Comparison of different processes for preventing deposition of elemental sulfur in natural gas pipelines: A review

Santos, João Paulo Lobo dos; Lobato, Ana Katerine de Carvalho Lima; Moraes, Caetano; Cunha, Acto de Lima; Silva, Gabriel Francisco da; Santos, Luiz Carlos Lobato dos

doi:10.1016/j.jngse.2016.04.045

Cited by 31 publications

(18 citation statements)

References 37 publications

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“…To overcome the Claus process problems so that the heat of reaction to be well utilized and sulfur recovery rate as well as the unit capacity to be increased, the modified Claus process was presented. In this method, the entire process is divided into two thermal and catalytic sections . The thermal section is performed according to Equation that is highly exothermic.…”

Section: Process Description Specification and Simulationmentioning

confidence: 99%

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Simulation, equipment performance evaluation and sensitivity analysis as a comprehensive parametric study of sulfur recovery unit

Hashemi

Pourfayaz

Mehrpooya

2020

Asia-Pacific J Chem Eng

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The sulfur recovery unit based on modified Claus process with split flow was simulated, so that the validation results showed satisfactory agreement with the refinery data. In this study, comprehensive investigation was carried out on various parameters of the unit. Concentration changes of compounds were investigated as the process stream passes along various equipment. Composite curves were generated, and the minimum approach temperature was calculated as one of the operational parameters of heat exchangers. Fluid condensation probability was investigated in catalytic reactors. The recovery of sulfur and the amount of sulfur production were calculated by process streams passing along catalytic reactors and condensers respectively. The most influential performance parameters including the fuel flow rate, combustion air flow rate, and bypasses fraction were considered as sensitivity analysis parameters, and their variation influences were investigated on the recovery of sulfur, the ratio of hydrogen sulfide to sulfur dioxide, the amount of produced steam, and the furnace outlet stream temperature. The optimal amounts for fuel flow rate and inlet air flow rate were calculated with the values of 0 and 202 mol/s, respectively, and according to the results, 15% of the mainstream flow rate gives the optimum amount of bypass fraction.

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Section: Process Description Specification and Simulationmentioning

confidence: 99%

“…In this method, the entire process is divided into two thermal and catalytic sections. 32 The thermal section is performed according to Equation (2) that is highly exothermic. The heat of reaction is produced by burning one third of hydrogen sulfide, all hydrocarbons, and the rest of the combustibles in the feed.…”

Section: Process Descriptionmentioning

confidence: 99%

Simulation, equipment performance evaluation and sensitivity analysis as a comprehensive parametric study of sulfur recovery unit

Hashemi

Pourfayaz

Mehrpooya

2020

Asia-Pacific J Chem Eng

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“…In recent years, high-sulfur gas has accumulated in geological reserves up to nearly 7×10 11 m 3 , accounting for 1/8 of the total domestic natural gas proven reserves. Due to the toxic and corrosive properties of sulfur and the sulfur precipitation in high-sulfur gas reservoirs, the problems associated with high-sulfur gas reservoirs development are much more complex (Li et al, 2015;Santos et al, 2016;Guo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

The impact of sulfur precipitation in developing a sour gas reservoir with pressure-sensitive effects

2019

Adv. Geo-Energ. Res.

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During the development of high sulfur gas fields, gaseous sulfur is likely to precipitate and deposit in the reservoirs due to the changes of temperature, pressure, and gas compositions. Therefore, how to establish an accurate prediction model of elemental sulfur solubility in gas mixtures is a key issue. At present, most scholars use Roberts elemental sulfur solubility model (SPE Reserv. Eng. 1997, 12(2): 118-123) to describe the damage caused by sulfur deposition in high-sulfur gas reservoirs. However, some scholars believe that the Roberts model needs to be improved and relevant works have been done. In this study, a one-dimensional radial production model is established using the HU model (J. Nat. Gas Sci. Eng. 2014, 18: 31-38) and the Roberts elemental sulfur solubility model. These models can be used to describe the permeability and pressure changes caused by sulfur deposition more accurately. The results show that the permeability and pressure changes in the Roberts model are larger than that of which in the HU model and the pressure-sensitive effects may increase the reservoir damage. The comparison of the calculated results with the true values shows that the HU model is more accurate. This paper may change a number of views about sulfur deposition in high-sulfur gas reservoirs.

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“…[3][4][5] This can lead to the normal production of the gas eld being severely inhibited. [6][7][8][9] In recent years, the problem of sulfur deposition has received extensive attention. Notably, elemental sulfur solubility in high-sulfur-content natural gas is the key factor determining whether sulfur deposition occurs.…”

Section: Introductionmentioning

confidence: 99%

Predicting sulfur solubility in hydrogen sulfide, carbon dioxide, and methane with an improved thermodynamic model

Liu

Yang

2018

RSC Adv.

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Comparison of different processes for preventing deposition of elemental sulfur in natural gas pipelines: A review

Cited by 31 publications

References 37 publications

Simulation, equipment performance evaluation and sensitivity analysis as a comprehensive parametric study of sulfur recovery unit

Simulation, equipment performance evaluation and sensitivity analysis as a comprehensive parametric study of sulfur recovery unit

The impact of sulfur precipitation in developing a sour gas reservoir with pressure-sensitive effects

Predicting sulfur solubility in hydrogen sulfide, carbon dioxide, and methane with an improved thermodynamic model

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