Study on naphtha catalytic reforming reactor simulation and analysis

School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang 111003, China.
Journal of Zhejiang University SCIENCE B (Impact Factor: 1.28). 07/2005; 6(6):590-6. DOI: 10.1631/jzus.2005.B0590
Source: PubMed


A naphtha catalytic reforming unit with four reactors in series is analyzed. A physical model is proposed to describe the catalytic reforming radial flow reactor. Kinetics and thermodynamics equations are selected to describe the naphtha catalytic reforming reactions characteristics based on idealizing the complex naphtha mixture by representing the paraffin, naphthene, and aromatic groups by single compounds. The simulation results based above models agree very well with actual operation unit data.

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    • "In this regard, various types of reactor with different mode of operation have been suggested. Liang et al. [1] modeled four radial-flow tubular reactors in series in semi-regenerative (SR) mode of operation. Iranshahi et al. [2] assessed the effect of membrane addition to a radialflow tubular reactor. "
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    ABSTRACT: Advancements in the catalytic naphtha reforming process, as one of the main processes in petrochemical industry, contributed to development of continuous catalytic regenerative naphtha reformer units. Increasing the yield of aromatic and hydrogen as well as saving the energy in this process through the application of thermal coupling technique is a potentially interesting idea. This novel idea has been assessed in this paper. In the proposed configuration, continuous catalyst regeneration naphtha reforming process is coupled with hydrogenation of nitrobenzene in a two co-axial reactor separated by a solid wall, where the generated heat in nitrobenzene hydrogenation reaction transfers to naphtha reforming reaction medium through the surface of the tube. A steady-state, homogeneous, twodimensional model is used to describe the performance of this configuration and a kinetic model including 32 pseudo-components with 84 reactions is considered for naphtha reforming reaction. After validating the model with the commercial data of a domestic plant, the obtained results of coupled reactor are compared by the conventional one. The obtained results show the superiority of CCR coupled reactor against the conventional one. Copyright © 2013, Hydrogen Energy Publications, LLC.
    Full-text · Article · Aug 2013 · International Journal of Hydrogen Energy
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    • "Catalytic naphtha reforming is an important process for producing high octane gasoline, aromatic feedstock, and hydrogen in the petroleum refining and petrochemical industries (Hu et al., 2002). The catalytic naphtha reforming unit uses naphtha as feedstock to produce a high octane value liquid with main byproducts of hydrogen (H2) and liquefied petroleum gas (LPG) (Liang et al., 2005). To design new plants and to optimize existing ones, an appropriate mathematical model for simulating the industrial catalytic reforming process is needed (Weifeng et al., 2006). "
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    ABSTRACT: In this research, a layered-recurrent artificial neural network (ANN) using the back-propagation method was developed for simulation of a fixed-bed industrial catalytic reforming unit called Platformer. Ninety-seven datapoints were gathered from the industrial catalytic naphtha reforming plant during the complete life cycle of the catalytic bed (about 919 days). Ultimately, 80% of them were selected as past horizontal data sets, and the others were selected as future horizontal ones. After training, testing, and validating the model with past horizontal data, the developed network was applied to predict the volume flow rate and research octane number (RON) of the future horizontal data versus days on stream. Results show that the developed ANN was capable of predicting the volume flow rate and RON of the gasoline for the future horizontal data sets with AAD% (average absolute deviation) of 0.238% and 0.813%, respectively. Moreover, the AAD% of the predicted octane barrel levels against the actual values was 1.447%, which shows the excellent capability of the model to simulate the behavior of the target catalytic reforming plant.
    Full-text · Article · Jan 2013
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    • "Iranshahi et al. (2010b) and Rahimpour et al. (2010) investigated the application of the spherical radial flow reactors in naphtha reforming process in order to reduce the pressure drop through the reactors. Other reactor configurations, such as tubular radial flow reactors and fluidised bed reactors, have been introduced to solve different issues in industrial plants and to improve the quality of the products (Liang et al., 2005; Kolesnikov et al., 2008; Rahimpour, 2009; Stijepovic et al., 2010). "
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    ABSTRACT: In this study, the operating conditions of an axial flow spherical reactor have been optimised using a reliable optimisation technique and the results are compared with the results of non-optimised conditions. The dynamic behaviour of the reactor has been considered in the optimisation process and orthogonal collocation method has been used in order to solve the obtained equations from mathematical modelling of the process. The goal of this study is to maximise the aromatics and hydrogen production rate. Therefore, the objective function is the combination of two terms which include the production rate of the mentioned components. The catalyst distribution for each reactor, the inlet pressure of the system, Length per radius for each reactor, the naphtha feed molar flow rate and the hydrogen mole fraction in the recycle stream as well as the inlet temperature of each reactor have been optimised in this study. © 2011 Canadian Society for Chemical Engineering
    Full-text · Article · Oct 2012 · The Canadian Journal of Chemical Engineering
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