Polymer Reactor Wall Cleaning Mechanism
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Solution Overview
Problem
In the synthesis of polymers like polyamides, the removal of gaseous substances such as steam from the reaction melt leads to deposits on reactor walls, affecting product quality and process efficiency.
Innovation Solution
An apparatus with a circular cylindrical reaction space and movable removal devices that prevent deposit formation by continuously wetting the inner walls and removing deposits above and below the inlet orifice, ensuring efficient polymerization and separation of gaseous substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If gaseous substances are removed from the polymer melt, then product quality is improved, but deposits form on reactor walls
Solution Approach 1:
The patent converts the harmful deposits into beneficial wetting films by introducing a liquid phase (water or process fluid) that flows over the reactor walls. The liquid serves dual purposes: it prevents harmful deposit accumulation while the evaporation of this liquid provides additional moisture control beneficial for polymer quality
Solution Approach 2:
The patent introduces a liquid intermediary substance that mediates between the polymer melt and reactor walls. This liquid layer acts as a protective barrier preventing direct contact between the polymer and wall surfaces, thereby eliminating deposits while controlling the polymerization environment
2Productivity
If reactor walls are kept clean, then process efficiency is improved, but additional removal devices increase device complexity
Solution Approach 1:
The removal devices are designed with multi-functionality, serving both as deposit removal mechanisms and as liquid distribution systems. The same structural elements that remove deposits also distribute the wetting liquid along the reactor walls, reducing the need for separate systems
Solution Approach 2:
The removal devices are designed to be self-cleaning and self-maintaining through the continuous flow of liquid. The system uses its own process fluid to maintain cleanliness, reducing the need for external intervention and complex maintenance systems
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 solution prevents deposit formation, ensuring continuous operation and improved product quality by maintaining reactor cleanliness and enhancing the efficiency of polymer synthesis processes.
Implementation Method 1
a liquid phase is introduced into the reaction space in order to flow along an inner wall of the reaction space
Implementation Method 2
separation of a gaseous substance, especially of steam
Data Source
AI summary
The invention relates to a device for synthesizing a polymer accompanied by separating a gaseous substance. Said device comprises: a reactor chamber (1) having a substantially circular cylinder-shaped upper section (11), which is delimited by two circular surfaces (111, 112) and a circumferential surface (113) and has a longitudinal cylinder axis, and a lower section (12), the upper section (11) and the lower section (12) being connected to one another via the first circular surface (111); an inlet opening (2); a first outlet opening (3), which is arranged in a wall of the lower section (12); a second outlet opening (4), which is arranged in the second circular surface (112) or in the circumferential surface (113) between the inlet opening (2) and the second circular surface (112); and a removal device (51), which is arranged so as to be movable along the longitudinal cylinder axis at least between the second circular surface (112) and the inlet opening (2), and contacts the circumferential surface (113). The invention further relates to a method comprising: feeding an oligomer melt (7) into a circular cylinder-shaped first section (11) of a reaction chamber (1) through an inlet opening (2) tangentially to a circumferential surface (113) of the first section (11); polymerizing the oligomer melt (7) to form a polymer melt (8); removing the polymer melt (8) from the reaction chamber (1) through a first outlet opening (3) of the reaction chamber (1); and removing a gaseous substance (9) from the reaction chamber (1) through a second outlet opening (4) of the reaction chamber (1) above the inlet opening (2). Deposits on at least one inner wall of the first section (11) of the reaction chamber (1) above the inlet opening (2) are removed by a removal device (51).