CN204779595U - Ferment tank for marsh gas - Google Patents
Ferment tank for marsh gas Download PDFInfo
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- CN204779595U CN204779595U CN201520292054.XU CN201520292054U CN204779595U CN 204779595 U CN204779595 U CN 204779595U CN 201520292054 U CN201520292054 U CN 201520292054U CN 204779595 U CN204779595 U CN 204779595U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The utility model discloses a ferment tank for marsh gas, including inclosed fermented tank shell, natural pond liquid feed inlet set up in with fermentation tank shell in on the relative fermented tank shell's in the supernatant layer of natural pond liquid jar wall, liquid feed inlet department is provided with a sealing device in the natural pond, on the marsh gas gas vent set up the fermented tank shell's above biogas fluid level jar wall, the department was provided with the first control valve at the marsh gas gas vent, the sediment arrange the cinder notch set up in with fermentation tank shell in on the relative fermented tank shell's in the sediment layer of natural pond liquid the jar wall, the department is provided with the 2nd sealing device at sediment row cinder notch, the 2nd sealing device is connected with the second control valve, still be provided with the heat transfer agitating unit that can adjust natural pond liquid temperature and stir mixing natural pond liquid in fermentation tank shell, heat transfer agitating unit set up in the active layer of natural pond liquid to drive by drive arrangement. It is effectual that this ferment tank for marsh gas has the heat transfer of natural pond liquid stirring function and heat exchange tube and natural pond liquid.
Description
Technical field
The utility model relates to biogas fermentation equipment technical field, particularly relates to a kind of marsh-gas fermentation tank.
Background technology
Biogas fermentation is also known as anaerobic digestion or anaerobically fermenting, refer to that organic substance is (as the ight soil of people and animals poultry, stalk, bits shell, weeds etc.) at certain moisture, under temperature and anaerobic condition, be the flammable mixed gas of main component with methane by anaerobion metabolism generation, this flammable mixed gas is referred to as biogas, wherein temperature is one of principal element affecting biogas yield, participate in most important methanogen in metabolic anaerobion and need continuous metabolism and generative propagation under suitable temperature environment, just can reach higher biogas yield.If temperature is more high or low than the optimal temperature needed for it, its growth all may be suppressed, is even difficult to survival.The optimal temperature of microorganism needed for it participating in anaerobically fermenting can be divided into psychrophile, addicted to warm nature microorganism and high temperature resistant microorganism, the optimal temperature of psychrophile is lower than 20 DEG C, its degradation effect of organic compound and biogas production rate lower, thus at such a temperature anaerobically fermenting run uneconomical; High temperature resistant microorganism Suitable ranges is generally 50-60 DEG C, but the methanogen kind existed in the case of a high temperature is less, therefore it is very responsive to the interference occurred in organism supply or marsh-gas fermentation tank operational process in anaerobic fermentation process, the stability of anaerobically fermenting cannot be maintained, and for maintaining high temperature and the energy that needs is higher, thus under this temperature conditions, anaerobically fermenting operation is also uneconomical.The optimum growth temp of most of known methanogen is all within the scope of 37-42 DEG C, thus, temperature during anaerobically fermenting actual motion generally controls within the scope of middle temperature 20-45 DEG C, and in this temperature range, the stability of anaerobically fermenting is better, biogas output is also relatively high.Carrying out, in anaerobic fermentation process, not only will considering the production capacity of biogas, also will be thought of as the energy that in maintenance, temperature consumes, thus the best of anaerobically fermenting clean production capacity temperature general control is within the scope of 30-40 DEG C.In actual anaerobically fermenting operational process, be positioned in airtight marsh-gas fermentation tank by the natural pond liquid be mixed to form by organic substance and water and carry out biogas fermentation, the natural pond liquid in usual marsh-gas fermentation tank can form scum layer, supernatant layer, active coating and sediment layer from top to bottom.Because the most of region temperature of China is lower than 30 DEG C, thus need to heat the natural pond liquid in marsh-gas fermentation tank.Marsh-gas fermentation tank common at present, at the bottom of the tank of marsh-gas fermentation tank and tank skin surrounding heat transfer tube is set, by heat transfer tube, the natural pond liquid in marsh-gas fermentation tank is heated, but because the heat conductivility of natural pond liquid is poor, the natural pond liquid that is positioned in the middle part of marsh-gas fermentation tank and the natural pond liquid that is positioned near heat transfer tube will be caused like this to there is the larger temperature difference, and thus the heat transfer effect of heat transfer tube and natural pond liquid is not very desirable; In addition, because the heat conductivility of natural pond liquid is poor, and heat transfer tube is only arranged at the bottom of the tank of marsh-gas fermentation tank and tank skin, and shape and the size of such fermentor tank are just restricted.In addition, because the viscosity of natural pond liquid is higher, in long-term anaerobic fermentation process, the easy fouling of tube wall of heat transfer tube, can reduce the heat transfer effect of heat transfer tube and natural pond liquid so further, thus affect biogas yield.
