| In order to reduce let of motor tail gas SOX, it is a question which is regarded universally by every government in the world and the oil refining enterprises to produce and use amity-environment and low sulfur gasoline. Although conventional hydrodesulfurization (HDS) can effectively remove the majority of sulfur-containing compounds in gasoline, it is difficult to achieve the ultra-deep desulfurization. The adsorption desulfurization is one of the most promising desulfurization methods. Adsorption desulfurization has several potential advantages: (1) the process is operated at ambient temperature and atmosphere, without using any H2, which leads to low energy consumption, investment and operating cost; (2) the process is very effective for ultra-deep desulfurization of liquid hydrocarbon fuels; (3) there is no or quite small reduction of octane number. Key issue for the commercialization of deep adsorption desulfurization is to develop new adsorbents with higher sulfur capacity and stability.In this paper, a series of activated semi-cokes were prepared from raw semi-coke from lignite in Inner Mongolia by means of HCl and HF reduce ash, and activited by inorganic acid, organic acid and metal oxide. Removal performance of sulfur from FCC gasoline was evaluated using dynamic adsorption in a fixed bed reactor. The optimum of preparation parameters of adsorbents and operating desulfurization conditions on sulfur removal performance of FCC gasoline were obtainted, and the saturation sulfur capacity of desulfurizers was calculated. The kinds of sulfide in crude and desulfurized FCC gasoline is analyzed qualitatively through GC-FPD chromatograms. The physical and chemical properties of desulfurizers were characterized by several analytical instrument, and the practice experiences were provided for the industrialization of adsorptive desulfurization.The removal performance of sulfur compounds from FCC gasoline was evaluated using dynamic adsorption method. The results showed that the sulfur compounds in FCC gasoline were effective to remove. The optimum preparation, desulfurization conditions and the desulfurization efficiency of the semi-coke modified by above depicting methods are obtained as follows:①When concentration of nitric acid, activation temperature, activation time, loading amount of NiO, calcination temperature, calcinations time, adsorption temperature, space velocity and volume ratio of gasoline to adsorbent were 45%, 90℃, 2h, 1.0wt. %, 450℃, 2.0 h, 100℃, 3.0h-1 and 1.0 respectively, sulfur removal efficiency was higher, which was 81.11%;②When activation temperature of sulfur acid, calcination temperature, loading kind of oxide, calcinations time, activation time, adsorption temperature, space velocity and volume ratio of gasoline to adsorbent were 90℃, 200℃, 1.0wt.% NiO, 1.5h, 15h, 100℃, 4.0h-1 and 1.0 respectively, sulfur removal efficiency was higher, which was 76.98%;③When concentration of HCOOH, activation temperature, calcinations time, N2 calcination temperature, calcinations time, adsorption temperature, space velocity and volume ratio of gasoline to adsorbent were 88%, 80℃, 2h, 650℃, 2h, 100℃, 4.0h-1 and 1.0 respectively, sulfur removal efficiency was higher, which was 69.92%;④When concentration of chloroactic acid, activation temperature, calcination temperature, loading kind of oxide, adsorption temperature, space velocity and volume ratio of gasoline to adsorbent were 40%, 50℃, 450℃, 1.0wt.%ZnO, 100℃, 4.0h-1 and 1.0 respectively, sulfur removal efficiency was higher, which was 59.49%.The desulfurization efficiency of desulfurizer prepared by above depicting method declines very soon with time in the optimum desulfurizatited condition. Then the breakthrough sulfur capacity and saturation sulfur capacity were calculated, but they are no more than 1.0%. The results of removal performance of sulfur from thiophene and 3-methyl thiophene showed that the desulfurizer has better desulfurization efficient which on adsorbent activated by nitric acid. and the desulfurizated efficiency decreased very slow with the increase of the aged time. The saturation sulfur capacities of thiophene and 3-methyl thiophene respectively were 0.6332% and 0.8228%, and higher than gaoline in the same condition. The proximate analysis results show that, raw semi-coke is higher in oxygen-containing functional groups content and lower in fixed carbon content than traditional active carbon, including ash which is mainly consisted of the inorganic oxide such as SiO2 and Al2O3, the ash decreasted activited by HCl and HF, and de-ash by HNO3. The surface acidic and basic analytical results show that raw semi-coke contents of surface acidic and basic functional groups are lower, but the contents of basic functional groups are higher than that of acidic functional groups. The surface acidic and basic functional groups increased by inorganic acid and organic acid modified, the basic functional increased after loading metal oxid.The GC-FPD chormatograph and FT-IR Spectrogram of FCC gasoline before and after adsorption desulfurization showed that: sulfur compounds in gasoline were adsorbed remove by desulfurizer after desulfurization. The result also shows that the thiophenes and the dibenzothiophenes could be removed effectively.X-ray diffraction analysis indicated that: diffraction peaks in any form of Ni were not found before and after desulfurization in in the patterns of nitric acid modified desulfurizer, because active component was dispersed and have no focalizion on semi-coke. Diffraction peaks of ZnO was found in the desulfurizer modified by chloroactic acid befor and after desulfurization, because when Zn(NO3)2 was disassembled to ZnO in the process of calcination, the active component was not dispersed and have focalizion on semi-coke.
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