Process simulation and cost evaluation of carbon membranes for CO                         2                          removal from high-pressure natural gas

Yunhan Chu; Xuezhong He

doi:10.3390/membranes8040118

Process simulation and cost evaluation of carbon membranes for CO ₂ removal from high-pressure natural gas

Yunhan Chu, Xuezhong He^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Natural gas sweetening is required to remove the acid gas CO ₂ 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 CO ₂ /CH ₄ 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% CH ₄ with <2% CH ₄ loss. The specific natural gas processing cost of 1.122 × 10 ^-2 $/m ³ 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.

Original language	English
Article number	118
Journal	Membranes
Volume	8
Issue number	4
DOIs	https://doi.org/10.3390/membranes8040118
State	Published - 1 Jan 2018
Externally published	Yes

Keywords

CO2 removal
Carbon membranes
Cost estimation
Methane loss
Natural gas
Process simulation

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10.3390/membranes8040118

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title = " Process simulation and cost evaluation of carbon membranes for CO 2 removal from high-pressure natural gas ",

abstract = " Natural gas sweetening is required to remove the acid gas CO 2 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 CO 2 /CH 4 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% CH 4 with <2% CH 4 loss. The specific natural gas processing cost of 1.122 × 10 -2 $/m 3 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.",

keywords = "CO2 removal, Carbon membranes, Cost estimation, Methane loss, Natural gas, Process simulation",

author = "Yunhan Chu and Xuezhong He",

note = "Publisher Copyright: {\textcopyright} 2018 by the authors. Licensee MDPI, Basel, Switzerland.",

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doi = "10.3390/membranes8040118",

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AU - Chu, Yunhan

AU - He, Xuezhong

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N2 - Natural gas sweetening is required to remove the acid gas CO 2 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 CO 2 /CH 4 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% CH 4 with <2% CH 4 loss. The specific natural gas processing cost of 1.122 × 10 -2 $/m 3 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.

AB - Natural gas sweetening is required to remove the acid gas CO 2 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 CO 2 /CH 4 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% CH 4 with <2% CH 4 loss. The specific natural gas processing cost of 1.122 × 10 -2 $/m 3 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.

KW - CO2 removal

KW - Carbon membranes

KW - Cost estimation

KW - Methane loss

KW - Natural gas

KW - Process simulation

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Process simulation and cost evaluation of carbon membranes for CO ₂ removal from high-pressure natural gas

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Keywords

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