公开(公告)号：EP1356156B1

公开(公告)日：2007-06-06

申请号：EP02709938.1

申请日：2002-01-23

申请人： FPInnovations

发明人： VAN HEEK, Ronald, Peter ,  DORRIS, Gilles, Marcel ,  ULOTH, Victor, Charles ,  PAGE, Natalie ,  HU, Thomas, Qiuxiong ,  LECLERC, Denys, Francois

IPC分类号： D21C11/00

CPC分类号： D21C11/0057

摘要： Oxidized white liquor is heat treated to increase the concentration of PSUV measured at 285 or 286 nm or PSVIS measured at 416 nm and the PSUV/PSGR or PSVIS/PSGR ratio, whereby the content of active polysulphide in the total polysulphide is increased which active polysulphide can be exploited to increase pulp yield in Kraft pulping.

摘要翻译： 氧化白液进行热处理，以增加在285或286nm测量的PSUV浓度或在416nm测量的PSVIS和PSUV / PSGR或PSVIS / PSGR比，从而增加总多硫化物中活性多硫化物的含量，其中活性多硫化物 可以利用来提高牛皮纸制浆中的纸浆产量。

公开(公告)号：EP1766127A1

公开(公告)日：2007-03-28

申请号：EP05708158.0

申请日：2005-02-07

申请人： Helsinki University of Technology

发明人： PIRTTINEN, Esa ,  STENIUS, Per ,  VUORINEN, Tapani

IPC分类号： D21C3/28 ,  D21C11/00

CPC分类号： D21C11/04 ,  B01D19/0404 ,  D21C3/28

摘要： The object of the invention is to reduce foaming of black liquor. It is based on observation about the effect of colloidal neutral substances on the separation of soap. According to the method foaming of the black liquor is reduced by adding stabilized colloidal neutral substances to the black liquor. The amount of colloidal neutral substances is enough to change most of the fatty acid soap and resin acid soap to liquid crystal phase.

公开(公告)号：EP1304412B1

公开(公告)日：2005-09-14

申请号：EP02028861.9

申请日：2000-03-22

申请人： OJI PAPER CO., LTD.

发明人： Izumi, Yoshiya ,  Sugiura, Jun ,  Kagawa, Hitoshi ,  Azumi, Naoya

IPC分类号： B01D61/00 ,  B01D61/02 ,  B01D61/14 ,  B01D63/00 ,  D21C11/00 ,  D21C5/00

CPC分类号： D21C5/005 ,  D21C9/147 ,  D21C11/0042

公开(公告)号：EP1392913A1

公开(公告)日：2004-03-03

申请号：EP02722318.9

申请日：2002-05-07

申请人： V & K Consulting Avoin Yhtiö

发明人： KOTONEN, Petteri ,  VÄKIPARTA, Toni

IPC分类号： D21B1/12 ,  D21C11/00

CPC分类号： D21F1/66 ,  D21C5/00

摘要： The present invention relates to a separation method of fibre and fibre-based material and lipophilic extractive material; the method permits a reduction in the water consumption of a pulp mill and the use of wood species having higher extractives content in the mechanical and chemi-mechanical pulp production. In a preferred embodiment of the invention, a decanter centrifuge is used to recover solids and to separate solids and lipophilic extractives. With a decanter centrifuge a situation is reached in which the colloids containing lipophilic extractive material do not settle but fibre and fibre-based solids settle due to a higher density.

公开(公告)号：EP1319103A1

公开(公告)日：2003-06-18

申请号：EP01913912.0

申请日：2001-02-27

申请人： Chempolis Oy

发明人： ROUSU, Pasi ,  ROUSU, Päivi ,  ROUSU, Esa ,  ANTTILA, Juha

IPC分类号： D21C11/00

CPC分类号： D21C11/0007 ,  C05F7/02 ,  D21C11/0028 ,  Y10S210/924 ,  Y10S210/928

摘要： The invention relates to a process for treating bleaching liquors from pulping processes based on organic acids. The process is characterized in that inorganic acid, such as nitric acid, phosphoric acid and/or sulphuric acid, is added into a bleaching liquor obtained from the bleaching or a stage closely associated with bleaching, whereby organic acids contained in the bleaching liquor are released into the bleaching liquor. The organic acids are then separated from the bleaching liquor and recycled to the cooking stage to be used as cooking chemicals. The nitrogen-, phosphor- and/or sulphur-containing product thereby produced, from which organic acids have been separated, is recovered to be used as a fertilizer or as raw material for a fertilizer.

公开(公告)号：EP1266075A1

公开(公告)日：2002-12-18

申请号：EP01942689.9

申请日：2001-01-16

申请人： Rhodia Consumer Specialties Limited

发明人： BOWDERY, Ruth Elizabeth ,  EDMUNDS, Stephanie ,  TALBOT, Robert Eric

IPC分类号： D21C11/00 ,  D21C9/16 ,  D21H21/04

CPC分类号： D21C11/0028 ,  D21C5/005 ,  D21C9/163

摘要： Pulping liquors used in the bleaching of pulps by hydrogen peroxide, and containing catalase-producing bacteria and/or catalase enzyme are treated with tris (hydroxymethyl) phosphine or a tetrakis (hydroxymethyl) phosphonium salt to kill the bacteria and destroy the enzyme.

