CN219862106U - System for producing cellulose from agricultural straw - Google Patents
System for producing cellulose from agricultural straw Download PDFInfo
- Publication number
- CN219862106U CN219862106U CN202320596349.0U CN202320596349U CN219862106U CN 219862106 U CN219862106 U CN 219862106U CN 202320596349 U CN202320596349 U CN 202320596349U CN 219862106 U CN219862106 U CN 219862106U
- Authority
- CN
- China
- Prior art keywords
- forage
- pool
- arranged behind
- dewatering machine
- dewatering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010902 straw Substances 0.000 title claims abstract description 22
- 239000001913 cellulose Substances 0.000 title claims abstract description 10
- 229920002678 cellulose Polymers 0.000 title claims abstract description 10
- 239000004459 forage Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 17
- 238000002791 soaking Methods 0.000 claims abstract description 12
- 238000000855 fermentation Methods 0.000 claims abstract description 6
- 230000004151 fermentation Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 208000005156 Dehydration Diseases 0.000 description 10
- 230000018044 dehydration Effects 0.000 description 10
- 238000006297 dehydration reaction Methods 0.000 description 10
- 244000025254 Cannabis sativa Species 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000227 grinding Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000012620 biological material Substances 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 241001349804 Juncus alpinoarticulatus Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 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
- 239000011425 bamboo Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Paper (AREA)
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The utility model discloses a system for producing cellulose from agricultural straws, which is characterized in that: the straw dewatering machine comprises a crusher for crushing straw and forage subjected to fermentation treatment, a first material pool for soaking the crushed forage is arranged behind the crusher, a first-stage spiral dewatering machine for carrying out primary dewatering treatment on the forage is arranged behind the first material pool, a second material pool for carrying out secondary dewatering treatment on the forage is arranged behind the first-stage spiral dewatering machine, a second-stage spiral dewatering machine for carrying out secondary dewatering treatment on the forage is arranged behind the second material pool, a slurry pool is arranged behind the second-stage spiral dewatering machine, and a first mill, a third dewatering machine, a slurry soaking pool, a second mill and a fourth dewatering machine are sequentially arranged behind the slurry pool. The utility model has no emission of harmful substances during working, excellent environmental protection performance, convenient operation and high efficiency.
Description
Technical Field
The utility model relates to a system for producing cellulose from agricultural straws.
Background
As an agricultural waste, the straw is generally treated by adopting methods such as incineration and the like, so that resources are wasted and the environment is polluted; the existing straw decomposition method adopts an alkali or acid chemical method, and also adopts a chemical-mechanical method combining chemistry and machinery or a chemical-physical method, and the treatment methods have sewage, discharge and are harmful to the environment.
Disclosure of Invention
The utility model aims to provide a system for producing cellulose from agricultural straws, which is simple and efficient in method.
The technical scheme of the utility model is as follows:
a system for producing cellulose from agricultural straw, characterized by: the straw dewatering machine comprises a crusher for crushing straw and forage subjected to fermentation treatment, a first material pool for soaking the crushed forage is arranged behind the crusher, a first-stage spiral dewatering machine for carrying out primary dewatering treatment on the forage is arranged behind the first material pool, a second material pool for carrying out secondary dewatering treatment on the forage is arranged behind the first-stage spiral dewatering machine, a second-stage spiral dewatering machine for carrying out secondary dewatering treatment on the forage is arranged behind the second material pool, a slurry pool is arranged behind the second-stage spiral dewatering machine, and a first mill, a third dewatering machine, a slurry soaking pool, a second mill and a fourth dewatering machine are sequentially arranged behind the slurry pool.
And a drying device is additionally arranged for drying the liquid with 25-35% of solid content discharged by the primary dehydrator.
The utility model has no emission of harmful substances during working, excellent environmental protection performance, convenient operation and high efficiency. The utility model washes the forage, washes the pulp, the waste water can be regarded as the fertilizer; is significantly different from the traditional pulp preparation which only washes materials and generates more wastewater.
The utility model is further described below with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic diagram of the structure of an embodiment of the present utility model.
