scholarly journals Carbon deposition mechanism of molten salt cleaning and optimization of multicomponent molten salt formula for remanufacturing

2021 ◽  
Vol 104 (3) ◽  
pp. 003685042110310
Author(s):  
Shuo Zhang ◽  
Shanguo Zhang ◽  
Jianyong Li ◽  
Jianfeng Li ◽  
Xin Zhou ◽  
...  
Keyword(s):  
Molten Salt ◽  
Adsorption Mechanism ◽  
Carbon Deposition ◽  
Salt Bath ◽  
Storage Medium ◽  
Optimal Process ◽  
Deposition Mechanism ◽  
Low Viscosity ◽  
Key Factor ◽  
New Formula

In remanufacturing engineering, cleaning is the key factor for subsequent blank inspection and parts repair. Molten salt has the characteristics of low viscosity, good fluidity, and strong chemical stability. Salt bath cleaning can be comprehensively applied to remove various organic pollutants. Molten salt has the function of self-cleaning. The dirt in the cleaning pool can be decomposed and reused. Moreover, the waste molten salt is massive, and the waste residue is easy to treat. The formation and adsorption mechanism of carbon deposition was explored, and the formation mechanism of carbon deposition was verified by experiments. Then, the existing formula was improved by mixing experiment and compared with the current cleaning method; the cleaning effect was excellent. A new molten salt formula is proposed on the basis of the research on solar thermal storage medium. The composition percentage and the optimal process parameters of the new molten salt formula were determined on the basis of the experimental design of mixture. The cleaning effect of the new formula is good.

Study on Extracting Potassium from Potassium Feldspar with Molten Salt Leaching Method

2012 ◽  
Vol 524-527 ◽  
pp. 1078-1081
Author(s):  
Jian Guo Song ◽  
Xin Zhi Wang ◽  
Shao Dan Xiao ◽  
Wei Liu
Keyword(s):  
Reaction Time ◽  
Molten Salt ◽  
Potassium Feldspar ◽  
Process Conditions ◽  
Temperature Reaction ◽  
Optimal Process ◽  
Potash Feldspar ◽  
Salt Leaching ◽  
Effects Of Temperature

This article aims to study the technology of extracting potassium from potassium feldspar with molten salt leaching method and to analyze the effects of temperature, reaction time and other factors on extracting potassium, concluding the optimal process conditions of extracting potassium with molten leaching method from potash feldspar.

Anti-carbon deposition mechanism of H2O on nickel-based anode of SOFC: A ReaxFF molecular modelling

2020 ◽  
Vol 45 (56) ◽  
pp. 32423-32432
Author(s):  
Sheng Wu ◽  
Xintong Chen ◽  
Yunzhuo Jiang ◽  
Guanlun Guo ◽  
Bin Huang ◽  
...  
Keyword(s):  
Molecular Modelling ◽  
Carbon Deposition ◽  
Deposition Mechanism

New insights into carbon deposition mechanism of nickel/yttrium-stabilized zirconia cermet from methane by in situ investigation

2019 ◽  
Vol 256 ◽  
pp. 113910 ◽  
Author(s):  
Fangyong Yu ◽  
Jie Xiao ◽  
Yapeng Zhang ◽  
Weizi Cai ◽  
Yongmin Xie ◽  
...  
Keyword(s):  
Carbon Deposition ◽  
Stabilized Zirconia ◽  
Deposition Mechanism ◽  
In Situ Investigation ◽  
Zirconia Cermet

Research on the Molten Nitrate Salt Thermal Properties Based on Solar Thermal Utilization

2014 ◽  
Vol 809-810 ◽  
pp. 787-792
Author(s):  
Yang Yang ◽  
Xiang Chun Liu ◽  
Xue Li Feng ◽  
Kai Xuan Zhou ◽  
Chen Guang Zuo
Keyword(s):  
Molten Salt ◽  
Operating Temperature ◽  
Storage Medium ◽  
Solar Power Generation ◽  
Comprehensive Performance ◽  
Temperature Heat ◽  
Weight Method ◽  
Molten Salt System ◽  
Thermal Physical Properties ◽  
Operating Temperature Range

The thermal physical properties, thermal stability and corrosion resistance of the ternary nitrate salts 55%NaNO3-35% KNO3-10% LiNO3 have been studied by the thermal analysis TG-DSC, weight method and so on. The results show that the melting point of mixed molten salt is 380 °C and the maximum operating temperature is 750 °C. Compared with the binary system, this molten salt system has a higher operating temperature upper limit and a wider operating temperature range of 400 ~ 750 °C, which could meet the temperature requirement of solar power generation and be a solar high-temperature heat transfer and thermal storage medium material of better comprehensive performance.

Transfer and Storage of Molten Salt for the Pyroprocessing of Used Nuclear Fuel

2014 ◽  
Author(s):  
Matthew C. Morrison ◽  
Kenneth J. Bateman
Keyword(s):  
Molten Salt ◽  
National Laboratory ◽  
Salt Bath ◽  
Vacuum Pump ◽  
Material Surface ◽  
Temperature Threshold ◽  
Used Nuclear Fuel ◽  
Cooling Mechanism ◽  
Cooling Coil ◽  
And Storage

The transfer and storage of molten salts are being examined to support electrorefining operations at the Idaho National Laboratory. Two important factors that will need to be considered when removing molten salt from either of the two electrorefiners are (1) how to remove salt in a safe and timely manner and (2) how to store significant amounts of electrorefiner salt. A Vacuum Induced Salt Transfer and Storage (VISTAS) system is being evaluated to address these two important factors. This process draws a vacuum in a container through the use of a venturi vacuum pump. The end of a heated drawtube is inserted into the molten salt bath and the molten salt is pulled into the container. A redundant level switch triggered both by the thermal conductivity of the salt and a preset temperature threshold then activates a solenoid, which turns off the argon supply to the venturi vacuum pump, stopping the flow of molten salt. A cooling coil is incorporated into the salt transfer equipment design as a failsafe if the level switch was to fail. A full-scale version of the conceptual design (43 kg capacity) was fabricated to test the vacuum draw salt withdrawal method in an inert argon atmosphere glovebox. In addition, a custom molten salt furnace was designed and fabricated within the glovebox to represent the actual size of an electrorefiner port. Initial testing of the VISTAS system was very successful. The salt was transferred at a consistent rate and the level switch reliably stopped flow. Because the system has a failsafe cooling mechanism, it is considered to have low risk of a salt spill. The container was found to improve storage density, reduce the diffusion of moisture, and reduce material surface area when compared to current options. This system appears to be well suited for this application and further development is recommended.

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