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. 发明申请

WO1998032914A1 A CONTROL SCHEME FOR RAPID PULP DELIGNIFICATION AND BLEACHING 审中-公开
标题翻译：一种用于快速提取和漂白的控制方案
公开(公告)号：WO1998032914A1
公开(公告)日：1998-07-30
申请号：PCT/US1997001512
申请日：1997-02-05
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , PANGALOS, George , FALCONE, Ronald, A., Jr. , MAYO, William, L. , BOSCH, Gregory, J.
IPC分类号： D21C09/153
CPC分类号： D21C9/153 , D21C9/1052
摘要： A process control method for adjusting chemical application in response to the pulp brightness and/or lignin content is realized by utilizing a coupled control feedforward, feedback or combination feedforward/feedback control system, wherein brightness measurements are made between successive lignin content measurements and adjustments made to the chemical application in response to a comparison value.
摘要翻译：通过利用耦合的控制前馈，反馈或组合前馈/反馈控制系统来实现响应于纸浆亮度和/或木质素含量来调节化学应用的过程控制方法，其中在连续的木质素含量测量和调整之间进行亮度测量以化学应用为响应比较值。

2. 发明申请

WO1996034142A1 AMBIENT TEMPERATURE PULP BLEACHING WITH PEROXYACID SALTS 审中-公开
标题翻译：周期温度浆与过氧化氢的漂白
公开(公告)号：WO1996034142A1
公开(公告)日：1996-10-31
申请号：PCT/US1996003936
申请日：1996-03-21
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , ALI, Omar, F.
IPC分类号： D21C03/04
CPC分类号： D21C9/1057 , D21C9/166
摘要： The present invention relates to a Kraft pulp bleaching stage which is to be carried out after conventional bleaching stages to high brightness. It has been discovered that ambient-temperature blaching with inorganic peroxyacid salts, such as peroxymonosulfates, at this point can provide substantial increases in pulp brightness without significant decreases in pulp viscosity. Peroxyacid bleaching according to the present invention is carried out at ambient temperature and no greater than about 40 DEG C and at an initial pH that is slightly alkaline and preferably about 7.25.
摘要翻译：本发明涉及在常规漂白阶段进行至高亮度的牛皮纸浆漂白阶段。已经发现，在这一点上，无机过氧酸盐如过氧化硫酸盐的环境温度漂白可以提供纸浆亮度的显着增加，而纸浆粘度没有显着降低。根据本发明的过氧酸漂白在环境温度和不大于约40℃下进行，初始pH为稍微碱性，优选约7.25。

3. 发明申请

WO1992012288A1 SPLIT ALKALI ADDITION FOR HIGH CONSISTENCY OXYGEN DELIGNIFICATION 审中-公开
标题翻译：分离碱性添加剂用于高度一致的氧气脱色
公开(公告)号：WO1992012288A1
公开(公告)日：1992-07-23
申请号：PCT/US1992000102
申请日：1992-01-02
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , TERRETT, Stuart, T. , EACHUS, Spencer, W. , GRIGGS, Bruce, F.
IPC分类号： D21C09/10
CPC分类号： D21C9/1005 , D21C9/147
摘要： Unbleached pulp (8) is combined with an aqueous alkaline solution (10) while in a state of low consistency to distribute a first amount of alkaline material substantially uniformly throughout the pulp. The consistency of the pulp is then increased to above about 20 % (12). Additional alkali (18) is applied onto the high consistency pulp (17) to provide a total amount of between 0.8 and 7 % by weight of oven dry pulp. The high consistency alkali containing pulp is then treated with oxygen (21) to effect delignification (20). High strength, low lignin pulps are formed which may be further bleached (25) to high brightness with reduced amounts of chemicals by following the methods of the invention.

4. 发明申请

WO1997015712A3 HOT WATER EXTRACTION FOR PULP BLEACHING SEQUENCES 审中-公开
公开(公告)号：WO1997015712A3
公开(公告)日：1997-05-01
申请号：PCT/US1996017164
申请日：1996-10-24
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , PANGALOS, George
IPC分类号： D21C09/02

