rotary steam tube bundle dryer
ROTARY STEAM
TUBE BUNDLE
DRYER
The specialised design of this equipment offers large interior drying
surfaces and optimal heat transfer rates between the thermal fluid
and the product.
In comparison with conventional rotary drums, the great advantage
of the tube bundle dryer consists in the fact that no heating gas
comes in direct contact with the product. Nearly all the steam
expelled from the dryer consists of water evaporated from the
product. This greatly reduces the flow of exhaust fumes and therefore
investment in gas purifying equipment. This aspect is even more
relevant when dealing with particularly odorous or harmful components
for which an expensive wet gas washing/treatment is necessary.
Drying
Working principle:
The tube bundle dryer is a rotary drum internally equipped with
steam or thermal oil heated tubes, so hot gas circulation is not
required. This results in a very high thermal efficiency and a
minimal flow of exhaust steam needing to be treated. It is especially
suitable for large flows of products which require medium to long
residence times. Highly flexible, the tube bundle dryer easily
adapts to changes in operation and is of very robust construction.
Excellent product treatment, uniform drying without lumps.
Optimal heat transfer factor
between thermal fluid and product.
Minimal treatment of exhaust
vapors. Engineered to prevent
condensation, adherence, lumps
and shearing of the product.
Product treatment:
• Product homogeneity: thanks to its proper distribution and
mixture of the product, to the plug flow fashion conveying, as
well as to the absence of dead zones, the residence time is the
same for all particles.
• Good product quality: no lumps are formed thanks to the careful
treatment inside the cooler. Tubes and shell move synchronous
and the product turns under gravity, avoiding shear forces
between paddles and stator which usually occur in other types
of tube bundle dryers, affecting the final product quality.
Typical applications:
Powdery to fibrous bulk products,
sludge, special minerals, filter cakes,
etc.
Food Industry
Products derived from
corn, wheat, rice,
soybeans and cereals
BASIC LAYOUT OF A TUBE BUNDLE DRYER DRUM:
2
1
1. Tubes
2. Steam chamber
TUBE BUNDLE DRYER:
7
6
5
• Optimised design: these equipments are designed and
engineered to prevent condensation and adherence of the
product to the walls.
8
1
3
9
Reduction of operating costs:
• Adjusted thermal consumption: easy recovery of most of the
steaming energy from condensation and solvents.
• Reduced exhaust vapors treatment costs: its design reduces
significantly the exhaust vapors treatment costs.
• Robustness and long service life: engineered to reduce tension
within the equipment
• Adaptability: the design of each tube bundle dryer is
customised to fit the product and customer’s needs.
• Easy to maintain: the voluminous steam chamber is fully
accessible, making maintenance or repairs easier.
2
4
1.
2.
3.
4.
5.
Product feeding station
Dryer
Tubes
Product outlet
Steam outlet
6.
7.
8.
9.
Condenser
Exhaust ventilator
Recovery of condensate
Heat transfer medium
inlet and outlet
FREQUENT COMBINATIONS:
Flash-Cooler,
Fluidised
Bed
Cooler,
Multi-
Chamber Cooler, etc.
INGETECSA · Ingeniería y Técnica del Secado s.a. · Roger de Flor, 49-51 · 08013 Barcelona · Spain · Tel. +34 932 466 544 · Fax +34 932 462 107
ingetecsa@ingetecsa.com · www.ingetecsa.com
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