Rapeseed oil pressing equipment

Rapeseed oil is golden or brownish in color and has a certain pungent odor. It is called "green odor" by folks. This odor is caused by a certain amount of glucosinolates, but the premium varieties of rapeseed do not contain this substance.

 

Ⅰ. Production process of rapeseed oil pressing equipment:

Rapeseed→cleaning→steaming and frying→squeezing→filtering→crude oil→going to the refining workshop

 

1. The complete set of rapeseed oil equipment developed by Zhongxing Grain and Oil Machinery is mainly hot pressing of rapeseed, but also cold pressing.

2. Adopting cleaning, removing impurities, steaming and squeezing technology, the squeezed oil has a light color, low acid value and high nutritional value.

3. The benzopyrene index that customers are more concerned about is solved in the squeezing process, and the nutrients are fully maintained.

4. The oil press adopts a screw press, the output of this machine can be adjusted, the residual oil is low, and the production efficiency is high.

Main equipment description：

 

Ⅱ. Rapeseed oil refining process:

1. Brief description:

This workshop adopts the intermittent refining production process. According to the different types and quality of crude oil, the process parameters can be adjusted and different refining methods can be selected to produce first, second and third grade edible oil; the process equipment we provide has the following advantages:

Flexible and convenient adjustment, even if the quality of raw materials changes slightly, it can still be produced normally;

Maximum use of heat, significant energy saving effect;

The fully enclosed production process avoids the oxidation of grease and ensures the high quality and stability of the product;

The appearance of the equipment is clean and beautiful, the equipment is guaranteed for a long time, and the life-long after-sales service.

2. Description of refining process:

(1)Process diagram:

Crude oil → alkali refining → degumming → decolorization → deodorization → cooling → deodorized oil → dewaxing workshop

 

(2)Process flow description:

① Alkali refining operation: adjust the oil temperature to about 60℃, then add 20-30Be lye (1kg caustic soda + 5kg water lye) within 5-10min, and stir for 5-10min under the condition of 60r/min, Observe the formation and separation of soap particles after the reaction and start to slowly heat up, change to slow stirring, and increase by about 1°C every minute. When the temperature reaches 65°C, the oil soap separates obviously, stop stirring and start to settle the soap feet. Generally, it is necessary Soap feet are released after 4-6 hours.

②Washing operation: After the soapstock is released, the oil is further heated to 75°C, and then hot water greater than 5% of the oil weight is added for washing. The water temperature should be 5-10°C higher than the oil temperature, and the water temperature should be 5-10°C higher than the oil temperature. It is easy to emulsify when the water temperature is too low; After adding water, continue to stir for 5 minutes, and then settle for 3-4 hours, release soapy water, and wash repeatedly 1-2 times, depending on the quality of the clear oil.

③Decolorization operation: turn on the vacuum pump to make the vacuum ≧700mmHg; first suck the washed alkali refining oil into the decolorization tank, turn on the stirring and increase the temperature under the vacuum state, and continue to stir for 10 minutes after the temperature reaches 100℃ to reduce the water content in the oil to 0.1% Below, inhale a small amount of decolorizing agent (white clay or activated carbon), the amount of addition depends on the oil product, generally 2%-4% of the oil amount, after stirring for 20 minutes, the temperature is cooled to about 90°C, the vacuum is broken, and the decolorization pump is turned on to filter The machine separates oil and soil to obtain decolorized oil.

④ Deodorization operation: the decolorized oil is sucked into the deodorization tank by a vacuum. When the vacuum degree reaches 755mmHg and the temperature is above 150℃, the bottom is opened and the steam is directly distilled and deodorized, and the timing is started.

a. Deodorization time: 2-3h,

b. Deodorization temperature: 220℃-240℃,

c. Deodorization vacuum degree: 755mmHg or more,

d. The whole process must be directly steam distilled.

3. Description of main equipment：

Serial number	Device name	Quantity	Description
1	Refining tank	2	Used for acid refining, alkali refining and water washing
2	Decolorizing tank	1	Used for dehydration, mixing oil and decolorant
3	Deodorization tank	1	It is made of 304 stainless steel and used for distillation to remove oil odor and light components
4	Vacuum pump	1	The vacuum needed for decolorization and deodorization can reach 755mmhg
5	Air compressor	1	Drying bleaching clay
6	Steam generator	1	Generate steam for distillation
7	Filter	1	Filtration separation of clay oil
8	Heat conducting oil furnace	1	Provide system heat energy,temperature can reach 300℃

 

Ⅲ. rapeseed oil dewaxing process:

1. Brief description:

In the processed rapeseed oil fat, the waxiness inherent in the rapeseed oil fat can be separated from the fat through the dewaxing process, which enhances the nutritional value of the fat and improves the taste and quality of the fat.

The equipment characteristics of this workshop:

The operation is flexible and convenient, and the labor intensity is extremely low;

The production and production environment are clean and hygienic in a fully enclosed state;

All clean tap water is recycled, no sewage is generated or discharged, and it meets environmental protection standards.

2. Description of dewaxing process：

Deodorized oil → pre-cooling → crystallization and crystallization → filtration and separation → refined oil

 

3. Main equipment description:

Serial number	Device name	Quantity	Description
1	Crystallizer	3	It is used for oil freezing and crystallization
2	Refrigeration unit	1	Provide low temperature refrigerant to cool and freeze the oil
3	Filter	1	Used to separate oil and wax
4	Refrigerant pump	1	For refrigerant circulation
5	Finished oil tank	1	Used for temporary filtration of product oil

 

 

 

 

Professional Advice

 

Please kindly inform us your required daily capacity, treated quantity, raw material, covering space and related data,so that we can make flow chart production line for you as your requirement. zhongxing machinery will stand at your point to suggest low cost and suitable production line for you. Sincerely want to cooperate with you.