5. 发明申请

WO1996002697A1 IMPROVED BLEACHING OF HIGH CONSISTENCY LIGNOCELLULOSIC PULP 审中-公开
标题翻译：改进高度一致性细胞浆的漂白
公开(公告)号：WO1996002697A1
公开(公告)日：1996-02-01
申请号：PCT/US1995008691
申请日：1995-07-11
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , GANDEK, Thomas, P.
IPC分类号： D21C01/10
CPC分类号： D21C9/007 , D21C9/1005 , D21C9/153
摘要： The present invention pertains to a method having increased selectivity for bleaching lignocellulosic pulp having a high consistency from a first GE brightness to a second, higher GE brightness which comprises the steps of (a) fluffing the high consistency pulp having the first GE brightness to a specific surface area of at least about 90 m /kg; and (b) contacting the fluffed pulp with a gaseous bleaching agent to form a bleached pulp having the second, higher GE brightness, wherein the pulp fluffing in step (a) and the pulp bleaching in step (b) are carried out substantially simultaneously. The present invention also pertains to a bleached lignocellulosic pulp prepared by the method of the present invention.
摘要翻译：本发明涉及一种具有从第一GE亮度到第二高亮度的具有高稠度的漂白木质纤维素纸浆的选择性提高的方法，其包括以下步骤：（a）将具有第一GE亮度的高浓度纸浆起绒于至少约90m 2 / kg的比表面积; 和（b）将起毛纸浆与气态漂白剂接触以形成具有第二较高GE亮度的漂白纸浆，其中步骤（a）中的纸浆起毛和步骤（b）中的纸浆漂白）基本上同时进行。本发明还涉及通过本发明的方法制备的漂白的木质纤维素纸浆。

6. 发明申请

WO1994008087A1 IMPROVED BLEACHING OF HIGH CONSISTENCY LIGNOCELLULOSIC PULP 审中-公开
标题翻译：改进高度一致性细胞浆的漂白
公开(公告)号：WO1994008087A1
公开(公告)日：1994-04-14
申请号：PCT/US1993009230
申请日：1993-09-28
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , GANDEK, Thomas, P.
IPC分类号： D21C09/153
CPC分类号： D21C9/153 , D21C9/007
摘要： The present invention pertains to a method having increased selectivity for bleaching lignocellulosic pulp having a high consistency from a first GE brightness to a second, higher GE brightness which comprises the steps of (a) fluffing the high consistency pulp having the first GE brightness to a specific surface area of at least about 90m2/kg; and (b) contacting the fluffed pulp with a gaseous bleaching agent to form a bleached pulp having the second, higher GE brightness. The present invention also pertains to a bleached lignocellulosic pulp prepared by the method of the present invention.
摘要翻译：本发明涉及一种具有从第一GE亮度到第二高亮度的具有高稠度的漂白木质纤维素纸浆的选择性提高的方法，其包括以下步骤：（a）将具有第一GE亮度的高浓度纸浆起绒于比表面积至少约90m2 / kg; 和（b）使起毛浆与气态漂白剂接触以形成具有第二较高GE亮度的漂白纸浆。本发明还涉及通过本发明的方法制备的漂白的木质纤维素纸浆。

7. 发明申请

WO1992007999A1 PULP BLEACHING REACTOR AND METHOD 审中-公开
标题翻译： PULP漂白反应器和方法
公开(公告)号：WO1992007999A1
公开(公告)日：1992-05-14
申请号：PCT/US1991007870
申请日：1991-10-25
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , WHITE, David, E. , PIKULIN, Michael, A. , GANDEK, Thomas, P. , FRIEND, William, H.
IPC分类号： D21C09/153
CPC分类号： B01F7/00141 , B01F7/001 , B01F7/00433 , D21C9/10 , D21C9/153
摘要： An apparatus and method for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine. The bleaching reactor is a horizontal vessel having a central rotatable shaft which preferably contains paddles, cut and folded screw flights or a ribbon flight, to disperse and advance the pulp particles in a plug flow manner while contacting and mixing the pulp particles with a gaseous bleaching agent such as ozone for substantially uniform bleaching thereof.

8. 发明申请

WO1995009944A1 DESCALING BY REGULATING pH AND SALT CONCENTRATION 审中-公开
标题翻译：通过调节pH和盐浓度来降解
公开(公告)号：WO1995009944A1
公开(公告)日：1995-04-13
申请号：PCT/US1994010632
申请日：1994-09-20
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , GANDEK, Thomas, P. , JOSEPH, James, C. , PIKULIN, Michael, A. , PANGALOS, George , BOWDEN, Philip, E.
IPC分类号： D21C03/02
CPC分类号： D21C9/008 , D21C9/1057 , D21C9/147 , D21C9/153 , D21C11/0028 , Y10S162/08
摘要： A method for reducing or eliminating the formation of salt scale upon process equipment caused by precipitation of insoluble salts during the bleaching of pulp. The pulp is subjected to a bleaching sequence which includes a plurality of pulp treatment steps, wherein at least one pulp treatment step is conducted under alkaline conditions and at least one pulp treatment step is conducted under acidic conditions. A filtrate stream which contains dissolved insoluble salts therein is thus generated, and at least a portion of the filtrate stream (56) is combined with an alkaline stream (205, 210, 215, 220, 225) and pulp to cause the salts to associate with the pulp, thus removing the salts from the filtrate stream to reduce or eliminate the formation of salt scale upon process equipment during the bleaching of the pulp.
摘要翻译：一种减少或消除在漂白纸浆期间沉淀不溶性盐造成的加工设备上盐垢形成的方法。对纸浆进行漂白处理，其中包括多个纸浆处理步骤，其中至少一个纸浆处理步骤在碱性条件下进行，并且在酸性条件下进行至少一个纸浆处理步骤。因此产生其中含有溶解的不溶性盐的滤液流，并且将滤液流（56）的至少一部分与碱性流（205,210,215,220,225）和纸浆组合以使盐结合与纸浆，从而从滤液流中除去盐，以减少或消除在漂白纸浆过程设备时形成盐垢。

