Bisphenol F Extrusion Solidification Without Solvents or Dust
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Solution Overview
Problem
Conventional methods for processing Bisphenol F into solid forms are inefficient, time-consuming, and pose health and environmental risks due to the use of organic solvents and dust production, making them uneconomical and difficult to scale-up.
Innovation Solution
A method involving feeding Bisphenol F at 130-170°C into an extruder, processing it through zones maintained at specific temperatures (110-130°C and 100-110°C), and discharging it at 75-100°C, followed by conversion into solid forms using cooling and cutting, without the use of organic solvents or dust-producing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spray drying is used to process Bisphenol F, then solid forms can be obtained, but the extended melting point range results in longer cooling time requiring taller spray dryers and coolers, making the process uneconomical and time-consuming
Solution Approach 1:
The patent changes the temperature parameters throughout the extrusion process, using a temperature gradient from the feeding zone (130-170°C) through mixing zones (110-130°C, 100-110°C) to the discharge zone (75-100°C). This controlled parameter change allows the material to solidify progressively during extrusion, eliminating the need for extended cooling time after processing.
2Manufacturing precision
If conventional flaking and spray drying processes are used, then Bisphenol F can be processed into solid forms, but the process is very uneconomical and difficult to scale-up
Solution Approach 1:
The patent replaces the mechanical spray drying system with a thermally-controlled extrusion system. The extruder uses controlled heating and cooling zones to solidify the material during the extrusion process itself, rather than requiring a separate spray drying and cooling system. This substitution makes the process more economical and easier to scale-up.
3Manufacturing precision
If organic solvents are used for kneading slurry to manufacture pellets, then pellets can be formed, but the process is not economically preferable and poses health risks due to solvent use and recovery requirements
Solution Approach 1:
The patent extracts and eliminates the organic solvent step from the process entirely. Instead of using solvents for kneading and requiring subsequent solvent recovery, the process directly extrudes and solidifies the Bisphenol F material through controlled temperature zones, producing pellets without any harmful chemical additives.
4Manufacturing precision
If drum flaker is used to make Bisphenol granules, then granules can be produced, but excess dust is produced during manufacturing posing health risks and requiring additional screening steps
Solution Approach 1:
The patent replaces the mechanical drum flaker system with a controlled extrusion process. The extruder uses controlled temperature zones to solidify the material during extrusion, creating granules with minimal dust generation. The gentle thermal processing and controlled discharge prevent the excessive dust production associated with mechanical flaking.
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
The method is economical, environmentally friendly, and produces dust-free solid forms with high conversion efficiency (98-99.99%), reducing processing time and costs, and facilitating easy handling and packaging.
Implementation Method 1
feeding Bisphenol F at a temperature in the range of 130-170° C. into an extruder; processing the fed Bisphenol F in a first mixing zone of the extruder, the first mixing zone maintained at a temperature in the range of 110-130° C., and then in a second mixing zone of the extruder, the second mixing zone maintained at a temperature in the range of 100-110° C.; conveying the processed Bisphenol F to a discharge zone of the extruder, the discharge zone maintained at a temperature in the range of 75-100° C.
Implementation Method 2
obtain Bisphenol F in the solid form
Data Source
AI summary
A method for preparing a solid form of Bisphenol F is disclosed. The method comprises feeding Bisphenol F at a temperature in the range of 130-170° C. into an extruder; processing the fed Bisphenol F in a first mixing zone of the extruder, the first mixing zone maintained at a temperature in the range of 110-130° C., and then in a second mixing zone of the extruder, the second mixing zone maintained at a temperature in the range of 100-110° C.; conveying the processed Bisphenol F to a discharge zone of the extruder, the discharge zone maintained at a temperature in the range of 75-100° C.; discharging the processed Bisphenol F; and obtaining Bisphenol F in the solid form.