Method and apparatus for controlling cellulose processing
Inventors
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Assignees
Member
Glycos Biomedical LtdWe are UK/US entity with a team based in Maryland and North Carolina comprising an expert team that has linked triggers to disease states including TBI and acute injuries associated with radiation, acute lung injury and infection.
We are UK/US entity with a team based in Maryland and North Carolina comprising an expert team that has linked triggers to disease states including TBI and acute injuries associated with radiation, acute lung injury and infection.
Publication Number
US-12625058-B2
Publication Date
2026-05-12
Expiration Date
Abstract
A solution for controlling cellulose processing comprises performing (200) optically first measurements of the cellulose during the processing, performing (202) second measurements of the cellulose by directing (204) optical radiation to the cellulose, the radiation comprising at least one beam that is polarized and at least one separate beam is non-polarized, measuring (206) attenuations and parameters of polarization of the radiation interacted with the cellulose and determining size of particles in the cellulose based on at least one comparison of the parameters of polarization and the attenuations. The processing is controlled (208) based on the first measurements until a given threshold of the first measurements has been reached and thereafter controlling the processing based on the second measurements.
Core Innovation
The disclosed invention controls cellulose processing by performing first measurements during processing. The first measurements include measuring drainability of the cellulose during the processing and monitoring a variation of drainage, or measuring optically a size of particles in the cellulose during the processing. The processing is controlled based on the first measurements until a given threshold of the first measurements has been reached.
After the given threshold is reached, the control switches to a second measurement stage. In the second measurements, optical radiation is directed to the cellulose, with at least one polarized beam and at least one separate non-polarized beam. Attenuations and parameters of polarization of the radiation interacted with the cellulose are measured, and the size of particles in the cellulose is determined based on at least one comparison of the parameters of polarization and the attenuations.
The concept is implemented with a cellulose processing arrangement and a controller performing synchronized measurements and determining particle size from the comparison of polarization and attenuation parameters. The arrangement includes a data processing unit and a control arrangement for controlling the processing based on the first measurements until a threshold is reached and thereafter controlling based on the second measurements.
Claims Coverage
The independent claim provides a two-stage feedback approach with a switch-over based on first-measurement thresholds. It includes three inventive features.
Two-stage control of cellulose processing using first measurements until a threshold, then switching to second measurements
Controlling the processing based on the first measurements until a given threshold of the first measurements, including the variation of drainage measurements or a predetermined size of the particles, has been reached and thereafter controlling the processing based on the second measurements.
First measurements based on drainability variation monitoring or optical particle-size measurement
Performing first measurements of the cellulose during the processing, including measuring drainability of the cellulose during the processing and monitoring a variation of drainage measurements, or measuring optically a size of particles in the cellulose during the processing.
Second measurements using polarized and non-polarized optical radiation with attenuation and polarization comparison
Performing second measurements of the cellulose, including directing optical radiation to the cellulose comprising at least one polarized beam and at least one separate non-polarized beam; measuring attenuations and parameters of polarization of the radiation interacted with the cellulose; and determining the size of particles in the cellulose based on at least one comparison of the parameters of polarization and the attenuations.
Overall claim coverage centers on performing first measurements during cellulose processing to drive control until a threshold is reached, and then determining particle size in a second stage using polarized and non-polarized optical radiation with measured attenuation and polarization parameters compared to yield particle size for subsequent processing control.
Stated Advantages
Documented Applications
No documented applications found
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