VINAMILK 24 11 03

-Air distributor designed for centrifugal as well as nozzle atomizer Uniform air distribution.. Designed for nozzle or centrifugal atomization and fines return.. -Optimized air flow in t

Modern Types of Spray Drying Plants for the

Dairy & Food Industry

One-stage Drying (1CSD)

K64 KØ 2

-Drying of droplets in hot air

• Relation between air temperature, product temperature and drying timeTemperature

o C

1 2

5

1 Heat transfer to solids by convection.

2 Internal heat transfer.

3 Evaporation.

4 Internal diffusion of water vapour.

5 External mass transfer by convection.

100

500

200 300 400

End of drying

Air temperature

Product temperature

Start of drying

Typical temperature profile measured

in the drying chamber

Two-stage Drying (2CSD)

powder outlet

K64 KØ 5

-3-stage spray dryer with fines return

powder outlet

K64 KØ 6

-Spray bed dryer with fines return

K64 KØ 7

-Mollier diagram

Tall-form spray drying plant with bustle (TFDB) and external fluid bed

K64 KØ 9

-3-stage Conical Spray Dryer (3CSD)

7 External fluid bed

8 Fluid bed air supply systems

7

9

10

K64 KØ 10

-Indirect air heater

Liquid-coupled

heat exchanger

Process air inlet Fan Preheater Inspection door / Pressure relief valve

Combustion chamber

Concentric cylinders

Exhaust duct Recuperator

Burner Process air outlet Combustion air inlet Flue gas outlet

K64 KØ 11

-Air distributor designed for centrifugal

as well as nozzle atomizer

Uniform air distribution Designed for nozzle or centrifugal atomization and fines return.

Easy change of atomizer type.

K64 KØ 12

-Tall form computer flows

Optimized air flow in single-stage

spray drying plant with bottom outlet

K64 KØ 14

-Optimized air flow in three-stage

spray drying plant with bottom outlet

High thermal efficiency Agglomerated as well

as high bulk density powder

K64 KØ 15

-Optimized air flow in Spray Bed Dryer (SBD)

Centrifugal atomizer and pressure nozzle capability

Technical superior air distributor.

Inlet air

Inlet air Outlet air

K64 KØ 16

-Spray bed dryer with nozzle atomizer computer flow

Air distributor designed for centrifugal

as well as nozzle atomizer

Uniform air distribution Designed for nozzle or centrifugal atomization and fines return.

Easy change of atomizer type.

K64 KØ 18

-Air distributor with centrifugal atomizer

K64 KØ 19

-Centrifugal atomization

Centrifugal Atomizers

K64 KØ 21

-Atomizer wheel with nozzle inserts

K64 KØ 22

-HP nozzle atomizer

The HP nozzle atomizer

is flexible and unique, suitable for

agglomeration

Central nozzle

Product

Product Fines

Air distributor

Peripheral nozzle

K64 KØ 23

-Nozzle Atomizer in stand

K64 KØ 24

-• Is uncomplicated with regard to operation

capacity range)

K64 KØ 25

-Centrifugal atomizer

Advantages

Centrifugal atomizer

Disadvantages

mainly be influenced by number

of revolutions and to some extent by the wheel type

K64 KØ 26

-High pressure nozzle atomizer

Advantages

Particle size distribution is more narrow

compared to distribution from centrifugal atomized powder

Many possibilities of influencing the

atomization

Change of nozzle pressure

Change of nozzle set-up

Nozzle placement

Orientation of nozzles (direction of nozzles) Number of nozzles

K64 KØ 27

-High pressure nozzle atomizer

K64 KØ 28

-Feed System Nozzle and Centrifugal

steam

vacuum pump

concentrate heater

feed pump homogenizer

positive pump

CIP return

centrifugal atomizer

nozzle atomizer

feed pump

K64 KØ 29

-Principle of concentrate heater

K64 KØ 30

-Drying Chamber in hot room

K64 KØ 31

-Drying Chamber insulation principles

1 Basic insulation

2 Hot room

3 Double airgap solution

4 Airgap solution with Rockwool

Acces for person

-Insulation Panels

K64 KØ 33

-Spray Bed Dryer with air broom

K64 KØ 34

K64 KØ - page 37

Integrated fluid bed with central air duct

The weir in the powder outlet defines the average residence time of the powder.

For prevention of explosion risk, a rotary valve

will often be placed

in the powder outlet.

Features and functions for external fluid bed

Drying  Cooling

-Powder photo

Agglomerated powder Non-agglomerated powder

K64 KØ 39

-K64 KØ - page 40

Inlet mixed fluid bed (IMFB)

Back-mix enables you to handle more difficult products

K64 KØ - page 41

Fluid bed rewet agglomeration

Uniform and steady feed of powder

Uniform liquid distribution Nozzle set-up

Cyclone

Bag filter

Powder outlet

Pneumatic conveying

K64 KØ - page 42

Plant picture Milupa

K64 KØ - page 43

Rotaclean Filter

K64 KØ - page 44

Sanitary Flexible Connection

Flexible connection Clamp ring

Rubber band Duct

K64 KØ - page 45

Cleaning in Place - CIP

Control system

K64 KØ 46

-K64 KØ - page 47

Rebuilding of old Dryer