Utility model content
The required technical problem solved of the utility model is: provide one to have agitating function, and can make heat transfer tube and the uniform marsh-gas fermentation tank of natural pond liquid heat exchange.
For solving the problem, the technical solution adopted in the utility model is: described marsh-gas fermentation tank, comprises airtight fermentor tank housing, and the tank skin of fermentor tank housing is respectively arranged with natural pond liquid opening for feed, sediment slag-drip opening and biogas venting port; Described natural pond liquid opening for feed is arranged on the tank skin of the fermentor tank housing relative with the supernatant layer of natural pond liquid in fermentor tank housing, natural pond liquid opening for feed communicates with the supernatant layer of natural pond liquid in fermentor tank housing, be provided with at liquid opening for feed place, natural pond and can allow organism enters, gas but can not enter the first tightness system in fermentor tank housing, organism is by entering in fermentor tank housing after the first tightness system, natural pond liquid opening for feed; Described biogas venting port is arranged on the tank skin of the fermentor tank housing of natural pond liquid ullage, and biogas exhaust ports is provided with the first control valve, and the biogas in fermentor tank housing is by discharging outside fermentor tank housing after biogas venting port, the first control valve; Described sediment slag-drip opening is arranged on the tank skin of the fermentor tank housing relative with the sediment layer of natural pond liquid in fermentor tank housing, sediment slag-drip opening communicates with the sediment layer of natural pond liquid in fermentor tank housing, be provided with at sediment slag-drip opening place and can allow the sediment in fermentor tank housing is discharged, ambient atmos but can not enter the second tightness system in fermentor tank housing, second tightness system is connected with the second control valve, and the sediment in fermentor tank housing is by discharging outside fermentor tank housing after sediment slag-drip opening, the second tightness system, the second control valve; Also be provided with in fermentor tank housing and can regulate natural pond liquid temp and the heat exchange whipping appts of stirring and evenly mixing natural pond liquid, described heat exchange whipping appts is arranged in the active coating of the natural pond liquid be in stratification state, also be provided with the drive unit driving heat exchange whipping appts to stir natural pond liquid in fermentor tank hull outside, the active coating of natural pond liquid, supernatant layer and scum layer can mix by heat exchange whipping appts under the driving of drive unit.
Further, aforesaid marsh-gas fermentation tank, wherein, the structure of the first described tightness system comprises: hopper, the discharge port of hopper lower end is connected with natural pond liquid opening for feed, part natural pond liquid in fermentor tank housing is spilled over to hopper to be formed from natural pond liquid opening for feed and can stops that outside air enters the water sealing device in biogas fermentation tank shell, and the upper surface of the opening for feed of hopper upper end is higher than the liquid level of natural pond liquid in hopper.
Further, aforesaid marsh-gas fermentation tank, wherein, the structure of the second described tightness system comprises: discharge pipe, the opening for feed of discharge pipe lower end is connected with sediment slag-drip opening, the discharge port of discharge pipe upper end sidewall is connected with the second control valve, part natural pond liquid in fermentor tank housing is spilled over to discharge pipe to be formed from sediment layer slag-drip opening and can stops that outside air enters the water sealing device in biogas fermentation tank shell, the upper surface of discharge pipe is higher than the liquid level of natural pond liquid in fermentor tank housing, sediment can in fermentor tank housing the gaseous tension of natural pond liquid and biogas effect under extrude from discharge pipe.
Further, aforesaid marsh-gas fermentation tank, wherein, the structure of described heat exchange whipping appts comprises: rotation center pipe, rotation center pipe is by being arranged at rolling bearing lateral support on the tank skin of fermentor tank housing both sides in fermentor tank housing, and rotation center pipe two ends are stretched out outside fermentor tank housing from the through hole the tank skin of fermentor tank housing both sides respectively, the 3rd tightness system preventing natural pond liquid from outwards releasing from the gap between the through hole rotation center pipe and fermentor tank housing both sides tank skin is also respectively arranged with between through hole on rotation center pipe and fermentor tank housing both sides tank skin, sealing member is provided with in rotation center pipe, rotation center pipe is separated into mutual disconnected water inlet rotation center pipe and water outlet rotation center pipe by sealing member, the water inlet rotation center pipe stretched out outside fermentor tank housing is connected with water inlet pipe by the first swivel joint, and the water outlet rotation center pipe stretched out outside fermentor tank housing is connected with rising pipe by the second swivel joint, rotation center pipe is also provided with at least one group of heat transfer tube, the water-in often organizing heat transfer tube is all connected with water inlet rotation center pipe, the water outlet often organizing heat pipe is all connected with water outlet rotation center pipe, the current of the band certain temperature entered from water inlet pipe enter each heat transfer tube by the first swivel joint, water inlet rotation center pipe, by water outlet rotation center pipe, second swivel joint and rising pipe export fermentor tank housing outside after carrying out indirect heat exchange with the natural pond liquid outside each group of heat transfer tube, described drive unit can drive rotation center pipe to rotate, thus drives each group of heat transfer tube to rotate, and then the active coating of natural pond liquid, supernatant layer and scum layer is mixed.
