Desulfurization and Regeneration Performance of Sorbent Prepared by Subcritical Water Impregnation
A series of metal oxides sorbents supported on γ-Al2O3 were directly prepared by subcritical water impregnation (SCWI) method using an autoclave reactor.The effects of active components,preparation pressure,temperature,and time on the desulfurization activity of sorbents in hot coal-based gases at mid-temperature were investigated.The samples were characterized by X-ray diffraction (XRD),nitrogen adsorption and atomic absorption spectrophotometer (AAS).The results showed that Mn-based sorbent loaded on γ-Al2O3 by SCWI presented a good desulfurization performance.The optimal preparation parameters of sorbent were the temperature of 350 ℃,the pressure of 18.9 MPa,impregnation time of 30 min,the precursor solution concentration of 0.287 mol/L and the volume of 100 ml,respectively.The Mn/γ-Al2O3 sorbent prepared under the optimal conditions presented a good desulfurization precision and regeneration performance.After regeneration,the mechanical strengths of the sorbents were higher than that of raw support and the breakthrough time at the desulfurization efficiency of above 99% was not obviously decreased.
Coal-based gas Desulfurization MnOx/γ-Al2O3 Sub-critical water impregnation
Haochen Qin Lianwei Liu Weiping Si Liping Chang Weiren Bao Lina Han
Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province,Taiyuan U Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province,Taiyuan U
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
443-448
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）