Distributed Fiber Optic Sensor for On-line Monitoring of Coal Gasifier Refractory Health


Microscope image of the darkened segment of<br/>gold coated fiber after 1000°C annealing in Inconel alloy tube.
Microscope image of the darkened segment of
gold coated fiber after 1000°C annealing in Inconel alloy tube.
Virginia Polytechnic Institute and St. Univ. - OSP
Website:  Virginia Polytechnic Institute and State University
Award Number:  FE0005703
Project Duration:  05/01/2011 – 10/31/2015
Total Award Value:  $1,832,666
DOE Share:  $1,464,574
Performer Share:  $368,091
Technology Area:  Plant Optimization Technologies
Key Technology:  Sensors & Controls
Location:  Blacksburg, Virginia

Project Description

In this three year project, Virginia Tech Center for Photonics Technology will develop a first-of-a-kind, high-temperature distributed sensing platform capable of monitoring the space- and time-varying thermal properties of an entrained flow gasifier refractory wall. The sensor operates using optically-generated transient, traveling long-period gratings in a photonic crystal optical fiber to achieve fully-distributed measurement of temperatures above 1000°C with centimeter-level spatial resolution.

Project Benefits

This project will develop a high-temperature distributed sensing platform for monitoring a gasifier's refractory wall. Direct measurement technology will enable early detection of hot spots in the refractory wall, expand the capability for comprehensive on-line monitoring of refractory health, and improve gasifier availability by reducing the frequency of refractory maintenance. The expected impact of this technology is ower operating costs through reduced forced outages in power generation systems.

Contact Information

Federal Project Manager 
Maria Reidpath: maria.reidpath@netl.doe.gov
Technology Manager 
Robert Romanosky: robert.romanosky@netl.doe.gov
Principal Investigator 
Anbo Wang: Awang@vt.edu

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