Carbon deposition and the role of reducing agents in hot-corrosion processes

McKee, D.W.; Romeo, G.

doi:10.1007/bf02665416

Cited by 16 publications

(10 citation statements)

References 10 publications

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“…H 2 S, CO 2 and Clthat are components of hydrate are acidic gases, which have been established to contribute to internal gas pipeline corrosion rate [23]. Methane (CH 4 ), the major component of natural gas, as a reducing agent also aids metal corrosion [24]. Water is another known corrosive agent [25].…”

Section: Gas Hydrates In Pipelinesmentioning

confidence: 99%

The Role of Natural Gas Hydrate During Natural Gas Transportation

Merey¹,

Longinos²

2018

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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The dependence of industry on natural gas has increased a lot last decades so the transportation of natural gas has become one of the most important issue in natural gas industry. Although the formation of natural gas hydrate is a problem in natural gas pipelines, the transportation of natural gas as natural gas hydrates by ships or trucks is an advantage. Therefore, in this study, first, the studies related to the inhibition of natural gas hydrate in pipelines are reviewed because there are many gas pipeline projects so natural gas hydrate inhibition is an important issue in natural gas industry. Then, the studies related to the transportation of natural gas as natural gas hydrates are reviewed in this study because this is a new subject and for the future, if research and development in this transportation method could be done successfully, this method might be better alternative compared to LNG and CNG natural gas transportation methods.

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Section: Gas Hydrates In Pipelinesmentioning

confidence: 99%

The Role of Natural Gas Hydrate During Natural Gas Transportation

Merey¹,

Longinos²

2018

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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“…Methane (CH 4 , the major component of natural gas) as a reducing agent also aids metal corrosion (Yan et al, 2002;McKee and Romeo, 2007). Water is another known corrosive agent (Kritzer, 2004).…”

Section: Corrosion Initiation Through Physical Processmentioning

confidence: 99%

Hydrate Formation and its Influence on Natural Gas Pipeline Internal Corrosion Rate

Obanijesu

Pareek

Tadé

2010

SPE Oil and Gas India Conference and Exhibition

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Hydrate formation along the natural gas pipeline has been identified as a serious threat to the survival of oil and gas industry. The formation if not quickly removed may plug the flowline to collapse the system. This problem costs the industry billions of dollars in revenue loss annually. While all the available literatures on hydrate formation process have focused on its ability to plug the flow line, there has been little or no recognition of its ability to initiate internal corrosion of the pipeline which is a bigger problem to the industry, hence, the importance of this study. This work focuses on this new area for research interest aimed at revolutionalizing the field of corrosion science and technology. In this study, the composition of the lattice which includes methane (CH 4 ), carbondioxide (CO 2 ) or hydrogen sulphide (H 2 S) and water molecules (H 2 O) amongst others is considered. These gases have the ability to easily undergo chemical and/or electrochemical reactions with the pipeline's internal surface while the lattice is in place. The reaction(s) will easily initiating corrosion of the pipe. The study further identifies the fact that even after the successful removal of the hydrate, the initiated corrosion process may continue with the continuous flow of the fluid within the pipeline thereby leading to gradual degradation of the material and deterioration of the pipe's integrity. Over time, the pipeline will begin to leak and/or may undergo full bore rupture (FBR). This, apart from the economic consequences will also generate environmental and political consequences and may lead to complete replacement of the pipe-length. Various management schemes including the necessity for the industry to heavily invest in research and development are recommended.

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“…The higher carburization depth exhibited by samples packed in Na 2 SO 4 , could be explained considering the reduction of Na 2 SO 4 to Na 2 S in presence of carbon [9,10]. This reaction can occur at temperatures as low as 450 8C depending on the carbon grain size [9]. This reaction liberates the oxygen contained in Na 2 SO 4 , which contributes to the carburization process transporting carbon to the metallic surface as CO (similar to the effect of carbonates [11]) by the Boudouard reaction:…”

Section: Post-exposure Examinationmentioning

confidence: 99%

“…The behavior of samples carburized in V 2 O 5 might be explained assuming a high stability of V 2 O 5 even in the presence of carbon. The higher carburization depth exhibited by samples packed in Na 2 SO 4 , could be explained considering the reduction of Na 2 SO 4 to Na 2 S in presence of carbon [9,10]. This reaction can occur at temperatures as low as 450 8C depending on the carbon grain size [9].…”

Section: Post-exposure Examinationmentioning

confidence: 99%