Optimal Temperature Control of a Propane Thermal Cracking Reactor

Shahrokhi, Mohammad; Nejati, Ali

doi:10.1021/ie0106783

Cited by 31 publications

(35 citation statements)

References 8 publications

(8 reference statements)

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“…[7] Shahrokhi and Nejati carried out an optimal operation study based on one-dimensional (1D) plug flow steadystate model for propane thermal cracking. [8] Operating profit was used as objective function, and the optimal temperature profile was obtained. In formulating the above objective function, the time required for decoking was considered and the cost for decoking operations was expressed as a fraction of the production revenue.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimal operation of tubular reactors for naphtha cracking by numerical simulation

Gao

Wang

Ramshaw

et al. 2009

Asia-Pacific J Chem Eng

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Process gas temperature profile and steam-to-hydrocarbon ratio in the feed have important impact on product yields and coking rate in tubular reactors for naphtha cracking. This study is to evaluate these effects quantitatively based on numerical simulation. Steady-state operation of the tubular reactor in an industrial thermal cracking furnace was first simulated in HYSYS with a molecular reaction scheme. Various case studies then investigate the influence of process gas temperature profile and inlet steam-to-hydrocarbon ratio so that the ethylene/propylene product yields and coking rate can be evaluated. Finally, steady-state optimization was applied to the operation of this industrial furnace. The optimal process temperature profile and the optimal inlet steam-to-naphtha ratio were found to maximize the operation profit. This study will provide significant guidance to process engineers in the ethylene industry. 

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Section: Literature Reviewmentioning

confidence: 99%

Optimal operation of tubular reactors for naphtha cracking by numerical simulation

Gao

Wang

Ramshaw

et al. 2009

Asia-Pacific J Chem Eng

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“…One-dimensional (1D) steady state and dynamics models were developed by Shahrokhi and Nejati for propane thermal cracking [9]. They investigated the optimal process of gas temperature profile based on the kinetic model of Sundaram and Froment [5], by considering both the ethylene and propylene production.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Coke Formation and Deposition due to Thermal Cracking of Petroleum Fluids

2016

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A two-dimensional mathematical dynamics model is presented to predict coke formation due to thermal cracking inside the tubes of fired heaters on two types of petroleum fluid. The laminar and turbulent flows are analyzed for both petroleum fluids. The second-order k-e standard model is adopted to make this mathematical model more accurate than previous models of coke formation. The radial and axial variations for temperature, velocity, and concentration due to the high temperature gradients inside the tubes are considered in the model equations. The finite volume method is the numerical model used to discretize the conservation equations. The proposed model is suitable to predict coke formation inside heater tubes since it indicates operational conditions where coke formation is minimized.

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“…Apparently, the approach to obtain an optimum cell structure by setting up an experimental system is very costly and impracticable. Then, the mathematical modelling tool is the best choice to study the reactors . In the last decade, with the developments of computer, numerical simulation was applied for designing an aluminum reduction cell.…”

Section: Introductionmentioning

confidence: 99%

Analysis for effects of electrolyte level on energy consumption in magnesium electrolysis by finite element method

et al. 2016

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In the process of magnesium electrolysis, increasing the level of electrolyte can reduce the cell voltage and energy consumption in an electrolysis magnesium cell. In this paper, a three‐dimensional model of a full cell was implemented to study the relationship between the cell voltage and electrolyte level in a magnesium electrolysis cell. Firstly, the resistance voltage of difference current intensity in magnesium electrolysis cells were discussed with the electrolyte depth from 1.25 to 1.45 m. Moreover, the size of anodes and positions of anodes and cathodes were changed to investigate the trend of resistance voltage in the cell. The energy consumption in each part of the electrolyte was integrated to further understand the energy distribution in the electrolyte to explore which part of the electrolyte has the greatest contribution to the cell voltage. Through analyzing components of the cell voltage, energy distribution, and thermal balance, the explanation of the relationship between electrolyte level and energy consumption can be obtained.

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Optimal Temperature Control of a Propane Thermal Cracking Reactor

Cited by 31 publications

References 8 publications

Optimal operation of tubular reactors for naphtha cracking by numerical simulation

Optimal operation of tubular reactors for naphtha cracking by numerical simulation

Mathematical Modeling of Coke Formation and Deposition due to Thermal Cracking of Petroleum Fluids

Analysis for effects of electrolyte level on energy consumption in magnesium electrolysis by finite element method

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