CN211057085U - Composite high-solid-content assembled anaerobic fermentation device - Google Patents
Composite high-solid-content assembled anaerobic fermentation device Download PDFInfo
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- CN211057085U CN211057085U CN201921735882.0U CN201921735882U CN211057085U CN 211057085 U CN211057085 U CN 211057085U CN 201921735882 U CN201921735882 U CN 201921735882U CN 211057085 U CN211057085 U CN 211057085U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
A composite high solid content assembled anaerobic fermentation device belongs to the technical field of fermentation devices. The reactor is formed by mutually connecting a tank body I, a tank body II … (n-1), a tank body n and a left end enclosure arranged on the tank body I and a right end enclosure arranged on the tank body n which are in cylindrical structures; the tank body is divided into a steel structural layer and a concrete reinforcing layer, and the heating coil is arranged on the outer surface of the steel structural layer; the heat preservation is established at the outmost of concrete back up coat. The tank body I is provided with a feed inlet, and the tank body II … (n-1) is provided with an air outlet; the tank body n is provided with a discharge hole and an air outlet; the upper part of each tank body is respectively provided with 1 inspection port and three instrument ports; the central axis of the tank body is provided with an assembled hollow stirring shaft, the stirring of different tank bodies is connected by a coupling, and the stirring shaft is provided with blades. The tank body can be detached, the lifting lugs are arranged at the two ends of the tank body, and when a user needs to move, the tank body can be detached and is convenient to hoist and transport, and equipment is prevented from being idle and wasted.
Description
Technical Field
The utility model belongs to the technical field of fermenting installation, especially, relate to a compound height contains solid pin-connected panel anaerobic fermentation device. The anaerobic fermentation anaerobic reactor is suitable for the field of recycling of organic and biomass wastes such as agricultural solid wastes (livestock and poultry manure, straws and the like) and municipal kitchen waste (residual) and sludge, can efficiently convert organic matters and biomass of the solid wastes into methane and base materials containing high inherent organic fertilizer by using the anaerobic fermentation principle, and can completely realize the recycling of the wastes.
Background
The fermentation technology is classified according to the solid content, and is divided into wet anaerobic fermentation (the solid content is less than 10%) and dry anaerobic fermentation (more than 20%), the wet anaerobic fermentation technology is low in solid content, a large amount of clean water needs to be consumed in the initial stage of fermentation, the product concentration is low after fermentation is finished, dehydration is difficult, and a large amount of biogas slurry produced by the fermentation technology has the problems of biogas slurry consumption and secondary environmental pollution, and the fermentation technology becomes an important bottleneck in wet fermentation application. The dry anaerobic fermentation has the advantages of wet fermentation and does not cause secondary pollution to the environment. Therefore, the vigorous development of the dry anaerobic fermentation technology is a necessary requirement for improving the current situations of agricultural waste treatment and resource utilization in China.
1. At present, the technology of dry anaerobic fermentation main equipment anaerobic reactors in China mainly depends on introducing foreign complete equipment or introducing foreign technologies, the phenomenon of neck clamping exists, the industrial investment cost is high, and the development of organic solid waste resource utilization in China is restricted.
2. The dry anaerobic fermentation tank is constructed by site construction, so that the construction period is long and the installation efficiency is low; the heating is not uniform, the fermentation efficiency is easily influenced, and the economic efficiency of the project is seriously influenced;
3. the reactor equipment can not realize standardized production, has high cost and restricts the development of the industry.
SUMMERY OF THE UTILITY MODEL
To the problem that dry-type anaerobic fermentation exists, this application provides a compound height contains solid pin-connected panel anaerobic fermentation device, and the device can be transported to the scene after the prefabricated module of mill and assemble, and construction period is short and investment cost is low, has realized the mode at the standardized standard production of mill, is convenient for use widely on a large scale.