Further, aforesaid marsh-gas fermentation tank, wherein, the 3rd described tightness system is mechanical seal ring, and mechanical seal ring is arranged between the through hole on the tank skin of water outlet rotation center pipe and fermentor tank housing and between the through hole of intaking on the tank skin of rotation center pipe and fermentor tank housing respectively.
Further, aforesaid marsh-gas fermentation tank, wherein, described sealing member is be arranged at the blind plate in the middle part of rotation center pipe, and rotation center pipe is separated into mutual disconnected water inlet rotation center pipe and water outlet rotation center pipe by blind plate.
Further, aforesaid marsh-gas fermentation tank, wherein, often organize heat transfer tube to form by two circulating picture-changing heat pipes, each circulating picture-changing heat pipe includes the inlet channel be communicated with rotation center pipe of intaking, the outlet conduit be communicated with water outlet rotation center pipe and the circulating line being connected inlet channel and outlet conduit, described circulating line is connected and composed by the U-shaped pipe head and the tail of some arranged transverselys, inlet channel, circulating line and outlet conduit formation are positioned at conplane circulating picture-changing heat pipe, two circulating picture-changing heat pipes are symmetricly set in rotation center pipe both sides, and two symmetrically arranged circulating picture-changing heat pipes and rotation center pipe are positioned at same plane.
Further, aforesaid marsh-gas fermentation tank, wherein, is also fixedly installed some fixed discs between each group of heat transfer tube and rotation center pipe.
Further, aforesaid marsh-gas fermentation tank, wherein, described drive unit comprises: drive-motor, the output terminal of drive-motor is connected with transmission mechanism by step-down gear, the output terminal of transmission mechanism is connected with water inlet rotation center pipe or water outlet rotation center pipe, and drive-motor can drive rotation center pipe to rotate by step-down gear, transmission mechanism, thus drives each group of heat transfer tube the active coating of natural pond liquid, supernatant layer and scum layer to be mixed.
Further, aforesaid marsh-gas fermentation tank, wherein, described transmission mechanism is chain drive, and chaindriven drive sprocket is connected with the output terminal of step-down gear, and chaindriven driven sprocket is connected with water inlet rotation center pipe or water outlet rotation center pipe.
The marsh-gas fermentation tank of fed batch, natural pond liquid in marsh-gas fermentation tank usually natural sedimentation is divided into four layers, be followed successively by scum layer, supernatant layer, active coating and sediment layer from top to bottom, the movable comparatively vigorous place of anaerobion is only limitted to active coating, and other each layer or because of can be utilized carry out anaerobically fermenting organism lack, or be not suitable for the existence of microorganism because of condition, and anaerobically fermenting is made to be difficult to carry out at other each layer.The utility model breaks the demixing phenomenon of natural pond liquid by the heat exchange whipping appts be arranged in active coating, by the natural pond liquid mixing in scum layer, supernatant layer and active coating, in all natural ponds liquid allowing the living environment of applicable anaerobion expand to above sediment layer, improve the utilization ratio of natural pond liquid.
The beneficial effects of the utility model are: one, the first tightness system and the second tightness system can prevent outside air from entering in fermentor tank housing, ensure anaerobion continuous metabolism and generative propagation under anaerobic environment always in fermentor tank housing; Two, can by the active coating of natural pond liquid, supernatant layer and scum layer stirring and evenly mixing when the heat exchange whipping appts be arranged in active coating works, in all natural ponds liquid allowing the living environment of applicable anaerobion expand to above sediment layer, if heat exchange whipping appts is arranged in other layer of natural pond liquid, be difficult to obtain this technique effect, carry out stirring to natural pond liquid simultaneously and can also promote being separated of biogas and natural pond liquid; Three, heat transfer tube can also carry out indirect heat exchange to natural pond liquid while stirring natural pond liquid, and temperature distribution is homogeneous everywhere for the natural pond liquid that so just can make in fermentor tank housing, effectively improves the heat transfer effect of heat transfer tube and natural pond liquid; Four, in addition, heat transfer tube is in relative movement state with natural pond liquid in stirring heat transfer process always, thus not easily occurs scale formation in pipe wall of heat exchange pipe, has so just ensured the heat transfer effect of heat transfer tube and natural pond liquid, ensure the stability of anaerobically fermenting, thus substantially increase biogas production rate; Can organize heat transfer tube to increase the heat interchanging area of heat transfer tube and natural pond liquid according to the shape of fermentor tank housing and size and the corresponding increase of natural pond liquid institute energy requirement in actual use, the shape of fermentor tank housing and size are substantially unrestricted more.
