The Experts below are selected from a list of 51 Experts worldwide ranked by ideXlab platform
Behnam Khoshandam - One of the best experts on this subject based on the ideXlab platform.
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Simulation and comparison of Sulfinol solvent performance with Amine solvents in removing sulfur compounds and acid Gases from natural sour Gas
Journal of Natural Gas Science and Engineering, 2015Co-Authors: Hassan Ghanbarabadi, Behnam KhoshandamAbstract:Natural Gas issued from well production has to be treated to remove acid Gases (CO2 and H2S) and sulfur compounds so that it meets transport requirements and Sale Gas specifications. Two great families of solvents are used for this kind of Gas treatment: chemical and physical solvents. Ilam Gas refinery (one of the main Gas refineries in Iran) discharges high levels of mercaptans in the production of raw LPG and condensates, and also there are problems with sulfur compounds because of the lack of Merox unit. In this research, we carry out the simulation and study of removing acid Gases (CO2, H2S) and sulfur compounds (methyl and ethyl mercaptans, dimethyl-sulfide, COS) with mixed solvent Sulfinol (Sulfolane+MDEA+H2O) and DGA, MDEA+AMP solvents and compare it with the present solvent MDEA. The purpose of this research is the feasibility study of utilizing Sulfinol-M solvent to replace the aqueous amine solvent in the Gas sweetening unit of Ilam Gas refinery. The results of the simulation show that more than 30-40% of mercaptans along with sour Gas is absorbed with Sulfinol-M solvent of lower flow rate and a considerable 10-25% less energy is required for solvent regeneration; furthermore, very little waste of solvent is observed compared with amine solvents (MDEA+AMP, DGA, MDEA). Many of the process parameters are controlled more easily than amine solvents with the characteristic of the composition of Sulfinol-M compound and there will be energy and economic saving in different sections of mercaptan and acid Gas absorption.
Hassan Ghanbarabadi - One of the best experts on this subject based on the ideXlab platform.
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Simulation and comparison of Sulfinol solvent performance with Amine solvents in removing sulfur compounds and acid Gases from natural sour Gas
Journal of Natural Gas Science and Engineering, 2015Co-Authors: Hassan Ghanbarabadi, Behnam KhoshandamAbstract:Natural Gas issued from well production has to be treated to remove acid Gases (CO2 and H2S) and sulfur compounds so that it meets transport requirements and Sale Gas specifications. Two great families of solvents are used for this kind of Gas treatment: chemical and physical solvents. Ilam Gas refinery (one of the main Gas refineries in Iran) discharges high levels of mercaptans in the production of raw LPG and condensates, and also there are problems with sulfur compounds because of the lack of Merox unit. In this research, we carry out the simulation and study of removing acid Gases (CO2, H2S) and sulfur compounds (methyl and ethyl mercaptans, dimethyl-sulfide, COS) with mixed solvent Sulfinol (Sulfolane+MDEA+H2O) and DGA, MDEA+AMP solvents and compare it with the present solvent MDEA. The purpose of this research is the feasibility study of utilizing Sulfinol-M solvent to replace the aqueous amine solvent in the Gas sweetening unit of Ilam Gas refinery. The results of the simulation show that more than 30-40% of mercaptans along with sour Gas is absorbed with Sulfinol-M solvent of lower flow rate and a considerable 10-25% less energy is required for solvent regeneration; furthermore, very little waste of solvent is observed compared with amine solvents (MDEA+AMP, DGA, MDEA). Many of the process parameters are controlled more easily than amine solvents with the characteristic of the composition of Sulfinol-M compound and there will be energy and economic saving in different sections of mercaptan and acid Gas absorption.
Heydar Maddah - One of the best experts on this subject based on the ideXlab platform.
