Low Vacuum Dehydration Machine ( lvdh machine )
The Low Vacuum Dehydration ( lvdh machine ) technique is mainly used for separating moisture content from the oil which is present in three forms:
a) Dissolved Form
b) Emulsified Form
C) Free form
Working Principle of Low Vacuum Dehydration machine :
The heating of hydraulic oil is performed indirectly and then that is poured into a vacuum chamber where it is scattered into a very thin layer of film thereafter it vaporizes & gets dissolved with gases at low temperature. How do separate water from oil?
Now both air and gases that are derived from the previous process are now left to condense so that it gets separated from the oil.
Our ultimate goal of heating oil indirectly at low temperature is to ensure that there is no burn off hence no oxidation and no additional depletion of oil.
Low Vacuum Dehydration Machine works at the site
Low Vacuum Dehydration Machine & Degasification – LVDH Specification are manufactured & assembled with extremely minute care & research and as per industry standards.
Comparative analysis of Vacuum Dehydration With Centrifugal water removals:
Centrifuging | Vacuum Dehydration |
Heating oil to Approximately between 70 to 80°C is required to efficiently extract water | Whereas in LVDH technology, the Water is removed from oil even less than < 55°C. |
Heating oil depletes additives. | No additive depletion. |
Must be used off-line. All related machinery must be stopped to drain oil into barrels / tanks for cleaning. | Can be used on-line, is therefore user-friendly. |
Somewhat cleans low molecular weight oxidized oil fraction | Easily removes low molecular weight oxidized oil fraction |
Cannot remove emulsified water. Gear pumps used in centrifuging increase emulsification. ; | Easy & total removal of free & emulsified water / moisture. |
Cannot remove low molecular weight oxidised oil fraction | Removes |
Cannot remove dissolved gases like Ammonia / Nitrogen. | Removes |
Cannot remove solid impurities below 10 micron, efficiently. | In conjunction with Electrostatic-oil Cleaners, removal efficiency is better than 0.01 micron. |
Centrifugal systems do not clean any dissolved gas | Clears the dissolved gasses very easily |
Many high speed moving parts requiring frequent maintenance | Only two pumps. Vacuum & discharge & slow moving parts. |
| Automatic water discharge. |
Heating oil to Approximately between 70 to 80°C is required to efficiently extract water | Whereas in LVDH technology, the Water is removed from oil even less than < 55°C. |
Depleting anti-oxidation additive | No additive depletion |
Somewhat clears emulsified water | Easy & total removal of free & emulsified water |
Somewhat cleans low molecular weight oxidized oil fraction | Easily removes low molecular weight oxidized oil fraction |
Centrifugal systems do not clean any dissolved gas | Clears the dissolved gasses very easily |
It consumes very High energy | As compared to the centrifugal system it consumes very low energy |
Others Technologies vs Low Vacuum Dehydration Machine
Destiny International Low Vacuum Dehydration Result :
The extracted low-weight molecular oil gets accumulated in the hydraulic fluid and settles in oil. Hence (LVDH) low vacuum dehydration technique is used to clear the oil & ultimately bring back oil to its original properties.
This technology mainly evolves around the basic fact that the water boiling point is 100℃, and the vapor pressure above the water surface is atmospheric pressure but when we reduce the vapor pressure to a vacuum condition up to 750 torrs, then the boiling point of water gets reduced from 100℃ to less than 55℃.
Low vacuum dehydration machines are used to :
• Extracts water from oil
• Removes moisture from oil
Low Vacuum Dehydration Machine Performance Analysis :
S.NO
| Degrees of Cleanliness
| Adopting a Vacuum Dehydration Process
|
1. | 100% | Free and emulsified water alongside free gases |
2. | 95% | of dissolved Water |
3. | 90% | of dissolved gases |
Hence under this technique, there is a vacuumed chamber and a shower arrangement for the oil (mixed with moisture content). There is a heater arrangement that heats up the oil under controlled temperature settings of a maximum of 55℃ only when the heated oil is showered inside the vacuum chamber under a high vacuum, moisture particles would get evaporated or get vaporized under the vacuumed condition thereby clearing the moisture from oil. Hence Clean oil is collected at the bottom of the chamber and delivered into the system.
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Low Vacuum Dehydration Machine