CN113388495A - Vertical anaerobic digestion reactor for high-content inherent organic materials - Google Patents
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Abstract
The invention provides a vertical anaerobic digestion reactor containing high-content intrinsic organic materials, which comprises a barrel body, a feed inlet arranged at the upper part of the barrel body, a discharge outlet arranged at the lower part of the barrel body and clapboards arranged in the barrel body, wherein the clapboards comprise at least one first clapboard or a combination of at least one first clapboard and one second clapboard; the circumferential side wall of the clapboard is connected with the inner wall of the barrel body, and the clapboard is provided with at least one discharge opening; or a gap is arranged between the circumferential side wall of the clapboard and the inner wall of the barrel body to form at least one discharge opening. The reactor provided by the invention can improve the stirring uniformity of materials, effectively control the flow and mass transfer of the materials in the whole area in the reactor, effectively limit the longitudinal movement of the materials by combining a plurality of transverse internal components in the reactor, and increase the close contact between the materials and anaerobic microorganisms.
Description
Technical Field
The invention relates to the technical field of solid waste treatment, in particular to a vertical anaerobic digestion reactor for high-inherent-organic-content materials.
Background
The anaerobic digestion reactor for high solid content garbage can be divided into a vertical reactor and a horizontal reactor according to the material moving direction. The vertical reactor occupies small area and is suitable for large-scale industrial treatment of the municipal solid waste with short land. The traditional wet anaerobic fermentation technology is mainly based on a vertical reactor (such as CSTR or UASB). The stirring in the reactor is the key for providing an anaerobic digestion uniform environment and promoting the anaerobic digestion efficiency. Because the viscosity of the high-solid-content material is large and the material flows along the gravity direction, the vertical mechanical stirring has the problems of large stirring resistance and difficult stirring. Therefore, the generated biogas is pressurized and then introduced into the reactor to generate shear flow, so that the materials in the reactor are uniformly mixed, and two modes, namely bottom blowing and jacket circulation, are generally adopted. The gas stirring can make the material flow violently, but the device is relatively complicated, and power consumption is also great, and causes the gas nozzle easily to block up in the operation, and the maintenance is more difficult.
The traditional vertical reactor generally has only a few transverse internal components, can only improve the flow and mass transfer of local areas near the internal components, cannot limit the longitudinal movement of materials, and is not beneficial to the regional distribution and ecological optimization of functional flora in the reactor.
Disclosure of Invention
Aiming at the defects, the invention provides the vertical anaerobic digestion reactor for the materials with high inherent content, which can improve the stirring uniformity of the materials, effectively control the flow and mass transfer of the materials in the whole area of the reactor, effectively limit the longitudinal movement of the materials by combining a plurality of transverse internal components in the reactor, increase the close contact between the materials and anaerobic microorganisms, and solve the problems of large consumption of gas stirring power and vertical mechanical stirring power of the conventional reactor and uneven mixing of the materials.
The invention provides the following technical scheme: a vertical anaerobic digestion reactor containing high-content inherent organic materials comprises a barrel body, a feed inlet arranged at the upper part of the barrel body, a discharge outlet arranged at the lower part of the barrel body and a partition plate arranged in the barrel body, wherein the partition plate comprises at least one first partition plate or a combination of at least one first partition plate and one second partition plate;
a plurality of local reaction chambers are formed among the partition plates and are sequentially distributed from the upper part to the lower part of the barrel body, and at least one horizontal stirring device is arranged in each local reaction chamber;
the circumferential side wall of the partition plate is connected with the inner wall of the barrel body, and at least one discharge opening is formed in the partition plate; or a gap is formed between the circumferential side wall of the clapboard and the inner wall of the barrel body so as to form at least one discharge opening; the discharge openings of two adjacent local reaction chambers are staggered.
Further, when the partition plate includes at least one first partition plate, the at least one first partition plate is continuously staggered.
Further, when the partition plates include at least one first partition plate and at least one second partition plate, the at least one first partition plate and the at least one second partition plate are alternately arranged in the barrel body at intervals in the vertical direction.
Further, each first partition plate is provided with a first discharge opening.
Furthermore, two second discharge openings are formed in a gap between each second partition plate and the side walls of the two sides of the barrel body, and the two second discharge openings of each second partition plate are arranged in a central symmetry mode about the central axis of the barrel body.
Further, the partition plate is horizontally arranged or obliquely arranged.
Further, when the partition plate is obliquely arranged, the partition plate is inclined upwards or downwards along the material discharging direction.
Further, an insulating layer is arranged on the outer wall of the barrel body.
