Pervaporation dehydration of ethylene glycol by NaA zeolite membranes

Pervaporation technology for regeneration of diethylene glycol at Russian complex gas treatment plants with the use of ceramic membranes HybSi

“…As to pervaporation (PV), its application, to our knowledge, has never been considered as a method of regeneration of DEG at CGTP up to the present time. Until recently, the only glycol whose dehydration by PV studied in the laboratories was ethylene glycol (EG) (Feng and Huang, 1996;Guo et al, 2007;Du et al, 2008;Xu et al, 2010;Hu et al, 2012;Yu et al, 2012). However, two papers recently published reported results of DEG dehydration by PV (Akberov et al, 2014;Yim and Kong, 2013).…”

“…It is worth noting that, of all the studies described in Table 1, only studies (Jehle et al, 1995;Nik et al, 2006;Yu et al, 2012;Yim and Kong, 2013;Akberov et al, 2014) are devoted to PV dehydration of glycols by means of commercially available membranes. The remaining studies are devoted to PV dehydration of glycols by membranes developed in laboratories for purely scientific purposes.…”

Ceramic membrane synthesis based on alkali activated blast furnace slag for separation of water from ethanol

“…This process is often used for dehydration of hydrocarbons to obtain a high purity product, such as ethanol [5], isopropyl alcohol [6] and ethylene glycol [4,[7][8][9].…”

“…In this method, depending on the zeolite type, seeded supports and zeolite gels are kept 4 in autoclaves for a few hours or even a few days at specified temperatures. At the end of procedure, zeolite layers are formed on surface of the supports [19].…”

“…Pervaporation (PV) as one of the membrane processes was introduced by Kobber in 1917 [1,2]. Separation mechanism in pervaporation is solution-diffusion, compared with boiling point difference in distillation which is economically less affordable [1,3,4].…”