Economical feasibility of zeolite membranes for industrial scale separations of aromatic hydrocarbons

MFI zeolite membranes from a- and randomly oriented monolayers

“…Despite the significant progress in reproducibly controlling microstructure (Jiang et al, 2004) and improving separation performance (Hedlund et al, 2002;Lai et al, 2003), zeolite membrane technology has had limited commercial impact up to now because the reproduction of ultra-thin and defect-free zeolite membranes on a large scale is difficult (McLeary and Jansen, 2004). Although some of the initial worries regarding flux limitations prohibiting commercial use have been addressed (Meindersma and de Haan, 2002), major concerns remain regarding scale up and manufacturing costs (Coronas and Santamaria, 2004;Caro et al, 2005;.…”

Technical and economical evaluation of a zeolite membrane based heptane hydroisomerization process

“…The vapour pressure of 8.0 × 10 5 and 9.8 × 10 5 Pa for 2,3-DMP and 2,4-DMP were used, respectively, at the operation temperature of 458 K. The solution of the equations yields a membrane area of about 20,000 m 2 . Meindersma and de Haan [18] in their work on aromatic compounds separation using zeolite membranes estimated membrane areas ranging from 60,800 to 136,500 m 2 depending on the purity requirement. A feed of 300 metric tonne per hour was used in their work, which is about six times higher than the amount of feed sent to the membrane unit of the present work.…”

Modified polydimethylsiloxane/polystyrene blended IPN pervaporation membrane for ethanol/water separation

“…In recent years pervaporation separation, has emerged as relatively simple alternatives to greatly water/organic and organic/water separation applications 2. Specifically there have been growing research interest in the application of pervaporation separation process with considerable innovative possibilities in the area of biotechnology.…”

“…Specifically there have been growing research interest in the application of pervaporation separation process with considerable innovative possibilities in the area of biotechnology. Particularly, the combination of bioreactor and pervaporation membrane has potential in the longer term as an alternative to conventional batch processes 2, 3. However, a major difficulty limits pervaporation commercialization, namely, the deficiency of proper membrane materials for this application 4.…”