We, “Ultrafab Engineers”, take immense pride in introducing ourselves as the leading manufacturer and supplier of
Industrial filtration & Drying equipment and chemical process Equipments.
The products are manufactured from superior quality raw material sourced from the trusted vendors and we are
using latest machinery and technology for same. To ensure that our offered products are in-line with established
quality standards of the industry.
We are also backed by an eminent Mechanical engineer having 35+ years of hands‐on industrial experience in the
field of designing and operations of various equipment and systems. These equipments are designed with precision
and in accordance with Good Engineering Practice and standards specified in ASME Section VIII Div I.
Our infrastructure is well-connected to the nearby transportation modes.
Agitated Nutsche filters offer an economic operation
where the maximum percentage of liquid in a slurry
is separated through mechanical means. The remaining
moisture can be removed by evaporation to obtain dry
products.
It consists of a cylindrical shell with welded dished end at the
top and either a flanged and bolted dished end or a welded
dished end / flat welded end at the bottom depending on
process/customer’s requirements. The vessel is divided
into two compartment by means of a perforated plate, provided
with suitable filter cloth or porous tiles. An agitator of unique
can perform multifarious activities by manipulating its movement of vertical and rotational directions
simultaneously, by push buttons switches/PLC. The filter is
capable of operating under either pressure or vacuum or a combination of both.
OPERATION
Slurry is fed into the top compartment from where filtrate passes into the lower chamber en route to receiver. Solids
are deposited on the filtering media in the top compartment and take the shape of cake of a uniform thickness.
The agitator pushes the solid content in the slurry upwards by keeping it under suspension till maximum possible
filtrate passes through the filter bed. This reduces time and increases productivity. It then seals the cracks in the
cake, which develop after most of the filtrate has passed through, by smoothing the top surface of the cake. It also
squeezes out some of the moisture in the cake by slightly pressing the cake uniformly with the help of specially
designed blades.
After the initial solvent/mother liquor has been separated, sometimes it is necessary to wash the cake. The agitator
has been designed in such a way that after adding wash liquor on the cake, the entire cake can be re-slurried and
agitated, so that all the particles forming the cake can be exposed to wash liquor and be thoroughly washed. This
improves the quality of the finished products.
After washing and removal of wash liquor, the cake can be discharged through a quick opening side discharge door,
by rotating and lowering agitator in the discharge direction. No manual handling is required.
ADVANTAGE OF AGITATED NUTSCHE FILTERS
The filter works as a completely closed system, eliminating any possibility of atmospheric pollution from toxic fumes /
obnoxious smell generated from slurry.
• Very high solvent recovery is possible.
• Explosion or fire hazard on account of spillage is eliminated.
• Manpower saving. All operations can be handled by a single unskilled person with a little training.
• Very effective washing of cakes due to re – slurring resulting in thorough particulate washing and reduces number
of washes, and volume of wash liquor.
• Possibility of doing reaction filtration, washing and distillation in the same equipment. In some cases drying
operation can also be carried out in the same equipment. Heat transfer surface can be provided by means of a
jacket or limpet coils on the vessel walls. Indirect heating can be provided on the filter base and agitator.
• Available in special construction for sterile application with high standard of particulate purity
Rotary Vacuum Paddle Dryer is a jacketed cylindrical
vessel with a large diameter hollow shaft (Agitator).
Attached to the shaft are hollow paddle provided with
specially designed scraper blades, which scrape the
entire internal surface of the dryer and continuously
move and rotate the material thereby precluding the
possibility of material remaining in contact with hot
surface for protracted period of time.
The jacket and hollow shaft with paddles can be heated
with hot water, steam or any other thermal fluid capable
of providing a large indirect heat transfer area. Cooling
can be also be done by cold water, brine or any other
refrigerant through the jacket and hollow shaft.
Limpet coil can be provided in lieu of jacket, if liquid
heating medium is used. Hard facing of shaft provided in
way of gland packing areas of trunions. Arrangements for
nitrogen purging provided. Bag cleaning arrangements with pulsation by
nitrogen jet injector provided.
Heavy duty trunions and bearing support the hollow shaft (agitator) and
The drive is provided by means of a motor through reduction gears chain
and sprocket.
Provision has also been made to insert four breaker bars inside the dryer shell for particles size reduction.
In special case, stationary scrapper blade can be provided to scrape the rotating agitator, for highly sticky materials.
OPERATION
Slurry / wet cake is charged through the charging door while keeping rotation of the agitator on. Vacuum is then
applied to the Dryer along with dust Catcher (mounted on the dryer) Condenser and receiver. Heating medium is
passed through the jacket and agitator. Vigorous evaporation of moisture takes place under vacuum. The vapour
passes through the bag filters of the dust catcher, goes into the condenser and the condensate is collected in the
receiver. Evaporation under high vacuum and low temperature results in faster recovery of maximum solvents.
Adequate provision has been provided to cater for fluctuations in steam pressure / temperature, in condenser
cooling water temperature, moisture content of feed etc.
Dry product is discharged via the discharge valve by reversing the agitator rotational direction to “discharge”
direction.
SALIENT FEATURES
1. Ideal for temperature sensitive materials. 2. Almost 100 per cent recovery of solvents. 3. Low energy consumption.
OPERATING CONDITIONS
Vacuum : Upto even 0.6 torr
Heating temperature : 30ᵒ to 300ᵒC
CAPACITY RANGES
Gross Capacity : From 500 ltrs. to 10000 ltrs.
Charging Capacity : 40 to 60% of Gross Capacity depending on the nature of the products
Dombivali
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