Experimental research on ultra-deep desulfurization of natural gas and influence of Ni content of Cu-Zn-Ni/Al_2O_3 desulfurizer on desulfurization performance
By co-precipitation and then traditional impregnation,Cu-Zn-Ni/Al2O3 desulfurizers of the Ni loading of 0,5%,10% have been prepared and their desulfurization performance have been studied through natural gas experiment.The results show that proper Ni content can improve the deep desulfurization ability(10×10-9 m3/m3) of Cu-Zn-Ni/Al2O3 catalyst,and the ability of desulfurization becomes better and more steady at the end with the temperature increasing.Under the conditions of space velocity(SV) 400,1 200 and 2 400 h-1,the best desulfurization ability is obtained at Ni loading of 5%,and the ability of desulfurization can be 5×10-9,5×10-9 and 6×10-9 m3/m3 at the temperature of 280 ℃.Under the condition of SV 400 and 1 200 h-1,the ability of desulfurization without Ni is better than the one at Ni loading of 10%.Under the condition of SV 2 400 h-1,the ability of desulfurization at Ni loading of 10% is better than the one without Ni.