公开(公告)号：WO2018226147A1

公开(公告)日：2018-12-13

申请号：PCT/SE2018/050584

申请日：2018-06-05

Applicant: SUNCARBON AB

Inventor： HULTEBERG, Christian ,  STIGSSON, Lars

IPC: C10G3/00 ,  C10G1/06 ,  D21C11/04 ,  D21C11/06 ,  B01J23/00 ,  C07G1/00 ,  C10G45/04 ,  C10G45/06 ,  C10G45/08 ,  C10G45/10

Abstract: The present invention describes a process for depolymerisation of lignin, said process comprising using at least one catalyst internal to a pulp mill for performing catalytic treatment and separation of biomass components into cellulose and lignin rich material.

公开(公告)号：WO2013066225A1

公开(公告)日：2013-05-10

申请号：PCT/SE2011/051317

申请日：2011-11-04

Applicant: METSO PAPER SWEDEN AB ,  HOGEBRANDT, Eva ,  LABIGALINI BARANOVSKY, Alessandra

Inventor： HOGEBRANDT, Eva ,  LABIGALINI BARANOVSKY, Alessandra

IPC: D21C11/04 ,  D21C11/00

CPC classification number: D21C11/0078 ,  D21C3/02 ,  D21C11/0007 ,  D21C11/0064 ,  D21C11/04

Abstract: The invention relates to a method for preparation of white liquor in a chemical recovery process of the kraft process. According to the invention, the green liquor separation process and the white liquor separation process taking are place in the same common filter apparatus with no dedicated green liquor separation apparatus nor any dedicated white liquor separation apparatus, and where the white liquor separation process and the green liquor separation process are conducted in sequence in the same filter apparatus and where the white liquor separation process has a part of the cycle time in the range 20-50% of the total cycle time in the same filter apparatus.

Abstract translation: 本发明涉及一种在硫酸盐法处理化学回收过程中制备白液的方法。 根据本发明，将绿液分离过程和白液分离过程置于相同的普通过滤装置中，没有专用的绿液分离装置，也没有专用的白液分离装置，而白液分离过程和绿色 液分离过程在相同的过滤装置中依次进行，并且白液分离过程在同一过滤装置中的一部分循环时间在总循环时间的20-50％的范围内。

公开(公告)号：WO2012049375A1

公开(公告)日：2012-04-19

申请号：PCT/FI2011/050896

申请日：2011-10-14

Applicant: UPM-KYMMENE CORPORATION ,  MIETTINEN, Mauno

Inventor： MIETTINEN, Mauno

IPC: C07G1/00 ,  D21C11/00 ,  D21C11/04

CPC classification number: D21C11/10 ,  B01J3/00 ,  B01J3/02 ,  B01J3/042 ,  C07G1/00 ,  D21C11/0007 ,  D21C11/04

Abstract: In a method for the continuous precipitation of lignin from black liquor black liquor is provided so as to flow as a pressurized flow in a reactor (2) with a dwell time of less than 300s, - an acidifying agent selected from the group of carbon dioxide, acid and their combinations is led to the flow at one or more feeding sites (2a) to lower the pH of black liquor, - the pH is allowed to decrease by the effect of the acidifying agent in the pressurized flow to the precipitation point of lignin, the pressure of the pressurized flow is abruptly released, and lignin particles are separated from black liquor.

Abstract translation: 在从黑液中连续沉淀木质素的方法中，提供黑液作为加压流在停留时间小于300s的反应器（2）中流动， - 选自二氧化碳 ，酸和它们的组合被导致在一个或多个进料位置（2a）处的流动，以降低黑液的pH， - 通过加压流中的酸化剂的作用使pH降低到沉淀点 木质素，加压流的压力突然释放，木质素颗粒与黑液分离。

公开(公告)号：WO2011162420A1

公开(公告)日：2011-12-29

申请号：PCT/JP2011/065237

申请日：2011-06-27

Applicant: ロペスアンドエヌティ有限会社 ,  小池一正 ,  齋藤秀之

Inventor： 小池一正 ,  齋藤秀之

IPC: C02F1/56 ,  C02F1/52 ,  C02F11/00 ,  C02F11/12 ,  C08H6/00 ,  D21C11/04

CPC classification number: C02F1/66 ,  C02F1/5245 ,  C02F2103/28 ,  C08H6/00 ,  D21C11/0007 ,  D21C11/0085 ,  D21C11/04

