Lignin Composition for Fuel Production via Low-Pressure Oxidation

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Solution Overview

Problem

The biofuel industry faces challenges in efficiently processing lignin due to high-pressure requirements and the use of expensive and hazardous hydrogen gas, while pulp and paper mills generate significant lignin waste that is often burned, necessitating a less complex method for lignin processing in biorefineries and the production of fine chemicals or paint additives.

Innovation Solution

A composition comprising lignin or lignin derivatives with a weight average molecular weight of not more than 5,000 g/mol, combined with a solvent such as an alcohol, ether, sulfoxide, ketone, or aldehyde, and a carrier liquid, which facilitates the processing of lignin in a refinery environment, enabling its use in fuel production and various industrial applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high pressure and hydrogen gas are used for processing biomass, then fuel production efficiency is improved, but process complexity and safety risks increase

Engineering Contradiction:

Improvefuel production efficiencyVSAvoidprocess complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent changes the chemical parameters of the processing system by using oxygen instead of hydrogen gas and operating at lower pressures. This substitution fundamentally alters the reaction conditions, eliminating the need for high-pressure equipment and hydrogen storage systems while maintaining effective biomass conversion for fuel production.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs oxygen, which is abundant, inexpensive, and can be supplied continuously from the air or oxygen generators, replacing expensive hydrogen gas that requires complex storage and handling infrastructure. This approach eliminates the need for costly hydrogen storage tanks and high-pressure delivery systems.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Productivity

If hydrogen gas is used for lignin processing, then fuel production is improved, but safety risks and costs increase

Engineering Contradiction:

Improvelignin processing efficiencyVSAvoidsafety risks

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces hydrogen gas with oxygen, which is naturally abundant in the air and can be supplied continuously without expensive storage infrastructure. Oxygen is non-flammable and eliminates the explosion hazards associated with hydrogen, while still enabling effective oxidation reactions for lignin conversion.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent transforms the typically problematic oxidation process into a beneficial reaction by using controlled oxygen oxidation to convert lignin into valuable fuel components. This approach converts what could be a harmful uncontrolled oxidation into a controlled, beneficial process that eliminates safety risks while maintaining productivity.

Inventive Principle:

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

3Use of energy by moving object

If lignin is burned in pulp mills, then energy for production is provided, but waste of valuable material occurs

Engineering Contradiction:

Improveenergy productionVSAvoidlignin waste

Core Design Contradiction:

Use of energy by moving objectVSLoss of substance

Solution Approach 1:

The patent changes the processing parameters from simple combustion (burning) to controlled oxidation at lower temperatures and pressures. This transformation converts lignin from a waste material to be disposed of into a valuable resource that can be selectively converted into fuel components and chemical intermediates, eliminating material waste while providing energy.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent recovers valuable energy and chemical components from lignin that would otherwise be discarded in pulp mill combustion. By using controlled oxidation instead of complete combustion, the process recovers useful fuel products and chemical intermediates from lignin, transforming it from waste into a resource.

Inventive Principle:

Principle #34Discarding and recovering

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 approach allows for the easier and more efficient production of fuels and other industrial products from biomass, reducing the complexity and costs associated with lignin processing, and utilizing lignin waste more effectively.

Implementation Method 1

A composition comprising biomass material and solvent where the composition may be used in refinery processes for fuel production

Methodology Applied

Scientific EffectDissolution: Solvation

Data Source

PatentUS9920201B2Compositions of biomass materials for refining

Publication Date: 2018.03.20 REN FUEL K2B AB

AI summary

The present invention relates to a composition and a method for preparing said composition where the composition comprises a lignin, a solvent, a carrier liquid, and a fatty acid, wherein the lignin constitutes at least 4 weight % of the composition and has a weight average molecular weight of not more than 5,000 g/mol, wherein the solvent is an alcohol, ether, organic ester, sulfoxide, ketone, aldehyde or a combination thereof, and wherein the carrier liquid is a hydrocarbon oil.