Case History: Lime Mud Filter Showers

A pulp mill located in Southern Georgia required 140°F wash water for the lime mud pre-coat filter. Located in the recausticizing area, the filter washes and dewaters lime prior to the lime kiln. The wash water provides both an efficient dilution wash of lime mud as well as serving to keep the filter clean, improving drainage. The customer replaced a venturi style heater for two main reasons: severe hammer to filter system piping and wide swings in discharge temperature.