CN115404711A - Method and production system for biologically decomposing and cleanly producing cellulose by using agricultural straws - Google Patents
Method and production system for biologically decomposing and cleanly producing cellulose by using agricultural straws Download PDFInfo
- Publication number
- CN115404711A CN115404711A CN202211121425.9A CN202211121425A CN115404711A CN 115404711 A CN115404711 A CN 115404711A CN 202211121425 A CN202211121425 A CN 202211121425A CN 115404711 A CN115404711 A CN 115404711A
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- cellulose
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- raw materials
- bin
- conveying
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- 239000001913 cellulose Substances 0.000 title claims abstract description 44
- 229920002678 cellulose Polymers 0.000 title claims abstract description 44
- 239000010902 straw Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000010411 cooking Methods 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000004537 pulping Methods 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000011265 semifinished product Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000007865 diluting Methods 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000000855 fermentation Methods 0.000 claims description 12
- 230000004151 fermentation Effects 0.000 claims description 12
- KSEBMYQBYZTDHS-HWKANZROSA-M (E)-Ferulic acid Natural products COC1=CC(\C=C\C([O-])=O)=CC=C1O KSEBMYQBYZTDHS-HWKANZROSA-M 0.000 claims description 8
- 238000000354 decomposition reaction Methods 0.000 claims description 8
- KSEBMYQBYZTDHS-HWKANZROSA-N ferulic acid Chemical compound COC1=CC(\C=C\C(O)=O)=CC=C1O KSEBMYQBYZTDHS-HWKANZROSA-N 0.000 claims description 8
- 229940114124 ferulic acid Drugs 0.000 claims description 8
- KSEBMYQBYZTDHS-UHFFFAOYSA-N ferulic acid Natural products COC1=CC(C=CC(O)=O)=CC=C1O KSEBMYQBYZTDHS-UHFFFAOYSA-N 0.000 claims description 8
- 235000001785 ferulic acid Nutrition 0.000 claims description 8
- QURCVMIEKCOAJU-UHFFFAOYSA-N trans-isoferulic acid Natural products COC1=CC=C(C=CC(O)=O)C=C1O QURCVMIEKCOAJU-UHFFFAOYSA-N 0.000 claims description 8
- 210000002421 cell wall Anatomy 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 108090000790 Enzymes Proteins 0.000 claims description 4
- 102000004190 Enzymes Human genes 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 229940088598 enzyme Drugs 0.000 description 3
- 238000004811 liquid chromatography Methods 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 101001065065 Aspergillus awamori Feruloyl esterase A Proteins 0.000 description 1
- 108010059892 Cellulase Proteins 0.000 description 1
- 108010059820 Polygalacturonase Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 229940106157 cellulase Drugs 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 108010093305 exopolygalacturonase Proteins 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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- 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
- 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
-
- 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
- D21C9/00—After-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
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Paper (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention discloses a method and a production system for biologically decomposing and cleanly producing cellulose by agricultural straws, wherein the method comprises the following steps: fermenting the straws; pouring the fermented raw materials into a material homogenizing bin, feeding the raw materials into a cooking pipe for cooking, and then feeding the raw materials into a squeezer for solid-liquid separation; wherein the solid part is sent into a high-concentration mill to decompose a semi-finished product of cellulose; sending the cellulose semi-finished product to a pulping tank, diluting, and passing through a pressure screen to obtain qualified cellulose and crude fiber; the coarse fiber is sent to a treatment tank and sent back to a pulping tank after being processed by a low-concentration mill; and conveying the qualified cellulose to a dewatering machine for dewatering, and then conveying the qualified cellulose to a discharging bin. The invention has no emission of harmful substances, excellent environmental protection performance and convenient operation.
Description
Background
Straw is used as agricultural waste and is generally treated by methods such as incineration and the like, so that resources are wasted and the environment is polluted; the existing method for decomposing straw adopts a chemical method of alkali or acid, also adopts a chemical mechanical method combining chemistry and machinery, or a chemical biological method, and the treatment methods all have sewage, discharge and are harmful to the environment.
Disclosure of Invention
The invention aims to provide an environment-friendly and convenient method and a production system for biologically decomposing and cleanly producing cellulose by agricultural straws.