In order to realize the purpose, the utility model discloses a composite high solid content assembled anaerobic fermentation device, which is characterized in that a fermentation reactor is formed by sequentially connecting and assembling a plurality of tank bodies I, II … (n-1) and n ports of the tank bodies in a horizontal cylindrical structure in series, so that a left end socket of the tank body I and a right end socket of the tank body n are communicated; each tank body comprises three layers of structures, the innermost layer is a steel structure layer, the outermost layer is a concrete reinforcing layer, a gap is formed between the steel structure layer and the concrete reinforcing layer, and the heating coil is arranged on the outer surface of the steel structure layer in the gap; an insulating layer is arranged outside the concrete reinforcing layer; the tank body I is provided with a feed inlet, and the tank body II … is provided with a gas outlet; the tank body n is provided with a discharge hole and an air outlet; meanwhile, the upper part of each tank body is respectively provided with 1 inspection port and three instrument ports; the central axis of the reactor is provided with an assembled hollow stirring shaft, the stirring shafts of different tank bodies are connected into a whole by a coupling, the whole stirring shaft is driven by a stirring motor to rotate, the stirring shaft is provided with blades, and each tank body is internally provided with a plurality of blades; and a hot water inlet and a hot water outlet which are connected with the heating coil are reserved in each tank body respectively. n is more than or equal to 2.
The bottom of each tank body is provided with a discharge opening. The left end of the tank body I is provided with a left sealing head, and the right end of the tank body n is provided with a right sealing head.
The heating coil of each tank body is provided with a circulating pump and a hot water regulating valve, a temperature sensor is also arranged in each tank body, all the circulating pumps, the hot water regulating valves and the temperature sensors are connected with a control system, and the control system can control the temperature of each tank body by controlling the hot water flow of the heating coil and the like.
The reactor of the utility model can be used for anaerobic fermentation reactions in different stages and with different reaction temperature sections.
When in use, the parameters of the composite high-solid content assembled anaerobic fermentation device are set as follows:
the diameter of the tank body is 4-10 m, and the length of the tank body is 3-15 m. And considering the static pressure of the horizontal container, the corrosion margin is 1.5mm, and the thickness of the steel plate of the tank body is 4-8 mm. The strength of the concrete is C20 or C25, and the thickness of the concrete layer1Is 180 mm-300 mm. The thickness of the gap between the steel structural layer and the concrete reinforcing layer is 1.2-1.5 times of the diameter of the heating coil.
The anaerobic fermentation device can adjust the heat source quantity and the temperature and is suitable for the anaerobic reaction process under any temperature condition. The heat exchange heat source, namely the hot water condition, the heat source input quantity and flow rate, the material temperature and the like are calculated according to the following methods:
the heat source is hot water with the temperature of 60-85 ℃, the outer wall of the tank is radiated without heating by a pipe, and the total heat Q required by the fermentation device is as follows:
Q＝Q1+Q2；
description of the drawings: q1The heat required to heat the material to the desired temperature, Q1＝mC(t-ts) M is the daily feeding amount, t and ts are the material feeding temperature and the temperature to which the material needs to be heated respectively, and C is the specific heat capacity of the material, and is determined by the total solid concentration of the material and can be consulted or/and calculated according to the prior art; taking cow dung as an example, C is 4.17[1-0.00812 TS ═ TS]；
Q2-heat loss from the cylindrical tank;
D0、D1、D2the outer diameter of the steel tank body, the outer diameter of the inner heat-insulating layer (the outer diameter of the concrete layer) and the outer diameter of the outer heat-insulating layer (the outer diameter of the heat-insulating layer); lambda [ alpha ]1，λ2-the thermal conductivity of the concrete and the thermal insulation layer respectively; t is0、TaThe temperatures of the outer surface of the steel tank and the outer surface of the heat-insulating layer are respectively αsThe heat exchange coefficient between the outer surface of the insulating layer and the air is high;
from the total heat quantity Q and the heat source inlet and outlet temperature, the heat source flow rate Q is Q/[ Cp × (t)1-t2)]Cp is the specific heat capacity at constant pressure of water, t1、t2The water inlet temperature and the water outlet temperature of the heat source are set; the designed flow velocity v of hot water in the coil is 0.35-0.5 m/s, so that the diameter d of the coil can be calculated (4 q/pi v)1/2。
The outer diameter D of the outer heat insulation layer2The following requirements should be satisfied:
in the formula: d0、D2Respectively a steel tank body,The outer diameter of the outer heat insulation layer; lambda [ alpha ]1，λ2-the thermal conductivity of the concrete and the thermal insulation layer respectively; [ Q ]]The maximum heat loss is allowed to be taken according to appendix B of GB50264-2013 'design Specification of Industrial Equipment and pipeline insulation engineering'; t is0、T1、TaThe temperatures of the outer surface of the steel tank, the outer surface of the concrete layer and the outer surface of the heat-insulating layer are respectively αsThe heat exchange coefficient between the outer surface of the insulating layer and the air is high;
calculating D according to the parameters2lnD2/D0And then, calculating the total thickness of the heat-insulating layer and the concrete layer according to appendix D of GB50264-2013 'design Specification of Industrial Equipment and pipeline Heat insulation engineering'. The thickness of the heat-insulating layer2＝-1Wherein1Is the thickness of the concrete layer.
