Control of bin steaming

Details Control of bin steaming Control of bin steaming

D - Textiles, Paper

21

F

92/57.3

D21F 5/08 (2006.01) D21B 1/02 (2006.01)

Patent

CA 1154622

CONTROL OF BIN STEAMING ABSTRACT OF THE DISCLOSURE An apparatus and method are provided for the control of the position of a condensing interface with respect to a steam inlet and an opposed material inlet. Wood chips or the like are introduced into the top of a vertical vessel while steam is introduced adjacent the bottom to flow upwardly toward the top. An elongated strip of metal, having a length of at least about two feet and exhibiting a change in electrical resistance dependent upon temperature in the volume surrounding the strip, is mounted vertically within the vessel between the top and the bottom. The metal strip is operably connected by a circuit which produces an electrical control signal in response to resistivity changes in the metal strip greater than a predetermined amount to a valve for controlling the amount of steam supplied.

384347

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