公开(公告)号：US09574303B2

公开(公告)日：2017-02-21

申请号：US15165332

申请日：2016-05-26

申请人： Veolia Water Technologies, Inc.

发明人： Michael S. Begley ,  Thomas Anthony Pecoraro

IPC分类号： B01D9/00 ,  D21C11/14 ,  D21C11/00 ,  C01D7/24 ,  C01D5/16

CPC分类号： D21C11/14 ,  C01D5/16 ,  C01D7/24 ,  D21C11/0085 ,  D21C11/063 ,  D21C11/066 ,  D21C11/12 ,  Y02P40/44

摘要： A method of recovering wood pulping chemicals from black liquor produced in a wood pulping process where the process entails burning the black liquor in a recovery boiler to form ash containing high levels of carbonate as well as sodium, potassium and chloride. The ash is dissolved to form a dissolved ash solution that is directed to a first stage crystallization unit that concentrates the dissolved ash solution and which results in the precipitation of sodium sulfate and sodium carbonate. Thereafter the concentrated dissolved ash solution is directed to a second stage crystallization unit which adiabatically cools the concentrated dissolved ash solution to form a glaserite slurry and a purge stream that is rich in chloride. In order to reduce the tendency of sodium carbonate and burkeite to crystallize in the second stage crystallization unit and to encourage pure glaserite to crystalize in the crystallizer, the method entails mixing a sulfate source, such as sodium sulfate or sulfuric acid, to the concentrated dissolved ash solution upstream of the crystallizer.

摘要翻译： 在木材制浆过程中产生的黑液中回收木材制浆化学品的方法，其中该方法需要在回收锅炉中燃烧黑液以形成含有高含量的碳酸盐以及钠，钾和氯化物的灰分。 灰分被溶解以形成溶解的灰分溶液，其被引导到浓缩溶解的灰分溶液并导致硫酸钠和碳酸钠沉淀的第一阶段结晶单元。 此后，将浓缩的溶解灰分溶液引导至第二阶段结晶单元，该第二阶段结晶单元绝热地冷却浓缩的溶解灰分溶液以形成富含氯化物的闪锌矿浆料和吹扫流。 为了降低第二阶段结晶单元中碳酸钠和膨润土结晶的倾向，并促使纯硅酸盐在结晶器中结晶，该方法需要将硫酸盐源如硫酸钠或硫酸与浓缩的溶解物 结晶器上游的灰分溶液。

公开(公告)号：US08721837B2

公开(公告)日：2014-05-13

申请号：US13709140

申请日：2012-12-10

申请人： Veolia Water Solutions & Technologies North America, Inc.

发明人： Michael S. Begley ,  Jean-Claude Gallot

IPC分类号： D21C11/06 ,  D21C11/12

CPC分类号： D21C11/066 ,  D21C11/00 ,  D21C11/0042 ,  D21C11/063 ,  D21C11/10 ,  D21C11/106 ,  D21C11/12 ,  D21C11/122 ,  Y02P40/44

摘要： In a digester, wood chips and white liquor are combined and cooked under pressure to pulp the wood. This produces black liquor which is concentrated and burned in a recovery boiler. The recovery boiler produces ash that contains sodium, sulphur, potassium and chloride. The ash is dissolved and subjected to a process that recovers sodium sulfate and burkeite. The concentration of potassium and chloride is reduced, in part at least, by subjecting the ash to adiabatic cooling in a crystallizer which produces glaserite and a purge stream rich in chloride. By leaching the glaserite, sodium sulfate is removed from the glaserite, leaving potassium sulfate. The recovered sodium sulfate and burkeite can be recycled and used as pulping chemicals. The removed potassium and chloride can be further treated or appropriately discarded.

