Raw data of methane hydrate equilibrium measurements in the systems of CH4 – H2O – THI and hydrate nucleation/growth in the systems of CH4 – H2O – KHI – THI

The raw data of Part 1 of the work devoted to the study of the methane hydrate equilibrium conditions in the systems of CH4 – H2O and CH4 – H2O – THI (THI = MeOH, MEG, DEG) are given in the “CH4 hydrate equilibrium measurements” archive. Each file with the .xlsx extension corresponds to data obtained from a single equilibrium point measurement and includes columns for time, temperature (°C), and gauge pressure (bar) in the GHA350 autoclave. The file name represents the system under study and the point number for it. For example, the file name “30% DEG_point 4” corresponds to the raw data obtained from measurements of the fourth equilibrium point for a 30 mass% aqueous solution of diethylene glycol. Each file contains the masses of the components taken to prepare an aqueous solution and their concentrations in mass%.
The raw data presented in the archive “CH4 hydrate nucleation&growth” are from Part 2 related to the study of the kinetics of methane hydrate formation in the systems of CH4 – H2O, CH4 – H2O – KHI, and CH4 – H2O – KHI – THI (KHI = copolymer of N-vinylpyrrolidone and N-vinylcaprolactam). Each file with the .xlsx extension contains data obtained in one of the cooling-heating cycles for a specific inhibitor sample. The data in the file includes time (since the start of the cycle), thermostatic bath temperature (°C), and gauge pressure (bar) for each of the six test cells of the RCS6 setup. The file name corresponds to the test sample and the cooling-heating cycle number for it. For example, the file name “0.5%KHI+10% MeOH_1 cycle” corresponds to the raw data obtained in the first cooling-heating cycle for a sample containing 0.5 mass% kinetic inhibitor and 10 mass% methanol in water. Each file contains the exact values of the masses and concentrations of the components.
The raw data are associated with the articles:
[1] Anton P. Semenov, Yinghua Gong, Vladimir I. Medvedev, Andrey S. Stoporev, Vladimir A. Istomin, Vladimir A. Vinokurov, Tianduo Li (2023) Dataset for the new insights into methane hydrate inhibition with blends of vinyl lactam polymer and methanol, monoethylene glycol, or diethylene glycol as hybrid inhibitors // Data in Brief, 46, 108892 DOI: 10.1016/j.dib.2023.108892
[2] Anton P. Semenov, Yinghua Gong, Vladimir I. Medvedev, Andrey S. Stoporev, Vladimir A. Istomin, Vladimir A. Vinokurov, Tianduo Li (2023) New insights into methane hydrate inhibition with blends of vinyl lactam polymer and methanol, monoethylene glycol, or diethylene glycol as hybrid inhibitors // Chemical Engineering Science, 268, 118387 DOI: 10.1016/j.ces.2022.118387