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Treatment of high-temperature rinsing water from a degreasing plant by reverse osmosis

Jönsson, Ann-Sofi LU and Wennerbeck, J (1997) In Desalination 114(2). p.175-181
Abstract
In the manufacture of heat-exchangers, it is of great importance that the heat-exchanger plates be thoroughly cleaned before being sealed. At a Swedish heat-exchanger manufacturer, oil, grease and other impurities are removed in a washing plant consisting of three stages: a degreasing tank and two rinsing tanks. The possibility of improving the cleanliness of the heat-exchanger plates, without increasing the need for fresh water, by treating the rinsing water in a reverse osmosis (RO) plant, was studied in this investigation. A new, high-temperature-resistant, thin-film RO membrane from Osmonics-Desal was used in the experiments. The influence of a lubricant, based on a block copolymer, and an alkaline degreasing agent on the membrane... (More)
In the manufacture of heat-exchangers, it is of great importance that the heat-exchanger plates be thoroughly cleaned before being sealed. At a Swedish heat-exchanger manufacturer, oil, grease and other impurities are removed in a washing plant consisting of three stages: a degreasing tank and two rinsing tanks. The possibility of improving the cleanliness of the heat-exchanger plates, without increasing the need for fresh water, by treating the rinsing water in a reverse osmosis (RO) plant, was studied in this investigation. A new, high-temperature-resistant, thin-film RO membrane from Osmonics-Desal was used in the experiments. The influence of a lubricant, based on a block copolymer, and an alkaline degreasing agent on the membrane performance was studied. The flux reduction of a model rinsing solution with time was moderate. The flux after 500 h of continuous treatment at 65 degrees C and 4.0 MPa was 351/m(2) h, and the permeate quality fulfilled the demands of the heat-exchanger manufacturer. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
reverse osmosis, high-temperature, RO, degreasing solution
in
Desalination
volume
114
issue
2
pages
175 - 181
publisher
Elsevier
external identifiers
  • wos:000072265900008
  • scopus:0031398936
ISSN
1873-4464
DOI
10.1016/S0011-9164(98)00009-5
language
English
LU publication?
yes
id
57f3035b-51a2-4f1b-8c2a-64b543208b98 (old id 3915719)
date added to LUP
2013-07-02 10:56:00
date last changed
2017-01-01 04:36:39
@article{57f3035b-51a2-4f1b-8c2a-64b543208b98,
  abstract     = {In the manufacture of heat-exchangers, it is of great importance that the heat-exchanger plates be thoroughly cleaned before being sealed. At a Swedish heat-exchanger manufacturer, oil, grease and other impurities are removed in a washing plant consisting of three stages: a degreasing tank and two rinsing tanks. The possibility of improving the cleanliness of the heat-exchanger plates, without increasing the need for fresh water, by treating the rinsing water in a reverse osmosis (RO) plant, was studied in this investigation. A new, high-temperature-resistant, thin-film RO membrane from Osmonics-Desal was used in the experiments. The influence of a lubricant, based on a block copolymer, and an alkaline degreasing agent on the membrane performance was studied. The flux reduction of a model rinsing solution with time was moderate. The flux after 500 h of continuous treatment at 65 degrees C and 4.0 MPa was 351/m(2) h, and the permeate quality fulfilled the demands of the heat-exchanger manufacturer.},
  author       = {Jönsson, Ann-Sofi and Wennerbeck, J},
  issn         = {1873-4464},
  keyword      = {reverse osmosis,high-temperature,RO,degreasing solution},
  language     = {eng},
  number       = {2},
  pages        = {175--181},
  publisher    = {Elsevier},
  series       = {Desalination},
  title        = {Treatment of high-temperature rinsing water from a degreasing plant by reverse osmosis},
  url          = {http://dx.doi.org/10.1016/S0011-9164(98)00009-5},
  volume       = {114},
  year         = {1997},
}