CN216550016U - Three-dimensional multifunctional methane tank - Google Patents

Abstract

The utility model discloses a three-dimensional multifunctional methane tank, which comprises a first layer structure and a second layer structure, wherein a solid-liquid separation workshop, a methane purification workshop and a power distribution chamber are arranged outside the first layer structure and the second layer structure, the first layer structure comprises a methane tank, a lower layer sewage collecting tank, a methane liquid temporary storage tank and a condensation water tank, and the second layer structure comprises an upper layer sewage collecting tank, a methane liquid physical sedimentation tank, a methane liquid concentration tank, a methane liquid sewage evaporation tank and a methane liquid evaporation tank; the scheme of the utility model adopts the combination of technologies of parallel connection of the tanks, temperature increase of a sunlight greenhouse, active temperature increase of the tank bottom, liquid stirring, double-layer temperature complementation, raw material concentration, methane backflow and the like, and integrates a series of functions of raw material pretreatment, anaerobic fermentation, biogas slurry primary processing, methane purification and the like, so that the conventional dispersed significant units are effectively combined, natural photothermal resources are fully utilized, the heat energy complementation of the upper layer and the lower layer is realized, the ancient floor area and the fixed investment are saved, the comprehensive operation cost is reduced, and the utility model has good market development prospect.

Description

Three-dimensional multifunctional methane tank

Technical Field

The utility model relates to the field of methane tanks, in particular to a three-dimensional, multifunctional and integrated methane anaerobic fermentation device, which aims to solve the general problems of high energy consumption, large investment, more occupied land and low efficiency of methane engineering in northern severe cold areas.

Background

Large and medium-sized biogas projects of large-scale farms in severe cold regions of China commonly adopt a method of thickening an external heat-insulating layer of an anaerobic tank to maintain operation in winter, so that the biogas projects are increased in fixed investment, low in efficiency, higher in comprehensive energy consumption, unstable in discharging quality and not thoroughly cured, and the later-stage fertilizer utilization of biogas residues and biogas slurry is limited. In order to reduce fixed investment, improve fermentation efficiency, reduce operation energy consumption and obtain biogas residue and biogas liquid fertilizer with stable quality, the design and development of a three-dimensional, multifunctional and integrated biogas anaerobic fermentation device is a problem which needs to be solved urgently by technical personnel in the related field.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a three-dimensional multifunctional biogas digester comprises a first layer structure and a second layer structure, wherein a solid-liquid separation workshop, a biogas purification workshop and a power distribution chamber are arranged outside the first layer structure and the second layer structure, the first layer structure comprises a plurality of biogas digesters arranged in an X direction, a lower layer sewage collecting tank, a biogas slurry temporary storage tank and a condensation water tank are sequentially arranged outside one of the most outside biogas digesters in a Y direction, the second layer structure comprises an upper layer sewage collecting tank, a biogas slurry physical sedimentation tank and a biogas slurry concentration tank which are sequentially arranged in the Y direction, a feces sewage evaporation tank is arranged at the upper part of one side of the upper layer sewage collecting tank, which is close to the lower layer sewage collecting tank, and a biogas slurry evaporation tank is arranged at the upper part of one side of the upper layer sewage collecting tank, which is close to the lower layer sewage collecting tank;

the lower layer sewage collecting tank receives externally introduced excrement and sewage, a top stirring device is arranged in the lower layer sewage collecting tank, and the lower layer sewage collecting tank is communicated with the upper layer sewage collecting tank in the second layer structure through a sewage pump; each methane tank is of an independent structure, a stirring pump is arranged in each methane tank, a heating coil pipe is additionally arranged at the bottom of each methane tank, and the bottom of each methane tank is communicated with a methane liquid temporary storage tank through a discharge pipe; a submersible sewage pump is arranged in the biogas slurry temporary storage tank, and biogas slurry in the biogas slurry temporary storage tank is extracted to a biogas slurry physical sedimentation tank in the second layer structure through the submersible sewage pump;

