...Abstract Seawater injection is regularly used for pressure maintenance in oilfields during secondary oil recovery. Typically oxygen is removed from the seawater via a process of mechanical deaeration and oxygen scavenger is added to remove final traces. An oxidizing biocide such as hypochlorite...

... applications. Corrosion Passivation Coordinated Phosphate Alkalinity Oxygen Scavengers Reducing Agents INTRODUCTION Passivation is a corrosion process that results in a barrier of insoluble and nonporous material at the metal surface. It is a result of chemical reactions between metal ions and other...

... (PRCI), in which methods for prevention of internal SCC in ethanol pipelines were evaluated. These methods included the addition of inhibitors and oxygen scavengers to the ethanol and other methods of deaeration. ethanol pipelines stress-corrosion cracking inhibitors oxygen scavengers deaeration...

...Abstract Oxygen scavenger performance is a major consideration in selecting the most favorable chemical treatment program for steam plants. In the last twenty-five years alternatives to hydrazine for oxygen removal in steam generating systems have been introduced. The paper reviews the current...

... fatigue anodic inhibitors oxygen scavengers INTRODUCTION Oxygen Pitting In reviewing laboratory failure analysis reports, a vast majority of tube failures in firetube boilers have been documented to be caused by dissolved oxygen pitting (70%), see Figure 2 . This is certainly related in many cases...

... ammonia oxygen scavengers neutralizing amines corrosion scaling guidelines boiler feedwater boiler water steam condensate water quality oil removal INTRODUCTION Today, corrosion in steam generating systems creates colossal loss for refineries, gas plants and petrochemical plants. This loss can...

... to determine their relative oxygen removal ability. Conclusions In this work, the removal potential of dissolved oxygen by nine oxygen scavengers was evaluated. From the perspective of removal rate, hydroquinone, 35% hydrazine with organic catalyst and 35% hydrazine with organometallic catalyst are three...

... a decrease in the CGR by an order of magnitude. When propionic acid was no longer added to the feedwater (Test No. 4), the CGR returned to the initial baseline value. Abstract In constant-extension-rate tests on sensitized AISI 304 stainless steel (SS) at 289°C, some organic substances (oxygen scavengers...

...* to design a test unit which simulates preboiler systems, incorporating factors such as temperature gradient, residence time, metallurgy, etc. * to study metal passivation in boiler feedwater systems in the presence/absence of oxygen scavengers * to compare oxygen scavenger performance...