The Babcock & Wilcox Company

Electric Power Research Institute Incorporated

Mcdermott Technology, Inc.

Dennis J Connolly

Charles C Stauffer

Bart A Stuchell

John M Rackley

Walter R Mohn

Nicholas J Mravich

Richard W Dye

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

A method and apparatus for measuring a target analyte diffused in a wall of a metal member provides a sample of the metal member which is cut to progressively reduce a wall thickness of the sample from zero at a first point on the sample to a selected depth at a second point on the sample. An x-ray analyzing system having an analyzing slot is moved past the sample between the first and second points. Data from the x-ray analyzing system during the translation of the sample is collected to analyze the analyte content.

Measurement system for chromium content in chromized layers and the like

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

An apparatus and method for the measurement of low levels of carbon dioxide in a sample employing membrane separation and ion-exchange technology. The difference in acid strength of carbonic acid and other acids is exploited by treating the sample with a weak base in a membrane separator (10). In this manner, the carbonic acid is distinguished from the stronger acids.

Aqueous carbon dioxide monitor

An apparatus and method for the measurement of low levels of carbon dioxide in a sample employing membrane separation and ion-exchange technology. The difference in acid strength of carbonic acid and other acids is exploited by first treating the sample with a weak base in a membrane separator and then with a strong base in the membrane separator. In this manner, the carbonic acid is distinguished from the stronger acids. By converting carbonic acid to sodium carbonate, the conductivity level is enhanced facilitating more precise measurements.

Growing community of inventors

Alliance, OH, United States of America

Dennis J Connolly