CN113957737A - Pollution-free pulping process by straw biological method - Google Patents
Pollution-free pulping process by straw biological method Download PDFInfo
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- CN113957737A CN113957737A CN202111328953.7A CN202111328953A CN113957737A CN 113957737 A CN113957737 A CN 113957737A CN 202111328953 A CN202111328953 A CN 202111328953A CN 113957737 A CN113957737 A CN 113957737A
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- 239000010902 straw Substances 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004537 pulping Methods 0.000 title claims abstract description 31
- 238000010170 biological method Methods 0.000 title claims abstract description 11
- 238000011282 treatment Methods 0.000 claims abstract description 37
- 239000002002 slurry Substances 0.000 claims abstract description 30
- 241000894006 Bacteria Species 0.000 claims abstract description 25
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 17
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 230000001954 sterilising effect Effects 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000004898 kneading Methods 0.000 claims abstract description 4
- 229940088598 enzyme Drugs 0.000 claims description 31
- 102000004190 Enzymes Human genes 0.000 claims description 29
- 108090000790 Enzymes Proteins 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 102000005575 Cellulases Human genes 0.000 claims description 18
- 108010084185 Cellulases Proteins 0.000 claims description 18
- 241000233866 Fungi Species 0.000 claims description 10
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 9
- 108010054320 Lignin peroxidase Proteins 0.000 claims description 9
- 108010059820 Polygalacturonase Proteins 0.000 claims description 9
- 108010093305 exopolygalacturonase Proteins 0.000 claims description 9
- 229940059442 hemicellulase Drugs 0.000 claims description 9
- 108010002430 hemicellulase Proteins 0.000 claims description 9
- 108010062085 ligninase Proteins 0.000 claims description 9
- 241000596154 Belamcanda Species 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 4
- -1 13-glucuronase Proteins 0.000 claims description 3
- 208000034699 Vitreous floaters Diseases 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 239000008223 sterile water Substances 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 241000186361 Actinobacteria <class> Species 0.000 claims description 2
- 239000013055 pulp slurry Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 description 15
- 241001391944 Commicarpus scandens Species 0.000 description 4
- 238000011221 initial treatment Methods 0.000 description 4
- 229920002488 Hemicellulose Polymers 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000004382 Amylase Substances 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 241000222640 Polyporus Species 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000019418 amylase Nutrition 0.000 description 1
- 235000019730 animal feed additive Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 235000019626 lipase activity Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000019419 proteases Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 241001446247 uncultured actinomycete Species 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
Abstract
The invention discloses a straw biological method pollution-free pulping process, which comprises the following steps: firstly, kneading, softening and sterilizing the straws, and then carrying out bio-enzyme treatment on the straws to obtain straw coarse pulp; respectively grinding the straw coarse pulp and rubbing and dividing the straw coarse pulp to obtain straw filament pulp; respectively adding biological bacteria into the straw grinding slurry and the straw filament slurry for treatment; mixing the straw grinding slurry and the straw filament slurry which are respectively subjected to biological bacteria treatment according to the ratio of (0.7-1.2) to obtain straw mixed fine slurry, and performing friction devillication treatment on the straw mixed fine slurry again to obtain straw fine slurry; filtering and sterilizing the straw fine pulp by high-temperature steam to obtain sterile paper pulp; the straw biological method pollution-free pulping process has the advantages of no three-waste discharge in the whole process, small environmental pollution, good paper elasticity and difficult breakage and fracture of paper pulp prepared from the paper pulp slurry obtained by the paper pulp process.
Description
Technical Field
The invention belongs to the technical field of straw pulping, and particularly relates to a pollution-free straw pulping process by a biological method.
Background
The crop straw resources in China are rich, and in the prior art, the deep utilization of the straw is mainly as follows: as animal feed additives, as organic fertilizers, as incineration power generation, as building materials in small proportions, as paper-making raw materials, and the like. The straw is taken as the papermaking raw material, so that the straw is greatly popularized and developed in recent years, and the straw is taken as the papermaking raw material, so that the protection of forest trees and wood is facilitated, the environmental protection is facilitated, and the significance is profound.
In the prior art, the straw papermaking manufacturing technology is mostly carried out through modes of high-temperature high-pressure cooking, strong alkali hydrolysis and the like, the method belongs to the industry of severe pollution, more waste water and waste gas are generated in the paper pulp process, the subsequent three-waste treatment cost is high, and great influence is brought to the environment from the other side. Therefore, the development of a straw papermaking process based on a biological process is a necessary direction for straw papermaking in the future, and in the straw biological papermaking process, the three wastes are less, the environmental pollution is less, and the energy is saved and the environment is protected.
