Solid Biomass Fuel Additives for Coking and Ash Deposition

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Solid biomass fuels experience issues with coking and ash deposition during combustion, leading to operational problems and pollutant emissions, which are exacerbated by the chemical differences and varying compositions of biomass sources.

Innovation Solution

Incorporating aluminosilicate-containing clays, aluminosilicates, or pulverised fuel ashes into solid biomass fuels, particularly those derived from non-woody sources, to improve coking properties and reduce coke deposition and secondary combustion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If solid biomass fuel is combusted to produce energy, then energy generation is achieved, but coking and ash deposition occur in the combustion chamber and conduits

Engineering Contradiction:

Improveenergy generationVSAvoidcoking and ash deposition

Core Design Contradiction:

Use of energy by moving objectVSObject-generated harmful factors

Solution Approach 1:

An anti-coking additive comprising pulverised fuel ash and/or aluminosilicate is introduced as an intermediary substance mixed with the solid biomass fuel. This additive acts as a mediator that modifies the combustion process to prevent coke formation and ash deposition on combustion chamber surfaces, thereby enabling energy generation without the harmful coking effects

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The chemical composition parameters of the fuel are changed by incorporating specific additives (pulverised fuel ash and/or aluminosilicate) in controlled amounts (0.1-10% by weight). This parameter modification alters the combustion characteristics to reduce coking tendency while maintaining energy generation efficiency

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If biomass fuel with high inorganic salt content is combusted, then energy production is achieved, but molten salts cause slagging and fouling of combustion apparatus

Engineering Contradiction:

Improveenergy productionVSAvoidslagging and fouling

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The anti-coking additive serves as an intermediary that interacts with the inorganic salts during combustion. The pulverised fuel ash and aluminosilicate components modify the behavior of molten salts, preventing them from adhering to metal surfaces and causing slagging or fouling, while allowing energy production to proceed

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The harmful inorganic salts that cause slagging are converted into a beneficial effect through the additive. The additive transforms the problematic molten salt behavior into a controlled process where the salts do not adhere to surfaces, effectively converting a harmful factor into a non-problematic combustion characteristic

Inventive Principle:

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

3Ease of manufacture

If conventional pulverising techniques are applied to wood-like biomass sources, then fuel preparation is achieved, but particles exhibit low homogeneity and poor uniformity

Engineering Contradiction:

Improvefuel preparationVSAvoidparticle homogeneity

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The invention creates a composite fuel material by combining pulverised biomass with anti-coking additives (pulverised fuel ash and/or aluminosilicate). This composite approach improves particle homogeneity and uniformity while maintaining ease of manufacture, as the additive components fill gaps and create a more consistent fuel structure

Inventive Principle:

Principle #40Composite materials

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 additives effectively minimize coke formation and emissions of harmful gaseous products by uniformly dispersing within the biomass fuels, enhancing combustion efficiency and reducing operational issues.

Implementation Method 1

The additives effectively minimize coke formation and emissions of harmful gaseous products by uniformly dispersing within the biomass fuels

Methodology Applied

Scientific EffectDispersion: Dispersion (of waves)

Implementation Method 2

Biomass derived fuels can be burned in the presence of oxygen in power plants in combustion processes to produce energy

Methodology Applied

Scientific EffectCombustion: Combustion

Data Source

PatentUS20250333661A1Solid biomass fuel Anti-coking additive

Publication Date: 2025.10.30 BAI HONG MEI

AI summary

A solid biomass fuel derived from one or more sources of biomass, wherein the one or more sources of biomass comprise: straw, palm-derived material, nut shells, hemp, bamboo, corn cob, rice husk, fruit shells, crop residues, seaweed, calliandra calothyrsus, acacia mangium, albizia chinensis, hevea brasiliensis, grass, or any combination thereof: wherein the solid biomass fuel further comprises one or more aluminosilicate-containing clays, one or more aluminosilicates, one or more pulverised fuel ashes, or a combination thereof.