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METHOD OF PRODUCING WOOD PULP
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Title:
METHOD OF PRODUCING WOOD PULP
Author:
LEKHTO JOUKO KH
;
GUMMERUS MARKKU
;
TIENVIERI TAJSTO
;
PIIRAJNEN MIA
;
PIRINEN LIISA
;
OSTASHI ZHAN-KRISTOF
;
BILLING EHRNST-MARTIN
;
KHJARKENEN EHSKO
;
EHRSO FOL'KE
;
KOSIMSKI SERZH
Subjects:
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
;
PAPER-MAKING
;
PRODUCTION OF CELLULOSE
;
TEXTILES
Description:
FIELD: textile, paper. ^ SUBSTANCE: invention relates to a method of producing wood pulp. The method involves introduction and treatment of the raw material at the first stage of the treatment to produce wood pulp. The wood pulp pH for this procedure is between 9 and 11 at the stage of the method whereat the first suspension of the method is arranged. The first suspension of the method continues for at least 0.5 hour. The wood pulp is sorted to receive the first sorted mass and the first sorting waste. The first sorting waste is ozonised whose pH at the beginning of ozonisation is between 9 and 11. The ozonised first sorting waste at the second stage is purified in a way to have at least a part of it to go into the second sorted mass. The sorted masses are combined. The wood pulp produced in accordance with the method is used to produce paper products. ^ EFFECT: low energy consumption, prevention of corrosion of the operating units. ^ 8 cl, 5 dwg, 4 ex Изобретение относится к способу получения древесной пульпы. Способ состоит в введении и очистке сырья в первой стадии очистки для образования древесной пульпы. При этом устанавливают рН древесной пульпы между 9 и 11 в стадии способа, в которой устраивают первую приостановку способа. Первая приостановка способа составляет, по меньшей мере, 0,5 часа. Древесную пульпу сортируют на первую отсортированную массу и первый отход сортировки. Осуществляют озонирование первого отхода сортировки, рН которого в начале способа озонирования составляет между 9 и 11. Озонированный первый отход сортировки во второй стадии очищают таким образом, чтобы, по меньшей мере, часть его стала принадлежать ко второй отсортированной массе. Отсортированные массы объединяют. Древесную пульпу, произведенную в соответствии со способом, используют при получении бумажных продуктов. Обеспечивается более низкое потребление энергии, предотвращается коррозия рабочих установок. 2 н. и 6 з.п. ф-лы, 5 ил.
Creation Date:
2009
Language:
English;Russian
Source:
esp@cenet
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