摘要翻译： 在蒸煮器中，将木屑和白液混合并在压力下煮熟以制浆。 这产生浓缩并在回收锅炉中燃烧的黑液。 回收锅炉产生含有钠，硫，钾和氯化物的灰分。 灰分溶解并进行回收硫酸钠和烧碱的工艺。 钾和氯化物的浓度至少部分地通过使灰分在产生闪锌矿的结晶器中进行绝热冷却和富含氯化物的吹扫流来减少。 通过浸出硅酸盐，将硫酸钠从闪锌矿中除去，留下硫酸钾。 回收的硫酸钠和烧碱可以再循环并用作制浆化学品。 去除的氯化钾和氯化物可以进一步处理或适当地丢弃。

公开(公告)号：US5746886A

公开(公告)日：1998-05-05

申请号：US491893

申请日：1995-07-14

申请人： .ANG.ke Backlund ,  Lars Stigsson

发明人： .ANG.ke Backlund ,  Lars Stigsson

IPC分类号： D21C11/04 ,  D21C11/06 ,  D21C11/12

CPC分类号： D21C11/125 ,  D21C11/04 ,  D21C11/063 ,  Y02P70/24

摘要： The present invention relates to a method for producing pulp cooked under alkaline conditions, in which method cellulose-containing material is brought into contact, in a digester, with an alkaline cooking liquor containing dissolved potassium and sodium compounds, with used spent cooking liquor being separated off from the cellulose-containing material and withdrawn for the recovery of energy and chemicals, wherein: a) The molar ratio, calculated as K/K+Na, between potassium and sodium in a withdrawn spent cooking liquor exceeds 0.25. b) The withdrawn spent cooking liquor is concentrated with respect to its content of solid material and is subjected to partial oxidation in a reactor, resulting in the formation of a, combustible gas which is withdrawn from the reactor. c) oxygen-containing gas is supplied to the reactor in order to support the partial oxidation. d) The operating temperature in the reactor is adjusted to between 400.degree.-1200.degree. C. e) The combustible gas, which is obtained in association with the partial oxidation and which contains entrained solid and/or liquid alkali metal compounds, is separated from the major part of its content of alkali and used for the production of useful energy. f) The alkali metal compounds which have been separated off from the process gas are dissolved in liquid, which liquid is used either wholly or in part for preparing cooking liquor.

摘要翻译： PCT No.PCT / SE94 / 00028 Sec。 371 1995年7月14日第 102（e）日期1995年7月14日PCT 1994年1月18日PCT PCT。 出版物WO94 / 17240 日期：1994年8月4日本发明涉及一种在碱性条件下煮熟的纸浆的方法，其中使用含有溶解的钾和钠化合物的碱性蒸煮液在消化器中使含纤维素材料接触，使用 废弃的蒸煮液从含纤维素的材料中分离出并取出以回收能量和化学品，其中：a）在抽出的废蒸煮液中钾和钠之间的K / K + Na计算的摩尔比超过0.25 。 b）将抽出的废弃蒸煮液相对于其固体物质的含量浓缩，并在反应器中进行部分氧化，从而形成从反应器中排出的可燃气体。 c）向反应器供应含氧气体以支持部分氧化。 d）将反应器中的操作温度调节至400-1200℃。e）与部分氧化相关并含有夹带的固体和/或液体碱金属化合物获得的可燃气体与 其主要部分含量为碱，用于生产有用能源。 f）从工艺气体中分离的碱金属化合物溶解在液体中，该液体全部或部分用于制备蒸煮液。

公开(公告)号：US3256059A

公开(公告)日：1966-06-14

申请号：US27805263

申请日：1963-05-06

申请人： SONOCO PRODUCTS CO

发明人： BIGGS JR WILLIAM A

IPC分类号： D21C11/06

CPC分类号： D21C11/063 ,  Y10S423/03

公开(公告)号：US3169512A

公开(公告)日：1965-02-16

申请号：US24806162

申请日：1962-12-28

申请人： COMBUSTION ENG

发明人： HOCHMUTH FRANK W

IPC分类号： D21C11/06

CPC分类号： D21C11/063

公开(公告)号：US2716589A

公开(公告)日：1955-08-30

申请号：US22199351

申请日：1951-04-20

申请人： KAISER ALUMINIUM CHEM CORP

发明人： BYRNS ALVA C

IPC分类号： D21C11/06

CPC分类号： D21C11/063

公开(公告)号：US20140027076A1

公开(公告)日：2014-01-30

申请号：US13709140

申请日：2012-12-10

申请人： Veolia Water Solutions & Technologies North America, Inc.

