CN218262480U - Straw and livestock and poultry excrement pretreatment and combined anaerobic fermentation device - Google Patents
Straw and livestock and poultry excrement pretreatment and combined anaerobic fermentation device Download PDFInfo
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- CN218262480U CN218262480U CN202223045391.8U CN202223045391U CN218262480U CN 218262480 U CN218262480 U CN 218262480U CN 202223045391 U CN202223045391 U CN 202223045391U CN 218262480 U CN218262480 U CN 218262480U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A straw and livestock and poultry manure pretreatment and combined anaerobic fermentation device comprises a crushing device, a conveying device, a vertical enzymolysis tank, a heat preservation system and a horizontal anaerobic fermentation tank. The crushing device crushes the crop straws, and then the vibrating screen is used for screening the straws with the grain size less than or equal to 2 cm. The straws are conveyed to a vertical enzymolysis tank through a conveying device, the straws are subjected to hydrothermal and composite microbial inoculum combined pretreatment in the vertical enzymolysis tank, then the straws are pumped into a horizontal anaerobic fermentation tank, and the livestock and poultry manure and the straws in the horizontal anaerobic fermentation tank are fully mixed and then subjected to anaerobic fermentation to produce methane. According to the utility model relates to a straw and the dirty preliminary treatment of beasts and birds excrement and unite anaerobic fermentation device can effectively improve the degree of hydrolysis of the lignocelluloses material in straw and the beasts and birds excrement, shortens anaerobic fermentation time, improves anaerobism system stability and gas production rate. The device integration degree is good, has greatly promoted the utilization ratio of fermentation raw materials, has avoided the wasting of resources.
Description
Technical Field
The utility model relates to an organic waste handles technical field, concretely relates to straw and dirty preliminary treatment of beasts and birds excrement and unite anaerobic fermentation device.
Background
The anaerobic fermentation technology is an important treatment mode for realizing the reduction, reclamation and harmlessness of the livestock and poultry manure. Under the influence of breeding types, breeding modes, feed types, excrement cleaning and transporting modes and the like, the solid content of the livestock and poultry excrement often has large difference and high sand content, and the livestock and poultry excrement needs to be homogenized and subjected to sand removal pretreatment before anaerobic fermentation for gas production. In addition, the C/N ratio of the livestock and poultry manure is generally low, which easily causes poor livestock and poultry manure treatment effect and low anaerobic fermentation gas production rate, for example, chicken manure and pig manure are easy to generate ammonia inhibition in the anaerobic fermentation process, thereby seriously affecting the anaerobic fermentation process. In order to avoid the phenomenon, the C/N ratio needs to be adjusted to be in a range suitable for the growth and metabolism of anaerobic fermentation microorganisms, so that stable and efficient anaerobic fermentation gas production performance is realized.
The crop straws become important raw materials for adjusting the anaerobic fermentation C/N ratio due to the advantages of rich carbon source, high yield, easy acquisition and the like. However, the content of hemicellulose, cellulose and lignin in the straws accounts for more than 80% of the total weight of dry matters, so that in the anaerobic fermentation process, macromolecular structures are complex and difficult to degrade, anaerobic microorganism fermentation is difficult, a fermentation system is slow to start, and the gas production efficiency is low. Therefore, the straws need to be pretreated to degrade hemicellulose, cellulose and lignin into soluble oligomers or monomers, and the mode can improve the anaerobic fermentation efficiency of the straws and realize large-scale energy and substance conversion of the straws.
Relevant researches show that the biogas produced by mixing the livestock and poultry manure and the straws and then carrying out anaerobic fermentation has the advantages of increasing the content of organic matters, fully utilizing the volume of the reactor to adjust the C/N ratio, enhancing the stability of the anaerobic reaction process, improving the anaerobic fermentation effect and the like.
