Field tests prove microscale NRU to upgrade low-btu gas
Oil & Gas Journal
By: Saibal Bhattacharya, K. David Newell, W. Lynn Watney, and Micael Sigel
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Abstract
The Kansas Geological Survey (University of Kansas) and the American Energies Corp., Wichita, have conducted field tests of a scalable, microscale, N2-rejection unit (NRU) to demonstrate its effectiveness to upgrade low-pressure ((<100 psig) and low-volume (=100 Mcfd) low-btu gas to pipeline quality. The tests aim to develop inexpensive NRU technology, which is designed for low- volume, low-pressure gas wells, to significantly increase the contribution of marginal low-btu gas to the gas supply of the US. The NRU uses two towers and uses three stages, namely, adsorption under pressure, venting to 2 psig, and desorption under vacuum. The modular design allows additional sets of towers to be added or removed to handle increases or decreases in feed volumes. The field tests also reveal that a strong compressor, which is capable of evacuating the tower (volume) as quickly as possible, should be employed to reduce process cycle time and increase plant throughput.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Field tests prove microscale NRU to upgrade low-btu gas |
| Series title | Oil & Gas Journal |
| Volume | 107 |
| Issue | 40 |
| Year Published | 2009 |
| Language | English |
| Publisher | PennWell Corporation |
| Publisher location | Tulsa, OK |
| Description | 10 p. |
| First page | 44 |
| Last page | 53 |
| Google Analytic Metrics | Metrics page |