公开(公告)号：WO2021237436A1

公开(公告)日：2021-12-02

申请号：PCT/CN2020/092236

申请日：2020-05-26

申请人： 海安县金鑫纸业有限公司

发明人： 于有勤

IPC分类号： D21C7/12 ,  D21C9/18 ,  D21B1/00

摘要： 一种维持定量、厚度和水份稳定的造纸控制系统，包括供料设置，选取造纸原料，并提供控制系统进行供料；称量设备，用于称量造纸所需的原料；压缩设备，用于对称量后的原料进行压缩整合；滚压脱水设备，用于对压缩后的物料进行脱水；成型设置，用于对脱水后的物料进行成型、压花包装。该系统能够制造出水份、厚度均较为适中的纸张，并使得纸张张力提高，耐磨且不易撕裂，纸张品质提升，并且该系统原料使用少，节能高效，原料浪费率低。

公开(公告)号：WO2010092429A1

公开(公告)日：2010-08-19

申请号：PCT/IB2009/007841

申请日：2009-12-22

申请人： ABB RESEARCH LTD ,  BHAT, Shrikant ,  BUDDHI SRINIVASA, Babji ,  PATHATH, Prasanna

发明人： BHAT, Shrikant ,  BUDDHI SRINIVASA, Babji ,  PATHATH, Prasanna

IPC分类号： G05B13/02 ,  G06F15/18 ,  G06F17/17 ,  D21C7/12 ,  D21H15/00

CPC分类号： D21C7/00 ,  D21C7/12 ,  G05B13/0265 ,  G05B13/042

摘要： A method for optimization of continuous digestion process is provided which aims to control the delignification process in a continuous pulp digester in an optimal way for different pulp grades taking care of the process disturbances and model uncertainties. This is achieved by customizing a generic mathematical model for continuous digestion process which runs through software application on a dedicated electronic means. The model is updated periodically based on online information and used with a plant optimization component involving multiobjective optimization to evaluate the optimal set points for the controllers.

摘要翻译： 提供了一种优化连续消解过程的方法，其目的是以不同纸浆等级的最佳方式控制连续纸浆蒸煮器中的脱木质过程，以处理工艺扰动和模型不确定性。 这通过定制用于连续消化过程的通用数学模型来实现，其通过专用电子装置上的软件应用运行。 该模型基于在线信息定期更新，并与涉及多目标优化的工厂优化组件一起使用，以评估控制器的最佳设定点。

公开(公告)号：WO2003100166A1

公开(公告)日：2003-12-04

申请号：PCT/US2003/016022

申请日：2003-05-20

申请人： THE RESEARCH FOUNDATION OF THE STATE UNIVERSITY OF NEW YORK ,  MAKKONEN, Hannu ,  CÖPUR, Yalcin ,  GRANZOW, Stephen

发明人： MAKKONEN, Hannu ,  CÖPUR, Yalcin ,  GRANZOW, Stephen

IPC分类号： D21C7/12

CPC分类号： D21C3/22 ,  D21C3/222 ,  D21C3/228 ,  D21C5/005

摘要： Methods are provided for determining the yield and/or hygroscopicity of a pulp from the dimensions of fibers obtained from a sample of the pulp. The yield and/or hygroscopicity of softwoods and hardwoods may be calculated using the methods of the present invention. The methods of the present invention are especially suited to on-line measurements obtained during the pulping process.

摘要翻译： 提供了从纸浆样品获得的纤维的尺寸确定纸浆的产率和/或吸湿性的方法。 可以使用本发明的方法计算软木和硬木的产量和/或吸湿性。 本发明的方法特别适用于在制浆过程中获得的在线测量。

公开(公告)号：WO0188257A8

公开(公告)日：2002-02-07

申请号：PCT/US0115528

申请日：2001-05-14

申请人： UNITED STATES BORAX INC

发明人： HSU WUHWA WESLEY

IPC分类号： D21C7/12 ,  G01N27/416 ,  G01N31/16 ,  G01N33/34 ,  G01N33/46

CPC分类号： G01N33/343 ,  D21C7/12 ,  G01N31/164

摘要： Chemical species, e.g. metaborate, carbonate, hydroxide and sulfide, in a boron-containing alkaline wood pulping liquor sample are determined quantitatively by (i) subjecting a first aliquot portion of the sample to a primary acid titration analysis to derive multiple equivalence points at different respective pH values; (ii) subjecting a second aliquot portion of the sample to an analysis to determine the quantitative presence of boron or sulfide ions therein; and then (iii) determining the quantitative presence in the sample of at least one of the chemical species. Wood pulping parameters may thus be determined on the basis of the quantitative presence of the chemical species to assist in process and/or quality of the wood pulping process.

