RU2017141513A - Cellulose product with an alpha cellulose content of 98.5% and above and an industrial method for its production - Google Patents

Cellulose product with an alpha cellulose content of 98.5% and above and an industrial method for its production Download PDF

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RU2017141513A
RU2017141513A RU2017141513A RU2017141513A RU2017141513A RU 2017141513 A RU2017141513 A RU 2017141513A RU 2017141513 A RU2017141513 A RU 2017141513A RU 2017141513 A RU2017141513 A RU 2017141513A RU 2017141513 A RU2017141513 A RU 2017141513A
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Prior art keywords
cellulose
product
alpha
oxidative
mass
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RU2017141513A
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Russian (ru)
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RU2017141513A3 (en
RU2703250C2 (en
Inventor
Евгений Александрович Луканин
Данил Александрович Егоров
Original Assignee
Евгений Александрович Луканин
Данил Александрович Егоров
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Priority to RU2017141513A priority Critical patent/RU2703250C2/en
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Publication of RU2017141513A3 publication Critical patent/RU2017141513A3/ru
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/08Alkali cellulose
    • 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
    • D21C9/00After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10Bleaching ; Apparatus therefor
    • 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
    • D21C9/00After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10Bleaching ; Apparatus therefor
    • D21C9/16Bleaching ; Apparatus therefor with per compounds
    • D21C9/163Bleaching ; Apparatus therefor with per compounds with peroxides

Claims (8)

