Consequences of CO2 solubility for hydrate formation from carbon dioxide containing water and other impurities

2014 ◽  
Vol 16 (18) ◽  
pp. 8623-8638 ◽  
Author(s):  
Bjørn Kvamme ◽  
Tatiana Kuznetsova ◽  
Bjørnar Jensen ◽  
Sigvat Stensholt ◽  
Jordan Bauman ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Water Content ◽  
Upper Bound ◽  
Hydrate Formation ◽  
Pipeline Transport ◽  
Co2 Solubility ◽  
Complex Issue ◽  
Dense Carbon Dioxide

Deciding on the upper bound of water content permissible in a stream of dense carbon dioxide under pipeline transport conditions without facing the risks of hydrate formation is a complex issue.

Effect of Common Impurities on the Phase Behavior of Carbon-Dioxide-Rich Systems: Minimizing the Risk of Hydrate Formation and Two-Phase Flow

SPE Journal ◽  
2011 ◽  
Vol 16 (04) ◽  
pp. 921-930 ◽  
Author(s):  
Antonin Chapoy ◽  
Rod Burgass ◽  
Bahman Tohidi ◽  
J. Michael Austell ◽  
Charles Eickhoff
Keyword(s):  
Experimental Data ◽  
Carbon Dioxide ◽  
Phase Behavior ◽  
Water Content ◽  
Thermodynamic Model ◽  
Two Phase Flow ◽  
Hydrate Formation ◽  
Experimental Methodology ◽  
Phase Flow ◽  
Two Phase

Summary Carbon dioxide (CO2) produced by carbon-capture processes is generally not pure and can contain impurities such as N2, H2, CO, H2 S, and water. The presence of these impurities could lead to challenging flow-assurance issues. The presence of water may result in ice or gas-hydrate formation and cause blockage. Reducing the water content is commonly required to reduce the potential for corrosion, but, for an offshore pipeline system, it is also used as a means of preventing gas-hydrate problems; however, there is little information on the dehydration requirements. Furthermore, the gaseous CO2-rich stream is generally compressed to be transported as liquid or dense-phase in order to avoid two-phase flow and increase in the density of the system. The presence of impurities will also change the system's bubblepoint pressure, hence affecting the compression requirement. The aim of this study is to evaluate the risk of hydrate formation in a CO2-rich stream and to study the phase behavior of CO2 in the presence of common impurities. An experimental methodology was developed for measuring water content in a CO2-rich phase in equilibrium with hydrates. The water content in equilibrium with hydrates at simulated pipeline conditions (e.g., 4°C and up to 190 bar) as well as after simulated choke conditions (e.g., at -2°C and approximately 50 bar) was measured for pure CO2 and a mixture of 2 mol% H2 and 98 mol% CO2. Bubblepoint measurements were also taken for this binary mixture for temperatures ranging from -20 to 25°C. A thermodynamic approach was employed to model the phase equilibria. The experimental data available in the literature on gas solubility in water in binary systems were used in tuning the binary interaction parameters (BIPs). The thermodynamic model was used to predict the phase behavior and the hydrate-dissociation conditions of various CO2-rich streams in the presence of free water and various levels of dehydration (250 and 500 ppm). The results are in good agreement with the available experimental data. The developed experimental methodology and thermodynamic model could provide the necessary data in determining the required dehydration level for CO2-rich systems, as well as minimum pipeline pressure required to avoid two-phase flow, hydrates, and water condensation.

Water-wetting surfaces as hydrate promoters during transport of carbon dioxide with impurities

2015 ◽  
Vol 17 (19) ◽  
pp. 12683-12697 ◽  
Author(s):  
Tatiana Kuznetsova ◽  
Bjørnar Jensen ◽  
Bjørn Kvamme ◽  
Sara Sjøblom
Keyword(s):  
Carbon Dioxide ◽  
Hydrate Formation ◽  
Pipeline Transport ◽  
Water Wetting ◽  
Adsorption Of Water

Hydrate formation via adsorption of water on rusty walls will determine hydrate formation risk during pipeline transport of carbon dioxide.