The technical solution of the invention is as follows:
a method for biologically decomposing and cleanly producing cellulose by agricultural straws is characterized by comprising the following steps: comprises the following steps:
(1) Feeding the straw added with biological enzyme preparation into a fermentation bin, measuring the content of ferulic acid by liquid chromatography, judging the decomposition degree of cell wall, setting the target value of the decomposition degree to be 30-80%, and stopping fermentation when the target value is reached;
(2) Pouring the fermented raw materials into a homogenizing bin;
(3) Feeding the raw materials to a cooking pipe through a homogenizing conveyor, and simultaneously inputting normal-pressure steam;
(4) Sending the cooked raw materials to a squeezer for solid-liquid separation; wherein the solid part (mainly cellulose) is sent into a high-concentration mill through a screw conveyor to be rubbed and decomposed to obtain a cellulose semi-finished product;
(5) Sending the cellulose semi-finished product to a pulping tank, diluting, and passing through a pressure screen to obtain qualified cellulose and crude fiber; sending the crude fiber to a treatment tank, processing the crude fiber by a low-concentration mill, and then sending the crude fiber back to a pulping tank; and conveying the qualified cellulose to a dewatering machine for dewatering, and then conveying the qualified cellulose to a discharging bin.
And (3) the temperature of the atmospheric steam is 90 to 150 ℃, and the cooking time is 0.5 to 1 hour.
And (4) conveying the raw materials cooked in the step (4) to a strong belt type squeezer through a conveying belt for solid-liquid separation.
The dehydrator in the step (5) is a belt type pressure dehydrator; and (5) conveying water discharged by the dehydrator to a water storage tank, and recycling the water after precipitation treatment.
A production system for a method for producing cellulose by biologically decomposing and cleaning agricultural straws is characterized in that: comprises a fermentation bin for fermenting straw raw materials and a liquid chromatograph for measuring the content of ferulic acid; a material homogenizing bin is arranged behind the fermentation bin, a cooking pipe for cooking the raw material is arranged behind the material homogenizing bin, a squeezer for solid-liquid separation is arranged behind the cooking pipe, a high-concentration mill for separating a semi-finished cellulose product from a solid part obtained by squeezing is arranged behind the squeezer, a pulp dissolving tank is arranged behind the high-concentration mill, and a pressure screen is arranged behind the pulp dissolving tank; a treatment tank for treating the crude fiber is arranged behind the pressure screen, a low-concentration mill is arranged behind the treatment tank, and an outlet of the low-concentration mill is communicated with the pulping tank; a dehydrator for dehydrating the qualified cellulose is arranged behind the pressure screen, and a discharge bin is arranged behind the dehydrator.
A water storage pool for precipitating the water is arranged behind the dehydrator. The cooking pipe is a spiral cooking pipe.
The invention has no harmful substance emission, excellent environmental protection performance and convenient operation.
The present invention will be further described with reference to the following examples.
Detailed Description
A method for biologically decomposing and cleanly producing cellulose by agricultural straws comprises the following steps:
(1) Feeding straws added with biological enzyme preparation (such as cellulase, pectinase, feruloyl esterase and other enzymes capable of decomposing straw cell walls) into a fermentation chamber, measuring the content of ferulic acid by a liquid chromatography method and other methods, judging the decomposition degree of the cell walls (the measured content of ferulic acid/the content of ferulic acid multiplied by 100% = the decomposition degree of the cell walls when the cell walls are completely decomposed), setting the target value of the decomposition degree to be 30-80%, and stopping fermentation when the target value is reached;
(2) Pouring the fermented raw materials into a homogenizing bin;
(3) Feeding the raw materials to a cooking pipe through a homogenizing conveyor, and simultaneously inputting normal-pressure steam;
(4) Sending the cooked raw materials to a squeezer for solid-liquid separation; wherein the solid part (mainly cellulose) is sent into a high-concentration mill through a screw conveyor to be rubbed and decomposed to obtain a cellulose semi-finished product;
(5) Sending the cellulose semi-finished product to a pulping tank, diluting, and passing through a pressure screen to obtain qualified cellulose and crude fiber; sending the crude fiber to a treatment tank, processing the crude fiber by a low-concentration mill, and then sending the crude fiber back to a pulping tank; and (4) conveying the qualified cellulose to a dewatering machine for dewatering, and then conveying to a discharging bin.
