专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06007678A Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof 失效
标题翻译：含木素纤维素的纸浆与有机过酸或其盐脱木质素的方法
公开(公告)号：US06007678A
公开(公告)日：1999-12-28
申请号：US26510
申请日：1998-02-19
申请人： Magnus Linsten , Jiri Basta , Ann-Sofie Hallstrom
发明人： Magnus Linsten , Jiri Basta , Ann-Sofie Hallstrom
IPC分类号： D21C9/10 , D21C9/16 , D21C9/147 , D21C9/153
CPC分类号： D21C9/1057 , D21C9/1042 , D21C9/163 , D21C9/166
摘要： A process for the delignification and bleaching lignocellulosic-containing pulp, in which the pulp is delignified with an organic peracid or salts thereof, treated with a complexing agent, washed and subsequently bleached with a chlorine-free peroxide containing bleaching.
摘要翻译：木质纤维素脱木素纸浆的脱木素和漂白方法，其中纸浆与有机过酸或其盐脱木质素，用络合剂处理，洗涤并随后用含有漂白剂的无氯过氧化物漂白。

2. 发明授权

US5980717A Recovery process in a pulp mill 失效
标题翻译：纸浆厂的回收过程
公开(公告)号：US5980717A
公开(公告)日：1999-11-09
申请号：US999430
申请日：1997-12-29
申请人： Roland Pudas , Magnus Linsten , Roy Hammer-Olsen , Bjorn Svedin , Ingrid Velander
发明人： Roland Pudas , Magnus Linsten , Roy Hammer-Olsen , Bjorn Svedin , Ingrid Velander
IPC分类号： D21C11/00 , D21C11/06 , B01D59/42
CPC分类号： D21C11/066 , D21C11/005
摘要： A substantial and increasing problem with the pulping chemical recovery system, is the presence of chloride and potassium in the spent liquor entering the recovery boiler. Chloride and potassium increase the stickiness of carryover deposits and dust particles to the recovery boiler tubes, which accelerate fouling and plugging in the upper part of the recovery boiler. The present invention relates to a process by which the content of potassium ions in a recovery system for pulping chemicals can be reduced. The process comprises bringing spent liquor to a recovery boiler, burning said spent liquor, collecting precipitator dust formed, forming a solution by dissolving the precipitator dust in a liquid, where the solution of precipitator dust is subjected to a treatment with an inorganic ion exchange material in order to remove at least a part of the potassium therein.
摘要翻译：制浆化学回收系统的一个重大和日益严重的问题是进入回收锅炉的废液中存在氯化物和钾。氯化钾和钾离子增加了回收沉积物和灰尘颗粒对回收锅炉管的粘性，加速了回收锅炉上部的结垢和堵塞。本发明涉及一种可以减少用于制浆化学品的回收系统中的钾离子含量的方法。该方法包括将废液倒入回收锅炉中，燃烧废液，收集除尘器灰尘，通过将除尘器粉尘溶解在液体中形成溶液，将沉淀粉尘的溶液用无机离子交换材料进行处理以除去其中至少一部分钾。