Furthermore, the stirring device comprises a motor, a stirring shaft and a stirring paddle, wherein the stirring shaft is positioned in the barrel body, two ends of the stirring shaft are rotatably connected to the inner wall of the barrel body through bearings, one end of the stirring shaft can be rotatably connected to the barrel body and is arranged in a cantilever manner, and at least one end part of the stirring shaft penetrates through the side wall of the barrel body and extends out of the barrel body; the motor is fixed on the outer wall of the barrel body, an output shaft of the motor is mechanically connected with one end, penetrating through the side wall of the barrel body, of the stirring shaft, and the stirring paddle is installed on the stirring shaft. The direction and the size of the thrust action of the stirring paddle can be realized by adjusting the rotating speed of the motor and configuring the style and the size of the paddle according to actual conditions.
Further, the stirring device is vertical or parallel to the flowing direction of the materials in the local reaction chamber.
The invention has the beneficial effects that:
the invention provides a vertical reactor for continuous anaerobic fermentation of high-inherent-content garbage, which can effectively control the flow and mass transfer of materials in the whole area in the reactor, and a plurality of transverse internal components in the reactor are combined to effectively limit the longitudinal movement of the materials and increase the close contact between the materials and anaerobic microorganisms. By adopting the vertical anaerobic digestion reactor containing high-inherent-content organic materials, the barrel body is divided into the plurality of local reaction chambers by the continuous staggered arrangement of the first partition plates or the continuous arrangement of the combination of the first partition plates and the second partition plates, and the stirring devices which are independently configured for each local reaction chamber are arranged, so that the materials can undergo different reaction stages in different reaction chambers in the processes of feeding to discharging. In addition, through the first discharge opening that sets up on the first baffle to and the setting of two second discharge openings that set up on the second baffle, make the in-process of material unloading in the staving, the unloading route that it passed through becomes the multichannel, can avoid effectively like this because the obstructed condition that single unloading route leads to takes place, make the reaction sequence safe and reliable more.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 is a schematic structural view of a vertical anaerobic digestion reactor for highly indigenous organic materials in example 1 of the present invention;
FIG. 2 is a schematic structural view of a method for arranging the transverse internals and the stirring device in the vertical anaerobic digestion reactor for high organic materials in accordance with example 2 of the present invention;
FIG. 3 is a schematic view of a vertical anaerobic digestion reactor with high organic matter content and with downward inclined transverse partitions according to example 3 of the present invention;
FIG. 4 is a schematic view of a vertical anaerobic digestion reactor with high organic matter content and with upward inclined transverse partitions according to example 3 of the present invention;
in the figure: 1-barrel body, 2-first clapboard, 2-1-first discharge opening, 3-second clapboard, 3-1-second discharge opening, 4-horizontal stirring device, 6-feed opening, 7-discharge opening and 8-reaction chamber.
Detailed description of the preferred embodiments
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on structures shown in the drawings, and are only used for convenience in describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.
In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in light of the present general concepts, in connection with the specific context of the scheme.
The invention provides a vertical anaerobic digestion reactor containing high-content inherent organic materials, which comprises a barrel body 1, a feed inlet 6 arranged at the upper part of the barrel body, a discharge outlet 7 arranged at the lower part of the barrel body and a clapboard arranged in the barrel body, wherein the clapboard comprises at least one first clapboard 2 or a combination formed by combining at least one first clapboard with at least one second clapboard 3;
a plurality of local reaction chambers are formed among the partition plates and are sequentially distributed from the upper part to the lower part of the barrel body, and at least one horizontal stirring device 4 is arranged in each local reaction chamber;
the circumferential side wall of the clapboard is connected with the inner wall of the barrel body, and the clapboard is provided with at least one discharge opening; or a gap is arranged between the circumferential side wall of the clapboard and the inner wall of the barrel body to form at least one discharge opening; the discharge openings of two adjacent partial reaction chambers are staggered.
When the separators include at least one first separator 2, the at least one first separator 2 is continuously staggered.
When the partition plates comprise at least one first partition plate 2 and at least one second partition plate 3, the at least one first partition plate 2 and the at least one second partition plate 3 are alternately arranged in the barrel body at intervals vertically.
Each first clapboard 2 is provided with a first discharge opening 2-1; two second discharge openings 3-1 are formed in the gaps between the second partition plates 3 and the side walls on the two sides of the barrel body, and the two second discharge openings 3-1 of each second partition plate are arranged in central symmetry relative to the central axis of the barrel body.
