一种非选择性硫基重金属挑出稳定剂及其制备方法和应用
By using a non-selective sulfur-based heavy metal pickering stabilizer in waste incineration fly ash and utilizing gas-solid reaction to block dioxin formation, the problem of harmless treatment of heavy metals and dioxins has been solved, achieving efficient and low-cost harmless treatment of fly ash.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI UNIV
- Filing Date
- 2024-04-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to effectively reduce the formation of heavy metals and dioxins in fly ash from waste incineration, resulting in high costs for harmless treatment and making large-scale application difficult.
A non-selective sulfur-based heavy metal picker is used, and desulfurized ash pretreated by oxidation is used as a carrier. It combines components such as triethanolamine, calcium formate and star-shaped hyperbranched polymer to carry out gas-solid reaction in the combustion chamber, so as to achieve indiscriminate sulfurization and fixation of heavy metals and block the formation of dioxins.
It achieves a heavy metal removal efficiency of over 95%, reduces dioxin toxicity by two orders of magnitude, is inexpensive, suitable for large-scale promotion and application, and avoids secondary pollution.
Smart Images
Figure BDA0004782692320000051 
Figure BDA0004782692320000061 
Figure BDA0004782692320000062