SPECIFICATION FOR SPRAY
DRYER - I
( 100 Kg. / HR.
evaporative capacity)
a.
Feed rate
(product) - 280 Kg. per hour. at
48 % T.S. and 80
oC, for
skimmed milk.
170
Kg. per hour. at 48 %
T.S. and 80 oC,
for whole milk.
b. Product
out 110 Kg. per
hour with 4%
moisture, ( SMP)
c. Design Basis
Plant Altitude 565
Mtr.
Barometric height 94.7
Pa (710 mm
Hg)
Ambient temperature 20
deg. C.
Absolute humidity 0.010 kg. /kg.
Cooling
Design
Ambient temperature 40
deg. C.
Absolute humidity 0.0252 kg. /kg.
D Source of heating
Main air
heater I. Steam
section. 20 oC TO
180 oC steam at
15 bar, total
load 105 kW.
620X620 FCE- 6ROWS,
II. Electric
section 180 oC to 225
o C total load
30 kW.
Air quantity
2200 kg / hr,
The electric
section should be
designed in five
banks, each bank
of 6 kW, with
a facility to
turning on or
off each bank
independently.
SFB,
AIR HEATER Capacity --
210 kg. / hr,
Temp.
duty-- 20 to 130 deg. C,
Steam
-- 8 bar / 16
bar
Max.
pressure drop across
heater --- 50 mmwc
Heater
type is fin-coil.
with MS tubes
and aluminum fins
Air
velocity available is 2.5 to 4
Mtr. per sec,
VFB,
AIR HEATER Capacity --
75 kg. / hr,
Temp.
duty-- 20 to 130 deg. C,
Steam
-- 8 bar / 16
bar
Max.
pressure drop across
heater --- 50 mmwc
Heater
type is fin-coil.
with MS tubes
and aluminum fins
Air
velocity available is 2.5 to 4
Mtr. per sec,
e. Chamber --
diameter---1.391 Mtr. x2 mm. Height
---- 4.981 Mtr.
Bustle diameter
2.226 Mtr. Straight portion
of bustle -- 390 mm.
Bustle angle ---
45deg.C Top dia
--- 803 mm
dia, X 45 deg.
Air inlet
---- 200 mm. dia, Air exhaust
--- 110 mm. dia x 4 Nos.
SFB, dia ---505 mm, height --
700 + 700 mm,
out let
-- 150 mm.
f. Main
exhaust cyclone ---
1 Nos.
Diameter -------
944 mm. Dia X
cone angle --- 10
deg. side,
Size of
inlet--- 168 X
299 mm.
Size of
outlet--- 266 Dia,
vortex --
596 Dia X 376
Dia X 669
height,
g. Fluid bed
--- 1Nos. ( VFVE
- 0.3 -0.3 -2)
Feed rate
to fluid bed ---
Face area
---- 0.32 Mtr. sq.
Motor - 600watt.
h. BAG HOUSE
--- 1 Nos.
Dia ---1.5
Mtr. ID
Inlet ---
170 X 480
mmFilter
Bags, ---23
nos. of 150
Dia, X 1500
long,
i.
Air supply fan---
3000 kg.
per hour at
550mm wg. Air inlet
temp. -- 50 oC,
Air density
0.9826,
J Air exhaust
fan --
3000
kg. per
hour at 550 mm wg, Air inlet
temp. -- 100 oC,
Air
density 0.85,
k. Root blower : AC -43
, of key
compressors
100 kg. per
hour at 0.9
kg, pressure.
Air
temp. 11 oC,
l. AIR FILTER Efficiency --
98%,
Air velocity
required 2.5 to 4 Mt.,
per sec.
Material of
construction of filter
frame -- S.S.
Material of
construction of filter
-- suitable food
grade
Size of
filter ---610 X 610 mm,
Max. pressure
drop across the
filter 50 mm wc. in
dirty condition
Ax
. working temp. --
80 o C.
m. Dehumidifiers
VFB air
dehumidifiers Capacity 340 kg .
per hr.
