新型脱硫材料SbSn金属间化合物的制备及其脱硫性能

新型脱硫材料SbSn金属间化合物的制备及其脱硫性能

  • 摘要: 以Sb、Sn为原料,在氮气氛下采用熔炼法制备出SbSn金属间化合物。正庚烷中加入少量噻吩配制成模拟油品,将模拟油品和汽油分别配制成两种乳状液进行脱硫实验。在密闭反应器中,SbSn和配制好的乳状液按一定比例在常温常压下搅拌反应一定时间即完成脱硫过程。结果表明,较好的SbSn金属间化合物的制备条件为Sb∶Sn质量比为49∶51、950℃、反应60min、Sb粒径<200目和快速冷却。这种新型材料在常温常压下对于模拟油品中噻吩的单程脱除率在15%左右,汽油单程脱硫率为11.8%。选用了三种方法对脱硫后的SbSn进行清洗,结果表明,用甲苯清洗过的SbSn金属间化合物,再次脱硫能力明显好于其他两种方式。材料经甲苯清洗,三次循环脱硫实验结果表明,模拟油品脱硫率可达到32%,汽油脱硫率为27%。

     

    Abstract: Preparation conditions of SbSn intermetallic compound by melting and performance of desulfurization using the new material were investigated. Gasoline and a simulated oil which consists of heptane and thiophene were used respectively in the desulfurization experiments. Before the desulfurization, both of the gasoline and the simulated oil were emulsified. The results show that the preferable preparation conditions are: m(Sb)∶m(Sn)=49∶51, melting temperature 950℃, melting time 60min, particle size of Sb less than 200mesh and using fast cooling. The positive results of desulfurization experiments for the simulated oil and gasoline were obtained by using the SbSn intermetallic compound. The sulfur removal efficiency of 15% for the simulated oil and 11.8% for the gasoline are obtained in a single pass under room temperature and ambient pressure while combined suitable emulsification. Several methods were used to clean the SbSn intermetallic compound. The results show that the clean method by using toluene is a preferable one. The removal efficiency of 32% for simulated oil and 27% for gasoline are obtained after thrice loop operations.

     

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