CN104830526A - De-waxing method of rice bran oil - Google Patents
De-waxing method of rice bran oil Download PDFInfo
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- CN104830526A CN104830526A CN201510231424.3A CN201510231424A CN104830526A CN 104830526 A CN104830526 A CN 104830526A CN 201510231424 A CN201510231424 A CN 201510231424A CN 104830526 A CN104830526 A CN 104830526A
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Abstract
The invention relates to a de-waxing method of rice bran oil. The method comprises the following steps: adding deodorized rice bran oil into a seed tank filled with nitrogen gas and a vacuum crystallization tank, adding a certain amount of filter aid into the seed tank, stirring; transferring the mixed oil to a No.1 crystallization tank with a negative pressure, conveying the crystallized rice bran oil to a maturing tank, which has been vacuumized in advance; after maturing, transferring the rice bran oil to a temporary storage tank, then pumping the rice bran oil into a pre-coating tank, pre-coating the rice bran oil, and filtering so as to obtain the finished oil. The provided method is used to de-wax rice bran oil; the whole process from the crystallization tank to the finished product is completely enclosed so as to prevent the contact between grease and air, and thus the grease oxidation is avoided. The cooling water is introduced into the system after the whole crystallization tank is filled with grease, thus the water content in oil is reduced, and the freezing tests last for a longer time, compared with the national standards.
Description
Technical field
The invention belongs to grease processing technology field, be specifically related to a kind of process for dewaxing of Rice pollard oil.
Background technology
Rice pollard oil has very high nutritive value, and in developed countries such as American-European Korean and Japaneses, it is a kind of health-nutrition equally celebrated for their achievements with sweet oil oil, deeply likes by hyperlipidemia, cardio-cerebrovascular disorder crowd, and becomes the routine health edible oil of west family already.
Up to now, Dewaxing of Rice Bran technique is mainly winterization and filters wax fractionation process, if application number is 201310527111.3, denomination of invention is a kind of method of Dewaxing of Rice Bran, disclose in this invention and carry out flash distillation by passing in knockout tower without the Rice pollard oil dewaxed, most of rice bran wax is steamed and is stored in wax storage; Then Rice pollard oil is passed into dewaxing groove and carry out winterization filtration dewaxing.Winterization is one of method of a kind of partial crystallization separation, is process grease being cooled the crystallizations such as the glyceryl ester making zero pour higher.Grease through coming unstuck, depickling, decolouring, after deodorization, it is that flocks is separated out that winterization also has a small amount of solid fat, affects outward appearance.Winterization is that grease is slowly stirred, and controlled cooling model speed is cooled to 4 ~ 6 DEG C, about 24h, makes solid fat generate larger crystallization, divides and isolate.Again through filtering, oil is separated with solid fat.Because Rice pollard oil is more containing wax, winterization filters wax fractionation process dewaxing, and the winterization time is long, and filter plant is very easy to blocking, and cleaning comparatively bothers, and is not suitable with scale operation and operation.
China's Rice pollard oil raw material resources are enriched, but the production and consumption of Rice pollard oil is also in the starting stage, and annual production is less than 120,000 tons.To accelerate Rice pollard oil development be people to health-nutrition oil in the urgent need to.
Summary of the invention
For the problems referred to above, the invention provides a kind of process for dewaxing of Rice pollard oil, be specially a kind of omnidistance airtight fresh-keeping, the process for dewaxing of the Rice pollard oil that freezing test is good.It is as follows that freezing test of the present invention is longer than national Specification (national Specification is 5.5 hours) technical scheme of the present invention:
A process for dewaxing for Rice pollard oil, concrete steps are:
Rice pollard oil after deodorization squeezes into the seeding tank being full of nitrogen in advance and the crystallizer vacuumized, and adds flocculating aids and stir in seeding tank.Mixing oil after stirring enters crystallizer, refer to that namely negative pressure No. 1 crystallizer have employed the crystallizer vacuumizing negative pressure, Rice pollard oil after crystallization enters the maturator vacuumized in advance, enters temporary storage tank after growing the grain is complete, squeezes into precoating tank precoat filtration again obtain processed oil by temporary storage tank.
