- Home>
- Products & Solutions:
- Industrial Automation and Control Business:
- Application Notes:
- Iron and Steel:
- Air Leak Detection in Sintering Furnaces:
- Bag Filter Breakage Detection in a Pulverized Coal Injection System:
- Control of Carbon Potential in Carbonizing Furnaces:
- Dust Monitoring to Detect Damage:
- Measurement of O2 Concentration in Hot Blast Stoves:
- Measurement and Monitoring of O2 Concentrations>
- Bag Filter Breakage Detection
in a Pulverized Coal Injection System
Bag Filter Breakage Detection
in a Pulverized Coal Injection System
| Industry | : Iron and Steel |
| Product | : Dust Monitor (DT450G) |
Introduction
Pulverized coal injection system
| In pulverized coal injection systems used by the iron and steel industry, a bag filter separates pulverized coal from hot air. The pulverized coal is then conveyed to a storage tank and the hot air is discharged to the atmosphere. If the bag filter breaks, pulverized coal leaks out into the atmosphere. In order to prevent air pollution, bag filter leaks must be detected quickly. Designed for this purpose, the DT450G Dust Monitor is easy to install and requires minimal maintenance. |
Process Overview
| A pulverized coal injection system consists of a pulverizing mill, a filtering system, storage tanks, and a blast furnace. Coal comes in through a bunker and is pulverized in a pulverizing mill. The pulverized coal is carried by hot air into a storage tank for drying, and the hot air is emitted to the atmosphere through a bag filter. |
Expected Benefits
| - | Prompt response to bag filter breaks |
| - | Reduces maintenance and running cost of bag filter |
| - | Keeps the initial cost of equipment replacement to a minimum |
Conclusion
| - |
Data collected by the dust monitor helps detect bag breaks, and the data collected at backwashing helps identify which compartment
bag filter is broken. |
| - |
Reduced maintenance workload and proper replacement of facilities bring cost savings. |
Solution Details
Gas Flow
| Process Conditions | |
| Measuring point: | Bag filter's outlet stack |
| Dust concentration: | 6 g/Nm |
| (when bag filter is broken) | |
| Particle diameter: | 20 microns |
| Velocity: | 17 m/s |
| Humidity: | 2 vol% |
| Temperature: | 80 to 100 °C |
Trend Data
| Trend Data | |
| - | Trend data shows that there is a correlation between the dust amount and the |
| of the dust monitor. | |
| - | The DT450G Dust Monitor operated for more than two months without maintenance. |
DT 450G Dust Monitor
DT 450G
| The microprocessor-based DT450G Dust Monitor features improved operational performance and reliability. Features include one-touch automatic range setup in response to process conditions and automatic drift compensation. Also, the DT450G can measure at a process temperature of up to 250 °C, allowing it to cover a wide range of applications. |
Viewing pdf files requires Adobe Reader