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Investigation of various feed conditions on NGL recovery plant energy and exergy performance: A case study
Journal of Natural Gas Science and Engineering, 2015Co-Authors: Shahram Tahmasebi, Arash Bavand Abbasabadi, Nahid Ghasemi, Hamedreza Javadian, Somaye Mashhadi, Mehdi Fattahi, Yaser Rostami Arian, Heydar MaddahAbstract:Abstract NGL recovery from natural Gas is an important process in Gas refineries to achieve objectives including: the elimination of heavy hydrocarbons to reach the standard specification of Sale Gas when the possibility of condensation in pipelines is high and afterwards the possibility of selling it in the market. The high heating value of Gas condensates causes the attention of Gas companies to this precious resource. The existence of light and volatile particles in Gas condensates and stabilization process requirement are the greatest challenges of using this resource on refineries. Therefore, this paper deals with energy and exergy performance of NGL recovery plant in Sirri Island taking various typical feed compositions classified as lean and rich. A commercial simulator was used to obtain thermodynamic properties of the process streams and to perform mass and energy balances. Due to changes in the composition entering to de-methanization unit, in this article, simulation and exergy analysis was investigated simultaneously for the five feeds with different percentages of composition. The equations of exergy destruction and exergy efficiency for the main system components such as heat exchangers, compressors and expander were developed and utilized for evaluating system performance. Simulation results and the exergy evaluation showed that with increasing compounds heavier than methane in de-methanizer feed, the efficiency of exchanger and compression work will be reduced. Approximately 60% of the exergy efficiency was for the feed containing 86.68% mol methane while for the feed containing 65.21% mol methane, exergy efficiency was reduced to 50%. Consequently, the highest exergy destruction and exergy efficiency were belonging to the cold heat exchanger and the re-compressor, respectively.
Nuramalina Munirah Rosli - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of effectiveness parameters on Gas dehydration plant
2013Co-Authors: Nuramalina Munirah RosliAbstract:Natural Gas in either from natural production or storage reservoirs contain water,which condensed and form solid Gas hydrates that can cause trouble to the pipeline,increases the operating pressure and potential damage to the equipment.Thus dehydration of natural Gas is important to ensure smooth operation of Gas transmission line.This study focused on the dehydration by the absorption of liquid desiccant.The purpose of this study was to evaluate the effectiveness parameters used in Triethylene Glycol unit. Water need to be removed from the Natural Gas to meet a water dew point requirement of Sale Gas contract specification range from 32.8 to 117 kg/ 106 standard m3. The evaluation of effectiveness parameters on Gas dehydration plant used Aspen HYSYS.Peng-Robinson Equation of State has been chosen because the process involved hydrocarbon and water.The simulation was carried out to identify the effect of the parameter of column operating pressure, Gas flow rate, inlet Gas temperature and number of theoretical stages of the absorber.The optimum conditions of Gas dehydration was at 7000 kPa with 100 mmscfd Gas flow rate at 30 oC and 8 column theoretical stages
Winnie Lo ,chen Sing - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of effectiveness parameters on Gas dehydration plant
2012Co-Authors: Winnie Lo ,chen SingAbstract:Dehydration of Natural Gas to controlled water content is necessary in order to avoid Gas hydrates and minimize corrosion.This study describes the dehydration on liquid desiccant dehydration unit.The key task was to identify the optimum parameters used in Triethylene Glycol dehydration unit.Absorption dehydration involves the use of Triethylene Glycol to remove water vapor from the Gas stream.Water was removed to meet a water dew point requirement of Sale Gas contract specification range from 32.8 to 117 kg/106 standard m3.The evaluation of effectiveness parameters on Gas dehydration plant was carried out by using ASPEN HYSYS simulation.ASPEN HYSYS was used for steady state simulation, design, performance monitoring and optimization of oil and Gas production,Gas processing and petroleum refining industries.Peng-Robinson equation of state was chosen in the system.The simulation was carried out to determine the effect of important parameters such as column operating pressure, number of theoretical stages of column and Gas flow rate.A technically optimized dehydration process has been proposed based on the simulated data.Results showed that, when the Gas flow rate increases, the water absorption rate will decrease. Same condition obtained as increasing pressure.However,water absorption rate increases with the increasing number of theoretical stages.The optimum condition of Gas dehydration was at 2000kPa with 1000m3/h Gas flow rate and 4 column theoretical stages
