Article

A 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: 1.29). 07/2005; 6(6):590-6. DOI: 10.1631/jzus.2005.B0590
Source: PubMed

ABSTRACT 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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    ABSTRACT: Catalytic reforming of naphtha is one of the most important processes in refineries in which gasoline with highoctane number and aromatics such as benzene, toluene and xylene are produced. Simulation is normally used foroptimization and prediction of operating parameters such as octane number, LHSV, input temperature to reactorsand yield. In this paper, at first semi-regenerative catalytic reforming process of Tehran refinery was simulated byHysys-Refinery Simulator. After validating the simulation, on the basis of experiments prepared by Design expertsoftware, effect of catalyst distribution on the octane number of produced gasoline was studied whilst all otheroperating parameters were held constant. From the results, the best catalyst distribution in the reactors has beenobtained.The simulation result demonstrate that in the period of four months of plant data studied, the proposed distributioncan increase the octane number and octane barrel values to 0,8 and 0,2 percent respectively whilst the total massof the catalyst and operating conditions were keep constant.
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    ABSTRACT: One of the most important and critical processes in petroleum refineries is catalytic reforming in which highoctane gasoline and valuable aromatics such as Benzene, Toluene and Xylene (B.T.X.) are produced. In viewof the importance of this process for producing gasoline, simulation of catalytic reforming process andprediction of vital parameters such as octane number, Liquid Hour Space Velocity (LHSV), reactor inlettemperatures, yield and catalyst life aiming at process optimization is of prime importance. In this work, theoldest kinetic model mentioned for this unit is reconsidered. The accuracy of the model is compared with thecollected data from Tehran refinery and results of Petro-Sim simulator, one of the newest for simulation ofpetroleum refinery processes. The results show that this model has relatively acceptable ability to predictoctane number, outlet temperature of reactors and yield.

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