Simulation and Optimization of Demercaptanization of Propane and Butane in South Pars Gas Refineries

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Esmaeili Faraj Seyyed Hamid; Bijani Abdolmotaleb; SAEI MOGHADDAM MOJTABA

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Journal: APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING Year:2019 | Volume:3 | Issue:2 Page(s): 3-14

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Title

Simulation and Optimization of Demercaptanization of Propane and Butane in South Pars Gas Refineries

Author(s)

Esmaeili Faraj Seyyed Hamid | Bijani Abdolmotaleb | SAEI MOGHADDAM MOJTABA | Issue Writer Certificate

Keywords

Simulation

Optimization

Demercaptanization

Petro-SIM software

LPG

Abstract

Research subject: Propane and butane that are the contents of LPG are separated from natural gas in the unit 107 of 5th refinery of South Pars Gas Company (SPGC) and then they are purified from mercaptans in units 114 and 115 respectively. The concentration of methyl mercaptan and ethyl mercaptan in the propane stream are 551 and 46ppm, respectively, and the concentration of these components in butane stream are 1218 ppm and %0. 8, respectively. In order to remove mercaptans from butane and propane, aqueous solution of sodium hydroxide with 15 to %20 wt. is used for the scrubbing. Research approach: In this research, using the Petro-SIM software, which is a particular simulator for oil and gas industries, the units, 113 114, and 115 of 5th refinery of SPGC are simulated. Main results: The results of the Simulation are compared with the data of both experimental data and design documents. The maximum error between DSO concentration of the Simulation results and design data was %7 and it is showed that they are goodly match. Then, using the software optimizer the operating parameters is optimized. The objective function for Optimization was the mole fraction of methyland ethyl-mercaptan in all of products. The minimization of objective function is the main goal of Optimization. The Optimization results show that by increasing the extraction temperature in the unit of 115 up to 46 ° C, the concentration of mercaptan in the products can be reduced. The other independent parameters do not affect the final result of the process.

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APA: Copy

Esmaeili Faraj, Seyyed Hamid, Bijani, Abdolmotaleb, & SAEI MOGHADDAM, MOJTABA. (2019). Simulation and Optimization of Demercaptanization of Propane and Butane in South Pars Gas Refineries. APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING, 3(2), 3-14. SID. https://sid.ir/paper/267787/en

Vancouver: Copy

Esmaeili Faraj Seyyed Hamid, Bijani Abdolmotaleb, SAEI MOGHADDAM MOJTABA. Simulation and Optimization of Demercaptanization of Propane and Butane in South Pars Gas Refineries. APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING[Internet]. 2019;3(2):3-14. Available from: https://sid.ir/paper/267787/en

IEEE: Copy

Seyyed Hamid Esmaeili Faraj, Abdolmotaleb Bijani, and MOJTABA SAEI MOGHADDAM, “Simulation and Optimization of Demercaptanization of Propane and Butane in South Pars Gas Refineries,” APPLIED RESEARCH IN CHEMICAL POLYMER ENGINEERING, vol. 3, no. 2, pp. 3–14, 2019, [Online]. Available: https://sid.ir/paper/267787/en

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