发明人： Michael S. Begley ,  Jean-Claude Gallot

IPC分类号： D21C11/00

CPC分类号： D21C11/066 ,  D21C11/00 ,  D21C11/0042 ,  D21C11/063 ,  D21C11/10 ,  D21C11/106 ,  D21C11/12 ,  D21C11/122 ,  Y02P40/44

摘要： In a digester, wood chips and white liquor are combined and cooked under pressure to pulp the wood. This produces black liquor which is concentrated and burned in a recovery boiler. The recovery boiler produces ash that contains sodium, sulphur, potassium and chloride. The ash is dissolved and subjected to a process that recovers sodium sulfate and burkeite. The concentration of potassium and chloride is reduced, in part at least, by subjecting the ash to adiabatic cooling in a crystallizer which produces glaserite and a purge stream rich in chloride. By leaching the glaserite, sodium sulfate is removed from the glaserite, leaving potassium sulfate. The recovered sodium sulfate and burkeite can be recycled and used as pulping chemicals. The removed potassium and chloride can be further treated or appropriately discarded.

摘要翻译： 在蒸煮器中，将木屑和白液混合并在压力下煮熟以制浆。 这产生浓缩并在回收锅炉中燃烧的黑液。 回收锅炉产生含有钠，硫，钾和氯化物的灰分。 灰分溶解并进行回收硫酸钠和烧碱的工艺。 钾和氯化物的浓度至少部分地通过使灰分在产生闪锌矿的结晶器中进行绝热冷却和富含氯化物的吹扫流来减少。 通过浸出硅酸盐，将硫酸钠从闪锌矿中除去，留下硫酸钾。 回收的硫酸钠和烧碱可以再循环并用作制浆化学品。 去除的氯化钾和氯化物可以进一步处理或适当地丢弃。

公开(公告)号：US20070199670A1

公开(公告)日：2007-08-30

申请号：US11601989

申请日：2006-11-20

申请人： Takeharu Mukai ,  Yoshinori Shimizu ,  Shinya Sano ,  Naomi Inaba

发明人： Takeharu Mukai ,  Yoshinori Shimizu ,  Shinya Sano ,  Naomi Inaba

IPC分类号： B31F1/12

CPC分类号： B65H39/16 ,  A47K10/16 ,  B65B25/145 ,  B65B61/28 ,  B65D83/0805 ,  B65D83/0894 ,  B65G47/252 ,  B65G2201/025 ,  B65H45/24 ,  B65H2301/5126 ,  D21C11/063 ,  D21H21/18

摘要： The present invention aims at preventing sanitary tissue paper from being torn when it is removed. The purpose is accomplished by sanitary tissue paper of single-ply or double-plies, characterized in that said paper has a lateral tensile strength on a dry condition of 32 N/m or more, a longitudinal tensile strength on a wet condition 32 N/m or more, and a longitudinal tensile strength on a dry condition which is 2.5 to 3.5 times higher than the lateral tensile strength on a dry condition.

摘要翻译： 本发明旨在防止卫生棉纸在被去除时被撕裂。 目的是通过单层或双层的卫生棉纸来实现，其特征在于所述纸在干燥条件下具有32N / m以上的横向拉伸强度，湿条件下的纵向拉伸强度32N / m以上，干燥条件下的纵向拉伸强度比干燥条件下的横向拉伸强度高2.5〜3.5倍。

