System and method of dynamic corrective enzyme selection and formulation for pulp and paper production

Patent metadata

Field	Value
Publication number	US-12286754-B2
Application number	US-202418739525-A
Country	US
Kind code	B2
Filing date	Jun 11, 2024
Priority date	Dec 14, 2020
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

Systems and methods as disclosed herein automatically provide real-time dosing corrections for an industrial process wherein enzyme blends are applied to natural fibers for pulp/paper production. An initial enzyme blend (e.g., enzymes and supporting formulation components, as relevant) and respective dose rates are selected to be applied based on expected fiber surface substrate characterization, expected fiber quality characterization, the physical conditions of the system being treated, respective characteristics of the initially selected enzyme blend components, etc. Upon application of the initial enzyme blend, online sensors provide real-time feedback data corresponding to measured actual values for the fiber surface substrate characterization and fiber quality characterization. A replacement enzyme blend (enzymes and supporting formulation components) and respective dose rates thereof is dynamically selected based on the feedback data. The enzyme dosing stage can be optimized responsive to product changes and/or variations in fiber sources/blend and/or physical conditions, substantially in real time.

First claim

What is claimed is:

1. A system for automatically providing real-time dosing corrections in an industrial process wherein one or more components of an enzyme blend are applied to natural fibers for producing a pulp or paper product, the system comprising:
one or more online sensors configured to generate output signals representative of measured actual values for the fiber surface substrate characterization and fiber quality characterization;
a plurality of containers each configured to store and selectively deliver respective raw materials corresponding to selected enzyme blend components; and
one or more computing devices functionally linked to the one or more online sensors and the plurality of containers, and configured to:
for each of a plurality of pulp or paper products, develop predictive machine learning models by observing correlations over time between outcomes, associated with fiber surface substrate characterization and fiber quality characterization for the respective pulp or paper product, and various combinations of process inputs, comprising characteristics of a respective enzyme blend;
for a particular pulp or paper product to be produced, use an associated model to select an initial enzyme blend to be applied, and respective dose rates for one or more components thereof, based at least in part on input data comprising an expected fiber surface substrate characterization for the pulp or paper product being produced, and an expected fiber quality characterization for the pulp or paper product;
upon application of the initial enzyme blend and respective dose rates for the one or more components thereof, provide real-time feedback data comprising measured values corresponding to an actual fiber surface substrate characterization and an actual fiber quality characterization;
dynamically select a replacement enzyme blend, and respective dose rates for one or more components thereof, based at least in part on the feedback data; and
apply the selected replacement enzyme blend in place of at least a portion of the initial enzyme blend during the industrial process.

2. The system of claim 1 , wherein the initial enzyme blend and the respective dose rates for one or more components thereof are selected further based on expected values for one or more industrial process characteristics, and the real-time feedback data further comprises measured values for the one or more industrial process characteristics.

3. The system of claim 2 , wherein the real-time feedback data further comprises measured values by the one or more online sensors corresponding to industrial process characteristics comprising one or more of a temperature value, a system flow rate, a conductivity value, an ORP value, a biocide residual value (e.g. free halogen), a pH value, and a residence time.

4. The system of claim 1 , wherein the computing device is further configured to selectively alter one or more of the models based at least in part on the provided real-time feedback data.

5. The system of claim 1 , wherein the one or more computing devices are configured to:
blend the one or more components of the initial enzyme blend in accordance with a first overall dose rate, and
apply the blended initial enzyme blend in the industrial process.

6. The system of claim 5 , wherein the one or more computing devices are further configured to:
blend the one or more components of the selected replacement enzyme blend in accordance with an overall dose rate, and
apply the blended replacement enzyme blend in place of the initial enzyme blend.

7. The system of claim 1 , wherein the fiber quality characterization is determined with respect to one or more of a fiber length, width, fibrillation, cell wall thickness, fines density/distribution, fiber kink, and fiber curl.

8. The system of claim 1 , wherein the real-time feedback data further comprises system performance data regarding one or more of a fiber strength, a porosity, a caliper, a softness, a crepe count, a freeness and a drainage of the pulp or paper product.

9. The system of claim 1 , comprising a pulp bleaching process controller configured to receive and apply the selected initial set of one or more enzymes and the dynamically selected replacement set of one or more enzymes, and respective dose rates thereof.

10. The system of claim 1 , comprising a paper manufacturing controller configured to receive and apply the selected initial set of one or more enzymes and the dynamically selected replacement set of one or more enzymes, and respective dose rates thereof.

Assignees

• Buckman Laboratories Int Inc

Inventors

• Reed Mark
• Li Feiran
• Carter John

Classifications

• D21H23/76

  characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect (D21H17/18, D21H17/70, D21H23/10 take precedence) · CPC title

• D21C5/005

  Treatment of cellulose-containing material with microorganisms or enzymes · CPC title

• D21H23/78

  Controlling or regulating not limited to any particular process or apparatus · CPC title

• D21C3/22

  Other features of pulping processes · CPC title

• D21C3/228

  Automation of the pulping processes · CPC title