Roots liquid ring vacuum pump system for Rice bran oil physical refining

Roots liquid ring vacuum pump system is used for physical refining of rice bran oil. It has the advantages of low power, low protection, sensitive and inconvenient device, high production profit and good economic benefit. The waste oil produced has met the requirements of the fourth grade refined rice bran oil of the national standard. This unit is suitable for small-scale physical refining production line.

In physical refining, the vacuum insulation pressure is less than or equal to 200 Pa. Therefore, during the life of oil, the liquid ring vacuum pump and the steam-water series vacuum pump can not meet the requirements, and the steam jet vacuum pump is normally selected. However, the operation profit of steam jet vacuum pump is high, and it needs to be equipped with small and medium-sized steam boilers, which is not applicable to some medium-sized oil plants. Roots vacuum pump is widely used in vacuum distillation, vacuum evaporation and dehydration crystallization of chemical industry, but less used in oil industry. We equipped Roots liquid ring vacuum pump system for the physical refining and deacidification production line of rice bran oil, increased production profits, and produced a decent new national standard fourth grade refined rice bran oil. This unit is suitable for small-scale physical refining production line.

Rice bran decolorizing oil enters the deacidification tower, passes through the heat conducting oil in the coil tube at 260-270 C under the vacuum of 666.6Pa to keep fresh, and passes through the indirect steam at the same time (pressure 0.1MPa, dosage about 2% of oil weight) to continue the steam distillation operation. The whole desulphurization fragmentary vacuum is produced by Roots water ring vacuum unit. The result of quality index test of waste oil and Grease Paste acid. Waste bamboo weaving has reached the national standard of grade IV refined rice bran oil, with high acid value, good purity and low refining loss.

During the theoretical life, the vacuum of acid removal fragments was maintained at about 75 Pa. During the debugging, it was found that indirect vapor had no greater effect on the fragmentary vacuum. The indirect vapor pressure fluctuated with the fluctuation of acid vapor in the mixed grease paste. There was no need for Roots liquid ring vacuum pump system to have a larger amount of indirect vapor. In this case, the indirect vapor should not be too large to generate oil rush, or the vacuum of temporary deacidification tower should not be used.

In general, it is more advantageous to select the liquid-ring vacuum pump as the front-stage pump than other vacuum pumps in Roots liquid-ring vacuum pump system. This is mainly due to its ability to extract a large amount of condensable vapor, especially when the mechanical vacuum pump of gas-holding oil seal has insufficient ability to remove condensable vapor, or the solvent used can deteriorate the pump oil. Performance, or when the vacuum system does not allow oil contamination, is more obvious.

roots-liquid-ring-vacuum-pump-system-for-rice-bran-oil-physical-refining

Roots liquid ring vacuum pump system Characteristics :

1. There is a definite gap between the rotors of Roots vacuum pump and the pump chamber, between the rotors and the rotors in the unit. They are not in contact with each other and need not be slippery with thieves.

2. The Rotor of Roots Vacuum Pump has good symmetry, which can popularize the rotational speed, so that a compact large pumping speed pump can be built.

3. The vibration of the unit is small and the volume is large.

4. In Roots vacuum pump chamber, there is no compression like mechanical vacuum pump, so it does not need exhaust cylinder. It is also for this reason that the condensable acid vapor of the grease paste can be removed.

5. Quick start-up, can achieve the limit vacuum in temporary time, low power, low operation protection;

6. Roots vacuum pump has a large pumping speed in a wide pressure range (1-1000Pa) and can expel distilled gas rapidly.

Roots liquid ring vacuum pump system Performance:

Although Roots liquid-ring vacuum pump system is only suitable for small-scale oil plants, compared with steam jet vacuum pump, Roots liquid-ring vacuum pump system does not need steam when operating, so it does not need to be equipped with steam boilers for it. It can be used in areas where the electricity price is heavy but the coal price is high. On the device, elevated pumps are adopted for normal steam jet vacuum pumps, and the height of the device is 11m. The Roots liquid ring vacuum pump system is inconvenient and can be positioned sensitively according to the process and plant conditions, occupying less space. Vacuum unit equipped with 15t/d rice bran oil physical refining production line has a specification of 1350 *900 *2110mm. It is easy to construct and reliable to operate. In addition, the steam ejection vacuum pump has a large music, so there is no need for production and surrounding conditions in the group. Roots water ring vacuum unit is absolutely quiet, and it is also better than the steam ejection vacuum pump in environmental protection of the group. Roots Water Ring Vacuum Unit’s first capital injection is higher than that of steam jet vacuum pump, but in the coming years, its operation power is low and its protection is low.

Roots liquid ring vacuum pump system can be used for physical refining and deacidification of small-scale rice bran oil. It has the advantages of sensitive device, low power and low protection. The waste oil produced can meet the requirements of the fourth grade refined rice bran oil of the national standard, and can be used in small-scale physical refining production line.

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