In order to solve the problem, the utility model provides a straw and the dirty preliminary treatment of beasts and birds excrement and unite anaerobic fermentation device, the device has solved the problem that the dirty anaerobic fermentation of straw difficult degradation and beasts and birds excrement produces the gas performance and hang down for straw degradation rate has improved the degradation rate of straw, has realized that straw and the dirty stability of beasts and birds excrement, efficient anaerobic fermentation produce the gas performance.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the shortcoming of prior art, provide a straw and the dirty preliminary treatment of beasts and birds excrement and unite anaerobic fermentation device.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a straw and dirty preliminary treatment of beasts and birds excrement and unite anaerobic fermentation device include reducing mechanism, conveyer, vertical enzymolysis tank, heat preservation system and horizontal anaerobic fermentation jar.
The crushing device comprises a first feeding hole, a crushing cutter head, a vibrating screen, a first discharging hole, a second discharging hole, a first base, a dust cover, a conveyor belt and a third discharging hole, wherein the second discharging hole of the crushing device is located right above the conveyor belt, and crushed straws are conveyed to the conveyor belt.
The conveying device is provided with a second feeding port, a packing auger, a fourth discharging port and a second base, and the crushed straw is conveyed to a third feeding port of the vertical enzymolysis tank through the conveying device.
Vertical enzymolysis tank top be equipped with feed inlet three and motor one, the internal portion of jar is equipped with the shower head, axis one, install rake defoamer and rotatory tool bit on the axis one, be equipped with sensor one on the jar side wall, the baffle, dissolved oxygen electrode, temperature electrode one and pH electrode one, jar body bottom is equipped with discharge gate five, arrange sand mouth one and base three, the vertical enzymolysis tank is outside to be equipped with heat preservation system, aeration system and temperature rise, turbocharging system, the discharge gate five of vertical enzymolysis tank is connected to horizontal anaerobic fermentation tank's feed inlet four through pump two.
The heat preservation system is provided with a water heater and a valve, a first coiled pipe, a first water inlet and a first water outlet are respectively arranged in the vertical enzymolysis tank, and a second coiled pipe, a second water outlet and a second water inlet are arranged in the horizontal anaerobic fermentation tank.
The horizontal anaerobic fermentation tank is internally provided with a middle shaft II, a motor II and a stirring paddle are mounted on the middle shaft II, a feed inlet IV, an exhaust hole, a feed inlet V and a sensor III are arranged on the upper part of the tank body, a base IV, a sand collecting tank, a temperature electrode II, a pH electrode II, a sand discharge port II and a discharge port VI are arranged on the lower part of the tank body, a heat preservation device is arranged on the outer side of the tank body, biogas generated by anaerobic fermentation is discharged through the exhaust hole, and after the anaerobic fermentation gas production is finished, residues (biogas slurry and biogas residues) are discharged through the discharge port VI.
Preferably, the vibrating screen inside the crushing device is arranged below the crushing cutter head and forms an included angle of 6 degrees with the horizontal ground.
Preferably, the aperture of the vibrating screen is 2cm in particle size.
Preferably, aeration system be equipped with breather pipe, aeration pipe, bacteria removal filter and aeration fan, vertical enzymolysis tank bottom a week is located to the aeration pipe, the aeration pipe links to each other with bacteria removal filter, bacteria removal filter links to each other with aeration fan, aeration fan locates vertical enzymolysis tank outside one side.
Preferably, the heating and pressurizing system comprises a high-temperature steam port, a steam pipe, a steam generator, a steam pressurizing device and a steam pressurizing regulation system.
Preferably, the harrow-type defoamer is arranged on the second middle shaft of the vertical enzymolysis tank, and the height of the harrow-type defoamer is 5cm higher than that of the second sensor, so that bubbles can be smashed, escape is prevented, and the utilization rate of the tank body is improved.
Preferably, the heat preservation system is controlled by a valve to split. One of the two pumps is used for conveying hot water in the water heater to the first coiled pipe from a first water inlet on the lower side of the vertical enzymolysis tank body, the other pump is used for conveying the hot water in the water heater to a second coiled pipe from a second water inlet on the lower side of the horizontal anaerobic fermentation tank body, and the hot water flows back to the water heater from a second water outlet on the upper side of the tank body.
