Ultra Drytech Engineering Limited

Rotary vacuum paddle dryer is a jacketed cylindrical vessel with a large diameter hollow shaft. Attached to the shaft are hollow paddles 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 surfaces for protracted periods 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 bearings 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 particle size reduciton.

In special cases, stationary scraper 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 take place under vacuum. The vapor passes through the bag filters of the dust catcher, rotary paddle dryer machine, rotary paddle dryers exporters, rotary vacuum paddle dryer, vacuum paddle dryer manufacturers 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 the reversing the agitator rotational direction to "discharge" direction.

Salient Features:

• Ideal for temperature sensitive materials.
• Almost 100 per cent recovery of solvents.
• Low energy consumption.

Operating Conditions:

• Vacuum: up to even 0. 6 torr
• Heating temperature: 30o to 300 oc

Capacity Range:

• Gross capacity: from 500 ltrs. To 25000 ltrs.
• Charging capacity: 40 to 60% of gross capacity depending on the nature of the products.

We put forth for our clients Rotary Vacuum Paddle Dryers, industrial spin flash dryer, spin flash dryers suppliers mumbai, sfd for pharma applications, which are easy to use and manufactured in compliance with defined industry standards. These are sturdy, wear & tear resistant and require negligible maintenance. We offer these in various specifications to cater to diverse requirements of our clients.

Other details:

• These dryers are jacketed cylindrical vessels that come with a large diameter hollow shaft
• Hollow paddles are provided with shafts, which have specially designed scraper blades
• These scraper blades scrape the entire internal surface of the dryer and constantly rotate & move the material
• This avoid the possibility of material remaining in contact with hot surfaces for long time period

Sample availability: Yes

Spin flash drying system has been introduced in the country in a big way by ude. It is a continuous bulk drying system which helps in energy savings, low labour deployment, sfd for pharma application exporter, agitated nutsche filter suppliers, uniform quality products, low space requirement and minimal dusting due to negative pressures in the system during drying.

The design of the spin flash drying system depends, inter alia, upon product characteristics, capacity and other specific application requirements. Consequently every system is custom designed.However, the basic configuration is as follows:

Hot air generator:
Clean and dry atmospheric air is heated by any of the following means:

• steam
• indirect oil firing
• indirect gas firing
• electrical heater
• thermic oil system

Feeder Unit:
A feeder unit incorporating a lump breaker and screw feeder is provided for continuous dosing of the dryer at a constant rate. The design of the lump breaker and screw depends on the characteristics of the material to be fed i. E. Wet, pasty, lumpy, sticky, caked etc.

Drying Chamber
Bottom section: The configuration of the bottom section which is provided with a pulverizer and agitator, differs widely depending on the characteristics, properties and behavior of the material to be dried. Hot air entry at the bottom is arranged in such a manner that it receives a spinning motion as it rises in the drying chamber. Also provided in the bottom section is a nozzle connected to the feeder unit, and the wet cake entering the drying chamber is flash dried to a great extent, and most of the particles immediately get air-borne and move with the hot air, spinning upwards. Agglomerates, while going down are broken up by the shearing action of the agitator and become air borne. Larger particles fall into the pulveriser and the particle size is reduced. They also are then picked up by the rising stream of hot air.
Middle section: This consists of a cylindrical section where the particle laden hot air rises in a spinning direction and the particles get dried. For products of a sticky nature a special wall scraper is provided.
Top section: This section which is also cylindrical has a classifier through which dry particles of only the desired micron size can pass. Larger particles again go down where they are further reduced in size to enable them to transit the classifier.

Power separation section: From the outlet of the drying chamber the dry powder along with hot air passes into a cyclone or bag filter or a combination of both. Dry powder is separated from air and is collected in a dry product bin provided with a motor driven air lock rotary discharge valve. Powder recovery is almost 100 per cent.

Exhaust fan: an exhaust fan is connected with the powder separation section by suitable ducting. It draws the solids along with the moisture laden air from the drying chamber and through the powder separation section and discharges the moisture-laden air into the atmosphere.

We provide our clients with Spin Flash Drying Systems, industrial spin flash dryer, spin flash dryers suppliers mumbai, sfd for pharma applications, sfd for pharma application exporter, agitated nutsche filter suppliers, agitated nutsche filter exporters which are used for various applications in pharmaceutical industry. These systems are simple to use and have gained acclamation for high performance and long functional life. These are manufactured using modern technology to ensure energy efficiency.

