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Cottonseed oil extraction production line

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Cottonseed oil extraction production line Cottonseed oil is oil squeezed from cottonseeds, and is divided into pressed cottonseed oil, extraction cottonseed oil, genetically modified cottonseed oil, cottonseed crude oil, and finished cottonseed oil. The color is darker than other oils. It can be eaten by humans after refining. It contains a large amount of essential fatty acids. It is best to be mixed with animal fats. As a substance inherent in cottonseed oil-gossypol, gossypol is a birth contr

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Cottonseed oil extraction production line
Cottonseed oil extraction production line
Cottonseed oil is oil squeezed from cottonseeds, and is divided into pressed cottonseed oil, extraction cottonseed oil, genetically modified cottonseed oil, cottonseed crude oil, and finished cottonseed oil. The color is darker than other oils. It can be eaten by humans after refining. It contains a large amount of essential fatty acids. It is best to be mixed with animal fats. As a substance inherent in cottonseed oil-gossypol, gossypol is a birth control phenol, consumption of crude cottonseed oil can cause damage to spermatogenic cells, resulting in infertility
Physicochemical properties
Flash point: 113 C
Storage conditions: 2-8
Stability: Stable, flammable, incompatible with strong oxidants, sensitive to light and heat.

Related definition of cottonseed oil extraction production line
Pressed cottonseed oil: The oil obtained by direct pressing of cottonseed.
Extraction cottonseed oil: The oil produced by the Extraction process of cottonseed.
Genetically modified cottonseed oil: oil made from genetically modified cottonseed.
Cottonseed crude oil: Cottonseed oil that cannot be directly consumed by humans without any treatment.
Finished cottonseed oil: cottonseed oil directly processed for human consumption after being processed in accordance with the national standards for finished product quality indicators and hygiene requirements.
Basic ingredients of cottonseed oil extracted from cottonseed oil extraction line
Refined cottonseed oil is generally orange or brown, fatty acid contains palmitic acid 21.6-24.8%, stearic acid 1.9-2.4%, arachidic acid 0-0.1%, oleic acid 18.0-30.7%, linoleic acid 44.9-55.0%, The refined cotton oil removes gossypol and other toxic substances and is available for human consumption. Cottonseed oil contains a large amount of essential fatty acids, and it is best to be mixed with animal fats for eating, because cottonseed oil contains a large amount of linoleic acid, which can effectively suppress the rise of blood cholesterol and maintain human health. The absorption rate of cotton oil by the human body is 98%.
The most original extraction process of cottonseed oil extraction production line.
Fried seeds of cottonseed oil extraction production line
Generally, put 1/41/3 of the capacity in the pot, stir evenly, diligently turn over, the firepower should not be too large, so as not to scorch the shell. After frying, the cottonseed is flattened in the trough, using a stick bucket to dissipate the hot steam, and it is easy to clean through the sieve after cooling.
Screening of cottonseed oil extraction production line
Use artificial sieve or fixed sieve to remove dirt and impurities.
Grinding of cottonseed oil extraction production line
Less material should be cut during grinding
Flow, the speed of the mill is properly fast, so that the cotton seed is easy to break.
Adding water to cottonseed oil extraction production line
Sprinkle water with the roll groove of the roller. During the milling, sprinkle the water while turning the seeds on the other side, so that the billet is evenly draped, and the milling is uniform, about 20 minutes, until the fine billet does not clump.
Steamed billet of cottonseed oil extraction production line
When the powder is poured into the steam barrel, it should be flattened by hand to make the steam barrel evenly ventilated, and the temperature and moisture of the billet are consistent. The bottom of the steam drum is round and shaped like a shau Kei. It is heated evenly and the water level of the steamer remains the same. The distance between the bottom of the steam drum and the water surface should be more than 16 cm, and the fire should be even.
Cottonseed oil extraction production line
Bun
Wrap cakes should be controlled by dispersing waffles, fast, tightly packed and concentrated and fast. Single circle pancakes, about 2 cm thick after pressing, should shorten the time as much as possible to prevent the heat loss in the blank.
Crushing of cottonseed oil extraction production line
When the cake is virgin, the cakes are aligned, and the distance between the rings is adjusted to prevent the cakes from being bumpy. When sharpening, wait until the oil flow is out of line. When the oil line is broken, press it again for 2 hours to loosen it.
Clarification filtering
There are many impurities in the squeezed crude oil. It should be cooled quickly, and then filtered for a period of time, so as not to deepen the color and increase the refining loss.
Edible effect of cottonseed oil extracted from cottonseed oil extraction production line
1. Chinese scholars have found that consumption of crude cottonseed oil can cause damage to spermatogenic cells, resulting in atrophy of the testes without sperm production, resulting in infertility.
The farmers in the cotton-producing areas of our country have suffered from testicular atrophy due to long-term consumption of crude cottonseed oil, resulting in infertility. Gossypol, a phenolic glucoside, is a strong spermicidal drug. Gossypol is highly toxic to the liver, blood vessels, intestines, and nervous system. Free gossypol can also affect most men's loss of libido.
2. The refined cottonseed oil from which gossypol is removed is edible and does not cause the above-mentioned disadvantages. National health standards require that gossypol content in oils and fats is less than 0.02%. When gossypol is not higher than 0.02% in cotton oil, it has no effect on the human body.
3. Cottonseed oil Cottonseed oil contains a large amount of essential fatty acids, and it is best to be mixed with animal fats for consumption, because the content of linoleic acid in cottonseed oil is particularly high, which can effectively inhibit the rise of blood cholesterol and maintain human health.
Refining method of cottonseed oil extraction production line
Cottonseed oil is also the main edible oil. However, wool cotton oil contains gossypol (content about 1%), gum and wax (content varies depending on the shell content of the cotton wool embryo), the quality is poor, it is not suitable for direct consumption, and its refining process is also more complicated.
1. Coarsely refined cotton and oil refining process (continuous)
Lye soft water
 
