COMM-1006EL Lecture 12: Universal Pulp and paper
18 Jul 2015
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Process type: currently, closest to batch ow, particularly when specialty products are produced, specialty-batch size is fairly small, resulting in noticeable downtime for set ups> News print- the process is more continuous: newsprint- process is more continuous-but large xed costs associated with paper making machines lead to speci c implications. 6. 395 million tons of woodchips/yr (730 tonnes/hr *24h/day*365days/year) Converts up to 8 million tons of wood chips to 4 million tons of pulp. 4. 5 million tonnes (2 machines each can convert 2. 25 million tons of pulp into 2. 25 million of paper) Problems to address: balancing the line. 3. 68 tons of newsprint- previous diagram shows excess capacity int he also 2 steps but 7. 36 tons of wood chips are required to produce 3. 68 tons of pulp and. 3. 68 tones of pulp and 3. 68 tons of newsprint-current wood processing capacity is 6. 396 million tones of chips-shortfall of 0. 965 million tons of chips.
