CN118291160A - Rice straw normal pressure carbonization system and rice straw normal pressure carbonization method - Google Patents
Rice straw normal pressure carbonization system and rice straw normal pressure carbonization method Download PDFInfo
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- CN118291160A CN118291160A CN202410499028.8A CN202410499028A CN118291160A CN 118291160 A CN118291160 A CN 118291160A CN 202410499028 A CN202410499028 A CN 202410499028A CN 118291160 A CN118291160 A CN 118291160A
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- Prior art keywords
- rice straw
- carbonization
- discharging pipe
- sieve
- aperture
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- 238000003763 carbonization Methods 0.000 title claims abstract description 92
- 239000010902 straw Substances 0.000 title claims abstract description 54
- 241000209094 Oryza Species 0.000 title claims abstract description 51
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 51
- 235000009566 rice Nutrition 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012216 screening Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 56
- 239000000779 smoke Substances 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 claims 2
- 239000002994 raw material Substances 0.000 abstract description 31
- 239000002245 particle Substances 0.000 abstract description 18
- 238000010000 carbonizing Methods 0.000 abstract description 5
- 239000002028 Biomass Substances 0.000 description 8
- 235000013339 cereals Nutrition 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000001965 increasing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a rice straw normal pressure carbonization system and a rice straw normal pressure carbonization method. The normal-pressure carbonization method of the rice straw comprises the following steps: crushing rice straw, drying the rice straw, using the rice straw normal pressure carbonization system, selecting carbonization time and carbonization temperature according to proper proportion, and carbonizing the crushed rice straw; by adopting the technical scheme of the invention, the raw materials with reasonable particle size meeting the process requirement are screened out by twice screening, the particle size distribution of the raw materials is uniform, the raw materials are carbonized uniformly everywhere, and the carbonization quality is improved.
Description
Technical Field
The invention relates to the technical field of biomass raw material carbonization, in particular to a rice straw normal pressure carbonization system and a rice straw normal pressure carbonization method.
Background
In recent years, the fertilizer utilization of biomass such as crop straws is paid attention to, wherein biomass charcoal formed by carbonizing the crop straws is applied to the production of compound fertilizers, has remarkable soil improvement and crop yield increasing effects, and in addition, the biomass charcoal formed by carbonizing the crop straws is beneficial to reducing the emission of greenhouse gases such as carbon dioxide and has good promotion effect on the development of low-carbon agriculture and soil carbon fixation.
For example, publication No.: the patent application of CN213202919U discloses a carbonization device for biomass particle production, which comprises a base plate, the upper surface fixedly connected with transport case of bottom plate, the interior bottom wall fixedly connected with servo motor of transport case, servo motor's output fixedly connected with screw transportation pole, the top fixedly connected with carbonization case of transport case, one side fixedly connected with agitator motor of carbonization case, agitator motor's output fixedly connected with puddler, the surface fixedly connected with stirring leaf of puddler. According to the technology, through the arrangement of the crushing roller and the screen plate, the problems that the sizes of biomass particles are different and carbonization of large-particle biomass particles is incomplete are solved, and the carbonization rate of the biomass particles is guaranteed, however, through experimental research, the main factors affecting the carbonization process are as follows: the raw material moisture content, carbonization temperature, carbonization speed, carbonization pressure and raw material particle size are all carried out under normal pressure in the existing mass production process, so that the carbonization process of various raw materials basically keeps the same carbonization pressure, the raw material particle size has great influence on the carbonization process, when the raw material particle size is smaller, the larger the specific surface area of the raw material is, the better the dispersibility and fluidity of the raw material is, the higher the carbonization speed is, and the carbonization quality is higher, but in the mass production, if the local raw material particle size is too small, the local raw material is excessively carbonized, and the carbonization quality is also influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rice straw normal pressure carbonization system and a rice straw normal pressure carbonization method.
The invention is realized by the following technical scheme.
