Critical phenomena in a mixture of methane, carbon dioxide and hydrogen sulfide

Ng, Heng‐Joo; Robinson, Donald B.; Leu, Ah-Dong

doi:10.1016/0378-3812(85)87021-7

Cited by 51 publications

(33 citation statements)

References 5 publications

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“…6 Ohgaki and Katayama (45) -33 to -3 1.5 to 3.6 Brown et al (46) -33 to -3 0.3 to 3.3 Wei et al (39) C 3 H 8 17 to 93 up to 7 Poettmann and Katz (47) 4 to 71 up to 7 Reamer et al (48) -40 to 0 0.1 to 3.5 Akers et al (49) 32 to 88 5 to 7 Roof and Baron (50) -critical -20 to 0 0.2 to 3.5 Nagahama et al (43) -29 and -7 0.5 to 2. 6 Hamam and Lu (51) + CH 4 was performed by Ng et al (6) Although much of this study was at temperatures below those of interest in acid gas injection, they provide data useful for testing phase behaviour prediction models. The multiphase equilibrium they observed for this mixture, including multiple critical points for a mixture of fixed composition, should be of interest to all engineers working with such mixtures.…”

Section: Hydrogen Sulfide + Hydrocarbonsmentioning

confidence: 97%

“…-87 to -53 2.7 to 6.9 Neumann and Walch (30) -20 to 15 2.6 to 8. 6 Arai et al (31) -120 to -54 1.2 to 6.4 Hwang et al (32) -43 to -23 0.9 to 8.5 Davalos et al (33) -3 3.2 to 8. 4 Somait and Kidnay (34) -120 to -54 0.6 to 4.7 Mraw et al (35) -54 to -3 0.6 to 8.5 Al-Sahhaf et al (36) 15 and 20 5.1 to 8.…”

Section: Hydrogen Sulfide + Hydrocarbonsmentioning

confidence: 98%

“…As a final case, Figure 4 shows the pressure-temperature diagram (phase envelope) for the mixture containing 40.23% H 2 S, 9.88% CO 2 , and 49.89% CH 4 , which is the mixture studied by Ng et al (6) The data points on the plot are their data.…”

Section: Calculationsmentioning

confidence: 99%

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Phase Equilibria Relevant to Acid Gas Injection, Part 1-Non-Aqueous Phase Behaviour

Carroll

2002

Journal of Canadian Petroleum Technology

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The design of an acid gas injection scheme requires a significant amount of information regarding phase equilibria. The purpose of this paper is to review the literature for the available experimental data, and survey methods for calculations of the non-aqueous equilibria. This study will be limited to the following components: hydrogen sulfide, carbon dioxide, methane, ethane, propane, and, to some extent, water. It is demonstrated that the widely available Peng-Robinson equation of state is adequate for predicting the non-aqueous phase equilibria in these mixtures. However, the design engineer should be cognizant of the capabilities of the model selected to perform the calculations. If uncertain, it is wise to verify the software package, and more importantly the chosen model, by comparing it with experimental data. Available data are compiled as a part of this paper. ACID GAS INJECTION Acid gas injection has become the environmentally friendly way to deal with the unwanted by-product of the sweetening of natural gas. In the future it may become a means of dealing with carbon dioxide from other sources as well. In a basic acid gas injection scheme, the acid gas off the amine regenerator tower is compressed and transported via pipeline to an injection well. From there, it is injected into a suitable formation for disposal. The formation is selected based on geological criteria such as the size of the disposal reservoir, and the containment of the injected acid gas. In an acid gas injection scheme, pressures can range from near atmospheric up to 30 MPa or more; the upper limit is dictated by the selected reservoir. The temperature can range from about 30 °C up to as much as 200 °C; again the upper limit is being the reservoir conditions. The design of the injection scheme requires a thorough knowledge of the phase equilibria encountered in wet acid gas mixtures. This paper reviews the experimental investigations into the relevant systems. This study is limited to the following components: hydrogen sulfide, carbon dioxide, methane, ethane, propane, and water. Even so, an interesting variety of phase equilibria will be presented. The design engineer is advised to be aware of all of the various phenomena encountered in mixtures of these components, as they will have a significant effect on the design. Experimental Investigations In this section, experimental investigations important to acid gas injection will be reviewed. Typically, in acid gas injection schemes, we are not concerned with hydrocarbons heavier than propane. So, for this study, only equilibrium between the acid gas components and methane, ethane, and propane will be considered. Hydrogen Sulfide +Carbon Dioxide The most important non-aqueous system involved in acid gas injection is the binary mixture hydrogen sulfide +carbon dioxide, since acid gas is composed almost exclusively of these components. Two early studies of the phase equilibrium in the system hydrogen sulfide +carbon dioxide were Bierlein and Kay(1) and Sobocinski and Kurata(2).

