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1. 发明授权

EP0754799B1 Leaching process 失效
标题翻译：浸出
公开(公告)号：EP0754799B1
公开(公告)日：1998-12-09
申请号：EP96201661.4
申请日：1996-06-14
申请人： Eka Chemicals AB
发明人： Landfors, Johan , Hammer-Olsen, Roy , Häggström, Kimona
IPC分类号： D21C11/06 , D21C11/12
CPC分类号： D21C11/125 , C02F1/469 , D21C11/066

2. 发明授权

EP0653511B1 Process for purification and recycle of solutions 失效
标题翻译：一种用于在循环中清洗并返回分辨率方法
公开(公告)号：EP0653511B1
公开(公告)日：1997-03-19
申请号：EP94203102.2
申请日：1994-10-26
申请人： Eka Chemicals AB
发明人： Landfors, Johan
IPC分类号： D21C11/00 , D21C11/10
CPC分类号： C02F1/4693 , B01D61/44 , C02F2201/46115 , D21C11/0042 , Y10S162/08

3. 发明公开

EP0728863A3 A process for treating liquids 失效
标题翻译：一种用于处理液体的方法
公开(公告)号：EP0728863A3
公开(公告)日：1998-03-04
申请号：EP96200339.8
申请日：1996-02-13
申请人： Eka Chemicals AB
发明人： Landfors, Johan , Persson, Christin
IPC分类号： D21C11/00 , B01D61/42
CPC分类号： C02F1/469 , B01D61/44 , C02F1/4693 , C02F2201/46115 , D21C11/0021 , D21C11/0042
摘要： This invention is related to a process for producing pulp from a cellulosic starting material, wherein an aqueous process effluent is purified from metal impurity cations. This process comprises that the effluent is purified by an electrochemical membrane treatment in an electrochemical membrane device comprising a unit cell through which an electric current is passed between an anode side and a cathode side of said cell, said cell comprising at least two ion permeable membranes forming between them at least one compartment, said effluent being fed into an effluent feed compartment in said cell, in which the effluent is purified by removing with the electric current metal impurity cations from the effluent through a cation selective membrane on the cathode side of said compartment, and withdrawing from said compartment the purified effluent. The purified effluent may be recirculated to the pulp mill process, e.g. as washing water.

4. 发明公开

EP0754799A3 Leaching process 失效
标题翻译：浸出过程
公开(公告)号：EP0754799A3
公开(公告)日：1997-03-26
申请号：EP96201661.4
申请日：1996-06-14
申请人： Eka Chemicals AB
发明人： Landfors, Johan , Hammer-Olsen, Roy , Häggström, Kimona
IPC分类号： D21C11/06 , D21C11/12
CPC分类号： D21C11/125 , C02F1/469 , D21C11/066
摘要： An increasing problem with the pulping chemical recovery system, is the presence of chloride and potassium in the recovery boiler. Chloride and potassium increase inter alia the stickiness of carryover deposits and dust particles to the recovery boiler tubes, which accelerate fouling, corrosion and plugging of the recovery boiler. As the environmental legislation becomes more stringent, the degree of system closure increases. The present invention relates to a process by which the collected precipitator dust (1) is leached (2), at a temperature exceeding 50°C, for a residence time sufficient to get a chloride and potassium enriched leach solution (4) and to remove at least a part of the content of metal ions in a solid phase (3). Said leach solution is electrochemically treated (5), preferably in an electrodialysis cell, in order to remove at least a part of the chloride and potassium therein. By the present process, the problem of sticky deposits in the recovery boiler can be substantially reduced. This means an improved energy efficiency as well as a higher degree of recovery of the pulping and bleaching chemicals.
摘要翻译：制浆化学回收系统存在的问题是回收锅炉中存在氯化物和钾。氯化物和钾会增加夹带沉积物和灰尘颗粒到回收锅炉管的粘性，这会加速回收锅炉的结垢，腐蚀和堵塞。随着环境立法越来越严格，系统关闭的程度越来越高。本发明涉及一种方法，其中在超过50℃的温度下将收集的沉淀器粉尘（1）浸出（2）足以获得富含氯化物和钾的浸出溶液（4）的停留时间并去除（3）中的至少一部分金属离子的含量。所述浸出溶液电化学处理（5），优选在电渗析池中，以除去其中的至少一部分氯化物和钾。通过本过程，回收锅炉中的粘性沉积物的问题可以大大减少。这意味着改进的能源效率以及制浆和漂白化学品的更高程度的回收率。

5. 发明授权

EP0612685B1 Process for producing chlorine dioxide 失效
标题翻译：一种生产二氧化氯的过程
公开(公告)号：EP0612685B1
公开(公告)日：1996-12-11
申请号：EP94200267.6
申请日：1994-02-02
申请人： Eka Chemicals AB
发明人： Falgén, Helena , Sundström, Göran , Landfors, Johan , Sokol, John C.
IPC分类号： C01B11/02 , C25B1/46
CPC分类号： C01B11/026

