公开(公告)号：US20210010200A1

公开(公告)日：2021-01-14

申请号：US16606911

申请日：2018-05-01

申请人： FPInnovations

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

IPC分类号： D21C7/12 ,  D21C11/12

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：US10513823B2

公开(公告)日：2019-12-24

申请号：US15310606

申请日：2014-11-12

申请人： BIOFUEL TECHNOLOGY A/S

发明人： Mogens Juhl Føns ,  Torben Bonde

IPC分类号： D21C1/02 ,  D21C7/06 ,  D21C7/12 ,  C08H8/00 ,  B01J3/04 ,  B01J4/00 ,  B01J19/24 ,  B01J19/00 ,  D21C11/00

摘要： Methods and devices are provided 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 This is periodically withdrawn from the reactor cross section, permitting the column of biomass to fall by force of gravity onto the lower restrictor means. The upper restrictor means is then re-inserted, after which the lower restrictor means is withdrawn permitting a “plug” of pretreated material to be removed by force of gravity.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.

公开(公告)号：US20170342659A1

公开(公告)日：2017-11-30

申请号：US15534739

申请日：2014-12-12

申请人： CANFOR PULP LTD

发明人： Paul Alexandre Bicho ,  Edward Robert Grant ,  Pin-Wen Tsai ,  Najme Tavassoli

IPC分类号： D21C7/12 ,  G01N21/31 ,  G01N21/55 ,  D21C3/22 ,  G01N21/84

CPC分类号： D21C7/12 ,  D21C3/00 ,  D21C3/228 ,  D21C9/00 ,  G01N21/31 ,  G01N21/55 ,  G01N2021/8416

摘要： A method and apparatus for controlling a cellulosic pulp process for producing a pulp product having a desired pulp property is disclosed. The method involves illuminating an in-process portion of pulp using a first wavelength of light, and receiving a scattered light spectrum from the illuminated portion of pulp, the scattered light spectrum including spectral components that have been shifted in wavelength through interaction with a constituent of the illuminated portion of pulp. The method also involves filtering the scattered light spectrum to separate the spectral components, and identifying spectral features in the filtered scattered light spectrum that correspond to the pulp property. The method further involves generating a control signal for controlling the pulp process based on variations in the identified spectral features to cause the pulp property to fall within a desired range.

公开(公告)号：US20140196859A1

公开(公告)日：2014-07-17

申请号：US14215440

申请日：2014-03-17

申请人： Andrew Kallmes

发明人： Andrew Kallmes

IPC分类号： D21C7/12

CPC分类号： D21C7/12 ,  D21C3/26 ,  D21C7/14

摘要： A digestion apparatus is provided that include a vessel, a closure, and a fluid-transporting system. The vessel has a digestion chamber therein and an opening that provides access to the digestion chamber. The closure is adapted to interface with the vessel opening to form a fluid-tight seal against a digestion pressure and temperature within the chamber. The fluid-transporting system is adapted to direct fluid out of the digestion chamber back into the digestion chamber through an inlet port. A fluid transfer line may be interfaced with the closure, the line comprising a flexible hose and a quick-disconnect fitting, the fitting comprised of first portion associated with a self-sealing valve and a second portion that when mated downstream from the first portion allows fluid flow from the digestion chamber through the fitting.

摘要翻译： 提供了包括容器，封闭件和流体输送系统的消化装置。 容器在其中具有消化室，并且开口提供通向消化室的通路。 闭合件适于与容器开口相接触以形成抵抗腔室内的消化压力和温度的流体密封的密封。 流体输送系统适于通过入口将流体从消化室引导回消化室。 流体输送管线可以与封闭物接合，线路包括柔性软管和快速断开接头，该接头由与自密封阀相关联的第一部分和第二部分组成，当与第一部分配合在下游时允许 流体从消化室流过配件。

公开(公告)号：US08157964B2

公开(公告)日：2012-04-17

申请号：US11913420

申请日：2006-04-20

申请人： Bouchra Benjelloun Mlayah ,  Michel Delmas ,  Gérard Avignon

发明人： Bouchra Benjelloun Mlayah ,  Michel Delmas ,  Gérard Avignon

IPC分类号： D21C7/00 ,  D21C7/12

CPC分类号： D21C3/04 ,  D21C3/20

摘要： The invention proposes an installation (10) in which the impregnation and fractionation of the raw material (MP) are conducted at atmospheric pressure, characterized in that it comprises means (18, 20) for transferring the raw material (MP) successively to a first treatment station (PT1) and a second treatment station (PT2), each comprising means (G1, G2) for temporarily combining, at the first station (PT1), the raw material (MP) with a quantity of a first mixture of organic acids and, at the second station (PT2), for temporarily combining the raw material (MP) with a quantity of a second mixture; and means, after impregnation, for at least partially recovering the quantity of second mixture after impregnation and for recycling at least a portion of the second recovered mixture to form at least partially said first impregnation mixture used at the first station (PT1).

