CN102212582B - Method for preparing cellulose from straws by using biological method - Google Patents
Method for preparing cellulose from straws by using biological method Download PDFInfo
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- CN102212582B CN102212582B CN 201110090365 CN201110090365A CN102212582B CN 102212582 B CN102212582 B CN 102212582B CN 201110090365 CN201110090365 CN 201110090365 CN 201110090365 A CN201110090365 A CN 201110090365A CN 102212582 B CN102212582 B CN 102212582B
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Abstract
The invention discloses a method for preparing cellulose from straws by using a biological method, and belongs to the technical field of biochemical industry. The method comprises the following steps of: removing dust in the straws, crushing the straws to be 20 to 40 meshes, adding the crushed straws into a reaction tank, adding water in an amount which is 4 to 5 times weight of the straws, conveying the straws to a high-concentration mill after the straws are soaked for 1 hour, and pulping; and adding the pulp into a reaction tank, adding a composite biocatalyst, mixing uniformly, heating to the temperature of between 60 and 80 DEG C, and reacting for 1 to 3 hours; and removing impurities to obtain coarse pulp by screening after the pulp is discharged, delivering the coarse pulp to a low-concentration mill, pulping, performing dehydration through a pulp extruder, performing defibering by using a defibering machine, drying in a roller dryer, drying and crushing to obtain the straw cellulose. Because the straws are used as a raw material for preparing the cellulose, the cost is reduced by 50 percent compared with the traditional process for extracting the cellulose; and the biological method has no pollution and zero release, and protects the environment.
Description
Technical field
The present invention relates to belong to technical field of biochemical industry from the standby cellulosic method of straw.
Background technology
Agricultural crop straw is the great renewable resources of occurring in nature quantity.The annual agricultural crop straw output of China reaches 700,000,000 tons more than, but these resource long-terms reasonably developed, all the other are all burned as the feed except minute quantity, this is the severe contamination that the huge waste of natural resource has been caused again environment.According to statistics, present straw utilization rate is 33%, but only accounts for 2.6% through what utilize after certain technical finesse, and all the other major parts just act as a fuel and wait directly utilization.Along with the decline of oil coal reserves, particularly along with growing interest and the attention of various countries' environmental pollution problem, the application that people transfer to Research Emphasis natural polymer gradually comes up in recent years.Agricultural crop straw is wherein a kind of, stalk is fully utilized refer to by physical chemistry or biological method stalk directly be carried out trans-utilization or its biomass is carried out comprehensive complete utilization.
Stalk (bagasse, energy grass, cotton stalk, reed, paddy and wheat, corn etc.) cellulose approximately 40%, Mierocrystalline cellulose is renewable resources the abundantest on the earth, and has inexpensive, degradability and ecotope do not produced the advantages such as pollution.Mierocrystalline cellulose is a poly-hydroxy glucose polymer, after specific physics or chemical modification, have different functional performances, can powdery, the multi-form appearance such as sheet, film, fiber and solution, therefore have the popularity of handiness and application with the functional materials of Mierocrystalline cellulose exploitation.The products such as paper pulp, alcohol fuel, degradable dinner set, carboxymethyl cellulose, Microcrystalline Cellulose, cellulose acetate be can produce, paper industry, plastics industry, alcohol fuel, medicine industry, foodstuffs industry, building materials industry, ceramic industry, petroleum industry, textile industry etc. are widely used in.
Past is to use chemical process from the stalk production of cellulose, and adopting chemical process one is to cause serious pollution, the 2nd, and cost is high.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of with biological process from the standby cellulosic method of straw, the method is not only polluted, and cost (reducing cost 50% than chemical process), is a kind of efficient, cleaning, cheap High biotechnology.