Disclosure of Invention
The invention aims to provide a straw biological pollution-free pulping process, which has no three-waste discharge and little environmental pollution in the whole process, and paper made of pulp slurry obtained by the pulp process has good elasticity and is not easy to damage and break.
The invention discloses a straw biological pollution-free pulping process, which comprises the following steps:
s1, kneading the straws, and then softening and sterilizing the straws through steam to obtain sterile straw shreds;
s2, carrying out bio-enzyme treatment on the sterile straw filaments to obtain straw coarse pulp; the biological enzyme comprises mixed enzyme of exo-cellulase, endo-cellulase, 13-glucuronase, lignin peroxidase, hemicellulase, ligninase, pectinase and pulping enzyme to obtain straw coarse pulp;
s3, standing and precipitating the straw coarse pulp, removing surface floaters and water on the upper part of the precipitate, and mixing the precipitate on the bottom with a small amount of water on the upper part to obtain viscous coarse pulp;
s4, dividing the viscous coarse pulp into two parts, and grinding one part to obtain straw grinding pulp; the other part is subjected to friction devillicating treatment to obtain straw filament slurry;
s5, adding biological bacteria into the straw grinding slurry and the straw filament slurry respectively for treatment; the biological bacteria comprise mixed bacteria of anaerobic bacillus, belamcanda chinensis, brown rot bacteria and polypore;
s6, mixing the straw grinding slurry and the straw filament slurry which are respectively subjected to biological bacterium treatment according to the ratio of 1 (0.7-1.2) to obtain straw mixed fine slurry, and performing friction devillication treatment on the straw mixed fine slurry again to obtain straw fine slurry;
s7, filtering the straw fine pulp, then carrying out high-temperature steam sterilization treatment, and finally adding sterile water for size mixing to obtain sterile paper pulp.
Preferably, the mass ratio of the exo-cellulase, the endo-cellulase, the 13-glucuronase, the lignin peroxidase, the hemicellulase, the ligninase, the pectinase and the pulping enzyme is (2-4): 1-2): 2-4): 2-5): 1-3): 1-2.
Preferably, the mass ratio of the exo-cellulase, the endo-cellulase, the 13-glucuronase, the lignin peroxidase, the hemicellulase, the ligninase, the pectinase and the pulping enzyme is 3:1:1:4:4:2:1: 1.
Preferably, the adding amount of the biological enzyme is 0.1-0.3 wt% of the straw, and the water content of the straw is not more than 25%.
Preferably, the adding amount of the biological enzyme is 0.25 wt% of the straw.
Preferably, the mass ratio of the anaerobic bacillus to the actinomycetes to the brown rot fungus to the polypore is (2-4): 2-3): 1-2; the adding amount of the biological bacteria is 0.1-0.2 wt% of the straw.
Preferably, the mass ratio of the anaerobic bacillus to the belamcanda chinensis to the brown rot fungi to the polypore is 3:2:2:1, and the adding amount of the biological fungi is 0.2 wt% of the straw.
Preferably, in S2, the temperature of the biological enzyme treatment is 20-30 ℃, and the treatment time is 24-48 hours; in S6, the treatment temperature of the biological bacteria is 20-30 ℃, and the treatment time is 12-72 hours.
Preferably, in S1, the straw is kneaded to obtain sterile straw filaments with filament length not greater than 2mm and diameter not greater than 0.5 mm.
The straw biological pollution-free pulping process has the beneficial effects that:
1. the straw is degraded for the first time through biological enzyme, and the straw is degraded for the second time through biological bacteria to obtain paper pulp slurry, and in the whole process, no chemical agent is added, no waste gas is discharged, no pollution and waste water is discharged, no waste residue is generated, and the paper pulp slurry is energy-saving and environment-friendly.
2. The pulp slurry obtained in the pulp process is a mixture of long fibers and short fibers, and paper prepared by the pulp slurry has good toughness and is not easy to break and fracture.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will now be further described with reference to specific embodiments.
