Solid Chimney Cleaning Composition with Segmented Salt Release

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Solution Overview

Problem

Current chemical chimney sweeping methods face inefficiencies due to rapid release of active ingredients from powders and high binder content in solid compositions, leading to incomplete combustion and reduced effectiveness in soot and tar deposit removal.

Innovation Solution

A solid combustible composition with a matrix of combustible particles, powders, and granules containing metal and ammonium salts, where the granules have a high concentration of chemical active ingredients for controlled vapor release, optimizing the distribution and intensity of active agents for enhanced efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If chimney sweeping powder is used, then the active ingredients are quickly released in vapor form, but the action is too rapid and does not provide good results compared to prolonged action

Engineering Contradiction:
Improverelease speed of active ingredientsVSAvoideffectiveness of soot elimination
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The chemical active ingredients are segmented into two distinct forms: powder (5-20% of composition) for rapid initial release and granules (20-40% of composition) for prolonged sustained release. This segmentation allows the composition to provide both quick action and prolonged effectiveness, resolving the contradiction between release speed and elimination effectiveness.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention changes the physical state parameters of the active ingredients by using both powder and granule forms with different size distributions. The powder form (fine particles) vaporizes quickly while the granule form (coarser particles) provides sustained release over time, allowing the system to operate effectively at different temporal scales.

Inventive Principle:
Principle #35Parameter changes

2Strength

If a large quantity of binder is used to obtain sufficient cohesion, then the composition has adequate structural integrity, but the combustion speed increases and efficiency is reduced

Engineering Contradiction:
Improvecohesion of compositionVSAvoidcombustion efficiency
Core Design Contradiction:
StrengthVSProductivity

Solution Approach 1:

The invention optimizes the binder quantity parameter to a specific range (5-15% by weight) that provides sufficient cohesion for structural integrity while maintaining optimal combustion efficiency. This precise parameter control resolves the contradiction between strength and productivity by finding the optimal balance point.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If a large quantity of chemical active ingredient is used to improve soot elimination, then the effectiveness increases, but the quantity of substance required increases

Engineering Contradiction:
Improvesoot elimination effectivenessVSAvoidamount of active ingredient
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The active ingredients are segmented into powder and granule forms that release at different rates. The powder component provides rapid initial action while the granule component ensures prolonged sustained release, maximizing the utilization efficiency of the active ingredients and reducing the total quantity needed compared to using a single form.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention creates a composite material system combining powder and granule forms of active ingredients with combustible support and binder. This composite structure allows synergistic interaction between components, improving the overall effectiveness per unit of active ingredient and reducing the total quantity required.

Inventive Principle:
Principle #40Composite materials

4Duration of action of moving object

If high pressure compression is used to delay combustion, then the release of active ingredients is slow and continuous, but satisfactory soot elimination is not achieved due to small quantity of active agents

Engineering Contradiction:
Improveduration of active ingredient releaseVSAvoidsoot elimination effectiveness
Core Design Contradiction:
Duration of action of moving objectVSReliability

Solution Approach 1:

The invention segments the active ingredients into powder and granule forms with different combustion characteristics. The powder form burns quickly providing rapid initial release, while the granule form burns slower providing prolonged sustained release. This segmentation ensures both adequate duration and sufficient total quantity of active ingredient release for effective soot elimination.

Inventive Principle:
Principle #1Segmentation

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 composition achieves a balanced, prolonged release of chemical active agents, improving the efficiency of soot and tar elimination with reduced active ingredient quantities and minimizing additional soot deposits.

Implementation Method 1

During the combustion of the solid composition, a continuous release of salt vapor of chemical active ingredients

Methodology Applied
Scientific EffectVaporization: Evaporation

Implementation Method 2

maintaining the combustion of the solid composition

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 3

the chemical agents being in the form of granules and powder, the composition comprising from 15 to 30% by weight of powder, from 5 to 30% by weight of granules and from 60 to 80% by weight of combustible particles, said granules and powder being distributed homogeneously in the solid matrix

Methodology Applied
Scientific EffectHomogeneous distribution:

Implementation Method 4

a continuous release of salt vapor of chemical active ingredients, the intensity of which can vary

Methodology Applied
Scientific EffectThermal degradation: Pyrolysis

Data Source

PatentEP2434003B1Solid composition for chemical chimney-cleaning
Publication Date: 2016.06.22 CHEMBO

AI summary

The invention relates to a solid combustible chemical chimney sweeping composition comprising chemical agents in the form of granules and powder homogeneously distributed in a solid matrix. The chemical agents comprise at least one metallic salt and at least one ammonium salt.