公开(公告)号：US11795615B2

公开(公告)日：2023-10-24

申请号：US17461389

申请日：2021-08-30

申请人： Clean Chemistry, Inc.

发明人： Wayne E. Buschmann ,  Damon C. Waters

IPC分类号： D21C9/16 ,  D21C9/10 ,  D21C9/147 ,  C02F1/72 ,  C02F9/00 ,  C12P3/00 ,  C02F1/76 ,  C02F103/28 ,  C02F103/32 ,  C02F1/00 ,  C02F1/02 ,  C02F1/50 ,  C02F103/00 ,  C02F103/02

CPC分类号： D21C9/166 ,  C02F1/722 ,  C02F9/00 ,  C12P3/00 ,  D21C9/1063 ,  D21C9/147 ,  C02F1/008 ,  C02F1/02 ,  C02F1/50 ,  C02F1/76 ,  C02F1/766 ,  C02F2103/007 ,  C02F2103/023 ,  C02F2103/28 ,  C02F2103/32 ,  C02F2209/04 ,  C02F2209/36 ,  C02F2303/02 ,  C02F2303/04 ,  C02F2303/08 ,  C02F2303/20

摘要： In some embodiments, a method may include treating pulp in pulp and paper mills. The methods may include providing a peracetate oxidant solution and generating a reactive oxygen species. The peracetate solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate oxidant solution may provide enhanced treatment methods of bleaching, brightening, and delignifying pulp fibers involving the use of peracetate oxidant solutions.

公开(公告)号：US20230313456A1

公开(公告)日：2023-10-05

申请号：US17996527

申请日：2021-03-17

申请人： Messer Austria GmbH

发明人： Bernhard Thaller

IPC分类号： D21C11/00 ,  D21C3/02 ,  D21C3/22 ,  D21C9/147

CPC分类号： D21C11/0057 ,  D21C9/147 ,  D21C3/222 ,  D21C3/026

摘要： In a process for oxidation of white liquor, in particular of white liquor used in a process of production of paper or cellulose, the oxygen required for the oxidation is supplied to the reactor or the reactors in which the oxidation is carried out at least partially in the form of oxygen-containing nanobubbles. Due to the relatively long lifetime of the nanobubbles this very efficiently provides oxygen also for oxidation reactions in the white liquor proceeding at different rates.

公开(公告)号：US20230203751A1

公开(公告)日：2023-06-29

申请号：US17996473

申请日：2021-03-17

申请人： Messer Austria GmbH

发明人： Bernhard Thaller

IPC分类号： D21C9/147 ,  D21C9/10 ,  D21C9/16

CPC分类号： D21C9/147 ,  D21C9/1036 ,  D21C9/163 ,  D21C9/1057

摘要： In a process/an apparatus for producing bleached cellulose in which a lignin- and cellulose-containing suspension is subjected to at least one process step for oxygen-assisted bleaching in a reactor, such as alkaline oxygen delignification, oxygen-enhanced extraction or oxygen-enhanced peroxide bleaching, the oxygen required for the oxygen-assisted bleaching is supplied to the reactor at least partially in the form of oxygen-containing nanobubbles. The small size and high stability of the nanobubbles allow uniform distribution of the oxygen in the suspension and a comparatively long exposure time. The efficiency of the bleaching is thus substantially increased.

公开(公告)号：US20170298152A1

公开(公告)日：2017-10-19

申请号：US15521310

申请日：2015-10-19

申请人： Teknologian tutkimuskeskus VTT Oy

发明人： Antero Varhimo ,  Matti Siika-Aho ,  Jari Sirviö ,  Sari Liukkonen ,  Marjo Määttänen

IPC分类号： C08B37/00 ,  D21C9/16 ,  D21C9/147 ,  D21C3/02 ,  C08H7/00 ,  D21C1/02 ,  D21C11/00 ,  C08B37/14 ,  D21C9/00 ,  C08H8/00 ,  C08B1/00 ,  D21C5/00

CPC分类号： C08B37/0057 ,  C08B1/00 ,  C08B37/14 ,  C08H6/00 ,  C08H8/00 ,  D21C1/02 ,  D21C3/02 ,  D21C5/00 ,  D21C9/00 ,  D21C9/147 ,  D21C9/163 ,  D21C11/0007