摘要翻译： 化学物质，例如 通过（i）使样品的第一等分试样部分进行初级酸滴定分析以在不同的各自的pH值下导出多个等同点来定量测定含硼碱性木材制浆液样品中的偏硼酸盐，碳酸盐，氢氧化物和硫化物; （ii）使样品的第二等分试样部分进行分析以确定其中的硼或硫化物离子的定量存在; 然后（iii）确定样品中至少一种化学物质的定量存在。 因此可以基于化学物质的定量存在来确定木材制浆参数以帮助木材制浆过程的过程和/或质量。

公开(公告)号：WO9713916A3

公开(公告)日：1997-07-17

申请号：PCT/DE9601841

申请日：1996-09-26

申请人： SIEMENS AG ,  OBRADOVIC DRAGAN ,  FURUMOTO HERBERT ,  FISCHER KLAUS

发明人： OBRADOVIC DRAGAN ,  FURUMOTO HERBERT ,  FISCHER KLAUS

IPC分类号： D21C7/12 ,  G05B13/02 ,  D21C

CPC分类号： D21C7/12 ,  G05B13/027

摘要： The aim of the invention is to determine the point in time during pulp cooking at which the viscosity and/or kappa number of the pulp produced have predetermined values. Since these values can be determined only after the cooking process, appropriate models must be used. To that end, use is made of a neural network whose initial value is the desired viscosity and/or kappa number from which the requisite cooking time can be determined and whose initial values are measurement values of the cooking process. According to the invention, the neural network is adapted during the course of a continuous cooking reaction on the basis of a dynamic model of the changing measurement values. Suitable measurement values during pulp cooking are in particular the SO2 content of the cooking acid and the colour value and electrical conductivity or pH value. In the associated arrangement, the model (10) used is a combination of analytical models (101 to 103, 201 to 204) of the process variables with the neuronal network (100, 200).

公开(公告)号：WO2021232132A1

公开(公告)日：2021-11-25

申请号：PCT/BR2021/050221

申请日：2021-05-24

申请人： SUZANO S.A.

发明人： SANTOS, Carlos Verciano Costa ,  MOROMIZATO, Carlos Alberto ,  DE MOURA, Gláucio Francisco ,  DA SILVA, Jeferson Borges ,  DE ARAÚJO, Jonatas Carlos Pereira ,  LIMA, Lucas Ramos ,  BLONSKI, Maria Emília Drummond ,  DE CASTRO, Paulo Jose ,  SAVACINI, Ricardo Gardiman ,  RIBEIRO, Thais Simões De Almeida ,  ALVES, Valdemir Rodrigues

IPC分类号： D21C7/12 ,  B01D25/32

摘要： The present invention is related to a method for unplugging or cleaning a screen in a continuous process kraft cooking digester process, wherein the continuous Kraft cooking digester comprises a plurality of screens, each screen having a digestion zone facing side and a digestor wall facing side, the plurality of screens disposed in a screen ring, the screen ring having at least one screen flow outlet leaving the digestor and at least one screen flow inlet entering the screen ring; the at least one screen flow inlet entering the screen ring providing a washing liquor to the screen for: unplugging, alkalinization treatment or both, without stopping the system.

公开(公告)号：WO2020234511A1

公开(公告)日：2020-11-26

申请号：PCT/FI2020/050324

申请日：2020-05-15

申请人： ANDRITZ OY

发明人： LAPPALAINEN, Heikki ,  NURMI, Juho ,  RISSANEN, Sauli ,  VIHAVAINEN, Esa

IPC分类号： D21C7/12 ,  G01N21/25 ,  G01J3/46 ,  G01N21/31 ,  G01N21/17

摘要： The invention enables determining the reduction rate of a recovery boiler using optical information from a chemical smelt sample. A processor is used to read a digital frame at least part of which represents the chemical smelt sample of the recovery boiler. An area of interest is determined from the digital frame read comprising at least part of the area in the digital frame representing the chemical smelt sample. Of the pixel values of the area of interest, one or more spectral characteristic values correlating with the change of reduction rate are determined. The reduction rate of the recovery boiler is determined using a reduction rate function of one or more of the determined spectral characteristic values weighted at predetermined weights.

公开(公告)号：WO2018201241A1

公开(公告)日：2018-11-08

申请号：PCT/CA2018/050512

申请日：2018-05-01

申请人： FPINNOVATIONS

发明人： ALLISON, Bruce James ,  REN, Wei ,  DUBORD, Brennan ,  JOHNSON, Jason

IPC分类号： D21C7/12 ,  D21C7/16

摘要： Methods and systems for controlling operation of a smelt dissolving tank receiving a flow of smelt and having a vent stack in fluid communication are provided. A dissolving liquid is injected into the smelt dissolving tank at a predetermined injection rate. A temperature of a flow of vapour in the vent stack is measured with a sensor. The injection rate of the dissolving liquid is controlled based on the temperature of the flow of vapour.

