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US 11,828,459 B2Granted
Cleaning of a recovery boiler
AssigneeVaro Teollisuuspalvelut Oy
InventorTimo Karjunen
Life of this patent
Estimating the term…
Abstract
A method and apparatus for cleaning a black liquor recovery boiler, where a furnace floor of the boiler is washed by mixing wash water in a wash water pool formed on the floor by at least one mixing device in the wash water pool, and by jetting wash water towards the floor by at least one pressure washer installed into the furnace through an opening in the furnace wall.
Claims17
A method for cleaning a black liquor recovery boiler, comprising washing a floor of a furnace of the boiler, said washing comprising:
- mixing wash water in a wash water pool formed on the floor by at least one mixing device in the wash water pool;
- mechanically removing solidified smelt on the floor by jetting wash water towards the floor by at least one pressure washer installed into the furnace through an opening in a wall of the furnace, and
- starting said mixing the wash water in the wash water pool prior to starting said jetting of wash water by the at least one pressure washer,
- wherein the water pressure used in the at least one pressure washer is 40 MPa or greater.
1 more element
Dependencies are inferred from the claim text.