Basic specifications for industrial fuel fired installations—Part 1: General
1Key Takeaways
This document specifies the technical requirements, test methods, inspection rules, identification marks, packaging, transportation, storage and ordering and supply of various industrial fuel heating devices (hereinafter referred to as fuel heating devices). This document applies to fuel heating devices that use solid,…
2Expert Interpretation
Professionally interpret the general technical requirements for industrial fuel heating devices in GB/T20115.1-2021 standard, covering core contents such as fuel selection, combustion device design, energy-saving and environmental protection measures, and energy consumption level classification, and provide key points for standard updates and technical implementation guidelines.
Core changes in the standard revision
| Technical fields | Requirements of the 2006 version | Updates to the 2021 version | Technical impact |
|---|---|---|---|
| Terminology system | 12 basic terms | 7 new key terms (such as excess air coefficient, unit energy consumption) | Improved the quantitative evaluation indicators of combustion efficiency |
| Combustion control | Traditional combustion methods | 8 new technologies such as pulse combustion and staged combustion were added | Thermal efficiency was improved by 15-30% |
| Environmental protection requirements | General emission restrictions | Mandatory configuration of nitrogen and sulfur pollutant treatment equipment | Emissions reduced by more than 40% |
Key technology implementation points
Combustion device selection matrix
Taking gas annealing furnace as an example, Clause 5.5 of the standard clearly requires the selection of burner type according to the furnace temperature curve:
- Below 1000℃: Diffusion burner is preferred
- 1000-1300℃: Premixed high-speed burner is recommended
- Above 1300℃: Full oxygen combustion system must be used
Energy-saving Technology Application Specifications
Article 5.9 of the standard specifies the design thresholds of waste heat recovery devices in detail:
| Exhaust gas temperature | Mandatory configuration requirements | Heat recovery rate |
|---|---|---|
| ≥600℃ | Heat exchanger must be installed | ≥65% |
| 400-600℃ | It is recommended to configure a heat pipe device | 40-60% |
Compliance Implementation Recommendations
- Design stage: Complete the heat balance calculation according to the requirements of Article 5.10, and focus on checking the excess air coefficient (α≤1.2)
- Manufacturing stage: Strictly follow the signboard production specifications of Article 5.17.8, and use etching technology to ensure durability
- Acceptance test: According to the energy consumption classification standard of Article 7.7, the unit energy consumption of the special furnace should be ≤1.2GJ/t