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1.发明授权METHOD FOR IMPROVED TURPENTINE RECOVERY FROM MODERN COOKING PLANTS 有权用于改进TERPENTINRÜCKGEWINNUNG方法在现代烹饪系统
公开(公告)号：EP1268925B1
公开(公告)日：2009-11-04
申请号：EP00987538.6
申请日：2000-12-20
申请人： Metso Paper, Inc.
IPC分类号： D21C11/06
CPC分类号： D21C11/0007 , D21C11/06
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公开(公告)号：EP1346103A1
公开(公告)日：2003-09-24
申请号：EP01997586.1
申请日：2001-11-21
申请人： Metso Paper, Inc.
发明人： FANT, Thomas , SVEDMAN, Mikael , LAMMI, Lari
摘要： A continuous, alkaline process for the production of pulp from wood chips, wherein the preheated chips are subjected to an extended impregnation step for at least 60 min, preferably longer, at a temperature not exceeding the impregnation liquor boiling point at atmospheric conditions, and a rapid heating and cooking period of less than 65 min, preferably shorter, followed by cooling to below reaction temperature. Fresh alkali is added both during impregnation and the heating/cooking period.
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公开(公告)号：EP1330572A1
公开(公告)日：2003-07-30
申请号：EP01983617.0
申请日：2001-10-26
申请人： Metso Paper, Inc.
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04
摘要： This invention refers to a method for producing pulp in an alkaline digesting process comprising the following steps: charging lignocellulosic material to a digester system; pre-treating said lignocellulosic material with an impregnation liquor and subsequently with a hotter liquor containing black liquor, simultaneously displacing spent liquor; heating and cooking said lignocellulosic material to produce cooked lignocellulosic material and cooking liquor; displacing a portion of said cooking liquor at cooking temperature from said digester to a first section by supplying a washing liquid; further displacing a second portion of displaced liquor from said digester system to at least a second section by supplying further washing liquid until the temperature of said second portion of displaced liquor drops to a temperature of at least about the boiling point of said cooking liquor at atmospheric pressure, said second portion of displaced liquor having a dry solids content substantially lower than the initial dry solids content of the cooking liquor and substantially lower than that of said first portion of displaced liquor. The method is characterized in that substantial parts of said second portion of displaced liquor is heated by the heat of the first portion of displaced liquor, whereby said first portion having a high solids content is prevented from being reused in a digester and said heated second portion is further used as hot liquor in the pre-treatment and heating of said lignocellulosic material.
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公开(公告)号：EP1268924B1
公开(公告)日：2012-11-28
申请号：EP00929570.0
申请日：2000-05-22
申请人： Metso Paper, Inc.
发明人： SVEDMAN, Mikael
IPC分类号： D21C9/147
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公开(公告)号：EP1702101A1
公开(公告)日：2006-09-20
申请号：EP04805227.8
申请日：2004-12-22
CPC分类号： D21C1/06 , D21C3/02 , D21C3/222 , D21C3/26 , D21C11/0021
摘要： According to the invention, polysulfide is used in the manufacture of kraft pulp in the initial stage of a displacement batch process in order to improve the yield. Polysulfide-containing white liquor is added intermixed with the first liquor charged to the digester, or as a separate charge before the impregnation liquor is introduced. Preferably, a cooking catalyst, e.g. antraquinone, is added to the white liquor charge as the cooking stage commences.
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公开(公告)号：EP1753907A1
公开(公告)日：2007-02-21
申请号：EP05738047.9
申请日：2005-04-28
申请人： Metso Paper, Inc.
IPC分类号： D21C1/02
CPC分类号： D21C1/02
摘要： The present invention concerns a method and an apparatus for removing gas from comminuted lignocellulose material, wherein material is heated with steam into a degasification temperature and the heated material flow is led as a dense composed bed through a gas removal stage. The material is heated by introducing a steam flow into the material flow in transversal direction with respect to the direction of the material flow.
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公开(公告)号：EP1339913A1
公开(公告)日：2003-09-03
申请号：EP01997587.9
申请日：2001-11-21
申请人： Metso Paper, Inc.
发明人： FANT, Thomas , SVEDMAN, Mikael , LAMMI, Lari
摘要： An alkaline batch process for the production of pulp from wood chips, wherein the preheated chips are subjected to an extended impregnation step outside the digester for at least 60 min, preferably longer, at a temperature not ex-ceeding the impregnation liquor boiling point at atmos-pheric conditions, and a rapid heating and cooking period in the digester of less than about 90 min, preferably shorter, followed by cooling to below reaction tempera-ture. Fresh alkali is added both during impregnation and the heating/cooking period.
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