CN110886118A - Method for separating lignin from papermaking straw - Google Patents
Method for separating lignin from papermaking straw Download PDFInfo
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- CN110886118A CN110886118A CN201911232388.7A CN201911232388A CN110886118A CN 110886118 A CN110886118 A CN 110886118A CN 201911232388 A CN201911232388 A CN 201911232388A CN 110886118 A CN110886118 A CN 110886118A
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- straw
- lignin
- papermaking
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- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
-
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a method for separating lignin from papermaking straw, which comprises the following steps: extruding and cutting straw of grass plants into filaments; soaking for more than 60 minutes; putting the soaked straw filaments into a high-pressure kettle, and heating to raise the temperature; opening a discharge valve of the high-pressure kettle to spray the materials in the kettle into the mixing chamber and mix the materials with cooling water; sieving the cooled material by a 100-mesh sieve; the coarse pulp is ground into pulp in the conventional papermaking process, and the fine pulp for papermaking can be obtained after washing. In the whole process of lignin separation, no chemical preparation is added, and the lignin separation is realized only by a physical method, so that a good foundation is created for the comprehensive utilization of raw materials; the separated liquid is subjected to anaerobic fermentation to prepare biogas, and the biogas slurry and biogas residues are treated by aerobic fermentation and the like to form good organic fertilizer; the separated liquid is further separated or reprocessed, so that the resource utilization of the papermaking waste can be realized, and the pressure on the environment is not caused; the cost of the paper pulp is reduced; the recovery rate is high.
Description
Technical Field
The invention relates to a method for separating lignin, in particular to a method for separating lignin from papermaking straw.
Background
Internationally, paper industry is second only to telecommunications and steel, and is one of the important signs of the state economic development level. However, the domestic paper making industry faces two dilemmas of large raw material gap and small environment capacity. Wood is poor in China, two thirds of wood pulp and one third of waste paper pulp need to be imported, and the annual import amount reaches two thousand tons and more. Meanwhile, nearly billions of tons of crop straws are to be treated every year in China, the environmental pressure caused by straw burning is increased day by day, the resource treatment of the straws becomes a major topic related to the national civilians, people pay increasing attention to straw papermaking, but the pollution of the conventional straw pulping to the environment is more serious, and thus, the large-scale production is not available. On one hand, the papermaking raw materials are seriously lacked, and on the other hand, the pressure of straw treatment is huge. Research on an industrialized pollution-free straw pulping mode is very urgent.
In the pulp and paper industry, the traditional cellulose separation method, such as a sulfate method or an alkali method, generates black liquid with extremely high pollution load in the cooking process, and causes great pressure on the environment. At present, some new pulping methods such as blasting pulping technology, puffing pulping technology, oxidation cleaning pulping technology, catalytic pulping technology, organic solution pulping technology, biological pulping technology and the like reduce pollution caused by the pulping process to a certain extent. But all have different degrees of limitations, can not replace the traditional process, and does not form large-scale mass production. The method separates cellulose, hemicellulose, lignin and other components of the grass fiber in a physical mode of high-temperature cooking by considering the great difference between the grass fiber and the wood fiber.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a method for separating lignin from straw for papermaking.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for separating lignin from papermaking straw comprises the following steps:
i, extruding and cutting straw of grass plants into filaments;
II, mixing water and the straw filaments according to the proportion of more than 1:1, soaking, and standing for more than 60 minutes;
III, putting the soaked straw filaments into a high-pressure kettle, heating to 170-220 ℃, and keeping the temperature for 5-30 minutes;
IV, opening a discharge valve of the high-pressure kettle, spraying the materials in the kettle into the mixing chamber, mixing the materials with cooling water injected into the mixing chamber at the same time, and cooling the materials;
v, sieving the cooled material by a 100-mesh sieve, wherein the oversize part is coarse pulp, and the undersize part is hemicellulose, lignin, mixed cells and impurities;
and VI, grinding the coarse pulp obtained in the step V into thick pulp in a conventional papermaking process, and washing to obtain fine pulp, so that papermaking can be further manufactured.
Further, the length of the cut straws is 10-60 mm, and the width of the cut straws is less than 0.5 mm.
