Revamping existing glycol technologies in natural gas dehydration to improve the purity and absorption efficiency: Available methods and recent developments

Kong, Zong Yang; Mahmoud, Ahmed; Liu, Shaomin; Sunarso, Jaka

doi:10.1016/j.jngse.2018.06.008

Cited by 57 publications

(31 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 lb/MMSCF) can be achieved by implementing higher reboiler temperature of 204°C. To achieve lower water moisture in the dry gas stream, one of the methods explained by Kong et al is to employ the stripping gas into the regenerator system . In this work, part of the dry gas was initially added as the stripping gas agent.…”

Section: Resultsmentioning

confidence: 99%

“…The glycol dehydration process has been a subject of recent research studies. Kong et al described and listed several available methods and recent developments in the natural gas dehydration . It includes the conventional dehydration using TEG, the use of inert gas or portion of sales gas as stripping agent, the use of water exhauster (Coldfinger), the use of volatile hydrocarbon as stripping agent (such as Drizo process), as well as other emerging technologies such as membrane technologies and supersonic separator technology.…”

Section: Introductionmentioning

confidence: 99%

“…The addition of a vapor stream (eg, dry product gas or an inert gas such as N 2 ) is reducing the partial pressure of the water vapor in the TEG regenerator column. This reduces the mole fraction of water in TEG solution, which leads to higher purity of regenerated TEG stream …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Technical and economic evaluation of triethylene glycol regeneration process using flash gas as stripping gas in a domestic natural gas dehydration unit

Affandy

Kurniawan

Handogo

et al. 2020

Engineering Reports

View full text Add to dashboard Cite

Natural gas from an underground reservoir is typically saturated with water vapor. Removal of this water vapor is required in the gas processing to avoid serious problems. This study investigated the technical and economic aspects of a triethylene glycol (TEG) regeneration unit in a domestic natural gas processing plant. This study aims to improve the performance of this dehydration unit to meet sales gas specifications while minimizing the Total Annual Cost (TAC). The important variables in this work are TEG circulation mass flow and rerouting the gas from TEG Flash Drum to TEG Regenerator as stripping gas. The flash gas, instead of discharged directly to the Flare system, is routed to the TEG Regenerator and serves as stripping gas agent to improve the TEG purity. The results revealed that utilizing flash gas as stripping gas has allowed lower TEG circulation mass flow rate and reduced the reboiler duty from 1.464 to 0.934 GJ/h (a 36.2% reduction). The TAC was reduced from $ 296 058/year to $ 236 890 /year (20.0% reduction). Through this work, a more economical design was obtained compared to the base case design. K E Y W O R D Sdehydration unit, total annual cost, triethylene glycol 1 This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Technical and economic evaluation of triethylene glycol regeneration process using flash gas as stripping gas in a domestic natural gas dehydration unit

Affandy

Kurniawan

Handogo

et al. 2020

Engineering Reports

View full text Add to dashboard Cite

show abstract

“…Over the past decade, our literature survey indicates that only a handful of techno‐economic analyses have been performed on natural gas dehydration via absorption using TEG . Gad et al .…”

Section: Introductionmentioning

confidence: 87%

“…The introduction of a stripping gas is intended to reduce the partial pressure of the water, which should lead to an increase in the final purity of the regenerated TEG . Details of the stripping gas mechanism can be found in our review paper . It enables the original TEG purity limit of 98.8% in the conventional process to be increased up to 99.7%.…”

Section: Introductionmentioning

confidence: 99%

Development of a techno‐economic framework for natural gas dehydration via absorption using Tri‐Ethylene Glycol: a comparative study on conventional and stripping gas dehydration processes

Kong

Mahmoud

Liu

et al. 2018

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

BACKGROUND: To date, none of the existing techno-economic analyses on natural gas dehydration via absorption using triethylene glycol takes into consideration the profit assessment. This work addresses this shortcoming by developing a techno-economic framework that evaluates the economic feasibility of three different dehydration processes, i.e., conventional dehydration process, stripping gas dehydration process using sale gas, and stripping gas dehydration process using nitrogen, which can meet the maximum water dew point requirement set by local authorities (e.g., Malaysia) for pipeline-transported natural gas. RESULTS: Our techno-economic analyses reveal that the maximum water dew point specification of −25 ∘ C can only be achieved by using a stripping gas dehydration process that consumes more than 260 Nm 3 h −1 of sale gas or 435 Nm 3 h −1 of nitrogen. In particular, the use of sale gas as stripping gas with an optimum flow rate of 260 Nm 3 h −1 generates the highest annual net profit margin, of about $29 million. Such a profit margin is higher with respect to the use of nitrogen as stripping gas and the conventional dehydration process by about $1.6 million and $300 000, respectively. The minimum water dew point specification of 5 ∘ C, on the other hand, can be achieved by all three analysed dehydration processes. CONCLUSION:The use of sale gas as stripping gas becomes more justifiable economically relative to the conventional dehydration process and the other alternative (the use of nitrogen as stripping gas) and when a low water dew point specification of −25 ∘ C is required for natural gas.

show abstract

Natural gas dehydration membranes prepared by incorporating environmentally friendly metal‐organic framework MIP‐202 into polyetherimide

Zhang,

Zeng,

Long

et al. 2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

Using porous materials to selectively adsorb H2O from natural gas is a promising method to dehydrate methane (CH4). The structure of a Zirconium metal‐organic framework (Zr‐MOF), namely, MIP‐202, features a high density of amino groups, which can produce strong hydrogen bonding with H2O molecules. MIP‐202 is cost‐effective, green and scalable, and it exhibits good chemical stability under various conditions. This work incorporated MIP‐202 nanoparticles into the high permeability polymer polyetherimide (PEI), and the obtained Mixed Matrix Membranes (MMMs) was used for the gas separation of H2O/CH4. It is found that MMMs loaded with 20 wt% of MIP‐202 demonstrated a high H2O/CH4 selectivity of 832.2, which was about 760 times of that of the pure PEI. This approach offers a new route to fabricate functional membranes for energy‐efficient gas separations.

show abstract

Revamping existing glycol technologies in natural gas dehydration to improve the purity and absorption efficiency: Available methods and recent developments

Cited by 57 publications

References 59 publications

Technical and economic evaluation of triethylene glycol regeneration process using flash gas as stripping gas in a domestic natural gas dehydration unit

Technical and economic evaluation of triethylene glycol regeneration process using flash gas as stripping gas in a domestic natural gas dehydration unit

Development of a techno‐economic framework for natural gas dehydration via absorption using Tri‐Ethylene Glycol: a comparative study on conventional and stripping gas dehydration processes

Natural gas dehydration membranes prepared by incorporating environmentally friendly metal‐organic framework MIP‐202 into polyetherimide

Contact Info

Product

Resources

About