What is the oil extraction process for rapeseed?

First, first place rapeseed.

Dried in the sun and cleared, the oil squeezed out will be clean and free of impurities. When squeezing the oil, the wok is first fired at 70 degrees, and the rapeseed in the pool is rolled into the wok by the screw.

Second, the general sun-dried rapeseed only needs to be stir-fried for 20 minutes, when the temperature gauge points to 150 degrees of high temperature, then the rapeseed has been fried, the staff must open the wok-gate gate as soon as possible, and put the rapeseed into the second pool.

Third, Jiaolong will suck the fried rapeseed into the iron bucket of the oil press and start to extract oil.

Fourth, open the iron bucket gate to flow rape into the press shaft, so that the vegetable oil flows into the iron plate from the press shaft, and then flows into the barrel containing oil through the iron trough.

5. Place rapeseed oil.

Pour into a filter and filter, it takes five minutes to filter each barrel of rapeseed oil.

6. Pour the filtered rapeseed oil into an aluminum barrel to boil the rapeseed oil and remove phosphorus.

7. Pour the dephosphorized rapeseed oil into the cooler to cool, and it only takes seven or eight minutes to drop from a high temperature of more than 150 degrees to about 50 degrees, and then put the cooled rapeseed oil into an iron drum.

8. Finally, pour the cooled rapeseed oil into the prepared plastic bucket.

According to the function, the oil press can be divided into screw oil press and hydraulic oil press.

1. Hydraulic oil press.

The hydraulic oil press is a traditional small oil press, and the production process is intermittent. The process is characterized by low operation technical requirements, high oil yield, and high crude oil, but the labor intensity is large. The applicable occasions of the hydraulic oil press are:

The processing capacity is small, the production is small, and the daily processing capacity of a single unit is about 1 ton.

2. Screw oil press.

The fully automatic screw press is an oil press that can operate continuously. The technical characteristics are: low operation technical requirements, high oil yield, poor crude oil quality compared with hydraulic oil press, and labor intensity lower than that of hydraulic oil press.

The automatic screw press is suitable for small processing capacity, small workshop production, and the daily processing capacity of a single machine is about 2-8 tons.

3.Large and medium-sized screw oil press units.

The screw oil press unit is suitable for large and medium-sized, continuous and large-capacity oil plants. The technical characteristics are: continuous production, low labor intensity, and high oil yield.

1. Production process of rapeseed oil extraction equipment:

1.Cold-pressed process: rapeseed, cleaning and impurities, cold-pressing, cold-pressed crude oil, coarse filtration, refining, cold-pressed oil, rapeseed cake.

2.Hot pressing process: rapeseed, cleaning and impurities, steaming and frying, pressing and squeezing oil, precipitation, refining tea oil; The main equipment components: hoist, cleaning screen, steaming wok, oil press, filter, crude oil temporary storage box, second, rapeseed oil crude oil refining equipment production process.

Crude oil one alkali refining one degumming one decolorization one deodorization one dewaxing workshop (or refined oil workshop).

The main equipment consists of: refining tank, decolorization tank, deodorization tank, heat conduction oil furnace, filter, etc.

Third, rapeseed oil dewaxing equipment process.

In the processing of oils and fats, the inherent wax in the oils can be separated from the oils through the winterization dewaxing process, which can improve the nutritional value of the oils and fats and improve the taste and quality of the oils.

The main equipment consists of: freezer, filter, crystallization tank, refined oil tank, etc.

The cost of equipment is related to the capacity, configuration, and quality of refined oil requirements, which cannot be said in a word;

Recently, I read a sentence and was impressed. The phrase goes like this: "What happens on the face when you eat fried food regularly?"

Laughed out loud. "It's true that fried food is high in calories and has the taste of a pan, and has always been loved by people. Especially friends from the north.

On the occasion of the festival, the family always makes fried food to entertain guests. For example, I know that there is a lot of oil used in fried foods such as fried chicken thighs and fried chicken. Cooking oil after use.

It was cloudy, and a lot of people fell straight down, which is really a waste. During the frying process, the flour brought to the food will form a slag, and the large slag can be filtered with the naked eye, but the fine slag will fry for a long time and mix into the cooking oil, making the cooking oil very cloudy. Using this oil twice will affect the taste of the food, and the color is not good.

In fact, there are ways to deal with frying oil once or twice, and cooking oil can be reused, and today I will talk about this topic. How to clean the cooking oil for frying.

The oil that is fried once or twice at home already looks relatively muddy, in fact, the residue in the cooking oil can be cleaned up, and the cooking oil can be cleaned, and the method is not difficult, I will share it with you. Method 1, make another pan and pour the fried oil into it. Here you need to heat up the pot first.

Prepare the appropriate amount of starch in a bowl, add a small amount of water to make the dough, and if it is too thin, you can increase the starch appropriately. Wait until the oil temperature rises, pour 1 3 of the starch dough into the pan, don't pour too much at once, heat yourself so that the oil doesn't splash out, and when the pan noodles calm down, slowly pour the remaining starch dough into 3 times. The cloudy oil can be seen starting to clear and the starch darkening.

