Appeal No. 1998-2354
Application 08/054,588
be off-gassed before and/or after the second mixer to adjust
the quantity of oxygen in the pulp (col. 4, lines 26-27;
figure 2).
Edlund discloses discharging cooked lignocellulose
materials from a digester by supplying a gas to the upper
portion of the digester such that the gas pressure and static
pressure due to
4
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