9. 发明申请

WO1995006773A1 MEDIUM CONSISTENCY OZONE BRIGHTENING OF HIGH CONSISTENCY OZONE BLEACHED PULP 审中-公开
标题翻译：中等稠度臭氧浓度高度一致的臭氧漂白浆
公开(公告)号：WO1995006773A1
公开(公告)日：1995-03-09
申请号：PCT/US1994010050
申请日：1994-09-01
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , EACHUS, Spencer, W. , ALI, Omar, F. , PANGALOS, George , GRIGGS, Bruce, F. , GANDEK, Thomas, P. , PIKULIN, Michael, A. , ROSEN, Allen
IPC分类号： D21C09/153
CPC分类号： D21C9/153 , D21C9/1057 , D21C9/147 , D21C9/163
摘要： A process for delignifying and bleaching a lignocellulosic material (2) without the use of elemental chlorine or chlorine-containing compounds by forming (4) a pulp, oxygen delignifying (40) the pulp and thereafter further delignifying the oxygen delignified pulp by lifting, displacing and tossing the pulp in a radial direction while advancing it in an axial direction in a plug fow-like manner with an effective amount of ozone (88) for a sufficient time to obtain a substantially delignified pulp having a GE brightness of at least about 35 %. The substantially delignified pulp may then be brightened to a final product by treating the pulp with a brightening stage peroxide compound, followed by subsequently treating the pulp at low to medium consistency with ozone.
摘要翻译：一种木质纤维素材料（2）的脱木素和漂白方法，不使用元素氯或含氯化合物，通过形成（4）纸浆，氧脱木质（40）纸浆，然后进一步脱木质化脱木素的纸浆，通过提升，置换并且在径向方向上将纸浆倾斜，同时以有效量的臭氧（88）在塞子方向上以轴向方向推进足够的时间以获得具有至少约35的GE亮度的基本上脱木素的纸浆％。然后通过用增亮阶段过氧化物处理纸浆，然后随后用臭氧以低至中等稠度处理纸浆，将基本上脱木素的纸浆变亮至最终产品。

10. 发明申请

WO1994011570A1 METHOD FOR CONTROLLING AN OZONE BLEACHING PROCESS 审中-公开
标题翻译：用于控制臭氧漂白过程的方法
公开(公告)号：WO1994011570A1
公开(公告)日：1994-05-26
申请号：PCT/US1993010686
申请日：1993-11-08
申请人： UNION CAMP PATENT HOLDING, INC.
发明人： UNION CAMP PATENT HOLDING, INC. , MCDONALD, George, W.
IPC分类号： D21C09/153
CPC分类号： D21C9/153 , C01B13/11 , C01B2201/50 , D21C11/06
摘要： A method for controlling the gas recycle loop of an ozone bleaching process wherein an ozone generator (18) produces an ozone containing gas from an oxygen containing feed gas (74) and delivers the ozone containing feed gas to an ozone reactor (22) at a variable flow rate responsive to reactor demand. Pulp (20) is bleached with the ozone containing gas, thereby producing an exhaust gas (38) having a flow rate that varies in response to the flow rate of the ozone gas delivered to the ozone reactor. The exhaust gas (38) is then recovered and its flow rate is modified within the recycle loop so that an amount equivalent to reactor ozone demand is returned to the ozone generator. The oxygen content of the oxygen containing feed gas is monitored at or near the inlet of the ozone generator and an amount of fresh oxygen is supplied to the oxygen containing feed gas (74) to obtain a predetermined level of oxygen therein.
摘要翻译：一种用于控制臭氧漂白过程的气体循环回路的方法，其中臭氧发生器（18）从含氧进料气体（74）产生含臭氧的气体，并将含臭氧的进料气体输送到臭氧反应器（22）响应于反应堆需求的可变流量。用含臭氧气体漂洗纸浆（20），从而产生具有响应于输送到臭氧反应器的臭氧气体的流量而变化的流量的废气（38）。废气（38）然后被回收，并且其流量在循环回路内被修改，使得等同于反应堆臭氧需求的量返回到臭氧发生器。在臭氧发生器的入口处或附近监测含氧进料气体的氧含量，并且向含氧进料气体（74）供应一定量的新鲜氧气以在其中获得预定水平的氧气。

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