Furthermore, the water temperature of the cooling water is 0-60 ℃.
Further, the straw is corn straw.
Further, papermaking includes, but is not limited to, toilet paper and corrugated paper; when the sanitary paper is produced, the temperature of the high-pressure kettle is over 195 ℃ and the time is 30 minutes; when corrugated paper is produced, the temperature of the autoclave is above 185 ℃ and the time is 15 minutes.
Further, the temperature of the autoclave was 185 ℃ or more and the time was 15 minutes when corrugated paper was produced.
Further, the refining method of the coarse pulp comprises a high-consistency mill, a medium-consistency mill and a low-consistency mill; the washing method of the brown stock is countercurrent washing.
In the whole process of lignin separation, no chemical preparation is added, the lignin separation is realized only by a physical method, and the separated substances basically keep the natural characteristics of each component of the original plant material plant, so that a good foundation is created for the comprehensive utilization of the raw materials; the separated liquid is subjected to anaerobic fermentation to prepare biogas, and the biogas slurry and biogas residues are treated by aerobic fermentation and the like to form good organic fertilizer; the separated liquid is further separated or reprocessed, so that the resource utilization of the papermaking waste can be realized, and the pressure on the environment is not caused; the cost of the paper pulp is reduced without adding chemical agents; the recovery rate is high.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
A method for separating lignin from papermaking straw comprises the following steps:
i, extruding and cutting straw of grass plants into filaments; the length of the cut straw is 10-60 mm, and the width of the cut straw is less than 0.5 mm;
II, mixing water and the straw filaments according to the proportion of more than 1:1, soaking, and standing for more than 60 minutes;
III, putting the soaked straw filaments into a high-pressure kettle, heating to 170-220 ℃, and keeping the temperature for 5-30 minutes;
IV, opening a discharge valve of the high-pressure kettle, spraying the materials in the kettle into the mixing chamber, mixing the materials with cooling water injected into the mixing chamber at the same time, and cooling the materials; the water temperature of the cooling water can be selected from 0-60 ℃, and the cooling effect on high-temperature materials can be achieved;
v, sieving the cooled material by a 100-mesh sieve, wherein the oversize part is coarse pulp, and the undersize part is hemicellulose, lignin, mixed cells and impurities;
VI, the coarse pulp is washed by a high-concentration mill, a medium-concentration mill, a low-concentration mill and other pulp grinding methods in the conventional papermaking process by a counter-current washing method to obtain fine pulp, and then papermaking can be further manufactured.
The invention is further illustrated by the following specific examples:
the first embodiment,
I, extruding and cutting corn straws into filaments; the length of the cut straw is 10-60 mm, and the width of the cut straw is less than 0.5 mm;
II, mixing water and the straw filaments according to the ratio of 3:1, soaking and standing for 60 minutes;
III, putting the soaked straw filaments into a high-pressure kettle, heating to 220 ℃, and keeping the temperature for 20 minutes;
IV, opening a discharge valve of the high-pressure kettle, spraying the materials in the kettle into the mixing chamber and mixing the materials with cooling water injected into the mixing chamber at the same time, wherein the temperature of the injected cooling water is 60 ℃, and cooling the materials;
v, sieving the cooled material by a 100-mesh sieve, wherein the oversize part is coarse pulp, and the undersize part is hemicellulose, lignin, mixed cells and impurities;
VI, the coarse pulp is washed by a high-concentration mill, a medium-concentration mill, a low-concentration mill and other pulp grinding methods in the conventional papermaking process by a counter-current washing method to obtain fine pulp, and then papermaking can be further manufactured.
