公开(公告)号：US12077911B2

公开(公告)日：2024-09-03

申请号：US17097957

申请日：2020-11-13

申请人： Buckman Laboratories International, Inc.

发明人： Mark D. Schroen ,  Sergio Arreola ,  Robert Brian White ,  Richard Lusk ,  Nate Brandeburg

IPC分类号： D21C3/22 ,  D21C3/24 ,  D21C9/02 ,  D21C9/06 ,  G01N33/34

CPC分类号： D21C3/228 ,  D21C3/24 ,  D21C9/02 ,  D21C9/06 ,  G01N33/343

摘要： A system and method are provided for predictive control of brown stock treatment at a pulp mill. Various online sensors generate output signals representative of actual values for respective process characteristics, each of which are directly or indirectly affected by adjustments to corresponding process variables. A controller uses the output signals or associated measurement data to dynamically set target values for the process characteristics based on a predicted impact of control responses for corresponding process variables. The controller further generates control signals to actuators associated with the respective process variables based on detected variations between the respective actual values and target values. Exemplary brown stock washing control systems may optimize various types of brown stock washing configurations, including for example vacuum drum washers, compaction baffle washers, chemiwashers, direct displacement washers and wash presses. Cloud-based analytics and machine learning may also be implemented to improve the control algorithms over time.

公开(公告)号：US12060679B2

公开(公告)日：2024-08-13

申请号：US17212345

申请日：2021-03-25

申请人： Bradley University ,  The United States of America, as represented by the Secretary of Agriculture

发明人： Brent Tisserat ,  Luke Haverhals ,  Zengshe Liu

IPC分类号： D21C3/02 ,  C08L97/02 ,  D21C3/20 ,  D21C3/22 ,  D21C5/00 ,  D21C5/02 ,  D21H11/12 ,  D21H11/14 ,  D21H21/18 ,  D21H21/34 ,  D21H21/36 ,  D21J3/00 ,  D21J5/00

CPC分类号： D21C3/022 ,  C08L97/02 ,  D21C3/02 ,  D21C3/20 ,  D21C3/22 ,  D21C5/00 ,  D21C5/022 ,  D21H11/12 ,  D21H11/14 ,  D21H21/18 ,  D21H21/34 ,  D21H21/36 ,  D21J3/00 ,  D21J5/00 ,  C08L2201/06

摘要： Unique, inexpensive, and. strong biocomposites are obtained from blending cellulose matrix materials pith lignocellulosic reinforcement materials with the aid of alkaline aqueous solvent and cold temperatures. These lignocellulosic composites (LCs) are produced without use of any thermoplastic resins, adhesives, catalysts, plasticizers or d chemical or physical procedures. The LCs include a matrix and a reinforcement material. The matrix is a cellulose material (e.g., cotton, hemp, flax, or wood) that is liquefied using an aqueous alkaline solvent solution under cold temperatures to more readily adhere and or incorporate/encapsulate the lignocellulosic reinforcements (wood chips, fibers, and other lignocellulosic sources).

公开(公告)号：US12039239B2

公开(公告)日：2024-07-16

申请号：US17183962

申请日：2021-02-24

申请人： Valmet Automation Oy

发明人： Jarmo Mansikkasalo

IPC分类号： G06F30/28 ,  D21C3/22 ,  D21C11/00 ,  F23G7/04 ,  G06F30/27 ,  G06F113/08

CPC分类号： G06F30/28 ,  D21C3/228 ,  D21C11/0057 ,  F23G7/04 ,  G06F30/27 ,  G06F2113/08

摘要： A method for obtaining information on quality of combustion of a liquor in a chemical recovery boiler. The method comprises entering a value of a first input parameter to a computational model configured to determine, based on the value of the first input parameter, a value of the quality of combustion of the liquor in the chemical recovery boiler, and at a first time, running the computational model to obtain a first modelling result. The method comprises measuring, from the chemical recovery boiler a value indicative of carryover to obtain a measurement result; comparing the first modelling result with [a] the measurement result or [b] a result derived from the measurement result, to obtain a primary comparison result; and adjusting the value of the first input parameter based on the primary comparison result to obtain an adjusted value of the first input parameter. The method comprises entering the adjusted value of the first input parameter to the computational model, and at a second time, running the computational model to obtain the information on quality of combustion of the liquor in the chemical recovery boiler.

公开(公告)号：US11905655B2

公开(公告)日：2024-02-20

申请号：US16941931

申请日：2020-07-29

申请人： ECOLAB USA INC.

发明人： Luiz Wanderley Bratfisch Pace ,  Prasad Yogendra Duggirala

IPC分类号： D21C11/10 ,  D21C3/22 ,  D21C11/00

CPC分类号： D21C11/106 ,  D21C3/226 ,  D21C11/0092

摘要： The disclosure provides methods and compositions for reducing the viscosity of black liquor. Also provided are methods of inhibiting deposition of scale and methods of processing black liquor. In some embodiments, the compositions include a carboxylate-containing polymer and an inorganic salt. In some embodiments, the compositions include a carboxylate-containing polymer, an inorganic salt, and a surfactant.

