ES416404A1 - A method to fraction and concentrate in multiple stages residual liquid of sulphite. (Machine-translation by Google Translate, not legally binding) - Google Patents
A method to fraction and concentrate in multiple stages residual liquid of sulphite. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES416404A1 ES416404A1 ES416404A ES416404A ES416404A1 ES 416404 A1 ES416404 A1 ES 416404A1 ES 416404 A ES416404 A ES 416404A ES 416404 A ES416404 A ES 416404A ES 416404 A1 ES416404 A1 ES 416404A1
- Authority
- ES
- Spain
- Prior art keywords
- fraction
- molecular weight
- translation
- legally binding
- google translate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A method for fractionating and concentrating sulfite residual liquid, which has previously been devoid of free SO2 by steam stripping, cooled and released from fibers by filtration, by means of a combination of ultrafiltration and reverse osmosis, characterized by 1) subjecting a measured amount of residual sulphite liquid to ultrafiltration by forced recirculation in a manner known per se, under certain conditions of pressure and temperature, on membranes adapted to the higher molecular weight of the fraction retained on the primary face of the membrane, a fraction which is then if a desired optimum concentration is reached, it is washed by a continuous supply of water for the separation of low molecular weight residual components, and 2) collecting the discharged filtrate on the secondary face of the membrane, to serve as a raw material for the recovery of fractions that have low molecular weight, by reverse osmosis during forced recirculation is indicated in 1), and using membranes having successively finer porosity, after which, if desired, the retained fractions are washed with water as indicated in 1). (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES416404A ES416404A1 (en) | 1973-06-28 | 1973-06-28 | A method to fraction and concentrate in multiple stages residual liquid of sulphite. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES416404A ES416404A1 (en) | 1973-06-28 | 1973-06-28 | A method to fraction and concentrate in multiple stages residual liquid of sulphite. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
Publication Number | Publication Date |
---|---|
ES416404A1 true ES416404A1 (en) | 1976-02-16 |
Family
ID=8464512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES416404A Expired ES416404A1 (en) | 1973-06-28 | 1973-06-28 | A method to fraction and concentrate in multiple stages residual liquid of sulphite. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES416404A1 (en) |
-
1973
- 1973-06-28 ES ES416404A patent/ES416404A1/en not_active Expired
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