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首页> 外文期刊>Fuel >Octane enhancement by the selective separation of branched and linear paraffins in naphthas using a PVDC-PVC carbon molecular sieve
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Octane enhancement by the selective separation of branched and linear paraffins in naphthas using a PVDC-PVC carbon molecular sieve

机译：通过使用PVDC-PVC碳分子筛选择性分离石脑油中的支链和线性石蜡来提高辛烷值

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摘要

Silicalite-1 samples and PVDC based Carbon Molecular Sieve (CMS-IMP12) material were compared in the separation of linear and multi-branched paraffins present in a real feedstock by fixed bed adsorption experiments. The CMS-IMP12 material was obtained from the pyrolysis of a poly-(vinylidene choride-co-vinyl chloride) (PVDC-PVC) polymer commercially known as Saran™. Material balances of the breakthrough experiments showed higher adsorption capacities for the CMS-IMP12 (5.4-8.8 g/100 g-adsorbent) than for silicalite-1 (1.2-3.4 g/100 g-adsorbent) at the temperature range studied (175-325 ℃). Additionally, the octane number increment for the CMS-IMP12 was at least 4 units higher for the same amount of recovered non-adsorbed fraction (1.5 g/100 g-adsorbent). In order to simplify the description of the hydrocarbon mixture, the alkanes were classified according to their degree of branching as: linear, monomethyl, dimethyl (non-gem), dimethyl (gem) and trimethyl alkanes. Similarly, cycloalkanes as: non-branched (cyclopentane and cyclohexane), monomethyl, dimethyl (non-gem), dimethyl (gem) and trimethyl cycloalkanes, where gem refers to the relationship between two methyl groups that are attached to the same carbon atom. The CMS-IMP12 was able to separate gem-dimethylalkanes, gem-dimethylcycloalkanes and trimethylalkanes, while silicalite-1 was less selective.
机译：通过固定床吸附实验，比较了Silicalite-1样品和基于PVDC的碳分子筛（CMS-IMP12）材料在真实原料中存在的线性和多支链烷烃的分离中。 CMS-IMP12材料是通过热解商业上称为Saran™的聚（偏二氯乙烯-共氯乙烯）（PVDC-PVC）聚合物获得的。突破性实验的材料平衡表明，在所研究的温度范围内（175-175°C），CMS-IMP12（5.4-8.8 g / 100 g-吸附剂）的吸附能力高于silicalite-1（1.2-3.4 g / 100 g-吸附剂）。 325℃）。另外，对于相同量的回收的未吸附馏分（1.5 g / 100 g吸附剂），CMS-IMP12的辛烷值增量至少高出4个单位。为了简化对烃混合物的描述，根据烷烃的支化程度将其分类为：直链，单甲基，二甲基（非Gem），二甲基（gem）和三甲基烷烃。类似地，环烷烃为：非支链（环戊烷和环己烷），单甲基，二甲基（非宝石），二甲基（宝石）和三甲基环烷烃，其中gem表示连接至同一碳原子的两个甲基之间的关系。 CMS-IMP12能够分离出宝石二甲基烷烃，宝石二甲基环烷烃和三甲基烷烃，而silicalite-1的选择性较低。

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  • 来源
    《Fuel》 |2014年第ptaa期|660-666|共7页
  • 作者

    Georgina C. Laredo; Jose Luis Cano; Jesus Castillo; Jose A. Hernandez; Jesus O. Marroquin;

  • 作者单位

    Programa de Procesos de Transformation, Institute Mexicano del Petroleo, Lazaro Cardenas 152, Mexico 07730 D.F, Mexico;

    Programa de Procesos de Transformation, Institute Mexicano del Petroleo, Lazaro Cardenas 152, Mexico 07730 D.F, Mexico;

    Programa de Procesos de Transformation, Institute Mexicano del Petroleo, Lazaro Cardenas 152, Mexico 07730 D.F, Mexico;

    Programa de Procesos de Transformation, Institute Mexicano del Petroleo, Lazaro Cardenas 152, Mexico 07730 D.F, Mexico;

    Programa de Procesos de Transformation, Institute Mexicano del Petroleo, Lazaro Cardenas 152, Mexico 07730 D.F, Mexico;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gasolinel; Linear paraffins; Branched paraffins; Molecular sieves; Adsorption;

    机译：Gasolinel;线性石蜡;支链石蜡;分子筛吸附性;

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