Ahmed Iftikhar, Abbas Shahbaz, Jamal Fahim Qaiser, Ahmad Iftikhar, Naseem Afshan, Tahir Abdul Malik
Department of Engineering Management, College of Electrical and Mechanical Engineering (CEME), National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan.
Faculty of Engineering Management, CEME, NUST, Islamabad, 44000, Pakistan.
Heliyon. 2024 Feb 7;10(4):e25811. doi: 10.1016/j.heliyon.2024.e25811. eCollection 2024 Feb 29.
Natural gas and condensate are exposed to hydrates formation at high pressure and low temperature in the presence of traces of water. Hydrates formation results in blockage of pipelines and equipment leading to plant shutdown and production losses. This study intends to find a novel hydrate prevention process for high pressure refrigerated condensate (HPRC) lines. HPRC is utilised as lean oil for enhanced liquified petroleum gas recovery in absorption process. This research was conducted by performing fifteen tests in which various processed natural gas (PNG) samples were injected into different HPRC samples using Aspen HYSYS software. The results showed lowering of the hydrates formation temperature in the HPRC at constant pressure. By capitalizing on in-house resources and reducing dependence on traditional hydrate inhibitors, this innovative approach offers cost-effectiveness and readily available hydrate inhibitor for HPRC lines in gas processing facilities. Moreover, it has been found that PNG samples with a relatively higher percentage of methane are more effective in lowering the hydrate formation temperature when injected into the HPRC lines. This study will enable hydrates researchers in reducing hydrates management costs in HPRC lines and invite hydrates prevention research in all areas capitalizing on in-house resources and reducing external dependence.
在存在微量水的情况下，天然气和凝析油在高压和低温条件下会面临水合物形成的问题。水合物的形成会导致管道和设备堵塞，从而致使工厂停产并造成生产损失。本研究旨在为高压冷冻凝析油（HPRC）管线找到一种新型的水合物预防工艺。HPRC被用作贫油，用于在吸收过程中提高液化石油气的回收率。本研究通过使用Aspen HYSYS软件进行了15次试验，将各种处理后的天然气（PNG）样品注入不同的HPRC样品中。结果表明，在恒定压力下，HPRC中水合物的形成温度降低。通过利用内部资源并减少对传统水合物抑制剂的依赖，这种创新方法为天然气处理设施中的HPRC管线提供了成本效益高且易于获得的水合物抑制剂。此外，研究发现，甲烷含量相对较高的PNG样品注入HPRC管线时，在降低水合物形成温度方面更有效。本研究将使水合物研究人员能够降低HPRC管线中的水合物管理成本，并促使所有领域利用内部资源并减少外部依赖来开展水合物预防研究。
