Banca de QUALIFICAÇÃO: DEBORAH CORDEIRO DE ANDRADE

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : DEBORAH CORDEIRO DE ANDRADE
DATA : 15/12/2017
HORA: 14:00
LOCAL: AUDITÓRIO DO NUPEG
TÍTULO:

"THERMIDYNAMIC ANALYSIS OF AQUEOUS MIXTURES CONTAINIG CARBONATE SALTS, CHLORIDE, MONOETHYLENEGLYCOL AND CO2"

 

PALAVRAS-CHAVES:

Solubility, Carbonate Salts, Gas Hydrates, Solvent Regeneration.

PÁGINAS: 60
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:

The oil industry is constantly facing problems related to oil exploration. As an alternative to petroleum production, a natural gas exploration is gaining prominence in the petrochemical industry. During its production, fouling may be formed as, for example, gas hydrates, once the water produced has a large amount of dissolved salts, thus blocking a passage of the fluid through the pipeline and also causing a corrosion of the production tubes. This occurs with changes in the temperature and pressure of the circulating fluid. As a way of solving this problem, studies and other approaches of finding methods to inhibit the hydrate formation, besides obtaining precipitation data of the constituent salts. Monoethyleneglycol (MEG) is being extensively studied and tested because of its characteristics of high hydrophilicity, low toxicity, low viscosity, low solubility in liquid hydrocarbons and high solubility in salts are advantageous for the process. The expected result occurs by connecting the MEG with free water molecules, thereby diverting a characteristic gas hydrate formation curve. In addition, its contribution can be easily realized by this compound, possibly lower volatility than water, which makes the process more economically and environmentally viable. The objective of this work is to study the characteristics and properties of aqueous solutions of carbonate salts such as calcium, strontium and iron, and its behavior with an addition of MEG and sodium chloride in an atmosphere of carbon dioxide, by partial pressure or by bubbling, varying the temperature from 5 ° C to 50 ° C. The experimental data were determined by the modified analytical method specifically developed for systems with carbon salts, sodium chloride and bubbling of carbon dioxide. A thermodynamic approach was applied in phase and chemical equilibria. In this modeling it was possible to quantify the effects of the addition of MEG, sodium chloride and carbon dioxide as well as the temperature on the solubility of the carbonate salts under study.

 

MEMBROS DA BANCA:
Interno - 1543286 - CAMILA GAMBINI PEREIRA
Externo à Instituição - DANNIELLE JANAINNE DA SILVA - UFRN
Presidente - 1149554 - OSVALDO CHIAVONE FILHO