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Closed Loop Corrosion Control: Case Studies Of A Reliable, Robust, & Sustainable Treatment Program

Picture for Closed Loop Corrosion Control: Case Studies Of A Reliable, Robust, & Sustainable Treatment Program
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An emerging market driver in industrial water treatment is the move to more sustainable chemistries. Corporate sustainability goals are becoming more common and more stringent. Customers are turning to water treatment companies for innovative solutions that can satisfy their sustainability goals and not sacrifice performance or asset integrity. Indeed, a major trend in evaporative open cooling water treatment is to move away from heavy metals such as zinc and other environmentally questionable materials such as phosphates. Another area of cooling water that is in need of a sustainability refresh is closed cooling loops. The most widespread closed cooling treatment programs are based on combinations of nitrite, molybdate, and borate. All three of these chemicals have regulatory, discharge and/or SH&E concerns.

Product Number: 51322-17723-SG
Author: Michael P. Weberski Jr., Claire Rayner, Dan Meier, Renate Ruitenberg, Bingzhi Chen, Sai Sudhakaran, Steef Vrijhoeven
Publication Date: 2022
Industries: Corrosion Monitoring and Control , Coatings and Linings , Coatings
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$20.00

Closed cooling loops are used to provide the required cooling to critical industrial equipment and processes that cannot tolerate the variability from open recirculating cooling towers. The key challenges in operating a closed loop are corrosion control and microbiological growth. A new non-toxic closed loop corrosion inhibitor program was developed that does not contain nitrite, heavy metal, P, B, or filming amine. This paper will present results from recent field trials using this new digitally-enabled, sustainable corrosion inhibitor program. The first field trial was conducted at a refinery in the Middle East that provided an opportunity to evaluate the new program in a hot loop (>90 °C) that experienced upsets and hydrocarbon ingress. A second field trial was conducted at a steel mill in Europe with a significantly more challenging makeup water that included moderate chloride and no hardness. Positive results from both field trials will be presented that will include coupon weight loss measurements, dissolved Fe concentration, and product actives monitoring.

Closed cooling loops are used to provide the required cooling to critical industrial equipment and processes that cannot tolerate the variability from open recirculating cooling towers. The key challenges in operating a closed loop are corrosion control and microbiological growth. A new non-toxic closed loop corrosion inhibitor program was developed that does not contain nitrite, heavy metal, P, B, or filming amine. This paper will present results from recent field trials using this new digitally-enabled, sustainable corrosion inhibitor program. The first field trial was conducted at a refinery in the Middle East that provided an opportunity to evaluate the new program in a hot loop (>90 °C) that experienced upsets and hydrocarbon ingress. A second field trial was conducted at a steel mill in Europe with a significantly more challenging makeup water that included moderate chloride and no hardness. Positive results from both field trials will be presented that will include coupon weight loss measurements, dissolved Fe concentration, and product actives monitoring.

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Cathodic Protection Of Mooring Chain In Offshore Environment

Product Number: 51322-17722-SG
Author: Faisal Shahzad, Nils Olav Digre, Kristian Varne
Publication Date: 2022
$20.00

Corrosion in Mooring systems for permanently moored floating production units has been identified as a problem area by authorities as well as industry. A Joint Industry Project (JIP) initiated by the Bureau of Safety and Environmental Enforcement (BSEE) with participation from major global oil and gas operators as well as equipment suppliers was established in 2014 to review the problem area. 1 Studies performed as a part of this program have shown that especially mooring chains located in tropical waters have shown signs of rapid corrosion, both general and localized with corrosion rates significantly larger than those specified in design standards. Increased corrosion allowance, as well as increased inspection requirements, have been recommended and corrosion has been reported as the leading cause for pre-emptive replacement of mooring.
CFRP Reinforcement Anode For Cathodic Protection Of Steel Rebar
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CFRP Reinforcement Anode For Cathodic Protection Of Steel Rebar

Product Number: 51322-17877-SG
Author: Xavier Hallopeau, Olivier Lesieutre, Camille Annede-Villeau
Publication Date: 2022
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Only a few researchers have studied the effect of carbon fiber repair on corrosion processes. The main protective effect is the "protective barrier" which is sometimes called passive protection against corrosion, comparable to some techniques such as anticorrosion coatings of concrete structures. Indeed, CFRP materials, applied as external reinforcing material on reinforced concrete structures form a protective barrier against the penetration of moisture and pollutants such as chlorides or carbon dioxide.1.2.3.4.5 Apart from this impermeable barrier action, it has been found in these studies that the confinement of CFRP concrete has a positive influence on the onset of corrosion and on its velocity. Very little research has investigated the coupling between mechanical reinforcement and impressed current system.6,7,8 
Picture for Coatings To Regulate Scaling In Geothermal Applications
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Coatings To Regulate Scaling In Geothermal Applications

Product Number: 51322-17547-SG
Author: Alexandre Sabard, Shiladitya Paul, Briony Holmes, Namrata Kale, Paolo Taddei Pardelli, Claretta Tempesti, Andrea Mannelli, Ural Halaçoğlu, Hakan Alp Sahiller, Raziye Şengün, Sylvie Rouge, Nadia Caney, Andri Stefansson, Per Kjellgren, , Jan Přikryl, Volkan Ediger, Gokhan Kirkil
Publication Date: 2022
$20.00

Geothermal Energy is currently engineered as an “always on” baseload supply, due to the limited flexibility to throttle the well without scaling and fatigue issues, and it is engineered for maximal efficiency at this output level. Scaling is a major problem in geothermal plants, particularly in cases where the geothermal fluid composition and plant operation make it difficult to control scaling. In such areas, particularly where scale inhibitors cannot be employed, the formation of scales can make the process less efficient and in extreme cases can lead to unexpected shutdown.
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