CN87100081A - The method of edible corn oil extraction from alcohol fermented beer - Google Patents

Abstract

A kind of method that belongs to the edible corn oil extraction of field of food: in the smart process that brews alcoholic beverages with corn, will float over the raw corn oil on alcohol fermented beer top, form by getting operation refinings such as oil, precipitation, alkali refining washing, deodorization, dehydration, Hui Liang, filtration.This method is saved facility investment, is produced effects soon, and the Semen Maydis oil that obtains meets edible oil standard fully.This law can be widely used in corn and brew alcoholic beverages in the smart factory.

Description

The method of edible corn oil extraction from alcohol fermented beer

The present invention relates to make wine, refer more particularly to the recovery of paying product.

Contain linolic acid and abundant vitamin A, D, E in the Semen Maydis oil, the mankind are had vessel softening, strengthen resistance against diseases and effect such as delay senility.At present, the main method of producing Semen Maydis oil both at home and abroad has two kinds of milling process and extraction processs, these two kinds of method equipment useds are various, complex process, so cost is higher.

With corn being raw material when making alcohol, at fermentation stage, have a large amount of raw corn oils to swim in to send out wine with dregs above.For a long time, the raw corn oil that these are valuable has only to be used to make soap on a small quantity, and major part is taken as waste discharge, has wasted resource and has polluted environment again.

The present invention's purpose is from refining out edible corn oil in the by product-raw corn oil the corn manufacturing alcohol, to enlarge the corn oil sources and also reduce environmental pollution.

The present invention is that (or operation) obtains edible corn oil through the following steps: vacuum is got raw corn oil → precipitate and separate → alkali refining deacidification → washing and is removed alkali → vacuum evapn deodorization → heating under vacuum dehydration → Hui Liang → filter at low temperature.Fig. 1 is a process flow sheet.Wherein, thick box indicating technical process of the present invention, the thin box indicating smart technical process that brews alcoholic beverages; Fig. 2 is an equipment flowsheet sketch of the present invention, and (for adapting to drawing breadth, Fig. 2 separated into two parts is drawn, Fig. 2 A is the forebody operation, and Fig. 2 B is latter half of operation.）

Corn enters fermentation stage (30 ℃) after pulverizing, boiling, saccharification, form karusen in fermentor tank (23), and raw corn oil wherein floats to top.These raw corn oil acid value height, impurity is many, peculiar smell is arranged.The refining step is as follows:

One, vacuum is got Semen Maydis oil: drive vacuum pump (16) and cause and get the interior negative pressure of oil tank (1), it is 300～500 mmhg that vacuum tightness requires, so the crude oil in the fermentor tank (23) is inhaled into to be got in the oil tank.Close vacuum pump (16) after getting oil.

Two, precipitate and separate: stop vacuum pump (16), the oil that utilizes pressure reduction will get in the oil tank is pressed in branch oil tank (2) and the crude oil jar (3) successively, make its natural sedimentation after 7～8 hours, can open valve (20), (21) (22) enter the wine with dregs pond with impurity, moisture content, being retained in the crude oil jar is limpider raw corn oil.

Three, alkali refining deacidification: after the oil in the crude oil jar being carried out physical and chemical index such as acid value, become sour, contain arsenic and flavacin check, its suction alkali refining is washed in the pot (8) with pump (4).So-called alkali refining promptly is with the free fatty acids react with in alkali and the raw corn oil, with reach depickling, take off impurity, the comprehensive purpose of decolouring:

Solid alkali turns to alkaline solution and squeezes in the alkali-prepared tank (7) standby in choline pond (6).Concentration of lye is decided according to the acid value of raw corn oil.Experience draws, and acid value per ton is 1 raw corn oil, and required dried ground caustic is 0.713 kilogram.Be converted to the alkali lye of 16 degree Beaume, then alkali lye heavily is (0.713 ÷ 11.06) * 100=6.45 kilogram.Acid value per ton is the raw corn oil of A, needs 16 degree Beaume alkali lye, heavily is the 6.45A kilogram.For making deacidification fully, also need add the excess alkali quantity about 0.1% in addition.

