Combustion Characteristic Determination for Gasification Slag and Coal Mixtures

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Solution Overview

Problem

Current methods for determining combustion characteristics of gasification slag and coal mixtures are inefficient and labor-intensive, requiring numerous tests and relying heavily on thermogravimetric analysis, which is resource-intensive and time-consuming.

Innovation Solution

A method and system that utilize a processor to determine combustion characteristics, such as ignition temperature and burnout temperature, by obtaining basic data on sample coal and gasification slag, and applying mixing ratios to calculate the combustion characteristics of a mixture using pre-stored data and correction coefficients.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If thermogravimetric analysis is used to determine combustion characteristics, then measurement precision is improved, but productivity deteriorates due to high time consumption and manual operation requirements

Engineering Contradiction:
Improvecombustion characteristic determination accuracyVSAvoidtesting efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent creates a computational model that copies and simulates the thermogravimetric analysis process through mathematical calculations. Instead of performing actual physical experiments, the system uses stored basic data and correction coefficients to compute combustion characteristics, thereby eliminating repetitive manual testing while maintaining determination accuracy.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent performs preliminary actions by pre-measuring and storing basic combustion data for various coals and gasification slags. These preliminary measurements are saved as reference data, allowing subsequent combustion characteristic determinations to be made through calculation rather than repeated experimentation, thus improving productivity without sacrificing precision.

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If multiple tests are conducted for different mixed fuel ratios, then measurement precision is improved, but loss of time increases due to repetitive testing

Engineering Contradiction:
Improvecombustion characteristic accuracyVSAvoidtesting duration
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system uses computational models to copy the results of multiple tests rather than actually performing them. By inputting different mixing ratios into the established calculation model, the system can rapidly determine combustion characteristics for various blend compositions without conducting physical experiments, thereby eliminating time loss while maintaining precision through the validated calculation methodology.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent changes the approach from varying physical test conditions to changing calculation parameters. By modifying input parameters such as mixing ratios, volatile matter content, and fixed carbon content in the computational model, the system can efficiently evaluate multiple scenarios without the time penalty of repeated physical testing, thus resolving the contradiction between precision and time consumption.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If extensive experimental testing is performed, then reliability of combustion characteristic data is improved, but device complexity increases due to requirements for specialized equipment and expertise

Engineering Contradiction:
Improvedata accuracyVSAvoidtesting equipment complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical and complex thermogravimetric analysis equipment with a computational system. Instead of using specialized thermal analysis instruments that require expert operation, the system uses standard processors to execute calculation models based on input parameters, thereby reducing device complexity while maintaining data reliability through mathematically rigorous methods.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service determination of combustion characteristics by using automatically stored basic data and correction coefficients. The computational model自行 (self) calculates combustion characteristics without requiring expert intervention or complex equipment operation, thus reducing device complexity and operational barriers while maintaining reliable results through consistent algorithmic processing.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS20240192157A1Methods and systems for determining combustion characteristics of mixtures of gasification SLAG and coal
Publication Date: 2024.06.13 CHINA UNIV OF MINING & TECH
  • US20240192157A1 patent drawing
  • US20240192157A1 patent drawing
  • US20240192157A1 patent drawing

AI summary

The present disclosure provides methods for determining a combustion characteristic of a mixture of gasification slag and coal. The method may be implemented by a processor. The combustion characteristic includes at least one of an ignition temperature, a burnout temperature, or a composite combustion characteristic index. The method comprises: obtaining first basic data of sample coal and sample gasification slag, the first basic data including at least one of a moisture content, a volatile matter, or a fixed carbon; obtaining second basic data of coal to be tested and gasification slag to be tested in a mixture to be tested and a mixing ratio of the mixture to be tested; and determining a combustion characteristic of the mixture to be tested based on the first basic data, the second basic data, and the mixing ratio.