| 摘要 |
<p>The present invention relates to an extraction and air/water cooling system (1) and energy recovery for large flows of heavy ashes, produced by solid fuel boilers (100), able to reduce final temperature of the extracted ash, without increasing the air flow entering the throat of the boiler, amount usually fixed by the boiler designers at a value around 1.5% of the total combustion air. When the air flow needed for cooling process exceeds the maximum flow admissible in the boiler, the system allows to the exceeding air and to the possible steam to be sent to the fume duct in the most appropriate point, or in atmosphere, thanks to a separation of the cooling environment made by the ash itself, made inert, if needed, by injection of combustion fumes taken, by means of a dedicated fan (43), downstream of the system for treating boiler fumes, before access to the chimney (103).</p> |
