Banca de DEFESA: GIOVANNY SILVA DE OLIVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : GIOVANNY SILVA DE OLIVEIRA
DATE: 31/08/2022
TIME: 14:30
LOCAL: Virtual
TITLE:

Glycerin usage in Chemical Looping Combustion –  Experimental and Simulation

KEY WORDS:

Chemical Looping, Glycerin, Carbon Capture and Storage, Process Simulation.

PAGES: 90
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Operações Industriais e Equipamentos para Engenharia Química
SPECIALTY: Reatores Químicos
SUMMARY:

 Greenhouse gases emissions and their consequences are one of the main environmental problems faced today. To mitigate the impacts caused by this phenomenon, Brazil seeks to reduce CO2 emissions by 43% by 2030 in order to meet the Paris Agreement. To achieve this goal, it is possible to use techniques based on the principle of Carbon Capture and Storage, such as Chemical Looping Combustion (CLC). These processes are versatile in terms of the use of fuels in the three states of matter. As the growing depreciation of glycerin in recent years, there is a need to relocate this by-product to other applications that could increase its market value, since this waste product represents about 10% of the amount of biodiesel generated. Thus, this study aims to evaluate the feasibility of glycerin on Chemical Looping Combustion and provide its process simulation. The crude glycerin solution was synthesized considering water, methanol and ethanol as the main contaminants. The experiments were carried in two sets: the first to determine the best values to oxygen-to-fuel molar ratio (ϕ), H2O/Glycerin molar ratio and Fuel Reactor Temperature (TFR) and afterwards another set of experiments was done for the contaminants (methanol and ethanol) using the best operational conditions determined by the previous set. A simulation of the CLC process was developed in the Aspen Plus® environment, verified with methane and ethanol experimental data and adjusted for glycerin. For the first set, the results revealed that the optimized conditions for the diluted glycerin in CLC was achieved at ϕ = 7, H2O/Glycerin = 0,75 e TRR = 750°C. The impurities analyses show that methanol brings disadvantages to the combustion process, while ethanol improves the combustion efficiency. The process simulation was capable to reproduce the experimental data found for glycerin with acceptable deviations. 

COMMITTEE MEMBERS:
Presidente - 1584174 - DOMINGOS FABIANO DE SANTANA SOUZA
Externo ao Programa - ***.656.434-** - CARLOS EDUARDO DE ARAÚJO PADILHA - UFRN
Externo à Instituição - FELIPE PEDRO DA COSTA GOMES - UFPE
Externo à Instituição - JUAN ALBERTO CHAVEZ RUIZ - ISI-ER