Mathematical Modeling and Optimization of Technological Schemes for Oxidation of Organics in Supercritical Water
نویسندگان
چکیده
Technological scheme for the oxidation of organic wastes in SCW has been proposed. Mathematical models of all apparatuses in the scheme (heat exchangers, chemical reactor, separator) consider specific properties of chemical processes realized in supercritical water (alteration of heat capacity, enthalpy and critical parameters of mixture with changing pressure, temperature and composition). Non-ideal thermodynamic methods have been used to calculate the properties of two-phase multi-component mixtures. Detailed numerical analysis and optimization of the proposed scheme for the oxidation of acetic acid and phenol by oxygen in SCW have been carried out.
منابع مشابه
A numerical study of supercritical water oxidation of phenol
Supercritical water oxidation has attracted attention of many researchers ever since the ideahas emerged about three decades ago as a promising technique in the waste managementindustry. Providing more details about the behavior of a supercritical water oxidation systemunder various operating conditions and extending available data can greatly assist more accurateand reliable design of such sys...
متن کاملPopulation Balance Modelling of Zirconia Nanoparticles in Supercritical Water Hydrothermal Synthesis
Like any other precipitation process, in supercritical water hydrothermal synthesis (SWHS), the need to improve product quality and minimize production cost requires understanding and optimization of Particle Size Distribution (PSD). In this work, using Population Balance Equation (PBE) containing nucleation and growth terms, the reactive precipitation of zirconia nanoparticles prepared by ...
متن کاملExperimental Determination of Hydroxyl Radical Reactivity in Supercritical Water Using Pulse Radiolysis
Complete mineralization of hazardous organic compounds to innocuous products can be achieved using supercritical water oxidation (SCWO). At typical SCWO process conditions (500 – 650 °C), free radical chemistry has been shown to be the dominant reaction path. Detailed Chemical Kinetic Mechanisms (DCKM), consisting of elementary free-radical reactions, have been used to model the oxidation of a ...
متن کاملMathematical Modeling of Adsorption Process of Ethyl Acetate Impurity of Supercritical CO2 on Activated Carbon
A mathematical model is described and applied for adsorption process of ethyl acetate from supercritical CO2 stream on activated carbon particles. This model has the ability of illustrating variation of effluent concentration towards different parameters such as flow rate, temperature and pressure. In this research, a vast area of operational conditions is experienced. Mass transfer resistance ...
متن کاملSub and Supercritical Decontamination of Oil-Based Drill Cuttings: A Review
Drill mud is a fluid which is used in oil extraction industries in order to cool and lubricate the drill bit. Due to containing numerous toxic components, it is considered as a hazardous waste which must be treated before discharging to the environment. Current separation techniques for drill cutting treatment can be categorized into three main categories of physical (dewatering), physiochemica...
متن کامل