CN103003487B - The method of producing high α dissolving pulp and systems - Google Patents

The method of producing high α dissolving pulp and systems Download PDF

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CN103003487B
CN103003487B CN 201080067879 CN201080067879A CN103003487B CN 103003487 B CN103003487 B CN 103003487B CN 201080067879 CN201080067879 CN 201080067879 CN 201080067879 A CN201080067879 A CN 201080067879A CN 103003487 B CN103003487 B CN 103003487B
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CN 201080067879
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CN103003487A (en )
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M·M·莱特
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巴伊亚特种纤维素公司
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C1/00Pretreatment of the finely-divided materials before digesting
    • D21C1/06Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00Regeneration of pulp liquors or effluent waste waters
    • D21C11/0021Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00Regeneration of pulp liquors or effluent waste waters
    • D21C11/0021Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
    • D21C11/0028Effluents derived from the washing or bleaching plants
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00Regeneration of pulp liquors or effluent waste waters
    • D21C11/0035Introduction of compounds, e.g. sodium sulfate, into the cycle in order to compensate for the losses of pulping agents
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00Regeneration of pulp liquors or effluent waste waters
    • D21C11/10Concentrating spent liquor by evaporation
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00Pulping cellulose-containing materials
    • D21C3/02Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00Regeneration of pulp liquors or effluent waste waters
    • D21C11/0064Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00Regeneration of pulp liquors or effluent waste waters
    • D21C11/0085Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle

Abstract

与预水解牛皮纸浆制法(PHKP)结合使用的浆加工方法,包括将木屑或相似的材料加入反应容器,进行预水解,和用第一量的烧碱液、之后是不同的溶液如冷碱提取碱性滤液—任选地用烧碱液提浓—中和混合物。 Prehydrolysis used in conjunction with the Kraft process (PHKP) plasma processing method, wood chips or similar materials comprising a reaction vessel, pre-hydrolysis, and a first amount of a liquid with caustic soda, followed by different solutions, such as cold alkaline extraction the alkaline filtrate - optionally with caustic concentrate - and mixtures thereof. 用煮液替换中和液,所述煮液包括热黑液和碱性滤液,任选地用烧碱液提浓。 Cooking liquor and replaced with the liquid, said hot black liquor and cooking liquor comprising alkaline filtrate optionally concentrate with liquid caustic soda. 煮液可具有相对高的有效碱浓度。 It may have a cooking liquor relatively high effective alkali concentration. 蒸煮的浆可显示非常低的残留半纤维素和最佳范围内的卡伯值。 The cooked slurry may show very low residual hemicellulose and kappa number within the optimum range.

Description

高α溶解浆生产的方法和系统 The method of producing high α dissolving pulp and systems

[0001] 发明背景发明领域 [0001] BACKGROUND OF THE INVENTION Field of the Invention

[0002] 发明领域总体上涉及浆加工,更具体地涉及结合牛皮纸化学制浆方法处理来自冷碱提取(caustic extraction)的流出物的改进的方法和系统。 It relates to a slurry process [0002] Field of the invention and, more particularly, to a method of binding kraft chemical pulping process improved methods and systems the effluent from the cold alkaline extraction (caustic extraction) of.

[0003] 背景 [0003] BACKGROUND

[0004] 来自木材和植物材料的浆具有大量的商业用途。 [0004] Wood pulp from plant material and having a large number of commercial uses. 虽然最常见的用途之一是在造纸中,但是浆还可用于生产许多其它产品,包括人造丝和其它合成材料以及醋酸纤维素和纤维素酯,其用于,例如,制造过滤丝束(filter tow)、布、包装薄膜和炸药。 Although one of the most common uses is in papermaking, pulp but can also be used to produce many other products, including rayon and other synthetic materials as well as cellulose acetate and cellulose esters, for example, for producing filter tow (filter TOW), cloth, packaging films and explosives.

[0005] 存在许多加工木材和植物材料以制造浆和纸的化学和机械方法。 [0005] In the manufacturing method of the pulp and paper, chemical and mechanical wood processing and the presence of many plant material. 基本的加工步骤包括准备原料(例如,剥皮和切碎)、用机械或化学手段(例如,磨碎、精炼或蒸煮)分离木纤维以从木纤维的纤维素分离木质素和提取物、通过漂白去除着色剂、和将产生的加工的浆形成纸或其它产品。 The basic processing steps include preparation of raw materials (e.g., peeling and chopping), wood fibers separated by mechanical or chemical means (e.g., grinding, refining or cooking) to separate lignin from cellulose fibers and wood extracts, by bleaching removing a colorant slurry, and the resulting processed paper or other product form. 除了和结合浆和纸制造,造纸厂还通常具有生产和回收化学剂,收集和加工副产品以产生能量,和去除和处理废物以使对环境影响减到最小的设施。 In addition to and in conjunction with pulp and paper manufacture, paper production and recovery also typically has a chemical agent, collecting and processing by-products to produce energy, and the removal and disposal of waste so that to minimize the environmental impact of the installation.

[0006] "制浆(pulping) "通常指实现纤维分离的过程。 [0006] "Pulp (Pulping)" generally refers to a fiber separation process implemented. 木材和其它植物材料包括纤维素、 半纤维素、木质素和其它次要成分。 Wood and other plant materials comprising cellulose, hemicellulose, lignin and other minor ingredients. 木质素是散布在个体纤维之间的聚合物网络,并充当细胞间粘合剂以将个体木纤维粘结在一起。 Lignin is a polymer dispersed network between the individual fibers, and acts as an adhesive between the cells to the individual wood fibers together. 在制浆工艺期间,破碎木质素大分子,由此解放个体纤维质纤维和溶解可引起纸或其它终产品变色和将来分解的杂质。 During the pulping process, the lignin macromolecules broken, whereby the liberation of individual cellulosic fibers and the paper can cause dissolution or other discoloration of the final product and the decomposition of impurities in the future.

[0007] 牛皮纸浆制法是通常使用的制浆工艺。 [0007] The Kraft method of pulping process is generally used. 例如,可使用从牛皮纸制浆工艺生产的纸, 来制备包装工业中使用的漂白的盒纸板和衬板。 For example, a paper produced from the kraft pulping process, and boxboard prepared bleaching liner used in the packaging industry. 传统的牛皮纸浆制法用被称作"烧碱液"的氢氧化钠和硫化钠的水性混合物处理木材。 The aqueous mixture was conventional Kraft method is referred to as a "caustic" is sodium hydroxide and sodium sulfide for treating wood. 该处理破坏木质素和纤维素之间的连接和将大部分木质素和部分半纤维素大分子降解成在强碱溶液中可溶的碎片。 The treatment destroys most of the lignin and the connecting portion and hemicellulose macromolecules between lignin and cellulose into soluble degradation in alkali solution debris. 将木质素从周围的纤维素释放的该过程称作去木质作用。 This process will be released from the lignin surrounding the cellulose is referred to as delignification. 此后将可溶的部分从纤维素浆分离。 After separating the soluble fraction from the cellulose pulp.

[0008] 图1显示传统的牛皮纸浆制法100的流程图。 [0008] FIG. 1 shows a flowchart of a conventional Kraft method 100. 方法100包括将木肩(chip)(或其它含有有机浆的原料)118和碱性溶液投入到称作消化器的高压反应容器中以实现去木质作用,这被称作"蒸煮"阶段121。 The method 100 includes a timber shoulder (Chip) (or other organic feedstock containing slurry) and alkaline solutions 118 into the high pressure reaction vessel called a digester to effect delignification, this is called "cooking" stage 121. 将木肩与烧碱液111混合,烧碱液111可从下游过程产生或由单独的来源提供。 The timber shoulder 111 with the caustic mixture, caustic 111 may be generated or provided by a separate source from the downstream process. 去木质作用可需要几个小时,将去木质作用的程度表示为无单位"H 因子",这被通常定义,以便在l〇〇°C煮一小时等于1的Η因子。 The degree of delignification can take several hours, the delignification represents a unitless "H factor", which is usually defined to cook a factor equal to 1 hour in Η l〇〇 ° C. 因为高温,由于蒸汽的引入, 反应容器常常被加压。 Because the high temperature, due to the introduction of steam, the reaction vessel is usually pressurized. 蒸煮步骤将近结束时,将反应容器降低到大气压,由此释放蒸汽和挥发物。 When near the end of the cooking step, the reaction vessel is reduced to atmospheric pressure, thereby releasing the steam and volatiles.

[0009] 蒸煮中使用的烧碱液可以是,例如,含有氢氧化钠(NaOH)和硫化钠(Na2S)的苛性碱溶液。 [0009] The caustic solution can be used in cooking, for example, a caustic solution containing sodium hydroxide (NaOH) and sodium sulfide (of Na2S) is. 烧碱液的性质常常以有效碱(EA)和硫化度(sulfidity)来表示。 Often caustic nature of the effective alkali (EA) and the degree of vulcanization (sulfidity) is represented. 有效碱浓度可被计算为氢氧化钠的重量加硫化钠的二分之一重量,并代表每升液体的氢氧化钠当量,表示为克每升。 EA concentration can be calculated as one-half weight by weight of sodium hydroxide plus sodium sulfide, sodium hydroxide and represent equivalents per liter of liquid, expressed as grams per liter. 有效碱载量如氢氧化钠表示每木材烘干重量的氢氧化钠当量,以百分数表示。 An effective amount of a base such as sodium expressed as sodium hydroxide contained equivalent weight per dry wood, expressed as a percentage. 硫化度是硫化钠的二分之一重量与氢氧化钠的重量和硫化钠的二分之一重量之和的比,以百分数表示。 And the degree of cure is the ratio of the weight of one-half the weight of sodium sulfide and sodium hydroxide by weight and one-half sodium sulphide, expressed as a percentage.

[0010] 蒸煮之后,褐色的固态纤维质浆一一也称作"粗浆"一一从蒸煮阶段121中使用的消化器中释放,并然后在清洗和筛选工艺122中被筛选和清洗。 [0010] After cooking, brown solid cellulosic pulp eleven also known as "brownstock" digester eleven used in the cooking stage 121 is released, and then screened and cleaned in the cleaning and screening process 122. 筛选使浆与碎片(shive) (木纤维束)、结(未煮的木肩(chip))、污物和其它碎肩(debris)分离。 And fragments of screening pulp (Shive) (Wood fiber bundle), the junction (uncooked timber shoulder (Chip)), dirt and other debris shoulder (debris) separated. 与浆分离的材料有时被称作"废料(reject)",浆被称作"良浆(accept)"。 Separated from the pulp material is sometimes referred to as "waste material (reject)", the slurry is referred to as "the accept (Accept)." 多阶段级联操作常常用于减少废料物流中纤维质纤维的量而保持良浆物流中的高纯度。 Multi-stage cascade operation is often used to reduce the amount of cellulosic fibers in the waste stream while retaining good pulp stream of high purity. 进一步的纤维回收可通过下游精制机或消化器中筛和结的再加工来实现。 Further the fibers may be achieved by recycling a downstream digester or refiner junction sieve and reprocessing.

[0011] 然后可将粗浆进行几个连续的清洗阶段以将用过的煮液和溶解的物质与纤维素纤维分离。 [0011] The crude slurry can then be carried out in several successive washing stages in the spent cooking liquor and dissolved substances separated from the cellulose fibers. 来自蒸煮阶段121中使用的消化器的废煮液112和从清洗和筛选工艺122收集的液体113,由于它们的着色,通常都被称作"黑液"。 From spent digester cooking stage 121 used in the cooking liquor and 112 from the cleaning liquid collection and screening process 122,113, due to their coloration, generally referred to as "black liquor." 黑液通常含有木质素碎片(fragment)、来自破碎的半纤维素的碳水化合物和无机物。 Generally contain black liquor lignin fragments (fragment), from a broken hemicellulose carbohydrates and inorganic substances. 黑液可用于一一除了蒸煮步骤的烧碱液一一如例如图1中箭头所显示的,表示清洗和筛选工艺122中产生的并被转移到蒸煮阶段121的黑液113。 In addition to the cooking liquor can be used in eleven steps as caustic eleven e.g. the arrow shown in FIG. 1, showing the cleaning and screening process and transferred 122 to the digestion stage to produce liquor of 113,121. 如果需要获得合适的碱浓度或为了其它相似的目的,也可将来自积累罐(图1中未显示)的黑液135投到作为蒸煮阶段121部分的消化器。 If you need a suitable base concentration, or for other similar purposes, may also be from the accumulation tank (not shown in FIG. 1) is put into a digester 121 135 liquor portion digestion stage.

[0012] 然后可将来自清洗和筛选工艺122的净化的粗浆131与烧碱液114混合并投入到反应容器以进一步从较长的纤维素纤维中分离溶解的物质如半纤维素和低分子量纤维素。 [0012] can then be cleaned from the purification process and screened brownstock 114 122 131 mixed with caustic soda solution and put into a reaction vessel for further separation of substances dissolved from the cellulose fibers as long hemicellulose and a low molecular weight fibers Su. 示例性的分离方法是所谓的冷碱提取("CCE")法,并在图1中由CCE反应阶段123表示。 An exemplary separation process is called cold alkaline extraction ( "CCE") method, and expressed by the CCE reaction stage 123 in FIG. 提取受影响的温度可变化,但通常的范围小于60°C。 Extraction can be affected by temperature, but is usually in the range of less than 60 ° C.

[0013] 然后将来自CCE反应阶段123中使用的反应器的纯化的浆132与用过的冷的苛性碱溶液和溶解的半纤维素分离,并在CCE清洗阶段124中的第二清洗和分离装置中洗几次。 The purified slurry [0013] from the reactor and then the reaction stage CCE 123 and 132 for use in the dissolved hemicellulose separated from the spent cold caustic solution and washed in a second washing stage 124 and separating the CCE means washed several times. 产生的纯化的具有相对高的α纤维素含量的褐色浆(brown pulp) 133仍然含有一些木质素,继续到进一步去木质作用的下游漂白装置。 Purification of the brown pulp (brown pulp) having a relatively high α-cellulose content of the resulting 133 still contain some lignin, continues to a downstream bleach plant further delignification. 在一些浆生产工艺中,漂白在CCE反应阶段123和CCE清洗阶段124之前进行。 In some pulp production processes, the bleaching stage carried out at 123 CCE and CCE reaction stage 124 before cleaning.

[0014] 在许多应用,如合成材料或药剂的制造中,期望具有非常高纯度或质量的浆。 [0014] In many applications, such as synthetic material or for producing a medicament, it is desirable slurry having a very high purity or quality. 浆质量可通过几个参数来评价。 Pulp quality may be evaluated by several parameters. 例如,α纤维素含量的百分比表示加工的浆的相对纯度。 For example, the percentage of α-cellulose content of the representation of the relative purity of the pulp processing. α纤维素含量可基于浆溶解度(例如,下面描述的S10和S18因素)来估计和计算。 α-cellulose content may be estimated based on the pulp and calculated solubility (e.g., S10 and S18 the factors described below). 去木质作用和纤维素降解的程度分别通过卡伯值("ΚΝ")和浆粘度来测量。 Delignification degree of cellulose degradation were measured by kappa number ( "ΚΝ") and plasma viscosity. 较高的浆粘度指示较长的纤维素链长度和较少的降解。 Higher paste viscosity indicate a longer chain length and less cellulose degradation. 衆和纸工业技术协会(Technical Associationof Pulp and Paper Industry) (TAPPI)的标准236om-99指定了测定衆卡伯值的标准方法。 Standard Technical Association of Public and Paper Industry (Technical Associationof Pulp and Paper Industry) (TAPPI) 236om-99 specifies a standard method for determining all the Kappa number. 卡伯值是浆的木质素含量或漂白率的指示。 Kappa value is an indication of the lignin content or bleachability of pulp. 18wt%氢氧化钠水溶液中的浆溶解度("S18")提供残留半纤维素量的估计。 Solubility 18wt% slurry in aqueous sodium hydroxide ( "S18") to provide an estimate of the residual amount of hemicellulose. l〇wt%氢氧化钠水溶液中的浆溶解度("S10")提供碱性溶液中溶解物质的总量的指示,其包括半纤维素和降解的纤维素之和。 Solubility pulp ( "S10") l〇wt% aqueous sodium hydroxide to provide an indication of the total amount of dissolved material in an alkaline solution comprising hemicellulose and cellulose, and degradation. 最后,S10和S18之间的差异指示碱溶解的碎片的纤维素的量。 Finally, the amount of cellulose fragments indicative of a difference between the alkali dissolution of S10 and S18.

[0015] 传统的技术可获得具有92%和96%之间的α纤维素含量的纯化的浆,虽然历史上非常难达到该范围上端的纯度,特别是同时保持浆的其它需要的性质如高粘度(即,由浆工艺引起的有限的纤维素降解)。 Properties [0015] conventional art can be obtained with the purified α-cellulose content of between 92% and 96% of the pulp, although historically very difficult to reach the upper end of the range of purity, in particular, while maintaining other desired pulp such as high viscosity (i.e., limited cellulose degradation caused by the slurry process).

[0016] 在传统工艺中,来自CCE清洗和分离阶段124的滤液116--也称作CCE碱性滤液--包括用过的冷的苛性碱溶液和来自清洗和分离阶段124的用过的洗液。 [0016] In the conventional process, and the washing filtrate 116-- CCE from separation stage 124 is also referred to CCE alkaline filtrate - including cold spent caustic from the washing solution and wash and separation stage used 124 liquid. 该滤液116 常常含有大量的高分子半纤维素。 The filtrate 116 containing a large amount of a polymer is often hemicellulose. 当循环具有高半纤维素含量的滤液用作蒸煮阶段121的消化器中的煮液部分时,半纤维素可从溶液中沉淀出来并沉积在纤维质纤维上。 When part of the digester cooking liquor having a high hemicellulose filtrate circulating levels used in the cooking stage 121, hemicelluloses can be precipitated from the solution and deposited on the cellulosic fibers. 这可阻止获得高质量浆。 This may be prevented from accessing high-quality pulp. 另一方面,某些应用一一如高质量纱或合成织物、用于液晶显示器的材料、 由醋酸酯衍生物制成的产品、粘胶产品(如轮胎帘布和专用纤维)、香烟中使用的过滤丝束部分和某些食品和药物应用一一需要含有最小量的再沉积的半纤维素和高α纤维素含量的浆。 On the other hand, some applications, such as eleven high-quality yarn or synthetic fabrics, materials for liquid crystal displays, made of acetate derivative products, glue products (e.g., tire cord and special fibers), used in cigarettes section filter tow and certain food and pharmaceutical applications require eleven hemicellulose containing pulp and a high α-cellulose content of a minimum amount of redeposition.

