Banca de DEFESA: EDYJANCLEIDE RODRIGUES DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : EDYJANCLEIDE RODRIGUES DA SILVA
DATE: 29/10/2022
TIME: 10:00
LOCAL: MODO REMOTO
TITLE:

Diesel B10/butanol/ethanol/methanol formulations: phase equilibrium and tests in a diesel engine

KEY WORDS:

Energy. Diesel. Alcohol. Phase equilibrium. Power curves.

PAGES: 52
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SUMMARY:

Among the main sources of energy used in Brazil, diesel oil stands out due to its wide use in road transport, locomotives, and ships. Despite its relevance to the transport sector at the national level, its contribution to the climate imbalances currently observed in the world is undeniable. In this perspective, although it is challenging to reconcile the supply of global energy needs with the preservation of the environment, the ability to reduce undesirable emissions makes diesel/alcohol blends an attractive option. Based on this premise, the present study has the general objective of developing B10/butanol/methanol (DBM) and B10/butanol/ethanol (DBE) diesel blends for use in real engines. The compositions of the formulations were determined based on the construction of equilibrium diagrams at a temperature of 25 ± 2°C. Othmer-Tobias and Hand correlations were applied to the phase equilibrium data obtained, which attested to their thermodynamic consistency. Then, the adequacy of the NRTL and UNIQUAC models in the adjustment of the experimental data was evaluated with the aid of the TML computational tool, the latter being the one that generated the lowest root of average square deviation (0.34%). The prepared mixtures were submitted to density tests (ASTM D4052 at 20, 25, and 40°C), kinematic and dynamic viscosities (ASTM D7042 40°C), corrosivity (ASTM D130 at 50°C for 3h), pour point (ASTM D97), cloud point (ASTM D2500), cold filter plugging point (ASTM D6371) and vapor pressure (ASTM D6378), as well as employed in the construction of power curves in a diesel cycle engine according to the recommendations of the test code of engines (ABNT - NBR ISO 1585). In general, all the compositions studied have characteristics that meet the ANP specifications for road use, although DBM2 has presented unsatisfactory hourly and specific consumption during combustion in a diesel engine.

COMMITTEE MEMBERS:
Interno - 1308273 - EDUARDO LINS DE BARROS NETO
Interno - 1670497 - HUMBERTO NEVES MAIA DE OLIVEIRA
Externa à Instituição - PAULA FABIANE PINHEIRO DO NASCIMENTO - UFRN
Externo à Instituição - RICARDO PAULO FONSECA MELO - UFERSA