Filtration of crude oil—→preheat—→proportion of olein and alkali—→mixing reaction—→desoap—→washing—→dehydration—→drying—→cotton clear oil
 
Soap feet wastewater
Operating conditions: The impurity content of the filter crude oil is not more than 0.2%, the concentration of the lye is 2028°Bé, the excess alkali is 10%25% of the theoretical alkali, the de-soap temperature is 7095, and the amount of drum rinse water is 251001/h, oil inlet pressure 0.10.3 MPa, oil outlet back pressure 0.10.3 MPa, washing temperature 8590, washing water addition amount is 10%15% of oil, dehydration back pressure 0.15 MPa, the drying temperature is not lower than 90, the operating absolute pressure is 4.0kPa, and the filtering temperature of the product oil is not higher than 70.
2. Refining process of refined edible oil
Phosphoric acid lye soap feet lye
   
Filtration of crude oil—→preheating—→mixing—→proportioning of oil and alkali—→mixing reaction—→desoap—→mixing

Filtration←—distillation deodorization←—filtration←—adsorption decolorization←—dehydration←—washing←—desoap
      
Refined cooking oil, steam, waste clay, adsorbent, wastewater, soft water, soap feet
Key points of operation: The operating conditions before alkali refining are the same as crude oil refining, the concentration of refining lye is 612°Bé, the addition amount is l%3% of the oil volume, the refining temperature is 7090, and the oil back pressure is 0.15 MPa. Operating conditions such as washing, decoloring, and deodorizing are similar to those of peanut oil refined edible oil. If degreasing is performed after deodorization, the refined oil grade is refined chilled meal oil (salad oil). The process flow after the deodorization process is:
┌→ Soft grease
Deodorized cotton oil—→cooling crystallization—→cultivation crystal—→filtration—┤
└→ Cold meal oil
The refined cottonseed oil can be eaten with confidence!
Development of soap feet after refining cottonseed oil
In the process of cottonseed oil processing, if 10% of soap feet are produced, 100,000 tons of cotton seed oil soap feet will be produced nationwide every year. The resources are very rich, and most cotton seed oil processing plants will discard soap feet as waste It has not been well utilized, causing huge pollution and waste. How to turn these resources into treasure and make them become the booster of expanding the cotton industry chain has become an urgent problem in the cottonseed processing industry. Treating cottonseed oil soap feet can not only solve the problem of cottonseed oil soap feet polluting the environment, but also bring certain economic benefits for enterprises.
Cotton seed oil soap feet are produced in the process of alkali refining. The main function of alkali refining is to remove free fatty acids, phospholipids, proteins, mucus quality, impurities, pigments, metal ions, and the unique gossypol in cotton seed oil. The composition of soap feet varies with the process and raw materials. It generally contains soap 60%-75% (dry basis) and neutral oil 25%-40% (dry basis). Among them, gossypol is inherent in cottonseed oil, which is the main pigment in cottonseeds, accounting for 20% to 40% of the total pigments, and 0.15% to 1.8% of the total weight of cottonseeds. All the gossypol in cottonseed oil enters during alkali refining In the soap feet, it can be easily converted into various dark compounds under alkaline conditions, making the soap feet dark brown.
  According to the main components and characteristics of cotton seed oil soap feet, its development and utilization at home and abroad are mainly concentrated in the following aspects:
Phospholipid
Phospholipids are lipid compounds with important physiological functions. They are natural surfactants and emulsifiers. They have high nutritional value and can be widely used in food, medicine, cosmetics, leather, fiber, dyeing, feed, etc. In the food industry, it is an important additive and emulsifier. It can nourish the body and have a therapeutic effect on cardiovascular disease; it can be used as a preservative for fruits and feed additives; in the rubber industry, phospholipids can be used as softeners and foaming aids Agent.
Phospholipids are an important component of human cells, usually composed of glycerin, fatty acids and choline. Phospholipids in oil are generally combined with proteins, sugars, sterols, tocopherols, biotin and other substances to form a complex complex The bound phospholipids in cottonseed oil are as high as 90%. The content of phospholipids is higher in cottonseed oil, and the content of phospholipids in the cottonseed sleeve is 0.7%~2.0%, second only to soybean. The fatty acids and choline are composed of substances. The phospholipids in the oil are generally combined with proteins, sugars, sterols, tocopherols, biotin and other substances to form a complex complex. The bound phospholipids in cottonseed oil are up to 90%. The content of phospholipids is higher in cottonseed oil, and the content of phospholipids in cottonseed crude oil is 0.7%~2.0%, second only to soybean.