[0017] 如图1所显示的,部分CCE碱性滤液116不得不被放出到回收区134以控制蒸煮阶段121中半纤维素再沉积。 [0017] FIG. 1 shows, CCE alkaline filtrate portion 116 have to be released into the recovery zone 134 to control the cooking stage 121 hemicellulose redeposition. 送到回收区134的转移的CCE碱性滤液116可与过量的黑液混合、浓缩并在回收锅炉中燃烧以消耗有机物和回收无机盐。 Transferred to the recovery section 134. CCE alkaline filtrate 116 may be mixed with an excess of black liquor is concentrated and burned to consume organic matter and inorganic salts recovered in the recovery boiler. 然后可能需要新碱源来替换送到回收区134的CCE滤液和黑液,以保持蒸煮阶段121中适当的碱平衡。 You may then need to be replaced with a new source of alkali CCE filtrate and black liquor recovery zone 134 to maintain the proper balance of alkaline cooking stage 121.

[0018] 传统的工艺没有提供获得合适的α含量的纤维素的有效的或有成本效益的手段,该合适的α含量的纤维素可以是多种工业、制药和材料用途一一包括上面鉴定的那些--需要的。 [0018] The conventional processes do not provide an effective means for obtaining a suitable or α cellulose content of cost-effective, the appropriate α cellulose content may be a variety of industrial, pharmaceutical and material applications identified above - including those - need.

[0019] 存在导致具有非常高的α纤维素含量的溶解浆的浆加工方法和系统的需要。 [0019] The present method and result in the need pulp processing system having a very high dissolving pulp cellulose content of α. 进一步存在提供通过防止半纤维素再沉积而制备高α溶解浆的有效的和有成本效益的方式的浆加工方法和系统的需要。 There further exists to provide effective and by preventing redeposition of producing high α hemicellulose dissolving pulp slurry processing methods and systems require a cost-effective manner.

[0020] 发明概述 [0020] Summary of the Invention

[0021] -方面,改进的制浆方法和系统包括用烧碱液提浓(enrich)用于蒸煮阶段的黑液和冷碱提取(CCE)碱性滤液中的一个或多个。 [0021] - aspect, the improved method and system comprises a pulping liquid caustic soda concentrate (Enrich) used for black liquor and cooking stages of the cold caustic extraction (CCE) one or more basic filtrate.

[0022] 根据一个或多个实施方式,结合牛皮纸浆制法使用的制浆方法和系统包括具有以下步骤的蒸煮阶段:将木肩或其它含有有机浆的材料投入消化器或相似的反应容器,进行一系列连续的工艺时期:预水解、用烧碱液和CCE碱性滤液--任选地用烧碱液提浓-- 中和碎片、用热黑液和/或CCE碱性滤液(任一或二者用烧碱液提浓)填充消化器和以有效造成去本质作用的时间进行蒸煮。 [0022] According to one or more embodiments, kraft pulping process and the combined system comprising a pulp cooking phase having the following method steps: the wood or other material containing an organic shoulder slurry into the digester or similar reaction vessel, a series of continuous process time: prehydrolysis with caustic alkaline filtrate and CCE - optionally with caustic concentrate - and debris, with the hot black liquor and / or CCE alkaline filtrate (either or both caustic soda solution concentrate) for filling the digester and the cooking time effective to cause the essence of action. 这些步骤之后可以是冷置换和浆排出。 These steps may be cold plasma discharged and replaced.

[0023] 蒸煮阶段之后,另外的步骤可包括处理产生的粗浆以产生半纯化的浆、用苛性碱溶液提取半纯化的浆以产生纯化的浆和含有半纤维素的溶液、从纯化的浆中分离含有半纤维素的溶液、清洗纯化的浆和收集由此产生的碱性滤液并在消化器中利用显著部分的碱性滤液(任选地通过蒸发或其它方法浓缩)。 After [0023] the cooking stage, the additional processing step may include generating the brownstock to produce a semi-purified pulp, semi-purified extract of the pulp with caustic solution to produce a slurry and the solution containing the purified hemicellulose purified from the slurry separating the solution containing hemicellulose, alkaline wash filtrate collected and purified the resulting slurry using a significant portion of the alkaline filtrate in the digester (optionally concentrating by evaporation or other methods). 全部工艺可有助于防止半纤维素沉积,提高高α 溶解浆的纯度和增加整个制浆系统的效率。 All process may help to prevent deposition of hemicellulose, increasing the purity of dissolving pulp and high α increases efficiency of the entire pulping system.

[0024] 另外的实施方式、备选方案和变化也在本文中被描述或在附图中显示。 [0024] Further embodiments, variations and alternatives are also shown in the drawings or described herein.

[0025] 附图简述 [0025] BRIEF DESCRIPTION

[0026] 图1是如本领域所周知与浆生产结合使用的传统的预水解牛皮纸制浆工艺的总的工艺流程图。 [0026] Figure 1 is well known in the art in combination with conventional pulp production prehydrolysis kraft pulping process is a process flow diagram of the total.

[0027] 图2是结合冷碱提取工艺清洗和清洁纸浆的传统的系统和相关工艺的图。 [0027] FIG. 2 is a diagram of a system and associated traditional binding processes cold caustic extraction process of washing and cleaning of the pulp.

[0028] 图3是如可用于预水解牛皮纸制浆工艺的蒸煮的传统的系统和相关工艺的图。 [0028] FIG. 3 is a view as may be prehydrolyzed kraft pulping processes conventional cooking systems and related processes.

[0029] 图4是根据如本文所公开的一个实施方式的浆生产工艺的系统和相关工艺的总的工艺流程图。 [0029] FIG. 4 is an overall process flow diagram according to one embodiment as disclosed herein, the process of pulp production processes and related systems.

[0030] 图5是根据如本文所公开的一个实施方式的结合浆生产工艺使用的蒸煮阶段的系统和相关工艺的图。 [0030] FIG. 5 is a system and process related FIG cooking stage of pulping process used in combination in accordance with one embodiment disclosed herein as the.

[0031] 图6Α和6Β是显示如中和阶段的常规工艺中使用的典型液体和材料水平等的消化器的横断面图。 Cross-sectional view [0031] FIG 6Α and 6Β is a typical level of liquid and material as used in conventional processes and phases in the digester.

[0032] 图7A、7B和7C是根据如本文所公开的一个实施方式,显示中和阶段期间液体和材料混合物和水平等的消化器的横断面图。 [0032] Figures 7A, 7B and 7C are in accordance with one embodiment as disclosed herein, the liquid phase and in the display period and a mixture of materials and level of cross-sectional view of the digester.

[0033] 图8和9是根据如本文所公开的一个实施方式,显示热的黑色填充和最后的液体置换期间液体和材料混合物和水平等的消化器的横断面图。 [0033] FIGS. 8 and 9 according to an embodiment as disclosed herein, cross-sectional view of the digester during the Show black fill and the last hot liquid and liquid replacement material mixture level and the like.

[0034] 图10是根据如本文所公开的一个或多个实施方式,如可用于冷碱提取制浆工艺的优选蒸煮工艺的工艺流程图。 [0034] FIG. 10 is according to one or more embodiments as disclosed herein, can be used preferably as a process flow diagram of the cooking process of the cold caustic extraction pulping process.

[0035] 图11是总体根据图10的工艺流程,显示在实验台(实验室)规模消化器和工艺条件中用于计算和记录液体体积"进"和"出"的数据表的图。 [0035] FIG. 11 is an overall process flow of FIG. 10, showing the volume of liquid used to calculate and record in the experiment table (Lab) scale digester process conditions and "in" and "out" of the data table.

[0036] 图12是结合图11的工艺,绘制多种样品中中和液(neutralisate)的pH和有效碱浓度的图。 [0036] FIG. 12 is a bonding process in FIG. 11, drawing more samples of effective alkali concentrations and pH FIGS neutralizing solution (neutralisate) a.

[0037] 图13A和13B是总结根据工艺的多种实施例的多种工艺条件和结果的图。 [0037] FIGS. 13A and 13B are summed according to various embodiments of the process of FIG variety of process conditions and results of the embodiment.

[0038] 图14是根据如本文所公开的一个实施方式的工艺的S18对卡伯值的图。 [0038] FIG. 14 is an embodiment of a process as herein disclosed S18 versus Kappa Number.

[0039] 优选实施方式的详细描述 [0039] Detailed description of the preferred embodiment

[0040] 根据一个或多个实施方式,结合牛皮纸浆制法使用的浆加工的方法和系统包括将第一苛性碱溶液,如烧碱液与一定量的木材或其它含有生浆的有机材料在适当的罐或反应容器(即,消化器)中结合,在合适的温度,例如,140和180°C之间煮以产生粗浆。 [0040] According to one or more embodiments, a method and system for processing pulp Kraft method using a binding comprises a first caustic solution, such as caustic soda solution with an amount of slurry containing raw wood or other organic material in a suitable the tank or reactor vessel (i.e., the digester) binding, at a suitable temperature, e.g., boiling between 140 and 180 ° C to produce a crude pulp. 粗浆的清洗和筛选导致半纯化的浆以及被投回到消化器的衍生物(如黑液)。 Brownstock washing and screening the pulp and result in semi-purified derivative (e.g. black liquor) are administered back to the digester. 半纯化的浆可用另一苛性碱溶液(其可再次是烧碱液)在合适的温度,例如,50°C以下提取以产生纯化的浆。 Another semi-purified pulp available caustic solution (which may be re-caustic) at a suitable temperature, e.g., 50 ° C or less to produce a purified extract of the pulp. 通过另外的清洗,含有半纤维素的溶液可从纯化的浆中分离,导致另一冷碱抽提(CCE)碱性滤液形式的苛性碱溶液,其可单独收集和存储。 , A solution containing hemicellulose may be separated by additional washing from the purified slurry, resulting in a further cold caustic extraction (CCE) alkaline filtrate caustic solution form, which can be collected and stored separately. 该CCE碱性滤液可通过,例如,蒸发或其它手段浓缩,并独自使用或与消化器中的第一苛性碱溶液组合使用以处理有机材料和重新启动循环。 The CCE alkaline filtrate by, e.g., evaporation or other means concentrated, and used alone or in a combination of the first solution with a caustic digester used to treat organic material and the cycle is restarted. 在其它实施方式中,显著部分的CCE碱性滤液返回到消化器,但不经历浓缩。 In other embodiments, a significant portion of CCEs alkaline filtrate is returned to the digester, but not subjected concentrated.

[0041] 根据一个或多个实施方式的方面,作为蒸煮阶段的部分,将木肩或其它含浆有机物与苛性碱溶液在反应容器中反应。 [0041] According to aspects of one or more embodiments, as part of the cooking stage, the shoulder or other wood pulp-containing organic compounds with a caustic solution in a reaction vessel. 蒸煮阶段优选包括将木肩或其它有机含浆材料投入消化器或相似的反应容器,进行预水解,用烧碱液和CCE碱性滤液一一任选地用烧碱液提浓一一中和混合物,用热黑液和CCE碱性滤液(任一或二者优选用烧碱液提浓)填充消化器,和以有效造成去本质作用的时间进行蒸煮。 Digestion stage preferably includes a shoulder or other wood pulp-containing organic material into the digester or similar reaction vessel, pre-hydrolysis, optionally eleven eleven and concentrate the mixture with caustic soda and filtrate was CCE alkaline solution, with hot black liquor and CCE alkaline filtrate (either or both preferably with caustic soda solution concentrate) filling the digester, and the nature of time effective to cause action is cooked. 这些步骤之后可以是冷置换和浆排出。 These steps may be cold plasma discharged and replaced.

[0042] 排出的浆混合物通常含有释放的纤维质纤维。 [0042] The slurry mixture discharged generally contain the released cellulosic fibers. 可将这些纤维进一步用另一种苛性碱溶液提取以溶解半纤维素。 These fibers may be further extracted with another caustic solution to dissolve hemicellulose. 可将用过的苛性碱溶液和溶解的半纤维素与提取的浆分离, 并将浆进行进一步清洗,去除残留的苛性碱溶液和半纤维素。 May be spent caustic solution and dissolved hemicellulose extracted pulp was separated, and the slurry is further washed to remove residual caustic solution and hemicellulose. 将含有半纤维素的洗液和用过的苛性碱溶液混合和任选地浓缩,形成浓缩的CCE滤液。 The mixed bath containing caustic solution and hemicellulose optionally concentrated and used to form a CCE filtrate was concentrated. 然后浓缩的或未浓缩的CCE滤液一一可以是这样的情况一一可单独使用或与另一苛性碱溶液组合使用以在反应容器中处理木材。 Then concentrated or non-concentrated CCE filtrate eleven eleven may be the case that another solution may be used alone or in combination with the caustic used to treat wood in a reaction vessel.

[0043] 以这种方式,清洗和清洁步骤中产生的潜在的全部量的碱性滤液可返回并用作预水解牛皮纸(PHK)蒸煮工艺中的碱源,由此有助于防止半纤维素沉积和提高高α溶解浆的纯度。 [0043] In this manner, the potential total amount of the alkaline filtrate washing and cleaning step can be returned and used to generate pre-hydrolyzed kraft paper (the PHK) alkali source in the cooking process, thereby helping to prevent the deposition of hemicellulose and improve high-purity α dissolving pulp. 上面概括描述的全部步骤可用传统设备进行。 All of the steps generally described above using conventional equipment.

[0044] 为了比较的目的,图2和3显示根据图1中显示的普通的制浆技术的先前存在的工艺的某些相关方面。 [0044] For comparison purposes, Figures 2 and 3 show some relevant aspects of the process according to the pre-existing conventional pulping technique is shown in Figure 1. 图2中显示的是先前存在的用于清洗和清洁浆的系统和相关工艺, 图3显示的是先前存在的用于蒸煮的系统和相关工艺,全部可用于预水解牛皮纸制浆工艺。 Figure 2 shows a pre-existing pulp for washing and cleaning systems and related processes, FIG. 3 shows the pre-existing system for cooking and related processes, it may be used for all prehydrolysis kraft pulping process. 首先参考图2,用于清洗和清洁纸浆的系统200和相关工艺包括将来自粗浆清洗和筛选(即,图1中的阶段122)的纯化的浆232,连同被冷却的烧碱液215、CCE碱性滤液226或可能地其它液体或溶液的混合物--其可暂时储存在一个或多个混合罐271、272中,通过合适的运输工具运输到CCE反应器210 (即,图1中的阶段123)。 Referring first to Figure 2, a system 200 and related processes including washing and cleaning the pulp from the brownstock washing and screening (i.e., stage 122 in FIG. 1) of the purified slurry 232, together with the cooled caustic 215, CCE other liquid mixture or solution of the alkaline filtrate or possibly 226 - which may be temporarily stored in one or more mixing tanks 271, 272, CCE transported to reactor 210 by a suitable means of transport (i.e., stage 1 in FIG. 123). 可将浆混合物233从CCE反应器210提供给一组双辑挤衆机(twin roll press)单元251-254--其可用作纸衆的清洗和清洁的部分。 Pulp mixture 233 may be extruded all of its washing and cleaning machine 251-254-- portion of the paper may be used as congregation CCE reactor 210 is supplied to a set of two series from (twin roll press) unit. 使用双辊挤浆机单元251-254处理之后,然后可将处理的纸浆260进一步用硫酸(H2S04) 261和/或其它液体处理或与之混合并向下游通过漂白工艺。 After a two-roll process squeezer units 251-254, and 260 can be further treated pulp with sulfuric acid (H2S04), and / or other liquid to the downstream treatment or mixed by a bleaching process 261. 结合清洗工艺,可将从双辊挤浆机单元251-254提取的CCE碱性滤液216收集和用于多种目的,包括向上游返回和再循环,用于蒸煮阶段。 Binding cleaning process, twin roll may be squeezed from the pulp CCE alkaline filtrate extraction unit 216 251-254 collected and used for various purposes, including the return to the upstream and recycling, for the cooking stage.

[0045] 如先前所提到的,通常将部分CCE碱性滤液216-一通常远小于一半一一放出到回收区或另外移去。 [0045] As mentioned previously, typically a part of CCE alkaline filtrate 216- typically much less than half of the recovery zone to eleven discharged or otherwise removed.

[0046] 图3显示如常规已知的用于蒸煮的系统300和相关工艺,其中可任选地使用CCE 碱性滤液。 [0046] FIG. 3 shows a system 300 and related processes conventionally known, such as for cooking, which may optionally be used CCE alkaline filtrate. 在图3中,可将一个或多个消化器310a、310b进料木肩或其它含有纤维素的有机材料,并且它们是蒸煮工艺中使用的基本反应容器。 In Figure 3, it may be one or more digesters 310a, 310b feed timber shoulder or other cellulose containing organic material, and they are substantially the reaction vessel used in the cooking process. 系统300还包括烧碱液罐320、置换液体罐330和一个或多个热黑液积累罐340a、340b。 The system 300 also includes caustic soda tank 320, the replacement liquid tank 330 and the one or more accumulation of the hot black liquor tank 340a, 340b. 可将来自外源的烧碱液319栗入烧碱液罐320,它可从其中获取和在消化器310a、310b中用作中和液体322。 The caustic may be from an external source 319 into the caustic Li tank 320, which can be obtained in the digester and 310a, 310b and used as the liquid 322 therethrough. 置换液体灌330装着溶液,该溶液可包括稀释的黑液或包括黑液的混合物一一其例如作为来自粗浆清洗阶段的副广品可被获得,如向内的箭头325所指不的。 Replacement liquid 330 filled with irrigation solution, the solution may comprise a diluted black liquor or a mixture of eleven black liquor which is obtained, for example, as a by-product can be wide from the brownstock washing stage, indicated as 325 is not inwardly of the arrows.

[0047] 可将烧碱液319或CCE滤液316通过几个换热器栗送到与烧碱液罐320连接的栗的吸取侧。 [0047] 319 may be caustic or several CCE filtrate 316 through the heat exchanger to Li Li caustic liquid tank is connected to the suction side 320. 另一个栗将用于中和阶段的烧碱液或CCE滤液送到与置换液体灌330连接的栗的排出侧。 Another caustic soda solution or Li for CCE filtrate and phase displacement liquid to the discharge side of the filling connection 330 Li. 在热黑液填充期间,将来自热黑液积累罐340a的液体通过煮液管道324栗送通过换热器353并最后到达消化器310a、310b。 Black liquor during the hot filling, the accumulation of hot black liquor tank 340a of the liquid from the cooking liquor conduit 324 by Li and sent through the heat exchanger 353 and finally reaches the digesters 310a, 310b. 热黑液填充之后,通过与热黑液填充相同的栗和相同的路线进行烧碱液(while liquor)填充(或CCE滤液)。 After the hot black liquor fill, a caustic (while liquor) is filled (or CCE filtrate) by the same hot black liquor fill the same route and Li. 当蒸煮完成时,将置换液体327a、327b投入消化器310a、310b并用于蒸煮阶段的末端。 When the cooking is completed, the replacement liquid 327a, 327b into the digester 310a, 310b and to the end of the cooking stage. 将置换的最热的部分送到第一热黑液积累罐340a以用于下一个蒸煮,并将较冷却的部分送到第二热黑液积累罐340b。 The hottest part of the permutation to the first hot black liquor tank 340a accumulation for the next cooking, and to accumulate a second hot black liquor tank portion 340b than cooling. 将液体从第二热黑液积累罐340b通过换热器和液体滤器送到蒸发车间,并且从那里送到回收锅炉,将有机物在回收锅炉燃烧以产生蒸汽,同时回收无机物。 The accumulated liquid from the second tank 340b to the hot black liquor through the heat exchanger and the liquid filter evaporation plant, and from there to the recovery boiler, the combustion of organic compounds in the recovery boiler to generate steam, while recovering inorganic material.

