Assessment of Failure Frequency Methodology Applied to Dense Phase Carbon Dioxide Pipelines

2019 ◽  
Author(s):  
Christopher Lyons ◽  
Julia Race ◽  
Ben Wetenhall ◽  
Enrong Chang ◽  
Harry Hopkins ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Dense Phase ◽  
Failure Frequency

scholarly journals Assessment of the Applicability of Failure Frequency Models for Dense Phase Carbon Dioxide Pipelines

2019 ◽  
Vol 87 ◽  
pp. 112-120 ◽  
Author(s):  
C.J. Lyons ◽  
J.M. Race ◽  
B. Wetenhall ◽  
E. Chang ◽  
H.F. Hopkins ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Dense Phase ◽  
Failure Frequency

Polymers with Multiple Ligand Sites for Metal Extractions in Dense-Phase Carbon Dioxide†

2001 ◽  
Vol 40 (5) ◽  
pp. 1301-1305 ◽  
Author(s):  
Kimberly R. Powell ◽  
T. Mark McCleskey ◽  
William Tumas ◽  
Joseph M. DeSimone
Keyword(s):  
Carbon Dioxide ◽  
Dense Phase ◽  
Multiple Ligand

ChemInform Abstract: Heterogeneous Catalysis for Fine Chemicals in Dense Phase Carbon Dioxide

ChemInform ◽  
2008 ◽  
Vol 39 (19) ◽  
Author(s):  
Rosaria Ciriminna ◽  
Massimo L. Carraro ◽  
Sandro Campestrini ◽  
Mario Pagliaro
Keyword(s):  
Carbon Dioxide ◽  
Heterogeneous Catalysis ◽  
Fine Chemicals ◽  
Dense Phase

A Numerical Assessment of Carbon-Dioxide-Rich Two-Phase Flows with Dense Phases in Offshore Production Pipelines

SPE Journal ◽  
2020 ◽  
Vol 25 (02) ◽  
pp. 712-731 ◽  
Author(s):  
Marcelo de A. Pasqualette ◽  
João N. E. Carneiro ◽  
Stein Tore Johansen ◽  
Bjørn Tore Løvfall ◽  
Roberto Fonseca ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Pressure Gradient ◽  
Crude Oil ◽  
Temperature Drop ◽  
Density Ratio ◽  
Flow Simulation ◽  
Phase Identification ◽  
Liquid Density ◽  
Dense Phase ◽  
Offshore Production

Summary One-dimensional numerical simulations of carbon dioxide (CO2)-rich crude-oil flows were performed with a commercial simulator for a typical offshore production pipeline under steady-state scenarios. Mixtures with 20–50 mol% CO2 and gas/oil ratio (GOR) of 300–600 std m3/std m3 were thermodynamically modeled with the predictive Peng-Robinson (PPR78) equation of state (EOS) (Robinson and Peng 1978; Jaubert and Mutelet 2004), and fluid properties were tabulated in pressure/volume/temperature (PVT) lookup tables. Thorough analyses on the separate CO2 and GOR effects on several flow parameters (e.g., temperature drop, pressure gradient, and flow patterns) were performed. The occurrence of the simultaneous flow of liquid and an ambiguous dense phase was quantified and discussed in depth. The properties of those phases [e.g., Joule-Thomson coefficient, viscosity, interfacial tension (IFT), and gas/liquid-density ratio] along the pipeline for several mixtures and operational conditions were addressed as well. It was seen that the dense phase can be a problem for phase-identification criteria, which can affect the flow-simulation results. This was further analyzed in simple cases of horizontal and vertical flows of CO2-rich crude-oil mixtures, under key temperature/pressure conditions. Finally, comparisons were performed between the holdup and pressure-gradient results of those cases, obtained with different liquid/liquid- and gas/liquid-modeling approaches of a hydrodynamic point model of a commercial simulator.

Advances in Homogeneous, Heterogeneous, and Biphasic Metal-Catalyzed Reactions in Dense-Phase Carbon Dioxide

ChemInform ◽  
2004 ◽  
Vol 35 (49) ◽  
Author(s):  
Takao Ikariya ◽  
Ryoji Noyori ◽  
Michael B. Abrams ◽  
Charles A. G. Carter ◽  
Gunilla B. Jacobson ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Dense Phase ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

Inactivation of Escherichia coli (ATCC 4157) in Diluted Apple Cider by Dense-Phase Carbon Dioxide

2006 ◽  
Vol 69 (1) ◽  
pp. 12-16 ◽  
Author(s):  
GURBUZ GUNES ◽  
L. K. BLUM ◽  
J. H. HOTCHKISS
Keyword(s):  
Escherichia Coli ◽  
Carbon Dioxide ◽  
High Sensitivity ◽  
Effect Of Temperature ◽  
Dense Phase ◽  
Apple Cider ◽  
E Coli ◽  
Product Ratio ◽  
Log Reduction ◽  
Temperature And Pressure

Dense-phase carbon dioxide (CO2) treatments in a continuous flow through system were applied to apple cider to inactivate Escherichia coli (ATCC 4157). A response surface design with factors of the CO2/product ratio (0, 70, and 140 g/kg), temperature (25, 35, and 45°C), and pressure (6.9, 27.6, and 48.3 MPa) were used. E. coli was very sensitive to dense CO2 treatment, with a more than 6-log reduction in treatments containing 70 and 140 g/kg CO2, irrespective of temperature and pressure. The CO2/product ratio was the most important factor affecting inactivation rate of E. coli. No effect of temperature and pressure was detected because of high sensitivity of the cells to dense CO2. Dense CO2 could be an alternative pasteurization treatment for apple cider. Further studies dealing with the organoleptic quality of the product are needed.

Selective epoxidation in dense phase carbon dioxide

1998 ◽  
pp. 1015-1016 ◽  
Author(s):  
David R. Pesiri ◽  
David R. Pesiri ◽  
David K. Morita ◽  
William Tumas ◽  
William Glaze
Keyword(s):  
Carbon Dioxide ◽  
Dense Phase
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