公开(公告)号：US11851815B2

公开(公告)日：2023-12-26

申请号：US17511445

申请日：2021-10-26

申请人： Pierson Capital Environmental (Beijing) Limited

发明人： Feng Ling

IPC分类号： D21C3/20 ,  D21C9/00 ,  D21C11/00 ,  D21C3/00 ,  D21C3/22 ,  B01D1/00 ,  B01D1/26 ,  B01D3/14 ,  B01D3/38 ,  B04B11/02 ,  B04B11/08 ,  C05F5/00 ,  C07G1/00 ,  C08B1/08 ,  C08L5/14 ,  C12F3/10 ,  B01D3/00 ,  C08B37/14 ,  D21C11/10

CPC分类号： D21C3/20 ,  B01D1/0041 ,  B01D1/26 ,  B01D3/007 ,  B01D3/146 ,  B01D3/148 ,  B01D3/38 ,  B04B11/02 ,  B04B11/08 ,  C05F5/008 ,  C07G1/00 ,  C08B1/08 ,  C08B37/14 ,  C08L5/14 ,  C12F3/10 ,  D21C3/003 ,  D21C3/222 ,  D21C9/004 ,  D21C9/007 ,  D21C11/0007 ,  D21C11/0042 ,  D21C11/10

摘要： The invention is directed to compositions and processes concerning efficient downstream processing of products derived from organic acids pretreatment of plant materials.

公开(公告)号：US20230313456A1

公开(公告)日：2023-10-05

申请号：US17996527

申请日：2021-03-17

申请人： Messer Austria GmbH

发明人： Bernhard Thaller

IPC分类号： D21C11/00 ,  D21C3/02 ,  D21C3/22 ,  D21C9/147

CPC分类号： D21C11/0057 ,  D21C9/147 ,  D21C3/222 ,  D21C3/026

摘要： In a process for oxidation of white liquor, in particular of white liquor used in a process of production of paper or cellulose, the oxygen required for the oxidation is supplied to the reactor or the reactors in which the oxidation is carried out at least partially in the form of oxygen-containing nanobubbles. Due to the relatively long lifetime of the nanobubbles this very efficiently provides oxygen also for oxidation reactions in the white liquor proceeding at different rates.

公开(公告)号：US20230265611A1

公开(公告)日：2023-08-24

申请号：US18004190

申请日：2021-06-23

申请人： AMPPC Finland Oy

发明人： Matti KURKI

IPC分类号： D21C11/00 ,  D21C1/02 ,  D21C3/06 ,  D21C3/22 ,  D21C9/18

CPC分类号： D21C11/0007 ,  D21C1/02 ,  D21C3/06 ,  D21C3/22 ,  D21C9/18

摘要： A cooking method and a digester system wherein partly digested cellulosic fiber source is compressed during cooking to provide high molecular weight xylan, high molecular weight lignin and pulp.

公开(公告)号：US20230124761A1

公开(公告)日：2023-04-20

申请号：US18066119

申请日：2022-12-14

申请人： EVRNU, SPC

发明人： Stacy Flynn ,  Christopher Stanev

IPC分类号： C08J11/10 ,  C08J11/08 ,  D01F11/08 ,  D01F11/02 ,  D21C5/00 ,  D21C3/20 ,  C08J11/16 ,  D21C3/22 ,  D21C9/00 ,  D21C1/02 ,  D21C9/10 ,  C08J11/18 ,  D21B1/02

摘要： Methods and systems of the present invention use mixed textile feedstock, which may include post-consumer waste garments, scrap fabric and/or other textile materials as a raw feed material to produce isolated cellulose and other isolated molecules having desirable properties that can be used and be used in the textile and apparel industries, and in other industries. A multi-stage process is provided, in which mixed textile feed material is subjected to one or more pretreatment stages, followed by at least two pulping treatments for isolating cellulose molecules and other molecular constituents, such as polyester. The isolated cellulose and polyester molecules may be used in a variety of downstream applications. In one application, isolated cellulose and polyester molecules are extruded to provide regenerated cellulose fibers and regenerated polyester fibers having desirable (and selectable) properties that are usable in various industrial applications, including textile production.

公开(公告)号：US20230118469A1

公开(公告)日：2023-04-20

申请号：US17911999

申请日：2021-05-07

申请人： Valmet Technologies Oy

发明人： Robert Mohr

IPC分类号： D21H11/14 ,  D21C3/22 ,  D21C9/18 ,  D21D5/02

摘要： Recycled fibers are produced from MDF or HDF containing material, for instance for use in MDF or HDF production by steaming (2) the MDF or HDF containing material for a predetermined time to obtain steamed material, subjecting the steamed material to a pulping process (3) to obtain a slurry, screening (4a, 4b) the slurry to remove oversize particles to obtain a screened slurry, dewatering (5) the screened slurry to obtain dewatered fibers and refining or fluffing (6) the dewatered fibers to obtain said recycled fibers. A method for producing MDF or HDF boards using such recycled fibers is also provided. Corresponding systems for producing recycled fibers and producing MDF or HDF boards are also provided.

公开(公告)号：US20230046123A1

公开(公告)日：2023-02-16

申请号：US17885313

申请日：2022-08-10

申请人： Hubei Jinhanjiang Refined Cotton Co., Ltd.

发明人： Hangxu ZHOU ,  Zongqing FAN ,  Jintao FAN

IPC分类号： D21C3/02 ,  D21C1/06 ,  D21C3/22 ,  D21C3/00 ,  D21C7/10 ,  D21C9/14 ,  D21C9/02

摘要： A process for producing refined cotton with a high polymerization degree includes: a. selection of material; b. impurity removal; c. impregnation; d. pretreatment: compounding triethanolamine, sodium carbonate, copper sulfate and magnesium oxide in equal proportion to form a cooking compound adjuvant with a mass concentration of 0.2-0.5%, putting the cookingcompound adjuvant into a spherical digester together with the cotton linter subjected to the impregnation treatment, heating to 70 C, stopping heating, and subjecting to idling pretreatment for 40-60 min; e. cooking; f. cooling of the spherical digester; g. formulating a chlorine dioxide bleaching stabilization solution; h. a first stage of bleaching; I. alkali treatment; J. a second stage of bleaching; K. dechlorination; and 1. rolling and drying by baking.