Recycling of high temperature steam condensed water from petroleum refinery by thermostable PPESK ultrafiltration membrane

Chemical Engineering Journal, Volume 219, 1 March 2013, Pages 419–428
Recycling of high temperature steam condensed water from petroleum refinery by thermostable PPESK ultrafiltration membrane
Shanshan Zhao (a), Peng Wang (a), Ce Wang (a), James L. Langer (b), Gulizhaer Abulikemu (a), Xin Sun (a)
a State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China
b Serionix, Inc., 60 Hazelwood Dr., Champaign, IL 61820, United States
Abstract
Reports a study of the purification and reclaiming of synthetic and industrial high temperature condensed water containing excess oil and iron using thermostable poly(phthalazine ether sulfone ketone) (PPESK) ultrafiltration membranes. Results reveal that operation parameters such as transmembrane pressure, temperature and pH of feed solution, initial oil and iron concentration each play important roles in the permeate flux and oil/iron removal efficiencies.
Membrane performance is nearly fully recovered after washing with a combination of NaOH and ethanol. High temperature condensed water from Daqing petroleum refinery can be consecutively purified using a PPESK ultrafiltration membrane. The turbidity of the solutions is almost completely removed. UF process is a promising alternative to existing technology in the Daqing petroleum refinery in terms of cost and environmental protection as well as energy recovery.
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