3. 发明授权

US06398908B1 Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound 失效
标题翻译：用镁化合物对含木素纤维素的纸浆进行酸漂白的方法
公开(公告)号：US06398908B1
公开(公告)日：2002-06-04
申请号：US08754884
申请日：1996-11-22
申请人： Wenche Elisabeth Hermansson , Lennart Andersson , Magnus Linsten , Jiri Basta , Lillemor Holtinger
发明人： Wenche Elisabeth Hermansson , Lennart Andersson , Magnus Linsten , Jiri Basta , Lillemor Holtinger
IPC分类号： D21C910
CPC分类号： D21C9/163 , D21C9/1005 , D21C9/1036 , D21C9/153
摘要： A process for delignification and bleaching of chemically digested lignocellulose-containing pulp. In a first embodiment, the pulp is acid treated at a pH of between about 1 and about 6, whereupon a water-soluble compound containing an alkaline earth metal is added at a pH of between about 1 and about 7 before the pulp is treated with a chlorine-free bleaching agent. In a second embodiment, the acid and alkaline earth metal treatments are carried out in a single step. The chlorine-free bleaching agent includes peroxide compounds, ozone, oxygen and sodium dithionite in an optional sequence or mixture. After the treatment according to the invention, the pulp may be finally bleached to the desired brightness, suitably with a chlorine-free bleaching agent, such as ozone, to completely avoid formation and discharge of AOX.
摘要翻译：化学消化的含木素纤维素纸浆的脱木质素和脱色方法。在第一实施方案中，纸浆在约1至约6的pH下进行酸处理，于是在纸浆处理之前，在约1至约7的pH下加入含有碱土金属的水溶性化合物，无氯漂白剂。在第二个实施方案中，酸和碱土金属处理在一个步骤中进行。无氯漂白剂包括任选的顺序或混合物中的过氧化物，臭氧，氧和连二亚硫酸钠。在根据本发明的处理之后，可以最佳地将纸浆漂白至所需的亮度，适当地用无氯漂白剂如臭氧漂白，以完全避免AOX的形成和排出。

4. 发明授权

US5785812A Process for treating oxygen delignified pulp using an organic peracid or salt, complexing agent and peroxide bleach sequence 失效
标题翻译：使用有机过酸或盐，络合剂和过氧化物漂白剂序列处理氧脱木素的方法
公开(公告)号：US5785812A
公开(公告)日：1998-07-28
申请号：US436243
申请日：1995-05-17
申请人： Magnus Linsten , Jiri Basta , Ann-Sofie Hallstrom
发明人： Magnus Linsten , Jiri Basta , Ann-Sofie Hallstrom
IPC分类号： D21C20060101 , D21C9/10 , D21C9/153 , D21C9/16
CPC分类号： D21C9/153 , D21C9/1042 , D21C9/1057 , D21C9/163 , D21C9/166
摘要： A process for delignifying and bleaching lignocellulose-containing pulp, in which the pulp is delignified with a peracid or a salt thereof, treated with a complexing agent, and subsequently bleached with a chlorine-free bleaching agent. Suitably delignification is carried out with the strongly oxidizing peracetic acid, giving a considerable increase in brightness and a considerable reduction of the kappa number after bleaching with a chlorine-free bleaching agent comprising at least one of a peroxide-containing compound, ozone or sodium dithionite, or optional sequences or mixtures thereof. The brightness increasing effect is highly selective, i.e. the viscosity of the pulp is maintained to a comparatively great extent. Both the delignification and the treatment with a complexing agent are advantageously carried out at a close to neutral pH, thus minimizing the need of pH adjustment and making it possible to use spent bleach liquor internally, e.g. for washing the pulp. By final bleaching with ozone and hydrogen peroxide it is possible to produce softwood pulps having a brightness exceeding 90% ISO, and to remove practically all lignin in the pulp while maintaining sufficient pulp strength.
摘要翻译： PCT No.PCT / SE93 / 01019 Sec。 371日期1995年5月17日 102（e）日期1995年5月17日PCT 1993年11月25日PCT公布。第WO94 / 12721号公报日期1994年6月9日一种用于脱木素纤维素的纸浆脱木素和脱色的方法，其中用络合剂处理纸浆与过酸或其盐脱木质，随后用无氯漂白剂漂白。用强氧化性过乙酸进行合适的脱木质素，可以显着提高亮度，并且用含有过氧化物的化合物，臭氧或连二亚硫酸钠中的至少一种的无氯漂白剂漂白后显着降低卡伯值，或任选的序列或其混合物。亮度增加效果是高选择性的，即纸浆的粘度保持在较大程度上。螯合剂的脱木质素和处理都有利地在接近中性pH下进行，从而最小化pH调节的需要，并且可以在内部使用废漂白液，例如，用于清洗纸浆。通过用臭氧和过氧化氢进行最终漂白，可以生产亮度超过90％ISO的软木纸浆，并且几乎除去纸浆中的所有木质素，同时保持足够的纸浆强度。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式