公开(公告)号：WO2022235212A1

公开(公告)日：2022-11-10

申请号：PCT/SG2022/050268

申请日：2022-05-03

Applicant: ASIA PACIFIC RESOURCES INTERNATIONAL HOLDINGS LTD. ,  PRAVEEN SINGHAVI

Inventor： GINTING, Eduward ,  ANTES, Rudine ,  H'NG, Yin Ying ,  PANDITA, Surya Darma

IPC: D21C1/02 ,  D21C1/04 ,  D21C3/02 ,  D21C3/04 ,  D21C5/00 ,  D21H11/12

Abstract: Methods for pre-treating non-wood feedstock, in particular, empty fruit bunch (EFB) 5 feedstock and pulps obtained using these methods are described.

公开(公告)号：WO2022171905A1

公开(公告)日：2022-08-18

申请号：PCT/EP2022/053716

申请日：2022-02-15

Applicant: SIEMPELKAMP MASCHINEN- UND ANLAGENBAU GMBH

Inventor： NEUMÜLLER, Achim ,  ROLL, Helmut ,  KÖFFERS, Fabian ,  SCHÖLER, Michael ,  ZIMMER, Sven

IPC: D21B1/12 ,  D21D1/30 ,  D21C1/02 ,  D21B1/22

Abstract: Die Erfindung betrifft eine Anlage und ein Verfahren zur Gewinnung von Fasern (40) aus lignozellulosehaltigem Aufgabegut (20), insbesondere aus Stroh, mit einem Kocher (5) zur Vorbehandlung des Aufgabeguts (20) unter Einwirkung von Wärme, Druck und Feuchte, mit einem Refiner (7) zur Zerfaserung des vorbehandelten Aufgabeguts (20) mittels zweier koaxial im Refinergehäuse relativ zueinander rotierender, einen Mahlsspalt (11) bildender Refinerwerkzeuge (9, 10), und mit einer Fördereinrichtung (6) zum Fördern des vorbehandelten Aufgabeguts (20) vom Kocher (5) zum Refiner (7). Die Fördereinrichtung (6) umfasst einen Schneckenförderer (14) mit Schneckentrog (23) und darin umlaufender Förderschnecke (48) mit mindestens einer Schneckenwendel (29), die über eine Eintragsöffnung (26) im Refinergehäuse axial in den Refiner (7) mündet. Um einem Lösen von Gutpartikeln aus dem übrigen Aufgabegut entgegenzuwirken, wird erfindungsgemäß vorgeschlagen, dass die Förderschnecke (48) des Schneckenförderers (14) mit einer Drehzahl von mindestens 400 U/min, vorzugsweise von 500 U/min oder mehr angetrieben ist. Auf diese Weise kann das Aufgabegut (29) als gleichmäßiger Gutstrom dem Refiner zugeführt werden.

公开(公告)号：WO2022008790A1

公开(公告)日：2022-01-13

申请号：PCT/FI2021/050480

申请日：2021-06-23

Applicant: AMPPC FINLAND OY

Inventor： KURKI, Matti

IPC: D21C1/02 ,  D21C3/02 ,  D21C3/04 ,  D21C3/06 ,  D21C9/00 ,  D21C11/00

Abstract: The present invention discloses a cooking method wherein partly digested wood based cellulosic raw materal is compressed during cooking to provide high molecular weightxylan, lignin and pulp.

公开(公告)号：WO2021214387A1

公开(公告)日：2021-10-28

申请号：PCT/FI2021/050294

申请日：2021-04-20

Applicant: SCITECH-SERVICE OY

Inventor： TIKKA, Panu ,  TARVO, Ville

IPC: D21C1/02 ,  D21C3/02

Abstract: According to an example aspect of the present invention, there is provided a method for prehydrolysing lignocellulosic chip material in a reaction vessel by a prehydrolysis reaction carried out in the presence of steam at a reaction temperature. The method comprises the steps of heating the contact surfaces of the reaction vessel above the boiling point of water by feeding steam flow into the reaction vessel, introducing during a preselected period of time a liquid SO2 flow into steam flow and vaporizing the liquid SO2 flow to form gaseous SO2 in the steam flow, continuing the feed of the medium pressure flow into the reaction vessel after said preselected period of time, and maintaining the reaction temperature for hydrolysing the lignocellulosic material.