Detailed Description
A system for producing cellulose from agricultural straw comprises a crusher 1 for crushing straw and grass subjected to fermentation treatment, a first material pool 2 for soaking the crushed straw and grass, a first spiral dehydrator 3 for carrying out primary dehydration treatment on the grass, a second material pool 4 for carrying out secondary dehydration treatment on the grass, a second spiral dehydrator 5 for carrying out secondary dehydration treatment on the grass, a slurry pool 6 for carrying out slurry treatment on the grass, a first grinder 7 for grinding the slurry, a third dehydrator 8 for soaking the slurry treatment, a slurry soaking pool 9 for soaking the slurry treatment, a second grinder 10 for carrying out secondary grinding, and a fourth dehydrator 11 for carrying out secondary dehydration treatment. The dewatering of the third dewatering machine and the fourth dewatering machine is to add water to clean (i.e. wash) the forage after the treatment of the slurry pool.
And a drying device 12 is further arranged for drying the liquid with 25-35% of solid content discharged by the primary dehydrator.
The working method of the utility model comprises the following steps:
(1) Crushing straw forage subjected to fermentation treatment, then entering a first material pool, adding liquid extruded by a second dehydrator, stirring, entering a first dehydrator, and entering a second material pool from the forage extruded by the first dehydrator, wherein the extruded liquid is humic acid water and fertilizer, and the solid content is 10-30%;
(2) The forage enters a second material pool, liquid filtered by three times of dehydration (pressure screen) is added into the second material pool, stirred and then conveyed into a secondary dehydrator, and the extruded water enters a first material pool; the extruded forage enters a slurry pool, the solid content is 35-45%, and the concentration of the extruded liquid is 3-8%;
(3) And sequentially carrying out first grinding machine, third dewatering, soaking in a pulp soaking pool, second grinding machine and fourth dewatering treatment on the forage treated by the pulp pool to obtain a cellulose product.
During crushing treatment, the solid content of the straw after fermentation treatment is 40-50%; the solid content of the forage entering the primary dehydrator is 20-25%, and the solid content of the extruded forage is 30-40%; the solid content of the forage entering the secondary dehydrator is 15-20%, and the solid content of the extruded forage is 30-40%.
The water obtained by three times of dehydration and four times of dehydration is reused for the front end (including water for washing grass and the like); thus, the quantity of the extrusion liquid is controlled, the concentration of the extrusion liquid is improved, water can be saved, and the heat energy consumed by concentrating the liquid can be reduced.
The primary dehydrator is provided with a liquid with 25-35% of solid content in the discharge part except that the forage is extruded from the extrusion port and enters the secondary dehydrator, and the finished product is obtained after drying treatment.
After four times of dehydration, further carrying out 1-times of dehydration treatment; or removing four dehydrations.
The straw is replaced by other non-grain biological materials; the other non-grain biological materials include, but are not limited to, reed, branch, wood, bamboo, hemp stalk, chinese alpine rush, and megaterium.
Claims (2)
1. A system for producing cellulose from agricultural straw, characterized by: the straw dewatering machine comprises a crusher for crushing straw and forage subjected to fermentation treatment, a first material pool for soaking the crushed forage is arranged behind the crusher, a first-stage spiral dewatering machine for carrying out primary dewatering treatment on the forage is arranged behind the first material pool, a second material pool for carrying out secondary dewatering treatment on the forage is arranged behind the first-stage spiral dewatering machine, a second-stage spiral dewatering machine for carrying out secondary dewatering treatment on the forage is arranged behind the second material pool, a slurry pool is arranged behind the second-stage spiral dewatering machine, and a first mill, a third dewatering machine, a slurry soaking pool, a second mill and a fourth dewatering machine are sequentially arranged behind the slurry pool.
2. The system for producing cellulose from agricultural straw according to claim 1, wherein: and a drying device is additionally arranged for drying the liquid with 25-35% of solid content discharged by the primary dehydrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320596349.0U CN219862106U (en) | 2023-03-24 | 2023-03-24 | System for producing cellulose from agricultural straw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320596349.0U CN219862106U (en) | 2023-03-24 | 2023-03-24 | System for producing cellulose from agricultural straw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219862106U true CN219862106U (en) | 2023-10-20 |
Family
ID=88317960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320596349.0U Active CN219862106U (en) | 2023-03-24 | 2023-03-24 | System for producing cellulose from agricultural straw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219862106U (en) |
-
2023
- 2023-03-24 CN CN202320596349.0U patent/CN219862106U/en active Active
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| GR01 | Patent grant |