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Multi
Column Distillation Plant
Description
Multi
column distilled water still is designed to produce sterile, pyrogen
free distilled water conforming to I.P. / B.P. specifications. The
still works on interstage heat exchange principle whereby the
distillate is produced at a fraction of the cost as compared to
single column stills. All contact parts are made out of AISI 316
quality and mirror polished.
Operation
Multi
column distilled water still works on interstage heat exchange
principle. The pre-heated feed water is fed to the first column where
it is heated by means of steam from the boiler. Due to heat exchange,
surface evaporation of the feed water takes place whereby a part of
the feed water is converted into steam. In the process the steam
itself condenses back to water. The steam with high velocity and
under pressure passes through a specially designed spiral which
creates a unique centrifugal force which removes impurities such as
pyrogens and exdotoxins which are blown out of the system. Condensing
vapor from the previous stage is used as heating vapour for the next
stage. The process is repeated through the last column, each column
working at a lower pressure and temperature than the previous one.
Due to the pressure difference between the columns, the energy
supplied to the first column is repeatedly re-used in the system.
Only the first column is heated using an external source of energy
and only the vapour from the last column is condensed with external
cooling water. Thus upto 70% energy is saved. Salient
Features
- 100%
pyrogen free distilled water conforming to I.P. / B.P.
specifications.
- High
initial cost but low operational cost.
- Saving
upto 70% of energy as compared to single column stills.
- Low
on maintenance as no moving parts except feed pump.
- The
unit can be operated at a higher steam pressure to get upto 50%
higher output.
- Automatic
dumping of sub-standard distillate.
- Low
level controls for feed water.
- Conductivity
meter to continuously monitor the quality of final distillate.
Scope
of Supply
- S.S.
316 quality multi-stage pump for Feed water, max. pressure of
10kg/cm2
- S.S.
304 Centrifugal pump for cooling water.
- S.S.
316 quality Surge tank with level switch to maintain the level of
feed water.
- S.S.
316 quality pneumatic three way valve for automatic dumping of
sub-standard distillate.
- S.S.
304 stand instead of mild steel stand.
- Fully
automatic operation, controlled through a specially designed S.S.
electronic panel board with self regulating sensors to keep each of
the operating parameters within the pre-set limits, hence no skilled
labour required to operate the plant.
- Magnetic
level switch in the first column to maintain the level of feed water
in the column.
- Pressure
switch to monitor the pressure of feed water.
- Pressure
gauges, safety valve, rotameters etc.
*No
extra cost for the surge tank and S.S. stand.
Optional
Accessories If Required
- S.S.
Housing filter for filtration of feed water.
- Diaphragm
steam pressure reducing valve.
- PLC
based control panel.
Technical
Specifications
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Material
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All
contact parts are made out of AISI 316 quality. All tubing is
seamless
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Sealant
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P.T.F.E.
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Distillate
Quality
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As
per I.P. / B.P. specifications
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Distillate
Temp.
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Approx.
95°C
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Feed
Water Quality
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De-Ionized
mineral water with a max. conductivity of 5 micro Siemens / cm2
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Feed
Water Pressure
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1kg/cm2
higher than the boiler steam pressure
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Cooling
Water
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Normal
tap water, hardness less than 90 PPM of CACO
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Steam
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Saturated
dry, free from oil, vapours and other impurities
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Electricals
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440
V, 3Phase, 50Hz Max. Load: 5k.w. approx.
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Model
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Distilled
Water Output (ltr./Hr.)
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Steam
consumption (kg./Hr.)
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D.M.
Water consumption (Feed water ltr./Hr.)
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Cooling
water consumption (ltr./Hr.)
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Dimensions
in mm
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Ltrs/Columns
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Steam
Pressure (kg/cm2)
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Steam
Pressure (kg/cm2)
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Steam
Pressure (kg/cm2)
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Steam
Pressure (kg/cm2)
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Length.
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Width
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Ht.
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3
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4
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5
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6
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3
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4
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5
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6
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3
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4
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5
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6
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3
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4
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5
|
6
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150/4
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150
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180
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200
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230
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49
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60
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70
|
80
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171
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206
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240
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265
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130
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170
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200
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235
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1880
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870
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3030
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300/4
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300
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350
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400
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450
|
96
|
121
|
145
|
166
|
346
|
415
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481
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530
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300
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380
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400
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460
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1980
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975
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3050
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500/5
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500
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600
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700
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750
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130
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160
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192
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220
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575
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692
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795
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890
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250
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325
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395
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440
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2630
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975
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3960
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1000/5
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1000
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1200
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1400
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1550
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240
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300
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355
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455
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1150
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1390
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1600
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1955
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900
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1000
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1100
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1250
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3025
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2500
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3975
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