Accompanying drawing explanation
Fig. 1 is the structural representation of marsh-gas fermentation tank described in the utility model.
Fig. 2 is the structural representation after removing natural pond liquid opening for feed, the first tightness system, sediment relief outlet, the second tightness system, the second control valve in Fig. 1.
Fig. 3 is the structural representation of heat exchange whipping appts in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, technical scheme described in the utility model is described in further detail.
As shown in Figure 1, the marsh-gas fermentation tank described in the present embodiment, comprises airtight fermentor tank housing 1, and the tank skin of fermentor tank housing 1 is respectively arranged with natural pond liquid opening for feed 12, sediment slag-drip opening 13 and biogas venting port 11; Described natural pond liquid opening for feed 12 is arranged on the tank skin of the fermentor tank housing 1 relative with the supernatant layer of natural pond liquid 10 in fermentor tank housing 1, natural pond liquid opening for feed 12 communicates with the supernatant layer of natural pond liquid 10 in fermentor tank housing 1, be provided with at liquid opening for feed 12 place, natural pond and can allow organism enters, gas but can not enter the first tightness system in fermentor tank housing 1, organism is by entering in fermentor tank housing 1 after the first tightness system, natural pond liquid opening for feed 12; Described biogas venting port 11 is arranged on the tank skin of fermentor tank housing 1 of the ullage of natural pond liquid 10, biogas venting port 11 place is provided with the first control valve 41, and the biogas in fermentor tank housing 1 is by discharging outside fermentor tank housing 1 after biogas venting port 11, first control valve 41; Described sediment slag-drip opening 13 is arranged on the tank skin of the fermentor tank housing 1 relative with the sediment layer of natural pond liquid 10 in fermentor tank housing 1, sediment slag-drip opening 13 communicates with the sediment layer of natural pond liquid 10 in fermentor tank housing, be provided with at sediment slag-drip opening 13 place and can allow the sediment in fermentor tank housing 1 is discharged, ambient atmos but can not enter the second tightness system in fermentor tank housing 1, second tightness system is connected with the second control valve 42, and the sediment in fermentor tank housing 1 is by discharging outside fermentor tank housing 1 after sediment slag-drip opening 13, second tightness system, the second control valve 42; The temperature that can regulate natural pond liquid 10 is also provided with and the heat exchange whipping appts of stirring and evenly mixing natural pond liquid 10 in fermentor tank housing 1, described heat exchange whipping appts is arranged in the active coating of the natural pond liquid 10 be in stratification state, outside fermentor tank housing 1, be also provided with the drive unit driving heat exchange whipping appts to stir natural pond liquid, heat exchange whipping appts can will be in the active coating of the natural pond liquid 10 of stratification state, supernatant layer and scum layer mixing under the driving of drive unit; Whipping appts is arranged at the active coating of natural pond liquid 10, the active coating of natural pond liquid 10, supernatant layer and scum layer can mix by such whipping appts in whipping process, can not be stirred to sediment layer again, thus are conducive to collection and the discharge of sediment.
In the present embodiment, as shown in Figure 1, the structure of the first described tightness system comprises: hopper 31, the discharge port of the lower end of hopper 31 is connected with natural pond liquid opening for feed 12, part natural pond liquid in fermentor tank housing 1 is spilled over to hopper 31 to be formed from natural pond liquid opening for feed 12 and can stops that outside air enters the water-lute in biogas fermentation tank shell 1, and the upper surface 311 of the opening for feed of hopper 31 upper end is higher than the liquid level being spilled over to the natural pond liquid in hopper 31 from natural pond liquid opening for feed 12.The structure of the second described tightness system comprises: discharge pipe 32, the opening for feed of discharge pipe 32 lower end is connected with sediment slag-drip opening 13, the discharge port of discharge pipe 32 upper end sidewall is connected with the second control valve 42, part natural pond liquid in fermentor tank housing 1 is spilled over to discharge pipe 32 to be formed from sediment layer slag-drip opening 13 and can stops that outside air enters the water-lute in biogas fermentation tank shell 1, the upper surface 321 of discharge pipe 32 is higher than the liquid level of natural pond liquid 10 in fermentor tank housing 1, sediment can in fermentor tank housing 1 gaseous tension of natural pond liquid 10 and biogas effect under extrude from discharge pipe 32.