The invention discloses a straw biological pollution-free pulping process, which comprises the following steps:
firstly, kneading the straws, and then softening and sterilizing the straws through steam to obtain sterile straw shreds. The filament length of the obtained sterile straw filament is not more than 2mm and the diameter of the sterile straw filament is not more than 0.5mm after the straw is kneaded. And then placing the straw into a steam box, steaming the straw at normal pressure by steam for about 1 hour till the straw is completely softened, and then cooling the straw to room temperature to obtain sterile straw filaments for later use.
The straw is kneaded, so that the straw filaments are combined with the biological enzyme, and the biological enzyme can more easily perform biological reaction with lignin and other substances in the straw to remove the lignin.
And secondly, carrying out biological enzyme treatment on the sterile straw filaments to obtain straw coarse pulp. Specifically, the sterile straw filaments are placed in a primary treatment tank, water and biological enzyme which are excessive in straw amount are added into the primary treatment tank, the mixture is fully stirred, the temperature in the primary treatment tank is kept at 20-30 ℃, and the standing fermentation treatment time is 24-48 hours. Specifically, the treatment is preferably carried out at a temperature of 27 ℃ for 30 hours. If the temperature is lower, the treatment time is prolonged properly.
In the technical scheme, the adding amount of the biological enzyme is 0.1-0.3 wt% of the straw, and 0.25 wt% is the best. The weight of the straw is calculated by the straw amount under the state that the water content is not more than 25 percent. The general crop straws are harvested, aired, bundled, transported, sold and bought for sale, temporarily stored and the like, and finally enter pulping, a large amount of moisture in the straws is evaporated in the process, and the moisture in the straws entering pulping is about 20-25 percent.
The biological enzyme in the technical scheme comprises mixed enzyme of exo-cellulase, endo-cellulase, 13-glucuronase, lignin peroxidase, hemicellulase, ligninase, pectinase and pulping enzyme, and the mass ratio of the exo-cellulase, the endo-cellulase, the 13-glucuronase, the lignin peroxidase, the hemicellulase, the ligninase, the pectinase and the pulping enzyme is (2-4): 1-2): 2-4: (2-5): 1-3): 1-2. Wherein the ratio of 3:1:1:4:4:2:1:1 is the best.
The exo-cellulase, the endo-cellulase, the 13-glucuronase, the lignin peroxidase, the hemicellulase and the ligninase have synergistic effect to complete the hydrolysis and degradation of the straw fiber, and the lignin degradation effect is good. Pectinase has the effect of decomposing pectin. The pulping enzyme improves the pulping effect, thereby improving the mechanical property of paper prepared by the paper pulp.
And thirdly, standing and precipitating the straw coarse pulp, and removing surface floating objects to obtain the straw clean coarse pulp. The straw coarse pulp after the biological enzyme treatment is fully stirred in a primary treatment pool, then is stood, and is stood for 5-7 hours, then floaters on the surface of a filter are filtered, and meanwhile, the water above the sediment is collected and temporarily stored through a pump body, and the collected water can be reused in the following steps or added into the next batch of straws, so that the whole-course wastewater-free discharge is realized. Then the viscous coarse pulp obtained after the bottom sediment is mixed with a small amount of water is pumped out for the subsequent fourth step of treatment.
Fourthly, dividing the viscous coarse pulp pumped out in the third step into two parts, and grinding one part to obtain straw grinding pulp which is short fiber; and the other part is subjected to friction devillicating and brooming treatment to obtain straw silk pulp which is fiber filament. The pulp obtained by the step has the fiber long filaments and the fiber short filaments, so that the paper prepared by the pulp in the technical scheme of the invention is soft and good in toughness, has smooth hand feeling, and is not easy to break after being damaged.
And fifthly, respectively adding biological bacteria into the straw grinding slurry and the straw filament slurry for treatment, wherein the treatment temperature is 20-30 ℃, and the treatment time is 12-72 hours, preferably 27 ℃. In the step, the temporarily stored water collected in the third step is respectively added into the straw grinding slurry and the straw filament slurry to recycle the water, and meanwhile, the biological enzyme participating in the water can be utilized, so that the purposes of saving energy, reducing emission and lowering cost are achieved, and the environment is protected.
In the technical scheme, the biological bacteria comprise mixed bacteria of anaerobic bacillus, phlebotium, brown rot bacteria and polypore. The mass ratio of the anaerobic bacillus to the belamcanda chinensis to the brown rot fungus to the polypore fungus is (2-4): 2-3): 1-2, and the best ratio is 3:2:2: 1. The adding amount of the biological bacteria is 0.1-0.2 wt% of the straw, and the weight of the straw is calculated by the straw amount under the state that the water content is not more than 25%. The adding amount of the biological bacteria is 0.2 wt% of the straw.
