GB/T 45754-2025 in English
VALIDTechnical specifications for equipment of converter primary flue gas dry cleaning and recovery system
- Issued on:2025-05-30
- Implemented on:2025-09-01
- File Format:PDF
- Delivery:Via email within 5 business days
$422.00
| Standard No: | GB/T 45754-2025 |
| Document status: | VALID |
| Title in English: | Technical specifications for equipment of converter primary flue gas dry cleaning and recovery system |
| Title in Chinese: | 转炉一次烟气干法净化与煤气回收系统设备技术规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2025-05-30 |
| Implemented on: | 2025-09-01 |
| ICS Classification: | 13.020-Environmental protection |
| Chinese Classification: | Z05-Specifications for pollution control |
| Professional Classification: | GB-National Standard |
| Related Keywords: | flue gas treatment system
primary flue gas flue gas treatment capacity recovery system introduction analysis standard technical framework |
| Related Topics: | Six and a half dry run
recycling system technology transfer system Flue gas online system acceptance technology |
《GB/T 45754-2025转炉一次烟气干法净化与煤气回收系统设备技术规范》由TC409（全国冶金设备标准化技术委员会）归口，主管部门为国家标准委。
Introduction
Analysis of the standard technical framework
The specification system stipulates the technical requirements for the flue gas treatment system for 80-400 ton converters. The core consists of 6 major equipment, including evaporative cooler, cylindrical electrostatic precipitator, etc., with a flue gas treatment capacity of 50,000-300,000m³/h and a maximum temperature tolerance of 1100℃.
Key Equipment Technology Comparison
| Equipment | Core Parameters | Installation Accuracy | Explosion-proof Requirements |
|---|---|---|---|
| Evaporative Cooler | Diameter 4-10m, Atomized Water Completely Evaporated | Diameter Deviation ≤20mm | Zone 2 Explosion-proof |
| Cylindrical Electrostatic Precipitator | Diameter 8.2-16.5m, Electric Field ≥4 | Coaxiality ≤6mm | Explosion Relief Valve Configuration |
| Blower system | Air volume 320,000m³/h, full pressure 12kPa | Dynamic balance G2.5 level | Explosion-proof frequency conversion |
Technical innovation points
Dual-media spray gun technology: Adopting internal mixing/external mixing design, the pressure fluid is mixed to produce 10-100μm-level atomized particles, ensuring that the raw gas is quickly cooled to below 250℃.
Breakthrough in cylindrical electrostatic precipitator: The unique plug-shaped flow design increases the smoke residence time by 30%, and cooperates with the scraping device to achieve export dust ≤10mg/m³.
Implementation suggestions
- Installation phase: The ring beam pair of the electrostatic precipitator needs to be controlled by a laser rangefinder, and the diameter deviation is controlled within D/1000mm
- Debugging points: 72 hours of no-load operation must be completed before the load test, and the vibration value of the fan bearing must be monitored ≤4.5mm/s
- Safety protection: Fixed gas alarms should be installed around all equipment, and the alarm concentration should be set to 24ppm
Standard evolution analysis
Compared with the 2012 version of JB/T11312 standard, the new regulations have the following improvements:
- Additional airtightness test requirements for gas coolers (maintaining pressure at 1.5 times the pressure for 60min)
- Refine the installation tolerance of the scraping device of the electrostatic precipitator (±5mm)
- Force the UPS power backup time to be ≥30 minutes
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