Gas separation unit by adsorption : simulation and adsorbent characterization / Unidade de separação de gases por adsorção : simulação e caracterização do adsorvente

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Zeolites are crystalline porous materials found naturally or synthetically manufactured with high adsorbent power. The study of this material as an industrial adsorbent began in the mid 50 s. The fields of zeolite application are rather wide. Zeolites have been used as adsorbents for purification of gases and liquids, as catalysts for petroleum refinig and for synthesis of organic products. The objective of this work was to characterize a sample of zeolite X and to simulate a nitrogen adsorption pilot unit. Physical and chemical analyses were made for the characterization of this material. Its possible to conclude with characterization data that zeolite is higroscopic, similar to faujasite type, and large superficial area 593 m2 g-1. With this last analysis (BET), the model was adapted to langmuir in order to simulate the nitrogen adsorption process onto zeolite. The simulation of a gas separation unity (nitrogen and oxygen) from air was realized through PSA process (pressure-swing adsorption) using the MATLAB software. This process consists selective adsorption of gases through the porous of solid. The program showed that nitrogem adsorption process is fast with seconds of duration due to afinity of the gas for zeolite and the kind of the process involved

ASSUNTO(S)

adsorção separação (tecnologia) adsorption zeolite simulação por computador simulation separation zeolitos

ACESSO AO ARTIGO

Documentos Relacionados