As Fig. 1, shown in Fig. 2 and Fig. 3, the structure of the heat exchange whipping appts described in the present embodiment comprises: rotation center pipe 2, rotation center pipe 2 is by being arranged at rolling bearing 53 lateral support on the tank skin of fermentor tank housing 1 both sides in fermentor tank housing 1, and rotation center pipe 2 two ends are stretched out outside fermentor tank housing 1 from the through hole the tank skin of fermentor tank housing 1 both sides respectively, also be respectively arranged with between through hole on rotation center pipe 2 and fermentor tank housing 1 both sides tank skin and prevent natural pond liquid from the gap between the through hole rotation center pipe 2 and fermentor tank housing 1 both sides tank skin to the 3rd tightness system of outward leakage, sealing member is provided with in rotation center pipe 2, the sealing member adopted in the present embodiment is blind plate 51, blind plate 51 is arranged in the middle part of rotation center pipe 2, rotation center pipe 2 is separated into mutual disconnected water inlet rotation center pipe 21 and water outlet rotation center pipe 22 by blind plate 51, the water inlet rotation center pipe 21 stretched out outside fermentor tank housing 1 is connected with water inlet pipe 81 by the first swivel joint 71, and the water outlet rotation center pipe 22 stretched out outside fermentor tank housing 1 is connected with rising pipe 82 by the second swivel joint 72, rotation center pipe 2 is also provided with at least one group of heat transfer tube 6, be described to arrange one group of heat transfer tube 6 on rotation center pipe 2 in the present embodiment, in actual use, according to the shape of fermentor tank housing 1 and size and natural pond liquid 10 energy requirements, many group heat transfer tubes 6 can be increased to increase the heat interchanging area of heat transfer tube 6 and natural pond liquid 10.The water-in often organizing heat transfer tube 6 is all connected with water inlet rotation center pipe 21, the water outlet often organizing heat transfer tube 6 is all connected with water outlet rotation center pipe 22, the current of the band certain temperature entered from water inlet pipe 81 enter each group of heat transfer tube 6 by the first swivel joint 71, water inlet rotation center pipe 21, by water outlet rotation center pipe 22, second swivel joint 72 and rising pipe 82 export fermentor tank housing 1 outside after carrying out indirect heat exchange with the natural pond liquid outside each group of heat transfer tube 6; In actual use, the temperature of current in input each group of heat transfer tube 6 is selected according to the actual temperature of natural pond liquid 10 in marsh-gas fermentation tank 1, realize the cooling to natural pond liquid 10 or heating, again input in each group of heat transfer tube 6 from water inlet pipe 81 after the current exported from rising pipe 82 can being lowered the temperature again or heat in addition, form a complete water cycle.Rotation center pipe 2 can be driven to rotate at the drive unit 9 of fermentor tank housing 1 arranged outside, thus drive each group of heat transfer tube 6 to rotate, and then the active coating of natural pond liquid, supernatant layer and scum layer are mixed.
As depicted in figs. 1 and 2, the 3rd tightness system described in the present embodiment is mechanical seal ring 54, and mechanical seal ring 54 is arranged between the through hole on the tank skin of water outlet rotation center pipe 22 and fermentor tank housing 1 and between the through hole of intaking on the tank skin of rotation center pipe 21 and fermentor tank housing 1 respectively.
As shown in Figure 3, often organize heat transfer tube 6 in the present embodiment to form by two circulating picture-changing heat pipes, each circulating picture-changing heat pipe includes the inlet channel 61 be communicated with rotation center pipe 21 of intaking, the outlet conduit 62 be communicated with water outlet rotation center pipe 22 and the circulating line 63 being connected inlet channel 61 and outlet conduit 62, described circulating line 63 is connected and composed by the U-shaped pipe head and the tail of some arranged transverselys, inlet channel 61, circulating line 63 and outlet conduit 62 formation are positioned at conplane circulating picture-changing heat pipe, two circulating picture-changing heat pipes are symmetricly set in the both sides of rotation center pipe 2, and two symmetrically arranged circulating picture-changing heat pipes and rotation center pipe 2 are positioned at same plane.Between each group of heat transfer tube 6 and rotation center pipe 2, some fixed discs 52 are also fixedly installed in the present embodiment, fixed disc 52 is for supporting each group of heat transfer tube 6, consolidate the strength of joint between each group of heat transfer tube 6 and rotation center pipe 2, make each group of heat transfer tube 6 and rotation center pipe 2 still keep good switching performance in rotation process.
