Estimating the line packing time for pipelines transporting carbon dioxide
During the operation of pressurised pipelines transporting compressible fluids, line packing is employed as an effective method that uses the pipeline itself as a buffer storage, compensating for fluctuations in the fluid supply or demand. While in large-capacity natural gas transmission systems, re...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-06-01
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| Series: | Carbon Capture Science & Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772656823000921 |
| _version_ | 1797371385157255168 |
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| author | Sergey B. Martynov Richard T.J. Porter Haroun Mahgerefteh |
| author_facet | Sergey B. Martynov Richard T.J. Porter Haroun Mahgerefteh |
| author_sort | Sergey B. Martynov |
| collection | DOAJ |
| description | During the operation of pressurised pipelines transporting compressible fluids, line packing is employed as an effective method that uses the pipeline itself as a buffer storage, compensating for fluctuations in the fluid supply or demand. While in large-capacity natural gas transmission systems, reaching maximum operating pressures during line packing is usually not of practical concern, in small capacity pipelines transporting low-compressibility fluids, such as liquid or dense-phase CO2, line packing can occur quickly, and therefore, estimating the line packing times becomes important to ensure avoiding exceeding the pipeline maximum allowable operating pressure. In this study, a correlation for estimating the line packing time is derived from the transient mass balance in the pipeline. The proposed correlation accounts for the pipeline overall dimensions, operating pressure and temperature, and the fluid properties, namely density and the expansion coefficient. The correlation is also adopted for the calculation of pipeline unpacking times caused by unbalanced discharge from a pipeline. A verification study on line packing in a dense-phase CO2 pipeline shows that within the ranges tested, the proposed correlation estimates conservatively the line packing times with ca. 15 % deviation from the results of simulations obtained using a rigorous transient pipeline flow model. The proposed correlation is also verified against predictions obtained using a parabolic flow model and is recommended for estimating line packing times for both dense-phase and gas-phase CO2 at pressures and temperatures in the ranges 2 - 12 MPa and 280 – 330 K, respectively. The limitations of the proposed line packing time correlation are discussed. |
| first_indexed | 2024-03-08T18:19:03Z |
| format | Article |
| id | doaj.art-e8781a7fdaa748a6b3d8360226325a60 |
| institution | Directory Open Access Journal |
| issn | 2772-6568 |
| language | English |
| last_indexed | 2024-03-08T18:19:03Z |
| publishDate | 2024-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj.art-e8781a7fdaa748a6b3d8360226325a602023-12-31T04:29:16ZengElsevierCarbon Capture Science & Technology2772-65682024-06-0111100188Estimating the line packing time for pipelines transporting carbon dioxideSergey B. Martynov0Richard T.J. Porter1Haroun Mahgerefteh2Corresponding author.; Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, United KingdomDepartment of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, United KingdomDepartment of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, United KingdomDuring the operation of pressurised pipelines transporting compressible fluids, line packing is employed as an effective method that uses the pipeline itself as a buffer storage, compensating for fluctuations in the fluid supply or demand. While in large-capacity natural gas transmission systems, reaching maximum operating pressures during line packing is usually not of practical concern, in small capacity pipelines transporting low-compressibility fluids, such as liquid or dense-phase CO2, line packing can occur quickly, and therefore, estimating the line packing times becomes important to ensure avoiding exceeding the pipeline maximum allowable operating pressure. In this study, a correlation for estimating the line packing time is derived from the transient mass balance in the pipeline. The proposed correlation accounts for the pipeline overall dimensions, operating pressure and temperature, and the fluid properties, namely density and the expansion coefficient. The correlation is also adopted for the calculation of pipeline unpacking times caused by unbalanced discharge from a pipeline. A verification study on line packing in a dense-phase CO2 pipeline shows that within the ranges tested, the proposed correlation estimates conservatively the line packing times with ca. 15 % deviation from the results of simulations obtained using a rigorous transient pipeline flow model. The proposed correlation is also verified against predictions obtained using a parabolic flow model and is recommended for estimating line packing times for both dense-phase and gas-phase CO2 at pressures and temperatures in the ranges 2 - 12 MPa and 280 – 330 K, respectively. The limitations of the proposed line packing time correlation are discussed.http://www.sciencedirect.com/science/article/pii/S2772656823000921CO2 transportPipelineLine packUnpackingTransientsOperational flexibility |
| spellingShingle | Sergey B. Martynov Richard T.J. Porter Haroun Mahgerefteh Estimating the line packing time for pipelines transporting carbon dioxide Carbon Capture Science & Technology CO2 transport Pipeline Line pack Unpacking Transients Operational flexibility |
| title | Estimating the line packing time for pipelines transporting carbon dioxide |
| title_full | Estimating the line packing time for pipelines transporting carbon dioxide |
| title_fullStr | Estimating the line packing time for pipelines transporting carbon dioxide |
| title_full_unstemmed | Estimating the line packing time for pipelines transporting carbon dioxide |
| title_short | Estimating the line packing time for pipelines transporting carbon dioxide |
| title_sort | estimating the line packing time for pipelines transporting carbon dioxide |
| topic | CO2 transport Pipeline Line pack Unpacking Transients Operational flexibility |
| url | http://www.sciencedirect.com/science/article/pii/S2772656823000921 |
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