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1. EDI SY SEM 2 Review
12011207 Nishad Mahore 2
12010447 Vaishnavi Malgaonkar 3
12010466 Omkar Mudkanna 11
12010438 Atharva Panchwagh 13
12010973 Rakhi Pete 19
12011026 Jitendra sanap 35
Bansilal Ramnath Agarwal Charitable Trust’s
VISHWAKARMA INSTITUTE OF TECHNOLOGY
An Autonomous Institute Affiliated to Savitribai Phule University
Branch: Chemical Engineering
Division: B
Batch: B1
Group: 1
Guide: Prof. Sheela Chinchmalatpure

2. Outline
● Problem Statement
● Literature review
● Project Description
● Theoretical Block Diagram
● Process Description
● Simulation Block Diagram
● Simulation Output
● Result and Discussion
● Conclusion
● References

3. Liquefaction of Gases using Hampson–Linde
dual pressure liquefaction system

4. Objectives
Refrigeration from waste
Heat
● Use of Absorption chillers to
convert waste heat to
refrigeration effect
3
Laboratory Experiment
● Systematic Lab experiment
showcasing Hampson–Linde
dual pressure liquefaction
system will be conducted
4
Development of Hampson–
Linde dual pressure
liquefaction system
● Increased process
controllability
● Reduction in energy
requirement for compression
of unit mass of gas.
● Work produced per unit mass
for Liquid produced is less than
Simple Hampson-Linde Cycle
1
Increase in Liquefaction
cycle energy efficiency
● By replacing expansion valves
with expanders will increase
the liquefaction cycle energy
efficiency
2

5. Literature Review
Dynamic
simulation of
natural gas
liquefaction
To study Dynamic
Simulations of natural gas
Liquefaction
2012
● Dynamic Modelling of
cold-box
● Dynamic simulation of
natural gas liquefaction
process
● Conclusion
Exergy analyses of
cryogenic and
liquefaction
systems
Energy and exergy analyses
of a hydrogen liquefaction
plant are presented.
Method → Simple Linde-
Hampson Cycle
2014
● Working of Simple Linde-
Hampson cycle
● Performance parameters
for a simple Linde-
Hampson cycle for
various fluids
● Exergy Analysis
Process technology options
available for liquefaction of
natural gases and their
comparison.
Natural Gas
Liquefaction
2014
● Liquefaction Background
● Types of refrigeration
cycles
● Liquefaction process
selection criteria
● Comparison of different
liquefaction cycles
Industrial Gas
Liquefaction and
Separation
To study the history of gas
liquefaction and
separation.
1988
● Double Column For Air
Separation
● Reversing Heat
Exchangers
● Distillation Columns
● Choices of Liquifiers

6. Literature Review
LIQUEFACTION OF
GASES
To study the process of
liquefaction of Gases
2015
● Liquefaction by Cooling
● Liquefaction by
Expansion
● The Joule–Thomson
Effect
● Linde Liquefaction Plant
Energy, exergy and
pinch analyses of a
novel energy storage
structure
post-combustion CO2
separation unit, dual pressure
Linde-Hampson liquefaction
system, two-stage organic
Rankine cycle and
geothermal energy
2021
● The thermal energy and
electric storage system
using liquid CO2 storage
method.
● The hybrid system for
separation of liquid carbon
dioxide to peak shaving
● Energy, exergy analysis
Energy and Exergy
Analyses of
Natural Gas
Liquefaction
Selection and Development
of efficient refrigeration
cycles to liquefy natural gas
to reduce potential energy
and cost .
2021
● EA of cryogenic
liquefaction system.
● EEA of Linde Hampson
Liquefaction cycle.
● EL in a nonideal Linde
Hampson cycle
● N2CH4 expander
Liquefaction cycle
Natural Gas
Liquefaction Cycle
Enhancements and
Optimization
Method → Mixed
component refrigerant
liquefaction cycle
2014
● Use of Expanders for
enhancement of
Liquefaction cycle
● Use of Absorption chillers
to convert waste heat to
refrigeration effect

7. Project Description
Liquefaction of gases
Physical conversion of a gas into a liquid
state.
Joule - Thompson Effect
Change in temperature of gas by allowing
the gas to pass through a porous plug
from a high-pressure region to low
pressure region
Process → Isenthalpic process
Simple Linde Cycle
Combination of Regenerative cooling and
Joule - Thompson Effect
Use of Expander and
Absorption chiller for
Enhancement in
Liquefaction process
This results in increased Liquefaction
cycle energy efficiency and conversion of
waste heat into Refrigeration effect.
Linde Dual - Pressure
Liquefaction System
Use of 2 Isothermal Compressors, 2
Isenthalpic expansion valve and Three
channel Heat exchanger for reduction in
Work requirement and increase in process
controllability
05
01
02 03
04

8. Theoretical Block Diagram

9. Process Description
1) Mixing
This operation is used to mix the feed stream and recycle stream
and send it for compression
2) Compression
This operation compress the Methane gas to higher pressure so
that after removal of heat and passing through a valve the liquid
methane produced should be at low temperature and normal
pressure

10. Process Description
3) Cooling
This operation is used for removal of heat from the compressed
methane because during the compression process heat is
produced and temperature.
4) Heat Exchange
The recycled methane present in the vapour phase has Low
temperature and acts as a cold stream and the compressed
methane acts as hot fluid.
The temperature difference between these two streams helps to
achieve cooling of compressed methane.

11. Process Description
5) Isenthalpic Expansion
Expansion valve is used because non-ideal fluids show joule
thomson effect thus when pressure drop takes place the
temperature of the fluid also significantly decreases. Thus, two
phases are formed i.e. Liquid phase and Vapour phase.
6) Gas-Liquid Separation
Gas Liquid separator is thus used to separate the Liquid phase
and Vapour phase of methane.