Kinetics of Methane and Carbon Dioxide Hydrate Formation in Silica Gel Pores

2009 ◽  
Vol 23 (7) ◽  
pp. 3711-3715 ◽  
Author(s):  
Seong-Pil Kang ◽  
Yutaek Seo ◽  
Wonho Jang
Keyword(s):  
Carbon Dioxide ◽  
Silica Gel ◽  
Hydrate Formation ◽  
Carbon Dioxide Hydrate ◽  
Kinetics Of

scholarly journals Formation and characterization of emulsions consisting of dense carbon dioxide and water: Ultrasound

2016 ◽  
Vol 109 ◽  
pp. 51-60 ◽  
Author(s):  
Michael T. Timko ◽  
Samuel Marre ◽  
Alex R. Maag
Keyword(s):  
Carbon Dioxide ◽  
Dense Carbon Dioxide

Numerical Simulation of Microscopic Formation of Carbon Dioxide Hydrate in Two-Phase Flow

2021 ◽  
Author(s):  
Alan Junji Yamaguchi ◽  
Kaito Kobayashi ◽  
Toru Sato ◽  
Takaomi Tobase
Keyword(s):  
Carbon Dioxide ◽  
Carbon Capture ◽  
Two Phase Flow ◽  
Pore Space ◽  
Carbon Capture And Storage ◽  
Hydrate Formation ◽  
Field Method ◽  
Phase Field Method ◽  
Phase Flow ◽  
Two Phase

Abstract The global warming is an important environmental concern and the carbon capture and storage (CCS) emerges as a very promising technology. Captured carbon dioxide (CO2) can be stored onshore or offshore in the aquifers. There is, however, a risk that stored CO2 will leak due to natural disasters. One possible solution to this is the natural formation of CO2 hydrates. Gas hydrate has an ice-like structure in which small gas molecules are trapped within cages of water molecules. Hydrate formation occurs under high pressure and low temperature conditions. Its stability under these conditions acts like a cap rock to prevent CO2 leaks. The main objective of this study is to understand how hydrate formation affects the permeability of leaked CO2 flows. The phase field method was used to simulate microscopic hydrate growth within the pore space of sand grains, while the lattice Boltzmann method was used to simulate two-phase flow. The results showed that the hydrate morphology within the pore space changes with the flow, and the permeability is significantly reduced as compared with the case without the flow.

Investigation on the kinetics of carbon dioxide hydrate formation using flow loop testing

2018 ◽  
Vol 49 ◽  
pp. 385-392 ◽  
Author(s):  
Shidong Zhou ◽  
Hongyu Yan ◽  
Di Su ◽  
Seetharaman Navaneethakannan ◽  
Yuandao Chi
Keyword(s):  
Carbon Dioxide ◽  
Hydrate Formation ◽  
Flow Loop ◽  
Carbon Dioxide Hydrate ◽  
Kinetics Of

Synthesis of Large-Size Diamonds by Reduction of Dense Carbon Dioxide with Alkali Metals (K, Li)

2004 ◽  
Vol 108 (14) ◽  
pp. 4239-4241 ◽  
Author(s):  
Zhengsong Lou ◽  
Qianwang Chen ◽  
Yufeng Zhang ◽  
Yitai Qian ◽  
Wei Wang
Keyword(s):  
Carbon Dioxide ◽  
Alkali Metals ◽  
Large Size ◽  
Dense Carbon Dioxide

Lipase-catalyzed long chain fatty ester synthesis in dense carbon dioxide: Kinetics and thermodynamics

2007 ◽  
Vol 41 (1) ◽  
pp. 92-101 ◽  
Author(s):  
Chiara Giulia Laudani ◽  
Maja Habulin ◽  
Željko Knez ◽  
Giovanna Della Porta ◽  
Ernesto Reverchon
Keyword(s):  
Carbon Dioxide ◽  
Fatty Ester ◽  
Ester Synthesis ◽  
Kinetics And Thermodynamics ◽  
Dense Carbon Dioxide ◽  
Long Chain
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