Method of measuring hydrophobic contaminants in a pulp slurry or a papermaking system
US10844544B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2018 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Feb 6, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30124
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of measuring hydrophobic contaminants in a pulp slurry or a papermaking system includes the steps of providing an aqueous paper mill sample, filtering the aqueous paper mill sample to produce a filtrate comprising particles, and collecting an image of the particles in a measured volume of the filtrate. The method also includes the steps of analyzing the image to determine a size and morphology of the particles in the measured volume of filtrate, identifying spherical particles having a size of from about 1 micron to about 20 microns in the measured volume of filtrate, and quantifying a number of the spherical particles having the size of from about 1 micron to about 20 microns in the measured volume of filtrate. This method is useful for papermakers for deposition diagnostics, prevention, and contaminant control treatment optimization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.