Infrared Probe and Ceramic Tube for CDQ Chute Monitoring

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Solution Overview

Problem

Current technologies lack an effective on-line monitoring apparatus for temperature and gas sampling in the chute area of CDQ coke ovens, which is crucial for improving the service life of refractories due to harsh environmental conditions.

Innovation Solution

An apparatus comprising an oven internal unit with a non-contact infrared temperature probe and an oven external unit with a vacuum tank and gas sampling system, specifically designed for the chute area of CDQ coke ovens, allowing for accurate temperature measurement and gas sampling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional temperature measurement devices are used in the chute area, then temperature measurement is possible, but the device cannot withstand the harsh environment including temperature fluctuation, gas corrosion and coke erosion

Engineering Contradiction:

Improvedevice reliability in harsh environmentVSAvoidtemperature fluctuation, gas corrosion, coke erosion

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a ceramic tube as an intermediary protective structure that isolates the temperature measurement device from the harsh chute environment. The ceramic tube withstands temperature fluctuations, gas corrosion, and coke erosion, allowing the measurement device to function reliably without direct exposure to harmful factors.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs a replaceable ceramic tube that can be easily更换 when eroded or damaged. This allows the expensive measurement device to be protected while the sacrificial ceramic tube absorbs the environmental damage, enabling cost-effective maintenance in the harsh chute environment.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Measurement precision

If gas sampling is attempted in the chute area, then gas composition analysis is possible, but the sampling device is impacted by complex gas flow and temperature fluctuation

Engineering Contradiction:

Improvegas composition analysis accuracyVSAvoidgas flow and temperature fluctuation

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The ceramic tube serves as an intermediary that stabilizes the gas sampling process. It provides a controlled pathway that reduces the impact of complex gas flow patterns and temperature fluctuations, enabling more accurate gas composition measurements by filtering out environmental noise.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If non-contact infrared temperature probe is used, then temperature measurement is achieved without direct contact, but the probe requires protection from the harsh environment

Engineering Contradiction:

Improvetemperature measurement accuracyVSAvoidenvironmental damage to probe

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The ceramic tube acts as an intermediary protective barrier that allows the infrared probe to measure temperature remotely without direct exposure to harmful environmental factors. The tube transmits infrared radiation while protecting the probe from temperature fluctuations, gas corrosion, and physical damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 apparatus enables safe and reliable on-line temperature measurement and gas sampling in the chute area, providing real-time monitoring and supporting research on refractory materials and temperature control within the CDQ coke oven.

Implementation Method 1

a temperature measuring element which is a non-contact infrared temperature probe with ceramic protective sleeve

Methodology Applied

Scientific EffectInfrared radiation detection: Infrared Radiation

Implementation Method 2

the lower channel of the high-temperature ceramic tube with double-channel is the channel of sampling the gas in CDQ coke oven... the end of the lower channel of the high-temperature ceramic tube with double-channel located at outside the CDQ coke oven connects with the gas inlet of the vacuum tank

Methodology Applied

Scientific EffectPressure difference: Pressure Gradient

Data Source

PatentUS12252650B2Apparatus for on-line temperature measurement and gas sampling used in chute zone of dry quenching coke oven and using method thereof

Publication Date: 2025.03.18 MCC5 GROUP SHANGHAI CORPORATION LIMITED

AI summary

An apparatus for on-line temperature measurement and gas sampling used in the chute area of CDQ coke oven. The oven external unit includes a temperature indicator, a gas tube, a vacuum tank, and the oven internal unit includes a temperature measuring element, a temperature indicator. The temperature measuring element pass through the oven shell and oven along the oven radical, is located in the upper channel of the high-temperature ceramic tube with double-channel, one end of the high-temperature ceramic tube with double-channel is connected with the gas tube of the vacuum tank. The apparatus solves the problem that hard to measure the temperature and sample the gas of the part where the environment is the most complicated in CDQ coke oven, and has the advantages that the structure is simple, operation is easy to handle and can achieve real-time monitoring for the inner environment of the CDQ coke oven.