Preferably, the straw pretreatment mode in the vertical enzymolysis tank is hydrothermal and composite microbial inoculum pretreatment, and the composite microbial inoculum used for pretreatment is a mixed solution of biogas slurry and composite microbial inoculum.
Preferably, the horizontal anaerobic fermentation tank is provided with two feeding ports, the feeding port IV is used for feeding pretreated crop straws, and the feeding port V is used for feeding livestock and poultry manure.
Preferably, the horizontal anaerobic fermentation tank is a sealed tank, and the included angle between the central axis of the horizontal anaerobic fermentation tank and the horizontal ground is 8 degrees.
Preferably, the side surface of the paddle of the stirring paddle is an opening tool bit.
The utility model discloses the theory of operation as follows:
(1) The crop straws are put into the crushing device through the feeding port for crushing, the vibrating screen is used for screening out the straws with the grain diameter less than or equal to 2cm, then the straws are conveyed to the interior of the vertical enzymolysis tank by the conveying device for enzymolysis, and the screened straws with the grain diameter greater than 2cm are put into the crushing device again for crushing again.
(2) When the crop straws are put into the vertical enzymolysis tank through the conveying device, the spray headers are simultaneously opened, when the height of the raw materials reaches the position of the first sensor, feeding is stopped, and the spray headers and the feed inlet III are closed; the stirring equipment runs from the raw material input to the end of the hydrothermal pretreatment, and the stirring mode is set to be a continuous stirring mode with the rotating speed of 15 r/min; performing steam heating pretreatment on the whole vertical enzymolysis tank by using high-temperature steam, wherein the temperature is 150-200 ℃, the pressure is 0.8-2.0MPa, and the temperature and pressure are kept for 20-40min; after the heating pretreatment is finished, the tank body is quickly opened, so that the temperature and the pressure are instantly reduced, and a product after the heating pretreatment is obtained.
(3) Rapidly cooling the product to 30-35 ℃ by using an aeration system, opening a first water inlet, and injecting hot water into a first coiled pipe to keep the temperature in the vertical enzymolysis tank at 30-35 ℃; inoculating the biogas slurry and the mixed solution of the compound microbial inoculum into a vertical enzymolysis tank; the stirring mode is set as an intermittent stirring mode with 15min of stirring per hour and 15r/min of rotating speed; starting an aeration fan to control the ventilation quantity to be 1.0-2.0L/min; the spray header is opened, and when the water level reaches the position of the high liquid level sensor II, the spray header is closed; the pH value of the whole enzymolysis process is controlled to be about 4.5, and the enzymolysis time is 24-48h.
(4) While the vertical enzymolysis tank pretreats crop straws, the horizontal anaerobic fermentation tank pretreats the livestock and poultry manure by crushing, homogenizing and desanding; conveying the product subjected to the combined pretreatment of heating and microbial inoculum into a horizontal anaerobic fermentation tank through a second pump, and setting a continuous stirring mode with the rotating speed of a stirring device at 15r/min to fully mix the pretreated corn husks, straws and other materials with the livestock and poultry feces; opening two pairs of coiled pipes of the horizontal anaerobic fermentation tank at the water inlets, injecting circulating hot water, and keeping medium-temperature fermentation at about 30-40 ℃ in the horizontal anaerobic fermentation tank under the monitoring of a temperature electrode II; keeping the pH of the horizontal anaerobic fermentation tank in a fermentation environment within the range of 6.8-7.5 under the monitoring of a pH electrode II; adding anaerobic fermentation microorganisms into the horizontal anaerobic fermentation tank; starting a stirring device to set an intermittent stirring mode with stirring for 10min per hour and the rotating speed of 8 r/min; the raw material enters an anaerobic fermentation stage, and the hydraulic retention time of the raw material is 20-25 days.
