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41.发明授权BLEACHING AND BRIGHTNESS STABILIZATION OF LIGNOCELLULOSIC MATERIALS WITH WATER-SOLUBLE PHOSPINES OR PHOSPHONIUM COMPOUNDS 有权METHOD FOR木质纤维素材料与水溶性膦或鏻美白和亮度稳定
公开(公告)号：EP1590525B1
公开(公告)日：2006-10-25
申请号：EP04707476.0
申请日：2004-02-03
CPC分类号： D21C9/1084 , D21C9/1047 , D21H21/32
摘要： A method for the bleaching and brightness stabilization of lignocellulosic materials is described. The method involves the treatment of lignocellulosic materials, in particular, (a) wood pulps such as thermomechanical pulps (TMP) and chemithermomechanical pulps (CTMP), and (b) papers made from wood pulps, with a water-soluble phosphine or a phosphonium compound preferably containing at least one phosphorus hydroxyalkyl bond/linkage, for example a phosphorus hydroxymethyl bond/linkage (P-CH2OH). One example of such a water-soluble phosphine is the commercially available, tris(hydroxymethyl)phosphine (THP), P(CH2OH)3. One example of such a phosphonium compound is the commercially available, tetrakis(hydroxymethyl)phosphonium chloride (THPC), [P(CH2OH)4]Cl.
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公开(公告)号：EP1264043B1
公开(公告)日：2006-03-01
申请号：EP01914879.0
申请日：2001-03-15
发明人： BANKES, Alan, Henry , WILD, Peter, Martin , OUELLET, Daniel , Olmstead Matthew Allan , Shiari Behrouz , Siadat Seyed Mohammad Ali , Senger John JAA
摘要： This invention relates to a refiner force sensor for refiners used in the pulp and paper industry, to a refining apparatus, and to a method of measuring force acting on a refiner bar in a refiner.
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43.发明公开BLEACHING AND BRIGHTNESS STABILIZATION OF LIGNOCELLULOSIC MATERIALS WITH WATER-SOLUBLE PHOSPINES OR PHOSPHONIUM COMPOUNDS 有权METHOD FOR木质纤维素材料与水溶性膦或鏻美白和亮度稳定
公开(公告)号：EP1590525A1
公开(公告)日：2005-11-02
申请号：EP04707476.0
申请日：2004-02-03
CPC分类号： D21C9/1084 , D21C9/1047 , D21H21/32
摘要： A method for the bleaching and brightness stabilization of lignocellulosic materials is described. The method involves the treatment of lignocellulosic materials, in particular, (a) wood pulps such as thermomechanical pulps (TMP) and chemithermomechanical pulps (CTMP), and (b) papers made from wood pulps, with a water-soluble phosphine or a phosphonium compound preferably containing at least one phosphorus hydroxyalkyl bond/linkage, for example a phosphorus hydroxymethyl bond/linkage (P-CH2OH). One example of such a water-soluble phosphine is the commercially available, tris(hydroxymethyl)phosphine (THP), P(CH2OH)3. One example of such a phosphonium compound is the commercially available, tetrakis(hydroxymethyl)phosphonium chloride (THPC), [P(CH2OH)4]Cl.
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44.发明授权TREATMENT OF CHLORINE DIOXIDE GENERATOR EFFLUENT AND FEED STREAMS WITH FIXED-RESIN BED 失效CHLORDIOXIDGENERATORAUSFLUSS和入口用硬床树脂处理
公开(公告)号：EP0946408B1
公开(公告)日：2001-02-21
申请号：EP97943702.7
申请日：1997-10-09
CPC分类号： C01B17/904 , C01B11/023 , C01D5/16 , Y10S423/14
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45.发明授权ELECTROMEMBRANE PROCESSES FOR THE TREATMENT OF KRAFT MILL ELECTROSTATIC PRECIPITATOR CATCH 无效电热膜法治疗望尘莫及静电分离器的马达板厂
公开(公告)号：EP0799086B1
公开(公告)日：1999-03-03
申请号：EP95940924.4
申请日：1995-12-20
发明人： PALEOLOGOU, Michael , BERRY, Richard, McKinnon , THOMPSON, Rokhsareh , WEARING, James, Theodore
CPC分类号： B01D61/44 , B01D61/445 , D21C11/066
摘要： Alkali metal hydroxide and acid are recovered from alkali metal salts by water-splitting. A two-compartment cell employs monovalent anion-selective membranes and bipolar membranes; a three-compartment cell (1) employs monovalent anion-selective membranes (3), cation-selective membranes (4) and bipolar membranes (2a, 2b). A particular application is the conversion of the Electrostatic Precipitator Catch of the recovery boiler of coastal and/or closed-cycle kraft pulp mill with reuse of the sodium/potassium hydroxide and sulfate, depleted in chloride.
