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41. 发明公开

EP1337315A2 VERFAHREN ZUR REINIGUNG VON ABGAS AUS EINER ZELLSTOFFABRIK 有权
标题翻译：步骤中使用一个纸浆厂清洁尾气
公开(公告)号：EP1337315A2
公开(公告)日：2003-08-27
申请号：EP01984791.2
申请日：2001-11-30
申请人： Linde Aktiengesellschaft
发明人： DIETRICH, Wolfgang , HILLER, Hans
IPC分类号： B01D53/78 , B01D53/86 , B01D47/10 , D21C11/06
CPC分类号： B01D47/10 , B01D53/78 , B01D53/8675 , D21C9/10 , D21C11/06
摘要： The invention relates to a method and device for the treatment of waste gas from a cellulose production, in particular, for treatment of the waste gases from a bleaching reactor (1), whereby aerosols in the waste gases are removed (4) and gaseous contaminants are scrubbed from the waste gas by means of a scrubbing fluid.

42. 发明授权

EP1144757B1 A METHOD OF CLEANING SULFIDE CONTAMINATED CONDENSATES 有权
标题翻译：清理方法与硫化氢污染凝聚的
公开(公告)号：EP1144757B1
公开(公告)日：2003-02-05
申请号：EP99963745.7
申请日：1999-11-24
申请人： Excelentec Holding AB
发明人： SANDQUIST, Kent, K. , WENNBERG, Olle
IPC分类号： D21C11/08 , D21C11/06
CPC分类号： D21C11/08 , D21C11/06
摘要： A method to remove sulphides and other volatile contaminants from liquor vapor condensate in a pulp manufacturing process, where the mentioned liquor vapor condensate is fed into a stripper, which is part of a closed loop system comprising said stripper, a regenerative thermal oxidization process (RTO) and a SO2 scrubber, in which loop a gas is circulated, preferably air and such components formed or stripped off, in this loop whereafter the circulating gas is stripping off sulphides and other volatile components from the liquor vapor condensate, whereafter the gas stream is fed into an RTO process, where the stripped off contaminants are combusted are under formation of SO2 and thereafter the SO2 enriched gas is led to a SO2 scrubber, where preferably alkali is used as absorption medium, and thereafter the circulating gas is returned back into the stripper.

43. 发明授权

EP0859884B1 PROCESS FOR PURIFYING CONDENSATE WHILE EVAPORATING WASTE LIQUORS 失效
标题翻译：方法排水沟清洁白酒的扩展
公开(公告)号：EP0859884B1
公开(公告)日：2002-02-06
申请号：EP96937613.6
申请日：1996-10-21
申请人： KVAERNER PULPING AB
发明人： OLAUSSON, Lars , PETTERSSON, Lars , WENNBERG, Olle , WERNQVIST, Anders
IPC分类号： D21C11/10 , D21C11/06
CPC分类号： D21C11/06 , D21C11/10 , Y10S159/08
摘要： The invention relates to a process for evaporating spent liquor or other waste liquids from cellulose cooking. The evaporation is performed in a multiplicity of evaporators which are coupled in series and in which the evaporation is driven using liquor steam. The condensates from the steam are divided, in one or more effects, into at least two fractions with respect to purity. The invention is characterized in that the purer fraction from one effect is conveyed, at a high level, into a subsequent effect in the direction of movement of the liquor, while the dirtier fraction is conveyed, at a high level or at the very top, into a preceding effect in the direction of movement of the liquor.

44. 发明授权

EP0843757B1 METHOD FOR REPROCESSING AN OZONE-CONTAINING GAS PRESENT IN A PULP BLEACHING PLANT 失效
标题翻译：法治疗臭氧AGAIN含气厂纸浆漂白剂
公开(公告)号：EP0843757B1
公开(公告)日：1999-10-20
申请号：EP96927319.2
申请日：1996-08-06
申请人： BELOIT TECHNOLOGIES, INC.
发明人： ROUNSAVILLE, Jeffrey , MINAMI, Shusuke
IPC分类号： D21C9/153 , D21C11/06
CPC分类号： D21C11/06 , D21C9/153
摘要： A method for reprocessing an ozone-containing gas present in a pulp bleaching plant comprising the steps of supplying the ozone-containing gas to a scrubber and reducing the ozone concentration of the gas as the gas flows through the scrubber. The step of reducing comprises the steps of supplying an alkaline medium to the scrubber and flowing the ozone-containing gas in countercurrent relationship with the alkaline medium within the scrubber so as to provide intimate contact between the ozone-containing gas and the alkaline medium, thereby converting the ozone-containing gas into a substantially ozone-free gas. The alkaline medium may comprise one of the following: a sodium hydroxide solution; white liquor; post oxygen stage filtrate; weak black liquor; or filtrate from an Eo stage of the pulp bleaching plant. The method further comprises the step of separately discharging the ozone-containing gas and the alkaline medium from the scrubber. The ozone-containing gas may comprise an off-gas, which has been partially reacted with a pulp within a pulp bleaching stage or alternatively may comprise fresh bleaching gas, having an ozone concentration ranging from about 6 % to about 14 % by weight within a carrier gas, with the fresh bleaching gas being supplied directly from an ozone generator to the scrubber.

