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Smelt Spouts

The design, installation and maintenance of smelt spouts, used to discharge liquid smelt from the furnace to the dissolving tank, are important to the safe, reliable operation of Kraft recovery boilers.

Since supplying the first Kraft recovery boiler in 1929, B&W has led the development of many improvements in safer, longer-lasting operation of smelt spout systems. Our latest innovation is a new, boiler wall-mounted hood enclosure design. It is available for our 15- and 30-degree insertable spouts and incorporates a hood-mounted optimally positioned shatter jet assembly.

Design features:

  • Hood is supported from furnace wall
  • Floating seal at dissolving tank extension neck
  • Removable front plate for access to smelt spout without removing the entire hood enclosure
  • Low-profile shatter jet assembly to adjust angles for optimum smelt shattering
  • Dual shatter jet design accommodates primary and backup on same support
  • External wall wash piping to distribute weak wash flow down the inside hood wall to prevent deposits.
Download the Brochure (PDF)

Smelt Spout