Examination of behavior of lysine on methane (95%)-propane (5%) hydrate formation by the use of different impellers

Longinos, Sotirios Nik
Parlaktuna, Mahmut
Hydrate formation characteristics and hydrodynamic behavior have been investigated for mixture of methane-propane hydrate formation with pure water and with the amino acid of lysine 1.5 wt% at 24.5 bars and 2 degrees C. There were total 12 experiments with full and no baffle estimating the induction time, rate of hydrate formation, hydrate productivity and power consumption. The outcomes showed that radial flow experiments with radial flow have better behavior compared to mixed flow ones due to better interaction between gas and liquid. Furthermore, lysine experiments formed hydrates more quickly compared to pure water experiments showing that lysine functions as promoter and not as inhibitor. RT experiments consume more energy compared to PBT ones, while induction time is always smaller in RT experiments compared to PBT ones.


The impact of methionine, tryptophan and proline on methane (95%)-propane (5%) hydrate formation
Longinos, Sotirios Nik; Longinou, Dimitra-Dionisia; Parlaktuna, Mahmut; Toktarbay, Zhexenbek (2021-10-01)
This study examines the impact of three amino acids such as proline, methionine and tryptophan on methane (95%)-propane (5%) hydrate formation with the use of different impellers. The concentration of amino acids was 1 wt% at 24.5 bar and 2 degrees C. Based on experimental outcomes proline behaves as inhibitor and methionine and tryptophan perform as promoters. RT experiments both formed more quickly gas hydrates and indicated higher values in rate of hydrate formation compared to PBTU and PBTD experiments ...
Kinetic Analysis of Methane Hydrate Formation with Butterfly Turbine Impellers
Longinos, Sotirios Nik.; Longinou, Dionisia Dimitra; Myrzakhmetova, Nurbala; Akimbayeva, Nazgul; Zhursumbaeva, Mariamkul; Abdiyev, Kaldibek; Toktarbay, Zhexenbek; Parlaktuna, Mahmut (2022-07-01)
Heat generation during gas hydrate formation is an important problem because it reduces the amount of water and gas that become gas hydrates. In this research work, we present a new design of an impeller to be used for hydrate formation and to overcome this concern by following the hydrodynamic literature. CH4 hydrate formation experiments were performed in a 5.7 L continuously stirred tank reactor using a butterfly turbine (BT) impeller with no baffle (NB), full baffle (FB), half baffle (HB), and surface b...
The effect of experimental conditions on natural gas hydrate formation
Longinos, Sotirios; Parlaktuna, Mahmut; Department of Petroleum and Natural Gas Engineering (2020)
Natural gas hydrates (NGH) are proposed as gas storage and transportation media owing to their high gas content and long-term stability of hydrate crystal structure at common refrigeration temperatures and atmospheric pressure. Technically feasible, cost efficient hydrate production is one of the crucial items of the whole chain of storage and transportation of gas by means of NGH technology. This study investigated the effects of types of impellers and baffles, and the use of promoters on natural gas hydra...
Experimental investigation of carbon dioxide injection effects on methane-propane-carbon dioxide mixture hydrates
Abbasov, Abbas; Merey, Sukru; Parlaktuna, Mahmut (2016-08-01)
In this research, first, hydrate with high saturation in porous media (sand sediments) was formed in fully filled high pressure cell by using a mixture of the following gases at 4 degrees C: methane (CH4), propane (C3H8) and carbon dioxide (CO2). The feed mole percent of the gases used was selected as follows: CH4 (95%), C3H8 (3%), CO2 (2%). This selection was made in order to form natural gas hydrate of thermogenic origin (sII type hydrate). Thereafter, CO2 injection into the high saturation hydrate media ...
Examination of methane hydrate formation by the use of dual impeller combinations
Longinos, Sotirios Nik.; Parlaktuna, Mahmut (2021-01-01)
The kinetics of methane gas hydrates formation was obtained by different dual impeller (DI) experiments with full baffle (FB) at 42.5 bar pressure and 2 °C temperature. There were 18 (dual and dual mixed) experiments by the use of pitched blade turbine upward trending (PBTU), pitched blade turbine downward trending (PBTD), rushton turbine (RT) and new impeller design trapezoid turbine in upward trending and down ward trending, TTU and TTD respectively. There were estimations of induction time, duration of h...
Citation Formats
S. N. Longinos and M. Parlaktuna, “Examination of behavior of lysine on methane (95%)-propane (5%) hydrate formation by the use of different impellers,” JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/90372.