Technical scheme of the present invention is: a kind of with biological process from the standby cellulosic method of straw, it is characterized in that, with the stalk dedusting, be crushed to the 20-40 order, add in the reaction tank, then add stalk weight 4-5 water doubly, soak 1 hour dense mill defibrination of laggard height; Be added to behind the defibrination in the retort, add again the compound bio catalyzer, after mixing, be warming up to 60-80 ℃, reacted 1-3 hour; Through getting slightly slurry behind the screening removal impurity, thick slurry advances to hang down dense mill defibrination, then dewaters through pulp-extruding machine, discongests with fluffer again, advances roller dryer and carries out drying, pulverizes to get stalk cellulose after the drying behind the blowing; The add-on of described compound bio catalyzer is the compound bio catalyzer that adds the 0.10-0.30 parts by weight in per 100 parts by weight stalks.
Used compound bio catalyzer is mixed by the raw material of following portions by weight and forms: laccase 2-5, catalase-3-6, the hydrogen peroxide 1-5 of massfraction 35%, water 5-300.Used stalk is the stalk of the farm crop such as sugarcane, energy grass, cotton, reed, paddy and wheat, corn.
This project meets State Council " Office of the State Council sends out file [2008] No. 105: the General Office of the State Council is about accelerating to advance the suggestion of agricultural crop straw comprehensive utilization " requirement, accelerate the agricultural crop straw comprehensive utilization, be conducive to promote growth of agricultural efficiency, increasing peasant income and rural ecological civilization construction, promote resource-conserving and environment-friendly society's construction.
The invention has the beneficial effects as follows: the present invention's stalk is that raw material prepares Mierocrystalline cellulose, (cost of the present invention is about 1800 yuan/tons to extract Mierocrystalline cellulose reduction cost 50% than traditional technology, traditional technology is about 3600 yuan/tons) and purity high (the prepared cellulosic purity of the present invention is more than 99%, and the prepared cellulosic purity of traditional technology is about 80%); And biological process is pollution-free, zero release, protection of the environment.This project is take stalk as raw material, with biological process from the stalk production of cellulose, have prescription rationally, technique is simple, advanced and mature; but the advantage of continuous operation is with reaching constantly zero release, protection of the environment; reduce and pollute, energy-saving and emission-reduction meet the requirement of recycling economy.
Embodiment
In conjunction with example the present invention is illustrated further:
Embodiment one:
200 kilograms of straws through dedusting, be crushed to 20 orders, add in the reaction tank, then the water that adds 800 kilograms, soaked 1 hour, advance high dense mill defibrination, be added to the compound bio catalyzer that adds again 0.20 kilogram in the retort behind the defibrination, after mixing, be warming up to 70 ℃, reacted 2 hours, starch through getting slightly behind the screening removal impurity behind the blowing, thick slurry advances to hang down dense mill defibrination, then dewater, discongest with fluffer again through pulp-extruding machine, advance roller dryer and carry out drying, pulverize to get 80 kilograms of stalk celluloses after the drying.
Used compound bio catalyzer is mixed by mass fraction by following raw material and forms: laccase 20 grams, catalase-3 0 gram, hydrogen peroxide 50 grams of 35% (wt/wt), water 100 grams.
Embodiment two:
100 kilograms of rice straws through dedusting, be crushed to 40 orders, add in the reaction tank, then the water that adds 500 kilograms, soaked 3 hours, advance high dense mill defibrination, be added to the compound bio catalyzer that adds again 0.15 kilogram in the retort behind the defibrination, after mixing, be warming up to 75 ℃, reacted 1.5 hours, starch through getting slightly behind the screening removal impurity behind the blowing, thick slurry advances to hang down dense mill defibrination, then dewater, discongest with fluffer again through pulp-extruding machine, advance roller dryer and carry out drying, pulverize to get 43 kilograms of stalk celluloses after the drying.
Used compound bio catalyzer is mixed by mass fraction by following raw material and forms: laccase 30 grams, catalase-3 0 gram, hydrogen peroxide 30 grams of 35% (wt/wt), water 60 grams.
