Biomedical Engineering Reference
In-Depth Information
4.16. A pulp mill utilizing the saw dust from nearby lumber mills to produce a market pulp
for paper production. A recent development had the company thinking of increasing
the pulp production by 50% for entering the nonwoven market. A close examination at
the pulp mill has the engineers to conclude that the digesters were the bottleneck.
Currently, the woodchips were steamed, mixed with a pulping liquor, and underwent
delignification at 150 C for 3 h. For each load of woodchips, a minimum of 2 h is
needed for loading, heating the digester up, explosive decompression unloading, and
cleaning up the digester for the next load. Your task is to find a way to ease the
bottleneck quickly at a low cost. State your assumptions clearly and your solution to the
problem as stated.
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