The utility model has the advantages that:
1. the tank body can be detached, the lifting lugs are arranged at the two ends of the tank body, and when a user needs to move, the tank body can be detached and is convenient to hoist and transport, and equipment is prevented from being idle and wasted.
2. A compound height contain admittedly assemble anaerobic fermentation device, the jar body adopts the preparation of steel sheet barrel structural layer outsourcing reinforced concrete back up coat, reduces steel quantity and insulating material quantity, reduces anaerobic fermentation jar cost.
3. A compound height contain admittedly assemble anaerobic fermentation device, fermentation reactor is horizontal cylinder, is assembled through modes such as welding or flange by different jar bodies and forms, makes things convenient for the on-the-spot installation, improves the efficiency of construction.
4. A compound height contains solid anaerobic fermentation device of assembling, the fermentation reactor is assembled by the prefabricated jar body of different quantity and is formed, the fermentation reactor volume reaches several hundred cubic meters to last thousand cubic meters, is suitable for the processing that the height under the various operating modes contains the inherent quick-witted discarded object.
5. The utility model discloses a heating coil installs and makes whole steel structural layer as the heat exchanger in steel structural layer surface, and its heat transfer area is big and the total coverage heat transfer workspace, has reached the whole even purpose of being heated of reactor.
Drawings
FIG. 1 is a schematic diagram of a segmented temperature control system;
FIG. 2 is a schematic diagram of the internal structure of a high solid content assembled anaerobic fermentation device;
FIG. 3 is a schematic diagram of the external structure of a high solid content assembled anaerobic fermentation device.
FIG. 4 is appendix D of the design Specification of Industrial plant and pipeline insulation engineering according to GB 50264-2013.
The sequence numbers in the figures illustrate: 1. the concrete mixing tank comprises a tank body I, a left end socket, a stirring motor, a stirring shaft I, a frame 5, a bearing seat I, a feeding port 7, a detection port I, an inspection port I, an instrument port 12, a heating coil I, a heat source inlet I, a heat source outlet 15, an air outlet I, a discharge port I, a concrete layer I, a heat insulation layer I, a coupler 8, a tank body II, an inspection port 21, an inspection port II, an instrument port 25, a heating coil II, a heat source inlet 26, a heat source inlet II, a heat source outlet 27, an air outlet II, an air outlet 28, an air outlet 29, a discharge port II, a concrete layer 30, a heat insulation layer II, a stirring shaft II, a tank body n, an inspection port n, 42. concrete layers n and 43, heat insulation layers n and 44, stirring shafts n and 45, discharge openings n and 46, right end sockets and 47 bearing seats II.
The specific implementation mode is as follows:
the following provides a detailed description of the structural principles of the present invention with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the following examples.