the upper-layer sewage collecting pool, the biogas slurry physical sedimentation pool and the biogas slurry concentration pool are respectively internally provided with a condensed water barrel bin, an evaporator and a condensing system, the top of the condensed water barrel bin is provided with a fan, the bottom of the condensed water barrel bin is communicated with a condensed water pool in the first-layer structure through a condensed water conduit, and the bottoms of the upper-layer sewage collecting pool, the biogas slurry physical sedimentation pool and the biogas slurry concentration pool are respectively discharged to a solid-liquid separation workshop through discharge pipes; a sludge scraper component is further arranged in the upper-layer sludge collecting tank, and a spiral discharger is arranged in a discharge pipe at the bottom of the physical biogas slurry sedimentation tank; the excrement sewage evaporation pond and the biogas slurry evaporation pond extract upper sewage of the biogas slurry concentration pond and spray the upper sewage in the excrement sewage evaporation pond and the biogas slurry evaporation pond through an atomization spraying device, the evaporation devices are arranged in the excrement sewage evaporation pond and the biogas slurry evaporation pond, and the bottoms of the evaporation devices are respectively communicated with the upper sewage collection pond and the biogas slurry physical sedimentation pond through discharge pipes.

Furthermore, the exterior of the first layer structure and the exterior of the second layer structure are provided with exterior walls through spaced passageways, the exterior walls at the lower parts of the first layer structure and the second layer structure are constructed by brickwork, the upper parts of the first layer structure and the second layer structure are steel frames, and sunlight plate wall surfaces are arranged outside the steel frames.

Furthermore, the number of the sewage collecting tanks is multiple, and the bottoms of the sewage collecting tanks, the biogas slurry physical sedimentation tank and the biogas slurry concentration tank are all inverted trapezoidal bottoms protruding downwards.

Furthermore, the heating coil pipe is arranged on the wall of the bottom of the methane tank in a penetrating manner, and a methane guide pipe and a methane return pipe which are connected with a methane purification workshop, and a heating main pipe and a heating branch pipe which are connected with the heating coil pipe are also arranged in the methane tank.

Furthermore, three partition walls are arranged at intervals along the X direction in the biogas slurry physical sedimentation tank, overflow ports are formed in the partition walls to enable the interior of the biogas slurry physical sedimentation tank to be communicated, a sewage pump is arranged in the biogas slurry physical sedimentation tank far away from one side of the biogas slurry evaporation tank, and sewage in the biogas slurry physical sedimentation tank is extracted to a solid-liquid separation workshop.

Further, the sludge scraper component comprises a twisted rope arranged along the length direction of the upper-layer sewage collecting pool, the twisted rope is provided with a sludge scraper, and one side of the upper-layer sewage collecting pool is provided with a winch for driving the twisted rope.

Further, evaporation plant is including setting up the pipe that heats in excrement sewage evaporation pond, natural pond liquid evaporation pond to and set up in the evaporation plant on excrement sewage evaporation pond, natural pond liquid evaporation pond upper portion.

Further, a solid-liquid separator and biogas slurry filtering equipment are arranged in the solid-liquid separation workshop, biogas slurry in a biogas slurry physical sedimentation tank is extracted by the biogas slurry filtering equipment for filtering, filtered liquid is guided into a biogas slurry concentration tank, and filtered solids are guided into the solid-liquid separator for re-separation.

Furthermore, a biogas dehydration device and a biogas desulfurization device are arranged in the biogas purification workshop.

Furthermore, liquid level alarms are arranged in the biogas slurry temporary storage tank, the upper layer sewage collecting tank, the biogas slurry physical sedimentation tank and the biogas slurry evaporation tank, harmful gas alarm devices are arranged in passageway spaces in the first layer structure and the second layer structure, and temperature monitoring devices are respectively arranged on each tank body.

After the scheme is adopted, the utility model has the following advantages: 1. the utility model integrates a series of functions of raw material pretreatment, anaerobic fermentation, biogas slurry primary processing, biogas purification and the like, effectively combines the conventional dispersed units, fully utilizes the complementation of natural photo-thermal resources and heat energy of an upper layer and a lower layer, saves the ancient floor area and fixed investment, reduces the comprehensive operation cost and has good market development prospect.

2. Compared with the original steel independent anaerobic digestion device, the scheme of the utility model reduces the investment by about 20 percent, saves the occupied land by more than 10 percent, reduces the comprehensive energy consumption by more than 20 percent, improves the production efficiency by more than 25 percent, is suitable for the annual stable production in northern alpine regions, solves the problem of pool bottom siltation because the anaerobic digestion device adopts a process mode of 'all-in all-out', more thoroughly and homogeneously digests the liquid dung, and is beneficial to the later-stage production of the biogas manure with stable quality.

