Simulation and parametric analysis of natural gas sweetening process: a case study of Missan Oil Field in Iraq

Abstract

Gas sweetening is one of the important purification processes which is employed to remove acidic contaminants from natural gases prior to meet transport requirements and sale gas specifications. In this work, simulation and parametric studies of the natural gas processing plant of Missan Oil Company/Buzurgan Oil Field of Natural Gas Processing Plant (in Iraq) were considered. After simulation and validation of this plant, the effect of feed temperature and flow rate and solvent concentration were considered. Results show with increasing the feed temperature and flow rate, the amount of H2S and CO2 in the sweet gas stream increases. Then, in the next step, the effect of mixture solvents was studied. Sulfolane–MDEA and MDEA–MEA were selected as a physical–chemical mixture solvent and chemical mixture solvent, respectively. The simulation results show that the solvent price and reboiler duty and cooling duty can be reduced by using a mixture solvent. However, the amount of H2S and CO2 in the sweet gas can be affected by these solvents. The system by a chemical mixture solvent can better performance than other solvents.

Natural Gas Sweetening: Simulation for Carbon Dioxide Capture Using Tea Amine-Based Absorption

“…It is generally known that the reaction of the acid gases with solutions of the amine in the absorption tower is a balanced exothermic reactions (basically a forward reaction) and that absorption capacity is more appreciated at the lower temperature. This is similarly reported by (Khanjar and Amiri, 2021) during their Simulation and parametric analysis of natural gas sweetening process.…”

Methane and Hydrocarbon Emission Rates from Oil and Gas Production in the Province of Basra, South of Iraq

“…It shares international boundaries with the Arabian Gulf in the south, Kuwait in the southwest, and Iran in the east, as well as the provinces of Maysan and DhiQar in the north, Muthanna in the west. It occupies an area of 1973 km2, as depicted in figure (1) winters in Basra are cold and dry, and Summers are long and hot. The average annual temperature ranges from 7.2 °C to 46.6 °C, with recent years seeing temperatures above 50 °C [11].…”

“…In Basra, measurements were taken at six oil fields (Altuba, Allhais, Artawi, North Rumaila, Nahran omar, and Majnoon) and two power plants (Alnajebia power plant and Shatt AlBasra) fig. (1). All these stations are flaring gas.…”

“…The highest average concentrations of these gases were discovered during the fourth measurement, and they were 934.37, 560.62, 392.43, 336.37, and 261.62 ppm, figure (3) A, B, C, D,E) respectively. During all these measurements, the dominated stability class D table (1). Because the atmosphere is mainly neutral, it does not assist or oppose the vertical motion which means the pollutants do not mitigate.…”

“…Natural gas is regarded as one of the most efficient fuels. It is one of the non-renewable energy sources whose quantities diminish over time due to their widespread use [1]. The main Composition of natural gas is methane, Over one-third of all methane emissions resulting from human activity are produced by fossil fuel operations.…”