首页> 外文OA文献 >Reductions in ozone concentrations due to controls on variability in industrial flare emissions in Houston, Texas
【2h】

Reductions in ozone concentrations due to controls on variability in industrial flare emissions in Houston, Texas

机译:由于控制德克萨斯州休斯顿工业火炬排放的变化,臭氧浓度降低

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

High concentrations of ozone in the Houston/Galveston area are associated with industrial plumes of highly reactive hydrocarbons, mixed with NOx. The emissions leading to these plumes can have significant temporal variability, and photochemical modeling indicates that the emissions variability can lead to increases and decreases of 10-50 ppb, or more, in ozone concentrations. Therefore, in regions with extensive industrial emissions, accounting for emission variability can be important in accurately predicting peak ozone concentrations, and in assessing the effectiveness of emission control strategies. This work compares the changes in ozone concentrations associated with two strategies for reducing flare emissions in Houston, Texas. One strategy eliminates the highest emission flow rates, that occur relatively infrequently, and a second strategy reduces emissions that occur at a nearly constant level. If emission variability is accounted for in air quality modeling, these control scenarios are predicted to be much more effective in reducing the expected value of daily maximum ozone concentrations than if similar reductions in the mass of emissions are made and constant emissions are assumed. The change in the expected value of daily maximum ozone concentration per ton of emissions reduced, when emissions variability is accounted for, is 5-10 times the change predicted when constant (deterministic) inventories are used. Keywords: Photochemical Grid Model, highly reactive volatile organic compounds (HRVOC), ozone, uncertainty analysis.
机译:休斯顿/加尔维斯顿地区的高浓度臭氧与高反应性碳氢化合物的工业烟气混合,并与氮氧化物混合。导致这些羽流的排放物可能具有明显的时间变化,光化学模型表明,排放物的变化可能导致臭氧浓度增加或减少10-50 ppb,甚至更高。因此,在工业排放量大的地区,考虑排放变化对准确预测臭氧峰值浓度和评估排放控制策略的有效性很重要。这项工作比较了与减少德克萨斯州休斯顿火炬排放的两种策略相关的臭氧浓度变化。一种策略消除了相对很少发生的最高排放流量,而第二种策略则减少了几乎恒定水平的排放。如果在空气质量模型中考虑了排放的可变性,那么与减少排放量并假设恒定排放量相比,这些控制方案预计将在降低每日最大臭氧浓度的预期值方面更加有效。考虑到排放的可变性后,每吨减排量每日最大臭氧浓度的每日期望值的变化是使用恒定(确定性)库存时预测的变化的5-10倍。关键字:光化学网格模型,高反应性挥发性有机化合物(HRVOC),臭氧,不确定性分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号