 ABRIDGEMENT ON PROJECTS EXECUTED
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Dr.
REDDY'S LABORATORIES LIMITED
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| 1. |
Dr.
REDDY'S LABORATORIES
LIMITED, Mirylaguda.
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Project
: Steam conveying
system for triple
effective evaporation
system.
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Scope
of work :
Our scope of
work involves
design, detailing,
preparation of
pipe line layout,
supply of equipment,
work supervision,
erection of equipment,
pipe line laying,
commissioning
and handing over
the system as
a whole in running
condition.
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Codes
used : IBR 1965,
ASME Section
VIII, Division
1, BIS and Good
Engineering Practice
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Description
: Preparation
of Process flow
diagram, design
and detailing
of all equipments,
as mentioned
above as per
the respective
design codes,
preparation of
bill of quantities
for pipes, plates,
valves, etc.
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| 2. |
Dr.
REDDY'S LABORATORIES
LIMITED, Unit
- IV, Jeedimetla
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Project
: 8TPH Boiler
and High &
Low pressure
Steam pipeline
supply, fabrication,
erection &
commissioning
on turnkey basis.
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Scope
of work :
Our scope of
work involves
design, detailing,
preparation of
pipe line layout,
supply of equipment,
work supervision,
erection of equipment,
pipe line laying,
commissioning
and handing over
the system as
a whole in running
condition.
|
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Codes
used :
IBR 1965, ASME
Section VIII,
Division 1, BIS
and Good Engineering
Practice
|
| |
Description
: Preparation
of Process flow
diagram, design
and detailing
of all equipments,
as mentioned
above as per
the respective
design codes,
preparation of
bill of quantities
for pipes, plates,
valves, etc.
|
| 3. |
Dr.
REDDY'S LABORATORIES
LIMITED, Bulk Active
Unit - II, Bollaram |
|
Project
: Effluent Recycle
Plant (ERP)
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Scope of
work :
Design, detail
engineering,
project management,
including Civil,
Mechanical, Electrical,
Third party Inspection,
utility freezing,
etc. from foundation
to Mechanical
commissioning
of the plant
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Codes
used : IBR
1965, ASME Section
VIII, Division 1,
BIS and Good Engineering
Practice |
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Description
: In
this, “EFFLUENT
RECYCLE PLANT”
(ERP), the effluents
coming from process
and utility of
utilities will
be collected
in two different
streams, called
process and non-process
respectively,
of different
capacity, separately
from all the
four bulk active
units, located
in Bollaram and
Jedimetla.
The main equipment
can be classified
in to four parts,
based on the
service of the
same, as mentioned
below:
Multiple Effect
Evaporation System
(MEE): Used for
process stream
Processing capacity:
400 cu.m per
day
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Reverse
Osmosis plant (RO):
Used for non-process
stream Processing
capacity: 200 cu.m
per day. |
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Spray
Dryer: Used
burn the reject coming
out of MEE and RO
systems Processing
capacity: 365 kg/hr
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Utilities:
Services, like, steam,
compressed air, cooling
water, soft water,
transformer, DG set,
etc., required for
the above streams |
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PROJECT OBJECTIVE:
The objective
of this project
is mainly to
avoid pollution
in and around
the factory and
also to recover
the utilities,
maximum possible
extent, solvents
and reuse the
same in the process,
in place of fresh
utilities and
solvents, in
the unit –
II and also in
the near by units
– I and
III depending
on the surplus
quantity available.
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PROJECT
DESCRIPTION:
As mentioned
above this project
consists of Multiple
Effect Evaporation
system, Dryer, Reverse
Osmosis System and
other utilities. |
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The
effluents coming
out of the four
units will be
segregated as
process and non
process streams,
at the respective
bulk units, and
sent it to this
plant where in
the facilities
to collect the
same in the respective
sumps.
Then the feed,
process stream
(Multiple Effect
Evaporation System),
fed to the steam
stripper at the
top and it is
controlled by
maintaining level
at bottom of
the stripper.
A plate heat
exchanger is
provided as re-boiler
at the bottom
of the stripper.
Steam is introduced
as heating media
on the shell
side and the
product is re-circulated
on the tube side.
It works like
an assisted flow
rising film type
evaporator and
vapors generated
are supplied
as heat source
to the stripper
at the bottom.
The product which
is free of solvent
is pumped out
from bottom though
a feed pump to
the evaporator.
The vapors supplied
at the bottom
of the stripper
column, where
they get enriched
with solvent
vapors and also
get stripped
off from water
vapors. Therefore,
bottom is free
of solvents.
Focus is given
more on purity
of bottom products
as compared to
top products.
From here the
feed free of
solvents is sent
to the evaporator.
The top solvent
vapors are condensed
in the condenser
by cooling water.
The non condensable
from each shell
will be drawn
and sent to condenser.
The uncondensed
non condensable
are sent out
by vacuum pump
hooked up to
the condenser.
These can be
burnt in the
hot air generator
of the spray
dryer section.
The entire operation
of the plant
is controlled
through a PLC
same as evaporator
system.
UF, NF and RO
System (Non process
stream): This
is membrane based
separation system
for treating
200 cu.m/day
of secondary
treated effluent.
Most of the functions
in the system
are for automatic
operation in
terms of flow,
pressure and
temperature by
way of selector
switch so as
to distinguish
between process
mode and CIP
mode.
The feed to the
system is suitably
pre-filtered
through a built
in back washable
hollow fiber
based UF system.
The filtrate
thus obtained
is subjected
is to two step
membrane process
namely: NANOFILTRATION
SYSTEM followed
by REVERSE OSMOSIS.
While NF takes
care of most
of the COD, color
and part TDS
the subsequent
RO removes TDS
and remaining
COD to produce
reusable grade
water. The overall
product capacity
is designed at
135cu.m/day.
Composition of
Waste Water and
Expected Product
Stream.
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| PARAMETERS |
PRE
TREATED
FEED |
EXPECTED
PRODUCT |
| Total
dissolved
solids |
<
15,000
ppm |
<
100
ppm |
| Suspended
Solids
* |
<
1 ppm |
Nil |
| Ph |
6.5
–
7.0 |
7.5
–
8.5 |
| COD |
<
4,000
ppm |
<
50
ppm |
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The
suspended solids load
in the secondary treated
effluent is considered
to be around 200 ppm.
This will be reduced
to < 1 ppm by UF
& other pre-treatment. |
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