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07570 The Top Ten Corrosion Issues Affecting HF Alkylation Units

Picture for 07570 The Top Ten Corrosion Issues Affecting HF Alkylation Units
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This paper summarizes the Top Ten corrosion issues and examines the controlling factors that affect damage including the effects of operating parameters. Best industry practices used to monitor for problems and to inspect for damage are discussed.

Product Number: 51300-07570-SG
ISBN: 07570 2007 CP
Author: Jonathan D. Dobis
Publication Date: 2007
Industry: Corrosion Monitoring and Control
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Despite significant advances in process technology, there continue to be recurring corrosion problems that affect the safety and reliability of HF Alkylation Units. This paper summarizes the Top Ten corrosion issues and examines the controlling factors that affect damage including the effects of operating parameters. Best industry practices used to monitor for problems and to inspect for damage are discussed. Examples of methods used to minimize the likelihood of failure and mitigate operating risk are included.

Keywords: HF, HFA, hydrofluoric acid, safety, alkylation, alkylate, rerun, regenerator, isostripper, isobutane, propane, butane, corrosion, cracking, carbon steel, combined fluorides, organic fluorides, alumina, treater, defluorinator, contaminants, sulfuric, damage mechanism, RP751, sulfuric, FFS.

 

Despite significant advances in process technology, there continue to be recurring corrosion problems that affect the safety and reliability of HF Alkylation Units. This paper summarizes the Top Ten corrosion issues and examines the controlling factors that affect damage including the effects of operating parameters. Best industry practices used to monitor for problems and to inspect for damage are discussed. Examples of methods used to minimize the likelihood of failure and mitigate operating risk are included.

Keywords: HF, HFA, hydrofluoric acid, safety, alkylation, alkylate, rerun, regenerator, isostripper, isobutane, propane, butane, corrosion, cracking, carbon steel, combined fluorides, organic fluorides, alumina, treater, defluorinator, contaminants, sulfuric, damage mechanism, RP751, sulfuric, FFS.

 

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04645 The Effect of Operating Conditions on Corrosion in HF Alkylation Units

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06588 CORROSION RATES OF CARBON STEEL In HF ALKYLATION SERVICE

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Corrosion rates for carbon steel piping circuits in a petroleum refinery HF (hydrofluoric) Alkylation unit were examined. The HF acid process environment was one of three types: liquid HF acid, superheated HF acid vapor, or HF acid dissolved in a hydrocarbon phase.
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03651 Specification for Carbon Steel Materials for Hydrofluoric Acid Alkylation Units

Product Number: 51300-03651-SG
ISBN: 03651 2003 CP
Author: Andy Gysbers, Hisham Hashim, Dannie Clarida, Gregmar Chirinos, Dr. John Marsh, Dr. Jim Palmer
Publication Date: 2003
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 Joint Industry Project “Materials Specification for HF Alkylation Plant” to develop test and corrosion rate measurement procedures for materials in HF environments and to develop a carbon steel materials specification w.r.t levels of residual elements and carbon in steels for HF alkylation equipment.
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