PSA design for stoichiometric adjustment of bio-syngas for methanol production and co-capture of carbon dioxide

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Ana M. Ribeiro (Autor) FEUP; Santos, JC (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: Chemical Engineering Journal

Vol. 163 Nº 3

Páginas: 355-363

ISSN: 1385-8947

Editora: Elsevier

Indexação

ISI Web of Knowledge - 32 Citações

ISI Web of Science

Scopus - 43 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-003-265

DOI: 10.1016/j.cej.2010.08.015

Abstract (EN): The use of synthesis gas obtained from biomass gasification as a feed stream to methanol production appears to be an environmental attractive alternative. However, the composition of the bio-syngas is deficient in hydrogen and therefore not suitable for direct methanol synthesis. A process to adjust the syngas composition to the required stoichiometric ratio (H-2-CO2)/(CO + CO2) of 2.1 is needed. In this study a pressure swing adsorption process used to adjust the stoichiometric ratio of a bio-syngas and co-capture carbon dioxide was designed. The results show that the separation and concentration of carbon dioxide to a stream ready for capture, purity above 95%, can be accomplished at high recovery of both products - 99.7% for CO2 and 99.5% for H-2, with a power consumption of 0.841 MW (1.83 kWh kmol(CO2)(-1)). An optimized operation of the process reduces the power consumption over 30% to 0.584 MW (1.27 kWh kmolCO(2)(-1)), but with a slight decrease in products recovery - 99.6% for CO2 and 98.6% for H-2.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9