3. Due to the adoption of the design of the inner and outer double-layer (inner container type) sunlight plate partition walls, the generated sunlight greenhouse effect heats the anaerobic tank and the concentration facilities, and simultaneously ensures the operation safety of various pipelines, valves and other facilities outside the tank in severe cold seasons, directly reduces the energy consumption and reduces the maintenance cost.

4. Because the raw material concentration and bottom discharge technology are adopted, the scheme of the utility model is suitable for treating the excrement sewage with low dry matter content, such as the sewage of a pig slaughter house.

5. The embodiment provided by the multifunctional methane tank in the scheme of the utility model is not limited to the number of the existing methane tanks, and the number of the methane tanks can be increased or decreased according to the actual amount of the excrement and sewage, including the expansion or reduction of the effective tank volume. Because the parallel methane tank adopts a methane reflux method, an anaerobic environment can be quickly established when new materials enter, thereby improving the reaction efficiency.

6. The scheme of the utility model adopts the combination of technologies of parallel connection of the tank bodies, temperature increase of a sunlight greenhouse, active temperature increase of the tank bottom, liquid stirring, double-layer temperature complementation, raw material concentration, methane backflow and the like, greatly reduces the investment, breaks through the bottlenecks of single temperature increase mode, slow temperature increase and high energy consumption in the prior art, ensures that the whole project is more stable and reliable in operation, effectively improves the adaptability and higher production efficiency of the methane project, and has good practical value.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a first layer structure in a three-dimensional multifunctional methane tank of the present invention.

FIG. 2 is a schematic view of a second layer structure in the three-dimensional multifunctional methane tank of the present invention.

Fig. 3 is a schematic view of the utility model in a cross-section taken transversely to the letter a in fig. 1.

Fig. 4 is a schematic view of the utility model in a cross-section taken transversely along the letter B in fig. 1.

Fig. 5 is a schematic view of the utility model in longitudinal section along the numeral 1 in fig. 1.

Fig. 6 is a schematic view of the utility model in longitudinal section along the numeral 3 in fig. 1.

Fig. 7 is a right side schematic view of the utility model in fig. 1 taken along the longitudinal cross-section designated by the numeral 10.

Fig. 8 is a schematic view of the utility model in longitudinal section along the numeral 9 in fig. 1.

Fig. 9 is a left side schematic view of the utility model in fig. 1 taken along the longitudinal cross-section designated by the numeral 10.

Fig. 10 is a schematic view of the utility model in longitudinal section along the numeral 8 in fig. 1.

Fig. 11 is a left side schematic view of the utility model in fig. 1 taken in transverse cross-section along the letter B.

Fig. 12 is a right side schematic view of the utility model in cross section taken transversely along the letter B in fig. 1.

Fig. 13 is a left side schematic view of the utility model in fig. 1 taken in a transverse cross-section along the letter G.

Fig. 14 is a schematic view of the utility model from the right side of fig. 1 taken in a transverse section along the letter G.

Fig. 15 is a schematic view of the utility model in a transverse cross-section taken along the letter B in fig. 2.

Fig. 16 is a schematic view of the utility model in a cross-section taken transversely of the letter E in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, or an orientation or a positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience and simplicity, and the indication or the suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, the present invention should not be construed as being limited. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

With the combination of attached drawings 1 and 2, a three-dimensional multifunctional methane tank comprises a first layer structure A and a second layer structure B, wherein a solid-liquid separation workshop 1, a methane purification workshop 2 and a power distribution chamber 3 are arranged outside the first layer structure A and the second layer structure B; the second layer is a raw material collecting and treating area, a biogas slurry treating area and a biogas treating area, and the main units are a sewage collecting pool (double pools) and a fecal sewage concentrating pool, a biogas slurry settling pool and a biogas slurry concentrating pool, and a biogas purification and solid-liquid separation workshop; the method specifically comprises the following steps: the first layer structure A comprises a plurality of methane tanks 4 arranged along the X direction, a lower layer sewage collecting tank 5, a methane liquid temporary storage tank 6 and a condensation water tank 7 are sequentially arranged outside the methane tank 4 at the outermost side along the Y direction, the second layer structure B comprises an upper layer sewage collecting tank 8, a methane liquid physical sedimentation tank 9 and a methane liquid concentration tank 10 which are sequentially arranged along the Y direction, a feces sewage evaporation tank 11 is arranged at the upper part of one side of the upper layer sewage collecting tank 8 close to the lower layer sewage collecting tank 5, and a methane liquid evaporation tank 12 is arranged at the upper part of one side of the methane liquid physical sedimentation tank 9 and the methane liquid concentration tank 10 close to the lower layer sewage collecting tank 5;