As shown in Figure 2, drive unit described in the present embodiment comprises: drive-motor 9, the output terminal of drive-motor 9 is connected with transmission mechanism by step-down gear 91, the output terminal of transmission mechanism is connected with water inlet rotation center pipe 21, in actual use, the output terminal of transmission mechanism also can be connected with water outlet rotation center pipe 22, drive-motor 9 can drive rotation center pipe 2 to rotate by step-down gear 91, transmission mechanism, thus drives each group of heat transfer tube 6 active coating of natural pond liquid 10, supernatant layer and scum layer to be mixed.Transmission mechanism described in the present embodiment is chain drive, chaindriven drive sprocket 92 is connected with the output terminal of step-down gear 91, chaindriven driven sprocket 93 is connected with water inlet rotation center pipe 21, also can adopt other forms of transmission mechanism in actual use, as V belt translation etc.
The operational process of marsh-gas fermentation tank described in the utility model is as follows: close the second control valve 42, open the first control valve 41, the organism being mixed with water is dropped into fermentor tank housing from hopper 31 and forms natural pond liquid 10, in fermentor tank housing 1, the holding temperature of natural pond liquid 10 is generally arranged between 30-40 DEG C, if the temperature of natural pond liquid 10 is higher than holding temperature, the water flow temperature then passed in each group of heat transfer tube 6 lower than the temperature of natural pond liquid 10, need carry out cooling to natural pond liquid 10 and makes anaerobically fermenting temperature control within the scope of holding temperature; If the temperature of natural pond liquid 10 is lower than holding temperature, then the water flow temperature passed in each group of heat transfer tube 6 higher than the temperature of natural pond liquid 10, need carry out heating to natural pond liquid 10 and anaerobically fermenting temperature is controlled within the scope of holding temperature.The water flow temperature passed in each group of heat transfer tube 6 is selected according to the actual temperature of natural pond liquid 10, water-flow equation is made respectively to organize heat transfer tube 6 and rotation center pipe 2, and keep current to pass in each group of heat transfer tube 6 endlessly, then drive unit is started, natural pond liquid 10 is stirred, while stirring, carry out indirect heat exchange by each group of heat transfer tube 6 and natural pond liquid 10, make the heating temperatures of natural pond liquid 10 or be cooled within the scope of holding temperature, thus make that anaerobically fermenting is stable to carry out.In actual production process, the air outlet of the second control valve 41 is connected with collecting methane tank, thus by the collecting methane of generation in fermentor tank housing 1 in collecting methane tank.After natural pond liquid 10 anaerobically fermenting in fermentor tank housing 1 runs for some time, the sediment in sediment layer is needed to discharge, first the first control valve 41 and drive unit are closed, then open the second control valve 42, the sediment making to be positioned at sediment layer can be discharged outside fermentor tank housing 1 by sediment slag-drip opening 13, discharge pipe 32, second tightness system, the second control valve 42 under the effect of the gaseous tension of natural pond liquid 10 and biogas.Sediment opens the first control valve 41 after discharging, close the second control valve 42, organism is dropped into fermentor tank housing 1 from hopper 31 and realizes supplementing charging operation, drive unit is restarted after charging, proceed to stir and heat exchange to natural pond liquid 10, make anaerobion in natural pond liquid 10 always within the scope of holding temperature with fermentation raw material---organism fully contacts, and then constantly carry out metabolism and generative propagation.With regard to needing, deslagging process and charging operation are carried out to the sediment in fermentor tank housing 1 after natural pond liquid 10 anaerobically fermenting for some time in fermentor tank housing 1, and the sediment produced after in time discharging anaerobically fermenting provide fermentation raw material for anaerobically fermenting supplements in time.
The utility model has the advantages that: one, the first tightness system and the second tightness system can prevent outside air from entering in fermentor tank housing 1, ensure anaerobion continuous metabolism and generative propagation under anaerobic environment always in fermentor tank housing 1; Two, can by the active coating of natural pond liquid 10, supernatant layer and scum layer stirring and evenly mixing when the heat exchange whipping appts be arranged in active coating works, in all natural ponds liquid 10 allowing the living environment of applicable anaerobion expand to above sediment layer, if heat exchange whipping appts is arranged in other layer of natural pond liquid 10, be difficult to obtain this technique effect, carry out stirring to natural pond liquid 10 simultaneously and can also promote being separated of biogas and natural pond liquid 10; Three, in addition heat transfer tube 6 can also carry out indirect heat exchange to natural pond liquid 10 while stirring natural pond liquid 10, and temperature distribution is homogeneous everywhere for the natural pond liquid 10 that so just can make in fermentor tank housing 1, effectively improves the heat transfer effect of heat transfer tube 6 and natural pond liquid 10; Four, in addition, heat transfer tube 6 is in relative movement state with natural pond liquid 10 in stirring heat transfer process always, thus not easily there is scale formation at the tube wall of heat transfer tube 6, so just ensure the heat transfer effect of heat transfer tube 6 and natural pond liquid 10, ensure the stability of anaerobically fermenting, thus substantially increase biogas production rate; Can organize heat transfer tube 6 to increase the heat interchanging area of heat transfer tube 6 and natural pond liquid 10 according to the shape of fermentor tank housing 1 and size and 10 the corresponding increases of energy requirement of natural pond liquid in actual use, the shape of fermentor tank housing 1 and size are substantially unrestricted more.
