GB/T 41664-2022 in English
VALIDEvaluation method and test rules of low NOx oil and gas combustor
- Issued on:2022-07-11
- Implemented on:2022-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$160.00
$156.00
$156.00
《GB/T 41664-2022低NOx燃油燃气燃烧器评价方法与试验规则》由TC441（全国燃烧节能净化标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of key technologies for low nitrogen burner evaluation
| Key parameters | Gas burner | Oil burner |
|---|---|---|
| Lower limit of combustion efficiency | ≥99.9% | ≥99.9% |
| Furnace volume heat load | ≥1.0×10⁶W/m³ | ≥1.2×10⁶W/m³ |
| Excess air coefficient | 1.2 | 1.3 |
Key points for the implementation of test rules
fuel flow meter and fuel flow meterFlue gas analyzer, in which:
- Fuel sampling must comply with the requirements of GB/T13610 gas chromatography
- The combustion chamber must be equipped with ≥4 temperature probes with a spacing of 150-250mm
- Flow regulation accuracy requirement ±0.5% (compared with the rated value)
N Ox emission level weighting method
| Load rate | Gas unit weight | Oil unit weight |
|---|---|---|
| 100% | 30% | 30% |
| 80% | 30% | 30% |
| 80% | 30% | 30% |
| 25% | 25% | |
| 50% | 10% | 10% |
| 30% | 5% | 5% |
Implementation Suggestions and Application Cases
A power plant equipped with 30MW gas-fired units was>premix burner was tested and the results were measured under the condition of 3.5% reference oxygen content:
- Rated load NOx emission value: 28mg/m³
- 50% load section stable temperature control error: ±0.8℃
- Comprehensive weighted emission value: 39mg/m³ (reaching M2 level certification)
Sample only — not a preview of GB/T 41664-2022
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