Urea Plant National Fertilizers Limited
Urea Plant National Fertilizers Limited
Urea Plant National Fertilizers Limited
NANGAL(PUNJAB)
Presented by
Sanjay Godara
13112079
UREA PLANT
Based
Plant
Before
Commercial
Present
UREA PLANT
CO2
Urea
Synthesis
Urea
Saparation
Recovery
Vacuum
Prilling
Section
Section
Section
CO2
11 atm
CA-1
220 atm
Old Urea
Reactor
Ammonia Plant -2
Purification and Rectisol
Section
1.5 atm
CO2
CA-2
220 atm
New Urea
Reactor
CO2 Compressor
New Compressor
(CA-2)
No. of stages
Suction pressure
11 atm
1.5
Dischrge pressure
220 atm
220 atm
Motor Power
2250 KW
2400 KW
RPM
300
350
make
Worthington
Nuovo
2200ppm
3500ppm
Suction Pressure
20-30 atm
Urea Synthesis
Old Reactor
New Reactor
Volume
50 M3
33 M3
No. of trays
14
Type of trays
Temp. Bott./Top
184/196
184/198
Pressure
220 atm
220 atm
Thickness
12mm
6mm
NH3/CO2
2.9
2.75
H2O/CO2
0.7
New Reactor
Old Reactor
The
All
Conventional Process
Decomposition
NH4CO2NH2 + heat = 2NH3 + CO2
70 atm
185 degree celsius
54.5%
2nd Stage
Pressure
Temperature
Urea conc.
12 atm
150 degree celsius
65%
3rd Stage
Pressure
Temperature
Urea conc.
3 atm
130 degree celsius
72%
Vacuum Section
1st Stage
Pressure
0.35 atm
Temperature
Urea conc.
95%
2nd Stage
Pressure
0.04 atm
Temperature
Urea conc.
99.6%
Prilling Section
Tower
Height
104 .5 mtr
80 mtr
Diameter
22 mtr
Scrapper type
conical
Make
Tuttle/Simco
Number
Bucket
1.5 atm
Temperature
Outlet Condition
NH3
Urea
0.04%
1.0 %
Discription
Urea Product
Quality(Avg.) at
NFL,Nangal
1.
Total N2
46.0%(Min.)
46.4%
2.
Moisture
1.0%(Max.)
0.4-0.5 %
3.
Prill Size
i) Under size(<1mm)=10%
~1.4%
~98.60%
Nil