Abstract: 　クラフトパルプ製造工程から発生する強アルカリ性のパルプ蒸解廃液（すなわち、黒液）からｐＨがほぼ中性領域において高効率でリグニンを回収する。　強アルカリ性のパルプ蒸解廃液に塩酸等の無機酸と塩化カルシウム等のカルシウム塩又はマグネシウム塩を添加、撹拌し、パルプ廃液のｐＨを５以下、好ましくは３～４に調整して、リグニンの微細な沈殿物を生成させる第１工程と、第１工程により得られたリグニンの微細な沈殿物により懸濁したパルプ蒸解廃液に、水酸化ナトリウムを添加、撹拌しｐＨをほぼ中性領域に調整する第２工程と、第２工程で得られたｐＨがほぼ中性の状態のリグニンの微細な沈殿物が混有している懸濁液に高分子凝集剤又は無機凝集剤を加え、リグニンのフロックを作り、濾別して、リグニンを回収する第３工程、とからなる。

Abstract translation: 木质素在从牛皮纸浆生产过程产生的强碱性废纸浆蒸煮液（即黑液）的基本中性pH范围内以高效率回收。 所公开的方法包括将无机酸如盐酸和钙盐或镁盐如氯化钙加入到强碱性废纸浆蒸煮液中并搅拌以将纸浆废液的pH调节至5以下的第一方法 ，优选3-4，并形成细木质素沉淀物; 向悬浮细木质素沉淀物的第一种方法获得的废浆蒸煮液中加入氢氧化钠并搅拌以将pH调节至基本上中性的范围的第二种方法; 以及将第二种方法获得的悬浮液中加入聚合物絮凝剂或无机絮凝剂的第三种方法，其中将基本上中性pH的细木质素沉淀物混合，形成木质素絮凝物并通过过滤回收木质素。

公开(公告)号：WO2009104995A1

公开(公告)日：2009-08-27

申请号：PCT/SE2008/000142

申请日：2008-02-21

Applicant: LIGNOBOOST AB ,  ÖHMAN, Fredrik ,  THELIANDER, Hans ,  TOMANI, Per ,  AXEGARD, Peter

Inventor： ÖHMAN, Fredrik ,  THELIANDER, Hans ,  TOMANI, Per ,  AXEGARD, Peter

IPC: D21C11/00 ,  C08H5/02 ,  D21C11/04

CPC classification number: C08H8/00 ,  D21C11/0007

Abstract: The invention relates to a method for controlling the sodium and sulphur balance of a pulp mill while separating lignin from black liquor, and also a lignin product or an intermediate lignin product obtainable by said method. The invention also provides use of a lignin product or an intermediate liqnin product for the production of fuel (solid, gaseous or liquid) or materials. The method involves the steps: (1) precipitation of lignin using an acid followed by filtration, (2) re-suspension of the filter cake, (3) filtration forming a second cake, and (4) returning filtrate for washing and suspending in previous steps. In a preferred embodiment sodium sulphate-rich ESP (electrostatic precipitator) -dust produced in the recovery boiler is used in the washing of the precipitated lignin.

Abstract translation: 本发明涉及一种用于控制纸浆厂的钠和硫平衡的方法，同时将木质素与黑液分离，以及可通过所述方法获得的木质素产物或中间体木质素产物。 本发明还提供了用于生产燃料（固体，气体或液体）或材料的木质素产物或中间体液体产品的用途。 该方法包括以下步骤：（1）使用酸沉淀木质素，然后过滤，（2）滤饼再悬浮，（3）过滤形成第二个滤饼，（4）将滤液返回洗涤和悬浮 以前的步骤。 在一个优选的实施方案中，在回收锅炉中产生的富含硫酸钠的ESP（静电除尘器） - 水泥被用于洗涤沉淀的木质素。

公开(公告)号：WO2008156397A1

公开(公告)日：2008-12-24

申请号：PCT/SE2007/050443

申请日：2007-06-20

Applicant: METSO POWER AB ,  BERGSTRÖM, Ulf

Inventor： BERGSTRÖM, Ulf

IPC: D21C11/12 ,  D21C11/00 ,  D21C11/04

CPC classification number: D21C11/04 ,  D21C11/127

Abstract: The invention relates to improved steam generation in a chemical recovery process in a recovery boiler. The black liquor obtained from a kraft pulping process is subjected to a lignin separation process forming a lignin rich fraction and a lignin lean fraction. The lignin rich fraction is burnt in a parallel furnace having superheaters, while the lignin lean fraction is burnt in the ordinary recovery boiler. The resulting flue gases from the parallel furnace are merged with the flue gases in a later flue gas position in the recovery boiler, reducing the harsh chemical conditions in the recovery boiler. This results in more efficient steam generation and possibilities of generating more high pressure steam for production of electricity.