The alkali refining deacidification is in proper order:

1, the standard width of a room in an old-style house connects vapour, makes an oily temperature rise to 35 in the alkali refining washing pot～40 ℃;

2, add alkali lye, continue to heat up, stir on intensification limit, limit;

Open hot-water cylinder (18) when 3, temperature reaches 60 ℃, wherein boiled water is injected alkali refining washing pot, and (each hundred kilograms of oil adds 7～8 kilograms of boiled water) is so that short its precipitation of the cohesion of the soap stock (greasy filth) after the neutralization.Look sedimentation speed and bonding situation, decision stops to stir constantly.

4, stop to stir after, continued precipitation 2 hours;

5, get rid of soap stock;

6, close indirect vapour.

Four, washing removes alkali: after alkali refining deacidification operation finishes, small-amount free is still arranged from alkali in the alkali refining washing pot oil, should remove.Order is:

1, the standard width of a room in an old-style house connects vapour, makes oily temperature rise to 80 ℃, stops vapour, stirs, and the boiled water that hot-water cylinder (18) is discharged is injected alkali refining washing pot (each hundred kilograms of oil adds 5～6 kilograms of boiled water);

2, stir the parking in a moment, precipitate 40～60 minutes, get rid of buck;

3, so (by 1,2 orders in above-mentioned the 4th operation) carry out 4～5 times, exist up to no free alkali.

Five, vacuum evapn deodorization:

1, drives vacuum pump (16), the raw corn oil after the washing is sucked vacuum tank (9);

2, stir a moment;

3, close vacuum pump (16), the standard width of a room in an old-style house connects vapour and makes oily temperature rise to 130 ℃;

4, open vacuum pump (16), the boiling of reducing pressure once more; When vacuum tightness reached 700～740 mmhg after 5 minutes, open direct vapour and make oily temperature rise to 150 ℃, so continue 3～4 hours;

5, stop direct vapour, do not stop indirect vapour; Keep the oil temperature between 140～150 ℃, vacuum tightness is between 700～740 mmhg.

Six, heating under vacuum dehydration:

1, continue 30 minutes by above-mentioned the 5th operation the 5th order, the water vapour that is retained in the vacuum tank (9) can enter in the condenser (13) by mist eliminator (10).

2, condenser (13) adopts the measure that feeds water coolant (W), and the most of moisture content in the water vapour is separated, and enters pond (15) from condenser; Small portion moisture content follows gas to enter water trap (14), is separated by water trap (14) once more, enters the pond; Gas is entered in the atmosphere by vacuum pump (16).

Seven, Hui Liang: open the indirect cooling water door, make oil in vacuum tank (9) about Hui Liang to 30 ℃.Close the indirect cooling water door then.

Eight, low temperature Hui Liang: start oil filter (11), leach well cuts in the time of oily warm 25～30 ℃, promptly obtain the edible corn oil finished product, a part is squeezed into oil basin (12), and a part is squeezed into finished product jar (17).

The reply finished product carries out physical and chemical inspection.

Than old technology, the present invention can bring following positively effect;

1, meet under the national food hygienic standard situation at finished product, reduced by 70～80% facility investments, product cost descends significantly, and it is fast to produce effects;

2, reduced environmental pollution, turned waste into wealth, for society has increased wealth;

3, the present invention be applicable to useful corn brew alcoholic beverages in the smart factory.

