CN112010426B - Vertical anaerobic reactor - Google Patents
Vertical anaerobic reactor Download PDFInfo
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- CN112010426B CN112010426B CN202010856545.8A CN202010856545A CN112010426B CN 112010426 B CN112010426 B CN 112010426B CN 202010856545 A CN202010856545 A CN 202010856545A CN 112010426 B CN112010426 B CN 112010426B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/4094—Plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/305—Treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
Abstract
The invention discloses a novel vertical anaerobic reactor, which comprises a tank body, a material circulating stirring assembly and a methane separator, wherein the material circulating stirring assembly and the methane separator are arranged in the tank body; the material circulating and stirring assembly comprises a heating reaction pipe, the heating reaction pipe divides a material reaction area in the tank body into a first circulating reaction chamber and a second circulating reaction chamber, and a high-pressure methane buffer tank on one side of the tank body sprays methane to the upper part of the heating reaction pipe through a first methane discharge pipe to enable the material to form longitudinal circulation in the tank body; the methane separator comprises a separator shell, and a drainage sleeve is fixed in the separator shell; meanwhile, the bottom of the drainage sleeve is provided with a drainage pipe; one side of the tank body is also provided with a circulating pump, and the circulating pump conveys the materials in the material reaction area into the separator shell; the bottom of the separator shell is also provided with a sludge discharge pipe used for conveying sludge into the tank body. The vertical anaerobic reactor can fully stir and mix materials in the tank, and discharge of biogas residues and backflow of sludge are realized.
Description
Technical Field
The invention relates to anaerobic treatment equipment for household garbage, in particular to a novel vertical anaerobic reactor.
Background
The kitchen (kitchen waste) contains more than 80% of water, the liquid phase after pretreatment has the characteristics of high COD, high salt, high SS and the like, and the phenomena of sludge loss, fatty acid calcium accumulation, even acidification and the like can occur in the operation of the conventional anaerobic reactor, including UASB, CSTR and the like. Meanwhile, the gas production efficiency is continuously reduced along with the time. The COD degradation efficiency is gradually reduced. This is related to the reduction of the sludge load caused by the loss of anaerobic sludge, the poor mass transfer effect caused by the uneven stirring, and the reduction of the effective space caused by the failure to remove inert substances, scum and the like in time.
Chinese patent application publication No. CN101823793A discloses an anaerobic reactor, specifically a two-way circulation fully-mixed anaerobic reactor, which mainly comprises: the device comprises a reactor main body, a feeding device, a circulating stirring device, a sewage discharge device, a safety protection device, a water outlet device, a heating device, a detection control device, a methane collection device and the like. The double-path circulation full-mixing type anaerobic reactor is provided with an internal circulation stirring device and an external circulation stirring device; the two sets of circulating stirring devices are combined to stir materials, the internal circulating stirring is mainly used, the external circulating stirring is used as an auxiliary, sludge can be effectively intercepted, the yield is high, the operating cost is obviously reduced, the effluent quality is obviously improved, and the like. However, the following disadvantages still exist:
1. the materials under the anaerobic reactor are easy to be deposited and not to be removed, and the materials above the anaerobic reactor are easy to float and not to come down, so that the materials are easy to be layered, and the requirement of homogenizing the materials cannot be met;
2. the anaerobic reactor can not complete the homogenization and mixing of anaerobic sludge and materials, and materials containing light substances are easily enriched at the top end of the tank body under the action of buoyancy and the gas stripping of methane.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a novel vertical anaerobic reactor which can fully stir and mix materials in a tank and realize the discharge of biogas residues and the backflow of sludge.
