Volume 7, Issue 4 (2023)
IQBQ 2023, 7(4): 95-107 |
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Esmaeili-Faraj S H, Arjomand A. Process Design and Economic Analysis of Power Generation from Flare Gases of South Pars Gas Refinery (phase 22-24). IQBQ 2023; 7 (4) :95-107
URL: http://arcpe.modares.ac.ir/article-38-68339-en.html
URL: http://arcpe.modares.ac.ir/article-38-68339-en.html
1- Department of Chemical Engineering, Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran , h.esmaeili@shahroodut.ac.ir
2- Department of Chemical Engineering, Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran
2- Department of Chemical Engineering, Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran
Abstract: (25 Views)
Research subject: Millions of dollars of non-renewable capital are burned in flares every year, in the oil and gas industries, which in addition to polluting the air has no income for the industry. In Iran and South Pars region, due to the presence of gas refineries, a considerable amount of gas is burned in the flares. In this research, as a comprehensive study, the technical and economic investigation of the recovery of flare gases has been discussed.
Research approach: For this purpose, Aspen Plus software was used to simulate the desired unit in the set of flares of South Pars refinery phases 22-24. The simulation consists of two recovery parts: the flare gases recovery by use of a liquid ring compressor and power generation by the heat from the combustion of the flare gases through the application of the reheat steam Rankine cycle. The profitability of the project includes naphtha cuts and liquefied gas recovered from gases sent to the flare on one hand and power generation in turbines on the other hand.
Main results: The effect of the amount of air entering the combustion chamber on the temperature of the exhaust gas was investigated. The amount of air entering the combustion chamber was determined to be 2685 tons per hour in order to obtain supercritical water vapor with a temperature of about 650 ºC and a pressure of 26 kPa in the Rankine cycle. Using the simulation results, the temperature diagram was drawn in terms of entropy, and in addition to the steam phase diagram during the cycle, the steam Rankine cycle diagram was also drawn. The results of this research showed that the designed process will produce 5365 kg/h of naphtha, 179.45 kg/h of LPG, 25903 kW, and 101124 kW power in two separate turbines, and an annual sales income of 24,782,194 $. In addition, it was shown that the investment return period of this process is equal to 2.5 months.
Research approach: For this purpose, Aspen Plus software was used to simulate the desired unit in the set of flares of South Pars refinery phases 22-24. The simulation consists of two recovery parts: the flare gases recovery by use of a liquid ring compressor and power generation by the heat from the combustion of the flare gases through the application of the reheat steam Rankine cycle. The profitability of the project includes naphtha cuts and liquefied gas recovered from gases sent to the flare on one hand and power generation in turbines on the other hand.
Main results: The effect of the amount of air entering the combustion chamber on the temperature of the exhaust gas was investigated. The amount of air entering the combustion chamber was determined to be 2685 tons per hour in order to obtain supercritical water vapor with a temperature of about 650 ºC and a pressure of 26 kPa in the Rankine cycle. Using the simulation results, the temperature diagram was drawn in terms of entropy, and in addition to the steam phase diagram during the cycle, the steam Rankine cycle diagram was also drawn. The results of this research showed that the designed process will produce 5365 kg/h of naphtha, 179.45 kg/h of LPG, 25903 kW, and 101124 kW power in two separate turbines, and an annual sales income of 24,782,194 $. In addition, it was shown that the investment return period of this process is equal to 2.5 months.
Article Type: Original Research |
Subject:
Energy Storage
Received: 2023/04/5 | Accepted: 2023/07/22 | Published: 2023/12/22
Received: 2023/04/5 | Accepted: 2023/07/22 | Published: 2023/12/22
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