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Publication of CO4230280A1publicationCriticalpatent/CO4230280A1/en
UN METODO QUE TIENE UNA SELECTIVIDAD INCREMENTADA PARA ELBLANQUEO DE PULPA LIGNOCELULOSICA DE ALTA CONSISTENCIA, DE UN PRIMER GRADO DE CLARIDAD GE A UN SEGUNDO GRADO DE CLARIDAD GE MAS ELEVADO; EL CUAL COMPRENDE LAS ETAPAS DE:(a) EL PULVERIZIMIENTO DE LA PULPA DE ALTA CONSISTENCIA QUE POSEE UN PRIMER GRADO DE CLARIDAD GE, EN UNA SUPERFICIE ESPECIFICA DE AL MENOS 90 m2 /kg APROXIMADAMENTE SIN UN CAMBIO CONSIDERABLE DE LA DRENABILIDAD DE LA PULPA; Y(b) HACER ENTRAR EN CONTACTO LA PULPA PULVERIZIDA CON UN AGENTE BLANQUEADOR GASEOSO A FIN DE FORMAR UNA PULPA BLANQUEADA QUE TIENE UN SEGUNDO Y MAS ELEVADO GRADO DE CLARIDAD GE".A METHOD THAT HAS INCREASED SELECTIVITY FOR HIGH CONSISTENCY LIGNOCELLULOSIC PULP BLEACHING, FROM A FIRST DEGREE OF GE CLARITY TO A SECOND DEGREE OF GE CLARITY HIGHER; WHICH INCLUDES THE STAGES OF: (a) THE HIGH CONSISTENCY PULP SPRAY THAT HAS A FIRST DEGREE OF CLARITY GE, AT A SPECIFIC SURFACE OF AT LEAST 90 m2 / kg APPROXIMATELY WITHOUT A CONSIDERABLE CHANGE OF PULP DRENABILITY; AND (b) BRINGING THE SPRAY PULP INTO CONTACT WITH A GASEOUS WHITENING AGENT IN ORDER TO FORM A BLEACHED PULP THAT HAS A SECOND AND HIGHER DEGREE OF CLARITY GE. "
CO93411551A1992-10-011993-10-01
IMPROVEMENT OF THE HIGH-CONSISTENCY LIGNOCE-LULOSIC PULP BLANCHING PROCESS
CO4230280A1
(en)