Study of the interactions of molten sodium nitrate-potassium nitrate 50 mol % mixture with water vapor and carbon dioxide in air. Final report, June 2, 1980-June 30, 1981

White, S. H.; Twardoch, U.M.

doi:10.2172/5194427

Cited by 2 publications

(2 citation statements)

References 33 publications

(57 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentration of carbonate (see Figure 10b) increased steadily in the high temperature tests due to the absorption of carbon dioxide from the air bubbled through the melts (Note: a straightforward calculation indicated that the amount of carbon available from the alloys was insufficient to account for any appreciable concentration of carbonate). Carbon dioxide is a Lux-Flood acid and may be absorbed directly by these basic melts, or it may form carbonate by reducing nitrate [21]. The alkalinity of the melts was entirely due to the accumulation of carbonate; no free oxide was detected.…”

Section: Salt Compositionmentioning

confidence: 99%

Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates

Goods¹,

Bradshaw

Prairie³

et al. 1994

View full text Add to dashboard Cite

The isothermal corrosion behavior of two stainless steels and carbon steel in mixtures of NaNO3 and KNO3 has been evaluated to determine if the impurities found in commodity grades of alkali nitrates aggravate corrosivity as applicable to an advanced solar thermal energy system. Corrosion tests were conducted for approximately 7000 hours with Types 304 and 316 stainless steels at 570°C and A36 carbon steel at 316°C in seven mixtures of NaNO3 and KNO3 containing variations in impurity concentrations. Corrosion tests were also conducted in a ternary mixture of NaNO3, KNO3, and Ca(NO3)2. Corrosion rates were determined by descaled weight losses while oxidation products were examined by scanning electron microscopy, electron microprobe analysis, and X-ray diffraction. The nitrate mixtures were periodically analyzed for changes in impurity concentrations and for soluble corrosion products.

show abstract

Section: Salt Compositionmentioning

confidence: 99%

Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates

Goods¹,

Bradshaw

Prairie³

et al. 1994

View full text Add to dashboard Cite

show abstract

“…In the following, a potential reaction mechanism is suggested to explain the outcome of the experiments purged with NO 2 . NO 2 gas is known to react with the nitrite ion and form nitrate according to the following reaction in Equation ( 6) [30].…”

Section: Temp [°C] 𝐏 𝐎 𝟐 [Atm]mentioning

confidence: 99%

Solar Salt above 600 °C: Impact of Experimental Design on Thermodynamic Stability Results

et al. 2023

View full text Add to dashboard Cite

Thermal energy storage (TES) based on molten salts has been identified as a key player in the transition from fossil fuels to renewable energy sources. Solar Salt, a mixture of NaNO3 (60 wt%) and KNO3 (40 wt%), is currently the most advanced heat transfer and storage material used in concentrating solar power (CSP) plants. Here, it is utilized to produce electricity via a Rankine cycle, with steam temperatures reaching 550 °C. The goal of this study is to increase the operating temperature of solar salt to over 600 °C, allowing it to be adapted for use in high-temperature Rankine cycles with steam temperatures greater than 600 °C. Yet, this goal is impaired by the lack of available thermodynamic data given the salt’s complex high-temperature decomposition and corrosion chemistry. The study explores the thermodynamics of the decomposition reactions in solar salt, with a focus on suppressing decomposition into corrosive oxide ions up to a temperature of 620 °C. The results provide a new understanding of the stabilization of solar salt at previously unexplored temperatures with effective utilization of gas management techniques.

show abstract

Study of the interactions of molten sodium nitrate-potassium nitrate 50 mol % mixture with water vapor and carbon dioxide in air. Final report, June 2, 1980-June 30, 1981

Cited by 2 publications

References 33 publications

Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates

Corrosion of stainless and carbon steels in molten mixtures of industrial nitrates

Solar Salt above 600 °C: Impact of Experimental Design on Thermodynamic Stability Results

Contact Info

Product

Resources

About