referring to fig. 11, the lower sewage collecting tank 5 receives the externally introduced liquid dung and sewage, a top stirring device 13 is arranged in the lower sewage collecting tank 5, and the lower sewage collecting tank 5 is communicated with the upper sewage collecting tank 8 in the second layer structure B through a sewage pump 14; each methane tank 4 is of an independent structure, a stirring pump 15 is arranged in each methane tank 4, a heating coil pipe 16 is additionally arranged at the bottom of each methane tank 4, the bottom of each methane tank 4 is communicated with a temporary methane liquid storage tank 6 through a discharge pipe 17, the heating coil pipe 16 is arranged on the bottom wall of each methane tank 4 in a penetrating manner, and a methane guide pipe 30 and a methane return pipe 31 which are connected with a methane purification workshop, and a heating main pipe 32 and a heating branch pipe 33 which are connected with the heating coil pipe 16 are also arranged in each methane tank 4; a submersible sewage pump is arranged in the biogas slurry temporary storage tank 17, and biogas slurry in the biogas slurry temporary storage tank 17 is extracted to a biogas slurry physical sedimentation tank 9 in the second layer structure B through the submersible sewage pump; with reference to fig. 6, the number of the sewage collecting tanks 9 is plural, and the bottoms of the sewage collecting tanks 9, the biogas slurry physical sedimentation tank 9 and the biogas slurry concentration tank 10 are all inverted trapezoidal bottoms protruding downwards.

With reference to fig. 15 and 16, a condensed water barrel bin 18, an evaporator 19 and a condensing system 20 are respectively arranged in the upper-layer sewage collecting tank 8, the biogas slurry physical sedimentation tank 9 and the biogas slurry concentration tank 10, a fan 21 is arranged at the top of the condensed water barrel bin 18, the bottom of the condensed water barrel bin is communicated with a condensed water 7 tank in the first-layer structure a through a condensed water guide pipe 22, and the bottoms of the upper-layer sewage collecting tank 8, the biogas slurry physical sedimentation tank 9 and the biogas slurry concentration tank 10 are respectively discharged to the solid-liquid separation plant 1 through a discharge pipe 23; a sludge scraper component is also arranged in the upper-layer sewage collecting tank 8, the sludge scraper component comprises a twisted rope 37 arranged along the length direction of the upper-layer sewage collecting tank 8, a sludge scraper 38 is arranged on the twisted rope 37, a winch 39 for driving the twisted rope 37 is arranged on one side of the upper-layer sewage collecting tank 8, and a spiral discharger 24 is arranged in a discharge pipe 23 at the bottom of the biogas slurry physical sedimentation tank 9; excrement sewage evaporation pond 11, natural pond liquid evaporation pond 12 extracts natural pond liquid concentration tank upper sewage, spray in excrement sewage evaporation pond 11 through atomizing sprinkler, in natural pond liquid evaporation pond 12, excrement sewage evaporation pond 11, set up evaporation plant in the natural pond liquid evaporation pond 12, evaporation plant is including setting up in excrement sewage evaporation pond 11, the heating tube 40 in the natural pond liquid evaporation pond 12, and set up in excrement sewage evaporation pond 11, the evaporation plant 41 on natural pond liquid evaporation pond 12 upper portion, its bottom is respectively through arranging material pipe 25 and upper album dirty pond 8, natural pond liquid physics sedimentation tank 9 intercommunication.

Referring to fig. 16, three partition walls 34 are arranged at intervals along the X direction in the biogas slurry physical sedimentation tank 9, overflow ports 35 are arranged on the partition walls 34 to communicate the inside of the biogas slurry physical sedimentation tank 9, a sewage pump 36 is arranged in the biogas slurry physical sedimentation tank 9 at one side far away from the biogas slurry evaporation tank 12, and sewage in the biogas slurry physical sedimentation tank 9 is extracted to the solid-liquid separation plant 1.

