Pulse or digital communications – Repeaters – Testing
Patent
1997-04-02
1998-10-06
Porta, David P.
Pulse or digital communications
Repeaters
Testing
378208, G01N 23223
Patent
active
058188991
ABSTRACT:
An on-line X-ray fluorescent monitoring system uses a probe having an X-ray transmitter and a fluorescent X-ray detector placed adjacent a recessed chamber in a coal feed line having an X-ray transparent window. Pulverized coal traveling through the coal feed line collects in the recessed chamber and rests against the X-ray transparent window where it is bombarded by excitation X-rays from the transmitter. The probe receives fluorescence from the X-ray excited coal and transmits the data to a data acquisition and control means for analysis and use. A pressurized air tube is provided at the base of the recessed chamber for blowing accumulated pulverized coal out of the recessed chamber and back into the feed line, thereby allowing a new sample portion of pulverized coal to settle into the recessed chamber for analysis. The on-line analyzer can also be used to determine concentrations of other elements of interest in the pulverized coal, such as iron, chlorine, etc.
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Connolly Dennis J.
Dye Richard W.
Mravich Nicholas J.
Stauffer Charles C.
Stuchell Bart A.
Edwards R. J.
Marich Eric
McDermott Technology Inc.
Porta David P.
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