甲酸和乙酸对柴油催化脱硫催化剂性能的影响

Effect of Formic Acid and Acetic Acid Catalyst-accelerator on the Behavior of Diesel Catalytic Oxidation Desulfurization Catalyst

为满足日益苛刻的柴油含硫标准,目前国内外正在加紧研究柴油非加氢脱硫技术。采用TS-1柴油催化氧化脱硫催化剂可达到较好的脱硫效果,但催化剂用量大,给脱硫操作带来不便。通过加入甲酸、乙酸助催化剂,考查它们对催化剂的性能影响。试验研究表明,采用甲酸、乙酸助剂后,TS-1用量分别下降了50%和61 11%,脱硫率增加了15 63%和18 11%,大大改善了柴油催化氧化脱硫催化剂TS-1的性能,提高了催化活性,脱硫柴油硫含量达到欧洲Ⅱ#柴油标准(总硫<300μg g)。

The non-hydrogen-reducing desulfurization methods have been developing all over the world in order to meet the diesel oil sulfur-containing standards that become more and more rigorous.Though TS-1,one of diesel oil catalytic oxidation desulfurization catalyst,can attain a good result of desulfurization,its dosage is too high to inconvenience to the operation.Introducing formic acid and acetic acid as catalyst-accelerators,and their effects on its capability were examined.The research showed that owing to the add of these two additives,the dosage of TS-1 can be redeuced to 50 percents and 6111 percents respectively and the desulfurization ratio reached to 1563 percents and 1811 percents respectively.The accelerators improve both the capability and activity of the TS-1 catalyst.Consequently,after desulfurization,the amount of the sulfur in the diesel fuel suffices for the Europe Ⅱ# diesel standard (<300μg/g).