Ozone-Solvent Oxidation of Combustible Materials Without Ignition

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Solution Overview

Problem

Existing oxidation treatment methods for combustible substances like carbon fibers and metal fine powders face challenges in achieving high ozone concentrations safely and efficiently, particularly in dry methods, which require dilution to prevent ignition and explosion risks, resulting in low ozone concentrations and NOx formation.

Innovation Solution

A surface oxidation treatment method using an ozone-fluorine based solvent mixed solution with an ozone concentration of 120 to 500 mg/L, formed by dissolving an oxygen-ozone mixed gas in a fluorine-based solvent and deaerating to remove undissolved gases, allowing contact with the substance in liquid or vapor phase, thereby enhancing oxidation efficiency while minimizing ignition risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high concentration ozone gas is used in dry oxidation method, then oxidation efficiency is improved, but ignition and explosion risks increase

Engineering Contradiction:

Improveoxidation efficiencyVSAvoidignition and explosion risks

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent uses fluorine-based solvent as an inert atmosphere medium to dissolve ozone, creating an environment that prevents ignition and explosion while maintaining high ozone concentration for effective oxidation treatment of combustible substances

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

Solution Approach 2:

The fluorine-based solvent acts as an intermediary between ozone and combustible substances, allowing ozone to be delivered at high concentrations while the solvent prevents direct contact between ozone and combustible materials, thus preventing ignition

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of time

If ozone concentration in solution is increased, then treatment time is reduced, but solubility limit of ozone in water restricts concentration to about 120 mg/L

Engineering Contradiction:

Improvetreatment timeVSAvoidozone concentration

Core Design Contradiction:

Loss of timeVSQuantity of substance

Solution Approach 1:

The patent changes the solvent parameter from water to fluorine-based solvent, which has different solubility characteristics for ozone, enabling much higher ozone concentrations to be achieved in the solution while maintaining stability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite system by dissolving ozone in fluorine-based solvent to form a mixed solution with enhanced properties, combining the oxidizing power of ozone with the solvent properties of fluorine-based compounds to achieve both high concentration and extended treatment capability

Inventive Principle:

Principle #40Composite materials

3Object-affected harmful factors

If air is used to form ozone instead of oxygen, then oxygen content is reduced, but NOx is formed by nitrogen contained in air

Engineering Contradiction:

Improveoxygen contentVSAvoidNOx formation

Core Design Contradiction:

Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The patent converts the potential harm of using air (NOx formation) into a benefit by selecting fluorine-based solvent that can handle high ozone concentrations without forming NOx, while still achieving the goal of reducing oxygen content concerns through controlled ozone delivery

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

The method achieves a high reaction rate and safe oxidation treatment of combustible substances by maintaining a high ozone concentration, suppressing ignition and combustion risks, and allowing for efficient oxidation of carbon fibers and metal fine powders.

Implementation Method 1

bringing an ozone-fluorine based solvent mixed solution having an ozone concentration of 120 to 500 mg/L into contact with a substance to be treated made of a combustible substance, thereby subjecting a surface of the substance to be treated to an oxidation treatment

Methodology Applied

Scientific EffectOxidation: Oxidation

Implementation Method 2

dissolving an oxygen-ozone mixed gas in a fluorine-based solvent to form a mixed solution

Methodology Applied

Scientific EffectDissolution: Solvation

Implementation Method 3

deaerating to remove undissolved gases

Methodology Applied

Scientific EffectDeaeration: Desorption

Data Source

PatentUS8900540B2Oxidation treatment method and oxidation treatment apparatus

Publication Date: 2014.12.02 NIPPON SANSO CORP

AI summary

An oxidation treatment method of the present invention includes the step of bringing a solution having an ozone concentration of 120 to 500 mg/L into contact with a substance to be treated made of a combustible substance, thereby subjecting the substance to be treated and the surface thereof to an oxidation treatment. An oxidation treatment apparatus of the present invention includes: a dissolving means that dissolves an oxygen-ozone mixed gas in a fluorine-based solvent to form mixed fluid; an undissolved gas removal means that removes an undissolved gas from the mixed fluid to form a solution; and an oxidation treatment means that brings the solution into contact with a substance to be treated made of a combustible substance, thereby subjecting the substance to be treated and the surface thereof to an oxidation treatment.