Uses for expanded production of natural gas liquids: chemicals or power?

Uses for expanded production of natural gas liquids: chemicals or power?
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扩大天然气液体生产的用途:化学品还是电力?

DOI:
10.1002/wene.258
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发表时间:
2017
期刊:
Wiley Interdisciplinary Reviews: Energy and Environment
影响因子:
--
通讯作者:
Webster, Mort
Webster, Mort
中科院分区:
--
文献类型:
--
作者:
Allen, David T.;Cardoso‐Saldaña, Felipe J.;McGaughey, Gary;McDonald‐Buller, Elena;Webster, Mort

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美国扩大的天然气液体(液化天然气、乙烷、丙烷、丁烷)的生产可能会继续用于国内和国际的化学品制造;然而,这将需要发展扩大的运输基础设施。发电是NGL的另一种用途。作为NGL在发电中价值的案例研究,对NGL在德克萨斯州电网中的潜在使用进行了评估。假设电力将在25兆瓦的燃气轮机中产生,这些燃气轮机位于天然气加工厂,在那里产生的天然气中的NGL被分离出来,以产生管道质量的天然气。使用德克萨斯州伊格尔福特和巴尼特石油和天然气产区生产的天然气,德克萨斯州电网基于天然气的潜在发电量估计高达2.7GW,是电网平均需求的6%。基于天然气的发电取代了以煤炭和天然气为基础的发电,对可再生能源的使用几乎没有影响。在小型燃气轮机的假设效率(34.7%)和非燃料运行成本(7美元/兆瓦时)下,只有当燃料价格低于每百万BTU 1.50美元(相对于模型中假设的煤炭燃料价格每百万BTU折扣0.90美元)时,NGL才能完全用于德克萨斯电网的发电。如果在需求旺盛的时候使用NGL发电,或者如果使用更大、更高效率的涡轮机,可能会支持更高的价格。WIREs Energy Environmental 2018,7:e258。DOI:10.1002/wene.258这篇文章归类于:化石燃料和系统和基础设施能源基础设施和系统和基础设施
Expanded production of natural gas liquids (NGLs, ethane, propane, butanes) in the United States may continue to be utilized in domestic and international chemical manufacturing; however, this would require the development of expanded transport infrastructures. Electricity generation is an alternative use for NGLs. As a case study of the value of NGLs in electricity generation, the potential use of NGLs in the Texas electrical grid was evaluated. It was assumed that electricity would be generated in 25‐MW gas turbines, located at gas‐processing plants where NGLs in produced gas are separated to create pipeline‐quality gas. The potential magnitude of NGL‐based power generation in the Texas grid, using NGLs produced in the Eagle Ford and Barnett oil and gas production regions in Texas, was estimated to be up to 2.7 GW of electricity, 6% of average demand on the grid. The NGL‐based electricity generation displaced coal and natural gas‐based generation, with little impact on the use of renewables. At the assumed efficiency (34.7%) and nonfuel operating cost ($7/MWh) of small gas turbines, NGLs are only fully utilized for electricity generation in the Texas grid when fuel prices are lower than $1.50 per million BTU (a discount of $0.90 per million BTU relative to the fuel price of coal assumed in the modeling). Higher prices might be supported if NGLs are used for electricity generation at times of high demand or if larger, higher efficiency turbines are utilized.WIREs Energy Environ2018, 7:e258. doi: 10.1002/wene.258This article is categorized under:Fossil Fuels > Systems and InfrastructureEnergy Infrastructure > Systems and Infrastructure
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