In above-mentioned seeding tank, the addition of flocculating aids is 12 ‰ ~ 16 ‰ of deodorization rice bran oil mass, and mix and blend squeezes into crystallizer in 3 ~ 5 minutes fast; Preferably, the addition of flocculating aids is 14 ‰, and mix and blend squeezes into crystallizer in 4 minutes fast.
Above-mentioned negative pressure No. 1 crystallizer vacuumizes in advance, negative pressure pressure is-0.02 ~-0.005pa, be full of after whole crystallizer until oil and pass into chilled water (chilled water refers to water of condensation and ethylene glycol mixture), stirring velocity is 60 ~ 70 revs/min, and after crystallization, oil temperature is cooled to 10 ~ 15 DEG C; Preferably, negative pressure pressure is-0.01pa, and be full of after whole crystallizer until oil and pass into chilled water, stirring velocity is 65 revs/min, and oil temperature is cooled to 12 DEG C.
In the method for above-mentioned Dewaxing of Rice Bran, maturator is 2, vacuumizes all in advance, makes negative pressure pressure be-0.01pa, is full of after whole maturator passes into chilled water until oil, and stir speed 65 revs/min, after growing the grain, oil temperature is cooled to 5 ~ 7 DEG C.
The method of above-mentioned Dewaxing of Rice Bran, the oil spill in crystallizer flow to maturator, and crystallization and rearing crystal time are 24 hours.
The method of the dewaxing of above-mentioned Rice pollard oil, the Rice pollard oil after growing the grain blows over filter screen with nitrogen, starvation before squeezing into precoating tank again by temporary storage tank.
The present invention compared with prior art has the following advantages:
The present invention dewaxes to Rice pollard oil, omnidistance adopt inflated with nitrogen and negative pressure fresh-keeping, fresh keeping time is long; Passing into chilled water after filling oil in negative pressure No. 1 crystallizer, avoid first logical chilled water again oil-feed time meet thermogenetic water and be mixed in oil, Moisture high UCL; Before squeezing into precoating tank, precoating tank first fills net with nitrogen, starvation, prevents oily color reversion.
Embodiment
Further describe the present invention below in conjunction with specific embodiment, advantage and disadvantage of the present invention will be more clear along with description.But embodiment is only exemplary, does not form any restriction to scope of the present invention.It will be understood by those skilled in the art that and can modify to the details of technical solution of the present invention and form or replace down without departing from the spirit and scope of the present invention, but these amendments and replacement all fall within the scope of protection of the present invention.
The process for dewaxing of embodiment 1 one kinds of Rice pollard oils, concrete steps are:
Rice pollard oil after deodorization squeezes into the seeding tank being full of nitrogen in advance and the crystallizer vacuumized, and the flocculating aids adding relative proportion in seeding tank stirs.Mixing oil after stirring enters negative pressure No. 1 crystallizer, and the Rice pollard oil after crystallization enters the maturator vacuumized in advance, enters temporary storage tank after growing the grain is complete, squeezes into precoating tank precoat filtration again obtain processed oil by temporary storage tank.
In above-mentioned seeding tank, the addition of flocculating aids is 12 ‰ of deodorization rice bran oil mass, and mix and blend squeezes into crystallizer in 3 minutes fast;
Above-mentioned negative pressure No. 1 crystallizer vacuumizes in advance, and negative pressure pressure is-0.01pa, and be full of after whole crystallizer until oil and pass into chilled water, stirring velocity is 65 revs/min, and oil temperature is cooled to 10 DEG C.
The method of described Dewaxing of Rice Bran, maturator is 2, vacuumizes all in advance, makes negative pressure pressure be-0.01pa, and be full of after whole maturator until oil and pass into chilled water, stirring velocity 65 revs/min, after growing the grain, oil temperature is cooled to 5 ~ 7 DEG C.