The utility model provides a pair of straw and dirty preliminary treatment of beasts and birds excrement and unite anaerobic fermentation device, it has following advantage:
(1) The device fully considers the influence of C/N ratio on the anaerobic fermentation process, skillfully mixes the straws rich in carbon sources and the livestock and poultry manure for combined anaerobic fermentation, and solves the problems of low utilization rate of the straws and the livestock and poultry manure and poor gas production performance of anaerobic fermentation.
(2) Before anaerobic fermentation, the straws are subjected to hydrothermal and composite microbial inoculum combined pretreatment, and hemicellulose, cellulose and lignin in the straws are degraded into soluble oligomers and monomers, so that the time used in an anaerobic fermentation acidification stage is greatly shortened, the whole anaerobic fermentation process is accelerated, and meanwhile, the anaerobic fermentation gas production potential and the raw material utilization rate are also improved.
(3) In the combined pretreatment process of the hydrothermal method and the composite microbial inoculum, the pH range of the obtained material after the hydrothermal pretreatment is about 4.5, which just accords with the optimum pH range of the composite microbial inoculum enzymolysis, greatly reduces the enzymolysis cost and simplifies the enzymolysis process.
(4) The composite microbial inoculum after the straw treatment can enter a horizontal anaerobic fermentation tank along with the straw, and continuously plays a role in degrading hemicellulose, cellulose and lignin.
(5) After anaerobic fermentation, residues (biogas slurry and biogas residues) in the horizontal anaerobic fermentation tank are discharged through the water outlet II, the biogas slurry and the biogas residues are separated by filtration, the biogas slurry is used for backflow and inoculation, and the biogas residues are used for preparing organic fertilizers, so that the utilization rate of straw and livestock and poultry manure is greatly improved, and resource waste is avoided.
Drawings
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a sectional view of a crushing cutter head according to an embodiment of the present invention.
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Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts. The present invention will be further explained with reference to the drawings and examples.
As shown in figure 1, the device for pretreating straws and livestock and poultry manure and performing combined anaerobic fermentation comprises a crushing device 1, a conveying device 2, a vertical enzymolysis tank 3, a heat insulation system 4 and a horizontal anaerobic fermentation tank 5.
The smashing device 1 comprises a first feeding hole 6, a smashing cutter head 7, a vibrating screen 8, a first discharging hole 9, a second discharging hole 10, a first base 11, a dust cover 12, a conveyor belt 13 and a third discharging hole 14, wherein the second discharging hole 10 of the smashing device 1 is located right above the conveyor belt 13, and smashed straws are conveyed to the conveyor device 2 through the conveyor belt 13.
The conveyer 2 is provided with a second feeding port 15, a packing auger 16, a fourth discharging port 17 and a second base 18, and the crushed straws are conveyed to a third feeding port 19 of the vertical enzymolysis tank 3 through the conveyer 2.
The top of the vertical enzymolysis tank 3 is provided with a third feeding hole 19 and a first motor 20, the tank is internally provided with a spray head 21 and a first middle shaft 22, the first middle shaft 22 is provided with a rake defoamer 23 and a rotary cutter head 24, the side wall of the tank is provided with a first sensor 26, a baffle 27, a dissolved oxygen electrode 28, a first temperature electrode 29 and a first pH electrode 30, the bottom of the tank is provided with a fifth discharging hole 31, a first sand discharging hole 41 and a third base 42, the vertical enzymolysis tank 3 is externally provided with a heat preservation system 4, an aeration system 34 and a temperature and pressure increasing system 43, and the fifth discharging hole 31 of the vertical enzymolysis tank 3 is connected to a fourth feeding hole 54 of the horizontal anaerobic fermentation tank 5 through a second pump 48.