公开(公告)号：US4808264A

公开(公告)日：1989-02-28

申请号：US15137

申请日：1987-01-28

申请人： Jean-Erik Kignell

发明人： Jean-Erik Kignell

IPC分类号： B01D53/52 ,  B01D53/77 ,  C10J3/46 ,  D21C11/04 ,  D21C11/06 ,  D21C11/12 ,  D21C11/14

CPC分类号： D21C11/063 ,  C10J3/485 ,  C10J3/84 ,  C10K1/004 ,  C10K1/02 ,  C10K1/04 ,  C10K1/101 ,  C10K1/103 ,  C10K1/122 ,  D21C11/127 ,  C10J2300/0959 ,  C10J2300/1223 ,  C10J2300/1606 ,  C10J2300/1675 ,  C10J2300/1687 ,  Y02P20/129 ,  Y02P70/24 ,  Y10S423/03

摘要： Process for recovering chemicals and energy from cellulose waste liquors preferably black kraft liquor obtained in a paper pulp sulphate process, comprising the following, three distinct and separate steps: In the first step the concentrated black liquor is gasified in a pressurized gasification reactor by so called flash-pyrolysis at 700.degree. to 1300.degree. C., normally 800.degree.-900.degree. C., whereby an energy rich gas is produced, and in which the inorganic chemicals of the black liquor are contained in the form of molten suspended droplets, mainly comprising sodium carbonate and sodium sulphide. In the second step the gas from the gasification reactor is rapidly cooled through direct contact with water, and with green liquor, which is formed when the molten droplets and the hydrogen sulphide are dissolved in the quench liquid. The cooled gas subsequently passes through a scrubber. In the lower section of the scrubber the gas is washed with circulating green liquor, and in the upper section of the scrubber the gas is washed with sodium hydroxide (or carbonate) solution and water for complete removal of any remaining sulfur bearing components in the gas. In the third step the now sulfur and particulate-free gas is used as a fuel for generating steam and, if it should be economically justified, also for production of electric power.

摘要翻译： PCT No.PCT / SE86 / 00249 Sec。 371日期1987年1月28日 102（e）日期1987年1月28日PCT申请日1986年5月30日PCT出版物 公开号WO86 / 07396 日期：1986年12月18日。从纤维素废液中回收化学品和能量的方法，优选在纸浆硫酸盐方法中获得的黑色硫酸盐液，包括以下三个不同和分离的步骤：在第一步中，将浓缩的黑液气化 通过所谓的快速热解在700〜1300℃（通常为800-900℃）的加压气化反应器，由此产生富能气体，其中黑液的无机化学物质包含在 形式的熔融悬浮液滴，主要包括碳酸钠和硫化钠。 在第二步骤中，来自气化反应器的气体通过与水直接接触而迅速冷却，并且当熔融液滴和硫化氢溶解在骤冷液体中时形成绿色液体。 随后冷却的气体通过洗涤器。 在洗涤器的下部，气体用循环绿液洗涤，在洗涤器的上部，气体用氢氧化钠（或碳酸盐）溶液和水洗涤，以完全除去气体中剩余的含硫成分 。 在第三步中，现在使用无硫和无颗粒气体作为产生蒸汽的燃料，如果经济上合理，也用于生产电力。

公开(公告)号：US3574556A

公开(公告)日：1971-04-13

申请号：US3574556D

申请日：1968-05-15

申请人： WESTERN KRAFT CORP

发明人： BUXTON WINSLOW H JR

IPC分类号： D21C11/06 ,  C10B

CPC分类号： D21C11/063 ,  Y02P40/44

摘要： APPARATUS IS INCORPORATED IN A KRAFT PULP MILL FOR DIVERTING THE GASES FROM THE DISCHARGE STACK OF THE RECOVERY FURNACE TO AN AFTERSCRUBBER IN WHICH THE GASES ARE SPRAYED WITH THE ALKALINE WEAK WASH LIQUOR RESULTING FROM THE WASHING OF CALCIUM CARBONATE MUD AND SOLID

DREGS PROVIDED BY CAUSTICIZING THE GREEN LIQUOR, TO REMOVE THE MALODOROUS CONSTITUENTS AND RECOVER SOLID CHEMICAL VALUES BEFORE VENTING THE GASES TO THE ATMOSPHERE.