And (3) the temperature of the atmospheric steam is 90 to 150 ℃, and the cooking time is 0.5 to 1 hour.
And (5) conveying the raw materials cooked in the step (4) to a strong belt type squeezer through a conveying belt for solid-liquid separation.
The dehydrator in the step (5) is a belt type pressure dehydrator; and (5) conveying water discharged by the dehydrator to a water storage tank, and recycling the water after precipitation treatment.
A production system of a method for biologically decomposing and cleanly producing cellulose by agricultural straws comprises a fermentation bin for fermenting straw raw materials and a liquid chromatograph for measuring the content of ferulic acid; a material homogenizing bin is arranged behind the fermentation bin, a cooking pipe for cooking the raw material is arranged behind the material homogenizing bin, a squeezer for solid-liquid separation is arranged behind the cooking pipe, a high-concentration mill for separating a semi-finished cellulose product from a solid part obtained by squeezing is arranged behind the squeezer, a pulp dissolving tank is arranged behind the high-concentration mill, and a pressure screen is arranged behind the pulp dissolving tank; a treatment tank for treating the crude fiber is arranged behind the pressure screen, a low-concentration mill is arranged behind the treatment tank, and an outlet of the low-concentration mill is communicated with the pulping tank; a dehydrator for dehydrating the qualified cellulose is arranged behind the pressure screen, and a discharge bin is arranged behind the dehydrator.
A water storage pool for precipitating the water is arranged behind the dehydrator. The cooking pipe is a spiral cooking pipe.
Claims (7)
1. A method for biologically decomposing and cleanly producing cellulose by agricultural straws is characterized by comprising the following steps: comprises the following steps:
(1) Feeding the straws added with the biological enzyme preparation into a fermentation bin, measuring the content of ferulic acid, judging the decomposition degree of cell walls, and stopping fermentation when the target value of the decomposition degree is set to be 30-80 percent and the target value is reached;
(2) Pouring the fermented raw materials into a homogenizing bin;
(3) Feeding the raw materials to a cooking pipe through a homogenizing conveyor, and simultaneously inputting normal-pressure steam;
(4) Sending the cooked raw materials to a squeezer for solid-liquid separation; wherein the solid part is sent into a high-concentration mill for friction decomposition to obtain a semi-finished product of cellulose;
(5) Sending the semi-finished cellulose product to a pulping pool, diluting the semi-finished cellulose product, and then screening the diluted semi-finished cellulose product through a pressure screen to obtain qualified cellulose and crude fiber; sending the crude fiber to a treatment tank, processing the crude fiber by a low-concentration mill, and then sending the crude fiber back to a pulping tank; and conveying the qualified cellulose to a dewatering machine for dewatering, and then conveying the qualified cellulose to a discharging bin.
2. The method for biologically decomposing and cleanly producing the cellulose by the agricultural straws as claimed in the claim 1, which is characterized in that: and (3) the temperature of the atmospheric steam is 90 to 150 ℃, and the cooking time is 0.5 to 1 hour.
3. The method for producing cellulose by biologically decomposing agricultural straws in a clean way as claimed in claim 1, which is characterized in that: and (4) conveying the raw materials cooked in the step (4) to a strong belt type squeezer through a conveying belt for solid-liquid separation.
4. The method for producing cellulose by biologically decomposing agricultural straws in a clean way as claimed in claim 1, which is characterized in that: the dehydrator in the step (5) is a belt type pressure dehydrator; and (5) conveying water discharged by the dehydrator to a water storage tank, and recycling the water after precipitation treatment.
5. A production system of the method for biologically decomposing and cleanly producing the cellulose by the agricultural straws as claimed in claim 1, which is characterized in that: comprises a fermentation bin for fermenting straw raw materials and a liquid chromatograph for measuring the content of ferulic acid; a material homogenizing bin is arranged behind the fermentation bin, a cooking pipe for cooking the raw material is arranged behind the material homogenizing bin, a squeezer for solid-liquid separation is arranged behind the cooking pipe, a high-concentration mill for separating a semi-finished cellulose product from a solid part obtained by squeezing is arranged behind the squeezer, a pulp dissolving tank is arranged behind the high-concentration mill, and a pressure screen is arranged behind the pulp dissolving tank; a treatment tank for treating the crude fiber is arranged behind the pressure screen, a low-concentration mill is arranged behind the treatment tank, and an outlet of the low-concentration mill is communicated with the pulping tank; a dehydrator for dehydrating the qualified cellulose is arranged behind the pressure screen, and a discharge bin is arranged behind the dehydrator.
