The phase equilibria of multicomponent gas hydrate in methanol/ethylene glycol solution based formation water

2017 ◽  
Vol 104 ◽  
pp. 212-217 ◽  
Author(s):  
Shurui Xu ◽  
Shuanshi Fan ◽  
Haiyuan Yao ◽  
Yanhong Wang ◽  
Xuemei Lang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Phase Equilibria ◽  
Gas Hydrate ◽  
Formation Water ◽  
Multicomponent Gas ◽  
Glycol Solution

scholarly journals Application of the Cell Potential Method To Predict Phase Equilibria of Multicomponent Gas Hydrate Systems

2005 ◽  
Vol 109 (16) ◽  
pp. 8153-8163 ◽  
Author(s):  
Brian J. Anderson ◽  
Martin Z. Bazant ◽  
Jefferson W. Tester ◽  
Bernhardt L. Trout
Keyword(s):  
Phase Equilibria ◽  
Gas Hydrate ◽  
Potential Method ◽  
Cell Potential ◽  
Multicomponent Gas

Electrochemical micromachining of ZrCu-based amorphous alloy in ethylene glycol solution

2021 ◽  
Vol 132 ◽  
pp. 107155
Author(s):  
Hang Yusen ◽  
Yang Tao ◽  
Xu Zhengyang ◽  
Zeng Yongbin
Keyword(s):  
Amorphous Alloy ◽  
Ethylene Glycol ◽  
Electrochemical Micromachining ◽  
Glycol Solution

Multicomponent Gas Hydrate Nucleation: The Effect of the Cooling Rate and Composition

2011 ◽  
Vol 25 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Hailu K. Abay ◽  
Thor M. Svartaas
Keyword(s):  
Cooling Rate ◽  
Gas Hydrate ◽  
Multicomponent Gas

Recovery of β-galactosidase from a poly (ethylene glycol) solution by diafiltration

1989 ◽  
Vol 11 (11) ◽  
pp. 744-751 ◽  
Author(s):  
Andres Veide ◽  
Torgny Lindbäck ◽  
Sven-Olof Enfors
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
Glycol Solution

scholarly journals ELECTROCHEMICAL REDUCTION OF SELENIUM IONS FROM ORGANIC SOLUTION

2020 ◽  
pp. 43-48
Author(s):  
S.P. Javadova ◽  
Keyword(s):  
Ethylene Glycol ◽  
Electrochemical Reduction ◽  
Effective Activation Energy ◽  
Electrochemical Kinetics ◽  
Organic Solution ◽  
Pt Electrodes ◽  
Type Semiconductor ◽  
Calculation Results ◽  
Metal Dichalcogenides ◽  
Glycol Solution

Due to the unique properties of metal dichalcogenides, they are wide used in various fields of nano- and optoelectronics. Bi2Se3 is one of the promising n-type semiconductor materials belonging to the Av – Bvı group, with a band gap of 0.3 eV. To obtain these compounds by co-electrodeposition, we study the electroreduction of the initial components separately. Therefore, the study is devoted to the electrochemical reduction of selenite ions from the ethylene glycol solution. By drawing cyclic and linear polarization curves on Pt electrodes, the kinetics, the mechanism of the process, and the influence of various factors on the electroreduction of selenite ions are studied. Using the obtained data on the influence of temperature, the effective activation energy was calculated by the Gorbachov method. The calculation results show that the electroreduction of selenite ions from ethylene glycol is accompanied by electrochemical kinetics closer to diffusion

scholarly journals Fabrication and extraction of silicon-containing products from rice husks

2020 ◽  
Vol 61 (1) ◽  
pp. 133-139
Author(s):  
Alexander E. Panasenko ◽  
◽  
Lyudmila A. Zemnukhova ◽  
Nicolay P. Shapkin ◽  
◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Raw Materials ◽  
Rice Husks ◽  
X Ray Diffraction ◽  
Reaction Conditions ◽  
Plant Materials ◽  
Vanadyl Acetylacetonate ◽  
Amorphous Silicon Dioxide ◽  
Glycol Solution ◽  
Heterofunctional Polycondensation

