Effect of monoethylene glycol and triethylene glycol contamination on CO2/CH4 separation of a facilitated transport membrane for natural gas sweetening

Uddin, Mohammad Washim; Hägg, May‐Britt

doi:10.1016/j.memsci.2012.08.011

Cited by 33 publications

(10 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The impact of these glycols on CTA membrane performance was determined by testing the permeation of pure He and CH 4 through the original fresh membranes, the "wet" membranes (after absorbing glycols for a specified time) and the "dry" membranes (after removal of the glycols). As the saturation partial pressures of the glycols are relatively low (11 Pa for MEG and <1 Pa for TEG at 20 o C [7,14]), the removal of the glycols from "wet" CTA membranes was not possible by simple drying, but was instead conducted by solvent exchange with methanol prior to drying. Thermogravimetric analysis for the "dry" CTA confirmed that both glycols and methanol were removed totally by this solvent exchange.…”

Section: Sorption Uptake Of Glycol Liquids In Cellulose Triacetatementioning

confidence: 99%

“…This is a significant issue, because glycol is known to plasticise polymers [12], and the entrainment of the glycol solution into the membrane unit can thus alter the permselectivity of the membrane [13]. A study on the effect of MEG and TEG vapours on CO 2 /CH 4 separation across a facilitated transport membrane has been reported [14]. However, to the best knowledge of the authors, there is no study on the effect of glycol solutions on the gas separation performance of CTA membranes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The impact of ethylene glycol and hydrogen sulphide on the performance of cellulose triacetate membranes in natural gas sweetening

Kanehashi

Scholes

et al. 2017

Journal of Membrane Science

View full text Add to dashboard Cite

In natural gas sweetening, gas dehydration with glycols is typically carried out upstream of membrane separation of carbon dioxide. This means that when process upsets occur, these glycols can reach the membrane unit. In this work, we study the impact of two common glycols (monoethylene glycol and triethylene glycol) on the gas transport performance of CTA. We find that the glycol absorbed into the membrane initially obstructs the permeation of CH 4 and CO 2, due to pore filling or antiplasticisation effects, but the permeability then increases again, indicative of polymer relaxation and a loss of crystallinity in the polymer. The smaller helium molecule is significantly less affected by the presence of the glycols, possibly because its lower solubility within glycol limits its movement through the swollen structure. However, after removing the glycols with a methanol wash, the membrane performance recovers with only a slight residual plasticisation observed. In addition, the permeation of H 2 S, a common contaminant within natural gas streams, was studied across a range of temperatures. At the partial pressures studied (up to 0.75 kPa), H 2 S had very little effect on the membrane performance even in long-term exposure for up to 300 days.

show abstract

Section: Sorption Uptake Of Glycol Liquids In Cellulose Triacetatementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The impact of ethylene glycol and hydrogen sulphide on the performance of cellulose triacetate membranes in natural gas sweetening

Kanehashi

Scholes

et al. 2017

Journal of Membrane Science

View full text Add to dashboard Cite

show abstract

“…In biogas or natural gas there are components present which may be detrimental to the membrane, such as H 2 S, higher hydrocarbons (HHC) or other impurities. Only two references were found on this for natural gas [145,146].…”

Section: Conclusion and Summarymentioning

confidence: 99%

Role of Facilitated Transport Membranes and Composite Membranes for Efficient CO₂ Capture – A Review

2016

Self Cite

View full text Add to dashboard Cite

CO 2 emission from anthropogenic sources has raised global environmental concerns, and efficient reduction of these greenhouse gas emissions by capturing CO 2 is recognized world-wide as very important along with the implementation of new green energy technology. Membrane technology is considered to be one of the efficient techniques to be used for CO 2 capture. Among different types of membranes, mixed matrix membranes and facilitated transport membranes have gained much interest in recent years due to documented high CO 2 permeance through these membranes, especially when the gas is humid as is the case for flue gas from combustion. In the current review, a comprehensive discussion is focused on the development of hybrid membranes involving the selection of the fixed site carrier (FSC) membranes and the interaction of nanosilica-particles in a polymer membrane for efficient CO 2 capture. Other facilitated transport membranes and mixed matrix membranes are also briefly discussed.

show abstract

“…A few studies have been conducted on this issue where the researchers are studying the long-term performance of a polymeric PVAm/PVA membrane when exposed to H 2 S, MEG, TEG and higher hydrocarbons (HHC) which are usually present in natural gas. Their membranes seemed to tolerate the impurities relatively well, but were vulnerable to HHC [86,87]. …”

Section: Natural Gas Sweeteningmentioning

confidence: 99%

Membranes for Environmentally Friendly Energy Processes

Hägg

2012

Membranes

Self Cite

119

View full text Add to dashboard Cite

Membrane separation systems require no or very little chemicals compared to standard unit operations. They are also easy to scale up, energy efficient, and already widely used in various gas and liquid separation processes. Different types of membranes such as common polymers, microporous organic polymers, fixed-site-carrier membranes, mixed matrix membranes, carbon membranes as well as inorganic membranes have been investigated for CO2 capture/removal and other energy processes in the last two decades. The aim of this work is to review the membrane systems applied in different energy processes, such as post-combustion, pre-combustion, oxyfuel combustion, natural gas sweetening, biogas upgrading, hydrogen production, volatile organic compounds (VOC) recovery and pressure retarded osmosis for power generation. Although different membranes could probably be used in a specific separation process, choosing a suitable membrane material will mainly depend on the membrane permeance and selectivity, process conditions (e.g., operating pressure, temperature) and the impurities in a gas stream (such as SO2, NOx, H2S, etc.). Moreover, process design and the challenges relevant to a membrane system are also being discussed to illustrate the membrane process feasibility for a specific application based on process simulation and economic cost estimation.

show abstract

Effect of monoethylene glycol and triethylene glycol contamination on CO2/CH4 separation of a facilitated transport membrane for natural gas sweetening

Cited by 33 publications

References 47 publications

The impact of ethylene glycol and hydrogen sulphide on the performance of cellulose triacetate membranes in natural gas sweetening

The impact of ethylene glycol and hydrogen sulphide on the performance of cellulose triacetate membranes in natural gas sweetening

Role of Facilitated Transport Membranes and Composite Membranes for Efficient CO₂ Capture – A Review

Membranes for Environmentally Friendly Energy Processes

Contact Info

Product

Resources

About

Effect of monoethylene glycol and triethylene glycol contamination on CO2/CH4 separation of a facilitated transport membrane for natural gas sweetening

Cited by 33 publications

References 47 publications

The impact of ethylene glycol and hydrogen sulphide on the performance of cellulose triacetate membranes in natural gas sweetening

The impact of ethylene glycol and hydrogen sulphide on the performance of cellulose triacetate membranes in natural gas sweetening

Role of Facilitated Transport Membranes and Composite Membranes for Efficient CO2 Capture – A Review

Membranes for Environmentally Friendly Energy Processes

Contact Info

Product

Resources

About

Role of Facilitated Transport Membranes and Composite Membranes for Efficient CO₂ Capture – A Review