公开(公告)号：WO2015172787A1

公开(公告)日：2015-11-19

申请号：PCT/DK2014/050381

申请日：2014-11-12

申请人： BIOFUEL TECHNOLOGY A/S

发明人： JUHL FØNS, Mogens ,  BONDE, Torben

IPC分类号： C08B15/00 ,  C08B37/00 ,  C13K1/02 ,  D21C1/02 ,  D21C7/12 ,  C12P7/10 ,  D21C7/06

CPC分类号： D21C1/02 ,  C08H8/00 ,  C12P2201/00 ,  D21C7/06 ,  D21C7/12 ,  D21C11/0007

摘要： Methods and devices are provides for hydrothermal pretreatment of lignocellulosic biomass. A mechanically simple and inexpensive vertical steam reactor is fed with biomass feedstock from the top, while pretreated material is removed from the bottom in steady-state by operation of moveable upper and lower restrictor means, which project across the reactor cross section when engaged. The vertical column of biomass is supported by the upper restrictor means. This is periodically withdrawn from the reactor cross section, permitting the column of biomass to fall by force of gravity onto the lower restrictor means. The upper restrictor means is then re-inserted, after which the lower restrictor means is withdrawn permitting a "plug" of pretreated material to be removed by force of gravity. Using biomass feedstock that has been compressed in a reciprocating piston press to bulk density of at least 500 kg/m3, which can be fed dry into the reactor using simple, inexpensive sluice systems and then wetted inside the reactor, this system provides comparable biomass throughput at a fraction of the cost of traditional commercial hydrothermal pretreatment systems used in "second generation" biorefining.

摘要翻译： 提供木质纤维素生物质的水热预处理方法和装置。 机械简单且廉价的立式蒸汽反应器从顶部供给生物质原料，而预处理的材料通过可动的上下限制器装置在稳态下被从底部移除，其在接合时跨过反应器横截面。 生物质的垂直柱由上限制器支撑。 这是从反应器横截面周期性地撤出的，允许生物质柱由重力下降到下限制装置上。 然后重新插入上节流装置，之后将下限制器装置取出，允许预先处理的材料的“塞子”通过重力被移除。 使用已经在往复式活塞压力机中压缩至至少500kg / m 3的堆积密度的生物质原料，其可以使用简单廉价的闸门系统干燥进料到反应器中，然后在反应器内部润湿，该系统提供可比较的生物量 是“第二代”生物精炼中使用的传统商业水热预处理系统的一小部分成本。

公开(公告)号：WO2010114470A1

公开(公告)日：2010-10-07

申请号：PCT/SE2010/050351

申请日：2010-03-30

申请人： METSO FIBER KARLSTAD AB ,  HAGBERG, Johan ,  PERSSON, Kenneth ,  LYSÉN, Claes

发明人： HAGBERG, Johan ,  PERSSON, Kenneth ,  LYSÉN, Claes

IPC分类号： D21C7/12 ,  D21C3/24

CPC分类号： D21C7/12 ,  D21C3/24

摘要： The invention concerns a system and a method for the regulation of a continuous vapour phase digester (50). The relevant process inflows (CH, ST, WL, DL) are regulated with a process regulator (PC) depending on current process outflows (LIQRET, CHOUT) in order to establish a gas phase (STP) above a level (LIQLEV) of cooking fluid in the digester and a level of chips (CHLEV) in the digester that lies above the level of fluid. The process regulator has a first set of sensors (40, 41, 43) in order to control a first set of regulators (10, 11, 12, 13) in the input with respect to a first set of target values, and that [sic, syntax] the system comprises a load controller that is independent of the process regulator, which load controller has a second set of sensors (42) in order to control a second set of regulators (20, 21, 22, 23) in the input with respect to a second set of threshold values. The load controller closes at least one of the relevant inflows when these threshold values are exceeded. Alternatively, the load controller can open an otherwise closed line in order to reduce the volume of fluid in the digester.

摘要翻译： 本发明涉及一种用于调节连续气相消化器（50）的系统和方法。 为了建立高于烹饪水平（LIQLEV）的气相（STP），相关过程流入（CH，ST，WL，DL）根据当前工艺流出（LIQRET，CHOUT）用过程调节器（PC）进行调节 蒸煮器中的液体和位于流体水平以上的蒸煮器中的切屑水平（CHLEV）。 过程调节器具有第一组传感器（40,41,43），以便相对于第一组目标值来控制输入中的第一组调节器（10,11,12,13） 该系统包括独立于过程调节器的负载控制器，该负载控制器具有第二组传感器（42），以便控制第二组调节器（20,21,22,23） 相对于第二组阈值输入。 当超过这些阈值时，负载控制器关闭至少一个相关流入。 或者，负载控制器可以打开否则闭合的管线，以便减少蒸煮器中的流体的体积。