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Vacuum Try Dryer (VTD)
Vacuum Try Dryer (VTD)
A Vacuum Tray Dryer works under vacuum
conditions on the conduction
principle. Inside the dryer are several shelves having trays on which the products are
placed. The top most shelf is a dummy shelf placed there to ensure proper heating and to
prevent the dried powder from escaping into the solvent extraction system. The shelves
are constructed hollow with baffles cum stiffeners placed in between shelves. Every
shelf has an inlet and outlet nozzle and is connected to an inlet and outlet header
through these nozzles.
A hot medium reaches the shelf through the inlet
header and flows through the
shelves in a uniformly zig-zag pattern ensuring faster heat transfer to the surface. This in
tam heats up the trays on the shelves. The hot medium flows out from the shelf through the
outlet header.
The inlet and outlet headers are designed in such
a way that the now of the
heating medium is equally distributed into each of the shelves. The dryer chamber is
constructed from heavy-duty plates to prevent the plates from buckling during th vacuum
operation. Additional limpet coils are provided in order to further stiffen the body and to
pass on the hot medium. The chamber is provided with a heavy door and adequate locking
arrangement. The dryer chamber is connected to a shell & tube by means of a vapour column to
a Heat Exchanger. This in turn is connected to a condensate receiver.
Vacuum is applied to the condensate receiver.
Vapour evolved during the drying
process collects in the receiver after it is cooled in the heat exchanger. The vapour to be
cooled is passed through the tube side of the Heat Exchanger, while cooling water is passed
through the shell side. A cooling coil in the condensate receiver cools any vapours entering
the receiver before it goes into the vacuum pump. The condensate receiver is connected to a
vacuum trap to make sure that any uncooled vapours from the receiver get trapped thus
minimising the vapour content entering the vacuum pump.
Technical Specification
| Capacity | 12 | 24 | 48 | 96 | |
|---|---|---|---|---|---|
| Tray Size | 800 X 400 X 50mm in SS 304/316 quality | ||||
| No.of Shelves | 6+1 | 8+1 | 16+1 | 16+1 | |
| Tray / shelves | 2 | 3 | 3 | 6 | |
| Chamber thickness | 6 | 6 | 6 | 8 | |
| Condenser(Sq.m) | 1.1 | 2 | 3 | 5 | |
| Receiver (Ltrs.) | 50 | 80 | 100 | 150 | |
Head Office
113, Alpine Industrial Estate, Marol Military Road, Andheri (East), Mumbai - 400 059, Maharashtra, India.
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+91 8169061250
+91 9137581700
+91-9322217611
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