METHOD OF INHIBITING ADHERENCE OF SLAGS TO PETROLEUM COKE COMBUSTION FURNACE

摘要

PURPOSE:To inhibit the adherence of slags to the petroleum coke combustion furnace by applying a liquefied slagging inhibitor and a powdery slagging inhibitor to the high-temperature portion of the petroleum coke combustion furnace during the regular repair period of a boiler, and at the time of operation, mixing or charging directly the slagging inhibitor in potroleum cokes. CONSTITUTION:As slagging inhibitors used, those having effective components of a member or two members or more of compounds of Ca, Mg, Al, Si, Fe and the like, can be used. The slagging inhibitor is applied by spraying or the like to the high-temperature portion within the furnace in a liquid type in the form of a water slurry prepared by dispersing the slagging inhibitor in water or in the form of an aqueous solution prepared by dissolving the slagging inhibitor in water. Further, the slagging inhibitor in a powder type as it is left in the form of powder is applied further thereon by spraying or the like thereby to form a coating layer. The slagging inhibitor has a remarkable effect of softening ashes, and ashes which have once adhered to the wall surface and the like of the combustion furnace are changed to have a property easily removed thereform, and are easily exfoliated by soot blowing and the like, thus slagging is suppressed thereby.