The invention provides a rice straw normal-pressure carbonization system which comprises a carbonization furnace and a screening device, wherein the screening device comprises a feeding pipe, a first discharging pipe, a second discharging pipe and a third discharging pipe, the first discharging pipe is communicated with the feeding pipe, one end of the second discharging pipe is communicated with the first discharging pipe, a first sieve plate is arranged at the joint of the first discharging pipe and the second discharging pipe, the other end of the second discharging pipe is communicated with the carbonization furnace, the third discharging pipe is communicated with the second discharging pipe, a second sieve plate is arranged at the joint of the third discharging pipe and the second discharging pipe, a plurality of first sieve holes are formed in the surface of the first sieve plate, a plurality of second sieve holes are formed in the surface of the second sieve plate, and the aperture of the first sieve holes is larger than that of the second sieve holes.
And motors are further arranged on the first discharging pipe and the second discharging pipe, an output shaft of each motor is connected with the wheel disc through a flat key, the wheel disc is further hinged with one end of the connecting rod, the other end of the connecting rod is hinged with the supporting seat, and the supporting seat is fixedly connected with the first sieve plate and the second sieve plate respectively.
The left and right sides of first sieve, the left and right sides of second sieve link firmly with the slider respectively, and the slider overlaps with the guide rail, and the guide rail links firmly on the inner wall of first discharging pipe, second discharging pipe respectively.
The length direction of the guide rail is respectively consistent with the length direction of the first discharging pipe and the length direction of the second discharging pipe.
The ratio of the aperture of the first sieve aperture to the aperture of the second sieve aperture is not more than 2.
The tail end of the first discharging pipe and the tail end of the third discharging pipe are respectively communicated with a collecting pipe, the tail end of the collecting pipe stretches into the incineration tower, a smoke exhaust pipe is arranged at the top of the incineration tower, the carbonization furnace is packaged in the furnace box, and the tail end of the smoke exhaust pipe is communicated with the furnace box.
And a screw conveyer is also arranged in the collecting pipe.
In addition, the invention also provides a normal-pressure carbonization method for the rice straw, which is characterized in that: the method comprises the following steps:
Step one: crushing rice straw;
Step two: drying rice straw at constant temperature of 200deg.C to reduce water content below 20%;
step three: using the normal-pressure carbonization system for the rice straw, putting the crushed rice straw into the feeding pipe, feeding the crushed rice straw into the carbonization furnace through the second discharging pipe for carbonization treatment, and controlling carbonization time and carbonization temperature according to the following steps:
Wherein t is the carbonization time of the rice straw, and the unit is hour; d 1 is the aperture of the first sieve aperture, D 2 is the aperture of the second sieve aperture, and the units are all mm; t is the carbonization temperature in the carbonization furnace, and the unit is the temperature; k is a mass distribution coefficient, taking k=80;
Step four: collecting rice straw carbon from the carbonization furnace.
In the third step, the aperture of the first sieve aperture is 40mm, the aperture of the second sieve aperture is 20mm, and the carbonization temperature in the carbonization furnace is 700-900 ℃.
The implementation sequence of the first step and the second step can be exchanged.
The invention has the beneficial effects that: according to the technical scheme, the raw materials are screened through the first screen plate, so that the raw materials with the particle size smaller than the diameter of the first screen holes are screened through the second screen plate, and the particle size of the raw materials tends to be uniform within a reasonable range; in addition, in the process of carbonizing the rice straw, proper carbonization time and carbonization temperature are selected according to the average particle size of the raw materials, so that the raw materials are uniformly carbonized everywhere, and the carbonization quality is further ensured.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of a portion of the invention at I in FIG. 1;
Fig. 3 is a left side view of the present invention at the first screening deck of fig. 2;
Fig. 4 is a right side view of the present invention at the second screening deck of fig. 2.
In the figure: the device comprises a 1-carbonization furnace, a 2-screening device, a 3-feeding pipe, a 4-first discharging pipe, a 5-second discharging pipe, a 6-third discharging pipe, a 7-first sieve plate, an 8-second sieve plate, a 9-motor, a 10-wheel disc, an 11-connecting rod, a 12-supporting seat, a 13-sliding block, a 14-guide rail, a 15-collecting pipe, a 16-incineration tower, a 17-smoke exhaust pipe, an 18-oven and a 19-screw conveyor.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the above.