The method of above-mentioned Dewaxing of Rice Bran, the oil spill in crystallizer flow to maturator, and crystallization rearing crystal time is 24 hours, freezing test 24 hours.
The method of the dewaxing of above-mentioned Rice pollard oil, the Rice pollard oil after growing the grain blows over filter screen with nitrogen, starvation before squeezing into precoating tank again by temporary storage tank.
Embodiment 2
A process for dewaxing for Rice pollard oil, concrete steps are:
Rice pollard oil after deodorization squeezes into the seeding tank being full of nitrogen in advance and the crystallizer vacuumized, and the flocculating aids adding relative proportion in seeding tank stirs.Mixing oil after stirring enters negative pressure No. 1 crystallizer, and the Rice pollard oil after crystallization enters the maturator vacuumized in advance, enters temporary storage tank after growing the grain is complete, squeezes into precoating tank precoat filtration again obtain processed oil by temporary storage tank.
In above-mentioned seeding tank, the addition of flocculating aids is 15 ‰ of deodorization rice bran oil mass, and mix and blend squeezes into crystallizer in 3.5 minutes fast;
Above-mentioned negative pressure No. 1 crystallizer vacuumizes in advance, and negative pressure pressure is-0.015pa, and be full of after whole crystallizer until oil and pass into chilled water, stirring velocity is 63 revs/min, and oil temperature is cooled to 13 DEG C;
The method of described Dewaxing of Rice Bran, maturator is 2, vacuumizes all in advance, makes negative pressure pressure be-0.01pa, and be full of after whole maturator until oil and pass into chilled water, stirring velocity 65 revs/min, after growing the grain, oil temperature is cooled to 5 ~ 7 DEG C.
The method of above-mentioned Dewaxing of Rice Bran, the oil spill in crystallizer flow to maturator, and crystallization rearing crystal time is 24 hours, freezing test 32 hours.
The method of the dewaxing of above-mentioned Rice pollard oil, the Rice pollard oil after growing the grain blows over filter screen with nitrogen, starvation before squeezing into precoating tank again by temporary storage tank.
Embodiment 3
A process for dewaxing for Rice pollard oil, concrete steps are:
Rice pollard oil after deodorization squeezes into the seeding tank being full of nitrogen in advance and the crystallizer vacuumized, and the flocculating aids adding relative proportion in seeding tank stirs.Mixing oil after stirring enters negative pressure No. 1 crystallizer, and the Rice pollard oil after crystallization enters the maturator vacuumized in advance, enters temporary storage tank after growing the grain is complete, squeezes into precoating tank precoat filtration again obtain processed oil by temporary storage tank.
In above-mentioned seeding tank, the addition of flocculating aids is 16 ‰ of deodorization rice bran oil mass, and mix and blend squeezes into crystallizer in 5 minutes fast;
Above-mentioned negative pressure No. 1 crystallizer vacuumizes in advance, and negative pressure pressure is-0.008pa, and be full of after whole crystallizer until oil and pass into chilled water, stirring velocity is 68 revs/min, and oil temperature is cooled to 15 DEG C;
The method of described Dewaxing of Rice Bran, maturator is 2, vacuumizes all in advance, makes negative pressure pressure be-0.01pa, and be full of after whole maturator until oil and pass into chilled water, stirring velocity 65 revs/min, after growing the grain, oil temperature is cooled to 5 ~ 7 DEG C.
The method of above-mentioned Dewaxing of Rice Bran, the oil spill in crystallizer flow to maturator, and crystallization rearing crystal time is 24 hours, freezing test 28 hours.
The method of the dewaxing of above-mentioned Rice pollard oil, the Rice pollard oil after growing the grain blows over filter screen with nitrogen, starvation before squeezing into precoating tank again by temporary storage tank.