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公开(公告)号：EP0789798B1
公开(公告)日：1998-06-24
申请号：EP95933278.4
申请日：1995-10-11
发明人： CHEN, Jianxin
CPC分类号： D21C9/1036 , D21C9/163
摘要： A process of delignifying and bleaching a chemical wood pulp with hydrogen peroxide and dicyandiamide as an ativator provides a higher degree of delignification and brightness of the pulp and overcomes problems of fibre degradation. The process comprises adding hydrogen peroxide and dicyandiamide as a bleaching activator to a chemical wood pulp slurry under alkaline conditions.
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47.发明公开HIGH EFFICIENCY VESSELS FOR BLEACHING LIGNOCELLULOSIC, CELLULOSIC AND SYNTHETIC POLYMERIC FIBROUS MATERIALS 失效高性能船舶漂白木质纤维素，纤维素和合成高分子纤维材料
公开(公告)号：EP0797702A1
公开(公告)日：1997-10-01
申请号：EP95925351.0
申请日：1995-06-29
CPC分类号： D21C9/1057 , D21C9/10 , D21C9/163 , F01N1/089 , F01N3/06 , F01N2230/06 , F01N2270/02 , F01N2270/08 , F01N2450/20 , F01N2470/06 , F01N2470/24 , F01N2490/08
摘要： A process is disclosed which leads to a substantial improvement in the efficiency of bleaching lignocellulosic and like materials with hydrogen peroxide. This has been achieved by reducing the rate and extent of non-productive decomposition of peroxide. The bleaching of lignocellulosic materials at increased temperatures and pressures accelerates the rate of pulp bleaching and the rate of peroxide decomposition. Conventional bleaching technology limits these non-productive reactions by including silicates or chelating agents in the bleaching solution. Here it is shown that a substantial part of the peroxide decomposition that occurs upon exposure to process equipment is decreased substantially by using an appropriate metallurgy. A bleaching vessel having at least a contact surface, i.e., a surface in contact with the processed pulp, constructed from zirconium, niobium, hafnium, tantalum or alloys thereof is described which limits peroxide decomposition. The use of zirconium, niobium, hafnium, tatalum or alloy thereof eliminates the requirement for silicate and other sequestering agents in the bleaching solution. This novel bleaching technology is used to improve the efficiency of alkaline peroxide with both conventional as well as with new high temperature lignocellulosic bleaching processes or processes which generate peroxide species under alkaline conditions.
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公开(公告)号：EP0789798A1
公开(公告)日：1997-08-20
申请号：EP95933278.0
申请日：1995-10-11
发明人： CHEN, Jianxin
IPC分类号： D21C9
CPC分类号： D21C9/1036 , D21C9/163
摘要： A process of delignifying and bleaching a chemical wood pulp with hydrogen peroxide and dicyandiamide as an ativator provides a higher degree of delignification and brightness of the pulp and overcomes problems of fibre degradation. The process comprises adding hydrogen peroxide and dicyandiamide as a bleaching activator to a chemical wood pulp slurry under alkaline conditions.
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公开(公告)号：EP0571433B1
公开(公告)日：1995-04-19
申请号：EP92904110.1
申请日：1992-02-04
发明人： LEE, Chung-Li , MURRAY, Robert W. , HUNT, Kenneth
CPC分类号： D21C9/16 , D21C9/1036 , D21C9/166
摘要： A chemical pulp that contains reactants able to generate a dioxirane within the pulp. The reactants comprise of carbonyl compound, preferably a ketone, and oxygen donor in proportions suitable to produce a dioxirane having a molecular diameter of less than 140 angstrom units. A process of bleaching a chemical pulp is also described. The process comprises mixing the pulp with the reactants able to generate a dioxirane within the pulp.
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公开(公告)号：EP0515362B1
公开(公告)日：1994-05-11
申请号：EP90903735.0
申请日：1990-02-16
发明人： LEE, Chung-Li
摘要： A process of bleaching a chemical pulp with a dioxirane produces a pulp of good quality and reduces environmental concerns in so doing. A chemical pulp is contacted with a dioxirane, and either with or without known bleaching agents, in combination or sequence.
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