An integrated process for simultaneous desulfurization, dehydration, and recovery of hydrocarbon liquids from natural gas streams

1988 ◽  
Vol 27 (3) ◽  
pp. 500-506 ◽  
Author(s):  
Steven F. Sciamanna ◽  
Scott Lynn
Keyword(s):  
Natural Gas ◽  
Integrated Process ◽  
Gas Streams

scholarly journals The second law analysis of natural gas behavior within a vortex tube

2013 ◽  
Vol 17 (4) ◽  
pp. 1079-1092 ◽  
Author(s):  
Mahyar Kargaran ◽  
A. Arabkoohsar ◽  
S.J. Hagighat-Hosini ◽  
V. Farzaneh-Kord ◽  
Mahmood Farzaneh-Gord
Keyword(s):  
Natural Gas ◽  
Entropy Generation ◽  
Vortex Tube ◽  
Tube Length ◽  
Orifice Diameter ◽  
Working Fluid ◽  
Energy Separation ◽  
Second Law ◽  
Gas Streams ◽  
Mass Fractions

Vortex tube is a simple device without a moving part which is capable of separating hot and cold gas streams from a higher pressure inlet gas stream. The mechanism of energy separation has been investigated by several scientists and second law approach has emerged as an important tool for optimizing the vortex tube performance. Here, a thermodynamic model has been used to investigate vortex tube energy separation. Further, a method has been proposed for optimizing the vortex tube based on the rate of entropy generation obtained from experiments. Also, an experimental study has been carried out to investigate the effects of the hot tube length and cold orifice diameter on entropy generation within a vortex tube with natural gas as working fluid. A comparison has been made between air and natural gas as working fluids. The results show that the longest tube generates lowest entropy for NG. For air, it is middle tube which generates lowest entropy. Integration of entropy generation for all available cold mass fractions unveiled that an optimized value for hot tube length and cold orifice diameter is exist.

Optimal Conditions for Bio-Oxidation of Biodesulfurization in Natural Gas Sweetening Process Using Thiobacillus

2015 ◽  
Vol 1104 ◽  
pp. 57-60 ◽  
Author(s):  
Qi Song Liu ◽  
Bo Xu ◽  
Jin Long He ◽  
Ru Sun ◽  
Hong Gang Chang
Keyword(s):  
Natural Gas ◽  
Production Rate ◽  
Alkaline Solution ◽  
Elemental Sulfur ◽  
Influence Factor ◽  
Maximum Yield ◽  
Superior Performance ◽  
Gas Streams ◽  
Airlift Loop ◽  
Recycle And Reuse

Hydrogen sulfide is a common composition of natural gas. It is an important problem to develop suitable natural gas desulfurization technology for the present situation of China. Now, a novel process of H2S abatement from gas streams has been investigated for chemical absorption of H2S using a weak alkaline solution followed by the oxidation of the absorbed sulfide to elemental sulfur by naturally occurring microorganisms and alkaline solution regeneration for recycle and reuse in the process. This method is currently attracting more and more interests of researchers, because it requires little equipment, is inexpensive and produces only elemental sulfur, thus minimizing the production of pollutants. The biological oxidation process of the absorbed sulfides to elemental sulfur by Thiobacillus thioparus TYY-1 was studied in an airlift-loop reactor (effective volume=20L).Two efficiency factors including hydraulic remain time and the air aeration quantity were inspected. The air aeration quantity is key influence factor of desulfuration rate and elemental sulfur production rate. The investigation demonstrated that the optimum hydraulic remain time was 4—6h under the influent concentration of S2- for 200 mg/L, and the best treatment effect of aeration was obtained at 120 —160L/h. With these conditions after 20 days of operation, the result showed superior performance of the bioreactor for desulfuration rate and elemental sulfur production rate, the conversion products were mainly sulfur and the production rate of SO42- was low. The removal efficiency of sulfide was more than 99.5% while the maximum yield of sulfur was 88% approximately.

Technical Evaluation of the Applicability of Gas-Liquid Membrane Contactors for CO2 Removal from CO2 Rich Natural Gas Streams in Offshore Rigs

2019 ◽  
Vol 965 ◽  
pp. 29-38
Author(s):  
Guilherme Pereira da Cunha ◽  
José Luiz de Medeiros ◽  
Ofélia de Queiroz Fernandes Araújo
Keyword(s):  
Natural Gas ◽  
Liquid Membrane ◽  
Feed Flow Rate ◽  
Unit Operation ◽  
Gas Streams ◽  
Feasible Option ◽  
Technical Evaluation ◽  
Gas Conditioning ◽  
Membrane Contactors ◽  
Process Simulator

This work aimed to fulfill a technical evaluation of the applicability of gas-liquid membrane contactors (GLMC) to remove CO2 from CO2 rich natural gas in offshore rigs. For this purpose, a simulation case in HYSYS 8.8 (AspenTech) was performed to remove CO2 from a natural gas stream with concentration of 40% mol CO2 using an aqueous solution of monoethanolamine (MEA) 30% w/w. GLMC unit operation is not available in HYSYS, though. Hence, it was necessary to develop a mathematical model based on log-mean of differences of CO2 fugacities in both phases. Moreover, a GLMC Unit Operation Extension (UOE) was created for GLMC units to run in the process simulator HYSYS 8.8 using its thermodynamic infrastructure. The developed GLMC unit operation extension performed accordingly to the expected behavior. For a gas feed flow rate of 5 MMNm3/d (typical from FPSO's), the calculated total GLMC mass transfer area was 1,986 m2, which requires 14 GLMC modules. Consequently, this operation showed to be a feasible option for CO2 removal in natural gas conditioning on offshore rigs. The heat ratio in the reboilers of CO2 stripping columns was found to be 167 kJ/mol, compatible with data found in the literature of CO2-MEA-H2O systems.

Assessment of ZIF materials for CO2 capture from high pressure natural gas streams

2015 ◽  
Vol 280 ◽  
pp. 486-493 ◽  
Author(s):  
David Danaci ◽  
Ranjeet Singh ◽  
Penny Xiao ◽  
Paul A. Webley
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Co2 Capture ◽  
Gas Streams

Novel Porous Organic Polymer for the Concurrent and Selective Removal of Hydrogen Sulfide and Carbon Dioxide from Natural Gas Streams

2020 ◽  
Vol 12 (42) ◽  
pp. 47984-47992
Author(s):  
Mahmoud M. Abdelnaby ◽  
Kyle E. Cordova ◽  
Ismail Abdulazeez ◽  
Ahmed M. Alloush ◽  
Bassem A. Al-Maythalony ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Sulfide ◽  
Natural Gas ◽  
Selective Removal ◽  
Organic Polymer ◽  
Porous Organic Polymer ◽  
Gas Streams
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