ClO2-oxidation-based demulsification of oil-water transition layer in oilfields: An experimental study
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Dandan Yuan
Abstract
Separation of oil and water is well known as a key process in the oil industry. For the purpose of improving the efficiency of the oil-water separation, a novel ClO2-oxidation-based demulsification method for the treatment of oil-water transition layer in oil settling tanks was proposed and studied in the present paper. A series of lab experiments were performed to investigate the techniques and conditions of the ClO2-oxidation-based demulsification, including the reaction temperature, time, concentration, etc. It was observed that a high dehydration rate of 86.11 % was achieved under an optimal reaction condition of 50oC, 4 hours, 3.5‰ ClO2 concentration and 0.5 % acid by volume. Tests concerning the corrosion to the steel tank illustrated that the corrosion rate of water layer after treated by ClO2 was lowered to 0.151 mm/a, which was below the national standard. Based on the theoretical analysis and experimental results, a mechanism was presented for understanding the ClO2 demulsification. The developed ClO2-oxidation-based demulsification technology can be practically applied to the pilot operations in oilfields.
Funding statement: We are grateful to Daqing Oilfield, PetroChina for the financial support. Present address of H. Sheng is Daqing Oil Refining and Chemicals Company, Petrochina. The research is financially supported by National Science Foundation of China (Grant no. 21376049, 21306022).
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Articles in the same Issue
- Editorial
- Excitation Kinetics of Oxygen O(1D) State in Low-Pressure Oxygen Plasma and the Effect of Electron Energy Distribution Function
- Using amino-functionalized Fe3O4-WO3 nanoparticles for diazinon removal from synthetic and real water samples in presence of UV irradiation
- Treatment of high salinity wastewater using CWPO process for reuse
- Electrochemical Advanced Oxidation Processes (EAOP) to degrade per- and polyfluoroalkyl substances (PFASs)
- Effect of feedstock impurities on activity and selectivity of V-Mo-Nb-Te-Ox catalyst in ethane oxidative dehydrogenation
- Photocatalytic Degradation of Azo Dyes Over Semiconductors Supported on Polyethylene Terephthalate and Polystyrene Substrates
- Effects of calcination temperature on sol-gel synthesis of porous La2Ti2O7 photocatalyst on degradation of Reactive Brilliant Red X3B
- ClO2-oxidation-based demulsification of oil-water transition layer in oilfields: An experimental study
- Semi-permanent hair dyes degradation at W/WO3 photoanode under controlled current density assisted by visible light
- Degradation of PVA (polyvinyl alcohol) in wastewater by advanced oxidation processes
- Degradation of imidacloprid insecticide in a binary mixture with propylene glycol by conventional fenton process
- Gemini surfactant-assisted synthesis of BiOBr with superior visible light-induced photocatalytic activity towards RhB degradation
- Photocatalytic paraquat degradation over TiO2 modified by hydrothermal technique in alkaline solution
- Enhancement of Profenofos Remediation Using Stimulated Bioaugmentation Technique
- Mechanistic insight on the sonolytic degradation of phenol at interface and bulk using additives
- Biosolubilization of low-grade rock phosphate by mixed thermophilic iron-oxidizing bacteria
- Degradation of methyl orange using dielectric barrier discharge water falling film reactor
- Rapid prediction of hydrogen peroxide concentration eletrogenerated with boron doped diamond electrodes