Abstract translation: 本发明涉及在回收锅炉中的化学回收过程中改进的蒸汽产生。 将从硫酸盐制浆法得到的黑液进行木质素分离，形成富含木质素馏分和木质素贫馏分。 富含木质素的级分在具有过热器的平行炉中燃烧，而木质素贫馏分在普通回收锅炉中燃烧。 来自平行炉的烟气产生的烟气与回收锅炉中烟道气中的烟气合并，减少了回收锅炉中的恶劣化学条件。 这导致更有效的蒸汽产生和产生更高压蒸汽用于生产电力的可能性。

公开(公告)号：WO2004048681A1

公开(公告)日：2004-06-10

申请号：PCT/SE2003/001806

申请日：2003-11-21

Applicant: KVAERNER PULPING AB ,  INGELMAN, Magnus ,  TJERNBERG, Jan ,  MARKUSSON, Anita

Inventor： INGELMAN, Magnus ,  TJERNBERG, Jan ,  MARKUSSON, Anita

IPC: D21C11/04

CPC classification number: D21C11/04 ,  D21C11/0064

Abstract: The present invention concerns a method for production of green liquor in association with a causticizing process during recovery of chemicals in manufacture of sulphate pulp comprising: a) a first step of a smelt (14) of chemicals principally consisting of Na2S and Na 2 CO 3 from a soda boiler (1), b) a second step of a weak liquor (15) that contains dissolved NaOH and CaO, and of c) a third step of a dissolving tank (2) in which the smelt (14) from the soda boiler (1) is dissolved in the weak liquor (15) in order to form a green liquor (16), whereby a solution of NaOH is added to the weak liquor (15) at a position before said weak liquor (15) is added to the dissolving tank, in order in this way to increase the concentration of NaOH in the weak liquor (15) such that a fraction of CaO that is present dissolved in the weak liquor (15) precipitates.

Abstract translation: 本发明涉及一种生产绿液的方法，该方法是在硫酸盐浆制造过程中回收化学品期间与苛化过程相结合的方法，该方法包括：a）主要由苏打碱的Na 2 S和Na 2 CO 3组成的化学气体（14）的第一步骤 锅炉（1），b）含有溶解的NaOH和CaO的弱液体（15）的第二步骤，以及c）第三步骤，其中来自苏打锅炉的熔融物（14） 1）溶解在弱液体（15）中以形成绿液（16），由此在将弱液体（15）添加到所述弱液体（15）之前的位置处将NaOH溶液加入到弱液体（15）中 溶解槽，以这种方式增加弱液（15）中NaOH的浓度，使得溶解在弱液体（15）中的CaO存在的一部分析出。

公开(公告)号：WO02036876A1

公开(公告)日：2002-05-10

申请号：PCT/FI2001/000927

申请日：2001-10-26

IPC: D21C3/02 ,  D21C11/00 ,  D21C11/04 ,  D21C3/22

CPC classification number: D21C3/02 ,  D21C11/0021 ,  D21C11/04

Abstract: This invention refers to a method for producing pulp in an alkaline digesting process comprising the following steps: charging lignocellulosic material to a digester system; pre-treating said lignocellulosic material with an impregnation liquor and subsequently with a hotter liquor containing black liquor, simultaneously displacing spent liquor; heating and cooking said lignocellulosic material to produce cooked lignocellulosic material and cooking liquor; displacing a portion of said cooking liquor at cooking temperature from said digester to a first section by supplying a washing liquid; further displacing a second portion of displaced liquor from said digester system to at least a second section by supplying further washing liquid until the temperature of said second portion of displaced liquor drops to a temperature of at least about the boiling point of said cooking liquor at atmospheric pressure, said second portion of displaced liquor having a dry solids content substantially lower than the initial dry solids content of the cooking liquor and substantially lower than that of said first portion of displaced liquor. The method is characterized in that substantial parts of said second portion of displaced liquor is heated by the heat of the first portion of displaced liquor, whereby said first portion having a high solids content is prevented from being reused in a digester and said heated second portion is further used as hot liquor in the pre-treatment and heating of said lignocellulosic material.

Abstract translation: 本发明涉及一种在碱性消化过程中生产纸浆的方法，包括以下步骤：将木质纤维素材料装入消化器系统; 用浸渍液预处理所述木质纤维素材料，随后用含有黑液的较热液体同时置换废液; 加热和烹饪所述木质纤维素材料以产生煮熟的木质纤维素材料和蒸煮液; 通过提供洗涤液将烹饪温度下的所述蒸煮液的一部分从所述蒸煮器移出到第一部分; 通过进一步提供洗涤液进一步将置换的液体的第二部分从所述蒸煮器系统移动到至少第二部分，直到所述第二部分置换的液体的温度在大气压下降至至少约沸点的温度 所述第二部分的置换液体的干固体含量基本上低于蒸煮液的初始干固体含量，并且基本上低于所述第一部分置换的液体。 该方法的特征在于，所述第二部分置换的液体的大部分被第一部分置换的液体的热量加热，由此所述具有高固体含量的第一部分被防止重新用于蒸煮器中，并且所述加热的第二部分 进一步用作所述木质纤维素材料的预处理和加热中的热液。

