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Korean Chemical Engineering Research,
Vol.43, No.3, 412-418, 2005
Vol.43, No.3, 412-418, 2005
상용 순환 유동층 연소로 수관벽 전열관 두께 지도
A Tube Thickness Map of Water Wall in a Commercial Circulating Fluidized Bed Combustor
상용 순환 유동층 연소로(200 ton steam/hr, 4.97×9.90×28.98 m)의 수관벽에서 전열관의 두께분포를 측정하였으며, 전열관 마모를 고찰하였다. 전열관의 두께는 초음파 측정방법을 이용하여 측정되었다. Splash 영역에서 윙월을 포함한 모든 수관벽 전열관의 마모가 심하게 발생하였다. 전면과 후면의 수관벽 하부 옆면벽에 가까운 양편에서 마모가 더 큰 것으로 나타났다. 기체출구 부근벽의 일부 전열관에서 상당한 전열관 마모가 발생되었다. 윙월에서는 연소로 단면의 내부로 들어올수록 전열관의 마모가 증가되는 것으로 나타났다.
The tube thickness map of water wall has been measured in a commercial circulating fluidized bed combustor (200 ton steam/hr, 4.97×9.90×28.98 m height) with ultrasonic method and tube erosion has been discussed. Severe tube erosion took place in the splash region on all waterwalls including wingwalls. Erosion on the lower part of front and rear walls, close to both side walls, was more serious than other places. Erosion of some tubes around the gas exit was found to be noticible. Tube erosion increased on the wingwall as the position of the tube become closer to the center of the combustor crosssection.
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