Continuous Polyarylene Sulfide Production via Gravitational Flow
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Solution Overview
Problem
Existing continuous poly(arylene sulfide) production devices require multiple pressure-resistant polymerization vessels, piping, and significant energy for operation, making resource and energy savings, as well as cost reductions, difficult to achieve.
Innovation Solution
A device with a housing chamber containing sequentially connected reaction cells, supplied with an organic amide solvent, sulfur source, and dihalo aromatic compound, where a polymerization reaction forms a reaction mixture that moves through the gas phase between cells, utilizing gravitational flow and minimizing the need for additional energy and equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple pressure-resistant polymerization vessels and transfer equipment are used for continuous PAS production, then continuous polymerization can be achieved, but energy consumption increases and resource savings become difficult
Solution Approach 1:
The patent combines multiple polymerization vessels into a single integrated reaction chamber with multiple reaction zones. The housing chamber contains several reaction cells that are sequentially connected, eliminating the need for separate pressure-resistant vessels and external transfer equipment. This merging reduces energy consumption while maintaining continuous polymerization capability.
Solution Approach 2:
The reaction mixture automatically flows from one reaction cell to the next through gravitational force and pressure differential created by the gas phase. This self-service mechanism eliminates the need for external transfer equipment and reduces energy consumption for material transport.
2Productivity
If multiple pressure-resistant polymerization vessels and piping are used for continuous PAS production, then continuous polymerization can be achieved, but equipment costs increase
Solution Approach 1:
The patent integrates multiple polymerization functions into a single housing chamber that contains multiple reaction cells. This eliminates the need for multiple separate pressure-resistant vessels, complex piping systems, and external transfer equipment, thereby reducing equipment costs while maintaining continuous production capability.
Solution Approach 2:
The housing chamber serves multiple functions simultaneously: it houses multiple reaction cells, provides the containment vessel, and facilitates the transfer of reaction mixture between cells. This multi-functionality reduces the number of separate components needed, simplifying the overall device and reducing costs.
3Productivity
If conventional continuous polymerization equipment is used, then production can be maintained, but resource savings become difficult to achieve
Solution Approach 1:
The reaction mixture flows automatically through the sequential reaction cells using gravitational force and internal pressure differential. This self-service flow mechanism eliminates the need for energy-intensive pumping and transfer systems, reducing resource consumption while maintaining continuous production.
Solution Approach 2:
By combining multiple reaction zones within a single housing chamber, the patent reduces the total amount of equipment, piping, and auxiliary systems needed. This consolidation reduces material resources required for construction and operation while maintaining continuous production capability.
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 configuration enables resource and energy savings, reduces equipment costs, and promotes efficient polymerization by eliminating the need for separate transfer mechanisms and reducing water inhibition, allowing for high-temperature polymerization.
Implementation Method 1
the reaction cells being mutually communicated through a gas phase within the housing chamber, and the reaction mixture being sequentially moved to each of the reaction cells
Implementation Method 2
the reaction solution is transferred between the polymerization vessels by a pressure difference
Implementation Method 3
removing from the housing chamber at least a portion of the water inside the housing chamber through a gas phase in the housing chamber
Implementation Method 4
removing from the housing chamber at least a portion of the water inside the housing chamber through a gas phase in the housing chamber
Data Source
AI summary
Provided are a device for continuously producing poly(arylene sulfide) (hereinafter, referred to as PAS) and a method for continuous PAS production with which resource savings, energy savings, and a reduction in equipment cost are rendered possible. The device for continuous PAS production according to the present invention includes a housing chamber for housing a plurality of reaction cells; wherein the housing chamber is supplied with at least an organic amide solvent, a sulfur source, and a dihalo aromatic compound. In the reaction cells, the sulfur source is polymerized with the dihalo aromatic compound in the organic amide solvent to form a reaction mixture. The reaction cells communicate with each other through a gas phase within the housing chamber. The reaction cells are sequentially connected, and the reaction mixture sequentially moves to each reaction cell.