Its principle is that starch has good adsorption, can adsorb impurities in oil, and remove the fishy smell in oil. Once the oil surface is clear, you can remove the starch dough and continue to heat and evaporate the water in the oil.

When there is little moisture in the pot, add eggshells to absorb carbonized particles in the dirty oil. After about 2 minutes, turn off the lights, remove the impurities, and let the cooking oil stand for 30 minutes, and the frying oil will become clear. Method 2, no debris.

The specific operation method is the same as that of starch. Cut the radish into thick strips, poke a few holes in the radish slices with chopsticks, put in the cloudy oil, put it in weak heat, fry it, remove the radish from the surface, remove the residue on the surface, put it in the oil and continue to fry, and the cooking oil will become clear after repeating it several times. Oil damage from repeated use may become clear after using the oil once or twice, but it is not recommended to repeat it more than once.

Among them, there are many harmful substances and nutrients.

Basic churn. High-temperature heating will polymerize the fatty acids in the oil, and repeated heating of the edible oil at high temperature will produce a lot of fatty acid polymers, because this substance will greatly increase the burden on the liver. Closing Remarks:

Today's knowledge of frying oil should be known. If it's simple and practical, send it to a friend or family member. That's it for this episode, and I look forward to seeing you next time.

Logically speaking, whether it is a traditional pressing method, or a modern mechanized rapeseed oil, have passed the high temperature heating, filtration and other procedures to press out of rapeseed oil, its purity is more than 90%, even if the oil contains a small amount of water and impurities are also minimal, as long as through the precipitation of a month, the rapeseed oil you squeeze out will be more crystal clear, there is no need to add any chemical reagents to the oil to promote it precipitation clear, That would only destroy the quality and taste of the oil.

Whether it is with the traditional pressing method, or the modern mechanized pressing rapeseed oil, have passed the high temperature heating, filtration and other procedures to press out of rapeseed oil, its purity is more than 90%, even if the oil contains a small amount of water and impurities are also minimal, as long as through the precipitation of a month, the rapeseed oil you squeeze out will be more clear.

As long as the rapeseed oil that has just been squeezed out, pour it into the pot and reheat it to boil, let them boil the water in the oil in the pot, burn the impurities to let it stick to the bottom of the oil pan and precipitate, and then wait for the oil in the pot to cool, use a slightly denser cotton gauze, and filter them all again, I believe that the purity of your rapeseed oil will be higher, the oil quality will be clearer, the quality and taste will be better, and the shelf life of rapeseed oil will be longer, and there is no need to add anything to make the rapeseed oil clear.

This looks at the machine. Don't look at the raw materials. There are three or four courses. There is one.

Summary. When mustarding rapeseed oil in rural areas, soybeans can be added to make the oil clearer.

What can be added to rural mustard oil to make the oil clearer?

Soybeans contain a large number of amino acids, generally speaking, many toxic substances are composed of proteins, so the amino acids in soybeans can react with these proteins, and naturally some of the toxic substances in the hands can be purified, and they can also play a certain role in purifying the oil.

You can also add brine to the oil, and the ratio of brine is 1:4.

Adding brine to rapeseed oil must be added in a certain proportion. The oil extraction machine will flow out along with some fine rape residues at the same time as the oil is discharged. After adding hot brine, the fine residue absorbs water and precipitates by stirring.

After filtration, what is obtained is pure rapeseed oil without impurities.

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1. Clean up. The raw rapeseed is first sieved with a vibrating screen to remove large and small impurities. If it is necessary to remove the shoulder mud in the first material of rapeseed mold lifting, you can use Wolong iron roller to grind, and then use a sieve to remove the crushed mud.

The impurity content in the final material is not exceeded, and the denier number of the material must be strictly prevented from entering the oil press.

2. Broken skin. A small roller mill is used to roll the rapeseed grains to break the skin. It is required that the broken skin will neither fall off nor be broken, and it will be in the shape of "opening a smile", and the breaking rate will not be less than 85%; The powder degree should not exceed 5%, the feeding should be uniform during operation, the flow rate should be appropriate, and the spacing of the rolling roll should be adjusted appropriately.

3. Add water. Put the rapeseed material in a frying pan, stir and add some hot water, and add the water to 13%-15% of the water content in the material.

4. Stir-fry the season. The final temperature of the frying material is 120 -132, and the clinker is not exposed to oil, elastic, loose and scattered, and the ripeness is uniform and not pinched. The residual moisture of the clinker after frying is about 2%.

At the same time, it is necessary to ensure that the material temperature of the oil press is 120 -125.

5. Pressing. After the preheating of the press chamber is normal, you can start to officially feed the clinker, and adjust the thickness of the cake to mm. The effect of squeezing is good or bad, and you can randomly determine whether the stir-fried material is qualified.

Therefore, the pressing operation should be observed, inspected and adjusted frequently. In order to maximize the oil yield of the pressing, the pressed cake should be adjusted to be thinner, but the cake is required not to emit green smoke and burnt, and the residual oil of the dry cake is controlled between 5% and 6%.

6. Crude oil treatment.

The squeezed crude oil enters the oil pool, and the solid impurities are removed by precipitation, and if you want to further remove impurities, you need to configure a filter to get clean oil.