6. The production system of the method for biologically decomposing and cleanly producing the cellulose by the agricultural straws as claimed in the claim 5, is characterized in that: a water storage tank for performing precipitation treatment on water is arranged behind the dehydrator, and the treated reclaimed water is recycled, so that zero discharge of water is realized.
7. The production system of the method for biologically decomposing and cleanly producing the cellulose by the agricultural straws as claimed in the claim 5 or the claim 6, which is characterized in that: the cooking pipe is a spiral cooking pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211121425.9A CN115404711A (en) | 2022-09-15 | 2022-09-15 | Method and production system for biologically decomposing and cleanly producing cellulose by using agricultural straws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211121425.9A CN115404711A (en) | 2022-09-15 | 2022-09-15 | Method and production system for biologically decomposing and cleanly producing cellulose by using agricultural straws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115404711A true CN115404711A (en) | 2022-11-29 |
Family
ID=84166251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211121425.9A Pending CN115404711A (en) | 2022-09-15 | 2022-09-15 | Method and production system for biologically decomposing and cleanly producing cellulose by using agricultural straws |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115404711A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101918815A (en) * | 2007-11-02 | 2010-12-15 | 赛乐斯股份有限公司 | Materials and methods for use in biomass processing |
| CN102345244A (en) * | 2010-08-05 | 2012-02-08 | 王凤忠 | Pulping and papermaking process through multiple-composition biological enzyme method |
| CN103459605A (en) * | 2011-01-31 | 2013-12-18 | 诺维信北美公司 | Processes for enzymatic refining of pretreated cellulosic material for saccharification |
| CN103556519A (en) * | 2013-11-13 | 2014-02-05 | 赵南政 | Biological compound enzyme biochemical agent and method for preparing biological straw paper pulp by using same |
| CN107747246A (en) * | 2017-10-28 | 2018-03-02 | 李鑫 | A kind of ultrasonic wave extraction string production technology and equipments |
| US20210054566A1 (en) * | 2018-12-29 | 2021-02-25 | Qilu University Of Technology | Method for preparing unbleached biomechanical pulp from straw |
| CN113355933A (en) * | 2020-10-23 | 2021-09-07 | 高树森 | Environment-friendly pulping and papermaking composition, modifier and environment-friendly pulping and papermaking method |
| US20220205178A1 (en) * | 2020-12-31 | 2022-06-30 | Qilu University Of Technology | Method for preparing unbleached biomechanical pulp and fully utilizing by-products by treating straws with heat steam in synergy with biological enzyme |
-
2022
- 2022-09-15 CN CN202211121425.9A patent/CN115404711A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101918815A (en) * | 2007-11-02 | 2010-12-15 | 赛乐斯股份有限公司 | Materials and methods for use in biomass processing |
| CN102345244A (en) * | 2010-08-05 | 2012-02-08 | 王凤忠 | Pulping and papermaking process through multiple-composition biological enzyme method |
| CN103459605A (en) * | 2011-01-31 | 2013-12-18 | 诺维信北美公司 | Processes for enzymatic refining of pretreated cellulosic material for saccharification |
| CN103556519A (en) * | 2013-11-13 | 2014-02-05 | 赵南政 | Biological compound enzyme biochemical agent and method for preparing biological straw paper pulp by using same |
| CN107747246A (en) * | 2017-10-28 | 2018-03-02 | 李鑫 | A kind of ultrasonic wave extraction string production technology and equipments |
| US20210054566A1 (en) * | 2018-12-29 | 2021-02-25 | Qilu University Of Technology | Method for preparing unbleached biomechanical pulp from straw |
| CN113355933A (en) * | 2020-10-23 | 2021-09-07 | 高树森 | Environment-friendly pulping and papermaking composition, modifier and environment-friendly pulping and papermaking method |
| US20220205178A1 (en) * | 2020-12-31 | 2022-06-30 | Qilu University Of Technology | Method for preparing unbleached biomechanical pulp and fully utilizing by-products by treating straws with heat steam in synergy with biological enzyme |
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