Claims (8)
1. a process for dewaxing for Rice pollard oil, is characterized in that, the concrete steps of described process for dewaxing are:
Rice pollard oil after deodorization squeezes into the seeding tank being full of nitrogen in advance and the crystallizer vacuumized, the flocculating aids adding relative proportion in seeding tank stirs, mixing oil after stirring enters crystallizer, Rice pollard oil after crystallization enters the maturator vacuumized in advance, enter temporary storage tank after growing the grain is complete, squeeze into precoating tank precoat filtration again by temporary storage tank and obtain processed oil.
2. process for dewaxing according to claim 1, is characterized in that, in described seeding tank, the addition of flocculating aids is 12 ‰ ~ 16 ‰ of deodorization rice bran oil mass, and mix and blend squeezes into crystallizer in 3 ~ 5 minutes fast.
3. process for dewaxing according to claim 2, is characterized in that, the addition of flocculating aids is 14 ‰, and mix and blend squeezes into crystallizer in 4 minutes fast.
4. process for dewaxing according to claim 1, is characterized in that, described crystallizer vacuumizes in advance, negative pressure pressure is-0.02 ~-0.005pa, be full of after whole crystallizer until oil and pass into chilled water, stirring velocity is 60 ~ 70 revs/min, and after crystallization, oil temperature is cooled to 10 ~ 15 DEG C.
5. process for dewaxing according to claim 4, is characterized in that, described crystallizer negative pressure pressure is-0.01pa, and be full of after whole crystallizer until oil and pass into chilled water, stirring velocity is 65 revs/min, and after crystallization, oil temperature is cooled to 12 DEG C.
6. process for dewaxing according to claim 1, is characterized in that, described maturator is 2, vacuumize all in advance, make negative pressure pressure be-0.01pa, be full of after whole maturator until oil and pass into chilled water, stirring velocity 65 revs/min, after growing the grain, oil temperature is cooled to 5 ~ 7 DEG C.
7. process for dewaxing according to claim 1, is characterized in that, the oil spill in described crystallizer flow to maturator, and crystallization rearing crystal time is 24 hours.
8. process for dewaxing according to claim 1, is characterized in that, the Rice pollard oil after growing the grain blows over filter screen with nitrogen before squeezing into precoating tank again by temporary storage tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746746A (en) * | 2017-10-17 | 2018-03-02 | 山东西王食品有限公司 | A kind of continuous crystallisation, growing the grain, the method and apparatus of dewaxing refining raising Vegetable Oil Quality |
| CN109161438A (en) * | 2018-08-27 | 2019-01-08 | 山东三星玉米产业科技有限公司 | A kind of rice bran oil refining method |
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| CN102224854A (en) * | 2011-04-19 | 2011-10-26 | 甘肃创兴生物工程有限责任公司 | Method for producing flaxseed oil under nitrogen protection |
| CN104403791A (en) * | 2014-12-18 | 2015-03-11 | 宁夏伊斯兰仁存药膳食品有限公司 | Vegetable oil fresh-keeping and cold-pressing process |
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2015
- 2015-05-08 CN CN201510231424.3A patent/CN104830526B/en active Active
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| CN102224854A (en) * | 2011-04-19 | 2011-10-26 | 甘肃创兴生物工程有限责任公司 | Method for producing flaxseed oil under nitrogen protection |
| CN104403791A (en) * | 2014-12-18 | 2015-03-11 | 宁夏伊斯兰仁存药膳食品有限公司 | Vegetable oil fresh-keeping and cold-pressing process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746746A (en) * | 2017-10-17 | 2018-03-02 | 山东西王食品有限公司 | A kind of continuous crystallisation, growing the grain, the method and apparatus of dewaxing refining raising Vegetable Oil Quality |
| CN107746746B (en) * | 2017-10-17 | 2021-01-19 | 山东西王食品有限公司 | Method and equipment for improving vegetable oil quality through continuous crystallization, crystal growing and dewaxing refining |
| CN109161438A (en) * | 2018-08-27 | 2019-01-08 | 山东三星玉米产业科技有限公司 | A kind of rice bran oil refining method |
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