SU821614A1 - Method of obtaining pulp-containing semiproduct - Google Patents
Method of obtaining pulp-containing semiproduct Download PDFInfo
- Publication number
- SU821614A1 SU821614A1 SU792782131A SU2782131A SU821614A1 SU 821614 A1 SU821614 A1 SU 821614A1 SU 792782131 A SU792782131 A SU 792782131A SU 2782131 A SU2782131 A SU 2782131A SU 821614 A1 SU821614 A1 SU 821614A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cooking
- formic
- acetic acid
- carried out
- hydrogen peroxide
- Prior art date
Links
Description
3 90 С в течение 60 мин. Затем варочный раствор сливают и щепу вар т fi варочной жидкости , состо щей из 60 мл 30%-ной перекиси водорода и 240 мл 80%-ной муравьиной-кислоты в течешю 1 ч при той же температуре.3 90 C for 60 min. Then the cooking solution is drained and the chips are cooked with fi of cooking liquid consisting of 60 ml of 30% hydrogen peroxide and 240 ml of 80% formic acid for 1 hour at the same temperature.
Услови процесса и показатели Известный качества целевого продуктаспособProcess conditions and indicators Known quality of the target product method
Температура варки, °С Врем варки, чCooking temperature, ° С Cooking time, h
Расход 30%-ной перекиси водорода по отношениюConsumption of 30% hydrogen peroxide relative
Предлагаемый способThe proposed method
50-90 50-90
70-100 1-1,570-100 1-1,5
2-2,5 21614 Полученные данные по эффективности про цесса сведены в таблицу. Предлагаемый способ позвол ет снизить расход перекиси водорода и повысить выход и физико5 механические показатели целевого продукта.2-2.5 21614 The obtained data on the efficiency of the process are tabulated. The proposed method allows to reduce the consumption of hydrogen peroxide and to increase the yield and physical and mechanical properties of the target product.
Форму-л а изобретени Formula of invention
Способ получени целлюлозного полуфабриката путем варки древесной щепы муравьиной или уксусной кислотой и перекисью водорода при повыщеииой температуре, отличающийс тем, что, с целью снижени расхода варочиых реагентов при одновременном повышеини физико-механических показателей и выхода целевого продукта, варку провод т в две стадии, при этом первую стадию варкиThe method of obtaining cellulosic semi-finished product by boiling wood chips with formic or acetic acid and hydrogen peroxide at a higher temperature, characterized in that, in order to reduce the consumption of vascular reagents while increasing the physical and mechanical properties and yield of the target product, cooking is carried out in two stages, with this is the first stage of cooking
осуществл ют одной муравьиной или уксусной кислотой, а вторую стадию провод т муравь-, иной или уксусной кислотой в присутствии перекиси водорода. it is carried out with formic or acetic acid, and the second stage is carried out with formic, different or acetic acid in the presence of hydrogen peroxide.
Источники информации, прин тые во внимание при экспертизеSources of information taken into account in the examination
1.Авторское свидетельство СССР № 431277, кл. D 21 С 3/02, 1972.1. USSR author's certificate number 431277, cl. D 21 3/02, 1972.
2.Авторское свидетельство СССР по за вке № 2573365/29-12, кл. D 21 С 3/04, 1978.2. USSR author's certificate for application number 2573365 / 29-12, cl. D 21 C 3/04, 1978.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792782131A SU821614A1 (en) | 1979-06-19 | 1979-06-19 | Method of obtaining pulp-containing semiproduct |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792782131A SU821614A1 (en) | 1979-06-19 | 1979-06-19 | Method of obtaining pulp-containing semiproduct |
Publications (1)
Publication Number | Publication Date |
---|---|
SU821614A1 true SU821614A1 (en) | 1981-04-15 |
Family
ID=20834629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792782131A SU821614A1 (en) | 1979-06-19 | 1979-06-19 | Method of obtaining pulp-containing semiproduct |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU821614A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0212329A1 (en) * | 1985-08-05 | 1987-03-04 | INTEROX Société Anonyme | Process for the delignification of cellulosic materials |
US4793898A (en) * | 1985-02-22 | 1988-12-27 | Oy Keskuslaboratorio - Centrallaboratorium Ab | Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide |
DE4228171A1 (en) * | 1992-08-25 | 1994-03-03 | Kaemmerer Projekt Agentur Gmbh | Wood digestion with acetic acid with the addition of formic acid |
DE19516151A1 (en) * | 1995-05-03 | 1996-11-07 | Sven Siegle | Process for the production of a pulp from cellulosic material, the pulp itself and its use |
US6156156A (en) * | 1996-11-06 | 2000-12-05 | Chempolis Oy | Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
EP2573259A1 (en) * | 2011-09-23 | 2013-03-27 | Chempolis Oy | Pretreatment method for producing water-soluble sugars from lignocellulosic material |
-
1979
- 1979-06-19 SU SU792782131A patent/SU821614A1/en active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4793898A (en) * | 1985-02-22 | 1988-12-27 | Oy Keskuslaboratorio - Centrallaboratorium Ab | Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide |
EP0212329A1 (en) * | 1985-08-05 | 1987-03-04 | INTEROX Société Anonyme | Process for the delignification of cellulosic materials |
DE4228171A1 (en) * | 1992-08-25 | 1994-03-03 | Kaemmerer Projekt Agentur Gmbh | Wood digestion with acetic acid with the addition of formic acid |
DE19516151A1 (en) * | 1995-05-03 | 1996-11-07 | Sven Siegle | Process for the production of a pulp from cellulosic material, the pulp itself and its use |
US6156156A (en) * | 1996-11-06 | 2000-12-05 | Chempolis Oy | Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
EP2573259A1 (en) * | 2011-09-23 | 2013-03-27 | Chempolis Oy | Pretreatment method for producing water-soluble sugars from lignocellulosic material |
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