The invention provides a normal-pressure carbonization system for rice straw, which is shown in figures 1 to 4 and comprises a carbonization furnace 1 and a screening device 2, wherein the screening device 2 comprises a feed pipe 3, a first discharge pipe 4, a second discharge pipe 5 and a third discharge pipe 6, the first discharge pipe 4 is communicated with the feed pipe 3, one end of the second discharge pipe 5 is communicated with the first discharge pipe 4, a first sieve plate 7 is arranged at the joint of the first discharge pipe 4 and the second discharge pipe 5, the other end of the second discharge pipe 5 is communicated with the carbonization furnace 1, the third discharge pipe 6 is communicated with the second discharge pipe 5, a second sieve plate 8 is arranged at the joint of the third discharge pipe 6 and the second discharge pipe 5, a plurality of first sieve holes are formed in the surface of the first sieve plate 7, a plurality of second sieve holes are formed in the surface of the second sieve plate 8, and the aperture of the first sieve holes is larger than that of the second sieve holes.
According to the technical scheme, the raw materials are screened through the first screen plate, so that the raw materials with the particle size smaller than the diameter of the first screen holes are screened through the second screen plate, and the particle size of the raw materials tends to be uniform within a reasonable range; in addition, in the process of carbonizing the rice straw, proper carbonization time and carbonization temperature are selected according to the average particle size of the raw materials, so that the raw materials are uniformly carbonized everywhere, and the carbonization quality is further ensured.
Specifically, the first discharging pipe 4 and the second discharging pipe 5 are further provided with a motor 9, an output shaft of the motor 9 is connected with a wheel disc 10 through a flat key, the wheel disc 10 is further hinged with one end of a connecting rod 11, the other end of the connecting rod 11 is hinged with a supporting seat 12, and the supporting seat 12 is fixedly connected with the first sieve plate 7 and the second sieve plate 8 respectively. The left and right sides of the first sieve plate 7 and the left and right sides of the second sieve plate 8 are respectively and fixedly connected with a sliding block 13, the sliding block 13 is sleeved with a guide rail 14, and the guide rail 14 is respectively and fixedly connected to the inner walls of the first discharging pipe 4 and the second discharging pipe 5. The longitudinal direction of the guide rail 14 preferably corresponds to the longitudinal direction of the first tapping pipe 4 and the longitudinal direction of the second tapping pipe 5, respectively. By adopting the technical scheme of the invention, the motor 9, the wheel disc 10, the connecting rod 11 and the supporting seat 12 respectively form a crank sliding block mechanism with the first sieve plate 7 and the second sieve plate 8, so that raw materials reciprocate along the inner walls of the first discharging pipe 4 and the second discharging pipe 5 respectively along with the first sieve plate 7 and the second sieve plate 8, the raw materials are screened, and the grain size distribution is finally screened out through twice screening, and the grain size of the raw materials is not too large or too small, so that the raw materials uniformly carbonize everywhere, thereby being beneficial to improving the carbonization speed and the carbonization quality.
In addition, it is preferable that the ratio of the aperture diameter of the first mesh to the aperture diameter of the second mesh is not more than 2. The aperture of the first sieve mesh is 40mm, and the aperture of the second sieve mesh is 20mm.
Specifically, the tail end of the first discharging pipe 4 and the tail end of the third discharging pipe 6 are respectively communicated with a collecting pipe 15, the tail end of the collecting pipe 15 stretches into the incineration tower 16, a smoke exhaust pipe 17 is arranged at the top of the incineration tower 16, the carbonization furnace 1 is packaged in a furnace box 18, and the tail end of the smoke exhaust pipe 17 is communicated with the furnace box 18. A screw conveyor 19 is also preferably mounted within the collector tube 15. By adopting the technical scheme of the invention, the raw materials with oversized grain size and the raw materials with undersized grain size screened by the first discharging pipe 4 and the third discharging pipe 6 are sent into the incinerator to be burnt, and the high-temperature flue gas generated after burning further heats the carbonization furnace, so that the purpose of making full use of things is realized, and the waste of resources is reduced.
