A system for detection and control of deposition on pendant tubes in recovery
and
power boilers includes one or more deposit monitoring sensors operating in infrared
regions and about 4 or 8.7 microns and directly producing images of the interior
of the boiler. An image pre-processing circuit (95) in which a 2-D image
formed by the video data input is captured, and includes a low pass filter for
performing noise filtering of said video input. An image segmentation module (105)
for separating the image of the recovery boiler interior into background, pendant
tubes, and deposition. An image-understanding unit (115) matches derived
regions to a 3-D model of said boiler. It derives a 3-D structure the deposition
on pendant tubes in the boiler and provides the information about deposits to the
plant distributed control system (130) for more efficient operation of the
plant pendant tube cleaning and operating systems.
