Study on the Characterization of Zinc Ferrite High-temperature Coal Gas Desulfurization Agent
Using ferric nitrate, zinc nitrate, ammonia liquor and binder as main raw materials, five kinds of zinc ferrite sorbents were prepared by the coprecipitation method. The effects of the different binders on the structure and texture of zinc ferrite sorbents were investigated. The morphology, composite structure, pore properties, and mechanical strength were studied by using modern several physicochemical techniques such as powder X-ray diffraction (XRD), scanning electronic microscopy (SEM), strength tester and gas absorption meter. It is showed that spinel structure ZnFe2O4 is not affected by different binders, and its particle diameter is in micron level. The spinel structures are present in the sorbents that have been calcined at 750 0C. The sorbent employed kaolinite as binder is the best one of the five types of sorbents for desulfurization, while the one employed diatomite is the worst.Different binders modify the textural properties, modifying consequently the sorbent reactivity. Furthermore, the reactivity and sulfur capacity of sorbents are increasing with an increase in the pore volume.
high temperature coal gas zinc ferrite sorbents desulfurization
Xu Hongyan Liang Meisheng Li Chunhu
College of Resources and Environment,Hebei Polytechnic University,Tangshan,China Key Laboratory for Coal Science and Technology of Shanxi Province and Ministry of Education,Taiyuan Chemistry and Chemical Engineering College,Ocean University of China,Qingdao,China
国际会议
2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)
重庆
英文
1233-1237
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）