Supercritical Water Oxidation in a Pilot Plant of Nitrogenous Compounds:  2-Propanol Mixtures in the Temperature Range 500−750 °C

2000 ◽  
Vol 39 (10) ◽  
pp. 3707-3716 ◽  
Author(s):  
M. J. Cocero ◽  
E. Alonso ◽  
R. Torío ◽  
D. Vallelado ◽  
F. Fdz-Polanco
Keyword(s):  
Supercritical Water ◽  
Water Oxidation ◽  
Pilot Plant ◽  
Supercritical Water Oxidation ◽  
Nitrogenous Compounds ◽  
Temperature Range

Simulation of Supercritical Water Oxidation with Air at Pilot Plant Scale

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Belén García Jarana ◽  
Jezabel Sánchez Oneto ◽  
Juan Ramón Portela Miguélez ◽  
Enrique Nebot Sanz ◽  
Enrique J. Martínez de la Ossa
Keyword(s):  
Kinetic Parameters ◽  
Supercritical Water ◽  
Water Oxidation ◽  
Pilot Plant ◽  
Reaction Kinetic ◽  
Pure Water ◽  
Kinetic Equations ◽  
Pilot Scale ◽  
Laboratory Scale ◽  
Supercritical Water Oxidation

Supercritical Water Oxidation (SCWO) processes have been studied by numerous researchers. The effectiveness of this approach to treat a wide variety of wastes has been proved and the kinetics involved in some cases have been described. Phenol is commonly present in industrial wastewaters and it is extremely toxic. Hence, phenol is a model pollutant that has been the subject of numerous studies by SCWO on a laboratory scale. In this work, a pilot-scale SCWO system has been used to compare experimental and predicted conversions in the SCWO of phenol, using the reaction kinetic equations obtained at the laboratory scale. In this context, “PROSIM PLUS” software was employed to develop a simulator for the pilot plant facility, with the reaction kinetic parameters adjusted to represent the experimental data. In this study it was necessary to determine the thermal losses between the experimental reactor and its surroundings. These thermal losses were obtained from tests with pure water and oxidant streams in the absence of chemical reaction. An equation that predicted the effect of flow rate and temperature on the thermal losses was used. Experimental oxidation tests were conducted with initial temperature in the range 380 to 425 ºC, at 250 bar and phenol concentrations ranging from 1 to 12 g/l. Good agreement in the simulation was obtained by adjusting the kinetic parameters within their confidence range. This simulator was used to optimize the SCWO of phenol solutions in the pilot plant facility.

CO2-Based Thermometry of Supercritical Water Oxidation

1991 ◽  
Vol 45 (10) ◽  
pp. 1733-1738 ◽  
Author(s):  
Michael S. Brown ◽  
Richard R. Steeper
Keyword(s):  
Supercritical Water ◽  
Water Oxidation ◽  
Water Environment ◽  
Fermi Resonance ◽  
Supercritical Water Oxidation ◽  
Measured Temperature ◽  
Fluid Temperature ◽  
Temperature Range ◽  
Integrated Intensity ◽  
Hot Band

We have demonstrated the suitability of CO2 Raman spectra as a thermometry probe of the fluid mixtures encountered in supercritical water oxidation. Measured temperature accuracies of ±6% are presented. Measurements were made of the v1 2 v2 Fermi resonance features of CO2 in a supercritical water environment. Over the temperature range of interest to researchers of supercritical water oxidation, ∼400–650°C, hot bands appear in the Raman spectrum of CO2 with sufficient spectral intensity to serve as a convenient measure of the fluid temperature. We have analyzed these hot bands by taking the ratio of their integrated intensity with the integrated intensity of the fundamental. Over the temperature range of 390 to 540°C, the intensity ratio of the first pure hot band feature to the fundamental of v1 shows a very nearly linear dependence on temperature. The experimental ratio measurements are well explained by standard Raman theory if the Fermi resonance is accounted for. As discussed, the CO2 spectral line shape is affected by the high pressure ( P > 22.1 MPa) used in supercritical work, but these changes do not affect the extraction of a fluid temperature from the spectra.

scholarly journals Supercritical water oxidation of colored smoke, dye, and pyrotechnic compositions. Final report: Pilot plant conceptual design

1993 ◽  
Author(s):  
C.A. LaJeunesse ◽  
Jennifer P. Chan ◽  
T.N. Raber ◽  
D.C. Macmillan ◽  
S.F. Rice ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Supercritical Water ◽  
Water Oxidation ◽  
Pilot Plant ◽  
Final Report ◽  
Supercritical Water Oxidation ◽  
Pyrotechnic Compositions

Supercritical Water Oxidation of Oily Wastes at Pilot Plant: Simulation for Energy Recovery

2011 ◽  
Vol 50 (2) ◽  
pp. 775-784 ◽  
Author(s):  
Francisco Jimenez-Espadafor ◽  
Juan R. Portela ◽  
Violeta Vadillo ◽  
Jezabel Sánchez-Oneto ◽  
José A. Becerra Villanueva ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Water Oxidation ◽  
Pilot Plant ◽  
Energy Recovery ◽  
Supercritical Water Oxidation ◽  
Plant Simulation

Simulation of Real Wastewater Supercritical Water Oxidation at High Concentration on a Pilot Plant Scale

2011 ◽  
Vol 50 (22) ◽  
pp. 12512-12520 ◽  
Author(s):  
Violeta Vadillo ◽  
M. Belén García-Jarana ◽  
Jezabel Sánchez-Oneto ◽  
Juan R. Portela ◽  
Enrique J. Martínez de la Ossa
Keyword(s):  
Supercritical Water ◽  
Water Oxidation ◽  
Pilot Plant ◽  
Supercritical Water Oxidation ◽  
High Concentration ◽  
Pilot Plant Scale ◽  
Real Wastewater
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