摘要翻译： 本发明提出了一种在大气压下进行原料（MP）的浸渍和分级的装置（10），其特征在于，其包括用于将原料（MP）连续转移到第一 处理站（PT1）和第二处理站（PT2），每个处理站（PT2）包括用于在第一站（PT1）处暂时组合一定量的第一有机酸混合物的装置（G1，G2） 并且在第二站（PT2）处，用于将原料（MP）与一定数量的第二混合物暂时组合; 以及在浸渍之后，在浸渍之后至少部分地回收第二混合物的量并且用于再循环第二回收混合物的至少一部分以形成在第一站（PT1）处使用的至少部分所述第一浸渍混合物的方法。

公开(公告)号：US20120058534A1

公开(公告)日：2012-03-08

申请号：US13044246

申请日：2011-03-09

申请人： Enos Loy Stover ,  Ted Ross Stover

发明人： Enos Loy Stover ,  Ted Ross Stover

IPC分类号： C12P5/02 ,  D21C7/12 ,  D21C1/00

CPC分类号： C02F3/006 ,  C02F3/286 ,  C02F2209/02 ,  C02F2209/04 ,  C02F2209/06 ,  C02F2209/08 ,  C02F2209/10 ,  C02F2209/12 ,  C02F2209/16 ,  C02F2209/40 ,  C12M21/04 ,  C12M41/26 ,  C12M41/28 ,  C12M41/32 ,  C12M41/48 ,  Y02E50/343

摘要： The present invention relates to a process for pretreatment of a feedstock in a pretreatment tank. Various parameters, such as oxidation-reduction potential, pH, and temperature, are monitored in the pretreatment tank to determine whether the oxidation-reduction potential, pH, and temperature are each within a predetermined range. The volume of feedstock inside the pretreatment tank is adjusted in response to a determination that one of the oxidation-reduction potential, pH, and temperature of the treated material are outside the corresponding predetermined ranges to maintain the oxidation-reduction potential, pH, and temperature of the treated material within operating conditions.

摘要翻译： 本发明涉及在预处理槽中预处理原料的方法。 在预处理槽中监测各种参数，例如氧化还原电位，pH和温度，以确定氧化还原电位，pH和温度是否均在预定范围内。 响应于确定处理材料的氧化还原电位，pH和温度之一在相应的预定范围之外，以保持氧化还原电位，pH和温度的确定来调节预处理槽内的原料体积 的处理材料。

公开(公告)号：US08009277B2

公开(公告)日：2011-08-30

申请号：US12290122

申请日：2008-10-27

申请人： Xin-Sheng Chai ,  Christopher L. Verrill

发明人： Xin-Sheng Chai ,  Christopher L. Verrill

IPC分类号： G01N21/01 ,  G01N21/33 ,  D21C7/12

CPC分类号： G01N21/33 ,  G01N21/05 ,  G01N21/552

摘要： A method for determining simultaneously from an oxidized black liquor sample an amount of sulfide, an amount of total dissolved solids, and an amount of effective alkali present in the sample, wherein the sulfide amount, the total dissolved solids amount, and the effective alkali amount are determined by subjecting the sample to attenuated total reflection (ATR) ultraviolet/visible (UV/V) spectroscopy over a wavelength of from about 190 to about 500 nm. Data from analyzing oxidized black liquor samples, and from analyzing one or more black liquor samples which may be subjected to black oxidation, may be used in a black liquor oxidation (BLOX) system for monitoring and/or controlling sulfur emissions from a kraft process.

