Visible Light Hydrocarbon Polymerization via LED
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Solution Overview
Problem
Conventional photo-irradiation polymerization processes using filament-based or vapor/gas-based UV light sources are inefficient, costly, and pose health hazards due to scattered radiation, and require expensive quartz reaction vessels.
Innovation Solution
A process utilizing visible light from solid-state light sources, such as LEDs, within a reaction vessel with controlled low oxygen levels and agitation, to polymerize hydrocarbons without additives, optimizing energy efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filament-based or vapor/gas-based UV light sources are used for photo-irradiation polymerization, then polymerization reaction can be induced, but the lamps emit defused or multi-directional UV light that exhibits a high rate of intensity decay with distance, leading to high electrical power consumption and short life period
Solution Approach 1:
The patent changes the fundamental parameters of the light source from conventional filament-based or vapor/gas-based UV lamps to LED technology. This parameter change enables directional light emission with minimal intensity decay, significantly improving lamp life period while reducing electrical power consumption. The LED-based system operates at lower power levels and provides stable, long-duration operation.
Solution Approach 2:
The patent replaces the thermal-mechanical light generation mechanism (filament heating or gas discharge) with solid-state electroluminescence in LEDs. This substitution eliminates the high-temperature operation and associated energy losses, providing a more energy-efficient system with extended operational life and reduced power consumption.
2Reliability
If filament-based or vapor/gas-based UV light sources are used, then polymerization can be achieved, but these lamps are bulky and have a short life period
Solution Approach 1:
The patent transitions from conventional UV lamp technology to LED technology, fundamentally changing the physical parameters of the light source. LEDs are inherently compact solid-state devices that emit directional light, eliminating the need for bulky lamp housings and reflectors while providing extended operational life.
3Reliability
If conventional UV light sources are used, then polymerization reaction can be induced, but scattered UV radiations cause short and long term health hazards
Solution Approach 1:
The patent replaces conventional UV light sources with LED-based visible light sources, substituting a harmful radiation mechanism with a safer alternative. LEDs emit directional visible light that does not produce scattered UV radiation, eliminating health hazards while maintaining effective polymerization through appropriate wavelength selection.
Solution Approach 2:
The patent converts the limitation of LED technology (emitting visible light rather than UV) into a benefit by eliminating the harmful scattered UV radiation. The directional visible light from LEDs achieves effective polymerization without the health hazards associated with conventional UV sources.
4Reliability
If conventional UV light sources are used, then polymerization can be achieved, but reaction vessels made of quartz make the chemical process and its apparatus expensive
Solution Approach 1:
The patent replaces the UV light generation system with an LED-based visible light system, which eliminates the requirement for expensive quartz reaction vessels. Standard transparent materials suffice for LED illumination, dramatically reducing apparatus cost while maintaining polymerization effectiveness.
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 process achieves cost-effective, environmentally safe, and energy-efficient polymerization of hydrocarbons with improved reaction control and reduced health risks, using LEDs to emit specific wavelengths of visible light for polymerization.
Implementation Method 1
reacting, under agitation, the hydrocarbon and a photo-initiator in an atmosphere containing oxygen less than 0.65% in a reaction vessel by passing visible light of wavelength ranging from 390 to 780 nm emitted by at least one light source, into the reaction vessel
Data Source
AI summary
The present disclosure relates to a process for polymerization of hydrocarbons. In accordance with the process of the present disclosure, a hydrocarbon and a photo-initiator is introduced in a reaction vessel and then agitated for a predetermined time period. In the next step, the reaction vessel containing the agitating hydrocarbon and the photo-initiator is irradiated with visible light to obtain a polymerized hydrocarbon. The process of present disclosure is carried out in an atmosphere containing oxygen less than 0.65% in the reaction vessel.