In the technical scheme, the straw pulp is subjected to secondary treatment by using biological bacteria, so that cellulose in the straw is further degraded, and meanwhile, paper prepared from the obtained straw pulp has good mechanical property, and good softness and toughness.
In the technical scheme, the anaerobic bacillus has stronger protease, amylase and lipase activities, can hydrolyze protein, starch and the like in the pulp, and can improve the smoothness of paper prepared from the paper pulp. The actinomycete can decompose and utilize carbon sources such as glucose, dextrin and soluble starch, and can decompose and utilize cellulose and hemicellulose. Brown rot fungi can degrade cellulose and hemicellulose. Polyporus can degrade lignocellulose and hemicellulose.
And sixthly, mixing the straw grinding slurry and the straw filament slurry which are respectively treated by the biological bacteria according to the ratio of 1 (0.7-1.2), and optimally mixing according to the ratio of 1:1 to obtain the straw mixed fine slurry. The pulp obtained by the step has fiber filaments and fiber staple fibers in a ratio of 1:1, the fiber staple fibers fill gaps among the fiber filaments, the lubricity and softness of paper are improved, and the fiber filaments ensure the toughness of the paper. The paper prepared by the sizing agent in the technical scheme of the invention is soft and good in toughness, has smooth hand feeling, and is not easy to break after being damaged.
And seventhly, filtering the mixed fine pulp obtained in the sixth step, wherein a 60-100 mesh sieve is adopted as a filter screen, performing pressure filtration, recovering filter residues, performing high-temperature steam sterilization treatment on the filtrate, and finally adding sterile water for size mixing to obtain sterile paper pulp. The degraded straw or fiber in the mixed fine pulp can be effectively removed through filtering, and the performance and quality of paper prepared from the pulp are further ensured.
According to the technical scheme, the paper pulp of the bio-mechanical pulp is prepared by combining mechanical equipment under the normal temperature and pressure environment, the process engineering is simple and quick, no three wastes are generated in the whole process, the environmental pollution is small, and the paper made of the paper pulp obtained by the paper pulp process has good elasticity and is not easy to break and fracture.
According to the technical scheme, the collected and temporarily stored water and the like in the preparation process can be recycled, and the paper pulp process is continuous and controllable.
Technical solution of the present invention is described above with reference to the embodiments, and it is obvious that the specific implementation of the present invention is not limited by the above-described manner, and it is within the scope of the present invention to adopt various insubstantial modifications of the method concept and technical solution of the present invention, or to directly apply the concept and technical solution of the present invention to other occasions without any modification.
Claims (9)
1. A straw biological method pollution-free pulping process is characterized by comprising the following steps:
s1, kneading the straws, and then softening and sterilizing the straws through steam to obtain sterile straw shreds;
s2, carrying out bio-enzyme treatment on the sterile straw filaments to obtain straw coarse pulp; the biological enzyme comprises mixed enzyme of exo-cellulase, endo-cellulase, 13-glucuronase, lignin peroxidase, hemicellulase, ligninase, pectinase and pulping enzyme to obtain straw coarse pulp;
s3, standing and precipitating the straw coarse pulp, removing surface floaters and water on the upper part of the precipitate, and mixing the precipitate on the bottom with a small amount of water on the upper part to obtain viscous coarse pulp;
s4, dividing the viscous coarse pulp into two parts, and grinding one part to obtain straw grinding pulp; the other part is subjected to friction devillicating treatment to obtain straw filament slurry;
s5, adding biological bacteria into the straw grinding slurry and the straw filament slurry respectively for treatment; the biological bacteria comprise mixed bacteria of anaerobic bacillus, belamcanda chinensis, brown rot bacteria and polypore;
s6, mixing the straw grinding slurry and the straw filament slurry which are respectively subjected to biological bacterium treatment according to the ratio of 1 (0.7-1.2) to obtain straw mixed fine slurry, and performing friction devillication treatment on the straw mixed fine slurry again to obtain straw fine slurry;
s7, filtering the straw fine pulp, then carrying out high-temperature steam sterilization treatment, and finally adding sterile water for size mixing to obtain sterile paper pulp.
