Comparison of purification processes of natural gas obtained from three different regions in the world

Koyun, Tansel; Kunduz, Mehmet; Öztop, Hakan F.; Üçgül, İbrahim

doi:10.1016/s1003-9953(11)60334-4

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…Thus, for this test, the methane jet velocity at the nozzle outlet is the same, i.e., the local sonic speed, even the injection pressure varies. The methane jet initial energy, i.e., the jet kinetic energy 1 2 mv 2 at the nozzle outlet depends on both the methane jet mass m and its jet velocity v. The gas jet mass m is relatively much smaller than the gas jet velocity v. Moreover, the kinetic energy is property of the first order of the jet mass but the square of velocity. Thus, the velocity causes dominant effect on the jet kinetic energy.…”

Section: Resultsmentioning

confidence: 99%

“…Natural gas (NG) is a low-carbon fuel, and is widely used in the practical industry such as power plants, and vehicle and marine engines to produce less harmful emissions (Koyun et al, 2012) [1]; (Samokhvalov et al, 2018) [2]. For modern NG engines, the gas-fuel direction injection (DI) technique benefits the engines with high thermal efficiency and less emission pollutants [3], and now the direct injection compression ignition (DICI) engines have been a prospective research and development focus since they have high efficiency while producing less emissions (Gogolev and Wallace, 2018) [4].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Research of High-Pressure Methane Pulse Jet and Premixed Ignition Combustion Performance of a Direct Injection Injector

et al. 2021

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Natural gas (NG) direct injection (DI) technology benefits the engine with high efficiency and clean emissions, and the high-pressure gas fuel injection process causes crucial effects on the combustion. This study presents an optical experimental investigation on the high-pressure methane single-hole direct injection and premixed ignition combustion based on a visualization cuboid constant volume bomb (CVB) test rig. The experimental results show that the methane jet process is divided into two stages. The methane gas jet travels at a faster speed during the unstable stage I than that during the stable stage II. The injection pressure causes more influence on both the jet penetration distance and the jet cone area during stage II. The methane jet premixed flame is a stable flame with a nearly spherical shape, and its equivalent radius linearly increases. The methane jet premixed flame area also increases while the flame stretch rate declines. The methane jet premixed flame velocity rises as both the standing time and equivalent ratio increase. The methane jet premixed flame is a partial premixed flame, and the peak of the methane jet premixed flame occurs at greater equivalence ratio ϕ, i.e., ϕ > 2. As the injection pressure rises, the jet premixed flame equivalent radius increases, and the flame velocity linearly increases. The higher the methane injection pressure, the faster the jet premixed flame velocity.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Research of High-Pressure Methane Pulse Jet and Premixed Ignition Combustion Performance of a Direct Injection Injector

et al. 2021

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“…In the production of natural gas, desulfurization is necessary to meet the pipeline specifications or to allow its commercial use as a fuel, and it involves the removal of H 2 S and CO 2 , among other components. , In Brazil, to deliver natural gas to consumers, existing contaminants must be within an acceptable level as determined by the National Agency of Petroleum, Natural Gas and Biofuels (ANP), and the maximum level of sulfur compounds allowed is 70 mg/m 3 . , In other countries, this maximum level is also stipulated in their respective legislation. For example, in the United States, the maximum acceptable levels are 10 ppm H 2 S and 250 ppm of SO 2 …”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Influence of Operating Parameters in the Modeling and Simulation of Sour Gas Stream Desulfurization by Adsorption

Santos¹,

Lobato

Moraes

et al. 2019

Energy Fuels

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Natural gas is a fossil fuel whose participation in the world’s energy matrix has been growing, but before becoming marketable, it has to undergo some treatments to eliminate corrosive compounds. Such treatments focus, mainly, on removing hydrogen sulphide (H2S) and carbon dioxide (CO2), with adsorption being one of the recommended techniques for removal. The presence of H2S in the gas stream can lead to serious problems of corrosion and deposition of elemental sulfur. Its burning can also result in environmental and health problems. In this work, we evaluated the influence of operating parameters (bed length, feed flow of the adsorption column, adsorbate concentration in the gas stream, pressure, and temperature) on the removal of H2S from a gas stream, and to this end, we employed a factorial design, which resulted in the simulation of different cases by modifying the above-cited parameters. To execute the simulations, we used Comsol Multiphysics 4.3a, a computational fluid dynamics software, and processed the results using Statistica 8.0. The results showed that at the significance level of 95%, only pressure and temperature were statistically significant parameters. Moreover, we observed that an increase in pressure favors the adsorption, while for the temperature, the opposite process occurs.

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“…In the production of natural gas, purification is necessary to meet pipeline specifications or for commercial use as fuel, and this involves the removal of H 2 S and CO 2 , among other components (Koyun et al, 2012;Kunz and Wagner, 2012).…”

Section: Introductionmentioning

confidence: 99%

Prediction of Three Component Gas Adsorption With Iast and Langmuir

Oliveira¹,

Meneguin²,

Silva³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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-Purification of natural gas is important to avoid pipe corrosion and improve its specific heat. This operation is mainly focused on hydrogen sulfide and carbon dioxide removal from methane, and adsorption is one of the proposed techniques. In this work, experimental adsorption isotherms for CH 4 , CO 2 or H 2 S, in NaY zeolite, at 30°C were determined and the Ideal adsorption solution theory (IAST) and Langmuir adsorption isotherm were used to predict the adsorption behavior of the gas mixture composed by CH 4 + CO 2 + H 2 S, at 1, 20 or 50 bar. According to Langmuir equation, the maximum adsorbed capacity was approximately 3.77, 7.06, and 7.02 mol/kg, for CH 4 , CO 2 , and H 2 S, respectively. The calculated values of distribution coefficient (K) and selectivity (S) indicate zeolite adsorbs more H 2 S than CO 2 . Also, K values are increased with CH 4 content, although S values are greater for high H 2 S concentration.

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Comparison of purification processes of natural gas obtained from three different regions in the world

Cited by 6 publications

References 12 publications

Experimental Research of High-Pressure Methane Pulse Jet and Premixed Ignition Combustion Performance of a Direct Injection Injector

Experimental Research of High-Pressure Methane Pulse Jet and Premixed Ignition Combustion Performance of a Direct Injection Injector

Evaluation of the Influence of Operating Parameters in the Modeling and Simulation of Sour Gas Stream Desulfurization by Adsorption

Prediction of Three Component Gas Adsorption With Iast and Langmuir

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