Example 1
As shown in figure 1, the utility model provides a compound high solid content assembled anaerobic fermentation device. The tank body I1, the tank body II20 and the tank body n33 are cylindrical structures and are connected with each other through welding or flanges to ensure sealing, and the tank body I1 and the tank body n33 are respectively provided with a left end socket 2 and a right end socket 46; concrete layers 17, 30 and 42 are poured outside the tank body I1, the tank body II20 and the tank body n33, and an insulating layer I18, an insulating layer II31 and an insulating layer n43 are arranged on the outermost layer; a stirring shaft I4, a stirring shaft II32 and a stirring shaft n44 which penetrate through the tank body are respectively arranged on the central axis of the tank body, and different stirring shafts are respectively connected by a coupler 19; the stirring shaft I4, the stirring shaft II32 and the stirring shaft n44 are fixed by a bearing seat I6 and a bearing seat II47 which are positioned outside the left seal head 2 and the right seal head 46; the stirring motor 3 of the tank body is fixedly supported by a frame 5; a material inlet 7 is arranged above the tank body I1, and the material flows to the tail end of the anaerobic generator through the propelling action of a stirring shaft I4, a stirring shaft II32 and a stirring shaft n44 and is discharged through a discharge opening n 45; the heating coil I12, the heating coil II25 and the heating coil n38 are assembled on the outer surface of the steel structural layer of the tank body and are respectively provided with a heat source inlet I13, a heat source inlet II26, a heat source inlet n39, a heat source outlet I14, a heat source outlet II27 and a heat source outlet n40, and the tank body is heated in a sectional mode through respectively injecting heat sources, so that the tank body is uniformly heated; the inspection port I8, the inspection port II21 and the inspection port n34 of the tank body are provided with windows, so that the working state in the reactor can be observed in real time; the instrument port I9-11, the instrument port II22-24 and the instrument port n35-37 are respectively provided with a temperature sensor, a pH sensor, a flow meter, a pressure gauge and other on-line instruments, the indexes of anaerobic fermentation reaction of the reactor are monitored, and the acquisition and automatic adjustment are carried out through a control system, so that the reaction is ensured to be in the optimal state; the gas outlets 15, 28 and 41 of the tank body are convenient for collecting and discharging biogas. The discharge openings I16, II29 and n45 of the tank body facilitate the system to discharge when in overhaul or parking.
Additionally, a compound height contain admittedly assemble anaerobic fermentation device, adopt the modularization preparation, between jar body I and jar body n, can splice the jar body of different quantity, the equipment is convenient, the dilatation is nimble.
When in use, the parameters of the composite high-solid content assembled anaerobic fermentation device are set as follows:
the diameter of the tank body is 4-10 m, and the length of the tank body is 3-15 m. And considering the static pressure of the horizontal container, the corrosion margin is 1.5mm, and the thickness of the steel plate of the tank body is 4-8 mm. The strength of the concrete is C20 or C25, and the thickness of the concrete layer1Is 180 mm-300 mm. The thickness of the gap between the steel structural layer and the concrete reinforcing layer is 1.2-1.5 times of the diameter of the heating coil.
The anaerobic fermentation device can adjust the heat source quantity and the temperature and is suitable for the anaerobic reaction process under any temperature condition. The heat exchange heat source, namely the hot water condition, the heat source input quantity and flow rate, the material temperature and the like are calculated according to the following methods:
the heat source is hot water with the temperature of 60-85 ℃, the outer wall of the tank is radiated without heating by a pipe, and the total heat Q required by the fermentation device is as follows:
Q＝Q1+Q2；
description of the drawings: q1The heat required to heat the material to the desired temperature, Q1＝mC(t-ts) M is daily feeding amount, t and TS are respectively material feeding temperature and temperature to which the material needs to be heated, C is specific heat capacity of the material and is determined by total solid concentration, taking cow dung as an example, C is 4.17[1-0.00812 TS%]；
Q2-heat loss from the cylindrical tank;
D0、D1、D2the outer diameters of the steel tank body, the outer side of the inner heat insulation layer (concrete layer) and the outer heat insulation layer (heat preservation layer) are respectively set; lambda [ alpha ]1，λ2-the thermal conductivity of the concrete and the thermal insulation layer respectively; t is0、TaThe temperatures of the outer surface of the steel tank and the outer surface of the heat-insulating layer are respectively αsThe heat exchange coefficient between the outer surface of the insulating layer and the air is high;
from the total heat quantity Q and the heat source inlet and outlet temperature, the heat source flow rate Q is Q/[ Cp × (t)1-t2)]Cp is the specific heat capacity at constant pressure of water, t1、t2The water inlet temperature and the water outlet temperature of the heat source are set; the designed flow velocity v of hot water in the coil is 0.35-0.5 m/s, so that the diameter d of the coil can be calculated (4 q/pi v)1/2。
The outer diameter D of the outer heat insulation layer2The following requirements should be satisfied:
in the formula: d0、D2The outer diameters of the heat insulating layers of the steel tank body and the outer layer are respectively;λ1，λ2-the thermal conductivity of the concrete and the thermal insulation layer respectively; [ Q ]]The maximum heat loss is allowed to be taken according to appendix B of GB50264-2013 'design Specification of Industrial Equipment and pipeline insulation engineering'; t is0、T1、TaThe temperatures of the outer surface of the steel tank, the outer surface of the concrete layer and the outer surface of the heat-insulating layer are respectively αsThe heat exchange coefficient between the outer surface of the insulating layer and the air is high;
calculating D according to the parameters2lnD2/D0And then, calculating the total thickness of the heat-insulating layer and the concrete layer according to appendix D of GB50264-2013 'design Specification of Industrial Equipment and pipeline Heat insulation engineering'. The thickness of the heat-insulating layer2＝-1Wherein1Is the thickness of the concrete layer.
