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首页> 外文期刊>Energy & fuels >Solid Catalyst Alkylation of C_2-C_3 Olefins with Isobutane in the Presence of Hydrogen Using a Slurry Transport Reactor-Hydrocyclone-Regenerator System and PtSO_4TiZr/SiO_2 Catalyst: Part 1. Alkylation in Continuous Pilot Plant Operation and Simulation of a Slurry Transport Reactor-Hydrocyclone Settler System
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Solid Catalyst Alkylation of C_2-C_3 Olefins with Isobutane in the Presence of Hydrogen Using a Slurry Transport Reactor-Hydrocyclone-Regenerator System and PtSO_4TiZr/SiO_2 Catalyst: Part 1. Alkylation in Continuous Pilot Plant Operation and Simulation of a Slurry Transport Reactor-Hydrocyclone Settler System

机译：使用淤浆输送反应器-水力旋流器-再生器系统和PtSO_4TiZr / SiO_2催化剂在氢气存在下用异丁烷将C_2-C_3烯烃固体催化剂烷基化：第1部分。连续中试工厂中的烷基化和淤浆输送反应器-水力旋流沉降器的模拟系统

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摘要

A continuous alkylation plant was simulated to evaluate the capability of a newly designed acid solid catalyst PtSO4TiZr/SiO2 to convert light olefins (C-2= and C-3=) and isobutane into alkylate in the presence of hydrogen. This part of the process consists in a three-phase slurry transport reactor (STR) and a hydrocyclone settler (HCS) operating in series with the recycling of unconverted reactant and regenerated and fresh catalysts. Data for alkylation were obtained in batch reactor and in pilot plant tests at different gas flow rates, temperatures, pressures, and catalyst particle sizes. Kinetic and deactivation rates and fluid dynamic data were obtained using the pilot plant continuous operation. Fresh, spent, and regenerated catalyst were characterized using different techniques to explain its selectivity and deactivation. Commercial size plant was designed and then simulated to determine the impacts STR operating variables in the alkylate cost. The study determined the kinetic and deactivation rates parameter for the main reactions as well as the effect of operating variables and particle size in the performance of the catalysts. Simulation provides information with which to discuss the behavior of STR reactor and the impacts of the operating variables in the cost of alkylate. The rates of apparent in-series alkylate production depend on order 1 in intermediates and olefin concentration, catalyst activity, and rate of diffusion in mesopores; the rates of soluble coke production depend on order 1 in intermediaries and 1.5 in olefin concentration and is inversely proportional to hydrogen partial pressure. The kinetic and deactivation model is independent of the reactor used. Catalyst aged with the number of cycles of alkylation and regeneration; its activity is inversely proportional to the soluble coke content. Inlet temperature, olefins-to-isobutene mole ratio, hydrogen-to olefins mole ratio, and catalyst makeup are the main operational variables that impact the cost of alkylate. Sensitivity to kinetic rate parameters, fluid dynamic model, and particle size are analyzed. There is an optimal coke build-up in solid alkylation that minimizes the alkylate cost.
机译：模拟了连续烷基化装置，以评估新设计的酸性固体催化剂PtSO4TiZr / SiO2在氢存在下将轻质烯烃（C-2 =和C-3 =）和异丁烷转化为烷基化物的能力。该过程的这一部分包括一个三相淤浆输送反应器（STR）和一个水力旋流器沉降器（HCS），它们与未转化的反应物以及再生的和新鲜的催化剂的循环操作串联运行。在不同的气体流速，温度，压力和催化剂粒径下，在间歇反应器和中试装置测试中获得烷基化数据。使用中试工厂的连续操作获得动力学和失活速率以及流体动力学数据。使用不同的技术对新鲜的，用过的和再生的催化剂进行表征，以解释其选择性和失活。设计商业规模的工厂，然后进行仿真，以确定STR操作变量对烷基化物成本的影响。该研究确定了主要反应的动力学和失活速率参数，以及操作变量和粒径对催化剂性能的影响。仿真为讨论STR反应器的行为以及操作变量对烷基化物成本的影响提供了信息。表观串联烷基化物的产生速率取决于中间体的顺序1和烯烃浓度，催化剂活性以及在中孔中的扩散速率。可溶性焦炭的产生速率取决于中间产物的1级和烯烃浓度的1.5级，并且与氢分压成反比。动力学和失活模型与所用反应器无关。催化剂老化与烷基化和再生的循环次数有关；其活性与可溶性焦炭含量成反比。入口温度，烯烃与异丁烯的摩尔比，氢与烯烃的摩尔比以及催化剂组成是影响烷基化物成本的主要操作变量。分析了对动力学速率参数，流体动力学模型和粒径的敏感性。固态烷基化过程中存在最佳的焦炭堆积，可最大程度地降低烷基化物成本。

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  • 来源
    《Energy & fuels》 |2018年第2期|2527-2548|共22页
  • 作者

    Galiasso Tailleur Roberto; Rodriguez Sergio; Farina Carlos; Derjani-Bayeh Sylvana;

  • 作者单位

    Univ Simon Bolivar, Grp TADiP, Dept Termodinam & Fenomenos Transferenci, AP 89000, Caracas 1080, Venezuela;

    Univ Simon Bolivar, Grp TADiP, Dept Termodinam & Fenomenos Transferenci, AP 89000, Caracas 1080, Venezuela;

    HyPro Consultant, 4250 Corrine Dr,200, Orlando, FL 32814 USA;

    Univ Simon Bolivar, Grp TADiP, Dept Termodinam & Fenomenos Transferenci, AP 89000, Caracas 1080, Venezuela;

  • 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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