Use of 1-butyl-3-methylimidazolium-based ionic liquids as methane hydrate inhibitors at high pressure conditions

Autor(es)

Sanches de Menezes, Davi Eber ^[1] ; Pessoa Filho, Pedro de Alcantara ^[1] ; Robustillo Fuentes, Maria Dolores ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Engn Sch, Dept Chem Engn, Av Prof Luciano Gualberto 380, BR-05508010 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Chemical Engineering Science; v. 212, FEB 2 2020.
• Citações Web of Science: 0

Resumo

The performance of 1-Butyl-3-methylimidazolium chloride ({[}BMIM]{[}Cl]) and 1-Butyl-3-methyl-imidazolium bromide ({[}BMIM]{[}Br]) as methane hydrate inhibitors is evaluated in this work. New hydrate dissociation data were obtained through high-pressure calorimetry for aqueous solutions with inhibitor mole fractions of 1.0%, 5.0%, 10.0%, and 15.0% and pressures from 9.6 to 100 MPa. Challenging situations from the experimental point of view were also explored. These ionic liquids are known to be both kinetic and thermodynamic inhibitors, but they promote hydrate growth at mole fractions of 1% and 5% in the pressure range studied. The effectiveness of these ionic liquids as thermodynamic inhibitors at high pressures is compared to that of methanol, a commercial inhibitor commonly used in the oil and gas industry. {[}BMIM]{[}Cl] is more effective than {[}BMIM]{[}Br] and methanol, considering equimolar aqueous solutions, even though methanol is more effective for solutions with the same mass fraction. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 17/01351-2 - Estudo estrutural de hidratos de gás a elevadas pressões
• Beneficiário: Davi Éber Sanches de Menezes
• Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto
• Processo FAPESP: 15/23148-9 - Estudo termodinâmico da formação e dissociação de hidratos de gás
• Beneficiário: Davi Éber Sanches de Menezes
• Linha de fomento: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 14/02140-7 - Estudo da formação e dissociação de hidratos de gás
• Beneficiário: Maria Dolores Robustillo Fuentes
• Linha de fomento: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 14/25740-0 - Estudo da formação e dissociação de hidratos de gás em altas pressões
• Beneficiário: Maria Dolores Robustillo Fuentes
• Linha de fomento: Bolsas no Brasil - Jovens Pesquisadores