DIGESTER LIQUOR HEATERS Digester Liquor Heaters are installed with both batch and continuous digesters. The theory of digester liquor heaters is to provide a positive flow of liquor throughout the digester and to assure equal distribution of heat to all of the chips. The Lundberg Digester Liquor Heaters are indirect (tube and shell) heat exchangers. The tubes and channels are normally T-304L stainless steel, while the shell is carbon steel. The liquor flows inside of the tubes and the steam is on the shell side. The Lundberg heater is designed with maintenance in mind. The heads may be removed, without removal of any piping, for ease of inspection and cleaning. The shell side incorporates an expansion joint for longevity of both the tubes and the shell.

Digester Heater Inquiry Date:_______________ Reference: _____________ DIGESTER HEATER INQUIRY Wood Supply, Species _______________________ Chip Moisture, %_________________________ Digester, Volume    _________________________     Diameter    __________________________     Height    __________________________     Shell Material    __________________________     Thickness    __________________________     Lining Material    __________________________     Thickness    __________________________ Charge to Digester Wet Chips, Weight_________________________     Chip Moisture    ________ %OD _______ %H2O     Temperature    ___________________________     Cooking Liquor, Type    ________________________     Volume    ___________________________     Specific Gravity    __________________________     Temperature, In    __________________________     Dilution Liquor, Type    _________________________     Volume    __________________________ Specific Gravity _________________________ Temperature, In __________________________ Cooking Schedule     Initial Heating Time,    min. ____________________________     To Temperature, ____degree F. _________ pressure_____psig Final Heating Time ______________________________ To Temperature, min. _____________________________     Cooking Time    ____degree F._________ pressure _______psig At Temperature    min. ______________________________ Total Time of Cook min.___________________________________ Steam Pressure Available    _______________________________ (state if gauge or absolute) Steam Temperatures    _________________________________

Mill Data - (Include with all Inquires) Date:______________ Reference: _____________ MILL DATA SHEET Please provide the following for all inquires From:    Company______________________________________________ Address ______________________________________________ Contact ________________________________________________ Phone (_______) ______________________ General Mill Data: Type of Mill ________________________________________ Production Capacity__________________________________________________ Mill Elevation__________________________________________________ Temperature Extremes _____________________________________________ Cooling Water Temperature (summer)_______________________     (winter)______________________ Mill Power, Electrical    (Hertz)______________________     (Volts)______________________     Steam Pressures ______________________________ Planned Location: Inside Building__________Existing _____ New ______     Outside _______________________________________ Steam Cost________________________________________ Electrical Cost________________________________________