Liquid-vapor partitioning of NaCl(aq) from concentrated brines at temperatures to 350{degrees}C

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Compositions of coexisting liquid and vapor phases have been determined at temperatures from 250 to 350{degree}C for brines containing NaCl and either HCl or NaOH by direct sampling of both phases from a static phase-equilibration apparatus. Thermodynamic partitioning constants for NaCl have been determined from the observed compositions of the coexisting phases combined with the known activity coefficients of NaCl(aq) in the liquid phase. An apparent dependence of the values of these partitioning constants on brine concentration is explained by considering the effect of decreasing pressure on the density of the vapor phase. Concentrations of HCl and NaCl in steam ... continued below

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7 p.

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Simonson, J. M.; Palmer, D. A. & Carter, R. W. March 1, 1994.

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Compositions of coexisting liquid and vapor phases have been determined at temperatures from 250 to 350{degree}C for brines containing NaCl and either HCl or NaOH by direct sampling of both phases from a static phase-equilibration apparatus. Thermodynamic partitioning constants for NaCl have been determined from the observed compositions of the coexisting phases combined with the known activity coefficients of NaCl(aq) in the liquid phase. An apparent dependence of the values of these partitioning constants on brine concentration is explained by considering the effect of decreasing pressure on the density of the vapor phase. Concentrations of HCl and NaCl in steam produced from various natural brines may be calculated as functions of temperature and brine composition based on these new results coupled with our previous determinations of the partitioning constants for HCl(aq). Application of these results to The Geysers will be discussed in terms of the composition of postulated brines which could be in equilibrium with observed steam compositions at various temperatures.

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7 p.

Notes

OSTI as DE94007228; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • 19. workshop on geothermal reservoir engineering,Stanford, CA (United States),18-20 Jan 1994

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  • Other: DE94007228
  • Report No.: CONF-940120--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 10126322
  • Archival Resource Key: ark:/67531/metadc1280063

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  • March 1, 1994

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  • Oct. 12, 2018, 6:44 a.m.

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  • Nov. 14, 2018, 1:28 p.m.

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Simonson, J. M.; Palmer, D. A. & Carter, R. W. Liquid-vapor partitioning of NaCl(aq) from concentrated brines at temperatures to 350{degrees}C, article, March 1, 1994; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1280063/: accessed March 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.