[0048] -般而言,当不在产生高纯度浆时,可不需要冷碱提取阶段并可将烧碱液直接投入消化器310a、310b。 [0048] - In general, when pulp is not to produce high purity, cold alkali extraction stage may not be required and may directly into caustic digester 310a, 310b. 当利用冷碱提取时,通常将CCE滤液栗回到消化器310a、310b。 When using cold alkaline extraction, typically CCE filtrate was returned to the digester Li 310a, 310b.

[0049] 在典型的蒸煮工艺中,用木肩或相似的有机材料填充消化器310a、310b,然后进行预水解工艺。 [0049] In a typical cooking process, the digester is filled 310a, 310b with the shoulders of wood or similar organic material, and then pre-hydrolysis process. 预水解之后,将中和液体322提供给消化器310a、310b,该中和液体然后连续由适当的煮液置换。 After pre-hydrolysis, and liquid in the digester 322 to 310a, 310b, and the liquid was then replaced by a suitable continuous cooking liquor. 然后将消化器310a、310b的温度升高到蒸煮温度,在蒸煮温度将它们保持足够的时期用于进行去木质作用。 The temperature was then digester 310a, 310b is raised to a cooking temperature, holding them at the cooking temperature for a sufficient period of delignification. 当蒸煮完成时,将每个消化器310a、310b中的通风阀打开,然后将来自消化器的去木质的浆排出到泄料桶(blowtank)(未显示)中。 When the cooking is completed, each of the digesters 310a, 310b of the vent valve open, and then discharged to the wood pulp from the digester to the blow tanks (blowtank) (not shown). 向着蒸煮循环的末端,将消化器保持加压同时引入置换液体以置换热黑液或用过的液体一一其从消化器310a、310b释放出同时仍然大致在用于蒸煮的温度。 Towards the end of the cooking cycle the digester while maintaining a pressurized displacement liquid is introduced to displace the hot black liquor or spent liquor which eleven 310a, 310b while still being released from the digester at a cooking temperature substantially. 在典型的工艺中,置换液体构成从清洗粗浆获得的滤液。 In a typical process, the liquid constituting the displacement filtrate obtained from the washing brownstock. 将置换的热黑液收集在一个或多个高温积累罐340a、340b用于随后的再使用。 The replaced hot black liquor collected in one or more high temperature accumulation tanks 340a, 340b for subsequent reuse. 置换工艺之后,可将置换液体和剩余的用过的黑液一一其比正常的蒸煮温度冷一一任选地还存储在低温积累罐中并送到回收区。 After the replacement process, and it can be replaced with the liquid remaining spent liquor which eleven than normal cooking temperatures cold eleven optionally also be stored in cryogenic accumulation tank and to the recovery zone. 最后排泄消化器310a、310b以去除去木质的浆。 Finally excretion digester 310a, 310b in order to remove the pulp wood.

[0050] 图4是根据如本文公开的一个实施方式的浆生产工艺的工艺400的总的工艺流程图,其中蒸煮工艺相对于传统技术被改良。 [0050] FIG. 4 is a process flow diagram according to total pulp production process embodiment of a process 400 disclosed herein, wherein the cooking process is improved with respect to conventional techniques. 图4中的工艺400由蒸煮阶段421开始,在该阶段中,通常与传统的牛皮纸浆制法相似,将木肩或其它含浆有机材料418投入到能抵抗高压的消化器中。 The process of FIG. 4 400 421 starting from the cooking stage, in this stage, generally similar to a conventional Kraft method, shoulder or other wood pulp-containing organic material 418 can resist high pressure into the digester. 消化器可具有任何合适的容积如,例如,大约360立方米。 The digester may have any suitable volume, such as, for example, approximately 360 cubic meters. 木材类型或其它植物或有机材料的具体选择可取决于期望的最终产品。 The particular choice of the type of wood or other plant or organic material may depend on the desired final product. 例如,软木材如松树、冷杉和云杉可用于一些衍生工艺以获得具有高粘度的产品,如纤维素醚(其可用作,例如,食品、涂料、油回收液体或泥浆、纸、化妆品、药物、粘合剂、印刷、农业、陶瓷制品、纺织品、洗涤剂和建筑材料中的添加剂)。 For example, a soft wood such as pine, fir and spruce can be used for some process to obtain a derivatized product having a high viscosity, such as cellulose ethers (which can be used, e.g., food, paint, liquid or slurry oil recovery, paper, cosmetics, pharmaceutical, adhesives, printing, agriculture, ceramics, textiles, detergents and additives in building materials). 硬木材,如桉树和金合欢对不需要具有非常高的粘度的浆的那些应用可能是优选的。 Hardwood, such as eucalyptus and acacia those applications need not have a very high slurry viscosity may be preferred.

[0051] 在一个实施方式中,和如下面进一步详细描述的,在蒸煮阶段421的预水解部分期间用蒸汽或其它适当方法将消化器加热到第一预定温度。 [0051] In one embodiment, and as described in further detail below, the cooking phase with steam or other suitable means to the digester is heated to a predetermined temperature during a first portion 421 of the prehydrolysis. 该预定温度可以是110至130°C,更具体地,例如,可以是大约120°C。 The predetermined temperature may be 110 to 130 ° C, more specifically, for example, it may be about 120 ° C. 在该具体实例中的加热在15至60分钟之间的时期(例如,30分钟)里完成,尽管根据设备的个别情况和正被加热的有机材料的性质可使用其它的加热时间。 (E.g., 30 minutes) in heating is accomplished in this particular example, a period between 15 to 60 minutes, although other time depending on the properties of the heating device and the individual circumstances being heated organic materials.

[0052] 优选然后用蒸汽或其它方法将消化器进一步加热到高于第一预定温度的第二温度,用于预水解阶段。 [0052] Preferably then steam digester or other means further heated to a second temperature higher than the first predetermined temperature for prehydrolysis stage. 该第二预水解温度优选是165°C左右,虽然再一次地精确的温度可取决于包括设备和有机材料在内的许多变量。 The second pre-hydrolysis temperature is preferably about 165 ° C, although once again the exact temperature may depend on a number of variables including equipment and materials including organic. 用于预水解的加热可以在30至120分钟(例如,60分钟)的时期里完成,尽管再一次地加热时间可如需要改变。 Heating for pre-hydrolysis may be (e.g., 60 minutes) was done in a period of 30 to 120 minutes, although the heating time may once again need to be changed such. 一旦达到预水解温度, 就将消化器保持在该温度持续合适的时期,例如,35至45分钟,或足以完成预水解的任何其它时间。 Once the prehydrolysis temperature is reached, it will be held at any other time the temperature of the digester for a suitable period of time, e.g., 35-45 minutes, or sufficient to complete the pre-hydrolysis.

[0053] 在优选实施方式中,将中和溶液加入到作为蒸煮阶段421部分的消化器。 [0053] In a preferred embodiment, the neutralized solution was added to the cooking stage as part of the digester 421. 中和溶液可由烧碱液411、碱性滤液417或其混合物组成。 And the caustic solution can be 411, 417 or mixtures thereof of the alkaline filtrate. 烧碱液可采取这样的形式,例如,氢氧化钠和硫化钠的混合物。 Caustic may take the form of, for example, a mixture of sodium hydroxide and sodium sulphide. 在优选实施方式中,烧碱液具有每升85至150克有效碱如氢氧化钠(NaOH),更优选每升95至125克NaOH有效碱,最优选每升100至110克NaOH有效碱。 In a preferred embodiment, the caustic soda solution having from 85 to 150 grams per liter of effective alkali such as sodium hydroxide (NaOH), more preferably from 95 to 125 grams per liter of effective alkali NaOH, and most preferably from 100 to 110 grams per liter of effective alkali NaOH. 烧碱液的硫化度可以是10%和40%之间,优选15和35%之间,最优选20和30%之间。 Vulcanization of the caustic may be between 10% and 40%, preferably between 15 and 35%, most preferably between 20 and 30%.

[0054] 在用烧碱液提浓之前用于热的液体填充的黑液435中有效的NaOH浓度可以是每升15至35克,并且优选是每升20至30克,或在用烧碱液提浓之后碱性滤液417中有效的NaOH浓度可以是每升35至75克,并且优选是每升40至50克,虽然它可根据具体工艺而改变。 [0054] In the liquid prior to hot caustic concentrate black liquor 435 is filled with valid NaOH concentration may be 15 to 35 grams per liter, and preferably from 20 to 30 grams per liter, or caustic soda solution mentioned after the filtrate was concentrated alkaline effective NaOH concentration 417 may be 35 to 75 grams per liter, and preferably from 40 to 50 grams per liter, although it may vary depending on the particular process.

[0055] 可将中和溶液一次性加入到消化器中或可分几部分加入到消化器中。 [0055] The neutralizing solution may be added in one portion to a digester or separable parts added to the digester. 在一个实施方式中,将由烧碱液和碱性滤液组成的中和溶液分两部分加入,借此首先将烧碱液作为烧碱液垫(pad)461提供给消化器,之后加入CCE碱性滤液417。 In one embodiment, the alkaline filtrate by the caustic and the solution consisting of two parts and added, whereby the first caustic soda solution as the pad (pad) 461 provided to the digester, after the addition of 417 CCE alkaline filtrate. 在一个实施方式中,中和溶液在120至160°C之间,更优选140至150°C之间的温度加入。 In one embodiment, the neutralizing solution between 120 and 160 ° C, a temperature between more preferably 140 to 150 ° C was added. 烧碱液可包括中和步骤中20% 和40%之间的总的有效碱载量,更优选可包括中和中25%和30%之间的总的有效碱载量。 Caustic alkali may include the total loading of between 20% and 40% of the step, and more preferably may include the total base loading of between 25% and 30% of the sum.

[0056] 然后煮液可替换消化器中的中和液和用于在消化器中蒸煮木材。 [0056] Alternatively and cooking liquor in the digester and cooking liquid and the timber for the digester. 煮液可分几部分加入消化器。 Cooking liquor is added to the digester can be divided into several parts. 在一个实施方式中,将包括热黑液和烧碱液或CCE碱性滤液的煮液分两部分加入。 In one embodiment, the caustic soda and the hot black liquor comprising a solution or CCE alkaline cooking liquor filtrate was added in two portions. 黑液、烧碱液和CCE滤液溶液中氢氧化钠和硫化钠的范围和优选范围可与中和时期的相同。 Black liquor, ranges and preferred ranges and CCE filtrate caustic solution of sodium hydroxide and sodium sulfide and may be the same as in the period.

[0057] 在一个或多个实施方式中,煮液包括以下成分中的一种或两种:(i)具有每升15 至35克有效碱浓度如NaOH的黑液435,任选地用加入量的具有每升95至125克有效碱浓度如NaOH的烧碱液462增强以达到每升40至50克的有效碱浓度NaOH或另外用加入量的再循环的CCE滤液417(任选地浓缩以增加碱水平或用烧碱液提浓)增强;和(ii)来自下游的冷碱提取清洗阶段424的CCE碱性滤液417,具有每升55至75克的有效碱浓度如NaOH, 用加入的烧碱液463提浓或增强之后,任选地通过蒸发或其它相似的方法浓缩。 [0057] In one or more embodiments, the cooking liquor comprises the following components in one or both of: (i) has an effective alkali concentration of 15 to 35 grams per liter of the black liquor 435, such as NaOH, optionally with the addition effective amount of a base concentration from 95 to 125 grams per liter of caustic, such as NaOH 462 enhanced to 40 to 50 grams per liter of effective alkali concentration of NaOH or otherwise recycled with the filtrate CCE is added in an amount (optionally concentrating 417 increasing the level of base or concentrate with a caustic soda solution) enhancement; and (ii) downstream from the cold caustic extraction stage washing of the alkaline filtrate CCE 424 417, it has an effective alkali concentration of 55 to 75 grams per liter, such as NaOH, with the addition of caustic soda after the concentrate was 463 or enhanced, optionally concentrated by evaporation or other similar methods.

[0058] 可用蒸汽或其它方法将消化器加热到蒸煮温度。 [0058] steam or other methods can be used to heat the digester to the cooking temperature. 蒸煮温度可以是140和180°C之间,优选145至160°C之间。 Cooking temperature can be between 140 and 180 ° C, preferably between 145 to between 160 ° C. 加热可以是在10至30分钟的时期或其它合适的时期里。 The heating may be from 10 to 30 minutes or other suitable time period in. 将消化器在蒸煮温度保持合适的时期,用于蒸煮工艺,如15至120分钟之间。 The cooking temperature of the digester is maintained at an appropriate time, for the cooking process, such as between 15 and 120 minutes. 针对目标Η因子选择温度范围和蒸煮时间,其优选在130和250之间。 Cooking time and temperature selection range for the target Η factor, which is preferably between 130 and 250.

[0059] 作为蒸煮阶段421的结果,产生粗浆412。 [0059] As a result of the cooking stage 421, 412 to produce crude pulp. 将粗浆412提供到清洗和筛选工艺422, 与传统的牛皮纸程序相似,于是通过利用不同类型的滤网或筛子和离心净化来筛选粗浆412。 The crude slurry 412 is supplied to the cleaning and screening process 422, similar to the conventional kraft process then screened brownstock 412 by using a different type of screen or sieve and centrifugal cleaning. 然后在筛选和清洗工艺422中用洗涤机清洗粗浆412。 Then washed brownstock screening 412 and 422 with the cleaning process the washing machine. 洗涤机可以是任何商业类型, 包括水平带式洗涤机、滚筒式洗涤机、真空过滤机、洗涤式压滤机(washpresses)、压实挡板过滤器(compaction baffle filters)、大气洗料器(atmosphericdiffusers)和压力洗料器。 Commercial washing machine may be any type, comprising a horizontal belt-type washing machines, drum type washing machines, vacuum filter, filter press and washed (washpresses), compaction baffle filter (compaction baffle filters), washed atmospheric feeder ( atmosphericdiffusers) and pressure wash the feeder. 清洗装置可在各阶段之间使用逆流流动以便浆以相反的方向移动到洗涤水。 Cleaning apparatus may be used between the stages countercurrent flow to the slurry in an opposite direction to the wash water. 在一个实施方式中,加压的水用于洗粗浆412。 In one embodiment, the pressurized water is used for washing brownstock 412. 在另一个实施方式中,稀释的苛性碱溶液用于洗粗浆412。 In a further embodiment, the dilute caustic solution for washing brownstock 412. 稀释的苛性碱溶液可,例如,具有小于每升5克NaOH,更优选小于每升1克NaOH的有效碱浓度。 The dilute caustic solution may be, e.g., less than 5 g NaOH per liter, more preferably less than 1 gram per liter of effective alkali concentration of NaOH. 收集用过的洗液并在工艺400中别处用作黑液413。 Collecting spent wash and elsewhere in the process as black liquor 400 413. 在一个实施方式中,黑液413用作在蒸煮阶段421结束时提供给消化器的部分置换液体。 In one embodiment, the black liquor to the digester section 413 provided as the liquid is replaced at the end of the cooking stage 421.

[0060] 然后将来自清洗和筛选工艺422的半纯化的浆作为浆体栗送到在冷碱提取("CCE")阶段423中利用的反应器,再次与传统的方法相似,其中将半纯化的浆与第二苛性碱溶液414(其可与第一苛性碱溶液411相同或不同)混合以实现半纤维素与期望的纤维质纤维的进一步分离。 [0060] and then washed from the pulp screening process 422 semi-purified as a slurry in the reactor to Li 423 using cold alkaline extraction ( "CCE") stage, again similar to the conventional method in which the semipurified the second slurry further separated caustic solution 414 (which may be the first caustic solution the same or different 411) were mixed to achieve the desired hemicellulose and cellulosic fibers. 冷碱提取是本领域熟知的工艺。 Cold caustic extraction process is known in the art. 冷碱处理工艺和系统的实例被更详细地描述,例如,在Ali等人的美国专利申请公开号2004/0020854和Svenson等人的美国专利申请公开号2005/0203291中,二者在此通过引用被并入,如同在本文完全阐述。 Examples of cold alkali treatment process and system are described in more detail, e.g., Ali et al., In U.S. Patent Application Publication No. 2004/0020854 and Svenson et al., U.S. Patent Application Publication No. 2005/0203291, both of which are incorporated by reference It is incorporated as if fully set forth herein.

[0061] CCE提取工艺423中的混合和提取程序中使用的苛性碱溶液414可包括新鲜制备的氢氧化钠溶液、来自下游工艺的回收、或浆或造纸操作中的副产品,例如,浓缩的CCE滤液、烧碱液和类似物。 [0061] CCE mixing caustic solution extraction and extraction program 423 in the process 414 may include using freshly prepared sodium hydroxide solution is recovered from the downstream processes, or pulp or paper-product operations, e.g., a CCE concentrated The filtrate, caustic, and the like. 还可利用其它的碱性溶液,如氢氧化铵和氢氧化钾。 Other basic solutions may also be utilized, such as ammonium hydroxide and potassium hydroxide. 冷的碱提取可用另外的加入的化学药品如过氧化氢、次氯酸钠、硼氢化钠和表面活性剂进行。 Cold alkaline extraction chemicals added as an additional available hydrogen peroxide, sodium hypochlorite, sodium borohydride, and a surfactant.

[0062] 期望的停留时间之后,将浆在下面的清洗工艺424中与用过的冷苛性碱溶液分离。 After a residence time [0062] desired, the slurry 424 in the following cleaning process with the cold spent caustic solution was separated. 用过的冷苛性碱溶液含有提取的半纤维素。 Cold spent caustic solution containing the extracted hemicellulose. 浆在CCE清洗装置中清洗。 CCE cleaning slurry cleaning apparatus. 示例性的洗涤机包括水平带式洗涤机、滚筒式洗涤机、真空过滤机、洗涤式压滤机、压实挡板过滤器、大气洗料器和压力洗料器。 Exemplary washing machine comprises a horizontal belt-type washing machines, drum type washing machines, vacuum filter, washed with filter press, compaction baffle filter, wash atmospheric pressure feeder and feeder wash. 洗液可包括,例如,纯水或具有有效碱浓度,例如,每升1克以下NaOH 的稀释的苛性碱溶液。 Lotion may comprise, for example, water or an effective alkali concentration, e.g., below 1 gram per liter of dilute NaOH caustic solution. 以传统的方式收集用过的洗液并与用过的冷苛性碱溶液混合以形成另一种苛性碱溶液416,该苛性碱溶液416, 一方面,包括由清洗工艺424产生的碱性滤液。 Collected in a conventional manner and mixed with the spent wash of the spent caustic solution to form a cold another 416 caustic solution, the caustic solution 416, on the one hand, including alkaline filtrate resulting from the cleaning process 424. 其间,将提取和清洗的浆433输送到下一阶段用于漂白。 Meanwhile, washing the extracted pulp and conveyed to the next stage 433 for bleaching.