The baffle sets up or the slope sets up, and when the baffle slope set up, the baffle is along the ejection of compact direction of material upwards or the downward sloping. The outer wall of the barrel body is provided with a heat preservation layer. The stirring device comprises a motor, a stirring shaft and a stirring paddle, wherein the stirring shaft is positioned in the barrel, the two ends of the stirring shaft are rotatably connected onto the inner wall of the barrel through bearings, one end of the stirring shaft can be rotatably connected onto the barrel in a cantilever mode, one end part of the stirring shaft penetrates through the side wall of the barrel and extends out of the barrel, the motor is fixed onto the outer wall of the barrel, the output shaft of the motor is mechanically connected with one end of the stirring shaft, which penetrates through the side wall of the barrel, and the stirring paddle is installed on the stirring shaft. The stirring device is vertical or parallel to the flowing direction of the materials in the local reaction chamber.
According to the requirement of anaerobic digestion to be actually achieved, the first partition plates 2 can be independently and continuously arranged, a plurality of vertical continuous local separation chambers are formed in the barrel body, the first partition plates 2 and the second partition plates 3 can also be selected to form one local separation chamber, then the first partition plates 2 and the second partition plates 3 are alternately arranged at intervals to form a plurality of vertical continuous local separation chambers, so that vertical downward flow paths of various indoor decomposed objects are formed, and the decomposed objects in the anaerobic digestion chamber can be fully stirred and digested by the aid of the mode that each local decomposition chamber can be arranged at any angle in the approximate horizontal plane direction, so that the phenomenon of incomplete decomposition is avoided, the stirring devices are independent, the rotating speed can be independently adjusted, and the material movement period is controlled.
Example 1
As shown in fig. 1, the vertical anaerobic digestion reactor with high content of indigenous organic materials provided for this embodiment comprises a barrel body 1, a first partition plate 2, a second partition plate 3 and a horizontal stirring device 4.
The upper part of the barrel body 1 is provided with a feed inlet 6, and the lower part is provided with a discharge outlet 7. For the metal barrel body 1, the bottom of the barrel body 1 is arranged into a funnel shape, so that the blanking is convenient, and the material deposition is prevented.
In this embodiment, the discharge opening is configured as a gap between the circumferential side walls of the first partition plate 2 and the second partition plate 3 and the inner wall of the barrel body 1. Wherein the discharge opening is also used for a channel for discharging the biogas of the reaction products.
In this embodiment, set up baffle 2 and be the flat board, fix in staving 1 through welding or bolted connection's mode.
A horizontal stirring device 4 is arranged in the partial reaction chamber 8. For example, in the present embodiment, two partition plates 2 are provided so as to divide three partial reaction chambers 8 in the tub 1, and in another embodiment, the number of the partition plates 2 may be other values.
In this embodiment, the partition plates 2 are all horizontally arranged, and the materials move in the local reaction chamber 8 of the upper layer by virtue of the stirring action of the horizontal stirring device 4 and the pressure given by the materials in the local reaction chamber 8 of the upper layer, so that the blanking is performed, and the like. And, in case that the first partition plate 2 and the second partition plate 3 are horizontally disposed, the stirring shaft in the stirring device 3 is preferably arranged in parallel to the discharging direction of the material and at the middle position of the tub 1.
The material enters the reactor from the feeding hole, moves horizontally along the first clapboard 2 and takes the accumulation and extrusion of the newly fed material as the driving force. And the first discharge opening 2-1 falls into a new local reaction area due to gravity, and the first discharge opening 2-1 is positioned at the central axis of the reaction area. The material moves along the second clapboard 3 to the periphery horizontally and falls into a new local reaction area due to gravity when reaching the second discharge opening 3-1. The material is repeatedly moved along the first partition plate 2 horizontally toward the central axis of the reactor. Each horizontal stirring device is installed between adjacent partition plates or at the position of a partition plate discharge opening according to requirements, and different rotating speeds are set according to the reaction stage where materials in the current local reaction area are located. And discharging the materials from the discharge port after the reaction is finished.
