CN104611131A - Low-temperature refining method for pressed rapeseed oil - Google Patents
Low-temperature refining method for pressed rapeseed oil Download PDFInfo
- Publication number
- CN104611131A CN104611131A CN201510036082.XA CN201510036082A CN104611131A CN 104611131 A CN104611131 A CN 104611131A CN 201510036082 A CN201510036082 A CN 201510036082A CN 104611131 A CN104611131 A CN 104611131A
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- China
- Prior art keywords
- crude oil
- stirring
- oil
- add
- rapeseed
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Classifications
-
- 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
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- 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
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/06—Refining fats or fatty oils by chemical reaction with bases
Abstract
The invention discloses a low-temperature refining method for pressed rapeseed oil. The method sequentially comprises the steps of performing pre-filtration and deacidification, dephosphorizing, filtering and the like. The method is simple in process, low in energy consumption and low in loss, and fully retains inherent aromas and nutritive substances of the rapeseed oil.
Description
Technical field
The present invention relates to a kind of squeezing rapeseed oil processing method.
Background technology
The refining processing of level Four squeezing rapeseed oil is exactly the crude oil through pre-pressing is carried out refining processing, traditional refining processing adopts hydration degum (dephosphorization), alkali-refining deacidification, high temperature dehydration technology, namely the water of some amount or the electrolyte solution such as diluted acid, diluted alkaline are under agitation added in deep fat, remove the peptized impurities in oil, free fatty acids, superfluous water grade impurity, this operation is the main way of the outer oil and fat refining processing of Present Domestic; But use water and caustic soda in this technique, with grease close contact, in dephosphorization, depickling and high temperature dehydration process below, be easy to destroy or the intrinsic fragrance matter of loss rapeseed oil and some nutritive ingredient, complex process, energy consumption are high, loss is large.
Summary of the invention
The object of the present invention is to provide that a kind of technique is simple, energy consumption is low, loss is low, fully remain the squeezing rapeseed oil low-temperature refining method of the intrinsic fragrance of rapeseed oil and nutritive substance.
Technical solution of the present invention is:
A kind of squeezing rapeseed oil low-temperature refining method, is characterized in that: comprise the following steps: successively
(1) pre-flock
Squeezing crude oil first filters through 45 order leaf-type filters, dregginess is reduced to 0.5%-1%(mass percent);
(2) depickling, dephosphorization
If crude oil acid value is less than 1.0(KOH)/(mg/g), then in squeezing rapeseed oil crude oil, add the water being equivalent to quality of crude oil 0.2% ~ 0.4%, add while stirring, stirring velocity is 30 ~ 50r/min, after adding rear continuation stirring 1h, enters filtration process;
If crude oil acid value is greater than 1.0(KOH)/(mg/g), then in squeezing rapeseed oil crude oil, add the semi-saturation soda ash aqueous solution being equivalent to quality of crude oil 0.2% ~ 0.4%, add while stirring, stirring velocity is 30 ~ 50r/min, and after adding rear continuation stirring 1h, sampling detects, if acid value drops to 1.0(KOH)/(mg/g) below, enter filtration process, if acid value is still greater than 1.0(KOH)/(mg/g), repeat depickling, dephosphorization and be operated to acid value and drop to 1.0(KOH)/(mg/g) below;
(3) filter
In the qualified rear crude oil of depickling, add the rapeseed cake particle of crude oil weight 0.2% ~ 0.5%, add while stirring, stirring velocity is 30r/min, stirs after starting, opens cooling water valve, under crude oil temperature being dropped to 22 ~ 28 DEG C of temperature condition, stirs 40 ~ 60min; After stirring terminates, carry out filtering separation with flame filter press.
In step (2), the diameter of rapeseed cake particle used is between 2 ~ 5mm.
The present invention adds weakly alkaline salts solution in rapeseed oil crude oil, and on the one hand both in gentleness and rapeseed oil free fatty acid, centering oil and nutritive ingredient are destroyed less again.On the other hand, phosphatide in crude oil is fully dissolved in water, adopting vegetable seed to squeeze fuel-displaced rear formed dry rapeseed cake particle again puts in the mixture of crude rapeseed oil and buck, rapeseed cake particle can absorb the moisture in crude rapeseed oil rapidly, and phosphatide soluble in water is together adsorbed, again through filtering, while being separated with rapeseed oil by rapeseed cake particle, achieve depickling, dephosphorization, dehydration.