12. Process Description
● In this process, methane feed is fed to
mixer which is recycle and then sent to the
compressor.
● The compressor compress feed and sent to
the cooler which is used for removal heat
from outlet.
● The stream is proceed to the mixer where
second phase of recycle stream arriving
from the heat exchanger mixes with cooler
outlet feed.
● Process feed is sent to compressor which is
compressed the sent to the heat exchanger
where feed cooled by recycled vapour
methane.
● Feed is proceed to the 2nd heat exchanger
where 2nd vapour methane fluid which is
cooled process fluid.
● The feed is proceed to cooler in that
expansion takes place at valve.
● And the vapour phase methane and liquid
methane is sent to gas liquid separator
where these two phases separated and
vapour phase is recycled and liquid phase is
proceed to valve where pressure is
maintained and again 2 phases are formed
and thus after passing through gas liquid
separator the vapour phase sent back to
recycle and liquid phase collected as output.

13. Simulation Block Diagram

14. Simulation Output
Cooler 1
04
● Calculation type: Outlet Temperature
● Outlet Temperature: 300 K
Compressor 1
03
● Calculation type: Outlet Pressure
● Outlet Pressure: 1.0342E+07 Pa
● Adiabatic efficiency:75%
● Rotation Speed: 1500 rpm
Mixer 1
02 ● Property Package: : Peng-Robinson
Methane feed
01
● Temperature:298.15 K,
● Pressure: 137895 Pa
● Flow rate: 36156 kg/s

15. Simulation Output
Heat Exchanger 2
04
● Calculation type: Calculate cold fluid outlet
temperature
● Flow Direction: Counter current
● Hot fluid outlet: temperature: 250 K
● Exchange Area: 10 m^2
Heat Exchanger 1
03
● Calculation Type: Calculate cold fluid outlet
temperature
● Flow Direction: Counter current
● Hot fluid outlet temperature: 300 K
● Exchange Area: 10 m^2
Compressor 2:
02
● Calculation type: Outlet Pressure
● Outlet Pressure: 2.0684E + 07 Pa
● Adiabatic efficiency: 75%
● Rotation Speed: 1500 rpm
Mixer 2
01 ● Property Package: Peng-Robinson

16. Simulation Output
Recycle vapour methane
stream 1
04
● Temperature: 181 K
● Pressure: 3.4e+06 Pa
● Flow Rate: 27200 kg/s
Gas Liquid Separator 1
03
● Outlet Pressure Calculation: Inlet Minimum
● Property Package: Peng Robinson
Valve 1
02
● Calculation type: Outlet Pressure
● Outlet Pressure: 3.447E+06 Pa
Cooler 2
01 ● Calculation type: Outlet temperature
● Outlet temperature: 235 K

17. Simulation Output
Liquified methane output
04
● Temperature: 298.15 K
● Pressure: 137895 Pa
● Flow Rate: 3575 kg/s
Recycle vapour methane
stream 2
03
● Temperature: 115 K
● Pressure: 137895 Pa
● Flow Rate: 5348 kg/s
Gas Liquid Separator 2
02
● Outlet Pressure Calculations: Inlet Minimum
● Property Package: Peng Robinson
Valve 2
01 ● Calculation type: Outlet Pressure
● Outlet Pressure: 137895 Pa

18. Results and Discussions
1) Yield ratio:
/Liquefied Methane ( Flow Rate
)/Methane feed (flow rate) = 0.09
1) Yield % = 9.88 %

19. I . INPUT AND OUTPUT FEED
II COMPRESSOR OUTLET
STREAM
III. COOLER OUTLET
STREAMS

20. IV . HEAT EXCHANGER OUTLETS
V. VALVE OUTLET STREAM
VI . GAS-LIQUID
SEPARATOR OUTLET
STREAMS

21. VII . RECYCLE STREAM

22. Conclusions
Work done for
liquefying unit
mass of gas is less
than the simple
linde’s cycle.
3
Cost efficient , easy
for operating
cryogenic plants.
4
Large-scale
application in
Industries and
cryogenic sectors.
5
1
Methane can be
liquified using
Linde’s Dual
pressure
Liquefaction
system.
The use of two
valves resulted in
increasing the yield
and reducing
energy
consumption.
2

23. References
1] Bahram Ghorbani, Gholamreza Salehi, Armin Ebrahimi, Masoud Taghavi, 1 June 2021, Energy, exergy and pinch analyses of a novel energy
storage structure using post-combustion CO2 separation unit, dual pressure Linde Hampson liquefaction system, two-stage organic Rankine cycle and
geothermal energy
2] Kiwook Song, Chul-Jin Lee, Jeongwoo Jeon, Chonghun Han, 20 June 2012, Dynamic simulation of natural gas liquefaction process
3] Saeid Mokhatab, John Y. Mak, Jaleel V. Valappil, David A. Wood, 2014, Natural Gas Liquefaction Cycle Enhancements and Optimization
4] Geoffrey G. Haselden, 1998, INDUSTRIAL GAS LIQUEFACTION AND SEPARATION
5] Ibrahim Dincer, Marc A. Rosen,January 2021, Exergy analyses of cryogenic and liquefaction systems
6] Saeid Mokhatab, John Y. Mak, Jaleel V. Valappil, David A. Wood, 2014, Natural Gas Liquefaction Cycle Enhancements and Optimization
7] Saeid Mokhatab, John Y. Mak, Jaleel V. Valappil, David A. Wood, 2014, Energy and Exergy Analyses of Natural Gas Liquefaction

24. Thank You