How to calculate the Rotary Vacuum dryer design calculation – dimension of the rotary dryer ?
The information are as follows:
The material: wet – Name of material
The output: __ ton per hour
A：Drying intensity (__kg/m3h)
G1：Dry Material Production (__t/h)
V：Dry Space needed (m3)
W1：Initial Moisture Content ( ___%)
W2：Final Moisture Content (__%)
Rotary Vacuum Dryer design calculation represents RVD 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 scrap 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 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 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 arrangement 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 particle size reduction. In special cases, stationary scraper blade can be provided to scrap the rotating agitator, for highly sticky materials.
SALIENT FEATURES:-
a) Ideal for Temperature sensitive materials.
b) Almost 100 percent recovery of solvents.
C) Low energy consumption
OPERATION CONDITIONS:-
Vacuum : Upto even 0.6 torr
Heating Temperature : 30° to 300°C
CAPACITY RANGES:-
Gross Capacity : Fromm 100 ltrs. To 25000 ltrs.
Charging Capacity : 40 to 60% of Gross Capacity depending on the nature of the products.
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