Embodiment three:
300 kilograms of bagasse through dedusting, be crushed to 30 orders, add in the reaction tank, then the water that adds 1500 kilograms, soaked 2 hours, advance high dense mill defibrination, be added to the compound bio catalyzer that adds again 0.4 kilogram in the retort behind the defibrination, after mixing, be warming up to 80 ℃, reacted 3 hours, starch through getting slightly behind the screening removal impurity behind the blowing, thick slurry advances to hang down dense mill defibrination, then dewater, discongest with fluffer again through pulp-extruding machine, advance roller dryer and carry out drying, pulverize to get 135 kilograms of stalk celluloses after the drying.
Used compound bio catalyzer is mixed by mass fraction by following raw material and forms: laccase 30 grams, catalase 40 grams, hydrogen peroxide 40 grams of 35% (wt/wt), water 290 grams.
Embodiment four:
200 kilograms of cotton stalks through dedusting, be crushed to 40 orders, add in the reaction tank, then the water that adds 1000 kilograms, soaked 8 hours, advance high dense mill defibrination, be added to the compound bio catalyzer that adds again 0.3 kilogram in the retort behind the defibrination, after mixing, be warming up to 80 ℃, reacted 3 hours, starch through getting slightly behind the screening removal impurity behind the blowing, thick slurry advances to hang down dense mill defibrination, then dewater, discongest with fluffer again through pulp-extruding machine, advance roller dryer and carry out drying, pulverize to get 100 kilograms of stalk celluloses after the drying.
Used compound bio catalyzer is mixed by mass fraction by following raw material and forms: laccase 20 grams, catalase-3 0 gram, hydrogen peroxide 50 grams of 35% (wt/wt), water 200 grams.
Embodiment five:
400 kilograms of corn stalks through dedusting, be crushed to 30 orders, add in the reaction tank, then the water that adds 2000 kilograms, soaked 5 hours, advance high dense mill defibrination, be added to the compound bio catalyzer that adds again 0.4 kilogram in the retort behind the defibrination, after mixing, be warming up to 80 ℃, reacted 2 hours, starch through getting slightly behind the screening removal impurity behind the blowing, thick slurry advances to hang down dense mill defibrination, then dewater, discongest with fluffer again through pulp-extruding machine, advance roller dryer and carry out drying, pulverize to get 180 kilograms of stalk celluloses after the drying.
Used compound bio catalyzer is mixed by mass fraction by following raw material and forms: laccase 40 grams, catalase 50 grams, hydrogen peroxide 50 grams of 35% (wt/wt), water 260 grams.
Embodiment six:
200 kilograms of energy grass through dedusting, be crushed to 40 orders, add in the reaction tank, then the water that adds 800 kilograms, soaked 6 hours, advance high dense mill defibrination, be added to the compound bio catalyzer that adds again 0.2 kilogram in the retort behind the defibrination, after mixing, be warming up to 75 ℃, reacted 1 hour, starch through getting slightly behind the screening removal impurity behind the blowing, thick slurry advances to hang down dense mill defibrination, then dewater, discongest with fluffer again through pulp-extruding machine, advance roller dryer and carry out drying, pulverize to get 86 kilograms of stalk celluloses after the drying.
Used compound bio catalyzer is mixed by mass fraction by following raw material and forms: laccase 40 grams, catalase 60 grams, hydrogen peroxide 20 grams of 35% (wt/wt), water 80 grams.
