Improved apparatus and method for deinking waste paper pulp

Details Improved apparatus and method for deinking waste paper pulp Improved apparatus and method for deinking waste paper pulp

B - Operations, Transporting

03

D

B03D 1/24 (2006.01) B01D 17/035 (2006.01) B01D 21/00 (2006.01) B03D 1/02 (2006.01) B03D 1/14 (2006.01) C02F 1/24 (2006.01) D21B 1/32 (2006.01) D21C 5/02 (2006.01) D21F 1/70 (2006.01)

Patent

CA 2117071

2117071 9304784 PCTABS00020 An apparatus (12) and method for deinking waste paper pulp using a foam flotation process to recycle printed waste paper for the manufacture of new paper. Pulped printed paper is fed as a slurry to an inlet (26) of a shallow tank (14). Internal guide walls (16) in the tank (14) establish a flow path (26) from the inlet to an outlet (28). The walls (16) are sized and positioned to create a generally uniform cross-sectional flow area. A plurality of modules (20) are disposed along the flow path (18). Each module (20) includes at least one injector (22) that aerates the flow and an extractor (24) that removes floated ink foam. A portion of the flow from each module (22) is recycled to an upstream module, preferably by a conduit (46a) and associated pump (46b). In a preferred form, an injector (22) (or injectors) alone located at the inlet is fed by the next downstream module (22) and an extractor (24) alone is located near the outlet (28). The invention also includes a main recycling loop (50) from the downstream end (18a) of the flow path to the upstream end. This main recycling loop (50) has a large flow rate compared to the recycled flow between the modules (22).

Affiliated with

Also associated with

Rating

Improved apparatus and method for deinking waste paper pulp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Improved apparatus and method for deinking waste paper pulp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved apparatus and method for deinking waste paper pulp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1432593