Example II,
I, extruding and cutting corn straws into filaments; the length of the cut straw is 10-60 mm, and the width of the cut straw is less than 0.5 mm;
II, mixing water and the straw filaments according to the ratio of 3:1, soaking and standing for 60 minutes;
III, putting the soaked straw filaments into a high-pressure kettle, heating to 170 ℃, and keeping the temperature for 5 minutes;
IV, opening a discharge valve of the high-pressure kettle, spraying the materials in the kettle into the mixing chamber and mixing the materials with cooling water injected into the mixing chamber at the same time, wherein the temperature of the injected cooling water is 0 ℃, and cooling the materials;
v, sieving the cooled material by a 100-mesh sieve, wherein the oversize part is coarse pulp, and the undersize part is hemicellulose, lignin, mixed cells and impurities;
VI, the coarse pulp is washed by a high-concentration mill, a medium-concentration mill, a low-concentration mill and other pulp grinding methods in the conventional papermaking process by a counter-current washing method to obtain fine pulp, and then papermaking can be further manufactured.
Example III,
I, extruding and cutting corn straws into filaments; the length of the cut straw is 10-60 mm, and the width of the cut straw is less than 0.5 mm;
II, mixing water and the straw filaments according to the ratio of 2:1, soaking and standing for 60 minutes;
III, putting the soaked straw filaments into a high-pressure kettle, heating to 195 ℃, and keeping the temperature for 30 minutes;
opening a discharge valve of the high-pressure kettle to spray the materials in the kettle into the mixing chamber and mix the materials with cooling water injected into the mixing chamber at the same time, wherein the temperature of the injected cooling water is 30 ℃, and the amount of the injected cooling water is 1.42 times of the total amount of the materials, so that the temperature of the materials is reduced to 95 ℃;
v, sieving the cooled material by a 100-mesh sieve, wherein the oversize part is coarse pulp, and the undersize part is hemicellulose, lignin, mixed cells and impurities;
VI, the coarse pulp is washed by a high-concentration mill, a medium-concentration mill, a low-concentration mill and other pulping methods in the conventional papermaking process by a counter-current washing method to obtain fine pulp for papermaking, and further produce the toilet paper.
Example four,
I, extruding and cutting corn straws into filaments; the length of the cut straw is 10-60 mm, and the width of the cut straw is less than 0.5 mm;
II, mixing water and the straw filaments according to the ratio of 2:1, soaking and standing for 60 minutes;
III, putting the soaked straw filaments into a high-pressure kettle, heating to 185 ℃ and keeping the temperature for 15 minutes;
opening a discharge valve of the high-pressure kettle to spray the materials in the kettle into the mixing chamber and mix the materials with cooling water injected into the mixing chamber at the same time, wherein the temperature of the injected cooling water is 30 ℃, and the amount of the injected cooling water is 1.42 times of the total amount of the materials, so that the temperature of the materials is reduced to 95 ℃;
v, sieving the cooled material by a 100-mesh sieve, wherein the oversize part is coarse pulp, and the undersize part is hemicellulose, lignin, mixed cells and impurities;
VI, the coarse pulp is washed by a high-concentration mill, a medium-concentration mill, a low-concentration mill and other pulp grinding methods in the conventional papermaking process by a counter-current washing method to obtain fine pulp for papermaking, and further produce corrugated paper.
The invention has the beneficial effects that:
the table 1 shows the lignin content of the corn straw (absolutely dry) before high-temperature hydrolysis, the lignin content of the corn straw (absolutely dry) after cooking and the lignin content in cooking liquid (the detection is in reference to the standard GB/T20805-2006):
TABLE 1
From the data in the table above it can be seen that only 54.57% of the lignin content remained in the cooked fibre, i.e. a 45.43% reduction in lignin in the fibre (only non-soluble lignin was detectable by this criterion).
The coarse pulp after the corn straw silk is cooked, and is subjected to subsequent fiber separation process such as coarse grinding, screening and fine grinding, the prepared paper pulp can be used for making corrugated medium paper sample sheets, and also can be used for making toilet paper sample sheets meeting the natural color, and the key data detection of the relevant fiber systems of the sample sheets is shown in tables 2 and 3:
TABLE 2 toilet paper sample test data
| Serial number | Inspection item | Unit of | Measured value | Standard of detection method |
| 1 | Quantification of | g/m2 | 12.4 | GB/T451-2002 |
| 2 | Horizontal lotion height (finished layer) | mm/100s | 49 | GB/T461.1-2002 |
| 3 | Tensile index (average length and width) | N.m/g | 30.6 | GB/T453-2002 |
| 4 | Softness (average length and breadth) | mN | 13.7 | GB/T8942-2002 |
TABLE 3 corrugated medium sample sheet test data
The data in the table show that the pulp produced by the cooking of the corn stover filaments is good.
