The Babcock & Wilcox Company

Mcdermott Technology, Inc.

Bart A Stuchell

Dennis J Connolly

Walter R Mohn

Charles C Stauffer

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

Growing community of inventors

Alliance, OH, United States of America

Bart A Stuchell