Leaching refinement technique of rapeseed oil

[0024] Example 1:

[0025] The extraction and refining process of rapeseed oil in this embodiment includes the following steps:

[0026] (1) Pretreatment: sieving the rapeseed to remove the solid particles and impurities, then adding it to a pulverizer for crushing, and then pressing it into a rapeseed chip by a wheel embryo machine;

[0027] (2) Extraction: Mix the rapeseed chips obtained after pretreatment with a solvent, and add the raw chips to the extraction tank according to 55-70% of the volume of the extraction tank. The position in the tank is higher than the height of 110-160mm, the leaching temperature is 50-55℃, the leaching time is 1-2h, during which it is stirred every 20-30min to obtain the extract, which is filtered, Get the crude rapeseed extract and wet meal;

[0028] (3) Evaporation and cold extraction: the crude rapeseed extract is evaporated and cold extracted to prepare crude rapeseed oil.

[0029] (4) Crude oil refining: the crude rapeseed oil is subjected to degum

[0038] Example 2:

[0039] The extraction and refining process of rapeseed oil in this embodiment includes the following steps:

[0040] (1) Pretreatment: sieving the rapeseed to remove the solid particles and impurities, then adding it to a pulverizer for crushing, and then pressing it into a rapeseed chip by a wheel embryo machine;

[0041] (2) Extraction: Mix the green rapeseed chips obtained after the pretreatment with the solvent, the feed amount of the green chips is added to the extraction tank according to 55% of the volume of the extraction tank, and the solvent is in the extraction tank according to the green pieces Calculated from the height of 110mm higher than the height of the leaching temperature, the leaching temperature is 50℃, the leaching time is 1h, during which it is stirred every 20min to obtain the extract, which is filtered to obtain the crude rapeseed extract and wet meal ;

[0042] (3) Evaporation and cold extraction: the crude rapeseed extract is evaporated an

[0052] Example 3:

[0053] The extraction and refining process of rapeseed oil in this embodiment includes the following steps:

[0054] (1) Pretreatment: sieving the rapeseed to remove the solid particles and impurities, then adding it to a pulverizer for crushing, and then pressing it into a rapeseed chip by a wheel embryo machine;

[0055] (2) Extraction: Mix the green rapeseed chips obtained after pretreatment with the solvent, the feed amount of the green chips is added to the extraction tank according to 70% of the volume of the extraction tank, and the solvent is in the extraction tank according to the green chips. Calculated at a height of 160mm higher than the position, the leaching temperature is 55°C, the leaching time is 2h, during which it is stirred every 30min to obtain the extract, which is filtered to obtain the crude rapeseed extract and wet meal ;

[0056] (3) Evaporation and cold extraction: the crude rapeseed extract is evaporated and cold extracted to prepare crude