RU93031029A - METHOD OF OBTAINING WHITE PULP OF PULP - Google Patents

METHOD OF OBTAINING WHITE PULP OF PULP

Info

Publication number
RU93031029A
RU93031029A RU93031029/12A RU93031029A RU93031029A RU 93031029 A RU93031029 A RU 93031029A RU 93031029/12 A RU93031029/12 A RU 93031029/12A RU 93031029 A RU93031029 A RU 93031029A RU 93031029 A RU93031029 A RU 93031029A
Authority
RU
Russia
Prior art keywords
pulp
amount
obtaining white
cellulose
sodium pyrophosphate
Prior art date
Application number
RU93031029/12A
Other languages
Russian (ru)
Other versions
RU2046869C1 (en
Inventor
В.Д. Кошелева
О.Л. Зарудская
Р.Б. Белодубровский
Л.К. Звездина
Т.Я. Миронова
Л.Г. Зотова
Т.А. Гришина
В.М. Богдан
С.В. Семилетко
Original Assignee
Всероссийский научно-исследовательский институт целлюлозно-бумажной промышленности
Filing date
Publication date
Application filed by Всероссийский научно-исследовательский институт целлюлозно-бумажной промышленности filed Critical Всероссийский научно-исследовательский институт целлюлозно-бумажной промышленности
Priority to RU93031029A priority Critical patent/RU2046869C1/en
Priority claimed from RU93031029A external-priority patent/RU2046869C1/en
Application granted granted Critical
Publication of RU2046869C1 publication Critical patent/RU2046869C1/en
Publication of RU93031029A publication Critical patent/RU93031029A/en

Links

Claims (1)

Способ получения беленой целлюлозы относится к целлюлозно-бумажной промышленности и может быть использован в производстве целлюлозы любого назначения. Способ включает процессы щелочной варки целлюлозосодержащего материала, промывки, сортирования и обработки химикатами в присутствии пирофосфата натрия полученной небеленой целлюлозы, последующей многоступенчатой отбелки. Сущность изобретения заключается в том, что перед отбелкой целлюлозу обрабатывают надуксусной кислотой в количестве 2,0 - 6,0% и/или гидроксидом натрия в количестве 1,0 - 10,0% от а.с.ц., а пирофосфат натрия вводят в количестве 0,1 - 0,2%.The method of producing bleached pulp relates to the pulp and paper industry and can be used in the manufacture of pulp for any purpose. The method includes the processes of alkaline pulping of cellulose-containing material, washing, sorting and processing chemicals in the presence of sodium pyrophosphate obtained unbleached pulp, followed by multi-stage bleaching. The essence of the invention lies in the fact that before bleaching the cellulose is treated with peracetic acid in the amount of 2.0 to 6.0% and / or sodium hydroxide in the amount of 1.0 to 10.0% of A.c..., and sodium pyrophosphate is injected in the amount of 0.1 - 0.2%.
RU93031029A 1993-05-31 1993-05-31 Method of bleached cellulose production RU2046869C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93031029A RU2046869C1 (en) 1993-05-31 1993-05-31 Method of bleached cellulose production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93031029A RU2046869C1 (en) 1993-05-31 1993-05-31 Method of bleached cellulose production

Publications (2)

Publication Number Publication Date
RU2046869C1 RU2046869C1 (en) 1995-10-27
RU93031029A true RU93031029A (en) 1995-12-10

Family

ID=20143165

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93031029A RU2046869C1 (en) 1993-05-31 1993-05-31 Method of bleached cellulose production

Country Status (1)

Country Link
RU (1) RU2046869C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0801170A1 (en) * 1996-04-12 1997-10-15 Chemoxal Sa Process for the delignification and/or bleaching of a paper pulp
FR2754550B1 (en) * 1996-10-15 1998-11-06 Chemoxal Sa PROCESS FOR THE DELIGNIFICATION AND / OR BLEACHING OF A PULP

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