摘要： The present invention relates to a method of treating biomass, comprising providing a lignocellulosic biomass feedstock; contacting the biomass feedstock in a mixture, which is formed by the biomass, water and an alkaline agent, with an oxidizing agent at an elevated temperature; and continuing the contacting of the biomass feedstock with the oxidizing agent until a notable part of the lignin is solubilised. The step of providing the biomass feedstock comprises contacting a biomass raw-material containing cellulose, hemicellulose and lignin in an aqueous phase with an alkaline agent; continuing the contacting of the biomass with the alkaline agent until a significant portion of the hemicellulose is dissolved in the aqueous phase to provide a modified biomass; recovering the modified biomass; optionally opening the structure of the modified biomass by mechanical treatment; and using the modified biomass as a lignocellulosic biomass feedstock. Treating the biomass provides hemicellulose, lignin and cellulose fractions that have a multitude of applications in the bioeconomy.

公开(公告)号：US09771687B2

公开(公告)日：2017-09-26

申请号：US15067749

申请日：2016-03-11

申请人： INTERNATIONAL PAPER COMPANY

发明人： Mengkui Lou

IPC分类号： D21H13/04

CPC分类号： D21C9/005 ,  C08B15/10 ,  C08H8/00 ,  D21C9/1063 ,  D21C9/147 ,  D21C9/18 ,  D21H13/04

摘要： A pulp in accordance with a particular embodiment includes crosslinked cellulose fibers. The pulp can have high brightness, reactivity, and intrinsic viscosity. The pulp, therefore, can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with a particular embodiment of the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. The bleaching process can reduce a lignin content of the pulp to less than or equal to 0.09% by oven-dried weight of the crosslinked cellulose fibers. Crosslinking the cellulose fibers can include exposing the cellulose fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175.

公开(公告)号：US20170073892A1

公开(公告)日：2017-03-16

申请号：US15125276

申请日：2015-03-09

申请人： GP CELLULOSE GMBH

发明人： Arthur J. Nonni ,  Charles E. Courchene ,  Blair R. Carter

IPC分类号： D21C9/16 ,  D21H11/20 ,  D21C9/14 ,  D21C3/02 ,  D21C9/00

CPC分类号： D21C9/163 ,  B01J20/24 ,  C08B15/00 ,  C08B15/04 ,  D21C3/02 ,  D21C9/004 ,  D21C9/142 ,  D21C9/147 ,  D21H11/20 ,  Y10T428/298

摘要： A pulp fiber with an enhanced carboxyl content resulting in improved antimicrobial, anti-yellowing and absorptive properties. Methods for making the kraft pulp fiber and products made from it are also described.

摘要翻译： 具有增强的羧基含量的纸浆纤维导致改善的抗微生物，抗黄变和吸收性能。 还描述了制备牛皮纸浆纤维的方法和由其制成的产品。

公开(公告)号：US20160168791A1

公开(公告)日：2016-06-16

申请号：US15051742

申请日：2016-02-24

申请人： The Research Foundation for The State University of New York

发明人： Thomas E. Amidon ,  Raymond Francis ,  Gary M. Scott ,  Jeremy Bartholomew ,  Bandaru V. Ramarao ,  Christopher D. Wood

IPC分类号： D21C3/04 ,  D21C9/12 ,  D21C9/10 ,  D21C9/147

CPC分类号： D21C3/04 ,  D21C1/02 ,  D21C3/00 ,  D21C3/02 ,  D21C3/222 ,  D21C5/005 ,  D21C9/1057 ,  D21C9/1063 ,  D21C9/123 ,  D21C9/147 ,  D21C9/163 ,  D21C11/0007 ,  D21H11/02 ,  D21H11/08 ,  D21H11/10 ,  D21H17/005 ,  D21H21/32

摘要： An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes.

摘要翻译： 制浆和漂白木质纤维素材料的综合方法，其中木质纤维素材料的装料在制浆和漂白之前被生物泵送和/或水提取。 木素纤维素材料可以在破坏木质素 - 碳水化合物复合物的酶存在下机械制浆和漂白。

公开(公告)号：US20160040362A1

公开(公告)日：2016-02-11

申请号：US14775425

申请日：2014-02-24

申请人： GP CELLULOSE GMBH

发明人： Arthur J. NONNI ,  Charles E. COURCHENE

IPC分类号： D21H21/32 ,  D21H11/20 ,  D21H11/04 ,  D21H17/64

CPC分类号： D21H21/32 ,  D21C3/02 ,  D21C9/1026 ,  D21C9/1036 ,  D21C9/144 ,  D21C9/147 ,  D21C9/163 ,  D21H11/04 ,  D21H11/20 ,  D21H17/64

摘要： A pulp fiber with an enhanced carbonyl content resulting in improved antimicrobial, anti-yellowing and absorptive properties. Methods for making the kraft pulp fiber and products made from it are also described.

