Mumbai, Maharashtra, India
Our Products
FUNCTIONUsed mainly for drying of high grade, temperature and oxygen sensitive products. Highly suitable for drying hygroscopic substances, which are dried to very low residual moisture, content level. Frequently vacuum drying cabinets are the sole possibility for drying lumpy, glutinous products or products of low pomposity.
SALIENT FEATURESBodies may be of cylindrical or rectangular cross section. Both shelves and body are heated (the body to prevent internal condensation) with controlled circulation of hot water, steam or dia thermic fluid. Vacuum is drawn through large diameter ducts to minimize pressure drops and produce minimum working pressures. Both rotary and static dryers can be supplied with the following Optional ancillaries.
Vacuum Tray dryer is the most commonly used batch dryer. They are box-shaped and loaded and unloaded via a door (two doors on the larger models). Inside are several heating plates mounted one above the other on which the product is placed in trays. The bottoms of both heating plates and trays should be as smooth as possible to permit optimal heat transfer between plates and product. The medium flowing through the heating plates is water, steam or thermal oil.
Features
Technical Specifications
| Model | VTD 6 | VTD 12 | VTD 18 | VTD 24 | VTD 36 | VTD 48 | VTD 96 |
| Capacity in Trays | 6 | 12 | 18 | 24 | 36 | 48 | 96 |
| Number of Shelves | 6 | 6 | 6 | 8 | 12 | 16 | 32 |
| Dummy Shelf | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Trays Per Shelf | 1 | 2 | 3 | 3 | 3 | 3 | 3 |
Double Cone or Rotocone Vacuum Dryer
Double Cone Vacuum Dryer operates under the principle of controlled and uniform drying under vacuum at low temperatures.
Uses
Is suited best for drying of free flowing non-sticky wet powder or crystals.
Advantages
Drying time much faster than that of conventional Tray Dryer Saves production time.
Uniform drying under controlled atmosphere at low temperatureGood product quality free of oxides and dust with recovery of solvent.
Less manpower required Low drying cost.
Perfectly designed drive system - Saves power while drying.
Balanced movement - No foundation required.
Motorized Lump Breaker can be provided.
FUNCTION
Used mainly for drying of high grade, temperature and oxygen sensitive products. Highly suitable for drying hygroscopic substances, which are dried to very low residual moisture, content level. Frequently vacuum drying cabinets are the sole possibility for drying lumpy, glutinous products or products of low pomposity.
CAPACITY
Standard models range from 4 trays to 48 trays.
SALIENT FEATURES
Bodies may be of cylindrical or rectangular cross section. Both shelves and body are heated (the body to prevent internal condensation) with controlled circulation of hot water, steam or dia thermic fluid. Vacuum is drawn through large diameter ducts to minimize pressure drops and produce minimum working pressures. Both rotary and static dryers can be supplied with the following Optional ancillaries.
Vacuum Tray dryeris the most commonly used batch dryer. They are box-shaped and loaded and unloaded via a door (two doors on the larger models). Inside are several heating plates mounted one above the other on which the product is placed in trays. The bottoms of both heating plates and trays should be as smooth as possible to permit optimal heat transfer between plates and product. The medium flowing through the heating plates is water, steam or thermal oil.
The distance between the heating plates is determined primarily by the surface loading and the foaming of the product. To void retrograde condensation the cabinet walls are indirectly preheated by the heating plates. Next, the product is introduced and heated at atmospheric pressure. Only after all individual product trays reach the same temperature the cabinet is evacuated and drying can start. The preheating phase is very important in order that the drying curve and the foaming of the product is identical throughout the cabinet. During the main drying phase the vacuum is in the range of 40 to 80 mbar abs and in the final drying phase vacuums of only few mbar abs are reached. Heating temperatures are normally in the range between 800C and 1100C. Depending on product and surface load, drying takes from a few hours to 1 to 2 days. For some products the vacuum and temperature profiles are automatically controlled in order to prevent a pass over of the critical product temperature.
factor in the design of drying cabinet systems. If for example vigorous foaming of the product is desired, evacuation to the operational vacuum level must take place very quickly. Vapors produced during drying are taken out direct, or via a steam jet compressor to a surface condenser in which the vapors condensate. The non-condensable vapors are extracted by the vacuum system.
On completion of the drying, the product can be cooled by circulating of cooling water through the heating plates.
