Vahid Mohebbi

Vahid Mohebbi
Petroleum University of Technology | PUT · Departemnt of Gas Transportation and Process Engineering

PhD

About

20
Publications
2,611
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258
Citations
Citations since 2016
12 Research Items
233 Citations
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050

Publications

Publications (20)
Article
Multifaceted benefits of natural gas as the cleanest fossil fuel resulted in significant shift from other forms of fossil fuels to natural gas in different sectors over the past years. Applying natural gas as the medium-term future energy source is an effective climate strategy. Recently, gas hydrate gained significant attention as a solution for p...
Article
In this work, several experiments were conducted at isobaric and isothermal condition in a CSTR reactor to study the kinetics of methane hydrate formation and dissociation. Experiments were performed at five temperatures and three pressure levels (corresponding to equilibrium pressure). Methane hydrate formation and dissociation rates were modeled...
Article
Efficient capture and storage of carbon dioxide can avoid the global warming crisis. Gas hydrate, as a novel gas separation technique has an excellent potential for CO2 capture from power plants effluent streams. In this study, synergy analysis performed between hydrate-based separation and membrane separation techniques to develop a process for po...
Article
Kinetics of hydrate formation and dissociation of carbon dioxide studied through experiments carried out at isothermal-isobaric condition in a constant stirred tank reactor (CSTR). Experiments performed at different temperatures and pressure levels. Constant rates of CO2 mole consumption and mole production observed during hydrate formation and dis...
Article
Chemical industries need to employ new process designs due to environmental policies and energy optimization because of the global energy challenge. Pervaporation has been introduced as a promising alternative for conventional processes such as distillation, known as energy intensive process, in chemical plants. In this work, the energy consumption...
Article
Removal of aromatic compounds from fuel is an essential requirement in new environmental policies. In the present study, poly(vinyl alcohol)/graphene oxide (GO) mixed matrix membranes were prepared and applied to the separation of toluene from iso-octane by pervaporation, considering the similarity and interaction between graphene and aromatics. Th...
Article
Full-text available
The Super-saturation condition has to be provided to form gas hydrates. Consequently, the prediction of the guest molecule fraction in the aqueous phase is crucial in the study of the gas hydrate kinetics. In the present work, several experiments were carried out in a semi-batch reactor in order to determine the mole fraction of methane and ethane...
Article
Hydrate formation is a new technique to separate hydrogen from carbon dioxide. In this way, modeling and prediction of gas hydrate kinetics is very important. Several experiments have been conducted to study the hydrate formation from pure carbon dioxide and mixture of hydrogen and carbon dioxide in a stirred reactor in different temperatures, pres...
Article
Full-text available
In this paper, the mole fraction of methane and ethane in aqueous solutions of NaCl and MgCl2 during hydrate growth in a semi-batch stirred tank reactor is reported. Methane mole fraction measurements in aqueous solutions of NaCl were conducted at molalities of 0.529 and 1.092, temperatures of 275.15–290.15 K, and pressures of 40–68 bar. The same c...
Article
Full-text available
Several models have been proposed to investigate the kinetics of gas hydrate formation. The main differences between the proposed models are the definition of the driving force, thermodynamics approach and the number of resistances to study the gas consumption by the hydrate phase. This paper concentrates on gas hydrate formation from multicomponen...
Article
Poly (Vinyl Alcohol)/Graphene Oxide mixed matrix membranes have been prepared and applied for the pervaporation of isooctane (aliphatic) and toluene (aromatic) mixtures. Characteristics of the membranes such as crystallinity, morphology and swelling have been investigated and the results have been employed to describe pervaporation performance. Exp...
Article
In the present study, adsorption of the sulfur compound onto two types of molecular sieve (HYD10B and LQ-MS-13X) in a batch system was investigated. It has been illustrated that HYD10B type has more adsorption capacity than LQ-MS-13X type to separate ethyl mercaptan from simulated liquid mixture. Selected as the better adsorbent, the isotherm equil...
Article
Full-text available
In this work, we studied the mass transfer phenomenon of ethane during hydrate formation. Fifteen different tests were conducted over temperature range of (273.15 to 282.15) K and three levels of pressure at each temperature. A mass transfer approach has been consumed and was evaluated with experiments. We predicted the mass transfer coefficients o...
Article
Full-text available
In order to use the fugacity or solubility as the driving force during hydrate formation, we need to measure the mole fraction of hydrate former gases in the liquid phase. In this study, the mole of CO2 in water was measured and reported. The isobaric experiments were conducted at temperatures between 275 and 281 K and different degrees of super sa...
Article
In the present work, mass transfer coefficients of main natural-gas components, methane and ethane, are determined during the hydrate formation. A complete explanation is given to show that the liquid mass transfer resistance at the gas-liquid interface predominates in the process. A fast and precise model has been also proposed to predict the rate...
Article
Full-text available
In this work, gas consumption by clathrate hydrate from mixture of natural gas at different pressures and temperatures (275.15–287.25 K and 1.1–5.4 MPa) are reported. The experiments were conducted in a stirred-reactor tank in isothermal and isochoric conditions. The amount of consumed gas by the hydrate phase was determined considering the pressur...
Article
Full-text available
In this paper, the mass transfer phenomenon during hydrate formation from methane is explained. It is demonstrated that during the hydrate formation of methane, the mass transfer in the liquid side of the contact area of gas–liquid controls the gas consumption. Two types of experiments (isochoric and isobaric) have been conducted in a stirred vesse...
Article
Full-text available
The solubility of i-butane in water at the low temperatures was measured (274 K to 293 K). Additionally, Henry’s law constants of light hydrocarbons (methane, ethane, propane, i-butane, and n-butane) in water at the low temperatures are reported. A modified equation based on Krichevsky–Kasarnovsky equation is proposed to consider the effect of pres...
Article
Full-text available
In order to calculate lean and semilean amine flow rates in gas treatment plants, a new method of calculation algorithm can be used which is based on simplifying assumptions that permit quick shortcut calculations. The calculation arises from the fact the the temperature profile used to determine absorption with amines is an unsuitable way to monit...

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