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Section: Hydrogen Sulfide + Hydrocarbonsmentioning

confidence: 97%

Section: Hydrogen Sulfide + Hydrocarbonsmentioning

confidence: 98%

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Phase Equilibria Relevant to Acid Gas Injection, Part 1-Non-Aqueous Phase Behaviour

Carroll

2002

Journal of Canadian Petroleum Technology

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“…Methane-CO 2 -ethane, methane-CO 2 -nitrogen, methane-CO 2 -H 2 S and H 2 S-n-exane-npentadecane systems are considered, according to experimental data available in literature [47,[61][62][63][64].…”

Section: Validation Of the Proposed K Ijmentioning

confidence: 99%

Prediction of vapor–liquid equilibrium for reservoir mixtures with cubic equations of state: Binary interaction parameters for acidic gases

Pellegrini

Moioli

Gamba

et al. 2012

Fluid Phase Equilibria

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“…Défontaines (1997) en mentionne trois (Robinson et Bailey, 1957 ;Robinson et al, 1959 ;Ng et al, 1985). Les deux autres études sont celles de Wilson et Peterson (1975) et de Hensel et Massoth (1964).…”

Section: Tableauunclassified

Propriétés thermodynamiques de systèmes contenant des gaz acides. Étude bibliographique

Hemptinne

Béhar

2000

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Des besoins de plus en plus importants se font sentir quant à la connaissance du comportement de mélanges contenant des gaz acides (CO 2 et H 2 S) avec des hydrocarbures et/ou de l'eau. Ces besoins sont actuellement bien identifiés dans le domaine de l'injection de gaz acides pour la production améliorée d'hydrocarbures et/ou pour se conformer aux contraintes environnementales (gisements poubelles). En particulier, la description du comportement des mélanges fluides (gaz injecté + hydrocarbures en place + aquifère) dans les conditions de l'injection est nécessaire à la mise au point du procédé. Par ailleurs, la propriété de ces gaz de former des solutions acides en milieu aqueux peut avoir des consé-quences importantes sur le choix des matériaux mis en oeuvre afin d'éviter les problèmes induits par la corrosion. Cet article présente l'état de l'art en ce qui concerne les propriétés thermodynamiques des systèmes eau-hydrocarbures-gaz acides. La première partie se concentre sur les données actuellement disponibles, aussi bien en ce qui concerne les équilibres de phases que les propriétés volumétriques. De nombreuses données binaires sont disponibles, dans des conditions de pression relativement modérées. Cependant, peu de mesures d'enveloppes de phases de systèmes réels ont été acquises, en particulier de mesures de point de rosée eau. Par ailleurs, bien qu'il soit connu que les systèmes avec CO 2 peuvent former des équilibres liquide-liquide à haute pression, ce phénomène n'a pas été recensé pour l'hydrogène sulfuré. Dans la seconde partie, nous présentons les modèles généralement utilisés pour décrire les équilibres de phases des systèmes susmentionnés. Nous en concluons que les systèmes anhydres peuvent être décrits correctement avec une équation d'état cubique. En présence d'eau, la complexité des phénomènes à prévoir augmente et il est nécessaire de coupler des modèles spécifiques pour les phases hydrocarbonées et aqueuse.Mots-clés : CO 2 , H 2 S, gaz acides, thermodynamique, propriétés, équilibres de phases, modèles.Abstract -Thermodynamic Properties of Acid Gas Containing Systems: Literature Review -The need for a description of the properties of mixtures containing acid gases with hydrocarbons and water is increasing. These needs are well identified in the field of acid gas injection, either for enhanced hydrocarbon recovery and/or for responding to environmental constraints. In particular, an improved knowledge of fluid mixtures (injected gas + hydrocarbons in place + aquifer) behaviour in the reservoir conditions is needed for the design of the process. In addition, the capability of these gases to form corrosive mixtures in aqueous solutions may have major consequences on the choice of the materials to be used.

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Critical phenomena in a mixture of methane, carbon dioxide and hydrogen sulfide

Cited by 51 publications

References 5 publications

Phase Equilibria Relevant to Acid Gas Injection, Part 1-Non-Aqueous Phase Behaviour

Phase Equilibria Relevant to Acid Gas Injection, Part 1-Non-Aqueous Phase Behaviour

Prediction of vapor–liquid equilibrium for reservoir mixtures with cubic equations of state: Binary interaction parameters for acidic gases

Propriétés thermodynamiques de systèmes contenant des gaz acides. Étude bibliographique

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