摘要翻译： 一种从氧化黑液样品同时测定硫化物的量，总溶解固体的量和样品中存在的有效碱的量的方法，其中硫化物量，总溶解固体量和有效碱量 通过在约190至约500nm的波长下对样品进行衰减全反射（ATR）紫外/可见光（UV / V）光谱测定。 来自分析氧化黑液样品和分析一种或多种可能进行黑色氧化的黑液样品的数据可用于黑液氧化（BLOX）系统中，用于监测和/或控制来自硫酸盐法的硫排放。

公开(公告)号：US20100263812A1

公开(公告)日：2010-10-21

申请号：US12747713

申请日：2007-12-12

申请人： Salah Awadel-Karim

发明人： Salah Awadel-Karim

IPC分类号： D21C5/02 ,  D21C7/00 ,  D21C7/12

CPC分类号： D21C5/02 ,  D21C3/20 ,  Y02W30/648

摘要： An enhanced method of repulping paper and improving water quality by placing used paper product material in an aqueous solution of dipolar aprotic protophylic solvent, processing it, and recovering recycled pulp based on two physical reactions of the dipolar solvent: first with water from one part of the solvent, and second with cellulosic material from the other part of the solvent. The water reaction involves a rearrangement of hydrogen bonds within the water, improving its reactivity and solvent capacity, and the cellulosic reaction involves dissolution of hemicellulose in a manner which results in reduced fibre loss and improved pulp quality. The net result is more efficient pulping and reduced environmental impact.

摘要翻译： 通过将废纸产品材料放置在偶极非质子原料溶剂的水溶液中进行再加工并改善水质，加工它，并根据偶极溶剂的两个物理反应回收再循环纸浆：首先用水从一部分 溶剂，其次是来自溶剂的另一部分的纤维素材料。 水反应涉及水中氢键的重排，提高其反应性和溶剂能力，并且纤维素反应包括以导致纤维损失减少和纸浆质量改善的方式溶解半纤维素。 最终结果是更有效的制浆和减少对环境的影响。

公开(公告)号：US20090056890A1

公开(公告)日：2009-03-05

申请号：US12290352

申请日：2008-10-30

申请人： Dean Kenneth Lawrence ,  Wayne G. Hill ,  Stanislaus Leo Ludwig ,  David Richard Code

发明人： Dean Kenneth Lawrence ,  Wayne G. Hill ,  Stanislaus Leo Ludwig ,  David Richard Code

IPC分类号： D21C9/02 ,  D21C7/12

CPC分类号： D21C7/14 ,  D21C3/24 ,  D21C7/12

摘要： A continuous digester comprises a wash zone having a plurality of individual wash screens disposed about an inner wall of the digester for the withdrawal of co-current downflow liquor from the wash zone. A conduit is connected in fluid communication between each of the wash screens and a collector for co-current downflow liquor withdrawn from the wash zone of the digester. A valve is interposed along the length of the conduit leading from each of the wash screens. The valve is operable between open and closed positions in response to a signal received from a temperature sensor associated with the conduit leading from each of the wash screens. The signal represent changes in temperature of a corresponding co-current down flow liquor through a corresponding conduit wherein a corresponding valve permits adjustment of a corresponding flow rate of liquor through said corresponding conduit to a flow rate that is substantially equal to each of the other flow rates of co-current downflow liquor through each of the other conduits.

摘要翻译： 连续消化器包括洗涤区，其具有围绕消化器的内壁设置的多个单独的洗涤筛，用于从洗涤区中排出并流的下流液。 在每个洗涤筛网和从消化器的洗涤区域排出的并流下流液体的收集器之间流体连通的导管连接。 沿着从每个洗涤屏幕导出的导管的长度插入阀。 响应于从与每个洗涤屏幕导通的导管相关联的温度传感器接收到的信号，阀可在打开位置和关闭位置之间操作。 该信号表示通过相应导管的相应的并流下流液体的温度变化，其中相应的阀允许通过所述相应导管将液体的相应流速调节到基本上等于其它流量 通过每个其他导管的并流下流液体的速率。

公开(公告)号：US07387708B2

公开(公告)日：2008-06-17

申请号：US11221888

申请日：2005-09-09

申请人： Martti Heikkila ,  Kari Kovasin ,  Karl-Erik Röberg ,  Olavi Toukonummi

发明人： Martti Heikkila ,  Kari Kovasin ,  Karl-Erik Röberg ,  Olavi Toukonummi

IPC分类号： D21C7/12

CPC分类号： D21C7/08 ,  D21C9/007 ,  D21D5/28

摘要： A method and apparatus for treating pulp in connection with a blow tank or a storage tank. The pulp is discharged from a batch digester and fed either to the upper or the lower part of a blow tank, depending on the consistency of the pulp being discharged from the digester.

摘要翻译： 一种用于处理与鼓风罐或储罐相关的纸浆的方法和装置。 纸浆从分批蒸煮器排出，并根据从蒸煮器排出的纸浆的稠度将其送入吹瓶的上部或下部。