| 温度对改性矿物吸附剂脱除气态汞影响 |
| |
| 引用本文： | 崔夏,马丽萍,张杭,毛宇,谢龙贵.温度对改性矿物吸附剂脱除气态汞影响[J].环境工程学报,2012,6(12):4596-4602. |
| |
| 作者姓名： | 崔夏 马丽萍 张杭 毛宇 谢龙贵 |
| |
| 作者单位： | 昆明理工大学环境科学与工程学院,昆明,650093 |
| |
| 基金项目： | 教育部留学回国人员启动基金资助项目(50869003) |
| |
| 摘 要： | 以蛭石、丝光沸石、膨润土及经改性后各物质为吸附剂，N2气氛下，在固定床实验台上进行了对烟气中单质汞脱除的实验研究，主要考察了温度的改变对改性矿物吸附剂脱除气态汞的影响。研究结果显示，膨润土、蛭石对汞的吸附基本不受温度的影响；未改性的吸附剂对汞的吸附能力均比较差；温度的提高有利于改性吸附剂对单质汞的脱除，说明改性后的吸附剂的脱汞过程以化学吸附为主；真正起作用的活性组分CeO2占据了丝光沸石的大部分表面积和空隙；丝光沸石经CuO改性前后吸附能力几乎未发生变化。
|
| 关 键 词： | 天然矿物 气态汞 温度 吸附 改性 |
Effect of temperature on removing mercury vapor with modified mineral adsorbent |
| |
| Cui Xi,Ma Liping,Zhang Hang,Mao Yu and Xie Longgui.Effect of temperature on removing mercury vapor with modified mineral adsorbent[J].Techniques and Equipment for Environmental Pollution Control,2012,6(12):4596-4602. |
| |
| Authors: | Cui Xi Ma Liping Zhang Hang Mao Yu and Xie Longgui |
| |
| Institution: | Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
| |
| Abstract: | A laboratory-scale fixed-bed reactor system was used to screen some sorbents (natural vermiculite, mordenite, bentonite and chemically modified sorbents) for their capability to remove elemental mercury from flue gas. The characterization of all sorbents was analyzed by the accelerated surface area porosity. Conclusively, the temperature almost had no effect on adsorption capacity of natural vermiculite, mordenite and bentonite. Natural sorbents had lower adsorption capacity. Appropriately increasing the chemically modified adsorption temperature improves the mercury removal, it suggests that their main sorption mechanism should be chemisorptions. The activity comment CeO2 takes up a majority of surface area and porosity of mordenite, and it may play a key role. However, the adsorption capability of mordenite almost has no change after CuO was modified. |
| |
| Keywords: | natural mineral mercury temperature adsorption modification |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《环境工程学报》浏览原始摘要信息 |
| 点击此处可从《环境工程学报》下载免费的PDF全文 |
|
