微波辐射柴油脱硫实验研究

Study on desulfurization for diesel oil by microwave irradiation

采用微波辅助氧化反应的方法对辽河常二线柴油配制油样进行了脱硫实验,过氧化氢作氧化剂,可以把柴油中的含硫化合物有选择性地氧化成相应的具有很强极性的砜,根据相似相溶原理,这些砜因溶于剂相而从柴油中除去,从而降低了硫含量。实验过程中分别考察了氧化剂用量、剂油比、反应体系压力、氧化时间、微波功率等对柴油硫含量的影响。确定了实验室适宜的操作条件:剂油体积比为0.25∶1,微波辐射压力为0.05MPa,微波功率为375W,辐射时间为6min,柴油的脱硫率为60%,而在无微波辐射的条件下,脱硫率仅为12%。

The microwave technology is introduced for the desulfurization from rude oil.In the paper,the atmospheric diside-cut diesel oil,which was supplied by LiaoHe Petrochemical Company,was desulfurized by an oxidation process assisted by microwave.Hydrogen peroxide(H_2O_2),a strong oxidizing agent can oxidize the sulfur compounds in diesel oil selectively and convert them to sulfones.Base on the like dissolves like law;these sulfones can be removed fromdiesel oil because they can be dissolved in solvent phase.So the content of sulfur indiesel oil is decreased.The influences of the concentration of oxidizing agent,oil phase -to- solvent phase volume ratio(S/O),irradiation pressure,irradiation time,irradiation power have been investigated.The optimum technology conditions for the refining process were determined.The removal rate of sulfur was 60% when the optimum conditions were suggested to be 8%H_2O_2,S/O=(0.25,)0.05MPa,6?min,375W,respectively.While in the condition that there was no microwave irradiation,the removal rate only was 12%.