1000 Tons Per Year Riboflavin (Vitamin B2) Crystal Production Plant | Process...
pump design
1. Welcome to
Project Presentation on
“DESIGN OF CENTRIFUGAL PUMP”
Prepared By
Nishant R Shah
8th
Semester
Y760038
Carried out at
LUPIN LIMITED
TARAPUR
2. COMPANY PROFILE
One of the world’s largest Manufacturers of Anti-TB Drugs
and Leading Global Player of Cardio-vascular Drugs
It has a notable presence in the areas of diabetes and
respiratory therapy
One of the Topmost Pharmaceutical Company in the country
A public limited company established by Dr.Deshbandhu
Gupta in the year 1968 and has annual turnover of Rs.6000
crores
Various Plants in the Company
Fermentation Plant
Chemical Synthesis Plants
Multi-Purpose Plants
Effluent Treatment Plant
Reverse Osmosis Plant
Multiple Effect Evaporator Plant
Solvent Recovery Plants
3. INTRODUCTION
PUMP
Pump is a device which converts mechanical energy into
hydraulic energy by any of various technologies, typically by
suction orcompression, used to move water, airorotherfluids
into through orout of a system.
4. CENTRIFUGAL PUMP
Introduction
A kinetic device which adds energy to
the pumped liquid by increasing its velocity
It transforms mechanical energy from a
rotating impellerinto kinetic and potential
energy
A simple machine which consists of a set
of rotating vanes enclosed with a housing or
casing
6. COMPONENTS
Stuffing Box Mechanical Seal Coupling
Reduces Leakage Forms a seal between Connects pump to
rotary & stationary the pump driver
part of the pump
8. TERMINOLOGY
1. AIRBINDING:
If airenters the impeller, the pump is not capable to drive the liquid
through the delivery pipe. This is called as airbinding of the pump.
2. PRIMING:
If pump is initially full of airto avoid airbinding, the centrifugal pump
needs
priming. The removal of airfrom the suction line &pump casing is known
as
priming. The priming should be done before the pump is started.
3. NETPOSITIVESUCTION HEAD(NPSH):
The NPSHof the pump is the amount by which the pressure
available at the suction point is in excess orgreaterthan the vapour
9. TERMINOLOGY
4. CAVITATION:
If the pressure in the suction line is less than the vapour
pressure of
the liquid then some of the liquid flashes into the vapourwhich
leads
to the formation of airbubbles that damages the impeller. This
phenomenon is Cavitation. Cavitation results in no pumping of
liquids. The occurrence of cavitation can be noted by a marked
increase in noise &vibration as the vapourbubbles collapse &
also a
loss of head &efficiency.
Two important terms :
Net Positive Suction Head Available (NPSHA)
Net Positive Suction Head Required (NPSHR)
10. PUMP CALCULATIONS
As perProcess Flow Diagram, Data forPump selection are as below:
Materials of Construction = SS-316
Pumping Fluid = Methanol
Flow rate = 10 m³ /hr
Density = 790 kg/m
3
Sp.gravity = 0.79
Viscosity = 0.6Cp
Vapourpressure = 400mmHg = 5.44mWc
Pressure in suction tank =1.033 kg/cm² = 10.33 mWc
Pressure in discharge reactor=1.033 kg/cm² = 10.33 mWc
Suction static head (hs)= 3m
Discharge static head (hd)= 19 m
Suction side velocity (vs) = 0.55 m /s
Discharge side velocity (vd) = 1.41 m /s
Methanol Temperature in Storage Tank = 35° c
Temperature of Chilled Waterin Heat Exchanger= 10
0
C
Methanol Temperature in Reactor= 15
0
C
19. Advantages
Requires Less floorspace &simple foundation
Steady discharge
The pump does not get damaged even if the
discharge
gets blocked
It can handle Liquids containing high proportions of
suspended solids
Lowermaintenance cost
Cheaper
Operated at high speed
Used forlarge capacity &low heads
Editor's Notes
Used for low heads,suspended solids applications,very small flows.
Suitable for pumping liquids containing suspended solids.
For viscous liquids.
Used to break up suspended particles and prevents clogging.
Suitable for liquids containing small solid particles.
For viscous liquids.
Used for pumping clear liquids.
Used for high head and high pressure applications.
The value by which the pressure in the pump suction exceeds the liquid vapour pressure is expressed as a head of liquid and referred to as NPSHA
The value of NPSH needed at the pump suction to prevent the pump from cavitating is known as NPSHR