Efficiency Assessment of Using Flammable Compounds from Water Treatment and Methanol Production Waste for Plasma Synthesis of Iron-Containing Pigments

This article describes the possibility of applying the low-temperature plasma for obtaining iron-containing pigments from water purification and flammable methanol production waste. In this paper were calculated combustion parameters of water-saltorganic compositions (WSOC) with different consists. Authors determined the modes of energy- efficient processing of the previously mentioned waste in an air plasma. Having considered the obtained results there were carried out experiments with flammable dispersed water-saltorganic compositions on laboratory plasma stand. All the experimental results are confirmed by calculations

Model of Reactor for Plasma Treatment of Dispersed Water-organic Nitrate Solutions of Metals

The paper proposes a mathematical model of the reactor, which describes the process of treatment of dispersed water-organic nitrate solutions of metals at air-plasma flow temperatures more than 1500 K. Regularities and a quantitative comparison were made to show the effect of the initial values of the air-plasma flow parameters (temperature, velocity) and the WONS droplet parameters (size, velocity) on the rate of their evaporation in the reactor. Process conditions were established that ensure a high evaporation rate of dispersed solutions in the air- plasma flow

Study of Plasmachemical Synthesis of Fuel Compositions for Dispersion Nuclear Fuel

The paper presents the results of studies of the plasmachemical synthesis of fissile material (uranium dioxide) and the matrix (yttria) for dispersion nuclear fuel. For this purpose, simulated water-organic solutions of zirconyl nitrate, yttrium nitrate and organic component (acetone) have been used. For the first time, the compositions of such solutions and the modes of their processing, which ensure the synthesis of nanosized oxide powders in air plasma, were determined

Plasmachemical synthesis and evaluation of the thermal conductivity of metal-oxide compounds for prospective nuclear fuel

The article considers the possibility for direct plasma-chemical synthesis of metal-oxide compounds, containing inclusions of fissile material`s dioxide (uranium) and a matrix of beryllium oxide with a high thermal conductivity and a low cross section for the resonant absorption of neutrons from the optimal in composition water-organic nitrate solutions, including the organic component (alcohols, ketones). The results of calculations of the optimal compositions of such solutions are presented and the regimes of their plasma treatment providing direct plasma-chemical synthesis in the air plasma of metal-oxide compounds of the required composition are determined. The results of calculations of the thermal conductivity coefficients of these compositions, consisting of a continuous component (matrix), in which the inclusions from ceramics in the form of uranium dioxide are placed, are presented. The obtained calculated data are compared with the experimental results

Plasmachemical synthesis and evaluation of the thermal conductivity of metal-oxide compounds for prospective nuclear fuel

The article considers the possibility for direct plasma-chemical synthesis of metal-oxide compounds, containing inclusions of fissile material`s dioxide (uranium) and a matrix of beryllium oxide with a high thermal conductivity and a low cross section for the resonant absorption of neutrons from the optimal in composition water-organic nitrate solutions, including the organic component (alcohols, ketones). The results of calculations of the optimal compositions of such solutions are presented and the regimes of their plasma treatment providing direct plasma-chemical synthesis in the air plasma of metal-oxide compounds of the required composition are determined. The results of calculations of the thermal conductivity coefficients of these compositions, consisting of a continuous component (matrix), in which the inclusions from ceramics in the form of uranium dioxide are placed, are presented. The obtained calculated data are compared with the experimental results

Plasmachemical synthesis and the assessment of the thermal conductivity of fuel compounds “UO2–MgO”

The process of plasma-chemical synthesis from water-organic nitrate solutions of uranium and magnesium of fuel compositions including a matrix of magnesium oxide with a high thermal conductivity and low neutron absorption is investigated. The compositions of the solutions, including acetone (ethanol), as well as the regimes that providing the direct synthesis of "UO2-MgO" fuel compositions of different concentrations in air plasma are determined. The calculation of their thermal conductivity and comparison with experimental data are presented