一种通过Mn修饰产生不饱和硒位点的汞吸附剂、其制备方法和应用
By preparing a mercury adsorbent with unsaturated selenium sites by modifying CuCo2Se4 spinel with Mn, the problem of low efficiency in removing elemental mercury from flue gas by activated carbon injection technology is solved, realizing efficient and economical mercury capture and recovery, which is suitable for high humidity and high SO2 concentration environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEBEI UNIV OF TECH
- Filing Date
- 2024-05-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing activated carbon injection technology is inefficient and costly in removing elemental mercury (HgO) from flue gas, and is easily affected by SO2 and H2O. It is difficult to apply effectively in environments with high humidity and high SO2 concentration, and the waste activated carbon affects the utilization value of fly ash.
Mercury adsorbents with unsaturated selenium sites were prepared by modifying CuCo2Se4 spinel with Mn. The Mn doping modulates the charge distribution, forming abundant unsaturated Se1- sites, which enhances the adsorption activity for Hg0 and reduces the HgSe formation energy barrier.
It improves the adsorption capacity and adsorption rate of elemental mercury, has good resistance to SO2 and H2O, and is suitable for the removal and recovery of mercury in coal-fired and metal smelting flue gas, making it suitable for large-scale industrial production.
Smart Images
Figure CN118558284B_ABST