公开(公告)号：WO2021118425A1

公开(公告)日：2021-06-17

申请号：PCT/SE2020/050924

申请日：2020-10-01

Applicant: VALMET AB

Inventor： LAMBERT, Francois ,  BOMAN, Rolf

IPC: D21C1/04 ,  D21C1/02 ,  D21C1/10 ,  D21C9/18 ,  C12P7/10

Abstract: Method for treating biomass, comprising compressing and dewatering (62) the biomass to a dry solid content of DS1 % by weight; feeding (63) compressed biomass to a treatment vessel; adding (64) a treatment liquid to said treatment vessel; discharging (65) treated biomass; compressing and dewatering (66) discharged biomass to a dry solid content of DS2 % by weight, and treating (68) the compressed and dewatered biomass in a hydrolysis reactor, wherein 1 %

公开(公告)号：WO2020263153A1

公开(公告)日：2020-12-30

申请号：PCT/SE2020/050557

申请日：2020-06-03

Applicant: VALMET AB

Inventor： LAMMI, Lari ,  KARVONEN, Jouni ,  MINNAAR, Susanna ,  LANDMAN, Hunphrey ,  COETZEE, Berdine ,  WAUTS, Johann

IPC: D21C11/00 ,  D21C1/02 ,  D21C1/04 ,  C08B1/00 ,  C08B16/00

Abstract: The present invention relates to a method for extracting hemicellulose from lignocellulosic material, the method comprising: a) providing (11) lignocellulosic material in a digester, b) supplying (12) steam to the digester, c) performing (13) hydrolysis of the lignocellulosic material in the digester until a first P-factor is reached, d) supplying (14) a first liquid to the digester for mixing with the lignocellulosic material, wherein a total volume of the first liquid is at least equal to a volume required to cover the lignocellulosic material in the digester after the hydrolysis of step c), wherein the first liquid is water or condensate, and e) draining (15) the first liquid from the digester for extracting hemicellulose from the lignocellulosic material, wherein the supplying of liquid in step d) takes less than 15 minutes, preferably less than 10 minutes, and wherein the draining of the first liquid during step e) is performed in less than 15 minutes, preferably less than 10 minutes.

公开(公告)号：WO2019226087A1

公开(公告)日：2019-11-28

申请号：PCT/SE2019/050328

申请日：2019-04-09

Applicant: VALMET AB

Inventor： PETTERSSON, Patrik ,  CARLSSON, Johan ,  EDLUND, Peter

IPC: D21B1/36 ,  C08B1/00 ,  D21C1/02 ,  C12P7/10 ,  C12P19/02 ,  C13K1/02 ,  D21C3/22 ,  D21C3/26 ,  F15D1/08 ,  F16L57/06

Abstract: A system for treatment of a biomass material, said system comprising:a first vessel (3) in which said biomass material is treated under a first pressure; a second vessel (5) in which said biomass material is received and held at a second pressure which is lower than the first pressure; a transporting pipe (7) connecting an outlet (9) of the first vessel (3) with an inlet (11) of the second vessel (5) for transporting the biomass material from the first vessel to the second vessel; and a valve (15; 15'; 15) arranged in said transporting pipe (7), said valve being configured for controlling the flow of biomass material and fluid in the transporting pipe (7), wherein said transporting pipe (7) is asymmetrically connected to an outlet (33'; 33) of said valve (15; 15'; 15) such that a generated jet stream of biomass material delivered out from the outlet (33'; 33) of the valve (15; 15'; 15) is received closer to a transporting pipe longitudinal central axis (A1) than if the outlet (33'; 33) of the valve (15; 15'; 15) and the transporting pipe (7) would have been connected symmetrically.