So set up for the material just can discharge from discharge gate 7 from a plurality of local reaction chamber 8 in proper order after throwing into from feed inlet 6 on staving 1 upper portion, and this in-process that just makes the material from the feeding to the ejection of compact can experience different reaction stages in each local reaction chamber 8, and because each reaction stage material water content and viscosity are also different, consequently the size and the power of the suitable agitating unit 4 of local reaction chamber 8 configuration for different reaction stages are also different. For example, in the initial stage of the reaction, the solid content of the material is higher, and the stirring resistance is higher, so that a stirring shaft with larger size and a motor with larger power are arranged for the stirring device 3 configured in the upper partial reaction chamber 8; the material generates water in the later stage of the reaction, so that the stirring resistance is reduced, and a stirring device 4 configured for the lower partial reaction chamber 8 is provided with a stirring shaft with smaller size and a motor with smaller power. Moreover, the barrel body 1 is provided with the plurality of local reaction chambers 8, compared with a traditional single reactor of the reaction tank body, materials sequentially pass through the plurality of local reaction chambers 8, so that the materials are retained in the barrel body 1 for enough time, the condition that the materials are discharged in advance without fully reacting is avoided, the materials are more fully reacted, and compared with a single reactor of a single stirring shaft of the single reactor, the reactor provided by the invention can reduce the requirements on the strength and the power of the stirring device 4, is convenient for providing a material stirring effect, can accelerate the reaction of the better stirring effect, and avoids acidification.
The stirring device comprises a motor, a stirring shaft and a stirring paddle, wherein the stirring shaft is positioned in the barrel, the two ends of the stirring shaft are rotatably connected onto the inner wall of the barrel through bearings, one end of the stirring shaft can be rotatably connected onto the barrel in a cantilever mode, one end part of the stirring shaft penetrates through the side wall of the barrel and extends out of the barrel, the motor is fixed onto the outer wall of the barrel, the output shaft of the motor is mechanically connected with one end of the stirring shaft, which penetrates through the side wall of the barrel, and the stirring paddle is installed on. The stirring device is vertical or parallel to the flowing direction of the materials in the local reaction chamber.
In this embodiment, it is preferable that a heat insulating layer (not shown in the figure) is arranged on the outer wall of the barrel body 1, the heat insulating layer is a coil pipe laid on the barrel body 1, and hot water or steam is introduced into the coil pipe during use, so that the temperature suitable for reaction is maintained inside the barrel body 1, for example, when organic materials are subjected to anaerobic fermentation, the temperature of 30 ℃ is required, and when the ambient temperature is low, the temperature of the barrel body 1 is raised by introducing hot water or steam into the coil pipe, so that normal reaction is ensured.
Example 2
As shown in fig. 2, the present embodiment provides a cylindrical structure in which the tub 1 is made of metal, and provides the stirring device 4 with the stirring shaft arranged in a direction perpendicular to the moving direction of the material. Or an included angle is formed between the moving direction of the material and the moving direction of the material. In this example, a plurality of first partitions 2 are continuously disposed, and the first discharge ports 2-1 are arranged in a staggered pattern. Specifically, the first discharge port 2-1 is disposed at the right side of the tub 1, and the discharge port 2-1 adjacent thereto is disposed at the left side of the tub 1. The first discharge openings 2-1 are arranged in a staggered mode, materials enter a barrel body of the reactor from the feed opening 6 and horizontally move along the first partition plate 2, and accumulation and extrusion of newly fed materials are used as driving force. To the first discharge opening 2-1 and falls by gravity into a new local reaction zone. The horizontal stirring device 4 makes the materials fully contact with the anaerobic microorganisms. The material continues to move horizontally along the first partition 2. And each horizontal stirring device 4 is set with different rotating speeds according to the reaction stage of the materials in the current local reaction area. And discharging the materials from the discharge port after the reaction is finished.
So that the materials pass through a reciprocating and returning path in the barrel body 1, such as a Z-shaped path, a zigzag path or a zigzag path, thereby further improving the retention time of the materials in the barrel body 1 and ensuring that the reaction is more sufficient.
Example 3
The first partition plate in this embodiment may be inclined downward at a certain angle as shown in fig. 3, or may be inclined upward at a certain angle as shown in fig. 4. The retention time of the materials is ensured, and the materials are fully stirred.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The vertical anaerobic digestion reactor for the materials with high inherent content is characterized by comprising a barrel body (1), a feed inlet (6) arranged at the upper part of the barrel body, a discharge outlet (7) arranged at the lower part of the barrel body and a partition plate arranged in the barrel body, wherein the partition plate comprises at least one first partition plate (2) or a combination of at least one first partition plate (2) and one second partition plate (3);
a plurality of local reaction chambers are formed among the partition plates and are sequentially distributed from the upper part to the lower part of the barrel body, and at least one horizontal stirring device (4) is arranged in each local reaction chamber;
the circumferential side wall of the partition plate is connected with the inner wall of the barrel body, and at least one discharge opening is formed in the partition plate; or a gap is formed between the circumferential side wall of the clapboard and the inner wall of the barrel body so as to form at least one discharge opening; the discharge openings of two adjacent local reaction chambers are staggered.
