|
This site is out of date. Visit our new website at www.guha.biz
 
Application
 |
Petrochemical complex in Western India. |
|
Cooling inlet air to naphtha fired combined cycle to ISO conditions. |
|
Capacity 260 TR at -5oC evaporation, 0 to 10oC
brine. |
|
Plant to have flexibility to operate at 200 TR, -5 to 5oC brine
(mode 2). |
|
Steam from extraction turbine at 1kg/cm2, or from Benzene condenser
(which was earlier using cooling water). |
|
Cooling water supplied at 34oC owing to temperate, humid
conditions. |
|
Rigid safety standards to be followed due to location next to high traffic
highway and proximity to city limits. |
Comparative utility requirement
Comparison is drawn against compressors that were being considered by the
client.
| |
Compressors |
Ammonia absorption |
| Electricity |
500 HP installed, consuming 360 KW. |
50 HP installed, consuming 30 KW |
| Steam |
Nil |
2,600 kg/h |
Payback / benefits.
|
Effective cost of power - Rs.5/- ($0.11) per KW. |
|
Effective cost of steam - Rs.100/- ($2.20) per ton from turbine (opportunity
lost to operate as condensing turbine) and Nil for steam from Benzene
condenser. |
|
Effective power saving for 6,000 hrs per year operation - about 2,000,000
units or Rs.10,000,000/- ($220,000/-). |
|
Effective cost of steam - Rs.1,560,000/- ($34,320/-) or less if partly
operated with Benzene condenser steam. |
|
Payback for Ammonia absorption system - Less than two years. |
|
If the cost differential with compressors is taken, payback would be very
attractive at around 6 months. |
|
