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Air Products has supplied three dedicated air separation units (ASU) and an oxygen pipeline supply for various integrated gasification combined cycle facilities ranging from 100 to 250 MW.
INTEGRATED GASIFICATION COMBINED CYCLE (IGCC)
SYNTHETIC NATURAL GAS (SNG) |
| On-stream |
Location |
O2, MT/D |
O2, bar(g) |
Trains |
Feedstock |
End Use |
| 2010 |
Edwardsport, IN |
5,000 |
60 |
2 |
Coal |
Power |
| 1997 |
Netherlands |
3,175 |
76 |
1 |
Resid |
H2/Power |
| 1996 |
Polk County, FL |
1,840 |
40 |
1 |
Coal |
Power |
| 1994 |
Netherlands |
1,780 |
33 |
1 |
Coal |
Power |
| 1987 |
Plaquemine, LA |
1,360 |
45 |
1 |
Coal |
Power |
The Netherlands plant, which we completed in 1994, was the world's first fully integrated air separation facility. The 1,780 metric ton oxygen plant obtains all of its air feed via gas turbine air extraction. The unit operates at an elevated pressure, with residual nitrogen compressed and returned to the combustion turbine. Designing the Netherlands ASU to meet the demanding requirements of a highly integrated application has uniquely prepared Air Products to provide equipment and services to serve the needs of any project.
In addition to our experience at Lousiana, Florida, Netherlands and other projects, Air Products has participated in many design and study efforts worldwide to advance gasification combined cycle facility design. In performing IGCC studies, Air Products has worked with all the major combustion turbine suppliers and most of the leading engineering contractors in this industry. Air Products has provided ASUs for various levels of integration with gas turbine combined cycle facilities, as show below:
- The standalone or non-integrated option uses a low air feed pressure ASU selected to reject waste nitrogen to the atmosphere.
- The nitrogen integrated design provided for the Florida facility uses an elevated air feed pressure ASU, optimized for a combination of equipment cost and power consumption.
- The full air and nitrogen integrated option is designed around the air supply pressure from the gas turbine's air compressor. At the Netherlands facility, all the air for the ASU is supplied via extraction from the gas turbine and all residual nitrogen is compressed for injection into the turbine
- In addition to the configurations described above there are other possible arrangements such as multiple air compressor trains that supply air to a common air separation train. Such a configuration can also include air and/or nitrogen integration with gas turbines.
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| Air Products air separation plant with 3175 MT/D (92,700 Nm3/H) of oxygen capacity located in Rozenburg, Netherlands. |
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Air Products air separation plant with 1780 MT/D (44,416 Nm3/H) of oxygen capacity located in Buggenum, Netherlands |
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