Bulk Phase Polymerization System for Functionalized Olefinic Polymers
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Solution Overview
Problem
Conventional slurry polymerization processes for producing olefinic-based polymers are energy intensive and costly, and existing methods for functionalizing these polymers often require energy-intensive solvent stripping and phase changes, limiting efficiency and practicality.
Innovation Solution
An integrated system comprising a polymerization zone with a mixing, deliquifying, and quenching section, followed by a devolatilization zone and a functionalization zone, where the polymerization and functionalization of olefinic-based polymers occur in the bulk phase, utilizing a kneader reactor for reaction with a functionalizing agent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If slurry polymerization is conducted with diluent to maintain fluid conditions, then polymerization can proceed, but the resultant slurry has high viscosity which inhibits mixing and heat transfer
Solution Approach 1:
The patent removes the diluent from the polymerization system entirely, conducting the reaction in bulk phase without any solvent. This extraction of the problematic diluent component eliminates the source of high viscosity while maintaining polymerization capability through alternative heat management strategies.
Solution Approach 2:
The patent changes the physical state parameters by conducting polymerization in bulk phase rather than slurry phase. This parameter change from liquid-diluent system to pure polymer system fundamentally alters the viscosity characteristics and heat transfer mechanisms, requiring adaptation of other process parameters.
2Temperature
If diluent is used in polymerization to facilitate heat transfer, then thermal management is improved, but energy-intensive solvent stripping and drying are required afterward
Solution Approach 1:
The patent extracts and eliminates the diluent component from the process, removing the need for subsequent solvent stripping and drying operations. This directly eliminates the energy-intensive separation steps while managing heat transfer through the bulk polymer system itself.
Solution Approach 2:
The patent enables continuous bulk-phase polymerization and functionalization without interruption for solvent removal. The continuous process maintains the polymer in a consistent state throughout, eliminating the discontinuous energy-intensive separation steps required in diluent-based systems.
3Use of energy by moving object
If polymerization is conducted in bulk phase without diluent, then energy consumption is reduced, but mixing and heat transfer become more difficult
Solution Approach 1:
The patent implements continuous bulk-phase polymerization where the polymer remains in a consistent state throughout the process. This continuity eliminates the need for intermittent solvent addition and removal, maintaining operational simplicity despite the challenges of bulk-phase heat and mass transfer.
Solution Approach 2:
The patent adapts process parameters such as temperature, pressure, and reaction rate to compensate for the reduced heat transfer capability of bulk-phase systems. By optimizing these parameters, the system achieves effective heat management without requiring diluent.
4Loss of substance
If conventional solvent stripping techniques are used to remove diluent, then polymer recovery is achieved, but the process is energy intensive and costly
Solution Approach 1:
The patent extracts and eliminates the diluent from the system, removing the need for solvent stripping operations entirely. This directly addresses the energy consumption issue by eliminating the cause of the energy-intensive separation process.
Solution Approach 2:
The patent implements a continuous bulk-phase process where polymer and any functionalizing agents remain in the same phase throughout, enabling continuous processing without interruption for solvent removal and recovery operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient production and functionalization of olefinic-based polymers, reducing energy consumption and costs by maintaining the polymer in the bulk phase throughout the process, improving reactor operability, and enhancing polymer properties like cure characteristics.
Implementation Method 1
polymerizing a monomer mixture to form a polymerization mixture
Implementation Method 2
devolatilization zone... where the polymerization and functionalization of olefinic-based polymers occur in the bulk phase
Implementation Method 3
functionalizing the olefinic-based polymer... reacting the olefinic-based polymer with a functionalizing agent
Data Source
AI summary
A system for producing a functionalized olefinic-based polymer, the system comprising a polymerization zone for producing an olefinic-based polymer comprising a mixing section, a deliquifying section, and a quenching section, wherein at least one section of the polymerization zone has a defined cross-sectional area that continually decreases from a first end to a second end of said section; a devolatilization zone comprising a kneader or extruder, wherein said devolatilization zone is downstream of said polymerization zone and in fluid communication with said polymerization zone; and a functionalization zone downstream of said devolatilization zone and in fluid communication with said devolatilization zone.