摘要翻译： 具有增强的羰基含量的纸浆纤维导致改善的抗微生物，抗黄变和吸收性能。 还描述了制备牛皮纸浆纤维的方法和由其制成的产品。

公开(公告)号：US20150337496A1

公开(公告)日：2015-11-26

申请号：US14716153

申请日：2015-05-19

申请人： Georgia-Pacific Consumer Products LP

发明人： Jeffrey A. Lee

IPC分类号： D21H27/00 ,  D21H17/67 ,  D21H11/12 ,  D04H1/492 ,  D04H1/56 ,  D04H3/015 ,  D04H3/11 ,  D04H3/16 ,  D06L3/12 ,  D06L3/02 ,  D06L3/10 ,  A47L13/16 ,  A47L13/17 ,  D06B1/00 ,  D21H21/32

CPC分类号： D21H27/004 ,  A47L13/16 ,  A47L13/17 ,  D04H1/425 ,  D04H1/4266 ,  D04H1/492 ,  D04H1/56 ,  D04H3/015 ,  D04H3/11 ,  D04H3/16 ,  D06B1/00 ,  D06L4/13 ,  D06L4/30 ,  D10B2201/01 ,  D10B2201/02 ,  D10B2201/04 ,  D10B2201/06 ,  D10B2201/08 ,  D21C5/00 ,  D21C9/147 ,  D21C9/163 ,  D21C9/166 ,  D21H11/12 ,  D21H17/67 ,  D21H17/675 ,  D21H21/30 ,  D21H21/32 ,  D21H27/00 ,  Y10T442/60

摘要： The present invention is directed to a method of increasing the brightness of non-wood fibers and nonwoven fabric fabrics produced by the method. In one aspect, the method includes forming a mixture of non-wood fibers and exposing the mixture to a brightening agent to produce brightened fibers. The brightening agent is oxygen gas, peracetic acid, a peroxide compound, or a combination thereof. The brightened fibers have a brightness greater than the fibers of the mixture before exposure as measured by MacBeth UV-C standard.

摘要翻译： 本发明涉及通过该方法提高非木质纤维和非织造织物的亮度的方法。 在一个方面，该方法包括形成非木纤维的混合物，并将混合物暴露于增亮剂以产生增亮的纤维。 增亮剂是氧气，过乙酸，过氧化合物或其组合。 增亮的纤维的亮度比通过MacBeth UV-C标准测量的曝光前混合物的纤维亮度大。

公开(公告)号：US09163358B2

公开(公告)日：2015-10-20

申请号：US13393785

申请日：2010-08-31

申请人： Auvo Kettunen

发明人： Auvo Kettunen

IPC分类号： D21C11/00 ,  D21C9/04 ,  D21C9/147

CPC分类号： D21C11/0007 ,  D21C7/00 ,  D21C9/02 ,  D21C9/04 ,  D21C9/08 ,  D21C9/10 ,  D21C9/147 ,  D21C11/00 ,  D21C11/0028

摘要： A method of and an apparatus for processing cellulose pulp of wood processing industry. The method and assembly may be used, on one hand, as a pressure diffuser for washing the pulp before an oxygen stage and, on the other hand, the separation of soap, gas and/or other light materials from filtrates and from black liquor of a cellulose mill in a pressurized device, as well as the new process connections enabled by the method. The method and apparatus may process filtrates from brown stock washing and bleaching as well as black liquors from a digesting department and an evaporation plant. By way of example, the filtrate of the washing department is pumped to the digesting department of a sulfate cellulose mill as well as the black liquor taken from the digesting department to an evaporation plant.

摘要翻译： 木材加工业纤维素浆的加工方法及装置。 一方面，该方法和组件可以用作在氧气阶段之前洗涤纸浆的压力扩散器，另一方面，将肥皂，气体和/或其它轻质材料从滤液和黑液中分离出来 加压装置中的纤维素磨机，以及通过该方法实现的新工艺连接。 该方法和装置可以处理来自棕色洗涤和漂白的滤液以及来自消化部和蒸发装置的黑液。 例如，洗涤部的滤液被泵送到硫酸纤维素磨机的消化部以及从消化部取出的黑液到蒸发装置。