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首页> 外文会议>Air and Waste Management Association annual conference and exhibition >Advances in the Measurement of Particulate Matter from Stationary Sources: OTM-37 Field Testing
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Advances in the Measurement of Particulate Matter from Stationary Sources: OTM-37 Field Testing

机译：固定来源颗粒物测量的新进展：OTM-37现场测试

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Measurement techniques for particle emissions with aerodynamic diameter of 10 and 2.5 micrometers and smaller (PM_(10) and PM_(2.5), respectively) have gained renewed interest since finalization of EPA guidance for considering condensable particulate matter under New Source Review permitting guidelines. To develop improved PM_(10)/PM_(2.5) emissions data for permitting purposes, tests using a new stationary source dilution sampling test method, Other Test Method 37 (OTM-37), were performed on more than fifty different gas-fired boilers and process heaters at a large U.S. refinery. This testing campaign provided useful lessons regarding OTM-37 test planning, site and equipment challenges and regulatory agency perspectives. It also provided method performance data in terms of method blanks and samples, method detection levels, best practices, and results calculations. The test results demonstrate the capability of OTM-37 to measure PM_(10)/PM_(2.5) concentrations at significantly lower levels than traditional hot filter/cooled impinger methods. The test results also show that PM_(10)/PM_(2.5) emissions for gas-fired sources are significantly lower than suggested by widely-published emission factors based on hot filter/cooled impinger techniques. A PM_(10)/PM_(2.5) emission factor based on the average OTM-37 results for gas-fired boilers and process heaters is approximately one-fifth of the current AP-42 emission factor (and much lower than this when certain sources of measurement error are excluded). The results also highlight the importance of best practices and the limitations of certain gravimetric procedures in achieving accurate PM_(10)/PM_(2.5) emissions measurements for gas-fired sources.
机译：自从根据新源审查许可指南考虑可凝性颗粒物的EPA指南最终确定以来，空气动力学直径为10和2.5微米或更小的颗粒物排放的测量技术（分别为PM_（10）和PM_（2.5））引起了人们的新兴趣。为了开发改进的PM_（10）/ PM_（2.5）排放数据以用于许可目的，在50多种不同的燃气锅炉上使用新的固定源稀释采样测试方法“其他测试方法37”（OTM-37）进行了测试。在美国一家大型炼油厂加工加热器。该测试活动提供了有关OTM-37测试计划，站点和设备挑战以及监管机构观点的有用课程。它还提供了有关方法空白和样品，方法检测水平，最佳实践和结果计算的方法性能数据。测试结果表明，OTM-37能够以比传统的热过滤器/冷冲击器方法低得多的水平测量PM_（10）/ PM_（2.5）浓度。测试结果还表明，燃气源的PM_（10）/ PM_（2.5）排放量显着低于广泛发布的基于热过滤器/冷却撞击器技术的排放因子所建议的水平。根据燃气锅炉和过程加热器的OTM-37平均结果得出的PM_（10）/ PM_（2.5）排放因子约为当前AP-42排放因子的五分之一（并且在某些来源下远低于此值）的测量误差除外）。结果还强调了最佳实践的重要性以及某些重量分析程序在实现精确的燃气源PM_（10）/ PM_（2.5）排放测量中的局限性。

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