In addition, the invention also provides a normal-pressure carbonization method of the rice straw, which comprises the following steps:
Step one: crushing rice straw;
Step two: drying rice straw at constant temperature of 200deg.C to reduce water content below 20%;
Step three: using the normal pressure carbonization system for rice straw, the crushed rice straw is put into a feed pipe 3 and is sent into a carbonization furnace 1 through a second discharge pipe 5 for carbonization treatment, and the carbonization time and carbonization temperature are controlled according to the following steps:
Wherein t is the carbonization time of the rice straw, and the unit is hour; d 1 is the aperture of the first sieve aperture, D 2 is the aperture of the second sieve aperture, and the units are all mm; t is the carbonization temperature in the carbonization furnace 1, and the unit is the temperature; k is a mass distribution coefficient, taking k=80;
Step four: collecting rice straw charcoal from the carbonization furnace 1.
Specifically, in the third step, the aperture of the first sieve aperture is 40mm, the aperture of the second sieve aperture is 20mm, and the carbonization temperature in the carbonization furnace 1 is 700-900 ℃. The implementation sequence of the first step and the second step can be exchanged. By adopting the technical scheme of the invention, proper carbonization time and carbonization temperature are selected according to the average particle size of the raw materials, so that the raw materials are carbonized uniformly everywhere, and the carbonization quality is further ensured.
Claims (10)
1. A rice straw normal pressure carbomorphism system, its characterized in that: including retort (1) and screening plant (2), screening plant (2) include inlet pipe (3), first discharging pipe (4), second discharging pipe (5) and third discharging pipe (6), first discharging pipe (4) with inlet pipe (3) intercommunication, the one end of second discharging pipe (5) with first discharging pipe (4) intercommunication, and the junction of first discharging pipe (4) and second discharging pipe (5) is equipped with first sieve (7), the other end of second discharging pipe (5) with retort (1) intercommunication, third discharging pipe (6) with second discharging pipe (5) intercommunication, and the junction of third discharging pipe (6) and second discharging pipe (5) is equipped with second sieve (8), the surface of first sieve (7) is equipped with a plurality of first sieve mesh, the surface of second sieve (8) is equipped with a plurality of second sieve mesh, the aperture of first sieve is greater than the aperture of second sieve mesh.
2. A rice straw atmospheric carbonization system according to claim 1, wherein: a motor (9) is also arranged on the first discharging pipe (4) and the second discharging pipe (5), the output shaft of the motor (9) is connected with the wheel disc (10) through a flat key, the wheel disc (10) is also hinged with one end of the connecting rod (11), the other end of the connecting rod (11) is hinged with the supporting seat (12), and the supporting seat (12) is fixedly connected with the first sieve plate (7) and the second sieve plate (8) respectively.
3. A rice straw atmospheric charring system as recited in claim 3, wherein: the left and right sides of first sieve (7), the left and right sides of second sieve (8) link firmly with slider (13) respectively, slider (13) and guide rail (14) nest, and guide rail (14) link firmly on the inner wall of first discharging pipe (4), second discharging pipe (5) respectively.
4. A rice straw atmospheric charring system as recited in claim 3, wherein: the length direction of the guide rail (14) is respectively consistent with the length direction of the first discharging pipe (4) and the length direction of the second discharging pipe (5).
5. A rice straw atmospheric carbonization system according to claim 1, wherein: the ratio of the aperture of the first sieve aperture to the aperture of the second sieve aperture is not more than 2.
6. A rice straw atmospheric carbonization system according to claim 1, wherein: the tail end of the first discharging pipe (4) and the tail end of the third discharging pipe (6) are respectively communicated with the collecting pipe (15), the tail end of the collecting pipe (15) stretches into the incinerator (16), the top of the incinerator (16) is provided with a smoke exhaust pipe (17), the carbonization furnace (1) is packaged in the furnace box (18), and the tail end of the smoke exhaust pipe (17) is communicated with the furnace box (18).