A solid-liquid separator and biogas slurry filtering equipment are arranged in the solid-liquid separation workshop 1, biogas slurry in a biogas slurry physical sedimentation tank is extracted by the biogas slurry filtering equipment for filtering, filtered liquid is led into a biogas slurry concentration tank, and filtered solids are led into the solid-liquid separator for re-separation. A marsh gas dehydration device and a marsh gas desulfurization device are arranged in the marsh gas purification workshop 2.

The upper part of each unit pool body adopts a sunlight plate partition wall and a light copper frame structure, the lower half part of an outer wall is of a masonry structure, and all roofs are sunlight plates and light steel frame structures to form a plurality of closed independent units so as to improve the heat efficiency; the lower half part of one layer of outer wall is constructed by brickwork (bricks or aerated concrete blocks), the upper half part is supported by a sunlight plate as a wall surface and a light steel frame, and simultaneously, the lighting and the heat preservation are both considered; with reference to fig. 3, 5, 7 and 8, the exterior of the first layer structure a and the second layer structure B are provided with exterior walls 27 through an interval passage 26, the exterior walls 27 at the lower parts of the first layer structure a and the second layer structure B are constructed by brickwork 28, the upper parts of the first layer structure a and the second layer structure B are steel frames, and the exterior of the steel frames is provided with a sunlight panel wall 29.

Liquid level alarms are arranged in the biogas slurry temporary storage tank, the upper layer sewage collecting tank, the biogas slurry physical sedimentation tank and the biogas slurry evaporation tank, harmful gas alarm devices are arranged in passageway spaces in the first layer structure and the second layer structure, and temperature monitoring devices are respectively arranged on each tank body.

In the specific implementation, (1) the fecal sewage introduced from the outside of the first layer of sewage collecting tank is stirred by the arranged top for homogenate and then is extracted to the second layer of sewage collecting tank by the submersible sewage pump, and the tank can be additionally provided with an impurity removal facility;

(2) the second layer of sewage collecting tank is of a double-tank structure, a condensate water barrel bin, a barrel top fan, a sludge scraper blade, a condensing system and a tank bottom discharging pipe are arranged in the tank, the second layer of sewage collecting tank can collect excrement sewage and also can reduce the water content of materials by using the concentrating system, the concentration of the discharged excrement sewage is greatly improved to 8-15% by using the sludge scraper blade and a bottom discharging device for natural sedimentation, raw materials are provided for the methane tank of the first layer, and meanwhile, the height of the second layer of sewage collecting tank is higher than that of the anaerobic tank, so that the power consumption can be reduced by pumping;

(3) the fecal sewage evaporation tank extracts fecal sewage with lower concentration at the upper layer in the biogas slurry concentration tank, sprays the fecal sewage into the fecal sewage evaporation tank in a mist form, improves the concentration efficiency by improving the water temperature and the action of an evaporation device, and returns the materials to the two upper layer sewage collecting tanks after the materials are concentrated to a certain degree;

(4) the first layer of methane tank adopts a parallel structure, wherein a single tank is an independent anaerobic tank, the methane tank adopts a red film flexible methane fermentation device, adopts a frame structure, is additionally provided with a liquid stirring pump, is additionally provided with a heating coil pipe at the bottom, and is provided with a sunlight plate partition wall at the part above the concrete tank wall of each tank to form a relatively independent unit; each methane tank comprises a methane outlet and return pipe, a raw material inlet pipe, a methane liquid outlet pipe and a heating inlet and outlet pipe through the combination of various main pipes and branch pipes to form a single integral anaerobic main body structure;

(5) biogas slurry discharged from the biogas digester is discharged to a biogas slurry temporary storage tank through a discharge pipe, and is extracted to a second layer biogas slurry physical sedimentation tank through a submersible sewage pump, a liquid level alarm device can be additionally arranged in the tank, and meanwhile, the liquid level alarm device and the submersible sewage pump can be interlocked to be opened and closed, so that automatic control is realized;

