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首页> 外文期刊>Environmental Science & Technology >Atmospheric Hydrocarbon Emissions and Concentrations in the Barnett Shale Natural Gas Production Region
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Atmospheric Hydrocarbon Emissions and Concentrations in the Barnett Shale Natural Gas Production Region

机译：巴尼特页岩天然气产区的大气碳氢化合物排放量和浓度

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摘要

Hourly ambient hydrocarbon concentration data were collected, in the Barnett Shale Natural Gas Production Region, using automated gas chromatography (auto-GC), for the period from April 2010 to December 2011. Data for three sites were compared: a site in the geographical center of the natural gas production region (Eagle Mountain Lake (EML)); a rural/suburban site at the periphery of the production region (Flower Mound Shiloh), and an urban site (Hinton). The dominant hydrocarbon species observed in the Barnett Shale region were light alkanes. Analyses of daily, monthly, and hourly patterns showed little variation in relative composition. Observed concentrations were compared to concentrations predicted using a dispersion model (AERMOD) and a spatially resolved inventory of volatile organic compounds (VOC) emissions from natural gas production (Barnett Shale Special Emissions Inventory) prepared by the Texas Commission on Environmental Quality (TCEQ), and other emissions information. The predicted concentrations of VOC due to natural gas production were 0-40% lower man background corrected measurements, after accounting for potential underestimation of certain emission categories. Hourly and daily variations in observed, background corrected concentrations were primarily explained by variability in meteorology, suggesting mat episodic emission events had little impact on hourly averaged concentrations. Total emissions for VOC from natural gas production sources are estimated to be approximately 25 300 tons/yr, when accounting for potential under-estimation of certain emission categories. This region produced, in 2011, approximately S bcf/d of natural gas (100 Gg/d) for a VOC to natural gas production ratio (man bads) of 0.0006.
机译：使用自动气相色谱仪（auto-GC），在Barnett页岩天然气产区每小时收集的环境碳氢化合物浓度数据为2010年4月至2011年12月。比较了三个地点的数据：地理中心的地点天然气生产地区（鹰山湖（EML））；生产区域外围的乡村/郊区站点（Flower Mound Shiloh）和城市站点（欣顿）。在Barnett页岩地区观察到的主要碳氢化合物是轻质烷烃。每日，每月和每小时模式的分析显示相对组成几乎没有变化。将观测到的浓度与使用弥散模型（AERMOD）预测的浓度以及由德克萨斯州环境质量委员会（TCEQ）编制的天然气生产中的挥发性有机化合物（VOC）排放的空间分辨清单（Barnett页岩特殊排放清单）进行比较，和其他排放信息。在考虑到某些排放类别的潜在低估之后，由于天然气生产而导致的VOC预测浓度比人工背景校正后的测量值低0-40％。观测值，背景校正浓度的每小时和每天变化主要是由气象学的变化解释的，这表明垫层事件的排放事件对每小时平均浓度几乎没有影响。考虑到某些排放类别的潜在低估，天然气生产来源的VOC排放总量估计约为每年25300吨。该地区在2011年生产了大约S bcf / d的天然气（100 Gg / d），VOC与天然气的生产比率（人造废料）为0.0006。

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  • 来源
    《Environmental Science & Technology》 |2014年第9期|5314-5321|共8页
  • 作者

    Daniel Zavala-Araiza; David W. Sullivan; David T. Allen;

  • 作者单位

    Center for Energy and Environmental Resources, The University of Texas at Austin, 10100 Burnet Rd., Austin, Texas 78758, United States;

    Center for Energy and Environmental Resources, The University of Texas at Austin, 10100 Burnet Rd., Austin, Texas 78758, United States;

    Center for Energy and Environmental Resources, The University of Texas at Austin, 10100 Burnet Rd., Austin, Texas 78758, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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