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1. 发明申请

WO2003016616A1 PROCESS FOR LEACHING ELECTRICAL FILTER ASH FROM A RECOVERY BOILER 审中-公开
标题翻译：从回收锅炉中浸取电动过滤器的方法
公开(公告)号：WO2003016616A1
公开(公告)日：2003-02-27
申请号：PCT/SE2002/001405
申请日：2002-07-23
申请人： KVAERNER PULPING AB , WIMBY, Martin , OLAUSSON, Lars , ERIKSSON, Mikael
发明人： WIMBY, Martin , OLAUSSON, Lars , ERIKSSON, Mikael
IPC分类号： D21C11/06
CPC分类号： D21C11/066
摘要： The invention relates to a process for purifying electrical filter ash from chlorides, in particular, by means of leaching and subsequently separating off crystallized substance, which crystallized substance is returned to the process for forming black liquor. A good separation of solid phase in the form of crystalline Na 2 S0 4 is obtained by means of a repeated gentle agitation of slurried electrical filter ash in a leaching tank with a total dwell time of between 1 and 5 hours, directly followed by centrifugation of the leached electrical filter ash. The solid phase is supplied to the black liquor prior to final evaporation and/or recovery in the recovery boiler. More than 70 % of the chloride content in the electrical filter ash and 70 % of the potassium content are efficiently leached out, and an improved utilization of process chemicals is obtained.
摘要翻译：本发明涉及一种用于从氯化物净化电灰尘的方法，特别是通过浸出和随后分离出结晶物质的方法，该结晶物质返回到形成黑液的过程中。通过在总停留时间为1至5小时之间的浸出槽中重复轻轻搅拌浆状电过滤灰，获得呈结晶Na 2 SO 4形式的固相的良好分离，直接离心分离的电化学过滤灰在回收锅炉中最终蒸发和/或回收之前，将固相供给黑液。电除尘器中70％以上的氯化物含量和70％的钾含量被有效地浸出，从而获得了改进的工艺化学品利用率。

2. 发明申请

WO2013070130A1 METHOD FOR LIGNIN SEPARATION FROM BLACK LIQUOR INVOLVING MULTIPLE ACIDIFICATION STEPS 审中-公开
标题翻译：涉及多种酸化步骤的黑色液体的木质素分离方法
公开(公告)号：WO2013070130A1
公开(公告)日：2013-05-16
申请号：PCT/SE2011/051360
申请日：2011-11-11
申请人： METSO POWER AB , WIMBY, Martin , SVENSSON, Mattias , WALLMO, Henrik , ÖHMAN, Fredrik , TOMANI, Per , ÅKERLUND, Lars-Erik
发明人： WIMBY, Martin , SVENSSON, Mattias , WALLMO, Henrik , ÖHMAN, Fredrik , TOMANI, Per , ÅKERLUND, Lars-Erik
IPC分类号： D21C11/00 , C08H8/00
CPC分类号： D21C11/0007 , C08H6/00 , C08H8/00 , C08L97/005 , C08L2205/18 , Y02P40/44
摘要： The present invention relates to a method for separation of lignin from original black liquor (BL IN ) comprising the following phases in sequence; a first precipitation phase (PR1 ) for precipitation of lignin by a first acidification of the original black liquor by adding a first acid or mixture of acids (G 1a ); followed by a first storage phase wherein precipitated lignin particles are allowed to increase in size, followed by a second precipitation phase (PR2) for precipitation of lignin by a further acidification of the original black liquor by adding a second acid or mixture of acids (G 1b ). By retaining the acidified black liquor for at least 25 minutes in the storage phase are the precipitated lignin particles allowed to grow in size and the filterability is improved considerably.
摘要翻译：本发明涉及一种从原始黑液（BLIN）中分离木质素的方法，其中包括以下阶段：用于通过加入第一种酸或酸的混合物（G1a）首次酸化原始黑液来沉淀木质素的第一沉淀相（PR1）; 随后是其中允许沉淀的木质素颗粒大小增加的第一储存阶段，随后是用于通过加入第二种酸或酸的混合物（G1b）进一步酸化原始黑液来沉淀木质素的第二沉淀相（PR2））。通过在储存阶段保留酸化的黑液至少25分钟，允许沉淀的木质素颗粒尺寸增长，并且过滤性明显改善。

3. 发明申请

WO2013002687A1 METHOD FOR LIGNIN SEPARATION FROM BLACK LIQUOR COMPRISING REMOVAL OF SULPHUR COMPOUNDS FROM FORMED WATER EFFLUENT 审中-公开
标题翻译：从包含从形成的水流中除去硫化合物的黑色液体的木质素分离方法
公开(公告)号：WO2013002687A1
公开(公告)日：2013-01-03
申请号：PCT/SE2011/050861
申请日：2011-06-28
申请人： METSO POWER AB , WALLMO, Henrik , WIMBY, Martin
发明人： WALLMO, Henrik , WIMBY, Martin
IPC分类号： D21C11/00 , C07G1/00 , C08H8/00
CPC分类号： C07G1/00 , C08H6/00 , C08H8/00 , D21C11/0007 , Y02P40/44
摘要： The present invention relates to a method for separation of lignin from original black liquor (BLIN) comprising a first precipitation phase (PR1/PR2) for precipitation of lignin by a first acidification using acidifier, CO 2 , at alkaline conditions, then separating a lignin cake with subsequent suspension of the lignin cake in a strong acid in order to leach our metals from the lignin followed by dewatering and obtaining a clean lignin product LP. According to the invention is the acidic liquid phase (FL 1 ) subjected to a sulphur removal process wherein a calcium containing compound is added to the acidic liquid phase, whereby sulphur in the acidic liquid phase is reacting with the calcium compound forming solid gypsum which could be separated and bled off from the process. The remaining acidic liquid could then be returned to the recovery process without negatively affecting the sulphur balance of the mill.
摘要翻译：本发明涉及一种用于从原始黑液（BLIN）分离木质素的方法，其包括用于在碱性条件下使用酸化剂CO 2首先酸化沉淀木质素的第一沉淀相（PR1 / PR2），然后分离木质素饼随后将木质素饼块悬浮在强酸中以从木质素中浸出我们的金属，随后脱水并获得干净的木质素产物LP。根据本发明，经过硫去除方法的酸性液相（FL1），其中向酸性液相中加入含钙化合物，其中酸性液相中的硫与形成固体石膏的钙化合物反应，固体石膏可以是从流程中分离出来。剩余的酸性液体然后可以返回到回收过程，而不会不利地影响研磨机的硫平衡。