Compared with the prior art, the invention has the advantages that:
a. no chemical agent is added in the whole process of lignin separation, the lignin separation is realized only by a physical method, and the separated substances basically keep the natural characteristics of each component of the original plant material plant, thereby creating a good foundation for the comprehensive utilization of the raw materials;
b. anaerobic fermentation of separated liquid (including pulp washing liquid) to obtain marsh gas (experimental determination of boiling liquid ts marsh gas generation)The biomass is 409m3T), the biogas slurry and the biogas residues are treated by aerobic fermentation and the like to form good organic fertilizers; the separated liquid is further separated or processed to obtain lignin, polysaccharide, oligosaccharide, feed yeast, xylose, furfural and the like, so that the resource utilization of the papermaking waste is realized, and the pressure on the environment is not caused;
c. the cost of the paper pulp is reduced without adding chemical agents; because no chemical agent is added in the paper pulp process, the waste water produced in the pulping process has good biochemical performance, and can realize the comprehensive utilization of raw materials, such as the methane produced by anaerobic fermentation, the waste liquid produced by each ton of paper pulp, the methane produced by anaerobic fermentation 230m3To 600m3(different quality pulps, different gas production);
d. the recovery rate is high; the yield of corrugated base paper made of corn straws is more than 50 percent, and the yield of natural-color toilet paper made of corn straws is more than 30 percent.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (6)
1. A method for separating lignin from papermaking straw is characterized by comprising the following steps: the method comprises the following steps:
i, extruding and cutting straw of grass plants into filaments;
II, mixing water and the straw filaments according to the proportion of more than 1:1, soaking, and standing for more than 60 minutes;
III, putting the soaked straw filaments into a high-pressure kettle, heating to 170-220 ℃, and keeping the temperature for 5-30 minutes;
IV, opening a discharge valve of the high-pressure kettle, spraying the materials in the kettle into the mixing chamber, mixing the materials with cooling water injected into the mixing chamber at the same time, and cooling the materials;
v, sieving the cooled material by a 100-mesh sieve, wherein the oversize part is coarse pulp, and the undersize part is hemicellulose, lignin, mixed cells and impurities;
and VI, grinding the coarse pulp obtained in the step V into thick pulp in a conventional papermaking process, and washing to obtain fine pulp, so that papermaking can be further manufactured.
2. The method for separating lignin from papermaking straw straws as claimed in claim 1, wherein the lignin is obtained by a method comprising the following steps: the length of the cut straw is 10-60 mm, and the width of the cut straw is less than 0.5 mm.
3. The method for separating lignin from papermaking straw straws as claimed in claim 2, wherein the lignin is obtained by a method comprising the following steps: the water temperature of the cooling water is 0-60 ℃.
4. The method for separating lignin from papermaking straw straws as claimed in claim 3, wherein the lignin is obtained by a method comprising the following steps: the straw is corn straw.
5. The method for separating lignin from papermaking straw straws as claimed in claim 4, wherein the lignin is obtained by a method comprising the following steps: the papermaking paper includes but is not limited to toilet paper and corrugated paper; when the sanitary paper is produced, the temperature of the high-pressure kettle is over 195 ℃ and the time is 30 minutes; when corrugated paper is produced, the temperature of the autoclave is above 185 ℃ and the time is 15 minutes.
6. The method for separating lignin from papermaking straw straws as claimed in claim 1, wherein the lignin is obtained by a method comprising the following steps: the pulping method of the coarse pulp comprises a high-consistency mill, a medium-consistency mill and a low-consistency mill; the washing method of the brown stock is countercurrent washing.
