Food-grade white oil production process
A production process, food-grade technology, applied in the field of food-grade white oil production process, can solve the problems of affecting economic benefits, high production cost, complicated process flow, etc., and achieve the effect of increasing economic benefits, stable production process and simple process
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Embodiment 1
[0029] A food-grade white oil production process, comprising the following steps:
[0030] 1. Distillate oil is used as raw material at a pressure of 10MPa and a volumetric space velocity of 0.5h -1 , under the adjustment of the temperature of 250 ° C, the raw material oil is mixed with hydrogen and then introduced into the hydrotreating reactor. Under the action of the hydrotreating catalyst, impurities such as hydrodesulfurization and denitrogenation and aromatic hydrocarbon saturation reactions are carried out to obtain hydrotreating Product; hydrofining conditions: reaction temperature 270°C, reaction pressure 8MPa, volume space velocity 1.2h -1 ;
[0031] 2. The hydrotreated product obtained in step 1 is stripped and then introduced into the isomerization decompression reactor. Under the conditions of reaction pressure of 8MPa and temperature of 340°C, the isomerization depointation reaction is carried out through the isomerization depreciation catalyst. Obtain isomeris...
Embodiment 2
[0042] A food-grade white oil production process, comprising the following steps:
[0043] 1. Using distillate oil as raw material at 15MPa pressure and volume space velocity of 1h -1 , under the adjustment of the temperature of 260 ° C, the raw material oil is mixed with hydrogen and then introduced into the hydrotreating reactor. Under the action of the hydrotreating catalyst, impurities such as hydrodesulfurization and denitrogenation and aromatic hydrocarbon saturation reactions are carried out to obtain hydrotreating Product; hydrofining conditions: reaction temperature 325°C, reaction pressure 10MPa, volume space velocity 1.4h -1 ;
[0044] 2. The hydrotreated product obtained in step 1 is stripped and then introduced into the isomerization decompression reactor. Under the conditions of reaction pressure of 10MPa and temperature of 360°C, the isomerization depreciation reaction is carried out through the isomerization depreciation catalyst. Obtain isomerism depressant ...
Embodiment 3
[0055] A food-grade white oil production process, comprising the following steps:
[0056] 1. Distillate oil is used as raw material at a pressure of 20MPa and a volumetric space velocity of 1.5h -1 , under the adjustment of the temperature at 270°C, the raw material oil is mixed with hydrogen and then introduced into the hydrotreating reactor. Under the action of the hydrotreating catalyst, impurities such as hydrodesulfurization and denitrogenation and aromatic hydrocarbon saturation reactions are carried out to obtain hydrotreating Product; hydrofining conditions: reaction temperature 380°C, reaction pressure 12MPa, volume space velocity 1.6h -1 ;
[0057] 2. The hydrotreated product obtained in step 1 is stripped and then introduced into the isomerization decompression reactor. Under the conditions of reaction pressure of 12MPa and temperature of 380°C, the isomerization depreciation reaction is carried out through the isomerization depreciation catalyst. Obtain isomeris...
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