Citrate-Based Fire Retardant Coatings for Wildfire Prevention
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Solution Overview
Problem
Conventional methods for wildfire defense, such as making firebreaks and airdropping PhosChek fire retardant, are inadequate and pose risks to human safety and the environment, as they are often reactive, costly, and ineffective in preventing the spread of wildfires in urban areas, especially in the Wildfire Urban Interface (WUI) regions.
Innovation Solution
Development of a system and method using environmentally-clean, biodegradable aqueous-based fire inhibiting biochemical compositions comprising tripotassium citrate and triethyl citrate, which can be atomized and sprayed as a fine mist to form a durable, gas-pervious coating on surfaces, effectively inhibiting wildfires by interrupting free radical chain reactions and reducing smoke production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fire retardant chemicals (PhosChek) are airdropped to fight wildfires, then fire suppression capability is improved, but environmental pollution and health hazards worsen
Solution Approach 1:
The patent changes the chemical composition parameters by replacing phosphorous-based chemicals with potassium-based citrate compounds. This parameter change maintains fire suppression effectiveness while eliminating the harmful environmental and health effects associated with conventional PhosChek chemicals, as the potassium citrate decomposes into harmless potassium carbonate and carbon dioxide.
Solution Approach 2:
The invention uses biodegradable, environmentally benign chemical compositions that can be safely disposed of or naturally decomposed after use. The potassium citrate-based formula leaves no persistent harmful residues, allowing the system to be used repeatedly without accumulating environmental harm, unlike conventional phosphorous chemicals.
2Speed
If reactive fire fighting methods are used to suppress wildfires, then immediate fire suppression is achieved, but long-term prevention and sustainability worsen
Solution Approach 1:
The patent applies fire retardant treatments in advance to vegetation and surfaces before wildfires occur. The potassium citrate-based composition forms a protective coating that prevents ignition and slows combustion, enabling proactive fire prevention rather than reactive suppression. This preliminary action creates lasting protection that reduces the need for repeated emergency interventions.
3Reliability
If traditional fire break methods (bulldozing, backfires) are used to create fire barriers, then fire spread is blocked, but safety risks and operational complexity worsen
Solution Approach 1:
The invention replaces mechanical fire break methods (bulldozing, backfires) with a chemical solution approach. Instead of physically removing or igniting vegetation to create barriers, the potassium citrate-based spray forms a protective chemical coating on surfaces, creating fire-resistant barriers without requiring dangerous mechanical or thermal operations that put personnel at risk.
4Quantity of substance
If water-based fire retardant airdrops are used, then large quantities of fire suppressant can be delivered, but smoke and noxious gases are generated
Solution Approach 1:
The patent changes the chemical composition from phosphorous-based to potassium-based citrate. This parameter change fundamentally alters the decomposition products: instead of generating noxious phosphorous compounds and smoke, the potassium citrate breaks down into harmless potassium carbonate and carbon dioxide, eliminating harmful emissions while maintaining the ability to deliver large quantities of fire suppressant via aerial application.
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 solution provides proactive and long-lasting fire protection, reducing the risk of damage and destruction from wildfires, while ensuring firefighter and public safety by creating a durable, smoke-reducing barrier that lasts for weeks or months, even in hot dry climates, without the environmental hazards associated with traditional chemicals.
Implementation Method 1
effectively inhibiting wildfires by interrupting free radical chain reactions
Implementation Method 2
which can be atomized and sprayed as a fine mist to form a durable, gas-pervious coating on surfaces
Implementation Method 3
while water molecules in the water evaporate during drying, and the metal ions cooperate to form metal salt crystal structure on the surface
Data Source
AI summary
Environmentally-clean biodegradable water-based biochemical concentrates for producing fire-inhibiting and fire-extinguishing liquids and foams for fighting Class A and/or B fires. The concentrates are formulated using generally safe food-grade chemicals, for foaming agents, surfactants and dispersants, and fire inhibiting extinguishing agents, without the use of phosphates and ammonia compounds. Automated proportioning and mixing devices and systems can be used to mix the biochemical concentrates with proportioned quantities of pressurized water so as to produce fire inhibiting and extinguishing water streams, as well as finished firefighting foam materials, to both inhibit and extinguish fire involving Class A and/or B fuels.