45. 发明授权

EP0738343B1 A METHOD OF RECOVERING ENERGY AND CHEMICALS FROM BLACK LIQUOR 失效
标题翻译：一种获得能源和化学品SCHWARZL EYE
公开(公告)号：EP0738343B1
公开(公告)日：1999-09-29
申请号：EP92910608.6
申请日：1992-02-05
申请人： Ahlstrom Machinery Oy
发明人： RYHAM, Rolf , Smith, James W.,
IPC分类号： D21C11/00 , D21C11/06 , D21C11/14 , D21C11/12
CPC分类号： D21C11/06 , D21C11/0071 , D21C11/04 , D21C11/125 , Y02P40/44 , Y02P70/24
摘要： A method and apparatus for treating black liquor generated in a sulfate pulping process to recover energy and chemicals therefrom includes heating (4) the black liquor (2) at a temperature and for a time period to produce substantial volumes of off gases (7) containing organic sulfur compounds; generating hydrogen sulfide (9) and preferably methane from the off gases; and utilizing the generated hydrogen sulfide in the sulfate pulping process. The hydrogen sulfide can be absorbed (13) into white liquor (15) to selectively control the sulfur content of the white liquor. The methane (31) is used as fuel in a lime reburning kiln (16).

46. 发明公开

EP0908554A1 Process for recovering alkali and energy from black liquor containing silicate 有权
标题翻译： Verfahren zurRückgewinnungvon Alkali和Energie ausSilikathältigerSchwarzlauge
公开(公告)号：EP0908554A1
公开(公告)日：1999-04-14
申请号：EP98660100.3
申请日：1998-10-09
申请人： JAAKKO PÖYRY OY
发明人： Myréen, Bertel
IPC分类号： D21C11/04 , D21C11/06 , D21C11/10 , D21C11/12
CPC分类号： D21C11/06 , D21C11/04 , D21C11/106 , D21C11/12 , Y02P40/44 , Y02P70/24
摘要： The invention relates to a process for recovering alkali and heat from a black liquor (5) containing silicate from a soda cook of e.g. grass, reed, straw and bagasse. In the process the black liquor (5) is treated with a gas (6) containing carbon dioxide to precipitate silica and lignin, the precipitate (9) is separated (2) from the black liquor, which is evaporated (3) and burnt (4) to generate heat and to recover a sodium carbonate melt.
In the invention the black liquor (5) containing silicate is neutralised with a surplus of the gas (6) containing carbon dioxide, which preferably contains over 60% by volume of carbon dioxide. The evaporation (3) of black liquor mainly takes place after the precipitate (9) rich in silica has been separated (2). The combustion is performed with pure oxygen gas or oxygen-enriched air (14), after the black liquor has been brought to a temperature near its boiling point by direct contact with the hot exhaust gases from combustion, all these operations under a substantial over-pressure of at least 100 kPa. With this procedure, a sodium carbonate melt is recovered and a gas (17) containing over 60% by volume of carbon dioxide is formed, which is used to neutralise the black liquor (5) containing silicate.
摘要翻译：本发明涉及一种从含有硅酸钠的黑液（5）中回收碱和热的方法，该方法由例如苏打锅的苏打锅烹调。草，芦苇，稻草和甘蔗渣。在此过程中，用含有二氧化碳的气体（6）处理黑液（5）以沉淀二氧化硅和木质素，将沉淀物（9）与蒸发（3）和燃烧的黑液（2）分离（2） 4）产生热量并回收碳酸钠熔体。在本发明中，含有硅酸盐的黑液（5）被含有二氧化碳的多余的气体（6）中和，二氧化碳优选含有超过60体积％的二氧化碳。黑液的蒸发（3）主要发生在富含二氧化硅的沉淀物（9）分离后（2）。用纯氧气或富氧空气（14）进行燃烧，在黑液通过与来自燃烧的热废气直接接触使黑液达到接近沸点的温度之后进行燃烧，压力至少为100kPa。通过该方法，回收碳酸钠熔体，形成含有超过60体积％的二氧化碳的气体（17），用于中和含有硅酸盐的黑液（5）。

47. 发明公开

EP0738343A4 A METHOD OF RECOVERING ENERGY AND CHEMICALS FROM BLACK LIQUOR 失效
标题翻译：一种获得能源和化学品SCHWARZL EYE
公开(公告)号：EP0738343A4
公开(公告)日：1997-02-26
申请号：EP92910608
申请日：1992-02-05
申请人： AHLSTROEM OY
发明人： RYHAM ROLF , SMITH JAMES W
IPC分类号： D21C11/00 , D21C11/04 , D21C11/06 , D21C11/12 , D21C11/14
CPC分类号： D21C11/06 , D21C11/0071 , D21C11/04 , D21C11/125 , Y02P40/44 , Y02P70/24
摘要： A method and apparatus for treating black liquor generated in a sulfate pulping process to recover energy and chemicals therefrom includes heating (4) the black liquor (2) at a temperature and for a time period to produce substantial volumes of off gases (7) containing organic sulfur compounds; generating hydrogen sulfide (9) and preferably methane from the off gases; and utilizing the generated hydrogen sulfide in the sulfate pulping process. The hydrogen sulfide can be absorbed (13) into white liquor (15) to selectively control the sulfur content of the white liquor. The methane (31) is used as fuel in a lime reburning kiln (16).

