. 1 tubulation filler disc type combined column through being heated to 240 DEG C, enter No. 2 tubulation filler disc type combined column extract out after about 25 minutes through being heated to 255 DEG C, enter No. 3 tubulation filler disc type combined column extract out after about 15 minutes through being heated to 260 DEG C, deodorization depickling oil is obtained through cooling, its acid value 1.7mgKOH/kg is down to 0.12mgKOH/kg, color and luster is yellow 10 red 0.9 (lovibond test meter 133.4mm grooves), these two indexs are better than national standard (GB/T22465-2008), other indexs are up to state standards requirement, product is completely up to standard.
Claims (3)
1. a vegetable oil physical deacidification deodour method, its feature comprises the following steps:
(1) be transported in air trap after degree of depth degummed oil being heated, remove air;
(2) oil temperature is promoted to 230--245 DEG C, enters first group of deacid-deodoring tower, slough stink and short carbon chain lipid acid in oil, as 14 carbochain to ten six carbochains;
(3) after being extracted out by the oil in first group of deacid-deodoring tower, temperature increase, to 245--255 DEG C, enters second group of deacid-deodoring tower, sloughs Long carbon chain lipid acid in oil, then fuel-displaced deodorization depickling oil of lowering the temperature to obtain.
2. a vegetable oil physical deacidification deodour method as claimed in claim 1, it is characterized in that above-mentioned deacid-deodoring tower structure is special, namely on the existing deodorization extracting tower basis be made up of packing tower and tray-type column, packing tower is provided with shell and tube Overflow Tower, this tower is had the overflow port of symmetry or spiral way distribution tubulation by vacuum orifice, oil-in, thermal source import, thermal source outlet and upper end forms, its shell side heats, the descending oil film of tube side inwall.
3. a vegetable oil physical deacidification deodour method as claimed in claim 1, to is characterized in that after second group of deacid-deodoring tower, through being heated to 255-265 DEG C, entering the 3rd group of deacid-deodoring tower, to remove Long carbon chain lipid acid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510160429.1A CN104804867A (en) | 2015-03-28 | 2015-03-28 | Physical deacidification deodorization method for vegetable oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510160429.1A CN104804867A (en) | 2015-03-28 | 2015-03-28 | Physical deacidification deodorization method for vegetable oil |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108203619A (en) * | 2016-12-19 | 2018-06-26 | 丰益(上海)生物技术研发中心有限公司 | A kind of sunflower oil for retaining more active nutrient components |
| CN108219924A (en) * | 2016-12-13 | 2018-06-29 | 王仙 | A kind of corn oil deacid-deodoring technique |
| WO2018145332A1 (en) * | 2017-02-07 | 2018-08-16 | 西双版纳华坤生物科技有限责任公司 | Method and device for physical deacidification and deodorization of high acid-value, thermally unstable oil |
| CN113122386A (en) * | 2019-12-30 | 2021-07-16 | 丰益(上海)生物技术研发中心有限公司 | Rice oil and preparation method thereof |
| CN113444571A (en) * | 2021-07-27 | 2021-09-28 | 山东西王食品有限公司 | Physical deacidification and deodorization system for vegetable oil |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108219924A (en) * | 2016-12-13 | 2018-06-29 | 王仙 | A kind of corn oil deacid-deodoring technique |
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| CN113122386A (en) * | 2019-12-30 | 2021-07-16 | 丰益(上海)生物技术研发中心有限公司 | Rice oil and preparation method thereof |
| CN113122386B (en) * | 2019-12-30 | 2023-11-24 | 丰益(上海)生物技术研发中心有限公司 | Rice oil and preparation method thereof |
| CN113444571A (en) * | 2021-07-27 | 2021-09-28 | 山东西王食品有限公司 | Physical deacidification and deodorization system for vegetable oil |
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