Importance

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Abstract

A washing system for washing a fiber suspension associated with a fiber stock preparation system, includes a plurality of rolls and a porous fabric carried by the plurality of rolls in a closed loop. The closed loop includes a lower run defining a washing zone, with the porous fabric moving in a running direction through the washing zone. The porous fabric has an upper surface in the washing zone which carries the fiber suspension thereon. A headbox is positioned with the closed loop and above the porous fabric at an upstream end of the washing zone. The headbox discharges a fiber suspension to be washed onto the upper surface of the porous fabric. An accept removal device is positioned within the closed loop and above the porous fabric at a downstream end of the washing zone. A plurality of showers, each having an inlet, are positioned within the closed loop and above the porous fabric in the washing zone between the headbox and accept removal device. A plurality of dewatering elements are positioned below the fabric in the washing zone. Each dewatering elements is configured for removing water from a bottom surface of the porous fabric. An effluent tank has a plurality of compartments, with each compartment having an inlet and an outlet. At least one outlet of the effluent tank is connected with a corresponding shower inlet. A plurality of drainage pans are positioned below the lower run of the porous fabric. Each drainage pan is associated with at least one dewatering element and has an outlet. Each drainage pan outlet is connected with a corresponding effluent tank inlet.

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First Claim