... challenges under the HTL processes for the industrial-scale deployment of this conversion technology. Among them, the impact of organic acids generated during HTL processes on the corrosion of refinery reactor alloys remains as a puzzle. In this work, static autoclave tests under organic acid-containing HTL...

... modeling, it is possible to simulate the thermodynamic equilibrium species present in the well and then simulate the corrosion that would occur in the presence of those species. well horizontal CO₂ corrosion acetic acid corrosion organic acids aqueous modeling electrolyte modeling pitting...

... underneath deposits was detected; the best performance was observed for UNS N06059 and UNS R50400. UNS R50400 UNS R53400 UNS N06059 UNS N08031 UNS N10665 inorganic acids organic acids corrosion INTRODUCTION Many chemical processes operate in acidic high temperature service media requiring the use...

... acid) appears to be the least corrosive alternative to zinc naphthenate. wood wood-preservatives organic acids fasteners INTRODUCTION Figure 2 shows the percent weight loss after 2 weeks for each of the 10 preservatives. The wires treated with zinc naphthenate had the lowest amount of corrosion...

... both on unwelded and welded samples immersed in mixtures of acetic acid and formic acid with sulfuric acid at elevated temperatures are presented. UNS N06058 Ni-Cr-Mo alloys chemical process industry organic acids sulphuric acid ACKNOWLEDGEMENT The authors wish to thank Dr. Matthias Langer (IKS...

... of organic acid will reduce the pH and increase the iron solubility in the condensing water. It is therefore important that the chemical equilibrium calculations also include the effect of organic acids. Condensation of pure water is well understood and calculation of condensation rates has been implemented...

...Abstract Loop testing has been carried out to identify the corrosion for 13Cr SS, modified 13Cr SS and 15Cr SS under 2 MPa CO₂ in 20,000 ppm NaCl solution with varying concentrations of H₂S and organic acids at a temperature of 40°C. It is found that the corrosion behaviors...

...Acetic acid (CH₃COOH) is the most important organic acid. It is used as a raw material in a large number of chemical processes. For example, acetic acid is used for the production of cellulose acetate, vinyl acetate monomer, acetic ester, pharmaceuticals, plastics, dyes and insecticides...

... of chemistries, reactions, the fate of acids in the desalting operation, and their potential impacts on downstream operations. Field experience and observations from acidification programs will be presented and discussed. Desalter Desalter Acidification crude unit corrosion fouling organic acids Introduction...

... behavior of Alloy 22 (N06022) in 1M NaCl solutions at various pH values from acidic to neutral at 90°C. All the tested material was wrought Mill Annealed (MA). Tests were also performed in NaCl solutions containing weak organic acids such as oxalic, acetic, citric and picric acids. Results show...

... or semi-empirical. By using this model it was possible to reliably predict the effects of key variables that affect internal pipeline corrosion such as: Effect of temperature (20-100°C); Effect of CO₂ partial pressure (0 – 2 MPa); Effect of organic acids (0 – 1000 ppm); Effect...

... the corrosion inhibitor compatibility with non-metallic seals and KHI performance will also be highlighted. sour wet gas corrosion inhibition partitioning KHI organic acids top of line corrosion INTRODUCTION The search for new oil and gas reserves is leading the industry to extract these resources from...

... acidified with HCl. Acetic acid was not corrosive to Alloy 22. The corrosivity of oxalic acid was attributed to its capacity to form stable complex species with metallic cations from Alloy 22. Alloy 22 N06022 organic acids oxalic acetic pH corrosion rate INTRODUCTION Alloy 22 (N06022) contains...

... are given. Corrosion rate models for the corrodents CO₂, H₂S, (organic) acids, bacteria, and oxygen are described. The corrosion rate models are integrated with models for water chemistry, multi-phase flow, oil protectiveness, heat transfer, and thermodynamics. Elevation effects can...

...alloy 59 - UNS N06059 alloy 31 - UNS N08031 alloy B-2 - UNS N10665 alloy B-4 - UNS N10629 corrosion resistance organic acids ethanol sulphuric acid hydrochloric acid oxygen ferric ions chloride INTRODUCTION Organic environments, for example organic acids, are important precursors...

...Detailed Studies of Organic Acids in CO₂ Production In the remainder of this paper acetic acid is used in the discussion since it is the dominant low molecular weight organic acid found in produced fluids . Abstract This paper reviews the effect of low molecular weight organic acids...

...The effect of impurities like oxidizing metal ions can also be demonstrated. (8) Cu ↔ Cu + + + 2 e − +0 .337 Corrosion possible (7) Fe + + + + e − ↔ Fe + + + 0.771 volts Abstract The corrosion of materials by organic acids is complicated...

... with the so-called iron super-saturation model. Avoiding high water condensation rates resulting from a low pipe wall temperature can obviate TOL corrosion. The protective corrosion product scale formed in TOL corrosion may be jeopardized by the presence of organic acids. pipeline carbon dioxide corrosion...

...., less than one year). Laboratory studies have replicated service failures. The sources of the corrosive species that promote this form of attack are considered. Ant nest formicary pitting copper micro-tunnels organic acids formic acid heat exchangers air conditioning lubricating fluids...

... of the coupon results, organic acids is concluded to be the most likely cause of corrosion of the flash tanks. corrosion corrosion tests flash tanks carbon steel stainless steel titanium organic acids inorganic acids INTRODUCTION As mills move towards modified variations of kraft cooking in an effort...