6. 发明授权

EP0728863B1 A process for treating liquids in pulp manufacturing 失效
标题翻译：一种用于生产纸浆的处理液体的方法
公开(公告)号：EP0728863B1
公开(公告)日：2002-01-23
申请号：EP96200339.8
申请日：1996-02-13
申请人： Eka Chemicals AB
发明人： Landfors, Johan , Persson, Christin
IPC分类号： D21C11/00 , B01D61/42
CPC分类号： C02F1/469 , B01D61/44 , C02F1/4693 , C02F2201/46115 , D21C11/0021 , D21C11/0042

7. 发明公开

EP0754799A2 Leaching process 失效
标题翻译： Auslaugungsverfahren
公开(公告)号：EP0754799A2
公开(公告)日：1997-01-22
申请号：EP96201661.4
申请日：1996-06-14
申请人： Eka Chemicals AB
发明人： Landfors, Johan , Hammer-Olsen, Roy , Häggström, Kimona
IPC分类号： D21C11/06 , D21C11/12
CPC分类号： D21C11/125 , C02F1/469 , D21C11/066
摘要： An increasing problem with the pulping chemical recovery system, is the presence of chloride and potassium in the recovery boiler. Chloride and potassium increase inter alia the stickiness of carryover deposits and dust particles to the recovery boiler tubes, which accelerate fouling, corrosion and plugging of the recovery boiler. As the environmental legislation becomes more stringent, the degree of system closure increases. The present invention relates to a process by which the collected precipitator dust (1) is leached (2), at a temperature exceeding 50°C, for a residence time sufficient to get a chloride and potassium enriched leach solution (4) and to remove at least a part of the content of metal ions in a solid phase (3). Said leach solution is electrochemically treated (5), preferably in an electrodialysis cell, in order to remove at least a part of the chloride and potassium therein. By the present process, the problem of sticky deposits in the recovery boiler can be substantially reduced. This means an improved energy efficiency as well as a higher degree of recovery of the pulping and bleaching chemicals.
摘要翻译：制浆化学回收系统越来越多的问题是回收锅炉中存在氯化物和钾。氯化物和钾尤其增加了回收沉积物和灰尘颗粒对回收锅炉管的粘性，这加速了回收锅炉的结垢，腐蚀和堵塞。随着环境立法变得越来越严格，系统关闭程度也越来越高。本发明涉及在超过50℃的温度下将收集的除尘器粉尘（1）浸出（2）达到足以获得氯化物和富钾浸出溶液（4）的停留时间并除去的方法在固相（3）中金属离子含量的至少一部分。所述浸出溶液优选在电渗析池中电化学处理（5），以除去其中的至少一部分氯化物和钾。通过本方法，可以显着降低回收锅炉中的粘性沉积物的问题。这意味着提高能源效率以及更高程度的制浆和漂白化学品的回收率。

8. 发明公开

EP0728863A2 A process for treating liquids 失效
标题翻译： Ein Verfahren zur Behandlung vonFlüssigkeiten
公开(公告)号：EP0728863A2
公开(公告)日：1996-08-28
申请号：EP96200339.8
申请日：1996-02-13
申请人： Eka Chemicals AB
发明人： Landfors, Johan , Persson, Christin
IPC分类号： D21C11/00 , B01D61/42
CPC分类号： C02F1/469 , B01D61/44 , C02F1/4693 , C02F2201/46115 , D21C11/0021 , D21C11/0042
摘要： This invention is related to a process for producing pulp from a cellulosic starting material, wherein an aqueous process effluent is purified from metal impurity cations. This process comprises that the effluent is purified by an electrochemical membrane treatment in an electrochemical membrane device comprising a unit cell through which an electric current is passed between an anode side and a cathode side of said cell, said cell comprising at least two ion permeable membranes forming between them at least one compartment, said effluent being fed into an effluent feed compartment in said cell, in which the effluent is purified by removing with the electric current metal impurity cations from the effluent through a cation selective membrane on the cathode side of said compartment, and withdrawing from said compartment the purified effluent. The purified effluent may be recirculated to the pulp mill process, e.g. as washing water.
摘要翻译：本发明涉及从纤维素原料生产纸浆的方法，其中从金属杂质阳离子纯化含水工艺流出物。该方法包括在电化学膜装置中通过电化学膜处理净化流出物，所述电化学膜装置包括在所述电池的阳极侧和阴极侧之间通过电流的单元电池，所述电池包括至少两个离子渗透膜在它们之间形成至少一个隔室，所述流出物被送入所述池中的流出物进料室，其中流出物通过从流出物中除去电流金属杂质阳离子而被纯化，所述阳离子通过阳离子选择性膜在所述阴极侧隔室，并从所述隔室取出纯化的流出物。纯化的流出物可以再循环到纸浆厂工艺，例如作为洗涤水。

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