STEAM EXPLOSIONS IN BOILER ASH HOPPERS

被引：2
作者：
STANMORE, BR
DESAI, M
机构：
[1] Department of Chemical Engineering, University of Queensland
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY | 1993年 / 207卷 / A2期
关键词：
D O I：
10.1243/PIME_PROC_1993_207_022_02
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Steam explosions are experienced in the ash hoppers of coal-fired boilers when hot ash falling from heat-transfer surfaces enters the water pool. Pellets of ash from three Australian power stations were formed in the laboratory and sintered under different conditions to simulate boiler ash deposits. When these were reheated and dropped into water, explosions were generated in isolated cases. The offending pellets were all lightly sintered and disintegrated into individual ash grains. The occurrence of explosions is unpredictable because of the extremely limited range of ash lump conditions under which they appear.
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页码：133 / 142
页数：10
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共 11 条
  • [1] Buchmueller H.A., Ash extraction from lignite burning furnace, Power Engng, pp. 49-53, (1978)
  • [2] Sligar J., Explosions in the ash hoppers at Eraring Power Station, Conference on Coal ash in combustion systems, Newcastle, NSW, (1985)
  • [3] Reid R.C., Rapid phase transitions from liquid to vapour, Adv. Chetn. Engng, 12, pp. 105-208, (1983)
  • [4] Lee J.H.S., Frost D.L., Steam explosions — major problems and current status, Dynamics of explosions: progress in astronautics and aeronautics., 114, pp. 436-450, (1987)
  • [5] Frost D.L., Ciccarelli G., Dynamics of explosions: progress in astronautics and aeronautics, 114, pp. 451-472, (1987)
  • [6] Burgess J.M., Vapour explosions in water induced by the cooling of hot solids, Third Australasian Conference on Heat and mass transfer, Melbourne, pp. 497-504, (1985)
  • [7] Bradfield S., Liquid-solid contact in stable film boiling, Ind. and Engng Chem. Fundamentals, 5, pp. 200-204, (1966)
  • [8] Petersen W., Strength testing, Braunkohle, Wärme und Energie, 7, (1985)
  • [9] Bernhardt D.H., Williams P.C., The sintering test, an index to ash-fouling tendency, Trans. ASME, pp. 1229-1236, (1956)
  • [10] Jung B., Schobert H.H., Viscous sintering of coal ashes. 1. Relationships of sinter point and sinter strength to particle size and composition, Energy and Fuels, 5, pp. 555-560, (1991)
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