The heat preservation system 4 is provided with a water heater 50 and a valve 52, a first coiled pipe 25, a first water inlet 38 and a first water outlet 39 are respectively arranged in the vertical enzymolysis tank 3, and a second coiled pipe 60, a second water outlet 61 and a second water inlet 66 are respectively arranged in the horizontal anaerobic fermentation tank 5.
The horizontal anaerobic fermentation tank 5 is internally provided with a middle shaft II 59, the middle shaft II 59 is provided with a motor II 53 and a stirring paddle 58, the upper part of the tank body is provided with a feed inlet IV 54, an exhaust hole 55, a feed inlet V56 and a sensor III 57, the lower part of the tank body is provided with a base IV 62, a sand collecting tank 63, a temperature electrode II 64, a pH electrode II 65, a sand discharge port II 67 and a discharge port VI 68, the outer side of the tank body is provided with a heat preservation system 4, biogas generated by anaerobic fermentation is discharged through the exhaust hole 55, and after the anaerobic fermentation is finished, residues (biogas slurry and biogas residues) are discharged through the discharge port VI 68.
In the embodiment of the utility model, in the hydrothermal pretreatment stage, the stirring mode in the vertical enzymolysis tank 3 is set as a continuous stirring mode with the rotating speed of 15r/min, the steam heating pretreatment temperature is 150-200 ℃, the pressure is 0.8-2.0MPa, and the heat preservation and pressure maintaining time is 20-40min; in the pretreatment stage of the composite microbial inoculum, the temperature in the vertical enzymolysis tank 3 is kept at 30-35 ℃, the stirring mode is set to be an intermittent stirring mode with the stirring speed of 15r/min for 15min per hour, and the ventilation rate is controlled to be 1.0-2.0L/min.
In the embodiment of the utility model, in the heating pretreatment stage, the shower head 21 on the upper portion of the vertical enzymolysis tank 3 inner tank body adjusts the water velocity according to the humidity of throwing into the crop straw, and the humidity adjustment that makes the crop straw is to 25-40%.
In the embodiment of the utility model, the hot water in the heat preservation system 4 is heated by utilizing the methane or the biomass fuel, and the biomass fuel is used for heating in the early stage of the start of the methane generated by anaerobic fermentation; after the biogas generated by anaerobic fermentation is stable, the biogas is used for heating. The hot water supply amount of the vertical enzymolysis tank 3 is controlled through a first pump 47 so as to maintain the temperature inside the tank body to meet the operation requirement; the third pump 49 is used for controlling the hot water supply quantity of the horizontal anaerobic fermentation tank 5 so as to maintain the internal temperature of the tank body to meet the operation requirement.
In the embodiment of the utility model, in the pretreatment stage of the livestock and poultry feces, the stirring device of the horizontal anaerobic fermentation tank 5 is set to be in a continuous stirring mode with the rotating speed of 15 r/min; in the anaerobic fermentation stage, the stirring device of the horizontal anaerobic fermentation tank 5 is set to be in an intermittent stirring mode with stirring time of 10min per hour and rotating speed of 8r/min, the temperature is kept at about 30-40 ℃, the pH value is in the range of 6.8-7.5, and the hydraulic retention time is 20-25 days.
The process flow of the utility model is as follows:
(1) The crop straws are thrown into the smashing device 1 through the first feeding hole 6 to be smashed, the straws with the grain size smaller than or equal to 2cm are screened out through the vibrating screen 8, then the straws are conveyed to the inside of the vertical enzymolysis tank 3 through the conveying device 2 to be subjected to enzymolysis, and the screened straws with the grain size larger than 2cm are thrown into the smashing device 1 again to be smashed again. The two discharge ports of the crushing device 1 are positioned right above the conveyor belt 13, and the crushed straws are conveyed to the conveyor device 2 through the conveyor belt 13.
