D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
92/60.1, 8/78.1,
D21C 3/22 (2006.01) D21C 7/16 (2006.01)
Patent
CA 1094760
ABSTRACT OF THE DISCLOSURE A method and apparatus for the control of gaseous and volatile combustibles in a cellulose pulp delignifying and bleach- ing oxygen reactor to maintain the concentration of combustibles below explosive levels. A fan withdraws gaseous and volatile combustibles mixed with oxygen from the top of a conventional oxygen reactor, and passes at least a portion of the withdrawn gases through a combustion chamber having hot catalytic wires or the like disposed therein. Thorough mixing of the gases may be effected before they are brought into contact with the catalytic wires. The combustible components of the gases in the combustion chamber are combusted, and the gases exiting from the combustion chamber are cooled and then returned to the oxygen reactor. A bypass line in fluid circuit parallel with the combustion chamber is provided, and an adjustable bypass valve is disposed in the bypass line. The adjustment of the bypass valve controls the amount of gas flowing through the combustion chamber and the amount flowing directly back to the reactor. Cooling means may also be provided in the bypass line and the temperature in the r actor controlled thereby.
263316
Goudreau Gage & Associates
Kamyr Inc.
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