FLUIDISED BED

Ingetecsa’s static fluidised Beds are engineered to produce high evaporation rates with relatively short residence times. Since there are no moving parts and particles don’t touch each other, an extremely careful mechanical treatment can be ensured. This equipment offers significant process flexbility and adaptability.

Our tailor-made fluidised beds allow for a variety of arrangements and combinations with other equipment. According to the customer’s requirements, Ingetecsa can supply a wide range of fluidised bed combinations: air-tight, expanded, self-emptying, ATEX, solvent-recovering, with internal exchangers, multi-stage, equipped with combined drying and cooling areas, among others.

Drying

Cooling

Working principle:A fluidised bed is formed when a cross flow of hot gases is pressurised through a product layer resulting in its fluidisation. The drying/cooling air flows in an ascending direction through a grid or bored plate which equalises speed and pressure. The particles or granules are fluidised and drop on the grid/plate. The particles float on an air cushion and the product behaves like a boiling liquid.

The product entering the fluidisation area displaces the product already on the bed, until it overflows a final retention. The high turbulence around the fluidised particles prevents contact among them. Thus, and in spite of the high swirling agitation, this mechanical treatment is very gentle.

Typical applications: Bulk fluid products: from fine powders to thick grain or short fibres which require a short to medium residence time.

PFD OPERATION MODE OF A FLUIDISED BED DRYER/COOLER:

SOME DRYING PROCESS APPLICATIONS:

OPEN-CIRCUIT DRYING AND COOLING:

FLUIDISED BED WITH INTERNAL EXCHANGERS:

FREQUENT COMBINATIONS:

Cyclones, Flash Dryers, Rotary Drums, others.

1 - Product feeding

2 – Product discharge

3 – Dust discharge

4 - Primary air filter

5 - Impeller

1 - Centrifuge feeding

2 - Centrifuge

3 - Feeding screw

4 – Product discharge

5 - Primary air filter

6 - Impeller

7- Air heater

8 - Fluidised bed

9 - Internal exchanger

10 - Dust collector

11 – Dust discharge

12 - Exhaust fan

6- Air heater

7 - Fluidised bed

8 - Dust collector

9 - Exhaust ventilator

1

78

9

3

2

65

5

4

4 6

3

1

11

10

12

8

9

2

56

4

7

Sugar

Maize, wheat, rice, soya and cereal products

Potatoes, vegetables and fruit

Pulps and fibres

Intermediate and basic chemical industries

Polymers

Resins and ureas

Dicalcium/Monocalcium phosphate

Fertilizers

Biotechnology, cosmetic and pharmaceutical products, detergents

Metallurgy

Mining industry

Food Industry

Chemical Industry

Metallurgy and Mining

Extremely careful mechanical treatment of the product. High evaporation rates with relatively short residence times. Optional drying and cooling areas in the same equipment.

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