公开(公告)号：WO2017166860A1

公开(公告)日：2017-10-05

申请号：PCT/CN2016/108936

申请日：2016-12-07

Applicant: 新疆国力源投资有限公司

Inventor： 滕铁生 ,  张跃平

IPC: D21C1/02 ,  D21C3/02

CPC classification number: D21C1/02 ,  D21C3/02

Abstract: 一种稻秆制本色浆的方法，该方法包括如下步骤：(1)将稻秆切成料段；(2)料段先送汽蒸仓预蒸，再送入连蒸器进行蒸煮，蒸煮时按料段重量计加入1.5～2％的氢氧化钾，1.2～1.5％的亚硫酸铵，1.2～1.5％的三聚磷酸钠；(3)蒸煮后的物料送双螺杆磨浆机进行搓摩分丝，得到本色浆。采用本方法，成浆效率高，浆得率可达到75～80％，2、纤维质量好，系统产生的废水b/c比值高，极易生化，可采用生物处理的办法，同传统化学制浆相比可节省成本1/3左右。

公开(公告)号：WO2017166854A1

公开(公告)日：2017-10-05

申请号：PCT/CN2016/108924

申请日：2016-12-07

Applicant: 新疆国力源投资有限公司

Inventor： 滕铁生 ,  张跃平

IPC: D21C3/02 ,  D21C1/02 ,  D21C11/12 ,  D21D1/02

CPC classification number: D21C1/02 ,  D21C3/02 ,  D21C11/12 ,  D21D1/02

Abstract: 一种稻秆本色浆抄造瓦楞原纸的方法，包括：(I)对稻秆本色浆进行打浆，打浆度控制在28-32°SR，湿重3.2-3.8g；(II)对废纸浆进行打浆，打浆度控制在28-30°SR，湿重2.5-2.8g；(III)按重量比为7:3将稻秆本色浆和废纸浆混合，上抄纸机，抄造成瓦楞原纸。该方法实现了稻秆资源的有效利用。

公开(公告)号：WO2016145531A1

公开(公告)日：2016-09-22

申请号：PCT/CA2016/050292

申请日：2016-03-16

Applicant: IOGEN CORPORATION

Inventor： FOODY, Brian ,  MACDONALD, Daniel G. ,  MARTENS, Kristin ,  LEDUC, Natacha ,  DECHMAN, John ,  GRIFFIN, Robert

IPC: C12P7/10 ,  B01D53/50 ,  C01B17/56 ,  C12P19/02 ,  C12P19/14 ,  D21C1/02 ,  D21C1/04

CPC classification number: C12M45/03 ,  B01D53/002 ,  B01D2257/302 ,  C12M45/09 ,  C12M45/20 ,  C12P7/10 ,  C12P7/14 ,  C12P19/02 ,  C12P19/14 ,  C12P2201/00 ,  C12Y302/01004 ,  D21C1/02 ,  D21C1/04 ,  D21C3/06 ,  Y02E50/16

Abstract: A process for producing ethanol from lignocellulosic biomass includes adding at least one of sulfur dioxide and sulfurous acid to the lignocellulosic biomass to provide an equivalent sulfur dioxide loading of at least 10 wt% sulfur dioxide to dry lignocellulosic biomass. The acidified lignocellulosic biomass is pretreated at a temperature above about 185°C and for a pretreatment time less than about 10 minutes, to provide a pretreated biomass composition wherein the biomass is readily hydrolyzed by enzymes. Advantageously, sulfur dioxide from at least one of the flash stream and a stream derived from the flash is recovered and recycled back into the process.

Abstract translation: 从木质纤维素生物质生产乙醇的方法包括向木质纤维素生物质中加入至少一种二氧化硫和亚硫酸，以提供至少10重量％二氧化硫的等效二氧化硫负载以干燥木质纤维素生物质。 酸化的木质纤维素生物质在高于约185℃的温度下预处理并且预处理时间小于约10分钟，以提供预处理的生物质组合物，其中生物质容易被酶水解。 有利地，来自闪蒸流中的至少一种的二氧化硫和来自闪蒸的料流被回收并循环回到该方法中。