the furfural extraction can reduce the polynuclear aromatic hydrocarbon content, the nitrogen content and the carbon residue of dao.
糠醛精制能大幅度降低伊朗各线原料的硫、氮及芳烃含量,大幅度降低脱沥青油的残炭值;
two section furfural extraction process was used to re-extract the deasphalted dewaxing oil and vacuum cut 3 dewaxing oil produced by jingmen subsidiary of sinopec.