AT87808B - Process for the production of high percentage sulphite pulp. - Google Patents
Process for the production of high percentage sulphite pulp.Info
- Publication number
- AT87808B AT87808B AT87808DA AT87808B AT 87808 B AT87808 B AT 87808B AT 87808D A AT87808D A AT 87808DA AT 87808 B AT87808 B AT 87808B
- Authority
- AT
- Austria
- Prior art keywords
- production
- high percentage
- sulphite pulp
- sulphite
- pulp
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- SSARFGKMOUFOGC-UHFFFAOYSA-J S([O-])(O)=O.[Mg+2].[Ca+2].S([O-])(O)=O.S([O-])(O)=O.S([O-])(O)=O Chemical compound S([O-])(O)=O.[Mg+2].[Ca+2].S([O-])(O)=O.S([O-])(O)=O.S([O-])(O)=O SSARFGKMOUFOGC-UHFFFAOYSA-J 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Paper (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Gewinnung von hochprozentigem Sulfitzellstoff.
EMI1.1
<Desc/Clms Page number 2>
Die Dauer der Kochung kann bei dem neuen Verfahren auf etwa zwei Drittel bis zur Hälfte der sonst nötigen Zeit eingeschränkt werden. Die Kontrolle der Kochung und der Ent-' fernung der gelösten Stoffe kann hierbei in einfachster Weise geschehen.
Der Verlauf des Lösungsvorganges kann sowohl durch Verfolgung der Abnahme des Gehaltes der Kochlauge an schwefliger Säure als auch an entnommenen Zellstoffproben und Prüfung ihres Gehaltes an x-Zellulose leicht festgestellt werden.
<Desc / Clms Page number 1>
Process for the production of high percentage sulphite pulp.
EMI1.1
<Desc / Clms Page number 2>
With the new method, the duration of cooking can be limited to around two thirds to half of the time otherwise required. The control of the boiling and the removal of the dissolved substances can be done in the simplest way.
The course of the dissolution process can easily be determined by following the decrease in the sulphurous acid content of the cooking liquor as well as by taking cellulose samples and checking their content of x-cellulose.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87808T | 1920-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT87808B true AT87808B (en) | 1922-03-27 |
Family
ID=3608454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT87808D AT87808B (en) | 1920-08-04 | 1920-08-04 | Process for the production of high percentage sulphite pulp. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT87808B (en) |
-
1920
- 1920-08-04 AT AT87808D patent/AT87808B/en active
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