2. The vertical anaerobic digestion reactor for high content organic materials according to claim 1, characterized in that when the partitions include at least one first partition (2), the at least one first partition (2) is continuously staggered.
3. The vertical anaerobic digestion reactor for high content organic materials according to claim 1, characterized in that, when the partitions include at least one first partition (2) and at least one second partition (3), the at least one first partition (2) and the at least one second partition (3) are alternately arranged in vertical space inside the barrel body.
4. The vertical anaerobic digestion reactor for high content organic materials according to claim 1, characterized in that each of the first partitions (2) is provided with a first discharge opening (2-1).
5. The vertical anaerobic digestion reactor for highly indigenous organic materials according to claim 1, wherein the space between each second partition and the sidewall of both sides of the barrel body is provided with two second discharge openings (3-1), and the two second discharge openings (3-1) of each second partition are arranged symmetrically with respect to the center axis of the barrel body.
6. The vertical anaerobic digestion reactor for high content organic materials according to claim 1, wherein the partition is horizontally or obliquely arranged.
7. The vertical anaerobic digestion reactor for high content organic materials, according to claim 6, characterized in that when the partition is disposed obliquely, the partition is inclined upward or downward along the discharging direction of the materials.
8. The vertical anaerobic digestion reactor for the materials with high inherent content according to claim 1, characterized in that the outer wall of the barrel body (1) is provided with an insulating layer.
9. The vertical anaerobic digestion reactor for materials with high inherent content as claimed in claim 1, wherein the stirring device comprises a motor, a stirring shaft and a stirring paddle, the stirring shaft is positioned in the barrel body, two ends of the stirring shaft are rotatably connected to the inner wall of the barrel body through bearings, one end of the stirring shaft can be rotatably connected to the barrel body and is arranged in a cantilever manner, and at least one end part of the stirring shaft penetrates through the side wall of the barrel body and extends out to the outside; the motor is fixed on the outer wall of the barrel body, an output shaft of the motor is mechanically connected with one end, penetrating through the side wall of the barrel body, of the stirring shaft, and the stirring paddle is installed on the stirring shaft. The direction and the size of the thrust action of the stirring paddle can be realized by adjusting the rotating speed of the motor and configuring the style and the size of the paddle according to actual conditions.
10. The vertical anaerobic digestion reactor for high content organic materials as claimed in claim 1, wherein the stirring device is perpendicular or parallel to the flowing direction of the materials in the local reaction chamber.
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| CN202110581237.3A CN113388495A (en) | 2021-05-27 | 2021-05-27 | Vertical anaerobic digestion reactor for high-content inherent organic materials |
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| EP2565259A1 (en) * | 2011-09-01 | 2013-03-06 | Conviotec GmbH | Method and device for biogas production |
| CN208883883U (en) * | 2018-09-05 | 2019-05-21 | 江苏省农业科学院 | A kind of Self-sinking type double layer dry anaerobic ferment devices |
| CN208883890U (en) * | 2018-08-13 | 2019-05-21 | 南昌大学 | The integrated adaptive equipment of 3-phase dry type anaerobic fermentation |
| WO2019166620A1 (en) * | 2018-03-01 | 2019-09-06 | Doranova Oy | Anaerobic digestion reactor and plant |
| CN209872941U (en) * | 2018-12-27 | 2019-12-31 | 广西博世科环保科技股份有限公司 | High-solid-content horizontal plug-flow anaerobic reactor |
| CN212142555U (en) * | 2020-04-29 | 2020-12-15 | 彭东 | Horizontal kettle |
-
2021
- 2021-05-27 CN CN202110581237.3A patent/CN113388495A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2565259A1 (en) * | 2011-09-01 | 2013-03-06 | Conviotec GmbH | Method and device for biogas production |
| WO2019166620A1 (en) * | 2018-03-01 | 2019-09-06 | Doranova Oy | Anaerobic digestion reactor and plant |
| CN208883890U (en) * | 2018-08-13 | 2019-05-21 | 南昌大学 | The integrated adaptive equipment of 3-phase dry type anaerobic fermentation |
| CN208883883U (en) * | 2018-09-05 | 2019-05-21 | 江苏省农业科学院 | A kind of Self-sinking type double layer dry anaerobic ferment devices |
| CN209872941U (en) * | 2018-12-27 | 2019-12-31 | 广西博世科环保科技股份有限公司 | High-solid-content horizontal plug-flow anaerobic reactor |
| CN212142555U (en) * | 2020-04-29 | 2020-12-15 | 彭东 | Horizontal kettle |
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