4. 发明申请

WO2011002354A1 PROCESS FOR IMPROVED LEACHING OF ELECTROSTATIC PRECIPITATOR ASH FROM A RECOVERY BOILER 审中-公开
标题翻译：改善蒸发锅炉静电浸出液浸出的方法
公开(公告)号：WO2011002354A1
公开(公告)日：2011-01-06
申请号：PCT/SE2009/050493
申请日：2009-05-06
申请人： METSO POWER AB , WIMBY, Martin , NUNES, Joana
发明人： WIMBY, Martin , NUNES, Joana
IPC分类号： D21C11/06 , B01D43/00 , B01D53/74 , B01D53/80
CPC分类号： D21H13/00 , D21C11/06
摘要： The invention relates to a process for purifying recovery boiler electrostatic precipitator ash (via 19) from chlorides (Cl) and potassium (K), and recover useful pulping chemicals such sodium sulphate (Na 2 SO 4 ). The inventive process uses two centrifugal separation stages (2a, 2b) in series with a leaching stage (1 a and 1 b) ahead of each centrifugal stage. The chlorides and potassium is bled out (26) with the first liquid fraction (LF1 ) from the first centrifugal separation stage and the final second dry matter substance (DM2) with enriched sodium sulphate content from the second centrifugal separation stage is sent (24) to the liquor recovery cycle, mixed into black liquor before the black liquor is being sent to the recovery process for reuse of the sodium sulphate in the pulping process. With the inventive process losses of sodium sulphate could be reduced significantly compared to a one stage leach-and-centrifuge process.
摘要翻译：本发明涉及一种从氯化物（Cl）和钾（K）中纯化回收锅炉静电除尘器灰（通过19）的方法，并回收有用的制浆化学品如硫酸钠（Na 2 SO 4）。本发明的方法使用两个离心分离级（2a，2b）与每个离心级前面的浸出级（1a和1b）串联。从第一离心分离阶段向第一液体馏分（LF1）排出氯化物和钾，并从第二离心分离阶段送出富含硫酸钠的最终第二干物质（DM2）（24）在白酒回收循环中，在黑液被送入回收过程中混合成黑液，以在制浆过程中再次使用硫酸钠。利用本发明方法，与一步式浸出 - 离心机方法相比，硫酸钠的损失可以显着降低。

5. 发明申请

WO2010143997A1 METHOD FOR PRECIPITATING LIGNIN FROM BLACK LIQUOR BY UTILIZING WASTE GASES 审中-公开
标题翻译：通过使用废气来从黑液中提取木瓜的方法
公开(公告)号：WO2010143997A1
公开(公告)日：2010-12-16
申请号：PCT/SE2009/000291
申请日：2009-06-10
申请人： METSO POWER AB , LITTORIN, Anders , WALLMO, Henrik , NORBERG, Hanna , WIMBY, Martin
发明人： LITTORIN, Anders , WALLMO, Henrik , NORBERG, Hanna , WIMBY, Martin
IPC分类号： D21C11/04 , D21C11/00 , D21C11/08
CPC分类号： C07G1/00 , D21C11/0007 , D21C11/0085 , D21C11/04
摘要： The present invention relates to a method for separation of lignin from original black liquor comprising the following steps in sequence: a) Precipitation of lignin by a first acidification stage of the original black liquor, b) followed by dewatering while forming a first filter cake with high content of lignin, c) suspending the first lignin filter cake obtained in step b in a second acidification stage, d) whereupon a second lignin suspension is obtained, e) dewatering of the second lignin suspension forming a second filter cake with high content of lignin, f) washing the second filter cake water and finally, g) dewatering of the washed second lignin cake obtaining a lignin product. According to the invention is the waste gases emitted from the second acidification stage re-circulated and mixed with the original black liquor at the latest in the first acidification stage. By this recirculation is a waste gas disposal problem solved while also reducing the amount of fresh acidifier charged in the first acidification stage.
摘要翻译：本发明涉及一种从原始黑液中分离木质素的方法，其顺序包括以下步骤：a）通过原始黑液的第一酸化阶段沉淀木质素，b）随后脱水，同时形成第一滤饼，高含量的木质素，c）在第二酸化阶段中将步骤b中获得的第一木质素滤饼悬浮，d）由此得到第二木质素悬浮液，e）第二木质素悬浮液的脱水，形成具有高含量木质素，f）洗涤第二滤饼水，最后，g）洗涤的第二木质素饼脱水获得木质素产物。根据本发明，最初在第一酸化阶段从第二酸化阶段排出的废气与原来的黑液再循环混合。通过这种再循环是解决废气处理问题，同时还减少了在第一酸化阶段中加入的新鲜酸化剂的量。

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