[0063] 可将CCE碱性滤液416全部或部分地提供到浓缩工艺,并可,例如,投到蒸发系统用于浓缩,虽然在其它实施方式中CCE碱性滤液416不经历浓缩工艺。 [0063] CCE alkaline filtrate 416 may be fully or partially supplied to the concentration process, and may be, for example, put into the evaporation system for concentrating, although CCE alkaline filtrate 416 in other embodiments is not subjected to a concentration process. 通常的蒸发系统可含有几个连续安装的装置或效应器(effect)。 Conventional evaporation system may contain several means or effector (Effect) continuously installed. 液体通过每个效应器移动并在效应器的出口变得更浓。 Each movement of the liquid through and becomes more concentrated in the effector outlet effector. 可利用真空来促进溶液的蒸发和浓缩。 It may promote evaporation of the solution and concentrated by vacuum. 与浓缩工艺连接,可通过,例如,使用一个或多个连续排列的效应器的蒸发,将淡(弱)的黑液浓缩成浓(强)的黑液,在工艺期间逐渐增加淡的黑液的浓度。 And process connections concentrated by, for example, using one or more effector continuously arranged evaporated, light (low) black liquor is concentrated to a concentrated (stronger) black liquor, the light is gradually increased during the process the black liquor concentration. 可将浓的黑液储存在积累罐中并用于产生蒸汽和动力的回收锅炉, 因此通过再使用或再循环输出副产品而增加效率。 The concentrated black liquor may be stored in the accumulation tank and the recovery boiler for generating steam and power, so reuse or recycling by-products to increase output efficiency. 浓缩CCE碱性滤液用于在蒸煮阶段中再使用的一个技术在同此同时提交的名称为"在碱性滤液再使用下使用冷碱提取的的浆加工方法和系统(Method and System forPulp Processing Using Cold Caustic Extraction with Alkaline Filtrate Reuse)"的共同未决美国专利申请系列号12/789, 265(律师案卷号161551-0002)中被描述,该申请被转让给本发明的受让人,并在此通过引用被并入,如同在本文被完全示出。 CCE alkaline filtrate was concentrated for re-use in a technique for cooking stage "processing methods and systems used slurry (Method and System forPulp Processing Using cold caustic extraction under basic filtrate was used in the concurrently filed herewith Name Cold Caustic Extraction with Alkaline Filtrate Reuse) "co-pending US Patent application Serial No. 12/789, 265 (attorney Docket No. 161551-0002) is described, which is assigned to the assignee of the present invention, and in this incorporated by reference, as if fully illustrated herein.

[0064] 浓缩的碱性滤液溶液417可在蒸煮阶段421中作为中和液的部分和/或作为煮液的部分,全部或部分再使用。 [0064] The filtrate was concentrated alkaline solution and 417 parts of liquid and / or as part of the cooking liquor, in whole or in part reused as the cooking stage 421. 如早先所提到的,CCE碱性滤液416可与烧碱液463组合,用作煮液的部分。 As mentioned earlier, 416 can be of CCEs alkaline filtrate 463 combined with liquid caustic soda, is used as cooking liquor portion. 在某些实施方式中,可使用浓缩的CCE碱性滤液溶液417而无需从烧碱液提浓。 In certain embodiments, the use of the alkaline filtrate was concentrated CCE 417 without the caustic concentrate.

[0065] 不在蒸煮阶段421中再使用的浓缩的碱性滤液溶液417可用于其它目的。 [0065] The filtrate solution was concentrated alkaline cooking stage 421 is not reused 417 may be used for other purposes. 例如, 它可任选地被转换用于其它目的,如邻近的生产线上使用(如烧碱液)。 For example, it may optionally be converted for other purposes, such as adjacent a production line used (e.g. caustic soda solution). 浓缩的碱性滤液溶液417还可允许在蒸煮阶段421中使用较高的液体浓度,因此防止纤维上半纤维素的再沉积。 The filtrate was concentrated alkaline solution 417 may also allow the use of higher concentrations of the liquid in the cooking stage 421, thus preventing redeposition on the fiber hemicellulose.

[0066] 图5是根据如本文所公开的一个实施方式用于与浆生产工艺结合使用的蒸煮阶段的系统500和相关工艺的图。 [0066] FIG. 5 is a diagram for use in conjunction with the cooking stage pulp production process and related system 500 according to one embodiment of the process as disclosed herein. 在图5中,与传统的工艺相似,将木肩或其它含浆有机材料投入一个或多个消化器510 (在该实例中,八个消化器),并且该一个或多个消化器510充当在蒸煮工艺中使用的基本反应容器。 In Figure 5, similar to the conventional process, the shoulders or other wood pulp-containing organic material into a digester 510 or more (in this example, eight digester), and which act as one or more digesters 510 the basic reaction vessel used in the cooking process. 系统500还包括烧碱液/CCE滤液存储罐520、置换液体灌530、一个或多个热黑液积累罐540a、540b和一个或多个泄料桶560。 The system 500 further includes a caustic / CCE filtrate storage tank 520, 530 replacing the liquid filling, the one or more accumulation of the hot black liquor tank 540a, 540b, and one or more blow tanks 560. 可将合适来源的烧碱液519通过液体加热器551、552加热和栗入烧碱液/CCE滤液存储罐520,在那里可将它再循环和储存用于后面的使用,并可从它吸取和用作消化器510中的中和液522。 The caustic may be suitable source 519 through the heater 551, 552 and the liquid into the caustic Li / CCE filtrate storage tank 520, where it can be recycled and stored for later use, and as can be drawn from it and the liquid 522 in the digester 510. 同样可将CCE滤液516加热和栗入烧碱液/CCE滤液存储罐520用于后面的使用。 Similarly CCE filtrate 516 may be heated into the liquid caustic soda and Li / CCE filtrate storage tank 520 for later use. 置换液体灌530装着溶液,该溶液可包括稀释的黑液或包括黑液的混合物一一其可以是,例如,来自清洗阶段424的副产品,如向内的箭头525所指示的。 Replacement liquid 530 filled with irrigation solution, the solution may comprise a diluted black liquor or a mixture of eleven black liquor which may be, for example, by-products from the cleaning stage 424, inwardly as indicated by arrows 525.

[0067] 在蒸煮工艺结束时,将来自置换液体灌530的冷液体(75_85°C )送到消化器510 以结束蒸煮反应。 [0067] At the end of the cooking process, from a cold liquid filling the liquid displacement 530 (75_85 ° C) 510 to the digester to terminate the cooking reactions. 从消化器510置换的第一部分液体是相对热的(140-160°C)并将其送到第一热黑液积累罐540a用于接下来的蒸煮。 The first portion of the liquid displaced from the digester 510 is relatively hot (140-160 ° C) and to accumulate a first hot black liquor tank 540a for subsequent cooking. 接下来从消化器510置换的较冷的液体是较凉的(约120-140°C)并将其送到第二热黑液积累罐540b。 Next, the colder liquid from the digester 510 is replaced with cooler (about 120-140 ° C) and hot black liquor to a second accumulation tank 540b. 将热黑液536从第二热黑液积累罐540b通过换热器栗到液体滤器570。 The hot black liquor 536 Li filter 570 from the second liquid into the hot black liquor through the heat accumulation tank 540b. 将黑液冷却同时它的热量用于加热通过换热器55U552循环的烧碱液或CCE滤液。 The black liquor is cooled while its caustic soda solution or is used to heat through the heat exchanger 55U552 CCE filtrate cycle. 将过滤的黑液从那里送到蒸发车间用于进一步加工。 The filtered liquor to the evaporation plant from there for further processing.

[0068] 在图5中显示的优选的蒸煮工艺中,用木肩或相似的有机材料填充消化器510。 [0068] Preferred cooking process shown in FIG. 5, the digester is filled with wood shoulder 510 or similar organic material. 用蒸汽进行预水解,此后将中和烧碱液517以烧碱液"垫"的形式提供给消化器510,之后引入CCE碱性滤液516作为部分中和液522。 Pre-hydrolysis with steam, after which the liquid caustic soda and 517 provided in the form caustic "pad" 510 to the digester, after introducing the CCE as part of the alkaline filtrate 516 and the liquid 522. 然后通过适当的煮液置换中和液。 And then replacing the solution by a suitable cooking liquor. 煮液可包括(i)特别是用于蒸煮所制备的来自烧碱液/CCE滤液存储罐(holding tank)520的CCE滤液524 ; (ii)来自黑液存储罐540a的黑液535,任选地用加入量的烧碱液(或CCE滤液)562 增强并且,在该实例中,通过液体加热器553循环用于控制它的温度;和/或(iii)来自下游冷碱提取清洗阶段424 (参见图4)的CCE碱性滤液516,浓缩的或不通过蒸发或其它相似的方法,和任选地用加入的烧碱液519增强或提浓以产生富含烧碱液的浓缩的CCE碱性滤液。 Cooking liquor may comprise (i) in particular for / CCE filtrate storage tank (holding tank) 520 of the filtrate 524 from the CCE caustic cooking prepared; (ii) the black liquor from black liquor storage tank 535 540a, optionally with the addition amount of caustic soda liquid (filtrate or CCE) 562 is enhanced and, in this example, by circulating liquid heater 553 for controlling its temperature; and / or (iii) downstream from the cold alkaline extraction washing stage 424 (see FIG. 4) the alkaline filtrate CCE 516, or concentrated by evaporation or other similar methods, and optionally with the addition of caustic soda solution 519 to produce a concentrate or enhance rich caustic alkaline filtrate concentrated CCE. 将CCE碱性滤液516通过换热器55U552栗入烧碱液存储罐520以在中和阶段中用作中和液522或在蒸煮期中用作蒸煮CCE滤液524。 The CCE caustic alkaline filtrate into storage tank 516 for use as the 520 and liquid phase 522 and used as cooking or cooking period CCE filtrate 524 through the heat exchanger 55U552 Li. 各种煮液的优选浓度在本文别处被描述。 The preferred concentration of the various cooking liquor are described elsewhere herein.

[0069] -旦将煮液加入消化器510,就将消化器510的温度升高到蒸煮温度,在该温度将将消化器保持足够的时期用于发生去木质作用。 [0069] - Once the cooking liquor added to the digester 510, the digester temperature will be raised to a cooking temperature of 510, the digester will be maintained at this temperature for a sufficient period of delignification occurs. 当蒸煮完成时,将每个消化器510中的通风阀打开,然后将来自消化器510的去木质的浆排出到泄料桶560之一中。 When the cooking is completed, the vent valve 510 to open each of the digester, delignification and from the digester slurry 510 is discharged into the drain tank 560 in one. 向着蒸煮循环的末端,将消化器保持加压同时引入来自置换液体灌530的置换液体以置换热黑液或用过的液体一一其从消化器510释放出同时仍然大致在用于蒸煮的温度。 Towards the end of the cooking cycle, the temperature of the digester to maintain pressure while introducing 510 released from the digester for cooking while still substantially filling the liquid from the displacement liquid displacement 530 to displace the hot black liquor or spent liquor eleven . 置换液体,如所指出的, 通常包括黑液或从先前批次的浆生产期间清洗浆或去木质的纤维获得的相似的滤液。 Replacement liquid, as noted, generally include similar or wash filtrate liquor to wood pulp or from pulp production during previous batch of the obtained fiber. 将置换的热黑液收集在一个或多个高温积累罐540中用于随后的再使用。 The replaced hot black liquor collected in one or more high temperature in the accumulation tank 540 for subsequent reuse.

[0070] 最后将消化器510排干以去除去木质的浆。 [0070] Finally, the digester 510 to remove the drained pulp delignification. 先前从消化器510排出的热黑液可再使用(并与其它溶液或滤液如热的烧碱液混合)。 Hot black liquor from a previous digester is discharged reusable 510 (and caustic soda solution mixed with other solutions such as heat or filtrate).

[0071] 整个蒸煮工艺的各个方面可通过进一步参考图6-9来说明。 [0071] Various aspects of the entire cooking process can be described by 6-9 further reference to FIG. 图6A和6B是描述如用于中和步骤的先前存在的工艺的典型液体和材料水平的消化器(如图5中显示的任何消化器510)横断面的图。 (Any digester 510 shown in FIG. 5) is described in FIGS. 6A and 6B and the process step as used in typical pre-existing materials and the liquid level of the digester cross section of FIG. 图7A-7C、8和9也是根据本文公开的一个或多个实施方式描述在蒸煮之前中和期间液体和材料混合物的消化器横断面的图。 FIGS. 7A-7C, 8 and 9 are cross section before FIG digester and cooking liquid mixture during and materials are described in accordance with one or more embodiments disclosed herein. 首先如图6A中所显示的,已知的蒸煮工艺的中和步骤期间消化器610可在预水解之后用基本量一一表示消化器610总体积的显著百分比(例如,60%)--的CCE滤液(液体)616来填充。 First, as shown in 6A, and the digester during the cooking process known procedures after the prehydrolysis 610 may represent eleven significant percentage of the total volume of the digester 610 (e.g., 60%) with a substantial amount - of CCE filtrate (liquid) 616 is filled. 例如,对于具有360立方米容量和72吨木材(干重)和11吨溶解固体的载量的消化器,约21位方米的CCE滤液616可用作中和期的部分。 For example, for a capacity of 360 m3 and 72 tons of wood (dry weight) and 11 tons of dissolved solids loading of the digester, the filtrate of CCEs 616 used as about 21 meters, and in part of. 该步骤期间,CCE滤液浓度可以是大约每升51. 3克NaOH,具有13. 2%的木材的有效碱(EA)载量如NaOH。 During this step, CCE filtrate concentration may be about 51.3 grams per liter of NaOH, having 13.2% of effective alkali timber (EA) loading as NaOH. 预水解之后,消化器610可以是在大致165°C, 具有7巴的相对压力(即,相对于局部大气压的压力)。 After pre-hydrolysis, the digester 610 may be approximately 165 ° C, with a relative pressure of 7 bar (i.e., partial pressure with respect to atmospheric pressure). 在该点,木肩或其它含浆有机材料应当基本上没有空气,在木肩或相似的有机材料内的空隙内部存在蒸汽。 At this point, a shoulder or other wood pulp-containing organic material should be substantially no air, in the presence of steam voids within the interior shoulder of wood or similar organic material. 几乎所有的木肩水都是以液体形式。 Almost all of the wooden shoulder water is in liquid form.

[0072] 当将中和液在130°C的典型温度栗到消化器610时,木肩或其它有机材料内部的蒸汽冷凝结,以及由于冷凝产生的较低的压力液体被吸到木肩或其它有机材料内部。 [0072] When the neutralized solution at a temperature of 130 ° C typical of Li to the digester 610, the steam inside the cold shoulder wood or other organic materials condense, and condensation due to lower pressure of the liquid produced is drawn to the shoulder or wood interior other organic materials. 该工艺期间,将某一量的液体由蒸汽加入并且也由脱气丧失。 During this process, a certain amount of the liquid lost by the steam and also by the addition of degassed. 例如,在上面描述的量下,大约11. 9立方米水可由蒸汽加入,并且约1. 6立方米的水由脱气625丧失。 For example, in the amounts described above, about 11.9 m3 of water vapor may be added, and about 1.6 cubic meters of water was degassed by a loss of 625. 总计,约224净立方米液体,就游离液体(中和液和蒸汽水)而言,可在该部分蒸煮工艺期间加入。 In total, about 224 cubic meters of clean liquid, it is free liquid (liquid and steam and water), it may be added during this part of the cooking process. 预水解和中和之后,消化器610可通常含有大约203立方米游离液体,大致109立方米液体仍然结合在预水解的木肩中,其对应于1. 31m3/BDt (每绝干公吨木肩的立方米液体)或3. 15m3/ADt (每风干公吨木肩的立方米液体)。 After pre-hydrolysis and neutralization, the digester 610 may generally contain from about 203 m3 free liquid, approximately 109 cubic meters of liquid remains bound wood prehydrolysis shoulder, which corresponds to 1. 31m3 / BDt (per bone dry metric ton of wood shoulder cubic meters of liquid), or 3. 15m3 / ADt (per dry metric ton wooden shoulder cubic meters of liquid). 因此,312立方米总容量液体可作为游离液体或者结合在木肩中存在。 Thus, the total capacity of 312 m3 liquid or incorporated as a free liquid present in the timber shoulder. 在该点,消化器610可容纳72公吨木材、吸收在木材内的36公吨水和11公吨各种溶解固体。 At this point, the digester 610 can accommodate 72 tonnes of wood, the absorption in the water timber 36 tonnes and 11 tonnes of a variety of dissolved solids. 在该实例中中和之后液体的密度将是约1. 13t/m3(即,每立方米吨)。 In this example, the density of the liquid and after about 1. 13t / m3 (i.e., tons per cubic meter).

[0073] 现在如图6B所示,加入的中和液将填充到木肩内部的空隙中(打折扣的木肩水) 和木肩周围的空隙空间。 [0073] Now as shown in FIG. 6B, and the solution was added to filling the voids in the interior of the timber shoulder (shoulder water discount wood) and wood void space around the shoulder. 因此,采取目前的实例,21位方米加入的中和液将被分布为填充木肩内部空隙的大致56. 8立方米(消化器610的圆锥体607中8. 3立方米,消化器610的柱状部分608中48. 5立方米),和填充木肩周围的空隙空间的157. 2立方米(消化器610 的圆锥体607中22. 8立方米,消化器610的柱状部分608中134. 位方米)。 Thus, taking the current example, 21 meters and the added liquid will be distributed to fill the internal voids of the wood shoulder approximately 56.8 m3 (607 digester cone 610 8.3 m3 digester 610 void space 48.5 m3), filled with wood, and a shoulder surrounding the columnar portion 608 157.2 cubic meters (22.8 cubic meters digester cone 607 610, cylindrical portion 608 of the digester 610 134 bit meters). 这假设圆锥体607的容积40立方米,柱状部分608的高度9. 6米。 This assumes that the volume of the cone 607 is 40 cubic meters, the height of the columnar portion 608 is 9.6 m. 在这种情况下,消化器圆锥体607中的木肩量可约为9. 3BDt (绝干公吨),具有12. 3立方米的结合的液体体积,位方米的结合的水体积、22. 8立方米的木肩周围游离液体,圆锥体607中容纳31. 1立方米的总体积(即, 22. 8+12. 3-4. 0立方米)。 In this case, the amount of wood shoulder digester cone 607 may be about 9. 3BDt (oven-dry metric tons), having a liquid volume of 12.3 cubic meters of binding, volume of water binding site meters, 22 about 8 cubic meters of wood-free liquid shoulder, accommodating a total volume (i.e., 22.8 + 12. 3-4. 0 m3) 31.1 m3 607 cone. 大约0. 6-0. 7米高的小的带状冷凝物613在液体混合物表面聚集或形成,蒸汽和液体在那里相遇。 About 0. 6-0. 7 meters high small strip condensate accumulation surface 613 is formed in the liquid mixture or, where the vapor and liquid meet.

