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Method for unplugging or cleaning a screen in a continuous process kraft cooking digester

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Title:
Method for unplugging or cleaning a screen in a continuous process kraft cooking digester
Author: LIMA, Lucas ; DA SILVA, Jeferson ; RIBEIRO, Thais ; ALVES, Valdemir ; SANTOS, Carlos ; DE MOURA, Gláucio ; BLONSKI, Maria ; MOROMIZATO, Carlos ; DE ARAÚJO, Jonatan ; DE CASTRO, Paulo ; SAVACINI, Ricardo
Subjects: APPARATUS THEREFOR ; PAPER-MAKING ; PRODUCTION OF CELLULOSE ; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS ; REGENERATION OF PULPING LIQUORS ; TEXTILES
Description: The present invention is related to a method for unplugging or cleaning a screen in a continuous process kraft cooking digester process, wherein the continuous Kraft cooking digester comprises a plurality of screens, each screen having a digestion zone facing side and a digestor wall facing side, the plurality of screens disposed in a screen ring, the screen ring having at least one screen flow outlet leaving the digestor and at least one screen flow inlet entering the screen ring; the at least one screen flow inlet entering the screen ring providing a washing liquor to the screen for: unplugging, alkalinization treatment or both, without stopping the system. Föreliggande uppfinning avser ett förfarande för att täppa av eller rengöra en koksil i en kontinuerlig sulfatkokningsprocess, varvid den kontinuerliga sulfatkokaren innefattar ett flertal koksilar, varvid varje koksil har en sida som vetter mot en kokningszon och en sida som vetter mot en kokarvägg, flertalet silar är anordnade i en silring, varvid silringen har minst ett silflödesutlopp som lämnar kokaren och minst ett sillödesinlopp som går in i silringen; det minst ett silflödesinloppet som går in i silringen tillhandahåller en tvättlut till koksilen för: avtäppning, alkaliseringsbehandling eller båda, utan att stoppa systemet.
Creation Date: 2022
Language: English;Finnish;Swedish
Source: esp@cenet

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Method for unplugging or cleaning a screen in a continuous process kraft cooking digester

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