Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1997-05-27
2000-01-04
Nguyen, Dean T.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 49, 162263, 356222, 356335, 356336, 377 10, D21B 108
Patent
active
060105933
ABSTRACT:
A process and device for continuously measuring the quantity of particles spended in a liquid, which exist in at least two different physical states, such as detached or attached within the paper pulp. A separation assembly separates the particles into divisions depending on their size, and the separation assembly is continuously fed with liquid via an input pipe. A measuring and processing assembly has two channels or ducts coming from the separation assembly and are provided with translucent windows. A measurement and capture unit illuminates the windows, and at least two cameras located opposite each of the respective windows are synchronized with the illumination unit to capture, at regular intervals, an image of the windows. A system for digitizing the captured images and processing them to determine the quantity of particles for each physical states is forwarded to an output unit in a digital or analog form.
REFERENCES:
patent: 4075462 (1978-02-01), Rowe
patent: 4911025 (1990-03-01), Soderling
patent: 4931660 (1990-06-01), Mayer
patent: 5191388 (1993-03-01), Kilham
Eymin Petot Tourtollet Guy
Julien Saint Amand Fran.cedilla.ois
Perrin Bernard
Sabater Jacques
Centre Technique de L'Industrie des Papiers, Cartons et Cellulos
Nguyen Dean T.
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