[0074] 蒸煮工艺中的烧碱液"垫"或提浓步骤可用于替换中和步骤开始中使用的部分CCE 碱性滤液,以减少或避免半纤维素在木纤维上再沉积。 [0074] caustic cooking process in the "pad" or concentrate and the step portion can be used to replace the CCE alkaline filtrate used in the step begins to reduce or avoid redeposition of hemicellulose in the wood fibers. 因此,作为中和期第一部分的预水解之后,将一些烧碱液以优选足以填充木肩或其它含浆有机材料内部的空隙的量加入,之后注入CCE滤液。 Thus, as the pre-hydrolysis of a first portion and after some caustic is preferably sufficient to fill the voids inside shoulder or other wood pulp-containing organic material added in an amount, after injecting CCE filtrate. 优选,对于每公吨木肩,将大约0. 35至0. 55立方米,更优选0. 40至0. 4位方米烧碱液在预水解之后加入,以填充木肩内部的空隙和提高正被生产的浆的最终α含量。 Preferably, for every metric ton of wood shoulders, approximately 0.35 to 0.55 cubic meters, more preferably from 0.40 to 0.4 meters caustic added after pre-hydrolysis, to fill the voids in the wood and improve shoulder n the final content of α pulp being produced. 按照传统的工艺,加入用于中和的液体的剩余部分呈现CCE碱性滤液的形式,或任选地可包括使用浓缩的CCE碱性滤液。 According to the conventional process, the liquid added for neutralization of the remaining portion of the alkaline filtrate CCE presentation form, or may optionally include the use of a concentrated alkaline filtrate CCE. 虽然这些步骤提高消化器中的碱水平,但是发明人已发现半纤维素再沉积被抑制,并且较高的α含量是可达到的同时将其它工艺属性,如粘度、 卡伯值和/或有效碱消耗保持在可接受的范围内。 Although the step of increasing the level of alkali in the digester, but the inventors have found that hemicelluloses redeposition is inhibited, and the higher the α content is achievable while the other processes properties, such as viscosity, kappa number and / or the effective alkali consumption remains within an acceptable range.

[0075] 再参考先前的实例,例如,预水解之后可将30立方米体积的烧碱液加入到含有72 吨木肩的消化器610,如图7Α所显示的。 [0075] Referring again to the previous example, for example, after the pre-hydrolysis may be 30 m3 volume of caustic soda was added to the digester containing 72 tons of wood shoulder 610, as shown 7Α. 如其中所示,烧碱液垫715和木肩或相似的有机材料的下部近乎填充消化器610的圆锥体607。 As shown therein a lower, liquid caustic soda and wood shoulder pad 715 or similar organic material filling the digester near the cone 610 607. 然后,可将82. 9立方米体积的CCE滤液(或者提浓或浓缩的CCE碱性滤液)加入到消化器610以置换烧碱液垫,结果,有效地全部烧碱液将被消耗以填充木肩内部的空隙。 Then, the volume of 82.9 cubic meters of CCE filtrate (or concentrate or concentrated alkaline filtrate CCE) may be added to the digester to displace the caustic pad 610, a result, all of caustic effective to fill the timber will be consumed shoulder internal voids. 这之后将另外的130. 6立方米体积的CCE滤液(优选浓缩的CCE碱性滤液)引入消化器610以完成中和工艺。 After which an additional volume of 130.6 cubic meters of CCE filtrate (preferably the concentrated alkaline filtrate CCE) introduced into the digester 610 to complete the neutralization process. 图7Β显示引入30立方米烧碱液垫和82. 9立方米CCE滤液716之后消化器610的内容物。 After the contents of the digester 610 introduced in FIG 7Β display 30 m3 caustic pad and the filtrate was 82.9 m3 CCE 716. 如所显示的,烧碱液垫和最初CCE滤液的组合在消化器610中占约41%(大致33. 9绝干公吨)木材质量,如图7Β中消化器610中木肩的下部718所反映的。 As shown, a combination of caustic and the first pad CCE filtrate accounted for about 41% of the digester 610 (approximately 33.9 oven-dry metric tons) of wood mass, as shown in the lower portion of the shoulder 610 of wood in the digester 718 reflected 7Β of. 木肩的剩余部分,如消化器610中木肩的上部719所反映的,将被另外的130. 6立方米CCE滤液717覆盖,该CCE滤液717将填充木肩中和木肩周围的空隙,如图7C所示。 The remaining portion of the shoulder of the wood, such as wood in the digester 610 upper shoulder 719 reflect, to be covered with an additional 130.6 m3 CCE filtrate 717, the CCE filtrate was filled timber shoulder 717 and the shoulder around the voids wood, shown in Figure 7C. 如以前,大约0. 6-0. 7米高的小的带状冷凝物713在液体混合物表面形成。 As before, about 0. 6-0. 7 meters high small strip condensate 713 formed in the surface of the liquid mixture.

[0076] 加入消化器610的烧碱液垫可具有每升95至125克NaOH的有效碱(ΕΑ)浓度,更优选,每升105和115克NaOH之间的有效碱浓度,最优选,每升大约110克NaOH。 Effective alkali concentration of between [0076] the effective alkali (ΕΑ) was added caustic digester pad 610 may have a 95 to 125 grams per liter of NaOH concentration, more preferably, 105 and 115 g NaOH per liter, most preferably, per liter about 110 grams of NaOH. 在这样的情况下,木材上相当的碱载量可以是大约4%。 In this case, the base corresponding to the loading timber may be about 4%. 在加入30立方米烧碱液垫和82. 9立方米CCE滤液716之后但在剩余CCE滤液717之前,消化器610的圆锥体607中结合的液体是大约8. 3立方米,圆锥体中游离的液体是大约23立方米。 After the addition of caustic soda was 30 m3 82.9 m3 CCE pad and the filtrate 716, but before the remaining filtrate CCE 717, the liquid cone 607 combined digester 610 is approximately 8.3 m3, free of cone liquid is about 23 cubic meters. 消化器610的柱状部分608中的结合的液体是约21. 7立方米。 The liquid binding columnar portion 608 of the digester 610 is about 21.7 m3.

[0077] 烧碱液垫优选提供至少10%的中和期中使用的总有效碱载量,更优选提供13%和25%之间的中和期中使用的总有效碱载量,最优选提供20%和25%之间的中和期中使用的总有效碱载量。 [0077] The pad is preferably caustic alkali to provide an effective total amount of at least 10% of the carrier and the period of use, the total effective alkali loading period and more preferably provide between 13% and 25% of the use, and most preferably 20% to provide the total effective alkali loading period and between 25% and used. 在上面的实例中,烧碱液垫提供的木材上有效碱载量是4%,而对于中和液的剩余部分,木材上的有效碱载量是来自CCE滤液的13. 2%,对于总的17. 2%有效碱载量。 In the example above, the effective alkali loading timber provided caustic pad is 4%, and for the remaining portion of the liquid, the effective loading on the base timber 13. 2% CCE from the filtrate, for a total of 17.2% effective alkali loading. 因此,在该实例中,烧碱液垫提供23%的木材上总有效碱载量。 Thus, in this example, caustic alkali pad provide an effective total loading of 23% of the wood.

[0078] -方面,在图7B和7C中显示的工艺中由于当富含半纤维素的CCE滤液遇到木肩或其它相似的材料时,木肩或其它材料将已被烧碱液中和,所以如本文所描述的,烧碱液垫的使用可避免或减少中和阶段期间pH震荡。 [0078] - aspect, the process shown in Figures 7B and 7C since the hemicellulose rich when a CCE filtrate encounter shoulder or other similar wood material, wood or other material shoulder lye is burned and, Therefore, as described herein, using caustic pad can avoid or reduce shock during the neutralization phase pH. 当吸收进木肩空隙时,烧碱液垫715通常增加木肩或其它相似的有机材料的pH。 When absorbed into the wood shoulder voids, caustic pad 715 pH generally increases shoulder wood or other similar organic materials. 当加入CCE滤液时,未被吸收的剩余的烧碱液被置换, 并且当它在消化器610中升高时,在CCE滤液可达到那些木肩或有机物质之前它继续中和另外的木肩和有机物质。 When the CCE filtrate was added, the remaining unabsorbed liquid caustic soda is replaced, and when it is raised in the digester 610, and it continues to the additional shoulder and wood can be achieved before the wooden CCE filtrate shoulder or organic substances organic material. 由于CCE滤液引入跟随着烧碱液垫715,所以富有半纤维素的CCE 滤液液体首先遇到已被中和的那些木肩或有机材料,这避免或最小化pH震荡,可能的例外是向着消化器610最顶部的少量木肩或有机物质。 Since the introduction of CCE filtrate followed by caustic liquid cushion 715, so rich hemicellulose CCE filtrate liquid is first encountered by those who have shoulder or wood and organic materials, which avoids or minimizes pH shock, with the possible exception towards the digester a small amount of wood or shoulder 610 at the top of most organic substances. 来自CCE滤液的半纤维素将留在溶液中而不是被再吸收或沉积在木肩或有机材料上。 Hemicellulose filtrate from the CCE will remain in solution rather than being re-absorbed or deposited on a shoulder of wood or organic material. 这反过来增加浆粗浆的纯度并最后导致具有较高纯度的最终产物。 This in turn increase the purity of the pulp is brownstock and eventually lead to a final product having a higher purity.

[0079] 图8和9显示根据本文公开的一个实施方式,随后的热黑色填充和最后液体置换步骤期间液体和材料混合物和水平。 [0079] FIGS. 8 and 9 show, according to one embodiment disclosed herein, and the subsequent thermal black fill fluid displacement during the last step and the liquid level and material mixture. 如图8-一其显示引入煮液和置换现存的液体一一所示,中和期完成之后可将210立方米体积的热黑液815加入消化器610。 FIG 8- showing a cooking liquor introduced into the liquid and the replacement of existing shown eleven, and after the completion of 210 m3 volume of hot black liquor 815 may be added to digester 610. 然后,可将14位方米体积的CCE滤液(提浓的CCE滤液或浓缩的CCE碱性滤液)817加入消化器610,之后加入另一个20立方米体积的热黑液821,由此置换中和液,其在该点已变得有残液和杂质渗入并因此呈现黑液840的形式。 Then, the CCE can be 14 meters filtrate volume (filtrate or concentrate a CCE of CCE alkaline filtrate concentrated) was added 817 610 digester, after the addition of another volume of 20 cubic meters of hot black liquor 821, thereby replacing the and a liquid, which has become at this point has residual liquid impurities penetrate and thus take the form of black liquor 840. 在该实例中,将351立方米的黑液840从消化器610置换并送到黑液积累罐("AC2"),如图5中的积累罐540b。 In this example, 351 cubic meters of the black liquor from the digester 610 and 840 to the replacement liquor can accumulate ( "AC2"), the accumulation of 5 in the tank 540b as shown in FIG.

[0080] 图8显示的工艺中消化器610中加入CCE滤液的碱载量在7%和12%之间--表示为基于干木材的有效碱,更优选8. 9%左右一一以基于干木材的NaOH的形式表示。 [0080] FIG. 8 base loading process digester CCE filtrate was added 610 displayed between 7% and 12% - expressed as effective alkali based on dry wood, and more preferably about 8.9% based on the eleven in the form of dry wood of NaOH representation. 蒸煮期需要的总碱载量由和提浓的热黑液一起加入的碱补充。 Was added together with a total base loading of cooking required concentrate and hot black liquor from the alkali added. 黑液815、821和CCE滤液716的组合加入之后,消化器610内部的总液体体积是大约312立方米,消化器610内部的总液体质量是约353吨,并且消化器610内部的液体密度是大约1. 13。 After the black liquor filtrate 716 815,821 and CCE combination is added, the total liquid volume inside the digester 610 is about 312 cubic meters, the total mass of the liquid interior of the digester 610 is about 353 tons, and the liquid is the density of the interior of the digester 610 approximately 1.13.

[0081] 图9显示在蒸煮工艺结束时置换液体的引入,其导致置换用过的煮液。 [0081] Figure 9 shows the displacement liquid is introduced at the end of the cooking process, which results in replacement of the spent cooking liquor. 如图9所示,可将475立方米体积的置换液体930在蒸煮期结束时加入消化器610。 9, may be replaced with a liquid volume of 475 m3 digester 930 was added 610 at the end of the cooking period. 煮液一一其在该点已变得有浆残液和杂质渗入一一可被排出为220立方米第一体积的相对强的和热的黑液942-一其存储在用于容纳这种类型黑液的第一黑液积累罐("AC1",例如,图5中的灌540a) 一一和255立方米第二体积相对较弱的黑液941 一一其存储在用于容纳较弱类型黑液的第二黑液积累罐("AC2",例如,图5中的灌540b)。 Eleven cooking liquor which has become at this point and there penetration of impurities into eleven residue slurry can be discharged relatively strong as 220 cubic meters and thermal black liquor 942- a first volume for receiving stored in such a the first black liquor tank accumulation of black liquor type ( "AC1", e.g., FIG. 5 filling 540a) a second volume of 255 m3 and eleven relatively weak black liquor which is stored in the eleven 941 for receiving weak the second black liquor tank accumulation of black liquor type ( "AC2", e.g., FIG. 5 filling 540b). 一些量煮液保持结合于蒸煮的木肩或其它带有浆的有机材料。 Some amount of the cooking liquor at cooking remain bound wood or other organic material with a shoulder slurry. 工艺产生大约31. 1绝干吨蒸煮的浆,具有大致41. 1吨已在蒸煮和相关工艺中溶解的固体。 Process Approximately 31.1 odt pulp cooking, having a substantially solids had dissolved 41.1 tons of cooking and in related processes.

[0082] 图10是根据本文公开的一个或多个实施方式,如可用于冷碱提取制浆工艺的蒸煮工艺1000的工艺流程图。 [0082] FIG. 10 is according to one or more embodiments disclosed herein, it can be used as cold caustic extraction process of cooking pulping process flow 1000 of FIG. 图10中的工艺1000由木肩给料步骤1005开始,其中将木肩或其它含浆有机材料连同蒸汽一起投入能抵抗高压的消化器。 Process 1000 in FIG. 10 by the timber feeding step 1005 begins a shoulder, wherein a shoulder or other wood pulp-containing organic material together with the high-pressure steam into the digester together can resist. 如先前所指出的,木材类型或其它植物或有机材料的具体选择可取决于期望的最终产物。 As previously noted, the particular choice of the type of wood or other plant or organic material may depend on the desired end product. 引入蒸汽以提高消化器内部木肩的填装。 Steam is introduced to raise the internal timber filled digester shoulder. 然后可将消化器在一个或多个步骤中加热;在该实例中,将消化器通过蒸汽加热到预定温度(例如,110至130°c,更具体地,可以是大约120°C )或另外在最初的加热步骤1018中加热,之后在随后的步骤1020中加热到预水解温度(例如加热到165°C左右), 虽然这两个步骤可在一些实施方式中可能组合。 The digester may then be heated in one or more steps; In this example, the digester is heated by steam to a predetermined temperature (e.g. 110 to 130 ° c, more specifically, can be about 120 ° C) or in addition in the first heating step 1018 is heated, followed by heating in a subsequent step 1020 to a pre-hydrolysis temperature (e.g., heated to about 165 ° C), although the combination of these two steps may be in some embodiments. 加热时间可在一些程度上取决于设备的细节、消化器的容积、木肩的体积和正被加热的有机材料的性质。 The heating time may depend on details of the devices in some extent, the nature of the digester volume, the volume of wood being heated and the shoulder of the organic material.

[0083] -旦达到预水解温度,就将消化器保持在该温度合适的时期,例如,35至45分钟或足以完成预水解阶段1025的任何其它时间。 [0083] - Once reached the prehydrolysis temperature, kept at this temperature digester will be an appropriate time, e.g., 35-45 minutes or any other time sufficient to complete the prehydrolysis stage 1025. 接下来,进行中和步骤1030。 Next, in step 1030. 在优选实施方式中,首先将包括烧碱液1015的中和溶液加入消化器,之后引入CCE滤液液体1016。 In a preferred embodiment, it comprises a first and a solution of caustic soda was added 1015 digester, after the introduction of the liquid filtrate CCE 1016. 烧碱液1015可采取,例如,氢氧化钠和硫化钠混合物的形式,具有根据本文别处描述的任意实施方式的有效碱含量。 1015 may take the caustic, e.g., sodium hydroxide and sodium sulfide in the form of a mixture, having an effective alkali content in accordance with any of the embodiments described elsewhere herein. 例如,烧碱液1015可具有每升80至150克有效碱如氢氧化钠(NaOH), 优选每升100至110克有效碱如氢氧化钠。 For example, caustic 1015 may have 80 to 150 grams per liter of effective alkali such as sodium hydroxide (NaOH), preferably from 100 to 110 grams per liter of effective alkali such as sodium hydroxide. 烧碱液1015的硫化度优选在20%和30%之间, 但在一些实施方式中可变化。 1015 of caustic sulfide preferably between 20% and 30%, in some embodiments, may vary. CCE滤液1016可包括再循环的CCE碱性滤液一一其获自下游CCE清洗工艺和任选地通过蒸发或其它方法被浓缩。 The filtrate was 1016 may include a CCE of CCE recycled alkaline filtrate which is obtained from the downstream CCE eleven cleaning process and optionally concentrated by evaporation or other methods. CCE滤液1016中的有效NaOH浓度可以是,例如,每升50至75克,虽然它可根据具体工艺而改变。 CCE effective NaOH concentration in the filtrate may be 1016, for example, 50 to 75 grams per liter, although it may vary depending on the particular process.

[0084] 优选,根据图7A-7C描述的工艺首先将烧碱液1015作为"垫"引入,之后引入CCE 滤液液体1016。 [0084] Preferably, the first caustic 1015 as a "cushion" is introduced according to the process described in FIGS. 7A-7C, after the introduction of the liquid filtrate CCE 1016. 然后,在步骤1035中,将第二部分热黑液1017引入消化器,如结合图8所描述的。 Then, in step 1035, the second portion of the heat introduced into the digester black liquor 1017, as described in conjunction with FIG. 8.

