Effects of residence time on selective absorption of hydrogen sulphide using methyldiethanolamine

2014 ◽  
Vol 2 (3) ◽  
pp. 260 ◽  
Author(s):  
Satyadileep Dara ◽  
Abdallah S. Berrouk
Keyword(s):  
Residence Time ◽  
Hydrogen Sulphide ◽  
Selective Absorption ◽  
Absorption Of Hydrogen

Chemical-oxidative scrubbing for the removal of hydrogen sulphide from raw biogas: potentials and economics

2012 ◽  
Vol 66 (6) ◽  
pp. 1354-1360 ◽  
Author(s):  
M. Miltner ◽  
A. Makaruk ◽  
J. Krischan ◽  
M. Harasek
Keyword(s):  
Hydrogen Sulphide ◽  
Economic Assessment ◽  
Special Focus ◽  
Selective Absorption ◽  
The Novel ◽  
Biogas Upgrading ◽  
Gas Streams ◽  
Novel Method ◽  
Operational Behaviour ◽  
Absorption Of Hydrogen

In the present work chemical-oxidative scrubbing as a novel method for the desulphurisation of raw biogas is presented with a special focus on the process potentials and economics. The selective absorption of hydrogen sulphide from gas streams containing high amounts of carbon dioxide using caustic solutions is not trivial but has been treated in literature. However, the application of this method to biogas desulphurisation has not been established so far. Based on rigorous experimental work, an industrial-scale pilot plant has been designed, erected and commissioned at a biogas plant with biogas upgrading and gas grid injection in Austria. Data collected from the 12-month monitored operation has been used to elaborate performance as well as economic parameters for the novel desulphurisation method. The proposed technology offers significant operational advantages regarding the degree of automation and the flexibility towards fluctuations in process boundary conditions. Furthermore, the economic assessment revealed the high competitiveness of the chemical-oxidative scrubbing process compared with other desulphurisation technologies with the named advantageous operational behaviour.

scholarly journals Droplet Characteristics of Rotating Packed Bed in H2S Absorption: A Computational Fluid Dynamics Analysis

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 724
Author(s):  
Wang ◽  
Wu ◽  
Yang ◽  
Wang ◽  
Liu ◽  
...  
Keyword(s):  
Residence Time ◽  
Droplet Diameter ◽  
Packed Bed ◽  
Droplet Velocity ◽  
Radial Position ◽  
Selective Absorption ◽  
Rotating Speed ◽  
Initial Droplet ◽  
Rotating Packed Bed ◽  
Computational Fluid Dynamics Analysis

Rotating packed bed (RPB) has been demonstrated as a significant and emerging technology to be applied in natural gas desulfurization. However, droplet characteristics and principle in H2S selective absorption with N-methyldiethanolamine (MDEA) solution have seldom been fully investigated by experimental method. Therefore, a 3D Eulerian–Lagrangian approach has been established to investigate the droplet characteristics. The discrete phase model (DPM) is implemented to track the behavior of droplets, meanwhile the collision model and breakup model are employed to describe the coalescence and breakup of droplets. The simulation results indicate that rotating speed and radial position have a dominant impact on droplet velocity, average residence time and average diameter rather than initial droplet velocity. A short residence time of 0.039–0.085 s is credited in this study for faster mass transfer and reaction rate in RPB. The average droplet diameter decreases when the initial droplet velocity and rotating speed enhances. Restriction of minimum droplet diameter for it to be broken and an appropriate rotating speed have also been elaborated. Additional correlations on droplet velocity and diameter have been obtained mainly considering the rotating speed and radial position in RPB. This proposed formula leads to a much better understanding of droplet characteristics in RPB.

SELECTIVE ABSORPTION OF HYDROGEN SULFIDE FROM SYNTHESIS GAS

1953 ◽  
Vol 45 (6) ◽  
pp. 1378-1384 ◽  
Author(s):  
H. W. Wainwright ◽  
G. C. Egleson ◽  
C. M. Brock ◽  
J. Fisher ◽  
A. E. Sands
Keyword(s):  
Hydrogen Sulfide ◽  
Synthesis Gas ◽  
Selective Absorption ◽  
Absorption Of Hydrogen

scholarly journals The Absorption of Hydrogen Sulphide in Contact with Aqueous Solutins. I

1942 ◽  
Vol 63 (8) ◽  
pp. 1007-1014
Author(s):  
Osamu KAMIIKE ◽  
Saburo KATAOKA ◽  
Shoichi INABA
Keyword(s):  
Hydrogen Sulphide ◽  
Absorption Of Hydrogen

Selective absorption of hydrogen chloride from flue gases in the presence of sulfur dioxide

1984 ◽  
Vol 3 (3) ◽  
pp. 183-187 ◽  
Author(s):  
W. S. Kyte ◽  
J. Bettelheim ◽  
N. E. Nicholson ◽  
J. Scarlett
Keyword(s):  
Sulfur Dioxide ◽  
Hydrogen Chloride ◽  
Flue Gases ◽  
Selective Absorption ◽  
Absorption Of Hydrogen
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