Simulation based improvement techniques for acid gases sweetening by chemical absorption: A review. (June 2015)

• Record Type: Journal Article
• Authors: Muhammad, Ayyaz; GadelHak, Yasser
• Is Part Of: International journal of greenhouse gas control. Volume 37(2015:Jun.)
• Page Start: 481
• Page End: 491
• Publication Date: 2015-06
• Subjects: Natural gas sweetening -- Alkanolamines -- Absorption -- Acid gases -- Simulation techniques; VLE vapor–liquid equilibrium -- FEED front-end-engineering design -- CO2 carbon dioxide -- H2S hydrogen sulphide -- NH3 ammonia -- MEA monoethanolamine -- DEA diethanolamine -- TEA triethanolamine -- MDEA methyldiethanolamine -- PZ piperazine -- QSAR quantitative structure–activity relationships -- CFD computational fluid dynamics -- AMP amino-methyl propoanol -- HETP height equivalent to theoretical plates -- SVM support vector machine -- COSMO-RS conductor like screening model for real solvents -- OPLS optimized potentials for liquid simulations -- DFT density function theory; Greenhouse gases -- Environmental aspects -- Periodicals; Air -- Purification -- Technological innovations -- Periodicals; Gaz à effet de serre -- Périodiques; Gaz à effet de serre -- Réduction -- Périodiques; Air -- Purification -- Technological innovations; Greenhouse gases -- Environmental aspects; Periodicals; 363.73874605
• DOI: 10.1016/j.ijggc.2015.03.014
• Languages: English
• ISSNs: 1750-5836

Abstract

Highlights: Simulation studies of natural gas sweetening by chemical absorption. Thermodynamic and kinetic principles of process simulation research. Critical analysis of models acid gases equilibrium in alkanolamines. Computational chemistry studies to improve amine based solvents. Efforts to improve the sweetening unit by simulation softwares. Abstract: There are various theoretical approaches to design, improve and optimize CO2 capture from natural gas sweetening units through chemical absorption. The aim objective of the present review is to explore various theoretical approaches developed by process and research engineers to improve the design and operation of chemical absorption sweetening units. Therefore, this review is divided into four parts. The first part discusses the basic thermodynamic and kinetic principles that represent the main core of any process simulation research. The second part is devoted to designing and improving the main columns i.e., the absorber and the stripper. The third part reviews previous research aiming at designing or optimizing the whole sweetening unit. The last part briefly discusses computational chemistry techniques used by chemists and chemical engineers to design novel solvents at the molecular level. The review ends with conclusions and a brief discussion about future perspectives to improve the process and areas that require further research effort.