Investigation of Options for Harnessing Energy Losses at Pressure-Reducing Stations of High-Pressure Natural Gas Pipelines
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 13, Issue 4
Abstract
In this study, the possibility of installing turboexpanders instead of throttle valves was investigated and analyzed using Aspen HYSYS and Aspen Capital Estimator version 12.1. The optimization and energy saving cases were studied for maximum power or electrical energy generation as well as liquefied natural gas (LNG) production. Three case studies with various refrigeration cycles were evaluated according to economic considerations. It was found that the cases of power generation and LNG production were the best cases for energy recovery in gas pressure–reduction stations. The capital cost and rate of return (ROR) of this process were $232.2 million and 75%, respectively. The employed technique and developed process can be used for the optimization of energy in gas pressure–reduction stations.
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Data Availability Statement
All data, models, and codes generated or used during the study appear in the published article.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 13 • Issue 4 • November 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Dec 4, 2021
Accepted: May 3, 2022
Published online: Jul 29, 2022
Published in print: Nov 1, 2022
Discussion open until: Dec 29, 2022
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