ES296062A1 - Procedure for the preparation of wood chemistry (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the preparation of wood chemistry (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES296062A1 ES296062A1 ES0296062A ES296062A ES296062A1 ES 296062 A1 ES296062 A1 ES 296062A1 ES 0296062 A ES0296062 A ES 0296062A ES 296062 A ES296062 A ES 296062A ES 296062 A1 ES296062 A1 ES 296062A1
- Authority
- ES
- Spain
- Prior art keywords
- digestion
- cooking
- translation
- wood
- preparation
- 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
- Paper (AREA)
Abstract
Process for the preparation of chemical pulps of wood, characterized in that from the wood, and similar cellulosic fiber materials, with high content of cellulose and low content of pentosana, as well as low alkali solubilities, said cellulosic fiber materials are submitted to a prehydrolysis process without delignification or sulfonation under heat and pressure with an aqueous hydrolyzing liquor, carrying out a preliminary hydrolysis of said cellulose fibers substantially in the absence of de-sulfification and sulfonation thereof; then subjecting said prehydrolyzed fibrous material to a cooking and digestion process under heat and pressure and in the presence of an aqueous liquor intended for that purpose, comprising an alkaline sulfite solution as the main cooking and digestion component and an alkaline salt belonging to the group of sulfides and hydroxides and carbonates, and mixtures thereof; perform the delignification and reduction of said content of pentosana in said process of cooking and digestion, and separate said fibrous material thus treated from the aforementioned processes of prehydrolysis, cooking and digestion, as such high purity chemical pulp, in the form of pulp watery (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0296062A ES296062A1 (en) | 1964-02-04 | 1964-02-04 | Procedure for the preparation of wood chemistry (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0296062A ES296062A1 (en) | 1964-02-04 | 1964-02-04 | Procedure for the preparation of wood chemistry (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES296062A1 true ES296062A1 (en) | 1964-04-01 |
Family
ID=34563401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0296062A Expired ES296062A1 (en) | 1964-02-04 | 1964-02-04 | Procedure for the preparation of wood chemistry (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES296062A1 (en) |
-
1964
- 1964-02-04 ES ES0296062A patent/ES296062A1/en not_active Expired
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