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 oC.
Absolute humidity ---
0.010 kg. /kg.
Cooling Design
---
Ambient
temperature -- 40
oC.
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 --- 45o 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,
. 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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