Indexed by:
期刊论文
First Author:
Lu, Dapeng
Correspondence Author:
Jiang, XB (reprint author), Dalian Univ Technol, Res & Dev Ctr Membrane Sci & Technol, State Key Lab Fine Chem, Sch Chem Engn, Dalian 116024, Liaoning, Peoples R China.
Co-author:
Li, Pan,Xiao, Wu,He, Gaohong,Jiang, Xiaobin
Date of Publication:
2017-06-01
Journal:
AICHE JOURNAL
Included Journals:
SCIE、EI
Document Type:
J
Volume:
63
Issue:
6
Page Number:
2187-2197
ISSN No.:
0001-1541
Key Words:
crystallization; membrane separations; nucleation; process control;
simulation; process
Abstract:
Membrane distillation crystallization (MDC) was introduced and investigated for the simultaneous treatment of saline organic wastewater generated from oil extraction, in this article. The developed process model of MDC for the investigated ternary system was validated by the experiments with good agreement. Under the tested feed ethylene glycol (EG) composition and operation conditions, the highly concentrated EG (residual side, recovery ratio>98.7%), pure water (permeate side, purity>99%), pure crystals with narrow crystal-size distribution, and desired morphology were simultaneously manufactured. By this simultaneous recovery of EG and H2O in the feed flow, the overall separation efficiency was enhanced. The impact factors of the crystal properties during MDC were also revealed by comprehensive analysis. Moreover, the diverse metastable zone width and crystal morphology obtained in different feed EG composition indicated the change of the nucleation barrier and the kinetic crystallization control mechanism. (c) 2016 American Institute of Chemical Engineers AIChE J, 63: 2187-2197, 2017
Translation or Not:
no
