A derivatization NMR method for characterization of organic sulfur compounds in petroleum and its residuum was described.
提出用衍生物- NMR表征石油中的有机硫结构的方法。
Vacuum residuum emulsifying process comprises mixing vacuum residuum, water and emulsifier containing petroleum sulfonate-formaldehyde condensate through stirring.
一种减压渣油的乳化方法，是将减压渣油、水以及含有石油磺酸盐甲醛缩合物的乳化剂混合，搅拌均匀即可。
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