Quartz Extraction Probe for Sulfur Chemiluminescence Detection

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Solution Overview

Problem

Existing sulfur chemiluminescence detectors face issues with ceramic probe stability, interference from silicon monoxide, and inefficient reactive species transfer, leading to reduced sensitivity and selectivity, especially when using hydrogen carrier gas.

Innovation Solution

A quartz extraction probe with internal components like beads or wool, combined with a silicone transfer line and ozone destruction device, controls background chemiluminescence and enhances species transfer efficiency, accommodating hydrogen-rich conditions and reducing surface adsorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a ceramic probe is used in sulfur chemiluminescence detection, then the detector can operate with hydrogen carrier gas, but the probe suffers from silica poisoning and reduced stability

Engineering Contradiction:

Improvecompatibility with hydrogen carrier gasVSAvoidprobe stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces the reactive ceramic probe material with inert quartz (fused silica) material that is resistant to silica poisoning from column bleed and hydrocarbon solvents. The inert quartz probe maintains stability when used with hydrogen carrier gas while eliminating the adsorption and fouling problems that plague ceramic probes.

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

Solution Approach 2:

The patent employs a composite construction combining quartz probe material with internal components such as quartz wool or fused beads, creating a structure that maintains the inertness and chemical resistance of quartz while providing the necessary flow distribution and reaction surface characteristics for effective sulfur chemiluminescence detection.

Inventive Principle:

Principle #40Composite materials

2Reliability

If a quartz probe is used, then resistance to silica poisoning is improved, but background chemiluminescence interference increases

Engineering Contradiction:

Improveresistance to silica poisoningVSAvoidbackground chemiluminescence

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies local quality by incorporating internal components (quartz wool or fused beads) within the quartz probe structure. These internal components create localized zones that promote efficient mixing and reaction of combustion products with ozone while the overall quartz construction maintains chemical inertness and resistance to silica poisoning throughout the probe.

Inventive Principle:

Principle #3Local quality

3Productivity

If internal components are added to the quartz probe, then species transfer efficiency is enhanced, but device complexity increases

Engineering Contradiction:

Improvespecies transfer efficiencyVSAvoidprobe construction complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent utilizes porous or particulate quartz materials (quartz wool or fused beads) as internal components within the probe. These materials provide high surface area and porous structures that enhance mass transfer and mixing of combustion products with ozone, improving species transfer efficiency without requiring complex mechanical structures or moving parts.

Inventive Principle:

Principle #31Porous 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 solution improves detector sensitivity, selectivity, and stability by minimizing background interference and optimizing reactive species transfer, allowing for more efficient detection of sulfur compounds.

Implementation Method 1

ozone induced chemiluminescence detection of sulfur compounds

Methodology Applied

Scientific EffectOzone induced chemiluminescence: Chemiluminescence

Implementation Method 2

combustion furnace

Methodology Applied

Scientific EffectCombustion: Combustion

Implementation Method 3

externally heated combustion furnace

Methodology Applied

Scientific EffectThermal energy: Heating

Implementation Method 4

transfer the combustion product gas

Methodology Applied

Scientific EffectGas flow: Convection

Implementation Method 5

ozone destruction device

Methodology Applied

Scientific EffectChemical reactions: Oxidation

Data Source

PatentUS20230393075A1Combustion Extraction Probe for Sulfur Chemiluminescence Detection

Publication Date: 2023.12.07 SHEARER RANDALL LEE

AI summary

This disclosure is directed to an improved extraction probe and method of operation for sampling combustion gases from a furnace or burner for sulfur selective detection. The extraction probe is comprised of at least one constrained reduction zone with at least one discontinuous sampling conduit made from at least one smooth refractory material. The configured assembly allows for controlled formation of species that facilitate transport of sulfur monoxide or its equivalent for enhanced detection and system performance of sulfur chemiluminescence detectors.