48. 发明公开

EP0693145A1 PROCESS FOR CONVERTING SODIUM SULPHATE 失效
标题翻译： PROCESS FOR氯化钠的转换
公开(公告)号：EP0693145A1
公开(公告)日：1996-01-24
申请号：EP94912988.0
申请日：1994-03-31
申请人： AUSTRIAN ENERGY & ENVIRONMENT SGP/WAAGNER-BIRO GmbH
发明人： BOBIK, Michael , CHYBIN, Dieter , GLASNER, Alfred , TAFERNER, Karin
IPC分类号： D21C11
CPC分类号： D21C11/12 , D21C11/0071 , D21C11/04 , D21C11/06 , D21C11/066 , D21C11/127
摘要： To recover the sodium-sulphur compounds following sodium-based pulp processing, e.g. the ASAM process or basic or acidic sodium sulphite processes, the waste liquor is burnt in a lye burning vat (1) with liquid slag extraction and the exhaust gases are subjected to multi-stage purification with dry fly-ash recovery and the gaseous sulphur compounds are also separated in a multi-stage washing process. The water-soluble components of the fly-ash are taken to the waste liquor to be burnt and thus the sulphur to be recovered in the slag is increased. The slag is dissolved in water and the dissolved sodium compounds are converted by multi-stage carbonisation with a part of the purified flue gas into sodium bicarbonate and H2S. The H2S is burnt and finally converted into sodium sulphite so that the desired lye for pulping cellulose can be made up from sodium sulphite and carbonate.

49. 发明授权

EP0139736B1 PULP WASHING PROCESS 失效
标题翻译： PULP洗涤过程
公开(公告)号：EP0139736B1
公开(公告)日：1987-06-16
申请号：EP84901817.1
申请日：1984-04-11
申请人： ANDERSSON, Alf Ove
发明人： ANDERSSON, Alf Ove
IPC分类号： D21C9/02
CPC分类号： D21C9/02 , D21C11/06 , Y02P70/24
摘要： Process for the washing of pulp with a maximum recovery of energy, the pulp after digestion being washed in a plurality of successive washing steps (1-5) at a pressure above atmospheric in at least one of the steps and washing filtrate from a following step or fresh water being used as diluting and washing liquid in a given step. According to the invention, outgoing washing filtrate from the washing step should be heat exchanged against incoming diluting and washing liquid to the subsequent step and a part of the filtrate (21) from the second step should be heat exchanged against washing filtrate (10) from the first step and then be combined with cooking liquor (23) for the digestion of the pulp. As diluting and washing liquids in the last two steps (4, 5), fresh water is used, which has also been heat exchanged against outgoing washing filtrate (54, 10) from the last and the first washing step. The gases leaving the washing steps are heat exchanged (25, 36, 47) against fresh water, which is then used as the diluting and washing liquid in the last step, the gases (11) from the first step however being heat exchanged against cooking liquor (8) for the digestion process. The condensates (13, 27) obtained from the heat exchange of the gases in each step are combined with the diluting liquid to the following step except for the steps in which fresh water is used as the diluting liquid. The resulting uncondensable gas fractions after the heat exchange are combined (59) and are finally heat exchanged once more (60) against incoming fresh water (57). The pulp (6) obtained from the digestion process is also (7) heat exchanged against the cooking liquor (8) which is led to the digestion process.

50. 发明公开

EP0011622A1 METHOD RELATING TO DISCONTINUOUS TREATMENT OF FIBRE MATERIAL. 失效
标题翻译：方法纤维材料间断处理。
公开(公告)号：EP0011622A1
公开(公告)日：1980-06-11
申请号：EP79900247
申请日：1979-09-25
申请人： GLOEERSEN STIG , RONNHOLM ARVI
发明人： GLOERSEN STIG
IPC分类号： D21C7/08 , D21C11/06 , D21C11/10
CPC分类号： D21C11/06 , D21C7/08
摘要： Methode de traitement discontinu d'un materiau fibreux selon laquelle le materiau, apres un premier traitement (10, 12), est transfere pour subir un traitement ulterieur (26, 32). Une partie substantielle du liquide constituant le materiau est separee apres la premiere phase de traitement au cours d'une ou de plusieurs phases intermediaires precedant le traitement ulterieur et transportee dans un accumulateur de pression (20) d'ou l'on recupere l'energie calorifique contenue dans le constituant liquide qui est ulterieurement soumis a un traitement continu.

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