| 摘要 |
<p>A coke dry quenching method for recovering heat in the form of steam in a waste heat boiler using a quenching column comprising a cooling chamber and a prechamber located above by loading red heat coke from above the prechamber, blowing air and/or water or steam into the prechamber, and exchanging sensible heat of the red heat coke in the cooling chamber using an inert gas as a medium. The quantity of steam being recovered is kept at a constant level by regulating the quantity of air and/or water or steam being blown into the prechamber such that the quantity of heat entering the waste heat boiler has a target level, the quantity of combustible gas component and oxygen component in the circulation gas is kept at a minimum level, adhesion of foreign matters to the sloping flue section is prevented, a heat recovery efficiency is prevented from lowering while protecting the boiler tubes against thermal damage, and the quantity of sensible heat being recovered is maximized while preventing increase of circulation gas ventilation resistance and protecting the boiler tubes against damage due to wear.</p> |