Pressure drop
across entire dehumidifier
max. 75 mmwc,
Air velocity
available is 2.5 to 4 Mtr.
per sec
Cooling section
-- cooling temp.
duty 40 to
7 deg. C at
50% inlet humidity
(approx. cooling
load of 7 kW )
Medium is
chilled water at 1 deg. C
Construction is fin
-coil type with
SS tubes &
Aluminum fins
Surface area
approx. 690 sq. Mtr.
Heating section Heating temp.
duty 7 to 11 deg. C.
Medium
is hot water
/ candancate at
40 deg. C.
Construction is fin
-coil type with MS
tubes & Aluminum
fins
Air velocity
available is 2.5
to 4 Mtr. per
sec.
n.
Atomizing spray nozzle
assembly
Delavan Mini - SDX.
High pressure
pump -- Capacity
200 lph.
Delivery pressure
-- 350 bar.
Product Viscosity
-- 120 cp
o.
Vibratory sifter Capacity ---
110 kg. per
hr.
p. Product feed
pump to hi - pr.
Pump Capacity --200
kg.- per hr.
Head
-- 40
Mtr.
q. Product
heater Capacity --200
kg.- per hr.
tube in
tube type.
r. Duplex
filter for concentrate.
Pneumatic hammers.
Dampers.
s. INSTRUMENTATION ---
|
sr./
|
Location
|
Instrument Type
|
Range
|
Function
|
|
1.
|
After supply fan
|
Pressure
|
0 to 750 mm wg.
|
Control supply pressure
|
|
2
|
After dryer air
heater
|
Temperature
|
0 to 300 deg.c
|
Control dryer inlet temperature
|
|
3
|
Lower part of dryer
|
Pressure
|
-100 to 100 mmwg.
|
Control vacuum in dryer
|
|
4
|
Dryer outlet duct
|
Temperature
|
0 to300 deg.C
|
Control outlet temperature
|
|
5
|
Inlet to cyclone w nxt
|
Pressure
|
-150 to 0 mm wg.
|
Indicate cyclone differential
|
|
6
|
Outlet of cyclone w prv
|
Pressure
|
- 350 to 0 mm wg.
|
Indicate cyclone differential
|
|
7
|
Outlet of bag house w prv
|
Pressure
|
-750 to 0 mm wg.
|
Indicate bag house differential
|
|
8
|
Outlet of bag house
|
Temperature
|
0 to 200 deg. C
|
Indicate temperature
|
|
9
|
Feed balance tank
|
Level
|
0 to height of tank
|
Control level and warnings
|
|
10
|
After product heater
|
Temperature
|
0 to 150 deg. C
|
Control product
temperature
|
|
11
|
Before product filter w nxt
|
Pressure
|
0 to 10 bar
|
Indicate filter different + con
|
|
12
|
After product filter
|
Pressure
|
0 to 10 bar
|
Indicate stofling pressure + con
|
|
13
|
After static fluid bed heater
|
Temperature
|
0 to 200 deg. C
|
Control inlet Temperature
|
|
14
|
Below static fluid bed plate
|
Pressure
|
- 50 to 300 mm wg.
|
Indicate fluid bed Pressure
|
|
15
|
Above static fluid bed plate
|
Pressure
|
- 50 to 300 mm wg.
|
Indicate fluid bed level
|
|
16
|
Above static fluid bed plate
|
Temperature
|
0 to 200 deg. C
|
Indicate fluid bed
powder temperature
|
|
17
|
After external fluid bed heater
|
Temperature
|
0 to 200 deg. C
|
Control inlet Temperature
|
|
18
|
Below external
fluid bed plate
|
Pressure
|
- 50 to 200 mm wg.
|
Indicate fluid bed Pressure
|
|
19
|
After external fluid bed heater
|
Temperature
|
0 to 100 deg. C
|
Control inlet Temperature
|
|
20
|
Below external
fluid bed plate
|
Pressure
|
-50 to 200 mm wg.
|
Indicate fluid bed Pressure
|
|
21
|
External fluid bed exhaust duct
|
Temperature
|
0 to 100 deg. C
|
Indication of VFB vacuum
|
|
22
|
Below external fluid bed
plate
|
Pressure
|
- 50 to 200 mm wg.
|
Indication of VFB vacuum
|
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