[0085] 在接下来的步骤1040中,将第二烧碱液1019加入消化器用于蒸煮目的。 [0085] In the next step 1040, the second 1019 caustic added digester for cooking purposes. 作为备选,烧碱液1019可由再循环的CCE碱性滤液替换,该再循环的CCE碱性滤液获自下游CCE 清洗工艺和任选地通过蒸发或其它方法被浓缩。 Alternatively, 1019 may be the recycled caustic alkaline filtrate Alternatively CCE, the CCE recycled alkaline filtrate obtained from the cleaning process and the downstream CCE optionally be concentrated by evaporation or other methods. 该时期期间,如步骤1045所指示的,通过蒸发或其它方法将消化器的内含物加热到适当的蒸煮温度;将该温度在蒸煮步骤1050中保持适合在消化器中获得木浆去木质作用的时期。 During this period, as indicated in step 1045, by evaporation or other means digester contents were heated to a suitable cooking temperature; the temperature in the cooking step 1050 for holding in the obtained pulp delignification digester period. 蒸煮温度可以是140和180°C之间,并优选是150至160°C之间,虽然可以是任何合适的温度。 Cooking temperature can be between 140 and 180 ° C, preferably between 150 and 160 ° C, although any suitable temperature may be. 加热可以在10至30分钟的时期或其它合适的时期里。 Heating may be 10 to 30 minutes or other suitable time period in. 将消化器保持在蒸煮温度持续合适的时期用于蒸煮工艺,如15至120分钟。 The digester is maintained at the cooking temperature for a suitable period of time for the cooking process, such as 15 to 120 minutes. 温度范围和蒸煮时间通常针对目标Η因子来选择,如先前所描述的。 Cooking time and temperature ranges generally selected target Η factors, as previously described.

[0086] 蒸煮之后,如步骤1055所指示的,将通常来自粗浆清洗步骤的稀释的黑液1034引入消化器,并且排出浆内含物用于下游加工。 [0086] After the cooking, as indicated in step 1055, will generally be diluted black liquor 1034 from the brownstock washing step is introduced into the digester and pulp discharge the contents for downstream processing. 然后,排放消化器并可将其清洗和清洁,如步骤1060所指示的,并且下一批木肩可以以相同的方式被加工,如步骤1070所指示的。 Then, the digester may be discharged washing and cleaning, as indicated in step 1060, and the next batch of wood shoulder may be processed in the same manner, as indicated by step 1070. 实施例 Example

[0087] 在以下实施例中说明本发明的实施方式的工艺。 [0087] The embodiments described process embodiment of the present invention in the following examples. 实施例中描述的分析结果使用图11中显示的总工艺一一其列出了一系列通常在根据图10的工艺流程1000中进行的步骤一一获得,并参考大约20升容积的台式规模消化器进行描述以模拟工业工艺。 Results were analyzed using the overall process described in the embodiment of FIG. 11 in the embodiment shown which lists a series of eleven typically eleven in step 1000 is obtained according to the process flow of FIG. 10, with reference to approximately 20 liter capacity desktop size digested It is described in order to simulate industrial process. 下面更详细地说明图11中显示的程序和具体实施例之间的差别。 The difference between the procedures described below and the specific examples shown in Figure 11 in more detail.

[0088] 如图11所指示的,工艺通常由消化器预汽蒸30分钟开始以在消化器中获得最初的温度和湿度,连同将木肩(在该情况下是桉树)加入消化器;虽然在实验室的情况下,可不需要蒸汽填装。 [0088] FIG. 11 indicated by the digester pre-steaming process typically starts 30 minutes to obtain the initial temperature and humidity in the digester, together with the timber shoulder (Eucalyptus in this case) was added digester; While in the case of the laboratory, can be no steam filled. 然后通过提供蒸汽给消化器而将消化器进一步加热,持续大约60分钟的时期以将温度达到165°C。 The digester is then further heated by steam to a digester for a period of about 60 minutes to reach a temperature of 165 ° C. 然后在165°C的温度进行预水解步骤,持续,例如,大约40分钟。 Then at a temperature of 165 ° C prehydrolysis step for, e.g., about 40 minutes. 然后,在一些实施例中,作为中和工艺的部分,加入CCE碱性滤液或第一烧碱液垫。 Then, in some embodiments, and as part of the process, a first addition of caustic CCE alkaline filtrate or liquid cushion. 该工艺需要大约15分钟并在大致150°C的温度进行。 The process takes about 15 minutes and at a temperature of 150 ° C approximately. 接下来,加入第一热黑液以填充消化器的剩余部分。 Next, a first hot black liquor is added to fill the remaining portion of the digester. 第一热黑液的引入需要大约15分钟,并在140°C的温度进行。 Introduced into the first hot black liquor is about 15 minutes, and at a temperature to 140 ° C. 接下来,在置换步骤期间将第二热黑液加入消化器,这在大约146°C的温度进行23分钟。 Next, during the step of replacing the second hot black liquor added digester, this is done at a temperature of about 146 ° C in 23 minutes. 这两个热黑液步骤共同代表热的液体填充一一其将在工业操作中进行。 Both the hot black liquor liquid together represent hot filling step which will be eleven in commercial operations. 接下来,加入烧碱液或CCE碱性滤液以结束置换工艺,开始蒸煮期。 Next, add caustic soda solution or CCE alkaline filtrate to end the replacement process, start cooking period. 如果需要,还可将一些热黑液投入消化器。 If necessary, some of the hot black liquor into the digester. 该烧碱液(或CCE 碱性滤液)和热黑液的混合物可在大约152°C的温度和10. 0巴的压力进行,例如,12分钟。 The caustic mixture (or CCE alkaline filtrate) and hot black liquor can be carried out at a temperature of about 152 ° C and a pressure of 10.0 bar, e.g., 12 minutes. 对于蒸煮步骤,将液体在9. 1巴的轻微减压在3分钟期间以每分钟大约3升的速度通过消化器进行循环。 For cooking step, the liquid is slightly reduced pressure of 9.1 bar to about 3 liters per minute circulates through the digester during 3 minutes. 然后将消化器的内含物在14分钟的时期里加热回到,例如,大致160°C,并然后在合适的蒸煮期期间保持在该温度大约,例如,23分钟。 Then returned to the digester contents were heated in a period of 14 minutes in, e.g., approximately 160 ° C, and then kept at this temperature during about a suitable cooking period, e.g., 23 minutes. 接下来,将稀释的液体作为置换液引入,并且将消化器的内含物排出用于下游加工。 Next, the diluted liquid is introduced as a substitution liquid, and the digester contents are discharged for downstream processing. 将稀释的液体以每分钟一升的速度继续引入并在消化器中循环足够的时期。 The diluted liquid continues introduced in one liter per minute, and in cycles sufficient period of time in the digester. 然后将消化器排泄并可清洗和清洁以为新一批做准备。 Then drain and digester cleaning and cleaning in preparation for the new batch.

[0089] 图13A和13B是总结根据下面描述的实施例2-9的各种工艺条件和结果的表。 [0089] FIGS. 13A and 13B are summarized below in accordance with various embodiments described process conditions and the results of Table 2-9. 特别地,图13A显示各种不同实施例的工艺条件和参数,图13B以表格形式显示相应的结果。 In particular, FIG. 13A shows the process conditions and parameters of the various embodiments, FIG. 13B shows the corresponding results in tabular form. [0090] 实施例1 [0090] Example 1

[0091] 在中和和蒸煮步骤中使用烧碱液和热黑液组合的牛皮纸浆制法 [0091] Use the Kraft black liquor and hot caustic solution in combination and the cooking step and

[0092] 根据第一实施例,将20升台式规模消化器用蒸汽在30分钟时期里预加热到120°C。 [0092] According to the first embodiment, 20 liters of a desktop size with steam digestor preheated to 120 ° C in 30 minutes time. 将4700克烘干的含浆有机材料如桉树或其它木肩加入消化器。 The 4700 grams of dry eucalyptus slurry containing an organic material such as wood or other shoulder added digester. 实验室顺序操作遵循图11。 Laboratory follow the order of operations 11. 将消化器在60分钟的时期里加热到165°C并保持在165°C持续另外40分钟以完成预水解阶段。 The digester was heated in a period of 60 minutes to 165 ° C and was held at 165 ° C for an additional 40 minutes to perform a pre-hydrolysis stage. 将4. 51升具有每升124. 7g NaOH的有效碱的第一烧碱液("WL1")在150°C的温度在十五分钟里加入消化器。 A first caustic ( "WL1") having a 4.51 liters per liter of effective alkali 124. 7g NaOH is added in the digester fifteen minutes at a temperature of 150 ° C. Η因子计算在该点开始。 Η factor calculation starts at that point. 然后,将10. 8升具有每升25. 3g NaOH的有效碱的第一热黑液("HBL1")在140°C的温度在15分钟里加入,以完成中和步骤。 Then, 10.8 liters per liter of effective alkali with 25. 3g NaOH of a first hot black liquor ( "HBL1") was added in 15 minutes at a temperature to 140 ° C, to complete the neutralization step. 然后将10. 0升具有每升25. 3g NaOH的有效碱的第二热黑液("HBL2")在146°C 的温度在23分钟的时期里加入消化器以置换用过的HLB1和WL1,之后在10巴和152°C在12分钟的时期里加入由1升HBL2和4. 16升具有每升124. 7g NaOH的有效碱浓度的第二烧碱液("WL2")的混合物组成的煮液。 Then 10.0 liters per liter of effective alkali with 25. 3g NaOH second hot black liquor ( "HBL2") was added during 23 minutes in the digester at a temperature of 146 ° C was to replace the spent HLB1 WL1 and after the mixture was added a 1 liter liter and 4.16 HBL2 having a second liquid caustic soda per liter of effective alkali concentration of 124. 7g NaOH ( "WL2") consisting in a period of 12 minutes was 10 bar and 152 ° C of cooking liquid. 该系列操作期间一个有意义的工艺参数是总有效碱载量,其通常以在考虑所有加入的液体的整个体积和它们各自的浓度而计算的木肩重量(干基)上碱百分数的方式表示。 A meaningful series of operations during the process parameter is the total quantity of effective alkali is contained, the percentage of alkali (dry basis) which is typically added in consideration of the entire volume of all the liquid and their respective concentrations calculated gravimetrically represented wood shoulder . 对于该实施例,木材上总当量有效碱载量是用于中和期的12%EA如NaOH,和用于蒸煮期的11%EA如NaOH。 For this embodiment, the total equivalent effective timber loading base is used in 12% EA and period such as NaOH, and a cook period of 11% EA as NaOH. 中和步骤("中和物(Neutralysate)")之后收集置换的WL1和HBL1的样品以测量和遵循pH行为,通常从置换操作的开始到该操作结束。 After the neutralization step ( "neutralization thereof (Neutralysate)") was collected and replaced with HBL1 WL1 to measure sample pH and follow them, usually from beginning to end of the operation of the permutation operation. 收集置换的液体用于后面的回收。 Collecting liquid displacement for recovering later.

[0093] 将包括HBL2和WL2的煮液在9. 1巴的压力下以每分钟3升的速度循环3分钟。 [0093] The WL2 and comprising HBL2 cooking liquor circulating 3 liters per minute at a pressure of 9.1 bar for 3 minutes. 然后将消化器在14分钟的时期里加热到160°C并保持在160°C持续另一个23分钟。 The digester is then heated in a period of 14 minutes to 160 ° C and was held at 160 ° C continued another 23 minutes. 取反应混合物的等分试样以在反应结束时测量NaOH浓度("EoC")。 The reaction mixture was taken to measure the aliquot of NaOH concentration ( "EoC") at the end of the reaction. EoC是每升大约23. 3g NaOH。 EoC per liter to about 23. 3g NaOH.

[0094] 然后将消化器冷却,并用稀释的苛性碱溶液清洗反应混合物两次。 [0094] The digester was then cooled, and the reaction mixture was washed twice with a dilute caustic solution. 每次清洗使用15升含有每升稀释的液体溶液("DL")大约0. 2g NaOH的水溶液。 Containing 15 liters each wash solution per liter of diluted liquid ( "DL") of an aqueous solution of about 0. 2g NaOH. 第一次清洗之后用过的液体含有每升大约21. 9g NaOH并可用于制备下一批热黑液。 After the first spent washing liquid containing per liter about a group of 21. 9g NaOH and the hot black liquor prepared. 第二次清洗之后用过的液体含有每升大约13. 0g NaOH并与中和物组合。 Used after the second washing liquid containing per liter about 13. 0g NaOH and combined with the neutralized product. 组合的液体具有每升6. 4gNaOH的EA (等于3. 88%Na0H)。 Per liter of liquid composition having a 6. 4gNaOH EA (equal to 3. 88% Na0H). 在工厂可将该混合物蒸发以形成更浓缩的苛性碱溶液用于回收锅炉燃烧。 The mixture in the factory may be evaporated to form a more concentrated solution of caustic recovery boiler for combustion.

[0095] 将实验室台式消化器首先用循环DL (稀释的液体)以每分钟1升的速度通过消化器清洁10分钟,然后首先用33升纯水清洗两次,然后用45升纯水清洗。 [0095] The first with a laboratory bench digester circulation DL (diluted liquid) of 1 liter per minute through the digester cleaning for 10 minutes and then washed first with 33 liters of pure water twice, and then washed with 45 liters of pure water . 来自第一清洗的用过的清洗液体含有每升大约0. 9g NaOH,并可用于制备下一批DL。 Used cleaning liquid from the first wash comprises per liter about 0. 9g NaOH, and preparation for the next batch of DL.

[0096] 得到的粗浆显示11. 9的卡伯值、1117ml/g的粘度、3. 54%的S10溶解度和2. 7%的S18溶解度。 [0096] The resulting brownstock Kappa number 11.9 is displayed, 1117ml / g viscosity, 3.54 percent solubility of S10 and S18 solubility of 2.7%. 反应具有39. 8%的产率。 The reaction with a yield of 39.8%. 当筛选时,混合物具有0.4%的废料率(rejectionrate),导致39. 4%的筛选产率。 When screening for the mixture has a reject rate of 0.4% (rejectionrate), resulting in a yield of 39.4% Screening of. 反应的Η因子是333。 Η reaction factor is 333.

[0097] 图12是绘制各个样品的中和物的pH和有效碱浓度的图,指示碱含量的趋于平衡(levelling off),这发出蒸煮阶段总体完成的信号。 [0097] FIG. 12 is a graph plotting pH and effective alkali concentration thereof and FIG respective samples, indicating more balanced alkali content (levelling off), which sends a signal to complete the overall cooking stage.

[0098] 实施例2 [0098] Example 2

[0099] 在中和和蒸煮步骤中使用烧碱液的牛皮纸浆制法 [0099] In the use of caustic soda solution and the cooking step and the Kraft process

[0100] 根据第二实施例,重复与实施例1中描述的相同的制浆工艺,在中和和蒸煮期中使用烧碱液。 [0100] According to the second embodiment, the same was repeated in a pulping process described embodiment, a caustic soda solution in the neutralization and cooking period. 中和物具有10. 2的pH,最后的煮液具有每升26. 7g NaOH的EoC。 And has a pH 10. 2, the final cooking liquor having liter of 26. 7g NaOH EoC. 预水解的P因子是310,蒸煮反应的Η因子是394。 Prehydrolyzed factor P 310, Η digestion reaction factor is 394. 对于该实施例,木材上总当量有效碱载量分别是: 中和期12%ΕΑ如NaOH,蒸煮期11%ΕΑ如NaOH。 For this embodiment, the total equivalent effective alkali loading wood are: and of 12% ΕΑ such as NaOH, 11% ΕΑ of cooking such as NaOH.

[0101] 得到的粗浆显示10. 3的卡伯值、988ml/g的粘度、3. 6%的S10溶解度和2. 7%的S18溶解度。 [0101] The resulting brownstock Kappa number 10.3 is displayed, 988ml / g viscosity, 3.6% of the solubility of S10 and S18 solubility of 2.7%. 反应具有39. 3%产率。 The reaction has a yield of 39.3%. 当筛选时,混合物具有0. 13%废料率,导致39. 1%的筛选产率。 When filtering, the mixture having 0.13 percent scrap rates, resulting in a yield of 39.1% Screening of.

[0102] 实施例3 [0102] Example 3

[0103] 分别在中和中使用CCE54和在蒸煮步骤中使用烧碱液的牛皮纸浆制法 [0103] and were used CCE54 Kraft method using a caustic soda solution in the cooker and in step

[0104] 根据第三实施例,重复与实施例1中描述的相同的制浆工艺,除了用来自CCE步骤具有每升54g NaOH的EA的滤液("CCE54")替换用于中和的烧碱液。 And caustic [0104] According to the third embodiment, the same was repeated in the pulping process described in Example 1, except that the step of CCE having from EA 54g NaOH per liter of filtrate ( "CCE54") used to replace . 中和物具有8. 6的pH,蒸煮混合物具有每升23. 5g NaOH的EoC。 And having a pH 8. 6, having a cooked mixture of 23. 5g NaOH per liter EoC. 预水解的P因子是300,蒸煮反应的Η因子是364。 Prehydrolyzed factor P 300, Η digestion reaction factor is 364. 对于该实施例,木材上总当量有效碱载量分别是:中和期12%ΕΑ如NaOH,蒸煮期11%ΕΑ 如NaOH。 For this embodiment, the total equivalent effective alkali loading wood are: and of 12% ΕΑ such as NaOH, 11% ΕΑ of cooking such as NaOH.

[0105] 得到的粗浆显示11. 0的卡伯值、1059ml/g的粘度、4. 0%的S10溶解度和3. 1%的S18溶解度。 [0105] The resulting brownstock Kappa number 11.0 is displayed, 1059ml / g viscosity, 4.0% of the solubility of S10 and S18 solubility of 3.1%. 反应具有40. 3%的产率。 The reaction having a yield of 40.3%. 当筛选时,混合物具有0. 16%的废料率,导致40. 2% 的筛选产率。 When screening with a mixture of 0.16% of the waste, resulting in a yield of 40.2% Screening of.

[0106] 实施例4 [0106] Example 4

[0107] 在中和和蒸煮步骤中使用CCE54的牛皮纸浆制法 [0107] Use the Kraft process and CCE54 in the cooking step and

[0108] 根据第四实施例,重复与实施例1中描述的相同的制浆工艺,除了CCE54替换中和和蒸煮步骤中的烧碱液。 [0108] According to the fourth embodiment, the same was repeated in the pulping process described in Example 1, except replacing CCE54 caustic neutralization and cooking steps. 中和物具有11. 〇的pH,蒸煮混合物具有每升18. 5gNa0H的EoC。 And has a pH 11. In the square, having a cooked mixture of EoC 18. 5gNa0H liter. 预水解的P因子是297,蒸煮反应的Η因子是419。 Prehydrolyzed factor P 297, Η digestion reaction factor is 419. 对于该实施例,木材上总当量有效碱载量分别是:中和期12%ΕΑ如NaOH,蒸煮期11%ΕΑ如NaOH。 For this embodiment, the total equivalent effective alkali loading wood are: and of 12% ΕΑ such as NaOH, 11% ΕΑ of cooking such as NaOH.

[0109] 得到的粗浆显示10. 8的卡伯值、1118ml/g的粘度、4. 5%的S10溶解度和3. 6%的S18溶解度。 [0109] The resulting brownstock Kappa number 10.8 is displayed, 1118ml / g viscosity, 4.5% of the solubility of S10 and S18 solubility of 3.6%. 反应具有40. 4%的产率。 The reaction having a yield of 40.4%. 当筛选时,混合物具有0. 09%的废料率,导致40. 3% 的筛选产率。 When screening with a mixture of 0.09% of the waste, resulting in a yield of 40.3% Screening of.