7. A rice straw atmospheric charring system as recited in claim 6, wherein: a screw conveyor (19) is also arranged in the collecting pipe (15).
8. A normal pressure carbonization method for rice straw is characterized in that: the method comprises the following steps:
Step one: crushing rice straw;
Step two: drying rice straw at constant temperature of 200deg.C to reduce water content below 20%;
Step three: using the normal pressure carbonization system for rice straw according to any one of claims 1 to 8, feeding crushed rice straw into the feed pipe (3), and feeding the crushed rice straw into the carbonization furnace (1) via the second discharge pipe (5) for carbonization treatment, and controlling the carbonization time and carbonization temperature according to the following formula:
Wherein t is the carbonization time of the rice straw, and the unit is hour; d 1 is the aperture of the first sieve aperture, D 2 is the aperture of the second sieve aperture, and the units are all mm; t is the carbonization temperature in the carbonization furnace (1), and the unit is the temperature; k is a mass distribution coefficient, taking k=80;
step four: collecting rice straw carbon from the carbonization furnace (1).
9. A method for atmospheric charring of rice straw according to claim 8, wherein: in the third step, the aperture of the first sieve aperture is 40mm, the aperture of the second sieve aperture is 20mm, and the carbonization temperature in the carbonization furnace (1) is 700-900 ℃.
10. A method for atmospheric charring of rice straw according to claim 8, wherein: the implementation sequence of the first step and the second step can be exchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410499028.8A CN118291160A (en) | 2024-04-24 | 2024-04-24 | Rice straw normal pressure carbonization system and rice straw normal pressure carbonization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410499028.8A CN118291160A (en) | 2024-04-24 | 2024-04-24 | Rice straw normal pressure carbonization system and rice straw normal pressure carbonization method |
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| Publication Number | Publication Date |
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| CN118291160A true CN118291160A (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410499028.8A Pending CN118291160A (en) | 2024-04-24 | 2024-04-24 | Rice straw normal pressure carbonization system and rice straw normal pressure carbonization method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942313A (en) * | 2010-07-27 | 2011-01-12 | 沈阳成大弘晟能源研究院有限公司 | Huadian type process and device for dry distillation of oil shale |
| US20110278149A1 (en) * | 2009-05-11 | 2011-11-17 | Andreas Hornung | Staged biomass pyrolysis process and apparatus |
| CN108160259A (en) * | 2017-11-23 | 2018-06-15 | 长沙双合盛企业管理有限公司 | A kind of sandstone two level screening plant |
| CN210065652U (en) * | 2019-06-05 | 2020-02-14 | 安徽瑞松生物质能源有限公司 | Carbonization machine for biomass particles |
| CN210935832U (en) * | 2019-10-01 | 2020-07-07 | 麻阳归臻堂实业有限公司 | Screening plant is used in herbal pieces-processing |
| CN213202919U (en) * | 2020-09-03 | 2021-05-14 | 济南绿之源环保机械有限公司 | Carbonization equipment for biomass particle production |
-
2024
- 2024-04-24 CN CN202410499028.8A patent/CN118291160A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110278149A1 (en) * | 2009-05-11 | 2011-11-17 | Andreas Hornung | Staged biomass pyrolysis process and apparatus |
| CN101942313A (en) * | 2010-07-27 | 2011-01-12 | 沈阳成大弘晟能源研究院有限公司 | Huadian type process and device for dry distillation of oil shale |
| CN108160259A (en) * | 2017-11-23 | 2018-06-15 | 长沙双合盛企业管理有限公司 | A kind of sandstone two level screening plant |
| CN210065652U (en) * | 2019-06-05 | 2020-02-14 | 安徽瑞松生物质能源有限公司 | Carbonization machine for biomass particles |
| CN210935832U (en) * | 2019-10-01 | 2020-07-07 | 麻阳归臻堂实业有限公司 | Screening plant is used in herbal pieces-processing |
| CN213202919U (en) * | 2020-09-03 | 2021-05-14 | 济南绿之源环保机械有限公司 | Carbonization equipment for biomass particle production |
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