Aromatic Production from Fatty Acid Oils via Noncatalytic Cracking

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Solution Overview

Problem

Current methods for producing aromatics from renewable sources are inefficient and water-intensive, and existing technologies for converting fatty acid oils to aromatics result in unwanted by-products like coke and tar, which reduce catalyst effectiveness and increase carbon emissions.

Innovation Solution

A two-step process involving noncatalytic cracking of fatty acid oils to produce a high concentration of alkenes, followed by catalytic reforming of these alkenes into aromatics, which allows for the production of high-octane aviation fuel and other aromatic compounds with reduced by-product formation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If fermentation through alcohol pathways is used to produce aromatics from renewable sources, then aromatic compounds can be produced, but water consumption is high and energy efficiency is low

Engineering Contradiction:

Improvearomatic compounds productionVSAvoidenergy efficiency

Core Design Contradiction:

Quantity of substanceVSUse of energy by moving object

Solution Approach 1:

The patent changes the fundamental parameters of the conversion process by using direct hydrocarbon conversion pathways instead of fermentation-based alcohol pathways. This involves changing the chemical reaction conditions, catalysts, and process parameters to achieve direct conversion of renewable feedstocks to aromatic hydrocarbons, thereby improving energy efficiency while maintaining aromatic production

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the biological fermentation system with a chemical catalytic conversion system. This substitution eliminates the need for microbial fermentation and associated water-intensive processes, directly converting renewable feedstocks through catalytic reactions to produce aromatic compounds with improved energy efficiency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Quantity of substance

If catalytic reforming is used to convert fatty acid oils to aromatics, then aromatic compounds are produced, but coke and tar by-products form which reduce catalyst effectiveness

Engineering Contradiction:

Improvearomatic compoundsVSAvoidcatalyst effectiveness

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent converts the harmful coke and tar by-products into beneficial aromatic compounds by optimizing the catalytic reforming conditions. The process conditions are adjusted to favor aromatization reactions over coking reactions, transforming what would be harmful deposits into desired aromatic products, thereby maintaining catalyst effectiveness

Inventive Principle:

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

Solution Approach 2:

The patent changes the reaction parameters including temperature, pressure, catalyst composition, and residence time to optimize the reforming process. These parameter changes suppress coke and tar formation while enhancing aromatic production, maintaining catalyst effectiveness throughout the process

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If catalytic reforming is used to produce aromatics from fatty acid oils, then aromatic compounds are produced, but carbon emissions increase

Engineering Contradiction:

Improvearomatic compoundsVSAvoidcarbon emissions

Core Design Contradiction:

Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The patent converts carbon that would be emitted as CO2 into valuable aromatic hydrocarbons by optimizing the reforming process. The catalytic system and reaction conditions are designed to maximize carbon incorporation into aromatic products rather than releasing it as emissions, thereby reducing the carbon footprint while maintaining aromatic production

Inventive Principle:

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

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 process effectively generates aromatic compounds with high concentrations suitable for commercial use, reducing the need for petroleum-based fuels and minimizing environmental impact by eliminating coke and tar formation.

Implementation Method 1

noncatalytically crack fatty acid based oils

Methodology Applied

Scientific EffectThermal cracking: Pyrolysis

Implementation Method 2

catalytic reforming of these alpha alkenes

Methodology Applied

Scientific EffectCatalysis: Catalysis

Data Source

PatentUS9273252B2Production of aromatics from noncatalytically cracked fatty acid based oils

Publication Date: 2016.03.01 UNIVERSITY OF NORTH DAKOTA

AI summary

A method for producing aromatic compounds from fatty acid oils including heating a fatty acid oil to a temperature between about 100° C. to about 800° C. at a pressure between about vacuum conditions and about 200 psia for a time sufficient to crack the oil and produce a cracked fatty acid oil; removing undesired materials, unreacted oil, heavy ends, and light ends from the cracked fatty acid oil; heating the resulting purified cracked fatty acid oil to a temperature between about 100° C. to about 800° C. at a pressure between about vacuum conditions and about 200 psia for a time sufficient to reform alkenes and alkanes in the cracked fatty acid oil into aromatic compounds and produce a reformed fatty acid oil; and extracting components from the reformed fatty acid oil to produce a mixture of chemical products containing between 5% and 90% aromatic compounds by weight.