Abstract

  In this research, a layered-recurrent artificial neural network (ANN) using back-propagation method was developed for simulation of a fixed-bed industrial catalytic-reforming unit, called Platformer. Ninety-seven data points were gathered from the industrial catalytic naphtha reforming plant during the complete life cycle of the catalyst (about 919 days). A total of 80% of data were selected as past horizontal data sets, and the others were selected as future horizontal ones. After training, testing and validating the model using 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 with the AAD% of 0.238 and 0.813%, respectively. Moreover, the AAD% of the predicted octane barrel against the actual values was 1.447%, confirming the excellent capability of the model to simulate the behavior of the under study catalytic reforming plant.   Key words: Modeling, simulation, artificial neural network, catalytic reforming, naphtha  cycle life.

Highlights

  • The need for transportation fuels, especially gasoline, will show a steady growth in the future, contributing to demand petroleum processes

  • The parity plots for the research octane number (RON) and gasoline flow rate simulated by the artificial neural network (ANN) models are presented in Figures 3 and 4

  • A recurrent layer neural network model was developed for the simulation of an industrial fixed-bed catalytic naphtha reformer

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Summary

Full Length Research Paper

A layered-recurrent artificial neural network (ANN) using back-propagation method was developed for simulation of a fixed-bed industrial catalytic-reforming unit, called Platformer. After training, testing and validating the model using 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 with the AAD% of 0.238 and 0.813%, respectively. The AAD% of the predicted octane barrel against the actual values was 1.447%, confirming the excellent capability of the model to simulate the behavior of the under study catalytic reforming plant

INTRODUCTION
Process description
Process variable
DEVELOPMENT OF ARTIFICIAL NEURAL NETWORK MODEL
Developing the neural network using past horizontal data
Predicting the future horizontal outputs
Variable RON of gasoline Flow rate of gasoline
Conclusions
Full Text
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