Mathematical modeling and computational simulation of gas-solid reactions in moving bed: application to the direct reduction process of iron ore

• Grant number: 19/05840-3
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: May 01, 2019
• End date: November 30, 2023
• Field of knowledge: Engineering - Chemical Engineering - Industrial Operations and Equipment for Chemical Engineering
• Principal Investigator: Roberto Guardani
• Grantee: Patrícia Metolina
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 17/50343-2 - Institutional development plan in the area of digital transformation: advanced manufacturing and smart and sustainable cities (PDIp), AP.PDIP
• Associated scholarship(s): 21/09343-4 - CFD simulation of coupled multiphysics-multiscale non-catalytic gas-solid reaction systems: application to the direct reduction of iron ore, BE.EP.DR

Abstract

Non-catalytic gas-solid heterogeneous reactions have a large importance in many industrial processes. These systems are complex because they are inherently transient, involving mass and heat transport phenomena associated with chemical reactions and structural changes of the solid over time. The heterogeneities of the gas phase flow distribution and changes in the solid morphology of these systems characterizes the complexity in multiscale. Various mathematical models reported in the literature have been based on several simplifications. For these reasons, the present study proposes the development of a more rigorous mathematical model, coupling the representation of the non-catalytic reactions between gas and solid particles with models for gas flow in moving bed. Computational Fluid Dynamics (CFD) will be used to describe the chemical and physical transformations of the direct reduction process of iron ore. This process consists of a sequence of reactions between a reducing gas and the solid iron ore pellets in moving bed reactors. The best configurations of the pellet will be investigated through structural parameters of this raw material, such as size and porosity. In order to determine the optimum process conditions, parameters such as flow rate, temperature and composition of the reducing gases will also be evaluated. The model will be validated with experimental data obtained in laboratory scale at the Technological Research Institute (IPT), as well as data from industrial plants from the literature. This research is part of the project "Institutional Development Plan in the Digital Transformation Area: Advanced Manufacturing and Intelligent and Sustainable Cities (PDIP)" of the Technological Research Institute of São Paulo (Process FAPESP 2017/50343-2), research topic: Modeling of Biophysical-Chemical Processes. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

RAMOS, BRUNO; FERREIRA, LIVIA BABETTO; PALHARIM, PRISCILA HASSE; METOLINA, PATRICIA; GUSMA, CAROLINA DE ARAUJO; TEIXEIRA, ANTONIO CARLOS SILVA COSTA. A continuous photo-Fenton-like process using persulfate salts for the degradation of acetaminophen under solar irradiation at circumneutral pH. CHEMICAL ENGINEERING JOURNAL ADVANCES, v. 14, p. 10-pg., 2023-05-15. (21/10919-8, 18/21271-6, 19/05840-3)

METOLINA, PATRICIA; RIBEIRO, TIAGO RAMOS; GUARDANI, ROBERTO. Hydrogen-based direct reduction of industrial iron ore pellets: Statistically designed experiments and computational simulation. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, v. N/A, p. 14-pg., 2022-07-02. (19/05840-3)

METOLINA, PATRICIA; DE ANDRADE, ROBERTO SILVA; RAMOS, BRUNO; GUARDANI, ROBERTO. Hydrogen direct reduction ironmaking process for zero CO2 emission: A study on the effect of particle properties changes during the multiple non-catalytic gas-solid reactions. MINERALS ENGINEERING, v. 201, p. 15-pg., 2023-10-01. (19/05840-3)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

METOLINA, Patrícia. Hydrogen direct reduction ironmaking process for zero co2 emission: a multiscale study of the non-catalytic gas-solid reactions.. 2024. Doctoral Thesis - Universidade de São Paulo (USP). Escola Politécnica (EP/BC) São Paulo.