Embodiment is through 36 batches of small-scale tests, and processing method of the present invention is mature on the whole, and on this basis, has carried out three expanding tests, to vacuum tightness, and the initial oil temperature during alkali refining, deodorization time length and condenser absolute altitude have been done improvement, and the result is as follows:

Embodiment 1(expanding test for the first time): take out 500 kilograms of crude oils, the chemical examination acid value is 16.5, flavacin content 0, and arsenic content 0 becomes sour less than 20; Alkaline solution (16 degree Beaume) heavily is ((6.45 * 16.5)+(0.1 ÷ 100) * (6.45 * 16.5)) ÷ 2=53.27 kilogram.Selected processing parameter is:

Vacuum tightness 600～680 mmhg (negative pressure) in the vacuum tank

Initial oil temperature is 20 ℃ during alkali refining

2～3 hours deodorization time length

Condenser absolute altitude+10.5 meter

Step refining in accordance with regulations, as follows to the finished product chemical examination that obtains:

Acid value 1.93 peroxide values 0.042%

Moisture content 0.19% impurity 0.05%

The negative heat test of becoming sour has peculiar smell slightly

Conclusion: except that having slightly the peculiar smell, other meet the secondary oil standard of edible vegetable oil GB GB2716-81 regulation.

Embodiment 2(expanding test for the second time): take out 2500 kilograms of crude oils, the chemical examination acid value is 16.5, flavacin content 0, and arsenic content 0 becomes sour less than 20; Requiring alkaline solution heavily is 53.27 * 5=266.4 kilogram (16 degree Beaume), and selected processing parameter is:

Vacuum tightness 690 mmhg (negative pressure) in the vacuum tank

Initial temperature is 35～38 ℃ during alkali refining

2～3 hours deodorization time length

Condenser absolute altitude+10.5 meter

The finished product result of laboratory test is as follows:

Acid value 1.86, peroxide value 0.15%

Moisture content 0.06%, impurity 0.05%

The feminine gender of becoming sour,

Heat test, peculiar smell is than greatly alleviating among the embodiment 1.

Conclusion: have the peculiar smell except that little, other meet the secondary oil standard of edible vegetable oil GB GB2716-81 regulation.

Embodiment 3(expanding test for the third time): take out 2500 kilograms of crude oils, chemically examine its acid value 17.98, flavacin content 0, arsenic content 0 becomes sour less than 20; Require alkaline solution heavily to be:

((6.45 * 17.98)+(0.1 ÷ 100) * (6.45 * 17.98)) * 2.5=290 kilogram

(ripple 6 degree Beaume), selected processing parameter is:

Vacuum tightness 700～740 mmhg (negative pressure) in the vacuum tank

Initial oil temperature is 38～40 ℃ during alkali refining

3～4 hours deodorization time length

Condenser absolute altitude+12 meter

The finished product result of laboratory test is as follows:

The result of laboratory test of grease storage refinery, Tianjin is

Acid value 0.65, free fatty acids 0.33%,

Impurity 0.03%, moisture content 0.04%,

Peroxide value 0.07%, AFT does not detect,

The feminine gender of becoming sour, the smell flavour is normal, free from extraneous odour.

The result of laboratory test of Tianjin health and epidemic prevention station is

Acid value 0.36, peroxide value 0.13%,

Arsenic does not detect, and smell, flavour are normal, free from extraneous odour.

Conclusion: the one-level oil standard that meets edible vegetable oil standard GB 2716-81 regulation fully.

Claims (3)

1, a kind of method of edible corn oil extraction, take out raw corn oil in the alcohol fermented beer that it is characterized in that from corn brews alcoholic beverages smart process, being produced, refined and form, the step of refining is: vacuum is got raw corn oil → precipitate and separate → alkali refining deacidification → washing and is removed alkali → vacuum evapn deodorization → heating under vacuum dehydration → Hui Liang → filter at low temperature.

2, the method for edible corn oil extraction as claimed in claim 1 is characterized in that the vacuum evapn deodorization time should continue 3～4 hours, and vacuum tightness is with greater than 700 mmhg (negative pressure), and oily temperature is 150 ℃ and is advisable.

3, the method for edible corn oil extraction as claimed in claim 1 is characterized in that heating under vacuum when dehydration is 700～740 mmhg (negative pressure) with vacuum tightness, and oily temperature is 140～150 ℃ and is advisable.

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