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Continuous Corrosion Monitoring In HF Alkylation Units Including The Effects Of Iron Fluoride Scale Build-Up

Picture for Continuous Corrosion Monitoring In HF Alkylation Units Including The Effects Of Iron Fluoride Scale Build-Up
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In oil refineries, one corrosion issue occurs each week worldwide that leads to a severe incident such as sudden leakages, e.g., resulting from pipe ruptures.[1] These facts emphasize the need for corrosion control in refineries. Corrosion monitoring is one important approach to utilize and can maximize equipment integrity and productivity.

Product Number: 51322-17489-SG
Author: William Fazackerley & Attila Gajdacsi
Publication Date: 2022
Industries: Coatings and Linings , Coatings
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$20.00
$20.00

Online Continuous Non-Intrusive Corrosion Monitoring is fast becoming industry best-practice in the Refining Industry globally. This technique involves wireless battery-powered sensors placed in the process units which deliver high-quality data directly to the desk of the corrosion engineer. This paper will present a case study and learnings from various refineries from the deployment of non-intrusive ultrasonic wall thickness monitoring systems in HF alkylation units.

Online Continuous Non-Intrusive Corrosion Monitoring is fast becoming industry best-practice in the Refining Industry globally. This technique involves wireless battery-powered sensors placed in the process units which deliver high-quality data directly to the desk of the corrosion engineer. This paper will present a case study and learnings from various refineries from the deployment of non-intrusive ultrasonic wall thickness monitoring systems in HF alkylation units.

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Picture for Modelling Electrolytic Hydrofluoric Acid In The Fractionation Phase Change Corrosion Zone Of HF Alkylation Units
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Modelling Electrolytic Hydrofluoric Acid In The Fractionation Phase Change Corrosion Zone Of HF Alkylation Units

Product Number: 51322-17520-SG
Author: Andy C. Gysbers, J. Tim Korstanje, Michael S. Cayard, Peiming Wang, Ezequiel Vincent
Publication Date: 2022
$20.00

Hydrofluoric acid (HF) is used as a catalyst in the alkylation process to react isobutane with olefin feeds to manufacture a high octane alkylate product used in gasoline blending. The HF catalyst is added in its anhydrous liquid form (< 400 ppmw H2O) but as it circulates in the reaction system, residual water in the Paper No. 17520 liquid hydrocarbon feed is absorbed by the acid such that the circulating reaction acid builds up a small percentage (0.5 to 2.0 mass%) of water. This water/HF mixture is also referred to as rich HF (RHF). In addition, the alkylation reactions also will generate fluorocarbons and acid soluble oils (ASOs).
Picture for Correlating Qualitative Surface Profile Assessment Methods To Quantitative Methodology On Prepared Concrete
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Correlating Qualitative Surface Profile Assessment Methods To Quantitative Methodology On Prepared Concrete

Product Number: 51322-17606-SG
Author: Michael Beamish, William Corbett
Publication Date: 2022
$20.00

The data produced in this study indicates that there are differences between the ICRI CSP comparator panels and TACM CSP comparator panels. Further, there are differences between taking direct measurements from known surfaces (i.e., the ICRI and TACM CSP panels) and obtaining indirect measurements from an epoxy putty casting of those same known surfaces. Therefore, it is important that the specifier indicate which method is to be used when qualitative or quantitative methods are invoked in the contract documents.
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Composite Repairs And Cathodic Protection

Product Number: 51322-17825-SG
Author: David B. Futch, Davie Peguero, ,\Casey Whalen, Stephen Barnett
Publication Date: 2022
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The motivation for this work was to perform a comprehensive test program to investigate several commercially available composite repair systems and their interactions with cathodic protection. Multiple test methods were utilized to prove there remains a low probability of shielding for composites of typical thickness and in a typical environment. This work will also discuss how results from current industry qualification tests (such as those specified in ASME PCC-2) can be considered when making long-term decisions regarding the effects of cathodic protection on composite repairs and the pipelines on which they are installed. This paper provides an innovative approach to test and validate the interactions of cathodic protection with several commercially available composite repair systems.
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