| The Mass Spectrometer-based Continuous Emission Monitor (MS-CEM) for organic compounds was developed and evaluated at the Louisiana State University (LSU) Pilot-Scale Rotary Kiln Incinerator (RKI). The MS-CEM consists of stack probe, heat traced sampling line, vacuum pump, particulate filter, Nafion dryer and Extrel mass spectrometer. The Nafion dryer is a special type of dryer that has the ability to remove moisture from the gas sample without removing organic compounds of interest. The mass spectrometer is a quadrupole mass filter. The mass spectrometer includes a computer that controls and optimizes the operation of the unit.;The MS-CEM was tested by injecting a mixture of benzene, toluene, trichloroethylene and dichloroethylene into the baghouse inlet, and a gas sample was continuously extracted from the stack and analyzed for the concentration of these compounds simultaneously on real-time basis. The same procedure was repeated by injecting the organic compounds into a sampling line instead of the baghouse.;The expected concentrations of each component in the stack gas, for the baghouse injection experiment, were calculated and compared with the concentration of each component obtained from the MS-CEM. The results obtained from the MS-CEM, for sampling line injection, were used to calculate the amount of each component detected and quantified. The amount of each component detected and quantify by MS-CEM was compared with the amount of each component in the liquid mixture that was injected into the sampling fine. The Calibration Drift (CD) and the response time were also evaluated. The MS-CEM results were also used to perform modeling of non-ideal flow in the RKI. |