公开(公告)号：WO0065150A9

公开(公告)日：2002-04-18

申请号：PCT/US0010995

申请日：2000-04-21

Applicant: BABCOCK & WILCOX CO ,  MCDERMOTT ENGINEERS & CONSTRUC ,  MCDERMOTT TECHNOLOGY INC

Inventor： BLUE JERRY D ,  DOWNS WILLIAM ,  FULLER TIMOTHY A ,  VERRILL CHRISTOPHER L ,  WEITZEL PAUL S ,  CHAN PHUNG H M

IPC: D21C11/06 ,  D21C11/12 ,  F23J15/06 ,  D21C11/04 ,  B03C3/01 ,  B03C3/12 ,  B03C3/88 ,  F23B7/00 ,  F23C9/08

CPC classification number: D21C11/125 ,  D21C11/06 ,  F23G2209/101 ,  F23J15/06 ,  F23J2215/20 ,  F23J2219/30 ,  Y02E20/363 ,  Y02P40/44

Abstract: A method and apparatus for producing clean, sweet, fuel gas for use in a combustion process by processing a waste stream from digestion of lignocellulosic material partially oxidizes the waste stream to form hot gases and molten salts and cools the hot gases and molten salts using a quench liquor to form quenched gas (76) and carbonate liquor (30). Particles are removed from the quenched gas to form a raw fuel gas by subjecting the quenched gas to a multi-step fume reduction process (80) which includes heat extraction (91) from the quenched gas to reduce particulate load and water content of the quenched gas to form a low fume fuel gas. H2S is removed from the low fume fuel gas using an H2S removal process (105) which is more selective for H2S than it is for CO2, the removing step forming clean, sweet, fuel gas and acid gases.

Abstract translation: 用于生产用于燃烧过程中的清洁，甜味的燃料气体的方法和装置通过处理来自木质纤维素材料消化的废物流部分地氧化废物流以形成热气体和熔融盐，并使用 骤冷液形成骤冷气体（76）和碳酸液（30）。 通过对淬火气体进行多步骤烟气还原过程（80），从骤冷气体中取出颗粒，从而形成原燃料气体，该工艺包括从骤冷气体中提取（91）以减少淬火气体的颗粒负荷和含水量 气体形成低烟气燃料。 使用H2S去除工艺（105）从低烟气燃料气体中除去H2S，对H2S而言比H2更有选择性，除去步骤形成清洁，甜味，燃料气体和酸性气体。

公开(公告)号：WO00029666A1

公开(公告)日：2000-05-25

申请号：PCT/US1999/027028

申请日：1999-11-16

IPC: D21C11/00 ,  D21C11/06 ,  D21C11/12 ,  F23J3/02 ,  F23J7/00 ,  F23J15/00 ,  F23J15/02 ,  C10J3/00 ,  D21C11/04 ,  F23J1/02 ,  F23J3/06

CPC classification number: F23J7/00 ,  D21C11/0085 ,  D21C11/066 ,  D21C11/12 ,  F23J3/023 ,  F23J15/006 ,  F23J15/022

Abstract: An apparatus (12) for selecting substantially uniform sized salt-cake particles (56) from an inorganic salt recovery stream of a chemical recovery boiler (10) and injecting them into the flue gas stream (42) of the boiler. This acts to "seed" the sodium fume and the particulate matter that rises with the flue gas stream for creation of a larger, boiler fouling particle. This larger fouling particle bonds to boiler heat transfer surfaces (51, 116, 118) with a lesser degree of adhesion than its "unseeded" counterparts. The combination of the increased size and lower adhesion property allows for easier and quicker removal thus increasing boiler efficiency. Conventional soot blowing operations (50) are more able to remove the deposits on the boiler tubes, increasing run time and reducing the plug rate.

Abstract translation: 一种用于从化学回收锅炉（10）的无机盐回收流中选择基本上均匀的大小的盐饼颗粒（56）并将其注入到锅炉的烟道气流（42）中的装置（12）。 这样做会使钠烟和用烟气流升高的颗粒物“种子”，以产生更大的锅炉污垢颗粒。 这种较大的污垢颗粒与其“未密封的”对应物具有较小程度的粘附性结合到锅炉传热表面（51,116,118）。 增加尺寸和较低粘附性的组合允许更容易和更快的去除，从而提高锅炉效率。 传统的吹灰操作（50）更能够去除锅炉管上的沉积物，增加运行时间并降低插头速率。