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Aromatic Polyisobutylene Succinimides as Viscosity Reducers with Asphaltene Dispersion Capability for Heavy and Extra-Heavy Crude Oils

机译:芳香族聚异丁烯琥珀酰亚胺可作为降粘剂,具有沥青分散能力,可用于重质和超重质原油

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摘要

Four aromatic polyisobutylene succinimides were synthesized and evaluated as viscosity reducers for heavy and extra-heavy Mexican crude oils. Because of the asphaltenic character of Mexican crude oils, aromatic heads capable of interacting with asphaltene aggregates by π-π stacking, hydrogen-bond formation, and acid-base interactions were selected. Asphaltene dispersion-aggregate inhibition and asphaltene disaggregation effects were evaluated as promoters of the viscosity reduction effect in asphaltenic crude oils, the asphaltene disaggregation being dominant Chemical compounds show good efficiency as asphaltene aggregation inhibitors and dispersants and as viscosity reducers. Higher efficiency than the dilution effect induced by the solvent carrier is observed. Both experiments were stuthed by theoretical DFT calculations. Because of the agreement between theoretical and experimental results, both mechanisms can be elucidated. Results also show that the initial asphaltene content in oils is an important parameter in the selection of chemical agents as viscosity reducers.
机译:合成了四种芳香族聚异丁烯琥珀酰亚胺,并作为重油和超重墨西哥原油的降粘剂进行了评估。由于墨西哥原油的沥青质特征,选择了能够通过π-π堆积,氢键形成和酸碱相互作用与沥青质聚集体相互作用的芳族化合物。作为沥青质原油中降粘效果的促进剂,评估了沥青质分散体的聚集抑制作用和沥青质解聚作用,其中沥青质的解聚作用占主导地位。化合物显示出良好的效率,可作为沥青质的凝聚抑制剂和分散剂以及降粘剂。观察到比溶剂载体引起的稀释效果更高的效率。这两个实验都是通过理论DFT计算进行的。由于理论和实验结果之间的一致性,可以阐明这两种机制。结果还表明,油中的初始沥青质含量是选择化学试剂作为降粘剂时的重要参数。

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  • 来源
    《Energy & fuels》 |2013年第maraaapra期|1994-2001|共8页
  • 作者单位

    Grupo de Quimica Aplicada a la Industria Petrolera,Programa de Posgrado;

    Grupo de Quimica Aplicada a la Industria Petrolera,Programa de Ing. Molecular, Institute Mexicano del Petroleo (IMP), Eje Central Lazaro Cardenas No. 152 col. San Bartolo Atepehuacan, Mexico D.F., 07730, Mexico;

    Centro de Investigaciones Quimicas, Universidad Autonoma del Estado de Morelos, Av. Universidad 1001, 62209 Cuernavaca, Morelos, Mexico;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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  • 入库时间 2022-08-18 00:40:55

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