Amine-Functionalized Graphene for Natural Gas Sweetening

2014 ◽  
Vol 1064 ◽  
pp. 21-25 ◽  
Author(s):  
Mohammed S. Subrati ◽  
Sunil P. Lonkar ◽  
Ahmed A. Abdala
Keyword(s):  
Natural Gas ◽  
Great Promise ◽  
Functionalized Graphene ◽  
Solid Sorbent ◽  
Acid Gases ◽  
Gas Treatment ◽  
X Ray ◽  
Gas Sweetening ◽  
Amine Functionalized ◽  
Natural Gas Sweetening

Natural gas is often contaminated with acid gases; commonly hydrogen sulfide (H2S) andcarbon dioxide (CO2). In addition to their offensive odor and high toxicity, acid gases can cause serious corrosion problems in a gas plant due to their acidic nature and may reduce the efficiency of gas treatment processes. Therefore, several natural gas sweetening processes have been developed for the removal of acid gases. In present work, we report the employment of amine-functionalized graphene hybrid for adsorption of acid gases. Graphene was selected as a solid sorbent due to its very high specific surface area and ability to undergo various chemical transformations.Considering high affinity of amines towards H2S, an aminated polymer, polyethylenimine (PEI) was used as a functionalizing agent. The resulting hybrids were characterized using Fourier Transform Infrared spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), elemental analysis, X-ray Diffraction analysis (XRD), and Thermogravimetric Analysis (TGA). These hybrids are envisioned as materials with high H2S sorption capacities and hold great promise in natural gas sweetening applications.

scholarly journals Penetrant competition and plasticization in membranes: How negatives can be positives in natural gas sweetening

2021 ◽  
Vol 627 ◽  
pp. 119201
Author(s):  
Yang Liu ◽  
Zhijie Chen ◽  
Wulin Qiu ◽  
Gongping Liu ◽  
Mohamed Eddaoudi ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Sweetening ◽  
Natural Gas Sweetening

scholarly journals Simulation and Optimization of the Acid Gas Absorption Process by an Aqueous Diethanolamine Solution in a Natural Gas Sweetening Unit

ACS Omega ◽  
2021 ◽  
Author(s):  
Nasrin Salimi Darani ◽  
Reza Mosayebi Behbahani ◽  
Yasaman Shahebrahimi ◽  
Afshin Asadi ◽  
Amir H. Mohammadi
Keyword(s):  
Natural Gas ◽  
Gas Absorption ◽  
Absorption Process ◽  
Acid Gas ◽  
Simulation And Optimization ◽  
Gas Sweetening ◽  
Natural Gas Sweetening

scholarly journals Process Simulation and Cost Evaluation of Carbon Membranes for CO2 Removal from High-Pressure Natural Gas

Membranes ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 118 ◽  
Author(s):  
Yunhan Chu ◽  
Xuezhong He
Keyword(s):  
Natural Gas ◽  
Cost Evaluation ◽  
Co2 Removal ◽  
Carbon Membrane ◽  
Carbon Membranes ◽  
Feed Pressure ◽  
Gas Sweetening ◽  
Processing Cost ◽  
Future Work ◽  
Natural Gas Sweetening

Natural gas sweetening is required to remove the acid gas CO2 to meet gas grid specifications. Membrane technology has a great potential in this application compared to the state-of-the-art amine absorption technology. Carbon membranes are of particular interest due to their high CO2/CH4 selectivity of over 100. In order to document the advantages of carbon membranes for natural gas (NG) sweetening, HYSYS simulation and cost evaluation were conducted in this work. A two-stage carbon membrane process with recycling in the second stage was found to be technically feasible to achieve >98% CH4 with <2% CH4 loss. The specific natural gas processing cost of 1.122 × 10−2 $/m3 sweet NG was estimated at a feed pressure of 90 bar, which was significantly dependent on the capital-related cost. Future work on improving carbon membrane performance is required to increase the competitiveness of carbon membranes for natural gas sweetening.

Sign in / Sign up

Export Citation Format

Share Document