[0110] 实施例5 [0110] Example 5

[0111] 在中和和蒸煮步骤中使用"弱的"烧碱液的牛皮纸浆制法 [0111] using the "weak" Kraft caustic soda solution and in the cooking step and

[0112] 根据第五实施例,重复与实施例1中描述的相同的制浆工艺,除了具有每升54gNa0H的EA的烧碱液("WL54")用于中和和蒸煮步骤。 [0112] According to the fifth embodiment, the same was repeated in the pulping process described in Example 1, except that caustic soda solution ( "WL54") having 54gNa0H per liter of EA for neutralization and cooking steps. 中和物具有11. 3的pH,蒸煮混合物具有每升18. 8g NaOH的EoC。 And having a pH 11. 3, having a cooked mixture of 18. 8g NaOH per liter EoC. 预水解的P因子是300,蒸煮反应的Η因子是429。 Prehydrolyzed factor P 300, Η digestion reaction factor is 429. 对于该实施例,木材上总当量有效碱载量分别是:中和期12%ΕΑ如NaOH,蒸煮期11%ΕΑ如NaOH。 For this embodiment, the total equivalent effective alkali loading wood are: and of 12% ΕΑ such as NaOH, 11% ΕΑ of cooking such as NaOH.

[0113] 得到的粗浆显示11. 2的卡伯值、1158ml/g的粘度、3. 7%的S10溶解度和3. 1%的S18溶解度。 [0113] The resulting brownstock Kappa number 11.2 is displayed, 1158ml / g viscosity, 3.7% of the solubility of S10 and S18 solubility of 3.1%. 反应具有40. 2%的产率。 The reaction having a yield of 40.2%. 当筛选时,混合物具有0. 12%的废料率,导致40. 0% 的筛选产率。 When screening with a mixture of 0.12% of the waste material, resulting in a yield of 40.0% Screening of.

[0114] 与实施例2和5中的S18溶解度的比较提示较高的碱浓度可有助于抑制蒸煮步骤中半纤维素再沉积。 [0114] Example 2 and Comparative 5 tips S18 solubility in alkali concentration higher cooking step can help inhibit redeposition hemicellulose. 实施例3、4和5中结果的比较提示CCE滤液的使用对最终产物中半纤维素含量具有负面影响。 Comparative Examples 3, 4 and 5 result tips with CCE filtrate having a negative effect on the hemicellulose content in the final product. 为了进一步减少半纤维素含量同时最大化CCE滤液的利用,进行以下实验。 To further reduce the hemicellulose content while maximizing the use of CCE filtrate, the following experiment.

[0115] 实施例6 [0115] Example 6

[0116] 在中和和蒸煮步骤中使用CCE60的牛皮纸浆制法 [0116] Use the Kraft process and CCE60 in the cooking step and

[0117] 根据第六实施例,重复与实施例1中描述的相同的制浆工艺,除了具有每升60gNa0H的EA的CCE滤液("CCE60")替换中和和蒸煮步骤中的烧碱液。 [0117] According to the sixth embodiment, the same was repeated in the pulping process described in Example 1, except having a CCE filtrate EA 60gNa0H per liter caustic replacement neutralization and cooking steps ( "CCE60"). 由于蒸煮期中较高的碱载量,将蒸煮温度从160°C降低到155°C,但是蒸煮时间相应地增加。 Due to the high amount of alkali contained cooking period, the cooking temperature from 160 ° C to 155 ° C, but the cooking time is correspondingly increased. 中和物具有11. 2的pH,蒸煮混合物具有每升24. 5g NaOH的EoC。 And having a pH 11. 2, having a cooked mixture of 24. 5g NaOH per liter EoC. 预水解的P因子是272,蒸煮反应的Η因子是389。 Prehydrolyzed factor P 272, Η digestion reaction factor is 389. 对于该实施例,木材上总当量有效碱载量分别是:中和期12%EA如NaOH,蒸煮期12. 5%EA 如NaOH。 For this embodiment, the total equivalent effective timber loading base are: 12% EA and of such as NaOH, cooking of 12. 5% EA as NaOH.

[0118] 得到的粗浆显示11. 4的卡伯值、1155ml/g的粘度、4. 6%的S10溶解度和3. 6%的S18溶解度。 [0118] The resulting brownstock Kappa number 11.4 is displayed, 1155ml / g viscosity, 4.6% of the solubility of S10 and S18 solubility of 3.6%. 反应具有40. 7%的产率。 The reaction having a yield of 40.7%. 当筛选时,混合物具有0. 07%的废料率,导致40. 6% 的筛选产率。 When screening with a mixture of 0.07% of the waste, resulting in a yield of 40.6% Screening of. 虽然CCE60允许蒸煮温度降低5°C,但是用于蒸煮的蒸煮时间和碱载量延长, 并且粗浆中的半纤维素含量与当使用CCE54时相比没有减少。 Although CCE60 allows reduced cooking temperature 5 ° C, but the cooking time of the cooking for loading and base extension, and the hemicellulose content of the pulp and the crude reduced compared to when not used CCE54.

[0119] 实施例7 [0119] Example 7

[0120] 分别在中和中使用CCE60和在蒸煮步骤中使用CCE60和HBL40组合的牛皮纸浆制法 [0120] In CCE60 were used and the method and use of the Kraft and HBL40 CCE60 in combination cooking step

[0121] 根据第七实施例,重复与实施例6中描述的相同的制浆工艺,除了具有每升40. 0g 的EA的更高度浓缩的热黑液("HBL40")用于蒸煮步骤。 [0121] According to the seventh embodiment, the same was repeated in the pulping process described in Example 6, except that a more highly concentrated hot black liquor ( "HBL40") with 40. 0g of EA per liter for the cooking step. 在该实施例中,由于更高度浓缩的黑液(HBL40)用作部分煮液,蒸煮步骤中的总碱载量增加到13.0%。 In this embodiment, since more highly concentrated black liquor (HBL40) used as part of cooking liquor, cooking step total base loading increased 13.0%.

[0122] 另外,虽然如实施例6中蒸煮温度也是155°C,但是蒸煮时间更短并比得上实施例2-5一一其中蒸煮在160°C进行一一中的蒸煮时间。 [0122] Further, as described in Example 6 although the cooking temperature is 155 ° C, but the cooking time is shorter and eleven comparable to Examples 2-5 wherein the cooking time of the cooking for eleven at 160 ° C. 结果,蒸煮反应的Η因子较低,在377。 As a result, the lower factor Η digestion reaction at 377. 中和物具有每升3. lg NaOH的ΕΑ,蒸煮混合物具有每升29. 5g NaOH的EoC。 And 3. lg NaOH per liter having the ΕΑ, having a cooked mixture of 29. 5g NaOH per liter EoC. 预水解的Ρ因子是301。 Prehydrolyzed Ρ factor is 301. 对于该实施例,木材上总当量有效碱载量分别是:中和期12%EA如NaOH,蒸煮期13%EA 如NaOH。 For this embodiment, the total equivalent effective timber loading base are: 12% EA and of such as NaOH, 13% EA as cooking of NaOH.

[0123] 得到的粗浆显示10. 3的卡伯值、1107ml/g的粘度、4. 1%的S10溶解度和3. 1%的S18溶解度。 [0123] The resulting brownstock Kappa number 10.3 is displayed, 1107ml / g viscosity, 4.1% of the solubility of S10 and S18 solubility of 3.1%. 反应具有40. 1%的产率。 The reaction having a yield of 40.1%. 当筛选时,混合物具有0. 09%的废料率,导致40. 0% 的筛选产率。 When screening with a mixture of 0.09% of the waste, resulting in a yield of 40.0% Screening of. 与实施例6相比,观察到如S18溶解度所证明的较低的半纤维素含量。 Example 6 compared with the observed low hemicellulose content as evidenced by a solubility S18. 因此, 蒸煮步骤中较高碱浓度的使用和碱性液体的组合似乎导致降低的半纤维素含量。 Thus, using a combination of a higher alkali concentration of alkaline liquid and the cooking step appears to result in a reduced content of hemicellulose.

[0124] 实施例8 [0124] Example 8

[0125] 在中和和蒸煮步骤中使用CCE70的牛皮纸浆制法 [0125] Use the Kraft process and CCE70 in the cooking step and

[0126] 根据第八实施例,重复与实施例7中描述的相同的制浆工艺,除了具有每升70gNa0H的EA的CCE滤液("CCE70")用于中和步骤,并且CCE70和HBL40的组合用于蒸煮步骤。 [0126] According to the eighth embodiment is repeated the same composition as in Example 7 described pulping process, in addition to the EA liter 70gNa0H CCE filtrate ( "CCE70") and a step for, and the CCE 70 and the HBL40 for cooking step. 另外,蒸煮期中有效碱载量是15%。 Further, the effective alkali cooking loading period was 15%.

[0127] 中和物具有11. 6的pH,蒸煮混合物具有每升36. lg NaOH的EoC。 [0127] and having a pH 11. 6, having a cooked mixture of 36. lg NaOH per liter EoC. 预水解的P因子是304,蒸煮反应的Η因子是301。 Prehydrolyzed factor P 304, Η digestion reaction factor is 301.

[0128] 得到的粗浆显示11. 0的卡伯值、1119ml/g的粘度、4. 0%的S10溶解度和2. 9%的S18溶解度。 [0128] The resulting brownstock Kappa number 11.0 is displayed, 1119ml / g viscosity, 4.0% of the solubility of S10 and S18 solubility of 2.9%. 反应具有40. 0%的产率。 The reaction having a yield of 40.0%. 当筛选时,混合物具有0. 13%的废料率,导致39. 9% 的筛选产率。 When screening with a mixture of 0.13% of the waste, resulting in a yield of 39.9% Screening of. 与实施例6和7相比,也观察到如S18溶解度所证明的较低的半纤维素含量。 Compared with Examples 6 and 7, also observed a lower hemicellulose content as evidenced by a solubility S18. 这加强了蒸煮步骤中较高碱浓度的使用和碱性液体的组合似乎导致降低的半纤维素含量。 This enhances the combination cooking step using higher alkali concentration of the alkaline liquid and appears to result in a reduced content of hemicellulose.

[0129] 实施例9 [0129] Example 9

[0130] 使用烧碱液垫的牛皮纸浆制法 [0130] The use of liquid caustic soda kraft pulp pads Method

[0131] 根据第九实施例,重复与实施例7中描述的相同的制浆工艺,除了对于中和步骤, 首先用一些量以如先前所描述的烧碱液垫形式的具有每升约125g NaOH的EA的烧碱液替换CCE60,之后是CCE滤液(CCE60)。 [0131] According to the ninth embodiment, the same was repeated in Example 7 described pulping process, except for the neutralization step, first with caustic soda solution in an amount of some form of mat as previously described having per liter about 125g NaOH EA liquid caustic soda is replaced CCE60, followed CCE filtrate (CCE60). 中和步骤中有效碱载量从12%增加到16%(4%由于烧碱液垫)。 Alkali neutralization step an effective amount of carrier from 12% to 16% (4% As caustic pad). 结果,蒸煮期中的有效碱载量从13%减少到11%。 As a result, the effective alkali cooking loading period is reduced from 13% to 11%.

[0132] 中和物具有每升4. 5g NaOH的EA,蒸煮混合物具有每升31. 7g NaOH的EoC。 [0132] and 4. 5g NaOH per liter having the EA, having a cooked mixture of 31. 7g NaOH per liter EoC. 预水解的P因子是303,蒸煮反应的Η因子是367。 Prehydrolyzed factor P 303, Η digestion reaction factor is 367.

[0133] 得到的粗浆显示9. 7的卡伯值、1103ml/g的粘度、4. 0%的S10溶解度和3. 0%的S18溶解度。 [0133] The resulting brownstock Kappa number 9.7 is displayed, 1103ml / g viscosity, 4.0% of the solubility of S10 and S18 solubility of 3.0%. 反应具有39. 9%的产率。 The reaction having a yield of 39.9%. 当筛选时,混合物具有0. 03%的废料率,导致39. 9% 的筛选产率。 When screening with a mixture of 0.03% of the waste, resulting in a yield of 39.9% Screening of. 也观察到如S18溶解度所证明的较低的半纤维素含量。 Also observed a low hemicellulose content as evidenced by a solubility S18. 卡伯值(KN)所测量的去木质作用程度对于相同水平的粘度(约ll〇〇ml/g)较低,这显示较好的工艺选择性,如粘度和卡伯值之间的比所反映的。 The degree of delignification Kappa Number (KN) measured (about ll〇〇ml / g) for the same level of low viscosity, which the display ratio is preferably between selective process, such as viscosity and Kappa number It reflected.

[0134] 实施例2至9中结果的比较(如图13A-13B所示的表中所总结的)提示半纤维素再沉积可通过中和步骤中烧碱液垫的使用和蒸煮步骤中CCE滤液和较高浓缩的黑液的组合的使用而减少。 Comparison of the results in [0134] Example 2-9 (Table 13A-13B shown in FIG summarized in) hemicellulose redeposition prompted by caustic in the neutralization step and the cooking step using a pad in the CCE filtrate and use a combination of high concentrated black liquor is reduced. 另外,较高浓缩的热黑液的使用导致较高的有效碱载量,这是常常期望的,导致较好的去木质作用选择性(对于相同的粘度水平较低的卡伯值)。 Further, the use of higher concentrated hot black liquor results in higher loading of effective alkali, which is often desirable, results in better delignification selectivity (for lower viscosity level of the same kappa number). 烧碱液垫以及CCE滤液和更浓缩的热黑液的组合的使用还可导致降低的蒸煮温度,而对蒸煮时间或浆质量没有不良影响。 Caustic pads and using the combined filtrate and is more concentrated CCE hot black liquor may also result in reduced cooking temperature, without adverse effects on the pulp quality or cooking time. 进行工业规模的进一步的实验以证实本发明的益处。 Further experiments on an industrial scale to confirm the benefits of the invention.

[0135] 实施例10 [0135] Example 10

[0136] 具有和没有烧碱液垫的工业规模牛皮纸浆制法 [0136] with and without caustic pad Kraft industrial scale method

[0137] 如与图4和5相关所通常描述地进行牛皮纸蒸煮工艺。 [0137] As for kraft cooking process associated with FIG. 5 and 4 as described generally. 如图6A和6B所显示的进行传统的中和步骤,并且如图7A-7C所显示的使用烧碱液垫进行改进的工艺。 6A and 6B is shown a conventional neutralization step, and as the use of caustic pad shown 7A-7C improved process. 在改进的工艺中,首先将40立方米具有每升110g NaOH的有效碱(EA)水平的烧碱液("WL110")在中和步骤开始时以180m3/小时的速度栗入消化器(13分钟的填充时期),之后是72. 9立方米具有大约每升60克NaOH的有效碱(EA)水平的CCE滤液。 In the improved process, the first having a 40 cubic meters per liter of effective alkali 110g NaOH (EA) of caustic level ( "WL110") at the start and at the step of 180m3 / hr Li into the digester (13 minutes filling period), followed by 72.9 cubic meters per liter with 60 grams of NaOH effective alkali (EA) level of CCE filtrate. 在该情况下通过加入浓缩的烧碱液将来自CCE清洗工艺(例如,图4中的工艺424)的CCE滤液的浓度从每升53-55克NaOH调节到每升60克NaOH,可被称作用烧碱液提浓的工艺。 In this case, by the addition of concentrated caustic soda solution from the CCE cleaning process (e.g., process 424 in FIG. 4) concentrations of CCE filtrate was adjusted from 53-55 g NaOH per liter to 60 grams per liter NaOH, action may be referred to concentration of caustic process. 中和步骤之后,遵循参考图10 描述的工业消化器操作顺序,首先将一些体积具有大约每升45克NaOH的有效碱(EA)水平的热黑液("HBL45"),然后是一些体积具有每升60克NaOH的有效碱(EA)水平的CCE碱性滤液加入以置换用过的中和液。 After the neutralization step, industrial digester operation sequence described with reference to FIG. 10 to follow, some of the first hot black liquor having a volume of about 45 grams per liter of NaOH effective alkali (EA) level ( "HBL45"), and having a volume of some 60 grams NaOH per liter of effective alkali (EA) of a basic level of CCE filtrate was added to replace the spent neutralizing solution. 然后将木肩在大约150-153Γ的温度蒸煮以获得目标Η 因子。 Then the wooden shoulder at a temperature of about 150-153Γ cooking to achieve the target Η factor. 对蒸煮条件进行小的调整以获得目标粘度。 Cooking conditions to make small adjustments to obtain the target viscosity.

[0138] 将各种实验条件和得到的浆质量总结在下面的表1中。 [0138] The various experimental conditions and the quality of the pulp obtained are summarized in Table 1 below.

Figure CN103003487BD00211

[0140] 表1 [0140] TABLE 1

[0141] 如上面的结果所显示的,在中和步骤中加入CCE滤液之前烧碱液垫的使用导致纤维上减少的半纤维素再沉积,如得到的浆中较低的S18溶解度所证明的(通过比较表1中的条目1-2与条目3-10)。 [0141] The results presented above, using the CCE filtrate prior to the addition of caustic neutralization step results in a reduction of the pad hemicellulose redeposition fibers, such as pulp obtained in a lower solubility evidenced S18 ( by comparing the entries in table 1 entries 3-10 and 1-2). 没有烧碱液垫,S18溶解度保持在3. 6%或以上。 No caustic pad, S18 solubility is maintained at 3.6% or more. 中和和蒸煮期间烧碱液垫,任选地与CCE滤液和黑液的使用,以及烧碱液提浓能够同时获得大约3. 0%或更小的S18溶解度和大致10和11之间的卡伯值(虽然取决于工艺参数,更宽的卡伯值范围可在约8和12之间),并且通常提供与传统的技术相比较高质量的浆产品。 And during the cooking liquid caustic soda and pad, optionally using a CCE filtrate and black liquor, and caustic to simultaneously concentrate obtained kappa number between about 3.0% or less and the solubility of S18 approximately 11 and 10 value (although depending on process parameters, a wider range of Kappa number may be between about 8 and 12), and is typically provided as compared with conventional techniques higher quality pulp product.

[0142] 图14是基于用于工业运转的量(与关于结合图6-9解释的蒸煮工艺描述的量相似)根据如本文公开的一个实施方式的工艺的S18对卡伯值的图。 [0142] FIG. 14 is based on the amount for industrial operation (similar to the amount on the cooking process explained in conjunction with Figures 6-9 described) S18 according to the process disclosed herein as an embodiment of the embodiment of FIG Kappa Number. 如图14所示,传统的蒸煮工艺的S18值(以百分比表示)和卡伯值由线1405表示,而使用如本文详述的烧碱液垫的工艺的S18和卡伯值由线1410表示。 Shown, the value of the conventional cooking process S18 in FIG. 14 (in percent) and the Kappa number represented by line 1405, the use of such caustic processes detailed herein mat Kappa number and S18 shown by line 1410. 当使用烧碱液垫时,值是优良的。 When using caustic pad, it is an excellent value. 特别地,基于本文公开的实施方式的工艺可产生处于3. 0范围里的S18值,提示低的残留的半纤维素含量。 In particular, based on the process embodiment disclosed herein can be produced in a range of 3.0 in the values ​​of S18, suggesting low residual hemicellulose content.

