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

Very fast and highly effective water removing device, meant for high duty applications.
Easy full automatic operation.
Removes water, moisture and air bubbles: dissolved water: 80%, free water: 100%, air bubbles: 100%
Viscosity range from 10 ~ 600 cSt.
Oil temperature from 15°C ~ 60°C.
On demand, all systems can be supplied by customer requirement.

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.

Features:

Fully automatic operation.
Ultimate water removal through oil recirculation – to zero-free water content or to 50 % below saturation level.
Reduces water content in a single pass by 0.25% – 1.5% depending on inlet oil temperature.
Removal of soluble gases and air.

Oil Condition for LVDH Machine:

Viscosity: Not above CST 320 max
Water content: Not above 20,000 ppm
Oil dirt level: Not above NAS 12

RESULT

Hydraulic oils
Turbine oils
Lubricating oils
Gear oils.
Hot Press in plywood Industries
Gase Power Generation Plant
Hydro Power Generation Plant
Thermal Power Generation Plant
Steel Plant
Cement & Ceramic Industries0
Hydraulic Press & Hot / Cold Steel Mills.0
Bearing Lubrication System.
Pulp, Cotton, Sugar & Paper Plants.

Removes coolant, sludge, & chip from the sump tank
Filters the sludge and chips from the coolant fluid
Returns filtered coolant to the machine sump tank
Moves the coolant to waste for disposal

Eliminate Oil Change.
Eliminate Mechanical Filters.
Increase Production And Reduce Rejection.
Increase Life of pumps, Valves & Seals.
E H & S (Environment, Health & Safety) friendly.
Longer Oil Life.
No Oil Leakages.
Longer Equipment Life.
Low Operation and Maintenance Cost.
Energy Saving by keeping Oil Clean.
Easy to operate for an efficient method for continuous removal of moisture from oil.
No damage to oil and the unit offers dry, dehydrated oil.
Significantly reduced residence time with fast and efficient heat transfer
Reduced pressure drop
fouling and ability to process high-viscosity and high-solids materials
High evaporation ratios.
Easy to clean/maintain equipment.

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

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