GB/T 12574-2023 in English
VALIDDetermination of acid number in aviation turbine fuel
- Issued on:2023-09-07
- Implemented on:2024-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$233.00
《GB/T 12574-2023喷气燃料总酸值测定法》由TC280（全国石油产品和润滑剂标准化技术委员会）归口，TC280SC1（全国石油产品和润滑剂标准化技术委员会石油燃料和润滑剂分会）执行，主管部门为国家标准委。
Introduction
Introduction
The total acid number of jet fuel is a key indicator of its quality, which directly affects the corrosiveness of the material and the fuel performance. This standard provides detailed methods and requirements to ensure the accuracy and reliability of the test results.
Standard Background and Technological Evolution
| Comparison Dimensions | GB/T 12574—1990 | GB/T 12574—2023 |
|---|---|---|
| Scope of Application | Total Acid Value Range Not Clearly Defined | Clearly $0.000\mathrm{mg/g} \sim 0.100\mathrm{mg/g}$ (in terms of KOH) |
| Method Update | Mainly Manual Titration Method | Newly Added Automatic Instrument Method, with Significantly Improved Precision |
| Safety Requirements | Basic requirements | Detailed protective measures, emphasizing the standards for handling hazardous materials |
Instruments and operating procedures
Description of main instruments
For example, the automatic total acid value tester for jet fuel, combined with machine vision technology, can achieve accurate titration endpoint determination. Its key components include:
- Digital camera: for real-time color capture and processing
- Image processing system: analyze color changes based on RGB and HSV models
- Automatic control system: adjust titration rate, stirring and gas flow
Overview of operation flow
From sample sampling (following GB/T 4756 or SH/T0635) to titration endpoint determination, standard steps must be strictly followed. The automatic instrument method greatly improves the efficiency and accuracy of the determination through programmed control.
Quality Control and Precision Analysis
| Indicator Type | Manual Titration | Automatic Titration |
|---|---|---|
| Repeatability(r) | $0.013~2X_{1}^{0.5}$ | $0.00243X_{1}^{0.315}$ |
| Reproducibility(R) | $0.0406X_{2}^{0.5}$ | $0.00616X_{2}^{0.315}$ |
Implementation recommendations and precautions
To ensure the reliability of the measurement results, it is recommended to:
- Regularly calibrate key instrument components (such as flow meters and titrators)
- Use standard QC samples for performance verification
- Operators must receive professional training and be familiar with the safe handling regulations for hazardous chemicals
- Automatic titration is recommended to improve efficiency and precision
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