(6) set up three partition walls in the natural pond liquid physics sedimentation tank, overflow mouth is stayed on partition wall upper portion, and the bottom of the pool sets up the discharge gate to send the natural pond sediment to the solid-liquid separation workshop through shaftless spiral slag discharging device, set up concentrated system in the pond, discharge lower floor's condensate water pond through the pipe after the comdenstion water bucket storehouse is collected the comdenstion water. The sunlight plate wall body and the light steel frame are additionally arranged at the upper part of the periphery of the concrete pool wall of the whole pool to form an independent concentration unit; a sewage pump is arranged in the last sedimentation tank, and liquid is extracted to a solid-liquid separation workshop for further processing;

(7) the upper layer of the solid-liquid separation workshop consists of a solid-liquid separator and biogas slurry filtering equipment (not shown in the attached drawing), the solid-liquid separator separates biogas residues and falls into the next layer through a blanking port, liquid flows back to the sedimentation tank, the biogas slurry filtering equipment (optional sandstone filter and disc filter) extracts biogas slurry from the last tank of the sedimentation tank for filtering, the liquid is led into a biogas slurry concentration tank, and the solid is separated by the solid-liquid separator.

(8) The structure of the biogas slurry concentration tank is the same as that of the second layer of the sewage collection tank, and the difference is that a sludge scraper is not arranged for collecting the treated biogas slurry.

(9) The second layer of biogas slurry evaporation tank is the same as the fecal sewage evaporation tank, and the material of the second layer of biogas slurry evaporation tank is from the biogas slurry extracted from the biogas slurry concentration tank, so that the concentration efficiency is increased;

(10) the condensation water tank collects the condensation water from each condensation water barrel bin, provides condensation circulating water for the condensation system, and leads the excess water out of the chamber;

(11) the second layer of methane purification workshop consists of two sets of purification equipment (not shown in the attached drawing) for methane dehydration and desulfurization, and is used for purifying methane for the next link;

(12) the first layer of comprehensive matching area consists of a power supply and distribution room and a biogas residue transfer room and is an auxiliary matching facility of the whole project.

(13) At least 4 sets of harmful gas alarm devices are additionally arranged at the middle position of the passageway, and electric valves are arranged on the biogas guide pipe, the biogas return pipe, the feeding branch pipe and the barrel bin lower condensate pipe so as to facilitate automatic control; the biogas slurry temporary storage tank, the two-layer sewage collecting tank, the sedimentation tank and the biogas slurry concentration tank are all provided with a tank liquid level alarm device (not shown in the attached drawing), and each biogas fermentation unit is respectively provided with a set of temperature monitoring facilities (not shown in the attached drawing).

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should be able to conceive of the present invention without creative design of the similar structural modes and embodiments without departing from the spirit of the present invention, and all such modifications should fall within the protection scope of the present invention.

Claims (10)

1. A three-dimensional multifunctional methane tank is characterized by comprising a first layer structure and a second layer structure, wherein a solid-liquid separation workshop, a methane purification workshop and a power distribution chamber are arranged outside the first layer structure and the second layer structure, the first layer structure comprises a plurality of methane tanks arranged along the X direction, a lower layer sewage collecting tank, a methane liquid temporary storage tank and a condensation water tank are sequentially arranged outside one methane tank at the outermost side along the Y direction, the second layer structure comprises an upper layer sewage collecting tank, a methane liquid physical sedimentation tank and a methane liquid concentration tank which are sequentially arranged along the Y direction, a feces sewage evaporation tank is arranged at the upper part of one side of the upper layer sewage collecting tank, which is close to the lower layer sewage collecting tank, and a methane liquid evaporation tank is arranged at the upper part of one side of the methane liquid physical sedimentation tank and the methane liquid concentration tank, which is close to the lower layer sewage collecting tank;

the lower layer sewage collecting tank receives externally introduced excrement and sewage, a top stirring device is arranged in the lower layer sewage collecting tank, and the lower layer sewage collecting tank is communicated with the upper layer sewage collecting tank in the second layer structure through a sewage pump; each methane tank is of an independent structure, a stirring pump is arranged in each methane tank, a heating coil pipe is additionally arranged at the bottom of each methane tank, and the bottom of each methane tank is communicated with a methane liquid temporary storage tank through a discharge pipe; a submersible sewage pump is arranged in the biogas slurry temporary storage tank, and biogas slurry in the biogas slurry temporary storage tank is extracted to a biogas slurry physical sedimentation tank in the second layer structure through the submersible sewage pump;

