07.08.2015 Views

Anti slagging coal additive, PentoMag 2550

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Easy removal of slagresiduals<strong>PentoMag</strong> ® <strong>2550</strong> changes the structure of the molten ashdeposits. Instead of solid deposits with very high density,slag residuals will be soft and friable. Their removal willusually not require the maintenance personnel to enter thefirebox. Sootblowing will be sufficient.Improvement of availabilityand reliabilityIntensive <strong>slagging</strong> leads to (sometimes frequent) boileroutages for cleaning. In the best case boiler operationcan continue with reduced load. In any case, <strong>slagging</strong>leads to significant losses due to lost production.Slagging is also dangerous as big agglomerations(eyebrows) can fall down from above the burners orsuperheaters and damage the bottom tubes. It has alsoled to boiler tripping when big lumps of ash fall intothe water-cooled ash collectors, which results in theformation of steam and a pressure increase in the firebox.Regular dosing of <strong>PentoMag</strong> ® <strong>2550</strong> allows uninterruptedboiler operation without load limitation - in the most difficultcases periods between outages will be significantly longerand outage periods respectively shorter.Improvement of boilerefficiencyBoiler fouling obstructs heat exchange in the areassuffering deposit formation, leading to change in fluegas temperature distribution. Intensive deposits in theevaporator area may cause increase of flue gas exittemperature while fouling of superheater surfaces mayresult in too low steam temperature on boiler exit.In both above cases thermal losses can be expected.Experience shows that <strong>PentoMag</strong> ® <strong>2550</strong> dosing maygive noticeable fuel savings by preventing such losses.

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