The above, only for the utility model discloses create the concrete implementation way of preferred, nevertheless the utility model discloses the protection scope of creation is not limited to this, and any person skilled in this technical field is in the utility model discloses create the technical scope of disclosure, according to the utility model discloses the technical scheme of creation and utility model design equivalence replacement or change all should be covered in the protection scope of creation of the utility model.
Claims (6)
1. A composite high solid content assembled anaerobic fermentation device is characterized in that a reactor is formed by sequentially connecting a plurality of tank bodies I, II … and n ports of tank bodies in a horizontal cylindrical structure in series to form a whole, and a left end socket of the tank body I and a right end socket of the tank body n are connected with each other; each tank body comprises three layers of structures, the innermost layer is a steel structure layer, the outermost layer is a concrete reinforcing layer, a gap is formed between the steel structure layer and the concrete reinforcing layer, and the heating coil is arranged on the outer surface of the steel structure layer in the gap; an insulating layer is arranged outside the concrete reinforcing layer; the tank body I is provided with a feed inlet, and the tank body II … is provided with a gas outlet; the tank body n is provided with a discharge hole and an air outlet; meanwhile, the upper part of each tank body is respectively provided with 1 inspection port and three instrument ports; the central axis of the reactor is provided with an assembled hollow stirring shaft, the stirring shafts of different tank bodies are connected into a whole by a coupling, the whole stirring shaft is driven by a stirring motor to rotate, the stirring shaft is provided with blades, and each tank body is internally provided with a plurality of blades; a hot water inlet and a hot water outlet which are connected with the heating coil are reserved in each tank body respectively; n is more than or equal to 2; the bottom of each tank body is provided with a discharge opening; the left end of the tank body I is provided with a left sealing head, and the right end of the tank body n is provided with a right sealing head.
2. The composite type high solid content assembled anaerobic fermentation device according to claim 1, wherein the heating coil of each tank body is provided with a circulating pump and a hot water regulating valve, and a temperature sensor is also arranged in each tank body, all the circulating pumps, the hot water regulating valves and the temperature sensors are connected with a control system, and the control system can control the temperature of each tank body by controlling the hot water flow of the heating coil and the like.
3. The composite type high solid content assembled anaerobic fermentation device according to claim 1, wherein the diameter of the tank body is 4-10 m, and the length of the tank body is 3-15 m.
4. The composite type high solid content assembled anaerobic fermentation device according to claim 1, wherein the static pressure of the horizontal container is considered, the corrosion margin is 1.5mm, and the thickness of the tank steel plate is 4 mm-8 mm.
5. The composite type high solid content assembled anaerobic fermentation device according to claim 1, wherein the concrete strength is C20 or C25, and the thickness of the concrete layer is1Is 180 mm-300 mm.
6. The composite type high solid content assembled anaerobic fermentation device according to claim 1,
the thickness of the gap between the steel structural layer and the concrete reinforcing layer is 1.2-1.5 times of the diameter of the heating coil.
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