the upper-layer sewage collecting pool, the biogas slurry physical sedimentation pool and the biogas slurry concentration pool are respectively internally provided with a condensed water barrel bin, an evaporator and a condensing system, the top of the condensed water barrel bin is provided with a fan, the bottom of the condensed water barrel bin is communicated with a condensed water pool in the first-layer structure through a condensed water conduit, and the bottoms of the upper-layer sewage collecting pool, the biogas slurry physical sedimentation pool and the biogas slurry concentration pool are respectively discharged to a solid-liquid separation workshop through discharge pipes; a sludge scraper component is further arranged in the upper-layer sludge collecting tank, and a spiral discharger is arranged in a discharge pipe at the bottom of the physical biogas slurry sedimentation tank; the excrement sewage evaporation pond and the biogas slurry evaporation pond extract upper sewage of the biogas slurry concentration pond and spray the upper sewage in the excrement sewage evaporation pond and the biogas slurry evaporation pond through an atomization spraying device, the evaporation devices are arranged in the excrement sewage evaporation pond and the biogas slurry evaporation pond, and the bottoms of the evaporation devices are respectively communicated with the upper sewage collection pond and the biogas slurry physical sedimentation pond through discharge pipes.

2. The stereoscopic multifunctional methane tank of claim 1, wherein the first layer structure and the second layer structure are externally provided with external walls through the separation passages, the external walls at the lower parts of the first layer structure and the second layer structure are constructed by brickwork, the upper parts of the first layer structure and the second layer structure are provided with steel frames, and the outside of the steel frames are provided with sunlight panel walls.

3. The stereoscopic multifunctional methane tank according to claim 1, wherein the number of the sewage collecting tanks is plural, and the bottoms of the sewage collecting tanks, the physical methane liquid sedimentation tank and the physical methane liquid concentration tank are all inverted trapezoidal bottoms protruding downwards.

4. The stereoscopic multifunctional methane tank of claim 1, wherein the heating coil pipe is arranged on the tank wall at the bottom of the methane tank in a penetrating manner, and a methane conduit and a methane return pipe which are connected with a methane purification workshop, and a heating main pipe and a heating branch pipe which are connected with the heating coil pipe are further arranged in the methane tank.

5. The stereoscopic multifunctional methane tank according to claim 1, wherein three partition walls are arranged at intervals along the X direction in the physical methane tank, overflow ports are arranged on the partition walls to communicate the interior of the physical methane tank, and a sewage pump is arranged in the physical methane tank far away from the evaporation tank to extract sewage in the physical methane tank to a solid-liquid separation plant.

6. The stereoscopic multifunctional methane tank of claim 1, wherein the sludge scraper assembly comprises a twisted rope arranged along the length direction of the upper-layer sludge collection tank, the twisted rope is provided with a sludge scraper, and one side of the upper-layer sludge collection tank is provided with a winch for driving the twisted rope.

7. The stereoscopic multifunctional methane tank of claim 1, wherein the evaporation device comprises a warming pipe arranged in the fecal sewage evaporation tank and the methane liquid evaporation tank, and an evaporation device arranged at the upper part of the fecal sewage evaporation tank and the methane liquid evaporation tank.

8. The stereoscopic multifunctional biogas digester as claimed in claim 1, wherein a solid-liquid separator and a biogas slurry filtering device are arranged in the solid-liquid separation workshop, the biogas slurry filtering device extracts biogas slurry in the biogas slurry physical sedimentation tank for filtering, the filtered liquid is led into the biogas slurry concentration tank, and the filtered solid is led into the solid-liquid separator for re-separation.

9. The stereoscopic multifunctional methane tank of claim 1, wherein a methane dehydration device and a methane desulfurization device are arranged in the methane purification plant.

10. The stereoscopic multifunctional methane tank of claim 1, wherein liquid level alarms are disposed in the temporary methane tank, the upper sewage collecting tank, the physical methane tank and the evaporation methane tank, harmful gas alarms are disposed in aisle spaces in the first layer structure and the second layer structure, and temperature monitoring devices are respectively mounted on the methane tanks.

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