Applications include:

• Clean room operations
• Drying through heated nitrogen
• Nitrogen/ solvent recovery/recycling arrangement
• Skid mounted
• Complete S.S. / S.S. cladded construction

We offer our clients Agitated Nutsche Filters, rotary paddle dryer machine, rotary paddle dryers exporters, which are used to separate liquid from slurry through mechanical means. To obtain dry products, remaining moisture can be removed by evaporation. These precisely engineered filters are robust in construction and are appreciated for low power consumption.

Other details:

• These filters consist 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 upon process/customer requirements
• By means of a perforated plate, provided with suitable filter cloth or porous cloth, the vessel is divided into two compartments
• An agitator of unique design is provided inside the vessel
• By manipulating movement in vertical and rotational directions simultaneously, the agitator can perform various activities with the use of push buttons switch/PLC
• The filter is capable of operating under pressure or vacuum or a combination of both
• The filter precludes any possibility of atmospheric pollution from toxic fumes/ obnoxious smell of slurry by working as a completely closed system

Operation:

• Slurry is fed into the top compartment from where filtrate passes into the lower chamber en route to receiver
• Solids take the shape of a cake of uniform thickness after getting deposited on the filtering media in the top compartment
• Solid content in the slurry is pushed upwards by the agitator by keeping it under suspension till most of the filtrate passes through the filter bed
• This reduces time and increases productivity
• By smoothering the top surface of the cake, agitator seals the cracks in the cake, which develop after maximum possible filtrate has passed through
• 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 separation of solvent/mother liquor, sometimes it is necessary to wash the cake
• The entire cake can be re-slurried and agitated after adding wash liquor on the cake, so that all the particles forming the cake can be exposed to wash liquor and be thoroughly washed. This enhances the quality of the finished products
• By rotating and lowering agitator in the discharge direction, the cake can be discharged through a quick opening side discharge door after washing and removal of wash liquor. No manual handling is required

Advantages:

• 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 little training
• Proper washing of cake due to re-slurrying resulting in thorough particulate washing. This reduces numbers of washes and volume of wash liquor
• Reaction filtration, washing and distillation is possible in the same equipment. In some cases, drying operation can also be carried out in the same equipment.
• Heat transfer surface can be provided with the help 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 applications with high standard of particulate purity

We also offer Agitated Nutsche Filters, rotary vacuum paddle dryer, vacuum paddle dryer manufacturers, which are used to separate liquid from slurry through mechanical means. To obtain dry products, remaining moisture can be removed by evaporation. These precisely engineered filters are robust in construction and are appreciated for low power consumption. Other details:

• These filters consist 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 upon process/customer requirements
• By means of a perforated plate, provided with suitable filter cloth or porous cloth, the vessel is divided into two compartments
• An agitator of unique design is provided inside the vessel
• By manipulating movement in vertical and rotational directions simultaneously, the agitator can perform various activities with the use of push buttons switch/PLC
• The filter is capable of operating under pressure or vacuum or a combination of both
• The filter precludes any possibility of atmospheric pollution from toxic fumes/ obnoxious smell of slurry by working as a completely closed system

Operation:

• Slurry is fed into the top compartment from where filtrate passes into the lower chamber en route to receiver
• Solids take the shape of a cake of uniform thickness after getting deposited on the filtering media in the top compartment
• Solid content in the slurry is pushed upwards by the agitator by keeping it under suspension till most of the filtrate passes through the filter bed
• This reduces time and increases productivity
• By smothering the top surface of the cake, agitator seals the cracks in the cake, which develops after maximum possible filtrate has passed through
• 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 separation of solvent/mother liquor, sometimes it is necessary to wash the cake
• The entire cake can be re-slurried and agitated after adding wash liquor on the cake, so that all the particles forming the cake can be exposed to wash liquor and be thoroughly washed. This enhances the quality of the finished products
• By rotating and lowering agitator in the discharge direction, the cake can be discharged through a quick opening side discharge door after washing and removal of wash liquor. No manual handling is required

Advantages:

• 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 little training
• Proper washing of cake due to re-slurrying resulting in thorough particulate washing. This reduces numbers of washes and volume of wash liquor
• Reaction filtration, washing and distillation is possible in the same equipment. In some cases, drying operation can also be carried out in the same equipment.
• Heat transfer surface can be provided with the help 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 applications with high standard of particulate purity