Method and Apparatus for Off-Gas Composition Sensing

Document Type

Patent

Publication Date

11-16-1999

First Page

1

Last Page

24

Abstract

An apparatus and method for non-intrusive collection of off-gas data in a steelmaking furnace includes structure and steps for transmitting a laser beam through the off-gas produced by a steelmaking furnace, for controlling the transmitting to repeatedly scan the laser beam through a plurality of wavelengths in its tuning range, and for detecting the laser beam transmitted through the off-gas and converting the detected laser beam to an electrical signal. The electrical signal is processed to determine characteristics of the off-gas that are used to analyze and/or control the steelmaking process.

Comments

U.S. Patent No. 5,984,998

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