| 英文摘要 |
The purpose of this project is to develop the measurement technology of high heating value in stacks and provide reference of testing methods to Environmental Analysis Laboratory, EPA.
Achievements in the implementation: development of direct measurement method for analyzing high heating value of flare emissions which can be more intuitive and high heating value is calculated directly and precisely. Emission gas from stacks is introduced into the analysis units and the gas is mixed with fuel. The measured changes in the flame temperature through a heat value was calculated. Boot to system stability takes 1 hours, zero and full-size correction takes about 90 seconds of time reading to stabilize (T90). Calibration curve from methane to be determined by the methane concentration of the heating value 46-1012 BTU/ft3, the measured results with the theoretical value compared between 90.91-99.41%, the error range is less than 10% of the analyzed. Propane, Hydrogen and Toluene with methane calibration curve analysis the theory value and the actual value can be found in the error range of less than 20%. The method to measure the accuracy of 100.03 ± 1.35%, the precision of 0.68%.
Seven performances measured results show good positive correlation (R2 = 0.8572-0.9844) of the high heating value with continuous monitoring method and chromatography method. Continuous monitoring method and results analysis with THC monitoring results generally have the same trend.
Implementation of the policy side, based on the research and technological achievements of this project, we proposed that this direct continuous monitoring method can be established in the monitoring of the high heating value in stacks. This project is completed within the schedule and to provide draft standard method.
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