Synthetic Fuel Production from Polymeric Waste via Anaerobic Catalysis

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Solution Overview

Problem

Current methods for producing synthetic fuels face challenges in cost, environmental impact, and carbon neutrality, particularly when using edible plants or conventional petroleum-based processes, which can be energy-intensive and lead to increased food prices or environmental pollution.

Innovation Solution

A method involving the use of carbon-containing polymeric feedstocks such as scrap rubber, plastic, and organic matter, which are re-formed into synthetic fuels through a process involving size reduction, liquefaction, and polymerization using a catalyst mixture of elemental iron and Fe2O3 under controlled temperature and pressure conditions, resulting in fuels chemically identical to conventional vehicle fuels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional petroleum-based processes are used to produce synthetic fuels, then fuel production efficiency is improved, but environmental pollution and carbon emissions increase

Engineering Contradiction:

Improvefuel production efficiencyVSAvoidcarbon emissions and environmental pollution

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the fundamental parameters of the fuel production process by using anaerobic conditions instead of aerobic combustion, and by operating at lower temperatures and pressures compared to conventional petroleum refining. This transforms the chemical pathways to avoid CO2 generation while maintaining fuel production capability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs an inert anaerobic environment (oxygen-free atmosphere) during the fuel synthesis process, replacing the oxidative conditions of conventional processes. This prevents combustion reactions that generate CO2 and other harmful emissions, while still enabling hydrocarbon formation through alternative chemical pathways

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

2Adaptability or versatility

If edible plants are used for synthetic fuel production, then alternative fuel sources are provided, but food prices increase

Engineering Contradiction:

Improvealternative fuel sourcesVSAvoidincreased food prices

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent converts waste materials (scrap rubber, plastic, agricultural residues) that would otherwise be environmental hazards into valuable fuel products. This transforms harmful waste into beneficial energy sources, eliminating the need to compete with food crops for land and resources

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent recovers energy value from discarded waste materials (scrap rubber, plastic, agricultural residues) that would normally be thrown away or improperly disposed of. This recovery process creates fuel from waste, eliminating the need to use edible plants and thus avoiding food price increases

Inventive Principle:

Principle #34Discarding and recovering

3Productivity

If high energy costs are incurred during planting and processing, then synthetic fuel production is achieved, but economic viability decreases

Engineering Contradiction:

Improvesynthetic fuel productionVSAvoidenergy costs during planting and processing

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent employs a self-service approach where the waste feedstock materials (scrap rubber, plastic, agricultural residues) provide their own structural carbon framework for fuel synthesis. The process requires minimal external energy input beyond what is needed for basic heating and catalyst operation, as the feedstock itself contains the necessary carbon and energy density

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent uses inexpensive, readily available waste materials as feedstock instead of requiring expensive, energy-intensive cultivation of dedicated energy crops. These waste materials are essentially free or low-cost inputs that eliminate the need for planting, harvesting, and processing energy expenditures

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 produces high-quality synthetic fuels with reduced water usage and negligible carbon dioxide emissions, making it environmentally friendly and economically viable, while utilizing waste materials that would otherwise be unsuitable as fuels.

Implementation Method 1

a catalytic amount of a catalyst mixture comprising: elemental iron; and Fe2O3

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 2

heating said slurry to a temperature of about 20° C. to about 550° C. under a pressure of about 5 kPa to about 10,500 kPa for a time sufficient to produce a gaseous phase and a liquid phase

Methodology Applied

Scientific EffectThermal decomposition: Pyrolysis