SU821614A1 - Method of obtaining pulp-containing semiproduct - Google Patents

Method of obtaining pulp-containing semiproduct Download PDF

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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
Application number
SU792782131A
Other languages
Russian (ru)
Inventor
Марк Аронович Зильберглейт
Всеволод Михайлович Резников
Зоя Казимировна Юхнович
Original Assignee
Белорусский Технологический Институт Им.C.M.Кирова
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Белорусский Технологический Институт Им.C.M.Кирова filed Critical Белорусский Технологический Институт Им.C.M.Кирова
Priority to SU792782131A priority Critical patent/SU821614A1/en
Application granted granted Critical
Publication of SU821614A1 publication Critical patent/SU821614A1/en

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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)

Формула изобретенияClaim Способ получения целлюлозного полуфабриката путем варки древесной щепы муравьиной или уксусной кислотой и перекисью водорода при повышенной температуре, отличающийся тем, что, с целью снижения расхода варочных реагентов при одновременном повышении физико-механических показателей и выхода целевого продукта, варку проводят . в две стадии, при этом первую стадию варки осуществляют одной муравьиной или уксусной кислотой, а вторую стадию проводят муравь-, иной или уксусной кислотой в присутствии перекиси водорода.A method of producing a cellulosic semi-finished product by cooking wood chips with formic or acetic acid and hydrogen peroxide at an elevated temperature, characterized in that, in order to reduce the consumption of cooking reagents while increasing the physical and mechanical properties and yield of the target product, cooking is carried out. in two stages, while the first stage of cooking is carried out with one formic or acetic acid, and the second stage is carried out with formic, other or acetic acid in the presence of hydrogen peroxide.
SU792782131A 1979-06-19 1979-06-19 Method of obtaining pulp-containing semiproduct SU821614A1 (en)

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

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Application Number Title Priority Date Filing Date
SU792782131A SU821614A1 (en) 1979-06-19 1979-06-19 Method of obtaining pulp-containing semiproduct

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SU (1) SU821614A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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