Claims (10)
1. marsh-gas fermentation tank, comprises airtight fermentor tank housing, and the tank skin of fermentor tank housing is respectively arranged with natural pond liquid opening for feed, sediment slag-drip opening and biogas venting port; It is characterized in that: described natural pond liquid opening for feed is arranged on the tank skin of the fermentor tank housing relative with the supernatant layer of natural pond liquid in fermentor tank housing, natural pond liquid opening for feed communicates with the supernatant layer of natural pond liquid in fermentor tank housing, be provided with at liquid opening for feed place, natural pond and can allow organism enters, gas but can not enter the first tightness system in fermentor tank housing, organism is by entering in fermentor tank housing after the first tightness system, natural pond liquid opening for feed; Described biogas venting port is arranged on the tank skin of the fermentor tank housing of natural pond liquid ullage, and biogas exhaust ports is provided with the first control valve, and the biogas in fermentor tank housing is by discharging outside fermentor tank housing after biogas venting port, the first control valve; Described sediment slag-drip opening is arranged on the tank skin of the fermentor tank housing relative with the sediment layer of natural pond liquid in fermentor tank housing, sediment slag-drip opening communicates with the sediment layer of natural pond liquid in fermentor tank housing, be provided with at sediment slag-drip opening place and can allow the sediment in fermentor tank housing is discharged, ambient atmos but can not enter the second tightness system in fermentor tank housing, second tightness system is connected with the second control valve, and the sediment in fermentor tank housing is by discharging outside fermentor tank housing after sediment slag-drip opening, the second tightness system, the second control valve; Also be provided with in fermentor tank housing and can regulate natural pond liquid temp and the heat exchange whipping appts of stirring and evenly mixing natural pond liquid, described heat exchange whipping appts is arranged in the active coating of the natural pond liquid be in stratification state, also be provided with the drive unit driving heat exchange whipping appts to stir natural pond liquid in fermentor tank hull outside, the active coating of natural pond liquid, supernatant layer and scum layer can mix by heat exchange whipping appts under the driving of drive unit.
2. according to marsh-gas fermentation tank according to claim 1, it is characterized in that: the structure of the first described tightness system comprises: hopper, the discharge port of hopper lower end is connected with natural pond liquid opening for feed, part natural pond liquid in fermentor tank housing is spilled over to hopper to be formed from natural pond liquid opening for feed and can stops that outside air enters the water-lute in biogas fermentation tank shell, and the upper surface of the opening for feed of hopper upper end is higher than the liquid level of natural pond liquid in hopper.
3. according to the marsh-gas fermentation tank described in claim 1 or 2, it is characterized in that: the structure of the second described tightness system comprises: discharge pipe, the opening for feed of discharge pipe lower end is connected with sediment slag-drip opening, the discharge port of discharge pipe upper end sidewall is connected with the second control valve, part natural pond liquid in fermentor tank housing is spilled over to discharge pipe to be formed from sediment layer slag-drip opening and can stops that outside air enters the water-lute in biogas fermentation tank shell, the upper surface of discharge pipe is higher than the liquid level of natural pond liquid in fermentor tank housing, sediment can in fermentor tank housing the gaseous tension of natural pond liquid and biogas effect under extrude from discharge pipe.
