Diffusion Coefficients for Hydrogen Sulfide, Carbon Dioxide, and Nitrous Oxide in Water over the Temperature Range 293-368 K

• Published in: Journal of chemical and engineering data Vol. 39; no. 2; pp. 330 - 332
• Main Authors: Tamimi, A, Rinker, Edward B, Sandall, Orville C
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.04.1994
• Subjects: 03 NATURAL GAS; 030300 - Natural Gas- Drilling, Production, & Processing; 09 BIOMASS FUELS; 090900 - Biomass Fuels- Processing- (1990-); 10 SYNTHETIC FUELS; 100200 - Synthetic Fuels- Production- (1990-); ALKANES; AQUEOUS SOLUTIONS; CARBON COMPOUNDS; CARBON DIOXIDE; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; Chemistry; DATA; DESULFURIZATION; DIFFUSION; DISPERSIONS; Exact sciences and technology; EXPERIMENTAL DATA; FLUIDS; FUEL GAS; FUELS; GAS FUELS; GASES; General and physical chemistry; HIGH BTU GAS; HYDROCARBONS; HYDROGEN COMPOUNDS; HYDROGEN SULFIDES; INFORMATION; METHANE; MIXTURES; NITROGEN COMPOUNDS; NITROGEN OXIDES; NITROUS OXIDE; NUMERICAL DATA; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; Solution properties; SOLUTIONS; SORPTIVE PROPERTIES; SULFIDES; SULFUR COMPOUNDS; SURFACE PROPERTIES; SYNTHETIC FUELS; Water; Hydrogen Sulfides; Carbon dioxide; Temperature effect; Diffusion coefficient; Experimental study; Nitrogen Oxides
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je00014a031

Acid gases such as H[sub 2]S and CO[sub 2] are generally removed from natural gas, biogas, synthetic natural gas, and other process gas streams by means of absorption into aqueous alkanolamine solutions. A key parameter needed to model this diffusion with chemical reaction process in the liquid phase is the diffusion coefficient. A wetted-sphere absorption apparatus was used to measure the liquid-phase diffusion coefficients for hydrogen sulfide, carbon dioxide, and nitrous oxide over the temperature range 293--368 K. The experimental results obtained in this work are compared with values in the literature and with predictions from the Wilke-Chang equation. The data presented here extend the temperature range of reported diffusivities for these gases in water.