To isolate silicon-containing products from plant materials, the reaction of interaction of rice husks with triethanolamine and ethylene glycol have been investigated. The effect of pretreatment of raw materials and the reaction conditions on the yield of soluble products containing silicon has been studied. It has been shown that the highest enrichment of rice husks with silicon occurs upon its treatment with concentrated hydrochloric acid and the Schweitzer's reagent. The highest degree of silicon extraction (69%) was achieved at using native rice husks and vanadyl acetylacetonate as a catalyst. The resulting solution contained silicon in the form of silatrane fragments. In order to isolate a silicon-containing product from the ethylene glycol solution, which would have the prospect of practical use and the maximum silicon yield, the heterofunctional polycondensation method was applied. It has appeared to be possible to isolate solid products using acetylacetonates of trivalent and tetravalent metals, which formed metal siloxanes. The structure of the obtained compounds has been confirmed by the element and X-ray diffraction analysis, as well as by the IR spectroscopy. When using rice husk chaffs as a silicon source, the product of the reaction with ethylene glycol and triethanolamine has appeared to be an irregular copolymer comprising amorphous silicon dioxide fragments and cyclic fragments similar in structure to that of silatranes. The application of metal acetylacetonates has made it possible to isolate silicon derivatives in the form of organometallic siloxanes. Тhe yield of metalsiloxanes increased in the sequence Zr < Fe < Al. Apparently, this was due to formation of lattice structures in the case of trivalent aluminum and iron, while zirconium had two remaining acetylacetonate groups and, in this case, its functionality was lower than for trivalent metals, which was confirmed by the spectral data.

scholarly journals The inhibition performance of mono-ethylene glycol on corrosion rate of x-80 grade carbon steel in saturated brine environment.

2020 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Acetic Acid ◽  
Charge Transfer ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Ethylene Glycol ◽  
Oil And Gas ◽  
Gas Production ◽  
Electrochemical Measurements ◽  
Co2 Corrosion ◽  
Formation Water

The formation/deposition of hydrate and scale in gas production and transportation pipeline has continue to be a major challenge in the oil and gas industry. Pipeline transport is one of the most efficient, reliable and safer means of transporting petroleum products from the well sites to either the refineries or to the final destinations. Acetic acid (HAc), is formed in the formation water which also present in oil and gas production and transportation processes. Acetic acid aids corrosion in pipelines and in turn aids the formation and deposition of scales which may eventually choke off flow. Most times, Monethylene Glycol (MEG) is added into the pipeline as an antifreeze and anticorrosion agent. Some laboratory experiments have shown that the MEG needs to be separated from unwanted substance such as HAc that are present in the formation water to avoid critical conditions in the pipeline. Internal pipeline corrosion slows and decreases the production of oil and gas when associated with free water and reacts with CO2 and organic acid by lowering the integrity of the pipe. In this study, the effect of Mono-Ethylene Glycol (MEG) and Acetic acid (HAc) on the corrosion rate of X-80 grade carbon steel in CO2 saturated brine were evaluated at 25oC and 80oC using 3.5% NaCl solution in a semi-circulation flow loop set up. Weight loss and electrochemical measurements using the linear polarization resistance (LPR) and electrochemical impedance spectroscope (EIS) were used in measuring the corrosion rate as a function of HAc and MEG concentrations. The results obtained so far shows an average corrosion rate increases from 0.5 to 1.8 mm/yr at 25oC, and from 1.2 to 3.5 mm/yr at 80oC in the presence of HAc. However, there are decrease in corrosion rate from 1.8 to 0.95 mm/yr and from 3.5 to 1.6mm/yr respectively at 25oC and 80oC on addition of 20% and 80% MEG concentrations to the solution. It is also noted that the charge transfer with the electrochemical measurements (EIS) results is the main corrosion controlling mechanism under the test conditions. The higher temperature led to faster film dissolution and higher corrosion rate in the presence of HAc. The EIS results also indicate that the charge transfer controlled behaviour was as a result of iron carbonate layer accelerated by the addition of different concentrations of MEG to the system. Key words: CO2 corrosion, Carbon steel, MEG, HAc, Inhibition, Environment.

Sign in / Sign up

Export Citation Format

Share Document