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1. (15 points)An older paper machine at steady-state produces 226 kg/hr of paper at 2.3% moisture at the reel. The sheet at the reel is

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1. (15 points)An older paper machine at steady-state produces 226 kg/hr of paper at 2.3% moisture at the reel. The sheet at the reel is 1.07 m wide and operates at 48.8 m/min. At the couch, the sheet is 19.3% solids and 7.5 cm is trimmed from each edge. The trimmings go into the sewer. Before the headbox, the thick stock (at 2.9% solids) is diluted to the headbox consistency of 0.64% solids using the whitewater from the wire. The excess whitewater is sewered. There are no fiber losses in the press section or the dryer section. 91% of the solids that leave the headbox are retained on the wire. (a) What is the fiber loss to the sewer due to the trim (in kg/hr)? (b) What is flow rate of stock out of the headbox (in kg/hr)? 1. (15 points)An older paper machine at steady-state produces 226 kg/hr of paper at 2.3% moisture at the reel. The sheet at the reel is 1.07 m wide and operates at 48.8 m/min. At the couch, the sheet is 19.3% solids and 7.5 cm is trimmed from each edge. The trimmings go into the sewer. Before the headbox, the thick stock (at 2.9% solids) is diluted to the headbox consistency of 0.64% solids using the whitewater from the wire. The excess whitewater is sewered. There are no fiber losses in the press section or the dryer section. 91% of the solids that leave the headbox are retained on the wire. (a) What is the fiber loss to the sewer due to the trim (in kg/hr)? (b) What is flow rate of stock out of the headbox (in kg/hr)

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