Sep 29, 2026Technology
How a Three-Stage Grate Furnace Incinerator Works
How a three-stage mechanical grate furnace achieves stable combustion in small waste-to-energy plants, including its modular design and 50+ patents.
The scaling-down barrier
A long-standing challenge in waste-to-energy was that large grate furnaces could not be scaled down without losing efficiency, leaving small plants with incomplete combustion and poor pollutant control.
Three-stage mechanical grate design
Qingfeng's improved three-stage mechanical reciprocating grate furnace breaks that barrier. Its modular grate design allows thorough preheating and combustion, customizing capacity from 50 to 300 tons/day within one system.
Handling difficult waste
Unlike traditional furnaces, it handles waste with varying composition and moisture, including high-moisture, high-ash, low-calorific rural waste, while maintaining stable and efficient performance.
