Water-absorbent resin collector for powder aggregate removal
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Solution Overview
Problem
The production efficiency of water-absorbent resin is hindered by powder aggregates that adhere to the inner surfaces of reactors and dryers, causing instability in the drive load of discharge members and reducing classification efficiency in existing water-absorbent resin production processes.
Innovation Solution
A water-absorbent resin production apparatus is designed with a collector comprising rod-shaped members tilted in the powder flow path, which collects aggregates larger than a predetermined size, preventing them from entering the powder flow rate regulating discharge member and maintaining a stable flow path, thereby ensuring high production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a powder flow rate regulating discharge member is disposed between the dryer and the classifier to regulate the powder flow rate, then the classification efficiency is improved, but the drive load becomes unstable and the discharge member may stop due to powder aggregates getting involved in the driving portion
Solution Approach 1:
The invention divides the system into two separate functional sections: a powder flow rate regulating discharge member for controlling powder flow to the classifier, and a powder aggregate removing discharge member for removing aggregates. This segmentation allows each component to perform its specific function without interference, preventing aggregates from affecting the drive load of the flow rate regulating mechanism while maintaining classification efficiency.
Solution Approach 2:
The invention introduces a powder aggregate removing discharge member as an intermediary component between the dryer and the classifier. This intermediary removes powder aggregates before they can enter the powder flow rate regulating discharge member, thereby protecting the regulating mechanism from unstable drive loads caused by aggregate interference while still allowing regulated powder flow to reach the classifier.
2Productivity
If the water-absorbent resin is produced as a particulate powder by polymerizing a water-soluble ethylenically unsaturated monomer, then the production efficiency is improved, but powder aggregates form due to adhesion on the inner wall surfaces of the polymerization reactor or dryer
Solution Approach 1:
The invention applies preliminary action by removing powder aggregates at the discharge point before the powder enters the classification and collection system. The powder aggregate removing discharge member is positioned to intercept and remove aggregates formed during polymerization and drying, preventing them from affecting downstream processes and maintaining high production efficiency.
Solution Approach 2:
The invention extracts the harmful powder aggregates from the powder stream by providing a separate discharge path through the powder aggregate removing discharge member. This allows aggregates to be removed and disposed of separately from the useful fine powder, maintaining production efficiency by preventing aggregate-related stoppages while preserving the quality of the usable powder product.
Data Source
Figure 1
Figure 2~3
Figure 4A(1)~4A(2)
AI summary
In a water-absorbent resin production apparatus for producing a water-absorbent resin by polymerizing a water-soluble ethlenically unsaturated monomer, a water-absorbent resin powder (R3) obtained by drying a water-absorbent resin composition with a dryer (3) passes through a first powder flow path pipe (12), is discharged therefrom toward a classifier (6) while a flow rate is regulated so as to a predetermined value by a powder flow rate regulating discharge member (4) composed of a hopper (4a) and a rotary valve (4b), and is classified by the classifier (6). In the water-absorbent resin production apparatus (1), a collector (5) for collecting a powder aggregate (R4) composed of aggregated particles of the water-absorbent resin powder (R3) is disposed in the first powder flow path pipe (12). Accordingly, a water-absorbent resin in the form of a particulate powder from which the powder aggregate is removed can be produced at a high production efficiency.