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公开(公告)号：EP1322814B1
公开(公告)日：2011-03-09
申请号：EP01969897.6
申请日：2001-09-14
发明人： DELMAS, Michel , AVIGNON, Gérard
CPC分类号： D21C9/166 , D21C9/101 , D21C9/1057 , D21C9/163
摘要： The invention concerns a method for bleaching different types of paper pulp in two steps at atmospheric pressure and at a temperature not higher than 100 °C. The first step consists in contacting the unbleached paste with a mixture of paracetic acid and performic acid. The second step consists in treating the bleached pulp derived from the first step, with a solution of soda and hydrogen peroxide. The resulting pulps exhibit a high index of whiteness and a degree of polymerisation close to unbleached pulps. The method is environmentally safe and non-polluting.
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2.发明授权INSTALLATION FOR IMPLEMENTING A METHOD FOR PRODUCING PAPER PULP, LIGNINS AND SUGARS AND PRODUCTION METHOD USING SUCH AN INSTALLATION 有权水泥厂为其过程的纸浆，木质素和糖方法的生产中使用这样的系统中实现
公开(公告)号：EP1877618B1
公开(公告)日：2010-11-03
申请号：EP06754773.7
申请日：2006-04-20
摘要： The invention proposes an installation (10) in which the impregnation and fractionation of the raw material (MP) are conducted at atmospheric pressure, characterized in that it comprises means (18, 20) for transferring the raw material (MP) successively to a first treatment station (PT1) and a second treatment station (PT2), each comprising means (G1, G2) for temporarily combining, at the first station (PT1), the raw material (MP) with a quantity of a first mixture of organic acids and, at the second station (PT2), for temporarily combining the raw material (MP) with a quantity of a second mixture; and means, after impregnation, for at least partially recovering the quantity of second mixture after impregnation and for recycling at least a portion of the second recovered mixture to form at least partially said first impregnation mixture used at the first station (PT1).
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3.发明公开INSTALLATION FOR IMPLEMENTING A METHOD FOR PRODUCING PAPER PULP, LIGNINS AND SUGARS AND PRODUCTION METHOD USING SUCH AN INSTALLATION 有权水泥厂为其过程的纸浆，木质素和糖方法的生产中使用这样的系统中实现
公开(公告)号：EP1877618A1
公开(公告)日：2008-01-16
申请号：EP06754773.7
申请日：2006-04-20
摘要： The invention proposes an installation (10) in which the impregnation and fractionation of the raw material (MP) are conducted at atmospheric pressure, characterized in that it comprises means (18, 20) for transferring the raw material (MP) successively to a first treatment station (PT1) and a second treatment station (PT2), each comprising means (G1, G2) for temporarily combining, at the first station (PT1), the raw material (MP) with a quantity of a first mixture of organic acids and, at the second station (PT2), for temporarily combining the raw material (MP) with a quantity of a second mixture; and means, after impregnation, for at least partially recovering the quantity of second mixture after impregnation and for recycling at least a portion of the second recovered mixture to form at least partially said first impregnation mixture used at the first station (PT1).
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4.发明授权PROCEDE DE PRODUCTION DE PATE A PAPIER, LIGNINES, SUCRES ET ACIDE ACETIQUE PAR FRACTIONNEMENT DE MATIERE VEGETALE LIGNOCELLULOSIQUE EN MILIEU ACIDE FORMIQUE/ACIDE ACETIQUE 有权PROCESS FOR生产纸浆，木质素，木质纤维素材料的糖和醋酸通过分馏手段甲酸和乙酸
公开(公告)号：EP1180171B1
公开(公告)日：2003-10-08
申请号：EP99916998.0
申请日：1999-05-06
发明人： AVIGNON, Gérard , DELMAS, Michel
摘要： The invention concerns a method for producing paper pulp from a lignocellulosic vegetable raw material. Said method consists in contacting said raw material with a mixture of formic acid and acetic acid (in an amount more than 5 wt. % of the mixture) at a temperature and for a suitable reaction time, the whole being performed at room temperature. The paper pulp is separated from the organic phase and optionally bleached with ozone. The organic phase is treated to enable the recycling of the formic and acetic acids and the extraction of lignins, sugars and excess acetic acid.
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公开(公告)号：EP1322814B8
公开(公告)日：2011-05-25
申请号：EP01969897.6
申请日：2001-09-14
发明人： DELMAS, Michel , AVIGNON, Gérard
CPC分类号： D21C9/166 , D21C9/101 , D21C9/1057 , D21C9/163
摘要： The invention concerns a method for bleaching different types of paper pulp in two steps at atmospheric pressure and at a temperature not higher than 100 °C. The first step consists in contacting the unbleached paste with a mixture of paracetic acid and performic acid. The second step consists in treating the bleached pulp derived from the first step, with a solution of soda and hydrogen peroxide. The resulting pulps exhibit a high index of whiteness and a degree of polymerisation close to unbleached pulps. The method is environmentally safe and non-polluting.
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