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
- 239000007788 liquid Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title abstract 2
- 239000012141 concentrate Substances 0.000 title 1
- 239000012528 membrane Substances 0.000 abstract 4
- 230000000717 retained effect Effects 0.000 abstract 2
- 238000001223 reverse osmosis Methods 0.000 abstract 2
- 238000000108 ultra-filtration Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
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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