Coal Gasifier-Compatible Grinding Mills: Key Features and Selection Guide
Introduction to Coal Gasification Grinding Requirements
Coal gasification demands precise particle size control to ensure optimal reaction efficiency in gasifiers. The grinding process must achieve uniform fineness (typically 80-90% passing 200 mesh/74μm) while maintaining energy efficiency and equipment durability under high-abrasion conditions.
Critical Parameters for Gasifier-Compatible Mills
- Particle Size Distribution: Narrow range with D90≤100μm
- Moisture Handling: Capability to process coal with ≤15% surface moisture
- Wear Resistance: Minimum 8,000 operational hours between major maintenance
- Energy Consumption: ≤15kWh/t for bituminous coal grinding
ZENITH’s Recommended Solutions
With 30+ years in grinding technology, ZENITH offers specialized mills meeting gasification requirements:
1. LM Vertical Coal Mill Series
Our LM-M series vertical mills feature patented grinding technology specifically optimized for coal preparation:
- Hot air drying integrated with grinding process
- Dynamic separator ensures precise particle cut
- Special alloy rollers with 12,000+ hour lifespan
Recommended Model: LM220M with 35-50t/h capacity and 500kW main motor, achieving 95% <200 mesh output with 12.8kWh/t energy consumption.
2. MTW European Trapezium Mill
For smaller-scale gasification plants, our MTW215G trapezium mill delivers:
- Curved air duct design reduces energy loss by 15%
- Combined blade system cuts maintenance frequency
- 15-45t/h capacity range with 280kW power
Selection Criteria Comparison
| Feature | LM Vertical Mill | MTW Trapezium Mill |
|---|---|---|
| Optimal Capacity Range | 20-250t/h | 3-45t/h |
| Energy Efficiency | ★★★★★ (12-14kWh/t) | ★★★★ (14-16kWh/t) |
| Moisture Tolerance | Up to 20% | Up to 15% |
| Footprint | Compact (50% space saving) | Moderate |
Technical Support and Service
ZENITH provides comprehensive gasifier grinding solutions including:
- Material test grinding with our laboratory facilities
- Customized wear protection solutions
- Remote monitoring system integration
- Global spare parts network with 72-hour emergency response
Our engineering team has successfully implemented coal grinding systems for 40+ gasification projects worldwide, including Shell, GE, and Siemens gasifier applications.