Claims (1)
1. one kind prepares cellulosic method with biological process from straw, it is characterized in that, with the straw dedusting, be crushed to the 20-40 order, adds in the reaction tank, then adds straw weight 4-5 water doubly, soaks 1 hour dense mill defibrination of laggard height; Be added to behind the defibrination in the retort, add again the compound bio catalyzer, after mixing, be warming up to 60-80 ℃, reacted 1-3 hour; Remove behind the impurity to get slurry slightly through screening behind the blowing, thick slurry advances hang down dense mill defibrination, then through the pulp-extruding machine dehydration, discongests with fluffer again, advances roller dryer and carries out drying, pulverizes after the drying that to get straw fiber plain; The add-on of described compound bio catalyzer is the compound bio catalyzer that adds the 0.10-0.30 parts by weight in per 100 parts by weight straws; Used compound bio catalyzer is mixed by the raw material of following portions by weight and forms: laccase 2-5, catalase-3-6, the hydrogen peroxide 1-5 of massfraction 35%, water 5-300.
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| CN 201110090365 CN102212582B (en) | 2011-04-12 | 2011-04-12 | Method for preparing cellulose from straws by using biological method |
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| CN 201110090365 CN102212582B (en) | 2011-04-12 | 2011-04-12 | Method for preparing cellulose from straws by using biological method |
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| CN102212582B true CN102212582B (en) | 2013-04-03 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102746056B (en) * | 2011-10-18 | 2014-02-26 | 山东大自然农业科技开发有限公司 | Process for co-producing functional bio-organic fertilizer and plant fibers by using corn straws |
| US20150247117A1 (en) * | 2012-09-17 | 2015-09-03 | Beijing Tian'an Bioscience & Technology Co., Ltd. | Acinetobacter lwoffii strain, CGMCC#5973 and Its Application Thereof |
| WO2014040381A1 (en) * | 2012-09-17 | 2014-03-20 | 北京天安生物科技有限公司 | Biological bacterial solution and application thereof |
| CN103174047A (en) * | 2013-04-16 | 2013-06-26 | 枣庄鸿润纸业有限公司 | Process for refining wheat-straw pulp by hydrogen peroxide enzyme method |
| CN109695172A (en) * | 2018-12-28 | 2019-04-30 | 江苏秸宝生物质新材料有限公司 | Straw biological mechanical pulp-making method and equipment |
| CN113981726A (en) * | 2021-10-29 | 2022-01-28 | 泰安天兴木业科技有限公司 | Method for producing needle-leaved refined cellulose by biological defibering |
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| EP0060467B1 (en) * | 1981-03-16 | 1985-08-28 | Albin Dr.-Ing. Eisenstein | Production of cellulose from wood or other lignocellulosic plants by microbiological decomposition of lignocellulose |
| CN101230547B (en) * | 2008-02-26 | 2012-03-14 | 广西壮族自治区中医药研究院 | Method for preparing cellulose and carboxymethyl cethylose by wood fibre material |
| CN101748633B (en) * | 2008-12-19 | 2012-07-04 | 北京英力生科新材料技术有限公司 | Novel cellulose extraction process |
| CN101519852B (en) * | 2009-01-15 | 2011-04-27 | 中国科学技术大学 | Method for separating cellulose from straws and getting cellulose solution |
| CN101481423B (en) * | 2009-02-12 | 2011-03-16 | 王美岭 | Method for preparing polyanion cellulose from bagasse |
| CN102146424B (en) * | 2010-02-10 | 2013-03-20 | 无锡市金坤生物工程有限公司 | Method for preparing cellulose by degrading straws with complex enzyme |
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Owner name: INNER MONGOL YINGNUOTAI BIOTECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WANG MEILING Effective date: 20150104 |
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Free format text: CORRECT: ADDRESS; FROM: 250100 JINAN, SHANDONG PROVINCE TO: 028000 TONGLIAO, INNER MONGOLIA AUTONOMOUS REGION |
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Effective date of registration: 20150104 Address after: 028000 B7, -132, Jin Du Xincheng District, Tongliao economic and Technological Development Zone, the Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Yingnuotai Biological Technology Co. Ltd. Address before: 402, room 3, unit 18-1, MT Da Nan Road, Licheng District, Shandong, Ji'nan 250100, China Patentee before: Wang Meiling |