fatty acid
Extracting fatty acids from soap feet can also turn waste into treasure, creating huge economic benefits. With the continuous development of modern industry, fatty acid has become an important basic chemical raw material in the world's industrial products. Its usage in plastics, surfactants, textiles, leather and other fields has shown a steady increase year by year, especially fatty acids. The market demand for synthetic products and various derivatives has exceeded 2,000, driving the prosperity of the entire fatty acid industry. The demand for fatty acids is considerable at home and abroad, and its market prospects are also very broad. In recent years, the amount of fatty acids in the world has been 3 million tons, and the demand for domestic fatty acid products has also increased rapidly. The demand for industrial oleic acid in 1994 was 655.3 tons, and it increased to 16,000 tons in 1999. The demand for industrial stearic acid in 1999 was 314,000. t. The rapid increase in demand has resulted in tight domestic fatty acid products and rising product prices. A large amount of imports are required every year to supplement the domestic market.
  The linoleic acid in the fatty acid composition of cottonseed oil reached more than 50%. Compared with other oil crops, the palmitic acid content in cottonseed oil is higher, at 24.7%
  There are three common methods for preparing fatty acids using soap feet, which are acid hydrolysis method, saponification acid hydrolysis method and hydrolysis acidification method. The saponification depth of saponification and acid hydrolysis can reach 99%, the equipment is simple, the operation is convenient, the production cycle is short, the quality and output are better than other methods, but the acid and alkali consumption is large, the energy consumption is high, the three wastes are serious, only suitable for small Manufacturers with poor scale or soap feet. The acidification hydrolysis method has less investment, simple operation, is beneficial to the hydrolysis of oil and fat, and glycerin can be recovered at the same time, so it is used more, but its hydrolysis rate can only reach 92%~95%. Hydrolysis acidification method due to the presence of impurities in the soap feet affects the hydrolysis rate of oil and fat and the separation of oil and water. When a catalyst is used, the stability of the emulsion is easily destroyed. Therefore, the hydrolytic acidification method is not suitable for preparing fatty acids from soap feet.
  The main processing technology of soap feet to prepare fatty acids is as follows:
(1) Saponification and acidolysis
   lye sulfuric acid
    
  Soap feet-full saponification  acid hydrolysis  water washing-crude fatty acid
(2) Acidification hydrolysis method
   sulfuric acid free sulfuric acid, sodium sulfate
    
Soap feet- dilution  acidification  mixture  cooking  washing of oily substances  hydrolysis  crude fatty acid
  ↓
glycerin
other
In recent years, there have been some new uses for cottonseed oil soapstocks. For example, polyamide resin is prepared from liquid acid (oleic acid) separated from cottonseed oil soapstock fatty acids. Its main purpose is to make plastic films. Printing inks and adhesives. Other products include soaps, mold release agents, plasticizers, glycerin, inks, lubricating oils and pesticide solvents, and beneficiation collectors.
The soap feet after the refining of cottonseed oil can be used to prepare detergents, fatty acid products, etc., and can also be used to prepare biodiesel. Shi Rubing and others used cotton seed oil soap feet as raw materials, and after acidification, they directly methylated to synthesize mixed fatty acid methyl esters, with a conversion rate as high as 83%. The process is simple, the production cost is low, the comprehensive utilization of resources is realized, and at the same time, the pollution of cotton seed oil soap feet to the environment is eliminated. Keskin et al. tested biodiesel prepared from cotton seed oil soap feet in a single-cylinder direct injection diesel engine and compared it with petrochemical diesel in soot emissions, power torque, etc., and obtained good results, indicating that biodiesel can be used as a diesel engine An ideal alternative fuel.
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