Features:
'RIDDHI' - introduces one of the finest "FLUID BED DRYER" unit providing compactness and conceptional principle of Air Fluidization for drying granules, crystalline, coarse or similar materials in Pharmaceuticals, Fine Chemicals, Dyes, Food & Allied Industries.
The basic concept of the Fluid Bed System begins with a simple Drying unit to which several different optional packages may be added for conversion to a granulation or coater.
Process control system ranges from standard pneumatic logic to sophisticated computerized controls. Air handling equipments can vary from the basic compact pre-filter and heater to the system, which provides complete control of the condition of the processing air. This higher technology of process involved many modern technologies and to match that RIDDHI introducing conventional Fluid Bed Dryer.
ADVANTAGES :
The conventional drying method for drying products in tray dryers is rather inadequate & troublesome. They also occupy large space & have very high & uneven drying times and also involved high labour input. To over come this problem RIDDHI made Fluid Bed Dryer which is the simple solution to dry the products.
SUITABILITIES :
This compact unit is suitable for drying granular, crystalline, coarse or similar materials in Pharmaceuticals, Dryer, Fine Chemicals & Food & Allied Industries. It is also possible to dry fine crystal or coarse materials in fluid bed dryers.
DESCRIPTION :
Latest improvement in design makes this unit truly GMP model for Pharmaceuticals industries & versatile in operation for other industries like food, dyestuff, chemicals & polymer industry. In GMP models, all the contact parts made out of S.S.304 / 316 material & are provided with isolated panel board. However with standard Fluid Bed Dryers for product containers, retarding chamber are made out of stainless steel materials S.S. 304 only & other parts from mild steel sheet.
BATCH SIZE
Batch size indicates weights of wet products (inclusive of moisture). Our Model RDFD-30 can take batch size of 30 to 40 Kgs. of wet material. Similarly model RDFD-120 can process 120 to 135 Kgs. of wet material per batch. The weight of materials to be loaded per batch depends upon the bulk density of wet material.
OPERATION :
The wet material is introduced into the dryer as a batch of material in a product container which is provided with air distributor plate & clutch weave. Induced draught is created by the blower & fresh air is sucked into the unit. After filteration, clean air passes through the heating elements. This hot air then passes through the product containers, creating turbulance in the products & hence the product moves up and down known as Fluidization in the product container. Due to this process, the heat transfer is quick and the product is dried fast without appreciable loss of heat. Filter bags prevent particles escaping from the dryer.
HEATING:
Fluid Bed Dryer can be supplied in electric heating, steam heating or hot water circulation systems or gas heating system on demand. Electrically heated dryers are provided with electrical heating elements and are suitable to raise air temperatures by about 750 C (i.e from 300 C to 750 C). Similarly steam operated dryers are provided with steam radiator suitable to raise air temperature about 600 C to 750 C depending upon pressure of steam. Generally dryers bigger than RDFD- 60 are incorporated with steam heating system as it is more economical.
DRYING TIME :
The drying time depends upon various factors such as physical properties of material, moisture content, type of moisture (free moisture or water of crystallization), drying temperature etc. The crystalline products can be dried faster than amorphous product containing same percentage of moisture at the same temperature. Generally pharmaceutical granules or crystals containing free moisture of about 20% to 25% can be easily dried in about 30 to 40 minutes at a temperature of about 750C. Certain crystalline materials containing about 40% of moisture can be dried in Fluid Bed Dryer within 35 to 45 minutes.
IMPORTANT :
In case the product contains solvents or inflammable substances, it is essential that the Dryer is steam operated &provided with flame proof motor.
Motor :
The dryer will be provided with with suitable Remi/Hindustan/Sabar or standard ISI make motor of 2800 RPM
FILTERATION:
Single stage filteration of 20 microns PP cloth filter, P.P. filter bag for exhaust air, also multi stage filteration can be given on demand. Positive Earthing Arrangement, explosion flap are given as a part of standard features.
Control Panel:
Pre-wired control panel indicate Digital Timer, Digital Temperature Indicator cum controller(Inlet), Digital Temp. Indicator (Outlet), Sensor, Star-Delta Starter with relay, Indicating Lamps, MCBs, Amp. Meter cum Volt Meter, Selector switch etc.
SPECIAL FEATURES :
You will have to provide following :
Additional Information:
Payment Terms : L/C, T/T
Packaging Details : SEA WORTHY PACKING
Delivery Time : 4-6 WEEKS
