Crude oil nucleophilic deconstruction aid as well as preparation method and application thereof

The invention discloses a crude oil nucleophilic deconstruction aid as well as a preparation method and application thereof, and belongs to the technical field of additives in a petroleum refining process. The nucleophilic deconstruction aid is composed of a high-alkalinity metal detergent, a high-molecular ashless dispersant, a polyol ethylene-propylene copolymer, a fatty alcohol ethylene-propylene copolymer and a solvent. According to the present invention, the crude oil pretreatment agent has good solubility and good dispersion performance on the micelles formed by colloid, asphaltene, water, water-soluble salt, organic chlorine, mechanical impurities and the like in the crude oil, and has good removal performance on the chloride ions in the crude oil so as to improve the quality and the processability of the pretreated crude oil; 本发明公开了一种原油亲核解构助剂及其制备方法和应用，属于石油炼制过程中的添加剂技术领域；所述亲核解构助剂由高碱性金属清净剂、高分子无灰分散剂、多元醇乙丙共聚物、脂肪醇乙丙共聚物及溶剂组成。其对存在于原油中由于胶质、沥青质以及水分、水溶性盐分、有机氯、机械杂质等所形成的胶团，具有良好的溶解性和分散性能，且对原油中的氯离子有良好的脱除性能，进而提升原油预处理