煅烧、焙烧联合烟气半干法脱硫装置及方法
By combining multiple sets of semi-dry desulfurization and dust removal devices and conditioning reactors, the problem of ultra-low emissions of calcination and roasting flue gas in the electrolytic aluminum industry has been solved, achieving stable operation and efficient purification of calcination furnaces and roasting furnaces, and reducing energy waste and flue fire risk.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUJIAN LONGKING DSDN ENGINEERING CO LTD
- Filing Date
- 2023-08-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to effectively address the ultra-low emission requirements of flue gas during the anode calcination and roasting processes in the electrolytic aluminum industry, especially the flue gas emission problem during the start-up and baking stages of the calcination furnace and roasting furnace. Furthermore, a single set of desulfurization and dust removal devices is prone to equipment failure, energy waste, and low absorbent utilization.
Multiple sets of semi-dry desulfurization and dust removal devices are adopted. Through the combination of conditioning reactors and flow control valves, calcination and roasting flue gas are treated separately to avoid bag clogging. After the flue gas is mixed, it enters the semi-dry desulfurization and dust removal device for purification, realizing the pre-removal and stable operation of the flue gas.
It solved the flue gas emission problem during the start-up and baking stages of calcining and roasting furnaces, improved system stability and absorbent utilization, reduced energy waste, avoided the risk of flue gas ignition, and achieved efficient flue gas purification.
Smart Images
Figure CN116832591B_ABST