1. Льняной целлюлозный продукт востребованный в химической, целлюлозно-бумажной, пищевой и других отраслях промышленности характеризующийся высокими показателями белизны, смачиваемостью и низким содержанием золы, отличающийся тем, что показатель альфа-целлюлозы достигает 98,5% и выше, количество лигниносодержащих примесей составляет 0,1%, имеет степень полимеризации со значением выше 1100 и высокий показатель вязкости - 228 мПа/с.1. Flax pulp product demanded in chemical, pulp and paper, food and other industries characterized by high whiteness, wettability and low ash content, characterized in that the alpha cellulose reaches 98.5% and higher, the amount of ligno-containing impurities is 0 , 1%, has a degree of polymerization with a value above 1100 and a high viscosity index of 228 mPa / s. 2. Продукт по п. 1, отличающийся тем, что в качестве целлюлозосодержащего продукта используют полученную из льна хлопкоподобную массу, следующих свойств: не прядомые волокна с линейной плотностью - 0,21-0,97 текс и массовой длиной 7,5 мм, массовой долей костры и сорных примесей - 0,5%, влажностью - менее 14%.2. The product according to claim 1, characterized in that the quality of the cellulose-containing product is cotton yarn obtained from flax, the following properties: non-spun fibers with a linear density of 0.21-0.97 tex and a mass length of 7.5 mm, mass shares of fires and weed impurities - 0.5%, humidity - less than 14%. 3. Способ промышленного получения из льняного волокна целлюлозного продукта с высоким показателем альфа-целлюлозы путем механической обработки, промывки, кипячения, деструктуризации лигноуглеводной сетки, первой промывки водой, отжима на центрифуге и сушки, отличающийся тем, что делигнификацию проводят последовательной обработкой волокнистой массы в щелочном растворе, температура которого 50°С, окислительную варку осуществляют при температуре раствора 120°С.3. Method for industrial production of flax fiber cellulose product with a high alpha-cellulose rate by mechanical treatment, washing, boiling, destructurization of the lignohydrocarbon mesh, first washing with water, spinning and drying, characterized in that the delignification is carried out by sequential processing of the fibrous mass in alkaline a solution whose temperature is 50 ° C, oxidative boiling is carried out at a solution temperature of 120 ° C. 4. Способ по п. 3, отличающийся тем, что раствор для нейтрализации лигниносодержащих компонентов, содержит следующие активные вещества: гидрооксид натрия - 5-10 г/л, поверхностно-активные вещества - 2,7-2,9 г/л, при соблюдении температуры кипения до 95-100°С в течении 30 минут.4. The method according to p. 3, characterized in that the solution for neutralizing the lignin-containing components contains the following active substances: sodium hydroxide - 5-10 g / l, surfactants - 2.7-2.9 g / l, with observance of the boiling point to 95-100 ° C for 30 minutes. 5. Способ по п. 3, отличающийся тем, что процесс окислительной варки протекает в течении 60 минут в растворе с высокой концентрацией пероксида водорода: пероксид водорода - 18,4 г/л, метасиликат натрия -13 г/л, сульфат магния - 0,4 г/л, гидрооксид натрия - 4,8 г/л.5. The method according to p. 3, characterized in that the process of oxidative cooking takes 60 minutes in a solution with a high concentration of hydrogen peroxide: hydrogen peroxide - 18.4 g / l, sodium metasilicate -13 g / l, magnesium sulfate - 0 , 4 g / l, sodium hydroxide - 4.8 g / l. 6. Способ по п. 3, отличающийся тем, что процесс окислительной варки осуществляется в специальном агрегате химической обработки льняного волокна.6. The method according to p. 3, characterized in that the process of oxidative cooking is carried out in a special unit of chemical processing of flax fiber. 7. Способ по п. 3, отличающийся тем, что по окончанию варки целлюлозосодержащую массу подают на специально оборудованную сушильную установку, затем волокно с влажностью менее 20% направляют на «измельчитель» для получения необходимой длины волокон.7. The method according to p. 3, characterized in that at the end of the cooking, the cellulose-containing mass is fed to a specially equipped drying unit, then the fiber with a moisture content of less than 20% is sent to the “chopper” to obtain the required length of fibers. 8. Способ по п. 3, отличающийся тем, что повышенное содержание альфа-целлюлозы до 98,5% и выше достигается путем увеличения концентрации пероксида водорода в растворах для окислительной обработки и варки волокнистой массы, вместо уже известного использования соединений серы и хлора, отрицательно воздействующих на экологию.8. The method according to p. 3, characterized in that the increased content of alpha-cellulose to 98.5% and above is achieved by increasing the concentration of hydrogen peroxide in solutions for oxidative processing and pulping, instead of the already known use of sulfur and chlorine compounds, negatively affecting the ecology.
RU2017141513A 2017-11-28 2017-11-28 Cellulose product with alpha-cellulose content of 98,5 % and higher and industrial method for production thereof RU2703250C2 (en)

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WO2021256911A1 (en) * 2020-06-19 2021-12-23 Айнур Алимбаевна ИБЖАНОВА Method for producing cellulose from rice straw and for producing paper from same
RU2768635C1 (en) * 2021-07-16 2022-03-24 Публичное акционерное общество «Татнефть» имени В.Д. Шашина Method for obtaining flaxseed pulp
CN115637601B (en) * 2022-10-10 2023-09-29 浙江理工大学 Method for green extraction of high-purity cellulose nanofiber from shaddock ped

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US6699358B1 (en) * 1998-05-15 2004-03-02 National Silicates Partnership Method for brightening chemical pulp with hydrogen peroxide using a magnesium compound in silicate solution
DE102011004483A1 (en) * 2011-02-21 2012-08-23 BSH Bosch und Siemens Hausgeräte GmbH Tool and drive device for a motor-driven kitchen appliance
RU2487206C1 (en) * 2011-10-18 2013-07-10 Общество с ограниченной ответственностью "Целлюлозная компания" Method of production of cellulose
RU2507331C1 (en) * 2013-02-05 2014-02-20 Открытое акционерное общество "ЦЕНТРАЛЬНЫЙ НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ КОМПЛЕКСНОЙ АВТОМАТИЗАЦИИ ЛЕГКОЙ ПРОМЫШЛЕННОСТИ" Method for producing cellulose

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