Electric Power Research Institute Incorporated

The Babcock & Wilcox Company

Mcdermott Technology, Inc.

Charles C Stauffer

Dennis J Connolly

Jack K Schmotzer

Larry A Jeffers

John M Rackley

Bart A Stuchell

Richard W Dye

Jack M Kibler

Nicholas J Mravich

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.

X-ray fluorescence analysis of pulverized coal

The present invention relates to an apparatus and a method for the determination of the concentration level of a particulate analyte in a moving liquid, said apparatus comprising:

On-line monitor for particulate analyte in a moving liquid

A method and apparatus for monitoring and measuring the level of ion exchange resin fragments in very pure water employs a laser light source to illuminate a water sample causing the resin fragments to fluoresce. This light of fluorescence is focused, filtered, and detected by a photodetector, whose electrical signal output is amplified and processed to provide an output related to the concentration of ion exchange resin fragments in the water. Separate calculations or a computer within the apparatus itself produce a measure of the concentration of the resin fragments in the sample. The apparatus and method are useful for maintaining purity of water in boilers employing condensate polisher systems, for example.

Method and apparatus for monitoring and measuring the concentration of

An apparatus for simultaneously acquiring a plurality of samples of ionic and particulate impurities from a fluid stream by means of a plurality of filter pairs.

Automated membrane filter sampler

Growing community of inventors

Beloit, OH, United States of America

Charles C Stauffer