在微波辅助条件下,以HCOOH为催化剂、H₂O₂为氧化剂、甲醇为萃取剂,考察了不同H₂O₂体系对煤沥青中硫的脱除效果,并对最佳H₂O₂体系的实验条件进行优化。结果表明,HCOOH-H₂O₂-甲醇组成的氧化-萃取体系可有效脱除煤沥青中含有的硫化合物,实验得到的最优脱硫条件为:煤沥青粒度为0.075~0.3 mm、甲醇用量为6 mL、体积比为1:1的HCOOH与H₂O₂共10 mL、微波功率为500 W、温度为40℃、辐射30 min。在此脱硫条件下,煤沥青中硫的去除率可达23.9%。

Under microwave-assisted conditions,taking HCOOH as catalyst,H₂O₂ as oxidant,and methanol as extractant,the effects of different H₂O₂ systems on removing sulfur from coal tar pitch are studied and the experimental conditions of the optimal H₂O₂ system are optimized.The results show that the oxidation-extraction system composed of HCOOH-H₂O₂-methanol can effectively remove sulfur-containing compounds from coal tar pitch.The optimal desulfurization conditions obtained are as follows:the particle size of coal tar pitch is 0.075-0.3 mm,the dosage of methanol is 6 mL,the dosage of HCOOH and H₂O₂ in a ratio of 1:1 is 10 mL,microwave power is 500 W,temperature is 40℃,and the irradiation has performed for 30 min.Under these desulfurization conditions,the removal rate of sulfur in coal tar pitch can reach 23.9%.

孙万兴(1995-),男,硕士研究生,研究方向为煤沥青中硫元素的去除,513987493@qq.com