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首页> 外文会议>Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals >Hydroprocessing catalysts for heavy oil upgrading
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Hydroprocessing catalysts for heavy oil upgrading

机译：加氢处理催化剂用于重油升级

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Recent technologies in heavy oil hydroprocessing upgrading and studies on new hydrocracking catalysts application in heavy oil processing are presented.Due to the thermodynamic limitation,polyaromatics in heavy oil cannot effectively be converted under conventional hydrotreating conditions and standard catalysts.Although the hydrocracking catalysts can improve the ring saturation and opening of some of the aromatics compounds,the opening sizes of the zeolites remain too small to allow larger aromatic molecules to diffuse into the active sites located inside the zeolite.A decrease of zeolite crystals to nanometer scale can lead to shorter diffusional paths of the reactant and product molecules inside the pores and consequently to a reduction or elimination of undesired diffusional limitations of the reaction rate.Data on nano-sized zeolite beta that was successfully synthesized and evaluated for heavy oil hydroprocessing are presented.
机译：介绍了重油加氢处理升级和研究中的近期技术在重型油加工中的应用。为热力学限制，在常规的加氢处理条件和标准催化剂中不能有效地转化重油中的多芳烃。虽然加氢裂化催化剂可以改善环饱和和开口一些芳烃化合物，沸石的开口尺寸保持太小，以允许较大的芳族分子扩散到位于沸石内部的活性位点。沸石晶体降低到纳米级可以导致较短的扩散路径介绍了对反应速率的反应性和消除反应速率的不需要的扩散限制的反应物和产物分子。呈现成功合成和评价重油加氢处理的纳米沸石β上的纳米沸石上的不希望的扩散局限性。

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