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11	Shattering Kraft Recovery Boiler Smelt by a Steam Jet Taranenko, Anton 19 March 2013 (has links) Kraft recovery boiler smelt is shattered into small droplets by an impinging steam jet to prevent smelt-water explosions in the dissolving tank. Inadequate shattering increases the likelihood of dissolving tank explosions. While industry has not dedicated much effort to smelt shattering, the safety implications require smelt shattering to be studied in detail. An experimental set-up was constructed to simulate the shattering operation using a water-glycerine solution and air instead of smelt and steam respectively. The objective was to examine how physical properties and flow characteristics affect shattering. It was found that increasing shatter jet velocity greatly reduced droplet mean diameter. Increasing the liquid flow rate greatly increased droplet size, as expected. Shattering was not significantly affected by viscosity, unless a weak shatter jet was used on a highly viscous fluid. Increasing the proximity of the shatter jet nozzle decreased droplet size. pulp and paper kraft recovery cycle recovery boiler smelt shattering steam jet atomization droplet size smelt-water explosion dissolving tank explosions water-glycerine solution air jet shatter jet velocity effect liquid flow rate effect viscosity effect shatter jet nozzle proximity effect 0542