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Modelling of co-processing of HDO-oil with VGO in a FCC unit

机译：在FCC单元中将HDO油与VGO共处理的建模

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摘要

As environmental policies drive to increase the renewables participation in the transportation sector, biomass-derived fuels are becoming an attractive alternative to replace, totally or partially, fossil ones. Taking into account the sustainability concerns about first generation biofuels, attention is paid to second generation ones. Their main drawbacks are the high CAPEX and OPEX required if high quality fuels are required as final product due to the current deployment of its technology. In this way, co-processing of biomass-derived feedstocks in oil refineries can be a good solution and can pave the way for the introduction of biofuels in the market, since it reduces environmental impacts from fossil fuels, decreases the oil dependency of countries and, the most important one, takes advantage of existing facilities avoiding the erection of new plants. In this work, the co-processing of hydrodeoxigenated pyrolysis oil (FIDC:1-oil, from lignocellulosic biomass) with vacuum gas oil (VGO) in a FCC unit is modelled and implemented in a calculation block in MS Excel inside Aspen Plus. 40 pseudocomponents and 10 real components are defined to represent both feedstocks and their possible cracking products. These components are used in a pseudoreaction mechanism of more than 12,000 single reactions, developed from a probabilistic reaction system. Such a large number of reactions is handled by considering key parameters for the estimation of each reaction rate constant and integrated along the riser which is modelled using a finite volume method. Tuning parameters are used to fit the model depending on the feedstock and the riser conditions, and have to be estimated using experimental data. Thereby, the kinetic reactor model allows to work with different feedstocks and conditions. Material, heat and hydrodynamic balances are performed in all volume elements of the modelled riser reactor, which results in a composition and temperature profiles along the riser. The model is validated with experimental data, showing a low relative error. Therefore, this model can be used to predict product yields, according to different feedstocks and experimental conditions. (C) 2017 Elsevier Ltd. All rights reserved.
机译：随着环境政策的推动，可再生能源在交通运输领域的参与越来越广泛，生物质衍生燃料正成为一种有吸引力的替代品，可完全或部分替代化石燃料。考虑到对第一代生物燃料的可持续性的关注，应注意第二代生物燃料。它们的主要缺点是，由于当前技术的部署，如果最终产品需要高质量的燃料，则需要较高的CAPEX和OPEX。这样，在炼油厂中对生物质来源的原料进行共处理可能是一个很好的解决方案，并且可以为将生物燃料引入市场铺平道路，因为它减少了化石燃料对环境的影响，降低了国家对石油的依赖，并且，最重要的一项，是利用现有设施来避免建立新工厂。在这项工作中，在FCC装置中模拟并实施了加氢脱氧热解油（FIDC：1-油，来自木质纤维素生物质）与真空瓦斯油（VGO）的共处理，并在Aspen Plus内部的MS Excel中的计算模块中进行了实现。定义了40个假组分和10个实际组分来代表原料及其可能的裂化产物。这些成分用于从概率反应系统开发的超过12,000个单反应的假反应机理中。通过考虑用于估计每个反应速率常数的关键参数来处理如此大量的反应，并沿立管进行积分（使用有限体积方法进行建模）。调整参数用于根据进料和提升管条件拟合模型，并且必须使用实验数据进行估算。因此，动力学反应器模型允许在不同的原料和条件下工作。在模拟的立管反应器的所有体积元素中进行材料，热量和流体动力平衡，从而导致沿立管的成分和温度分布。该模型已通过实验数据验证，显示出较低的相对误差。因此，根据不同的原料和实验条件，该模型可用于预测产品收率。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2017年第may15期|362-370|共9页
  • 作者

    Cruz Pedro L.; Montero Esperanza; Dufour Javier;

  • 作者单位

    Inst IMDEA Energia, Syst Anal Unit, Avda Ramon de la Sagra 3, Mostoles 28935, Spain|Rey Juan Carlos Univ, Chem & Environm Engn Grp, Mostoles 28933, Spain;

    Inst IMDEA Energia, Syst Anal Unit, Avda Ramon de la Sagra 3, Mostoles 28935, Spain;

    Inst IMDEA Energia, Syst Anal Unit, Avda Ramon de la Sagra 3, Mostoles 28935, Spain|Rey Juan Carlos Univ, Chem & Environm Engn Grp, Mostoles 28933, Spain;

  • 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

    Co-processing; FCC; Bio-oil; Reactor model;

    机译：协同处理;FCC;生物油;反应器模型;

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