Ceramic Fiber Combustion Bed for Halogen Analysis

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Solution Overview

Problem

Current analytical combustion systems face challenges in achieving complete combustion of samples containing halogens without black soot formation, leading to incomplete recovery of halogen elements, especially fluorine, and are limited in their ability to analyze a wide range of fluorine concentrations in liquid samples.

Innovation Solution

The oxy-pyrohydrolysis system incorporates a pyrotube with a combustion-enhancing bed of ceramic fibers or fabrics, which directs combustion ingredients and enhances combustion, allowing for the complete burning of samples without black soot formation and enabling continuous total halogen analysis, including fluorine analysis in samples with concentrations from 10 ppb to 10,000 ppm.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional combustion systems are used to analyze halogen content, then the system structure is simple, but complete combustion cannot be achieved leading to black soot formation and incomplete halogen recovery

Engineering Contradiction:
Improvehalogen recovery completenessVSAvoidcombustion system structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A combustion-enhancing bed composed of ceramic fibers or fabrics is introduced as an intermediary substance between the sample and the combustion environment. This bed facilitates complete combustion by providing a large surface area for oxidation reactions, enabling near 100% recovery of halogens including fluorine without forming black soot, while maintaining a relatively simple overall system structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If conventional combustion systems are used, then the device complexity is low, but the system cannot handle a wide range of fluorine concentrations from 10 ppb to 10,000 ppm

Engineering Contradiction:
Improveconcentration range analysis capabilityVSAvoidcombustion system structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The combustion-enhancing bed is designed to universally handle samples with fluorine concentrations spanning from 10 ppb to 10,000 ppm. The bed's high surface area and catalytic properties enable efficient combustion across this wide concentration range, allowing a single system configuration to analyze diverse samples without requiring complex adjustment mechanisms or multiple specialized components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If conventional combustion methods are used, then continuous analysis capability is limited, but complete combustion without soot formation cannot be achieved

Engineering Contradiction:
Improvecontinuous analysis capabilityVSAvoidblack soot formation
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The combustion-enhancing bed creates an oxygen-rich environment that accelerates the oxidation of carbon-containing compounds during combustion. This strong oxidizing condition prevents the formation of incomplete combustion products like black soot, while the bed's structure allows continuous processing of samples, enabling both complete combustion and continuous analysis capability.

Inventive Principle:
Principle #38Strong oxidants (Accelerated oxidation)

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 enables near 100% recovery of halogens, particularly fluorine, and allows for continuous total halogen analysis in liquid samples, such as drinking water, across a wide concentration range, improving the accuracy and efficiency of halogen content determination.

Implementation Method 1

combusting the sample inside the pyrotube to produce combustion products

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 2

complete burning of samples without black soot formation

Methodology Applied
Scientific EffectThermal oxidation: Oxidation

Implementation Method 3

a condenser positioned downstream of the second end of the pyrotube, and configured to condense combustion products received from the pyrotube

Methodology Applied
Scientific EffectCondensation: Condensation

Data Source

PatentUS11360064B2Oxy-pyrohydrolysis system and method for total halogen analysis
Publication Date: 2022.06.14 3M INNOVATIVE PROPERTIES CO
  • US11360064B2 patent drawing
  • US11360064B2 patent drawing
  • US11360064B2 patent drawing

AI summary

Oxy-pyrohydrolysis articles, systems and methods for total halogen, in particular fluorine analysis are provided. A sample containing halogen elements is provided into a pyrotube for combustion. A combustion-enhancing bed including ceramic fibers or fabrics is disposed inside the pyrotube to enhance the combustion and protect the pyrotube from damage by corrosive gases.