The present invention compared with prior art tool has the following advantages and effect:
(1) method of refining of the present invention, carries out all at normal temperatures, does not consume steam, greatly reduce energy consumption.Eliminate high temperature deodorization (dehydration) technique, avoid the destruction to fragrance matter in rapeseed oil.
(2) the inventive method, adopt weakly alkaline salt to replace strong basicity caustic soda, reduce the intrinsic fragrance in rapeseed oil and the nutritious destruction of spy, the loss of neutral oil reduces greatly, and refining yield improves.
(3) the inventive method, compared with the prior art, technique is simple, processing ease.
Below in conjunction with embodiment, the invention will be further described.
Embodiment
Embodiment 1:
Take the crude rapeseed oil 1000kg of squeezing, detection acid value is 0.8(KOH)/(mg/g), crude oil first filters through 45 order leaf-type filters, dregginess is reduced to 0.5%-1%(mass percent), then crude oil is added 2.0kg soft water while stirring, 40r/min is kept to stir 1h, phosphatide in crude oil is fully dissolved in water, then the rapeseed cake particle of 1.5kg particle diameter at 2 ~ 5mm is added, add while stirring, stirring velocity is 30r/min, after stirring starts, open cooling water valve, keep crude oil temperature at 28 DEG C, stir 50min, rapeseed cake particle can absorb the moisture in crude rapeseed oil fully, finally rapeseed oil and rapeseed cake particle are sent into flame filter press to filter, realize rapeseed oil and rapeseed cake particle, the magazins' layout such as phosphatide, clarified, transparent, the rapeseed oil of giving off a strong fragrance.
Embodiment 2:
Take the rapeseed oil 1000kg of squeezing, detection acid value is 1.4(KOH)/(mg/g), crude oil first filters through 45 order leaf-type filters, dregginess is reduced to 0.5%-1%(mass percent), then crude oil is added while stirring the 2.0kg semi-saturation soda ash aqueous solution, 30r/min is kept to stir 1h, phosphatide in crude oil is fully dissolved in water, rapeseed oil Free Fat acid moieties and soda ash neutralize, it is 0.8(KOH that sampling detects crude oil acid value)/(mg/g), then the rapeseed cake particle of 2.0kg particle diameter at about 2-5mm is added, add while stirring, stirring velocity is 30r/min, after stirring starts, open cooling water valve, keep crude oil temperature at 28 DEG C, stir 55min, rapeseed cake particle can absorb the moisture in crude rapeseed oil fully, finally rapeseed oil and rapeseed cake particle are sent into flame filter press to filter, realize rapeseed oil and rapeseed cake particle, the magazins' layout such as phosphatide, clarified, transparent, the rapeseed oil of giving off a strong fragrance.
Example 3:
Take the rapeseed oil 1000kg of squeezing, detection acid value is 2.4(KOH)/(mg/g), crude oil first filters through 45 order leaf-type filters, dregginess is reduced to 0.5%-1%(mass percent), then crude oil is added while stirring the 2.5kg semi-saturation soda ash aqueous solution, 50r/min is kept to stir 1h, phosphatide in crude oil is fully dissolved in water, rapeseed oil Free Fat acid moieties and soda ash neutralize, it is 1.4(KOH that sampling detects crude oil acid value)/(mg/g), add the 2.0kg semi-saturation soda ash aqueous solution while stirring, 30r/min is kept to stir 1h, rapeseed oil Free Fat acid moieties and soda ash are neutralized, it is 0.8(KOH that sampling detects crude oil acid value)/(mg/g), then the rapeseed cake cake particle of 1.8kg particle diameter at about 2 ~ 5mm is added, add while stirring, stirring velocity is 30r/min, after stirring starts, open cooling water valve, keep crude oil temperature at 28 DEG C, stir 60min, rapeseed cake particle can absorb the moisture in crude rapeseed oil fully, finally rapeseed oil and rapeseed cake particle are sent into flame filter press to filter, realize rapeseed oil and rapeseed cake particle, the magazins' layout such as phosphatide, clarified, transparent, the rapeseed oil of giving off a strong fragrance.