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| CN201911232388.7A CN110886118A (en) | 2019-12-05 | 2019-12-05 | Method for separating lignin from papermaking straw |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250249A (en) * | 2021-12-23 | 2022-03-29 | 黑龙江省秸乐农业科技发展有限公司 | Straw extract and preparation method and application thereof |
| CN116622781A (en) * | 2023-06-13 | 2023-08-22 | 河北沼阳环境科技有限公司 | Method for producing biogas and biological fiber slurry by anaerobic fermentation of crop straw |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5944953A (en) * | 1996-03-12 | 1999-08-31 | Le Centre Specialise En Pates Et Papiers (Cspp) Du College D'enseignement General Et Professionnel De Trois-Riveres | Process for simultaneous mechanical and chemical defibration of corn stalks and straw materials |
| CN1657694A (en) * | 2005-03-09 | 2005-08-24 | 中国制浆造纸研究院 | Wood method for pulping using cotton stalk, bush or brush |
| CN1827911A (en) * | 2006-04-13 | 2006-09-06 | 田永兴 | Mechanical cold method for making paper pulp |
| CN101671974A (en) * | 2008-09-11 | 2010-03-17 | 山东太阳纸业股份有限公司 | Sunflower stalk pulping technology |
| CN104947495A (en) * | 2015-05-28 | 2015-09-30 | 姚婷婷 | Preparation method of paper for industry |
| CN106676924A (en) * | 2017-01-05 | 2017-05-17 | 新疆弘瑞达纤维有限公司 | Method of preparing coarse paper pulp by using plant straws |
| CN107119478A (en) * | 2017-06-22 | 2017-09-01 | 北京新锐得环保科技有限公司 | The technique that environment-friendly paper pulp is produced based on Physical plant decomposition technique |
| CN109056400A (en) * | 2018-08-16 | 2018-12-21 | 刘同林 | A kind of straw comprehensive utilization method |
| CN110129380A (en) * | 2019-05-24 | 2019-08-16 | 刘同林 | Utilize the method for stalk production biomass fuel, corrugated paper, organic fertilizer |
| CN110318288A (en) * | 2019-05-27 | 2019-10-11 | 刘同林 | A method of corrugated paper, natural gas, organic fertilizer are produced using stalk |
-
2019
- 2019-12-05 CN CN201911232388.7A patent/CN110886118A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5944953A (en) * | 1996-03-12 | 1999-08-31 | Le Centre Specialise En Pates Et Papiers (Cspp) Du College D'enseignement General Et Professionnel De Trois-Riveres | Process for simultaneous mechanical and chemical defibration of corn stalks and straw materials |
| CN1657694A (en) * | 2005-03-09 | 2005-08-24 | 中国制浆造纸研究院 | Wood method for pulping using cotton stalk, bush or brush |
| CN1827911A (en) * | 2006-04-13 | 2006-09-06 | 田永兴 | Mechanical cold method for making paper pulp |
| CN101671974A (en) * | 2008-09-11 | 2010-03-17 | 山东太阳纸业股份有限公司 | Sunflower stalk pulping technology |
| CN104947495A (en) * | 2015-05-28 | 2015-09-30 | 姚婷婷 | Preparation method of paper for industry |
| CN106676924A (en) * | 2017-01-05 | 2017-05-17 | 新疆弘瑞达纤维有限公司 | Method of preparing coarse paper pulp by using plant straws |
| CN107119478A (en) * | 2017-06-22 | 2017-09-01 | 北京新锐得环保科技有限公司 | The technique that environment-friendly paper pulp is produced based on Physical plant decomposition technique |
| CN109056400A (en) * | 2018-08-16 | 2018-12-21 | 刘同林 | A kind of straw comprehensive utilization method |
| CN110129380A (en) * | 2019-05-24 | 2019-08-16 | 刘同林 | Utilize the method for stalk production biomass fuel, corrugated paper, organic fertilizer |
| CN110318288A (en) * | 2019-05-27 | 2019-10-11 | 刘同林 | A method of corrugated paper, natural gas, organic fertilizer are produced using stalk |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250249A (en) * | 2021-12-23 | 2022-03-29 | 黑龙江省秸乐农业科技发展有限公司 | Straw extract and preparation method and application thereof |
| CN116622781A (en) * | 2023-06-13 | 2023-08-22 | 河北沼阳环境科技有限公司 | Method for producing biogas and biological fiber slurry by anaerobic fermentation of crop straw |
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Application publication date: 20200317 |