2. The straw biological method pollution-free pulping process according to claim 1, wherein the mass ratio of the exo-cellulase, the endo-cellulase, the 13-glucuronase, the lignin peroxidase, the hemicellulase, the ligninase, the pectinase and the pulping enzyme is (2-4): 1-2: (2-4): 2-5): 1-3: (1-2): 1-2.
3. The straw biological method pollution-free pulping process according to claim 2, wherein the mass ratio of the exo-cellulase, the endo-cellulase, the 13-glucuronase, the lignin peroxidase, the hemicellulase, the ligninase, the pectinase and the pulping enzyme is 3:1:1:4:4:2:1: 1.
4. The straw biological method pollution-free pulping process according to claim 1, wherein the adding amount of the biological enzyme is 0.1-0.3 wt% of the straw, and the water content of the straw is not more than 25%.
5. The straw biological pollution-free pulping process according to claim 4, wherein the adding amount of the biological enzyme is 0.25 wt% of the straw.
6. The straw biological pollution-free pulping process according to claim 1, wherein the mass ratio of the anaerobic bacillus to the belamcanda chinensis to the brown rot fungus to the polypore fungus is (2-4): 2-3): 1-2; the adding amount of the biological bacteria is 0.1-0.2 wt% of the straw.
7. The straw biological pollution-free pulping process according to claim 6, wherein the mass ratio of the anaerobic bacillus to the actinomycetes to the brown rot fungi to the polypore is 3:2:2:1, and the addition amount of the biological fungi is 0.2 wt% of the straw.
8. The straw biological method pollution-free pulping process according to claim 1, wherein in S2, the temperature of biological enzyme treatment is 20-30 ℃, and the treatment time is 24-48 hours; in S6, the treatment temperature of the biological bacteria is 20-30 ℃, and the treatment time is 12-72 hours.
9. The straw biological method pollution-free pulping process as claimed in claim 1, wherein in S1, the straw is kneaded to obtain sterile straw filaments with filament length not greater than 2mm and diameter not greater than 0.5 mm.
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| CN202111328953.7A CN113957737A (en) | 2021-11-10 | 2021-11-10 | Pollution-free pulping process by straw biological method |
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| CN202111328953.7A CN113957737A (en) | 2021-11-10 | 2021-11-10 | Pollution-free pulping process by straw biological method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418201A2 (en) * | 1989-09-12 | 1991-03-20 | Sandoz Ltd. | Bleaching wood pulp with enzymes |
| CN101613980A (en) * | 2009-07-18 | 2009-12-30 | 大庆天成生物纤维制品有限责任公司 | A kind of biological assistant of grass as raw material cleaning pulping |
| CN102171353A (en) * | 2008-09-30 | 2011-08-31 | 瑞典乙醇化工技术有限公司 | Fermentation process starting from cellulosic biomass and involving the recirculation of detoxified stillage into the process |
| CN102345244A (en) * | 2010-08-05 | 2012-02-08 | 王凤忠 | Pulping and papermaking process through multiple-composition biological enzyme method |
| CN102978986A (en) * | 2012-11-27 | 2013-03-20 | 天津智展科技有限公司 | Method for preparing paper pulp by using biological enzyme |
| CN108442162A (en) * | 2018-04-16 | 2018-08-24 | 福建祥业环保科技股份有限公司 | Farm crop straw organism pulping process and paper making pulp |
-
2021
- 2021-11-10 CN CN202111328953.7A patent/CN113957737A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418201A2 (en) * | 1989-09-12 | 1991-03-20 | Sandoz Ltd. | Bleaching wood pulp with enzymes |
| CN102171353A (en) * | 2008-09-30 | 2011-08-31 | 瑞典乙醇化工技术有限公司 | Fermentation process starting from cellulosic biomass and involving the recirculation of detoxified stillage into the process |
| CN101613980A (en) * | 2009-07-18 | 2009-12-30 | 大庆天成生物纤维制品有限责任公司 | A kind of biological assistant of grass as raw material cleaning pulping |
| CN102345244A (en) * | 2010-08-05 | 2012-02-08 | 王凤忠 | Pulping and papermaking process through multiple-composition biological enzyme method |
| CN102978986A (en) * | 2012-11-27 | 2013-03-20 | 天津智展科技有限公司 | Method for preparing paper pulp by using biological enzyme |
| CN108442162A (en) * | 2018-04-16 | 2018-08-24 | 福建祥业环保科技股份有限公司 | Farm crop straw organism pulping process and paper making pulp |
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