(2) When the crop straws are put into the vertical enzymolysis tank 3 through the conveying device 2, the spray headers 21 are simultaneously opened, when the height of the raw materials reaches the first sensor 26, feeding is stopped, and the spray headers 21 and the third feed inlet 19 are closed; the stirring equipment runs from the input of raw materials to the end of the hydrothermal pretreatment, and the stirring mode is set to be a continuous stirring mode with the rotating speed of 15 r/min; the whole vertical enzymolysis tank 3 is subjected to steam heating pretreatment by using high-temperature steam, the temperature is 150-200 ℃, the pressure is 0.8-2.0MPa, and after the temperature and pressure are kept for 20-40min, the tank body is quickly opened, so that the temperature and the pressure are instantly reduced, and a product after the heating pretreatment is obtained.
(3) Rapidly cooling the product to 30-35 ℃ by using the aeration system 34, opening the first water inlet 38, and injecting hot water into the first serpentine pipe 25 to keep the temperature in the vertical enzymolysis tank 3 at 30-35 ℃; inoculating the biogas slurry and the mixed solution of the compound microbial inoculum into a vertical enzymolysis tank 3; the stirring mode is set as an intermittent stirring mode with 15min of stirring per hour and 15r/min of rotating speed; starting the aeration fan 51 to control the ventilation quantity to be 1.0-2.0L/min; the spray header 21 is opened, and when the water level reaches the second high liquid level sensor 40, the spray header 21 is closed; the pH value of the whole enzymolysis process is controlled to be about 4.5, and the enzymolysis time is 24-48h.
(4) While the vertical enzymolysis tank 3 pretreats the crop straws, the horizontal anaerobic fermentation tank 5 pretreats the livestock and poultry manure by crushing, homogenizing and desanding; conveying the product subjected to the combined pretreatment of heating and microbial inoculum into a horizontal anaerobic fermentation tank 5 through a second pump 48, and setting a continuous stirring mode with the rotating speed of a stirring device at 15r/min to fully mix the pretreated corn husks, straws and other materials with the livestock and poultry feces; opening a second water inlet 66 to inject circulating hot water into a second coiled pipe 60 of the horizontal anaerobic fermentation tank 5, and keeping the temperature in the horizontal anaerobic fermentation tank 5 to be about 30-40 ℃ under the monitoring of a second temperature electrode 64; maintaining the pH of the horizontal anaerobic fermentation tank in a fermentation environment within the range of 6.8-7.5 under the monitoring of a pH electrode II 65; anaerobic fermentation microorganisms are added into the horizontal anaerobic fermentation tank 5; starting a stirring device to set an intermittent stirring mode with stirring for 10min per hour and the rotating speed of 8 r/min; the raw material enters an anaerobic fermentation stage, and the hydraulic retention time of the raw material is 20-25 days.
The utility model is mainly suitable for the resource utilization of crop straws and livestock and poultry manure. The biogas is prepared by combining straw and livestock and poultry manure with anaerobic fermentation, so that the aims of harmless, reduction and recycling treatment of agricultural solid wastes and livestock and poultry manure can be fulfilled. The organic fertilizer prepared from the biogas residues after anaerobic fermentation can also be applied to farmlands, so that the soil quality of the soil is effectively improved, and the soil fertility is improved. The utility model discloses can adjust the dirty proportion of straw and beasts and birds excrement according to actual demand, make the C/N ratio reach the suitable scope of growing of anaerobic microorganisms, provide good growing environment, improve the product efficiency for anaerobic fermentation microorganism.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.
