Higher concentrations of Hg can be emitted from coal pyrolysis or gasification than from coal combustion, especially elemental Hg. Highly efficient Hg removal technology from coal-derived fuel gas is thus of great imp...Higher concentrations of Hg can be emitted from coal pyrolysis or gasification than from coal combustion, especially elemental Hg. Highly efficient Hg removal technology from coal-derived fuel gas is thus of great importance. Based on the very excellent Hg removal ability of Pd and the high adsorption abilities of activated carbon（AC） for H2 S and Hg, a series of Pd/AC sorbents was prepared by using pore volume impregnation, and their performance in capturing Hg and H2 S from coal-derived fuel gas was investigated using a laboratory-scale fixed-bed reactor. The effects of loading amount, reaction temperature and reaction atmosphere on Hg removal from coal-derived fuel gas were studied. The sorbents were characterized by N2 adsorption, X-ray diffraction（XRD） and X-ray photoelectron spectroscopy（XPS）. The results indicated that the efficiency of Hg removal increased with the increasing of Pd loading amount, but the effective utilization rate of the active component Pd decreased significantly at the same time. High temperature had a negative influence on the Hg removal. The efficiency of Hg removal in the N2-H2S-H2-CO-Hg atmosphere（simulated coal gas） was higher than that in N2-H2S-Hg and N2-Hg atmospheres, which showed that H2 and CO, with their reducing capacity, could benefit promote the removal of Hg. The XPS results suggested that there were two different ways of capturing Hg over sorbents in N2-H2S-Hg and N2-Hg atmospheres.展开更多
Mixed coordination compounds M(α AP)2(OAc)2 (M=Ni, Zn) were synthesized individually via solid phase reactions between α aminopyridine and nickel acetate or zinc acetate at room temperature and were characterized by...Mixed coordination compounds M(α AP)2(OAc)2 (M=Ni, Zn) were synthesized individually via solid phase reactions between α aminopyridine and nickel acetate or zinc acetate at room temperature and were characterized by elemental analysis, IR and X ray powder diffraction. Zn(α AP)2(OAc)2 was also determined by 1H NMR, TGA and X ray single crystal diffraction. The crystal belongs tomonoclinic system with space group P21/c, a=9.1900(18)?, b=13.900(3)?, c=13.310(3)?, β=92.40(3)°, V=1698.7(6)?3, Dc=1.453g·cm-3, Z=4,F(000)=768, μ=1.469mm-1, R1=0.0376, wR2=0.1202. Each zinc?atom lies at the center of a distorted tetrahedron composed of two oxygen atoms from a pair of monodentate acetate groups and two nitrogen atoms from a pair of pyridine rings.展开更多
宁波亚洲浆纸业有限公司新增一条浆线,由ANDRITZ提供ONP浆线的设备、控制程序的逻辑图纸。公司自动化班把ANDRITZ提供的逻辑转换成ABB800xA系统下的control biuld m professional 4.1 FBD语言,根据提供的流程图自行设计DCS画面,根据提...宁波亚洲浆纸业有限公司新增一条浆线,由ANDRITZ提供ONP浆线的设备、控制程序的逻辑图纸。公司自动化班把ANDRITZ提供的逻辑转换成ABB800xA系统下的control biuld m professional 4.1 FBD语言,根据提供的流程图自行设计DCS画面,根据提供的仪器仪表设备清单进行I/O设计以及在原有系统的基础上选择ABB 800xA的硬件。展开更多
基金supported by the National Natural Science Foundation of China (Nos. 21006067, 21276170)the Shanxi Province Natural Science Foundation (Nos. 2010021008-1, 201101008-4)the National High-Tech Research and Development Program (863) of China (No. 2013AA065404E)
文摘Higher concentrations of Hg can be emitted from coal pyrolysis or gasification than from coal combustion, especially elemental Hg. Highly efficient Hg removal technology from coal-derived fuel gas is thus of great importance. Based on the very excellent Hg removal ability of Pd and the high adsorption abilities of activated carbon（AC） for H2 S and Hg, a series of Pd/AC sorbents was prepared by using pore volume impregnation, and their performance in capturing Hg and H2 S from coal-derived fuel gas was investigated using a laboratory-scale fixed-bed reactor. The effects of loading amount, reaction temperature and reaction atmosphere on Hg removal from coal-derived fuel gas were studied. The sorbents were characterized by N2 adsorption, X-ray diffraction（XRD） and X-ray photoelectron spectroscopy（XPS）. The results indicated that the efficiency of Hg removal increased with the increasing of Pd loading amount, but the effective utilization rate of the active component Pd decreased significantly at the same time. High temperature had a negative influence on the Hg removal. The efficiency of Hg removal in the N2-H2S-H2-CO-Hg atmosphere（simulated coal gas） was higher than that in N2-H2S-Hg and N2-Hg atmospheres, which showed that H2 and CO, with their reducing capacity, could benefit promote the removal of Hg. The XPS results suggested that there were two different ways of capturing Hg over sorbents in N2-H2S-Hg and N2-Hg atmospheres.
文摘Mixed coordination compounds M(α AP)2(OAc)2 (M=Ni, Zn) were synthesized individually via solid phase reactions between α aminopyridine and nickel acetate or zinc acetate at room temperature and were characterized by elemental analysis, IR and X ray powder diffraction. Zn(α AP)2(OAc)2 was also determined by 1H NMR, TGA and X ray single crystal diffraction. The crystal belongs tomonoclinic system with space group P21/c, a=9.1900(18)?, b=13.900(3)?, c=13.310(3)?, β=92.40(3)°, V=1698.7(6)?3, Dc=1.453g·cm-3, Z=4,F(000)=768, μ=1.469mm-1, R1=0.0376, wR2=0.1202. Each zinc?atom lies at the center of a distorted tetrahedron composed of two oxygen atoms from a pair of monodentate acetate groups and two nitrogen atoms from a pair of pyridine rings.
文摘宁波亚洲浆纸业有限公司新增一条浆线,由ANDRITZ提供ONP浆线的设备、控制程序的逻辑图纸。公司自动化班把ANDRITZ提供的逻辑转换成ABB800xA系统下的control biuld m professional 4.1 FBD语言,根据提供的流程图自行设计DCS画面,根据提供的仪器仪表设备清单进行I/O设计以及在原有系统的基础上选择ABB 800xA的硬件。
