Sodium alginate polymer as a kinetic inhibitor of methane hydrate formation

Journal of Materials Research and Technology

Isabella Leite Ferraz¹  Dênis Fernandes do Nascimento²  Letícia Vitorazi³  José Adilson de Castro³  Bárbara Louise Lemos Drumond Silva³ 

[1] Laboratório de Fluidos e Ciências Térmicas, Departamento de Engenharia Mecânica da Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Universidade Federal Fluminense, Avenida dos Trabalhadores, 420, Volta Redonda, RJ, CEP 27225-125, Brazil;Programa de Pós-graduação em Engenharia Metalúrgica, EEIMVR, Universidade Federal Fluminense, Avenida dos Trabalhadores, 420, Volta Redonda, RJ, CEP 27225-125, Brazil;Laboratório de Materiais Poliméricos, Departamento de Engenharia Metalúrgica e Materiais da Escola de Engenharia Industrial Metalúrgica de Volta Redonda, Universidade Federal Fluminense, Avenida dos Trabalhadores, 420, Volta Redonda, RJ, CEP 27225-125, Brazil;

关键词: Gas hydrate;    Kinetic inhibitor;    Natural polymer;    Sodium alginate;   

DOI  :  

来源: DOAJ

【 摘 要 】

Gas hydrates are ice-like compounds that can affect the flow assurance in oil and gas pipelines due to their structural characteristics. Alginate is a polysaccharide naturally derived from the brown seaweed Phaeophyceae and is produced as an extracellular material by bacteria, such as Pseudomonas and Azotobacter. The novelty of using alginate as a natural gas hydrate inhibitor was investigated in this paper. To predict the amount of methane hydrates that formed over time, a modified Johnson−Mehl−Avrami−Kolmogorov model (JMAK) was applied. It is noted that for the studied polymer, lower concentrations of 0.1% (wt./vol) showed better inhibitory potential, and acidic pH was favorable to this behavior. The system that behaved best against methane gas hydrate inhibition was 0.1% (wt./vol) pH 4. Alginate showed a good inhibitory capacity. The JMAK model was found to be suitable for describing the crystallization kinetics of the studied systems. The kinetic parameters were calculated for this model. This study describes a new way to explore the potential of alginate as a kinetic inhibitor by delaying the formation of hydrates.

【 授权许可】

Unknown