This presentation will help in understanding principle and basics of stripping process in industry.

2. Improvement of
Stripping Index
of Catacarb
system at
Ammonia -2
Ibrar Khalid
Ammonia-2 Operations
University of Engineering and
Technology Lahore

3. CNG Vehicles Slogan
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keep the CNG Vehicles from plant gate away

4. Ammonia 2
Front End
i) Reforming
Post
ii)Purification
post
Back End
i) Compressor
Post
ii) Synthesis Post

5. Feed Gas
Compression
Feed gas
Desulfurization
Reforming
Methanation Mol. Sieves
CO2 Removal
Shift Conversion
Reaction
Syngas
Compression
Conversion
and
Condensation
of Ammonia

6. Purification Post
 To remove CO2 from synthesis gas which
is going to back end for synthesis of
Ammonia
 Two Major operations
1. Absorption
2. Stripping

7. Stripping
 Stripper is used to separate a
minor component (solute)
from liquid (solvent) which
has absorbed it in absorber.
 Regeneration of solvent of
absorber
 Suitable conditions for
stripper
 High temperature
 Low pressure

8. Stripping Index
 Amount of energy needed to remove/ strip out 1 lb
mol of CO2 in the stripper
 Calculated by applying energy balance on the
stripper
 Gives us an idea about efficient working of
stripper

11. Refrige machine
 Two stage compressor working in refrigeration
loop
 Pressurize all in taken ammonia vapors up to
required pressure so that these can be
condensed back into liquid routed through
condensers
d
P
d
] /(ln( )
)
(ln
1
[
Polytropic T
s
s
T
P
k
k
Efficiency



14. Recommendations
 40 psig steam flow rate to be reduced
 Ejectors cleaning is required
 Increase pressure of 60 psig steam up to 68-69 psig
 Decrease the flow rate of Lean solution and
increase the flow rate of semi lean solution
 Lines coming to ejectors also need insulation on
some points