Invention Grant
- Patent Title: System for managing solids in papermaking whitewater
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Application No.: US17595143Application Date: 2020-05-07
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Publication No.: US12043961B2Publication Date: 2024-07-23
- Inventor: Joseph P. McDonald
- Applicant: Joseph P. McDonald
- Applicant Address: US WI Appleton
- Assignee: Joseph P. McDonald
- Current Assignee: Joseph P. McDonald
- Current Assignee Address: US WI Appleton
- Agency: Bell & Manning, LLC
- International Application: PCT/US2020/031770 2020.05.07
- International Announcement: WO2020/231721A 2020.11.19
- Date entered country: 2021-11-10
- Main IPC: D21F1/66
- IPC: D21F1/66 ; D21C11/00 ; D21F1/68 ; D21F1/72 ; D21H17/01

Abstract:
Methods and systems for reducing the loss of usable fibers from whitewater while simultaneously increasing paper making machine performance and paper quality are provided. The methods and systems utilize a fractionating saveall to separate whitewater into a dilute wastewater fraction that contains unwanted fine particles and a thicker consistency reusable fraction containing paper-forming fibers. The reusable fraction is recirculated back into the whitewater stream, while the wastewater is routed away from the whitewater stream.
Public/Granted literature
- US20220195668A1 SYSTEM FOR MANAGING SOLIDS IN PAPERMAKING WHITEWATER Public/Granted day:2022-06-23
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