Title:
METHOD AND APPARATUS FOR IMPROVED PROCESS CONTROL IN COMBUSTION APPLICATIONS
Document Type and Number:
WIPO Patent Application WO2002001190
Kind Code:
A3
Abstract:
This invention relates to a method and apparatus for improved process control in combustion applications, and particularly those relating to the steelmaking industry. An apparatus is provided for process control in a combustion application comprising a laser to transmit a near-infrared laser beam through off-gas produced by the combustion application, a detector to detect the transmitted laser beam and convert the detected laser beam to an electrical signal, and a control system for providing adjustment of select inputs to the combustion application in response to the electrical signal from the detector. The method of this invention comprises transmitting a near-infrared laser beam through off-gas produced by the combustion application, detecting the transmitted laser beam, and adjusting select inputs of the combustion application in response to the detected transmitted laser beam.
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Inventors:
THOMSON MURRAY (CA)
NIKKARI JASON J (CA)
MACKAY GERVASE I (CA)
CHANDA ALAK (CA)
NIKKARI JASON J (CA)
MACKAY GERVASE I (CA)
CHANDA ALAK (CA)
Application Number:
PCT/CA2001/000915
Publication Date:
August 08, 2002
Filing Date:
June 26, 2001
Export Citation:
Assignee:
THOMSON MURRAY (CA)
NIKKARI JASON J (CA)
MACKAY GERVASE I (CA)
CHANDA ALAK (CA)
NIKKARI JASON J (CA)
MACKAY GERVASE I (CA)
CHANDA ALAK (CA)
International Classes:
B08B7/00; B23K1/00; B23K1/008; B23K1/012; B23K1/20; C21C5/46; C21C5/52; F23N5/00; F27B3/28; G01N21/35; H05K3/34; F27B3/08; F27B3/22; (IPC1-7): G01N21/35; F23N5/00; G01N21/39
Foreign References:
| US5954855A | 1999-09-21 |
Other References:
BAER D S ET AL: "Advanced diode-laser absorption sensors for combustion monitoring and control", ADVANCED SENSORS AND MONITORS FOR PROCESS INDUSTRIES AND THE ENVIRONMENT, BOSTON, MA, USA, 4-5 NOV. 1998, vol. 3535, Proceedings of the SPIE - The International Society for Optical Engineering, 1999, SPIE-Int. Soc. Opt. Eng, USA, pages 16 - 23, XP008001488, ISSN: 0277-786X
See also references of EP 1409992A2
See also references of EP 1409992A2
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