METHOD AND APPARATUS FOR OFF-GAS COMPOSITION SENSING

摘要

An apparatus and method for non-intrusive collection of off-gas data in a steelmaking furnace (100) includes structure and steps for transmitting a laser beam (300) 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 (400) the laser beam transmitted through the off-gas and converting (600) 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.