4. according to marsh-gas fermentation tank according to claim 1, it is characterized in that: the structure of described heat exchange whipping appts comprises: rotation center pipe, rotation center pipe is by being arranged at rolling bearing lateral support on the tank skin of fermentor tank housing both sides in fermentor tank housing, and rotation center pipe two ends are stretched out outside fermentor tank housing from the through hole the tank skin of fermentor tank housing both sides respectively, the 3rd tightness system preventing natural pond liquid from outwards releasing from the gap between the through hole rotation center pipe and fermentor tank housing both sides tank skin is also respectively arranged with between through hole on rotation center pipe and fermentor tank housing both sides tank skin, sealing member is provided with in rotation center pipe, rotation center pipe is separated into mutual disconnected water inlet rotation center pipe and water outlet rotation center pipe by sealing member, the water inlet rotation center pipe stretched out outside fermentor tank housing is connected with water inlet pipe by the first swivel joint, and the water outlet rotation center pipe stretched out outside fermentor tank housing is connected with rising pipe by the second swivel joint, rotation center pipe is also provided with at least one group of heat transfer tube, the water-in often organizing heat transfer tube is all connected with water inlet rotation center pipe, the water outlet often organizing heat transfer tube is all connected with water outlet rotation center pipe, the current of the band certain temperature entered from water inlet pipe enter each group of heat transfer tube by the first swivel joint, water inlet rotation center pipe, by water outlet rotation center pipe, second swivel joint and rising pipe export fermentor tank housing outside after carrying out indirect heat exchange with the natural pond liquid outside each group of heat transfer tube, described drive unit can drive rotation center pipe to rotate, thus drives each group of heat transfer tube to rotate, and then the active coating of natural pond liquid, supernatant layer and scum layer is mixed.
5. according to marsh-gas fermentation tank according to claim 4, it is characterized in that: the 3rd described tightness system is mechanical seal ring, and mechanical seal ring is arranged between the through hole on the tank skin of water outlet rotation center pipe and fermentor tank housing and between the through hole of intaking on the tank skin of rotation center pipe and fermentor tank housing respectively.
6. according to marsh-gas fermentation tank according to claim 4, it is characterized in that: described sealing member is be arranged at the blind plate in the middle part of rotation center pipe, rotation center pipe is separated into mutual disconnected water inlet rotation center pipe and water outlet rotation center pipe by blind plate.
7. according to claim 4, marsh-gas fermentation tank described in 5 or 6, it is characterized in that: often organize heat transfer tube and form by two circulating picture-changing heat pipes, each circulating picture-changing heat pipe includes the inlet channel be communicated with rotation center pipe of intaking, the outlet conduit be communicated with water outlet rotation center pipe and the circulating line being connected inlet channel and outlet conduit, described circulating line is connected and composed by the U-shaped pipe head and the tail of some arranged transverselys, inlet channel, circulating line and outlet conduit formation are positioned at conplane circulating picture-changing heat pipe, two circulating picture-changing heat pipes are symmetricly set in rotation center pipe both sides, and two symmetrically arranged circulating picture-changing heat pipes and rotation center pipe are positioned at same plane.
8. according to marsh-gas fermentation tank according to claim 7, it is characterized in that: between each group of heat transfer tube and rotation center pipe, be also fixedly installed some fixed discs.
9. according to the marsh-gas fermentation tank described in claim 4,5 or 6, it is characterized in that: described drive unit comprises: drive-motor, the output terminal of drive-motor is connected with transmission mechanism by step-down gear, the output terminal of transmission mechanism is connected with water inlet rotation center pipe or water outlet rotation center pipe, drive-motor can drive rotation center pipe to rotate by step-down gear, transmission mechanism, thus drives each group of heat transfer tube the active coating of natural pond liquid, supernatant layer and scum layer to be mixed.
10. according to marsh-gas fermentation tank according to claim 9, it is characterized in that: described transmission mechanism is chain drive, chaindriven drive sprocket is connected with the output terminal of step-down gear, and chaindriven driven sprocket is connected with water inlet rotation center pipe or water outlet rotation center pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292054.XU CN204779595U (en) | 2015-05-08 | 2015-05-08 | Ferment tank for marsh gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292054.XU CN204779595U (en) | 2015-05-08 | 2015-05-08 | Ferment tank for marsh gas |
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| CN204779595U true CN204779595U (en) | 2015-11-18 |
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| CN201520292054.XU Expired - Fee Related CN204779595U (en) | 2015-05-08 | 2015-05-08 | Ferment tank for marsh gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877902A (en) * | 2015-05-08 | 2015-09-02 | 张家港市天源机械制造有限公司 | Biogas fermentation tank |
| CN107418877A (en) * | 2017-09-20 | 2017-12-01 | 南京通用电气装备有限公司 | A kind of Novel anaerobic fermentation tank and up-flow full-mixing type anaerobic fermentation system |
-
2015
- 2015-05-08 CN CN201520292054.XU patent/CN204779595U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877902A (en) * | 2015-05-08 | 2015-09-02 | 张家港市天源机械制造有限公司 | Biogas fermentation tank |
| CN104877902B (en) * | 2015-05-08 | 2017-09-12 | 张家港市天源机械制造有限公司 | Marsh-gas fermentation tank |
| CN107418877A (en) * | 2017-09-20 | 2017-12-01 | 南京通用电气装备有限公司 | A kind of Novel anaerobic fermentation tank and up-flow full-mixing type anaerobic fermentation system |
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