采用Fe （NO₃）₃、Fe₂（SO₄）₃和FeCl₃溶液氧化脱除山西某焦煤中的硫，研究铁盐种类及添加无机酸对脱硫效果的影响，并利用红外光谱仪对处理前后的煤样进行表征。结果表明，Fe （NO₃）₃的脱硫效果远高于Fe₂（SO₄）₃和FeCl₃；溶液中添加H₂SO₄和HCl会抑制Fe³⁺的氧化脱硫效果；较低浓度的HNO₃促进Fe （NO₃）₃氧化脱除煤中的FeS₂和硫醇、硫醚等有机硫，而高浓度的HNO₃又会抑制Fe³⁺与FeS₂反应，致使脱硫率下降。

Fe(NO₃)₃, Fe₂(SO₄)₃ and FeCl₃ solutions are respectively used to remove sulfur from a kind of coking coal produced in a certain coal mine in Shanxi province, China.Effects of the type of ferric salt and the addition of inorganic acids on the desulfurization are investigated.In addition, FT-IR is employed to characterize and compare the coal samples before and after the desulfurization.Results show that the desulphurization effectiveness by Fe(NO₃)₃ is significantly higher than that by Fe₂(SO₄)₃ and FeCl₃;the addition of H₂SO₄ or HCl will restrain the desulfurization ability of Fe³⁺;HNO₃ with a lower concentration can improve the removal efficiency of pyrite, thioalcohol and thioether from coal by Fe(NO₃)₃, while HNO₃ with a higher concentration will inhibit the reaction between Fe³⁺ and FeS₂, resulting in a lower desulfurization efficiency.

范乐珍(1998-),女,硕士研究生,研究方向为煤脱硫,1774604400@qq.com。