Establishment and solution of eight-lump kinetic model for FCC gasoline secondary reaction using particle swarm optimization

Chen, Chun; Yang, Bolun; Yuan, Jun; Wang, Zhiwen; Wang, Longyan

doi:10.1016/j.fuel.2007.01.007

Cited by 19 publications

(18 citation statements)

References 17 publications

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“…To confirm that the CFD results are independent of the grid size, simulations of the CP-Z flow configuration with mesh sizes of 25,22,20,18,16, and 14 mm are performed at the cold model conditions (see Table S10). Since static pressure is an important parameter in a reactor, its distributions along the annular channel are used to monitor numerical errors, as shown in Figure 3.…”

Section: Grid Independency and Model Verificationmentioning

confidence: 99%

Numerical evaluation and improvement efficiency of radial flow moving‐bed reactors for catalytic pyrolysis of light hydrocarbons to low carbon olefins

2015

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A three-dimensional (3D) reactor model based on the Eulerian-Eulerian approach was applied to describe the gas-solid flow and heat transfer performance in a radial flow moving bed reactor (RFMBR). A six-lumped kinetic model for the catalytic pyrolysis of C 4 hydrocarbon was employed. The heat transfer characteristics and species concentration profiles were investigated in the reactor under various reaction conditions. Effects of operation parameters and reactor structures on the reactor performance were also evaluated and optimized numerically. Simulation results show that there exists a good heat transfer performance between gas and solid phases in the catalyst bed. The temperature profiles and the species yield distributions are different with respect to bed height positions. Moreover, the results indicate that product yield is more sensitive to the reaction temperature than to the dilution rate and the reaction residence time. For the Z-type centripetal flow RFMBR, an annular tube with an inverted cone structure is helpful to improve the uniformity of flow distribution and increase low-carbon olefins yields.

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Section: Grid Independency and Model Verificationmentioning

confidence: 99%

Numerical evaluation and improvement efficiency of radial flow moving‐bed reactors for catalytic pyrolysis of light hydrocarbons to low carbon olefins

2015

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“…To reduce the complexity of the model, all hydrocarbon components in the system are refined into three hydrocarbon classes based on the lumping criteria discussed by Somer et al [17], Cheng et al [1], and Chen et al [18]. It is noted that each class represents a single compound.…”

Section: Model Of Hydrogenation Fixed Bed Reactorsmentioning

confidence: 99%

Modeling of an industrial fixed bed reactor based on lumped kinetic models for hydrogenation of pyrolysis gasoline

Authayanun

Pothong

Saebea

et al. 2008

Journal of Industrial and Engineering Chemistry

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“…When the feed to the fluid catalytic crackers is gas oil, which is a mixture of hydrocarbons, detailed kinetic models based on molecular processes become impossible. Lumped kinetic models are then developed (10,46,47). Ancheyta-Juárez et al (48) discuss a hierarchically embedded parameter estimation technique for such lumped models.…”

Section: Understanding and Modeling Intrinsic Reaction Rate Mechanismsmentioning

confidence: 99%

Computational Modeling of Multiphase Reactors

Joshi

Nandakumar²

2015

Annu. Rev. Chem. Biomol. Eng.

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Multiphase reactors are very common in chemical industry, and numerous review articles exist that are focused on types of reactors, such as bubble columns, trickle beds, fluid catalytic beds, etc. Currently, there is a high degree of empiricism in the design process of such reactors owing to the complexity of coupled flow and reaction mechanisms. Hence, we focus on synthesizing recent advances in computational and experimental techniques that will enable future designs of such reactors in a more rational manner by exploring a large design space with high-fidelity models (computational fluid dynamics and computational chemistry models) that are validated with high-fidelity measurements (tomography and other detailed spatial measurements) to provide a high degree of rigor. Understanding the spatial distributions of dispersed phases and their interaction during scale up are key challenges that were traditionally addressed through pilot scale experiments, but now can be addressed through advanced modeling.

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Establishment and solution of eight-lump kinetic model for FCC gasoline secondary reaction using particle swarm optimization

Cited by 19 publications

References 17 publications

Numerical evaluation and improvement efficiency of radial flow moving‐bed reactors for catalytic pyrolysis of light hydrocarbons to low carbon olefins

Numerical evaluation and improvement efficiency of radial flow moving‐bed reactors for catalytic pyrolysis of light hydrocarbons to low carbon olefins

Modeling of an industrial fixed bed reactor based on lumped kinetic models for hydrogenation of pyrolysis gasoline

Computational Modeling of Multiphase Reactors

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