Claims (7)
1. A straw and livestock and poultry manure pretreatment and combined anaerobic fermentation device is characterized by comprising a crushing device, a conveying device, a vertical enzymolysis tank, a heat preservation system and a horizontal anaerobic fermentation tank;
the crushing device comprises a first feeding hole, a crushing cutter head, a vibrating screen, a first discharging hole, a second discharging hole, a first base, a dust cover, a conveyor belt and a third discharging hole, the second discharging hole of the crushing device is positioned right above the conveyor belt, and crushed straws are conveyed to the conveyor belt through the conveyor belt;
the conveying device is provided with a second feeding hole, a packing auger, a fourth discharging hole and a second base, and the crushed straws are conveyed to a third feeding hole of the vertical enzymolysis tank through the conveying device;
the top of the vertical enzymolysis tank is provided with a third feed inlet and a first motor, a spray head and a first middle shaft are arranged inside the tank body, a rake defoamer and a rotary cutter head are mounted on the first middle shaft, a first sensor, a baffle, a dissolved oxygen electrode, a first temperature electrode and a first pH electrode are arranged on the side wall of the tank body, a fifth discharge outlet, a first sand discharge outlet and a third base are arranged at the bottom of the tank body, a heat preservation system, an aeration system, a heating and pressurizing system are arranged outside the vertical enzymolysis tank, and the fifth discharge outlet of the vertical enzymolysis tank is connected to a fourth feed inlet of the horizontal anaerobic fermentation tank through a second pump;
the heat preservation system is provided with a water heater and a valve, a first coiled pipe, a first water inlet and a first water outlet are respectively arranged in the vertical enzymolysis tank, and a second coiled pipe, a second water outlet and a second water inlet are arranged in the horizontal anaerobic fermentation tank;
the horizontal anaerobic fermentation tank is internally provided with a middle shaft II, a motor II and a stirring paddle are mounted on the middle shaft II, a feed inlet IV, an exhaust hole, a feed inlet V and a sensor III are arranged on the upper portion of the tank body, a base IV, a sand collecting tank, a temperature electrode II, a pH electrode II, a sand discharge port II and a discharge port VI are arranged on the lower portion of the tank body, a heat preservation device is arranged on the outer side of the tank body, biogas generated by anaerobic fermentation is discharged through the exhaust hole, and after anaerobic fermentation gas production is finished, residues are discharged through the discharge port VI.
2. The device for pretreatment of straw and livestock and poultry manure and combined anaerobic fermentation as claimed in claim 1, wherein the vibrating screen in the crushing device is installed below the crushing cutter head, and forms an angle of 6 ° with the horizontal ground.
3. The device of claim 1, wherein the aeration system comprises a ventilation pipe, an aeration pipe, a bacteria removing filter and an aeration fan, the aeration pipe is arranged on the periphery of the bottom of the vertical enzymolysis tank, the aeration pipe is connected with the bacteria removing filter, the bacteria removing filter is connected with the aeration fan, and the aeration fan is arranged on one side of the outside of the vertical enzymolysis tank.
4. The device for pretreatment and combined anaerobic fermentation of straw and livestock and poultry manure according to claim 1, wherein the heating and pressurizing system comprises a high-temperature steam port, a steam pipe, a steam generator, a steam pressurizing device and a steam pressurizing regulation system.
5. The pretreatment and combined anaerobic fermentation device for straw and livestock and poultry manure according to claim 1, characterized in that the vertical enzymolysis tank and the horizontal anaerobic fermentation tank share the same heat preservation system.
6. The pretreatment and combined anaerobic fermentation device for straw and livestock and poultry manure according to claim 1, wherein the horizontal anaerobic fermentation tank is a sealed tank, and the included angle between the central axis of the horizontal anaerobic fermentation tank and the horizontal ground is 8 degrees.
7. The device for pretreatment of straw and livestock manure and combined anaerobic fermentation as claimed in claim 1, wherein the side of the paddle of the stirring paddle is equipped with a cutting head.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223045391.8U CN218262480U (en) | 2022-11-16 | 2022-11-16 | Straw and livestock and poultry excrement pretreatment and combined anaerobic fermentation device |
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| CN202223045391.8U CN218262480U (en) | 2022-11-16 | 2022-11-16 | Straw and livestock and poultry excrement pretreatment and combined anaerobic fermentation device |
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| CN218262480U true CN218262480U (en) | 2023-01-10 |
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| CN202223045391.8U Active CN218262480U (en) | 2022-11-16 | 2022-11-16 | Straw and livestock and poultry excrement pretreatment and combined anaerobic fermentation device |
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