deasphalting

1.So some renovations should be made,for example,increasing the solvent ratio of propane deasphalting;using hydrofinishing instead of clay treating;mo...

例如:增加丙烷脱沥青的溶剂比,用加氢制代替白土制等,此外,在含硫原生产基础时,对原也应适当选择。