Furnaces – With control means responsive to a sensed condition
Patent
1990-05-08
1991-04-30
Favors, Edward G.
Furnaces
With control means responsive to a sensed condition
110186, 236 15E, 431 76, F23N 500
Patent
active
050108271
ABSTRACT:
An apparatus for detecting the presence of carryover particles in an upper region of a furnace, such as a smelt bed boiler, includes plural spaced apart detectors. These detectors monitor discrete portions of the interior of the furnace for the purpose of detecting carryover particles in such monitored portions. Signals indicative of the carryover particles are processed to obtain a count of the carryover particles. The carryover particle count may then be displayed. For example, the signals from all of the detectors may be averaged with trends and overall changes in count rates then displayed. In addition, the counts from the individual detectors may also be displayed to assist an operator in locating the source of excessive carryover particles in the furnace. An image sensor, such as a charged coupled device (CCD) detector, may be used to provide a visual display of detected carryover particles. The information on carryover particle count may be used in controlling parameters affecting the performance of the furnace directly, or indirectly by way of operator input.
REFERENCES:
patent: 3814570 (1974-06-01), Guigues et al.
patent: 3830969 (1974-08-01), Hofstein
patent: 4359950 (1982-11-01), Leffler et al.
patent: 4539588 (1985-09-01), Ariessohn et al.
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patent: 4814868 (1989-03-01), James
An article by Mark J. Anderson et al., entitled "Monitoring of Recovery Boiler Interiors Using Imaging Technology", published in Apr. of 1989 by a division of Weyerhaeuser Co.
An article published in Sep. of 1987 by the Sensor & Simulation Products division of Weyerhaeuser Co. entitled, "System Insight-The Value of the Smelt Bed Imaging System".
Kychakoff George
Ort Gene P.
Favors Edward G.
Wyerehaeuser Company
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