Claims (2)
1. squeeze a rapeseed oil low-temperature refining method, it is characterized in that: comprise the following steps: successively
(1) pre-flock
Squeezing crude oil first filters through 45 order leaf-type filters, and dregginess is reduced to 0.5%-1%;
(2) depickling, dephosphorization
If crude oil acid value is less than 1.0(KOH)/(mg/g), then in squeezing rapeseed oil crude oil, add water 0.2% ~ 0.4%, add while stirring, stirring velocity is 30 ~ 50r/min, after adding rear continuation stirring 1h, enters filtration process;
If crude oil acid value is greater than 1.0(KOH)/(mg/g), then in squeezing rapeseed oil crude oil, add the semi-saturation soda ash aqueous solution 0.2% ~ 0.4%, add while stirring, stirring velocity is 30 ~ 50r/min, and after adding rear continuation stirring 1h, sampling detects, if acid value drops to 1.0(KOH)/(mg/g) below, enter filtration process, if acid value is still greater than 1.0(KOH)/(mg/g), repeat depickling, dephosphorization and be operated to acid value and drop to 1.0(KOH)/(mg/g) below;
(3) filter
In the qualified rear crude oil of depickling, add the rapeseed cake particle of crude oil weight 0.2% ~ 0.5%, add while stirring, stirring velocity is 30r/min, stirs after starting, opens cooling water valve, under crude oil temperature being dropped to 22 ~ 28 DEG C of temperature condition, stirs 40 ~ 60min; After stirring terminates, carry out filtering separation with flame filter press.
2. squeezing rapeseed oil low-temperature refining method according to claim 1, it is characterized in that: in step (2), the diameter of rapeseed cake particle used is between 2 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036082.XA CN104611131A (en) | 2015-01-26 | 2015-01-26 | Low-temperature refining method for pressed rapeseed oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510036082.XA CN104611131A (en) | 2015-01-26 | 2015-01-26 | Low-temperature refining method for pressed rapeseed oil |
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| CN104611131A true CN104611131A (en) | 2015-05-13 |
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| CN201510036082.XA Pending CN104611131A (en) | 2015-01-26 | 2015-01-26 | Low-temperature refining method for pressed rapeseed oil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893813A (en) * | 2015-06-30 | 2015-09-09 | 武汉轻工大学 | Rapeseed oil processing method |
| CN106333983A (en) * | 2016-08-22 | 2017-01-18 | 金勇� | Anti-inflammatory painkiller for treating wound and preparation method thereof |
| CN107779252A (en) * | 2016-08-29 | 2018-03-09 | 湖南鸿丰油业有限责任公司 | High-quality environmentally friendly refined rapeseed oil method and its high-quality purifier of rapeseed oil used |
| CN111876240A (en) * | 2020-08-15 | 2020-11-03 | 金健植物油有限公司 | Method and equipment for improving production efficiency of aromatic rapeseed oil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732378A (en) * | 2012-05-18 | 2012-10-17 | 冀中能源邢台矿业集团有限责任公司油脂分公司 | Low temperature refining method for pressed peanut oil |
-
2015
- 2015-01-26 CN CN201510036082.XA patent/CN104611131A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732378A (en) * | 2012-05-18 | 2012-10-17 | 冀中能源邢台矿业集团有限责任公司油脂分公司 | Low temperature refining method for pressed peanut oil |
Non-Patent Citations (1)
| Title |
|---|
| 张孔海: "《食品加工技术》", 28 February 2014 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893813A (en) * | 2015-06-30 | 2015-09-09 | 武汉轻工大学 | Rapeseed oil processing method |
| CN104893813B (en) * | 2015-06-30 | 2018-05-04 | 武汉轻工大学 | A kind of processing method of rapeseed oil |
| CN106333983A (en) * | 2016-08-22 | 2017-01-18 | 金勇� | Anti-inflammatory painkiller for treating wound and preparation method thereof |
| CN107779252A (en) * | 2016-08-29 | 2018-03-09 | 湖南鸿丰油业有限责任公司 | High-quality environmentally friendly refined rapeseed oil method and its high-quality purifier of rapeseed oil used |
| CN111876240A (en) * | 2020-08-15 | 2020-11-03 | 金健植物油有限公司 | Method and equipment for improving production efficiency of aromatic rapeseed oil |
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Application publication date: 20150513 |