[0143] 上面提供的卡伯值和溶解度值表示在下游冷碱提取和漂白之前粗浆的蒸煮后特性。 [0143] Kappa number and solubility values ​​provided above were expressed and extracted after cooking characteristics before bleaching brownstock downstream cold caustic. 传统的冷碱提取进行之后,卡伯值将通常被降低到大约7至9,并且S18溶解度可以低于1. 7%并可达到1. 5%的范围。 After conventional cold alkaline extraction for Kappa number it will typically be reduced to about 7-9, and S18 may be below the solubility reached the range of 1.7% and of 1.5%. 这些值表示漂白之前具有大约97. 5%的α纤维素含量和具有有利的粘度特性的高度纯化的纸浆,其以有效和较进行优质浆加工的传统的方法更低成本的方式获得。 These values ​​represent approximately 97.5% of highly purified α-cellulose content and pulp having favorable viscosity characteristics prior to bleaching, which is more effective for high-quality pulp and conventional machining methods to obtain a more cost effective manner.

[0144] 另外,如本文描述的烧碱液垫的使用可避免或减少中和阶段期间的pH震荡,因为当富含半纤维素的CCE滤液液体遇到木肩时,它们将已经被烧碱液中和。 [0144] Further, as used herein, caustic pad described pH shock can be avoided or reduced during neutralization stage, because when a CCE filtrate hemicellulose rich liquid timber shoulder face, they have burnt lye with. 当被吸收到木肩空隙中时,烧碱液垫通常增加木肩或其它相似的有机材料的pH。 When absorbed into the wood shoulder voids, caustic shoulder pads are typically increase the pH of wood or other similar organic materials. 在预水解阶段之后但是在用半纤维素富集的CCE滤液液体首先遇到木肩之前,烧碱液垫提高木肩或其它相似的材料的pH。 After the prehydrolysis stage but before a hemicellulose rich liquid filtrate CCE first encounter shoulder wood, wood caustic to increase the pH shoulder pads or other similar materials. 通过该作用,避免或最小化pH震荡,并且来自再循环的CCE滤液的半纤维素将留在溶液中而不是被重吸收或沉积在浆上。 By this action, avoiding or minimizing the pH shock and hemicellulose filtrate from recycled CCE will remain in solution rather than being re-absorbed or deposited on the pulp. 这反过来增加浆粗浆的纯度并最后导致较高纯度的最终产品。 This in turn increases the purity of crude pulp slurry and finally led to a higher purity of the final product.

[0145] 虽然本文已描述了本发明的优选实施方式,但是保持在本发明的构思和范围内的许多改变是可能的。 [0145] While preferred embodiments have been described herein of the present invention, but retaining many variations within the spirit and scope of the present invention are possible. 在看过说明书和附图之后,这样的改变对本领域技术人员而言将变得明显。 After seeing the description and drawings, and changes to those skilled in the art will become apparent. 因此,本发明不受限制,除了在任何所附权利要求的精神和范围内。 Accordingly, the present invention is not limited except within the spirit and scope of any appended claims.

Claims (41)

  1. 1. 加工已在反应容器中进行预水解的含浆有机材料一一作为产生溶解浆的牛皮纸浆制法的部分--的方法,包括: 将由第一量的烧碱液组成的中和液加入所述反应容器,以用所述烧碱液仅仅部分地填充所述反应容器内的可用空间,同时保持所述容器在120°c和160°C之间的温度; 加入所述第一量的烧碱液之后,将除烧碱液外或仅部分含有烧碱液的新的碱性溶液加入所述反应容器以连同所述第一量的烧碱液构成存在于所述反应容器中的完全的中和液, 所述碱性溶液包括冷碱提取碱性滤液,所述冷碱提取碱性滤液未被处理以分解或去除半纤维素; 用一种或多种煮液置换所述中和液,所述煮液适合用于进行牛皮纸蒸煮; 在所述反应容器中蒸煮所述含浆有机材料;和从所述反应容器排出蒸煮的浆。 1. The pre-hydrolysis processing has been performed in the reaction vessel as a slurry containing an organic material to produce eleven kraft pulp partially dissolved slurry method - a method, comprising: by a first amount of a composition of caustic were added and the said reaction vessel, with the caustic to only partially fill the available space within the reaction vessel, said vessel while maintaining the temperature between 120 ° c and 160 ° C; the addition of the first amount of liquid caustic soda Thereafter, only a part of the new or basic solution containing caustic soda solution is added to the reaction vessel in addition to caustic soda solution constituting together with said first amount present in the reaction is complete and the liquid container, the said basic solution comprises a cold alkali extraction alkaline filtrate, cold alkali extraction of the alkaline filtrate untreated to decompose or remove hemicellulose; substituted with one or more cooking liquid and the liquid, the cooking liquor suitable for kraft cooking; cooking said reaction vessel in said slurry containing an organic material; and the digester slurry discharged from the reaction vessel.
  2. 2. 权利要求1所述的方法,其中所述烧碱液具有每升100和130克NaOH之间的有效碱水平。 The method according to claim 1, wherein said base has an effective level of liquid caustic soda between 100 and 130 grams per liter NaOH.
  3. 3. 权利要求1所述的方法,其中所述冷碱提取碱性滤液具有每升50和75克NaOH之间的有效碱水平。 The method according to claim 1, wherein said alkaline extraction filtrate cold alkali base has an effective level of between 50 and 75 grams per liter of NaOH.
  4. 4. 权利要求3所述的方法,其中所述冷碱提取碱性滤液具有每升60和68克NaOH之间的有效碱水平。 The method according to claim 3, wherein said alkaline extraction filtrate cold alkali base has an effective level of between 60 and 68 grams per liter of NaOH.
  5. 5. 权利要求3所述的方法,其中所述冷碱提取碱性滤液用烧碱液提浓以增加它的有效碱浓度。 The method according to claim 3, wherein said cold alkaline extraction with caustic alkaline solution concentrate the filtrate to increase its effective alkali concentration.
  6. 6. 权利要求1所述的方法,其中所述煮液包括代替烧碱液的冷碱提取碱性滤液,所述冷碱提取碱性滤液未被首先处理以分解或去除半纤维素。 6. The method according to claim 1, wherein said cooking liquor in place of caustic comprising the alkaline filtrate cold alkaline extraction, the alkaline filtrate cold alkaline extraction is not first treated to remove or decompose the hemicellulose.
  7. 7. 权利要求6所述的方法,其中所述冷碱提取碱性滤液具有每升50和75克NaOH之间的有效碱水平。 The method according to claim 6, wherein said alkaline extraction filtrate cold alkali base has an effective level of between 50 and 75 grams per liter of NaOH.
  8. 8. 权利要求6所述的方法,其中所述冷碱提取碱性滤液具有每升60和68克NaOH之间的有效碱水平。 The method according to claim 6, wherein said alkaline extraction filtrate cold alkali base has an effective level of between 60 and 68 grams per liter of NaOH.
  9. 9. 权利要求6所述的方法,其中所述冷碱提取碱性滤液用烧碱液提浓。 9. The method as claimed in claim 6, wherein said cold alkaline extraction with caustic alkaline filtrate concentrate.
  10. 10. 权利要求1所述的方法,其中将热黑液作为所述煮液之一连同冷碱提取碱性滤液用于所述蒸煮步骤,所述冷碱提取碱性滤液未被首先处理以分解或去除半纤维素。 10. The method of claim 1, wherein one of the hot black liquor as the cooking liquor along with the cold caustic extraction alkaline filtrate used in the cooking step, the alkaline filtrate cold alkaline extraction is not first treated to decompose or removal of hemicellulose.
  11. 11. 权利要求10所述的方法,其中所述热黑液具有每升38和50克NaOH之间的有效碱水平。 11. The method of claim 10, wherein the hot black liquor has an effective alkali level of between 38 and 50 grams per liter of NaOH.
  12. 12. 权利要求10所述的方法,其中所述热黑液具有每升40和45克NaOH之间的有效碱水平。 12. The method of claim 10, wherein the hot black liquor has an effective alkali level between 40 and 45 grams per liter of NaOH.
  13. 13. 权利要求12所述的方法,其中所述热黑液用烧碱液提浓以增加它的有效碱浓度。 13. The method of claim 12, wherein said hot black liquor concentrate with caustic to increase its effective alkali concentration.
  14. 14. 权利要求1所述的方法,其中将所述蒸煮的浆进行冷碱提取阶段之后,产生具有超过98%的α含量的纯化的浆。 14. After the process of claim 1 wherein the cooked slurry to a cold alkali extraction stage, to produce a purified slurry having a content α of more than 98%.
  15. 15. 权利要求14所述的方法,其中所述纯化的浆具有7和9之间的卡伯值。 15. The method of claim 14, wherein said purified slurry has a kappa number of between 7 and 9.
  16. 16. 权利要求1所述的方法,其中所述第一量的烧碱液提供至少10%的中和期中使用的总有效碱载量。 16. The method of claim 1, wherein said first amount of caustic alkali to provide an effective total amount of at least 10% of the carrier and the period of use.
  17. 17. 权利要求1所述的方法,其中所述第一量的烧碱液提供13%和25%之间的中和期中使用的总有效碱载量。 17. The method of claim 1, wherein said first amount of caustic alkali to provide an effective loading of the total period of between 13% and 25% and used.
  18. 18. 权利要求1所述的方法,其中所述含浆有机材料包括桉树。 18. The method of claim 1, wherein said organic-containing material comprises a slurry of Eucalyptus.
  19. 19. 用于牛皮纸浆制法的产生溶解浆的浆加工方法,包括: 将含浆有机材料加入消化器; 对所述消化器中的所述含浆有机材料进行预水解; 将由第一量的烧碱液组成的初始量的中和液作为中和液加入所述消化器的底部以部分地填充所述消化器中的剩余空间,以提高所述消化器内的pH水平和减少中和阶段期间pH震汤; 加入所述第一量的烧碱液之后,将包括第一量的冷碱提取碱性滤液的溶液加入以从所述底部填充所述消化器以利用所述第一量的烧碱液和加入的溶液的组合进行所述消化器的内含物的中和,所述冷碱提取碱性滤液没有首先被处理以分解或去除半纤维素; 用一种或多种煮液置换所述中和液,所述煮液包括至少用另外量的烧碱液提浓的热黑液,之后是第二量的冷碱提取碱性滤液; 在所述消化器中蒸煮所述含浆有机材料;和从所述消化器排出 19. A method of producing kraft pulp process of dissolving pulp production method, comprising: a digester slurry containing an organic material is added; the said digester slurry containing the organic material prehydrolysis; by the first amount the initial amount of the liquid consisting of caustic soda solution and a neutralizing solution are added to the digester bottom to partially fill the remaining space in the digester to increase and decrease during the pH level within the digester stage and tremors pH; after addition of the first amount of liquid caustic soda, the base comprising a first amount of cold extraction of the alkaline filtrate was added to fill the digester from the bottom of the first to use an amount of caustic and combinations of the solutions were added to the digester and the contents of the alkaline filtrate cold alkaline extraction is not first treated to decompose or remove hemicellulose; substituted with one or more of the cooking liquor neutralizing solution, with the cooking liquor comprising at least an additional amount of caustic soda solution concentrate the hot black liquor, followed by a second amount of a basic alkaline extraction filtrate cold; cooking the slurry containing the organic material in the digester; and discharged from the digester 煮的浆。 Boiled pulp.
  20. 20. 权利要求19所述的方法,其中所述烧碱液具有每升100和130克NaOH之间的有效碱水平。 20. The method according to claim 19, wherein the caustic alkali having an effective level of between 100 and 130 grams per liter NaOH.
  21. 21. 权利要求20所述的方法,其中所述第一量的烧碱液提供至少10%的中和期间使用的总有效碱载量。 21. The method according to claim 20, wherein said first amount of caustic alkali to provide an effective carrier of the total amount of at least 10% during the neutralization.
  22. 22. 权利要求21所述的方法,其中所述第一量的烧碱液提供13%和25%之间的中和期间使用的总有效碱载量。 22. The method according to claim 21, wherein said first amount of caustic alkali to provide an effective total amount of the carrier and the period between 13% and 25%.
  23. 23. 权利要求20所述的方法,其中所述第一量的冷碱提取碱性滤液具有每升50和75 克NaOH之间的有效碱水平。 23. The method according to claim 20, wherein said first amount of cold caustic extraction alkaline filtrate base has an effective level between 50 and 75 grams per liter of NaOH.
  24. 24. 权利要求20所述的方法,其中所述第一量的冷碱提取碱性滤液具有每升60和68 克NaOH之间的有效碱水平。 24. The method according to claim 20, wherein said first amount of cold caustic extraction alkaline filtrate base has an effective level between 60 and 68 grams per liter of NaOH.
  25. 25. 权利要求24所述的方法,其中所述第一量的冷碱提取碱性滤液用烧碱液提浓。 25. The method according to claim 24, wherein said first amount of cold alkaline extraction with caustic alkaline filtrate concentrate.
  26. 26. 权利要求19所述的方法,其中所述第二量的冷碱提取碱性滤液具有每升50和75 克NaOH之间的有效碱水平。 26. The method according to claim 19, wherein said second amount of cold caustic extraction alkaline filtrate base has an effective level between 50 and 75 grams per liter of NaOH.
  27. 27. 权利要求26所述的方法,其中所述第二量的冷碱提取碱性滤液具有每升60和68 克NaOH之间的有效碱水平。 27. The method according to claim 26, wherein said second amount of cold caustic extraction alkaline filtrate base has an effective level between 60 and 68 grams per liter of NaOH.
  28. 28. 权利要求27所述的方法,其中所述第二量的冷碱提取碱性滤液用烧碱液提浓。 28. The method according to claim 27, wherein said second amount of cold alkaline extraction with caustic alkaline filtrate concentrate.
  29. 29. 权利要求19所述的方法,其中所述热黑液占总煮液的至少一半。 29. The method according to claim 19, wherein said hot black liquor at least half of the total cooking liquor.
  30. 30. 权利要求19所述的方法,其中所述热黑液具有每升38和50克NaOH之间的有效碱水平。 30. The method of claim 19, wherein the hot black liquor has an effective alkali level of between 38 and 50 grams per liter of NaOH.
  31. 31. 权利要求19所述的方法,其中所述热黑液具有每升40和45克NaOH之间的有效碱水平。 31. The method according to claim 19, wherein the hot black liquor has an effective alkali level between 40 and 45 grams per liter of NaOH.
  32. 32. 权利要求31所述的方法,其中所述热黑液用烧碱液或冷碱提取碱性滤液提浓。 32. The method according to claim 31, wherein said hot black liquor filtrate is extracted with caustic soda solution or alkaline cold alkali concentrate.
  33. 33. 权利要求19所述的方法,其中将所述蒸煮的浆进行冷碱提取阶段之后,产生具有超过97%的α含量的纯化的浆。 33. The method of claim 19, wherein the cooked pulp after cold alkaline extraction stage, to produce a purified slurry having a content α of more than 97%.
  34. 34. 权利要求19所述的方法,其中所述蒸煮的浆具有8和12之间的卡伯值。 34. The method according to claim 19, wherein the cooked pulp with kappa number of between 8 and 12.
  35. 35. 权利要求19所述的方法,其中所述含浆有机材料包括桉树。 35. The method according to claim 19, wherein said organic-containing material comprises a slurry of Eucalyptus.
  36. 36. 结合牛皮纸浆制法用于产生溶解浆的方法,包括: 将木素纤维素材料置于反应容器中并进行预水解; 将中和液加入所述反应容器,所述中和液包括:(i)作为垫的具有每升100和130克NaOH之间的有效碱水平的第一量的烧碱液以从底部部分地填充所述反应容器中的可用空间,和(ii)第一量的不同的溶液,其在所述第一量的烧碱液之后引入并包括具有每升60和68克NaOH之间的有效碱水平的碱性滤液,在用所述中和液进行中和中所述第一量的烧碱液包括10%和30%之间的总有效碱载量; 用煮液置换所述反应容器中的所述中和液,所述煮液包括具有每升30和50克NaOH之间的有效碱水平的热黑液和具有每升50和75克NaOH之间的有效碱水平的冷碱提取碱性滤液,所述冷碱提取碱性滤液未被首先处理以分解或去除半纤维素; 在所述反应容器中蒸煮含浆有机材料;和从所述反 36. A method in conjunction with the Kraft method for producing dissolving pulp, comprising: the lignocellulosic material into a reaction vessel and subjected to pre-hydrolysis; The neutralized solution was added to the reaction vessel, and the liquid comprises: (i) as a first amount of a caustic alkali having an effective level of between 100 and 130 grams per liter NaOH pad to the available space in the reaction vessel is filled from the bottom part, and (ii) a first amount of a different solutions, which include basic and the filtrate was introduced into a base having an effective level of between 60 and 68 grams per liter of NaOH, after the first amount of liquid caustic soda, carried out with the neutralization solution and the a first amount of a caustic alkali include total effective loading between 10% and 30%; with cooking liquor displacement of said reaction vessel and a liquid, having a cooking liquor comprising per liter 30 g NaOH and 50 effective alkali level between the cold and hot black liquor has an effective alkali base level between 50 and 75 grams per liter NaOH alkaline extraction filtrate, cold alkali extraction of the alkaline filtrate not first treated to decompose or remove half cellulose; in the reaction vessel digester slurry containing an organic material; and from the counter 容器排出蒸煮的浆,所述蒸煮的浆具有依据S18溶解度测量的3. 1%或更少的残留半纤维素含量。 Discharging pulp cooking container, the cooking pulp having 3.1% less of residual hemicellulose content or S18 according to the solubility measurements.
  37. 37. 权利要求36所述的方法,其中所述木素纤维素材料包括硬木材。 37. The method according to claim 36, wherein said lignocellulosic material comprises hardwood.
  38. 38. 权利要求36所述的方法,其中蒸煮期间所述反应容器的温度在150和153摄氏度之间。 38. The method of claim 36, wherein the temperature of the reaction vessel during cooking between 150 and 153 degrees Celsius.
  39. 39. 权利要求36所述的方法,其中所述蒸煮的衆具有大于8. 0的卡伯值。 39. The method according to claim 36, wherein said cooking Kappa all having a value greater than 8.0 in.
  40. 40. 权利要求36所述的方法,其中所述煮液用烧碱液提浓。 40. The method of claim 36, wherein said cooking liquor with a caustic soda solution concentrate.
  41. 41. 权利要求36所述的方法,其中所述木素纤维素材料包括桉树。 41. The method of claim 36, wherein said lignocellulosic material comprises eucalyptus.
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