公开(公告)号：EP1264041A1

公开(公告)日：2002-12-11

申请号：EP00917107.5

申请日：2000-04-06

申请人： Chempolis Oy

发明人： ROUSU, Pasi ,  ROUSU, Päivi ,  ROUSU, Esa

IPC分类号： D21C9/10 ,  D21C11/00 ,  C05D1/00

CPC分类号： D21C11/0028 ,  C05D1/00 ,  D21C9/1063 ,  D21C11/0007

摘要： The invention relates to a process for producing cellulose and a fertilizer by-product by using a closed cycle of cooking chemicals and process waters. In the process of the invention, the pulp is bleached by at least partly using potassium hydroxide as a bleaching chemical. Thus, a bleach concentrate rich in potassium is obtained from the bleach filtrate, which bleach concentrate is combined with ashes obtained from the burning of lignin and other organic matter recovered from pulp production as a by-product, in order to be used as a potash fertilizer. The bleach concentrate can also be used as a potash fertilizer as such. The invention also relates to a potash fertilizer obtained this way.

公开(公告)号：EP0954632B1

公开(公告)日：2002-09-25

申请号：EP98900833.9

申请日：1998-01-23

申请人： Pulp and Paper Research Institute of Canada ,  ECO-TEC LIMITED

发明人： PALEOLOGOU, Michael ,  THOMPSON, Rokhsareh ,  BERRY, Richard, McKinnon ,  BROWN, Craig, J. ,  SHEEDY, Michael

IPC分类号： D21C11/00

CPC分类号： D21C11/005 ,  B01J43/00 ,  D21C11/04 ,  Y10S210/928

摘要： A process using an amphoteric ion-exchange resin, also known as a "snake-cage polyelectrolyte" resin, contained in an ion retardation unit (9) separates kraft white liquor (8) into sulphide-rich (12) and caustic-rich (10) components. The sulphide-rich component (12) can be used in the initial stage of pulping (1), pretreatment of wood chips prior to pulping, or it can be used to make polysulphide-rich liquor. The caustic-rich component (10) can be used in the final delignification phase, in place of sodium hydroxide or white liquor in oxygen delignification, pH adjustment and flue gas scrubbing. The same system can be used to separate green (6) and polysulphide liquors (8a) into sulphide-rich and sulphide-poor components, and to remove sulphide from other mill caustic streams contaminated with sulphide.

公开(公告)号：EP0897432B1

公开(公告)日：2002-01-16

申请号：EP97918182.3

申请日：1997-05-06

申请人： Andritz-Ahlstrom OY

发明人： IIVONEN, Mauno ,  KOSKINEN, Kari ,  KURKIO, Jarl ,  RAMARK, Hannu ,  TURUNEN, Esko

IPC分类号： D21C11/00 ,  C11D15/00

CPC分类号： D21C11/0007

摘要： The present invention relates to a method and apparatus for intensifying an alkaline pulping process in which a soap-containing fraction is separated from black liquor and treated further in order to separate fibers from the fraction prior to further treatment of the soap-containing fraction by evaporation or by cooking it to form tall oil.

公开(公告)号：EP1092059A4

公开(公告)日：2001-10-24

申请号：EP99955306

申请日：1999-05-28

申请人： UNITED STATES BORAX INC

发明人： BAIR CHARLES M ,  MCBROOM ROBERT B ,  TRAN HONGHI N

IPC分类号： D21C3/02 ,  D21C11/00 ,  D21C11/04

CPC分类号： D21C11/0078 ,  D21C3/02 ,  Y02P40/44

摘要： A method is provided for the use of borates in the recausticization of alkali-containing liquors such as those produced in the chemical and semi-chemical pulping of wood and in the oxidation and bleaching of wood pulp. Sodium hydroxide is regenerated from sodium carbonate-containing smelts in such pulp processes by autocausticization through the addition of limited amounts of borate. Autocausticization may be carried out at boron to carbonate molar ratios below 2:1 and at sodium to boron molar ratios exceeding 3:1, resulting in high reaction efficiency. Partial autocausticization using borate may also be combined with conventional lime recausticization for the regeneration of sodium hydroxide from sodium carbonate-containing smelts.

摘要翻译： 本发明提供了硼酸盐在含碱液体的再苛化方面的应用，例如在木材的化学和半化学制浆以及木浆的氧化和漂白中制备的含碱液体。 氢氧化钠通过添加有限量的硼酸盐，通过自动碱化在含有碳酸钠的熔融物中再生。 当硼与碳酸盐的摩尔比低于2：1并且钠与硼的摩尔比超过3：1时，可进行自动碱化，导致高反应效率。 使用硼酸盐的部分自动化也可以与传统的石灰再苛化相结合，以由含碳酸钠的熔炼物再生氢氧化钠。