CONSIDERATIONS FOR APPROPRIATE FLARE SAMPLING AND ANALYSIS

机译：适当的火炬采样和分析的注意事项

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Extracting representative material from a Flare Stack at pressures of only a few inches of water,rntemperatures of 100 to 500 Deg. F, and water concentration of 5 to 30 % requires attention torndetails. Pumping the sample creates a problem with condensing water due to the increase inrnpressure and removing the water may lose target analytes. A vacuum eductor lowers the pressurernand aids in keeping the moisture in the vapor state. The eductor is blocked prior to samplerninjection and the transfer line is allowed to equilibrate to stack pressure. A discrete sample isrninjected quickly and the eductor is returned to service. This procedure is believed to keep therntransfer line clean and provides a fresh representative sample to the analyzer. The transfer line isrnheat traced to reduce condensation and loss of analytes. A Thermal Conductivity Detector [TCD]rnand a Flame Ionization Detector [FID] are needed to make a total component analysis. Utilizingrna simple British Thermal Units [BTU] detector may provide periodic heat content informationrnand reduce the number of measured components. Data can be collected with a conventionalrnLaptop PC, signal interface, and chromatographic software. A pressure sensor between thernsample loop and the block valve can be used to monitor stack pressure and eductor performance.rnMeasurement of only the major components may also simplify determination of the targetrnanalytes and packaging of a field mounted system.

机译：在仅几英寸水柱压力，100至500度的温度下从火炬烟囱中提取代表性材料。 F，且水的浓度为5％至30％时，请注意细节。泵送样品会因水压升高而产生冷凝水的问题，去除水可能会丢失目标分析物。真空喷射器降低压力，并帮助将水分保持在蒸气状态。在进样前，应关闭喷射器，并允许传输线平衡至烟囱压力。快速注入离散样品，喷射器重新投入使用。相信该程序可保持传热管线清洁，并为分析仪提供新鲜的代表性样品。追踪传输线，以减少冷凝物和分析物损失。需要进行热导率检测器[TCD] rn和火焰离子化检测器[FID]进行总成分分析。利用简单的英国热量单位[BTU]检测器可以提供周期性的热量信息，并减少被测组件的数量。可以使用常规的便携式笔记本电脑，信号接口和色谱软件来收集数据。样品环路和截止阀之间的压力传感器可用于监视烟囱压力和喷射器性能。仅测量主要成分也可以简化目标分析物的确定和现场安装系统的包装。

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来源
《The proceedings of AD 2007: Process control amp; compliance: analytical solutions》|2007年|p.13-24|共12页
会议地点 Houston TX(US);Houston TX(US)
作者
John M. Burkland; Jimmy G. Converse;
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Technical Automation Services Corporation TASCrn2000 NASA ParkwayrnSeabrook, Texas 77586;

Technical Automation Services Corporation TASCrn2000 NASA ParkwayrnSeabrook, Texas 77586;

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会议组织
原文格式 PDF
正文语种 eng
中图分类成分分析仪器;
关键词
flare sampling; composition; vacuum eductor; heat content; modular analyzer;

机译：火炬采样;成分;真空喷射器;热量;模块化分析仪;

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CONSIDERATIONS FOR APPROPRIATE FLARE SAMPLING AND ANALYSIS

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