In order to achieve the purpose, the invention provides the following technical scheme: the novel vertical anaerobic reactor comprises a tank body, a material circulating stirring assembly and a methane separator, wherein the material circulating stirring assembly and the methane separator are arranged in the tank body, and the methane separator is positioned above the material circulating stirring assembly; the tank body is provided with a feed pipe, and the top of the tank body is provided with a methane discharge pipe;
the material circulating and stirring assembly comprises a heating reaction pipe, the heating reaction pipe divides a material reaction area in the tank body into a first circulating reaction chamber and a second circulating reaction chamber, the first circulating reaction chamber is formed by the chamber in the heating reaction pipe, and the second circulating reaction chamber is formed between the heating reaction pipe and the tank body; meanwhile, a closed interlayer is formed on the pipe wall of the heating reaction pipe, a steam chamber is formed inside the interlayer, and steam is introduced into the steam chamber of the interlayer, so that the materials in the tank body can be heated;
a high-pressure methane buffer tank is arranged on one side of the tank body, the high-pressure methane buffer tank is communicated with the tank body through a first methane discharge pipe, the first methane discharge pipe penetrates through the wall of the tank body and the wall of the heating reaction pipe and extends into the heating reaction pipe, and the outlet end of the first methane discharge pipe sprays methane to the upper part of the heating reaction pipe; the materials move upwards in a first circulating reaction chamber of the heating reaction tube under the action of steam stripping and enter a second circulating reaction chamber between the heating reaction tube and the tank body; the materials move downwards in the second circulating reaction chamber and enter the first circulating reaction chamber of the heating reaction pipe again at the bottom of the tank body, so that the materials form longitudinal circulation in the tank body;
the biogas separator comprises a separator shell with an opening formed at the top, and a drainage sleeve is fixed in the separator shell; meanwhile, a drain pipe is arranged at the bottom of the drain sleeve and penetrates through the tank wall of the tank body to extend out of the tank body; a circulating pump is further arranged on one side of the tank body, a feed inlet of the circulating pump is communicated with the interior of the tank body through a material taking circulating pipe, a discharge outlet of the circulating pump is communicated with the interior of the tank body through a first feeding circulating pipe, and one end, positioned on the tank body, of the first feeding circulating pipe penetrates through the tank wall of the tank body and extends into the separator shell;
the bottom of the separator shell is also provided with a sludge discharge pipe which penetrates through the tank wall of the tank body and extends out of the tank body; meanwhile, the sludge discharge pipe further extends and penetrates through the wall of the tank body to extend into the tank body; the sludge discharge pipe is provided with a first valve at the position outside the tank body.
The interior of the anaerobic reactor does not contain any rotating parts, so that the embarrassment that the similar tank body is required to be cleaned to maintain when mechanical faults occur in the operation is reduced; meanwhile, the full mixing of the materials can be realized by means of methane stripping and circumferential stirring without dead angles; in addition, the separation of materials can be realized through the methane separator, suspended matters can be removed, the methane can also realize certain gas-liquid separation, and the material reflux through the methane separator ensures that the sludge with higher concentration is stored in the tank body; thereby achieving SRT > HRT
The reactor becomes an EGSB-like high-efficiency anaerobic reactor, and the organic load can reach 6 to 8kgCOD/m3D; the removal efficiency of COD reaches more than 90 percent; the hydraulic retention time can be reduced, and compared with processes such as a CSTR and the like, the volume of the tank body can be reduced, so that the construction cost is reduced.
Preferably, a plurality of circulating sleeves are further arranged in the second circulating reaction chamber, the circulating sleeves are U-shaped, and height differences are formed at two ends of each circulating sleeve in the longitudinal direction, wherein a material feeding hole is formed at one end of each circulating sleeve, a material discharging hole is formed at the other end of each circulating sleeve, and the height of the material feeding hole of each circulating sleeve is larger than that of the material discharging hole of each circulating sleeve; and the high-pressure methane buffer tank is also provided with a plurality of second methane discharge pipes, and the second methane discharge pipes penetrate through the tank wall of the tank body and the pipe wall of the circulating sleeve and extend into the circulating sleeve.
Preferably, the height of the material feeding hole of the circulating sleeve is greater than that of the top of the heating reaction tube; and the material discharge hole of the circulating sleeve is lower than the height of the top of the heating reaction tube; one end of the second methane discharge pipe, which extends into the circulating sleeve, is arranged in the pipe section of the material discharge port, and the gas outlet end of the second methane discharge pipe sprays methane to the upper part of the circulating sleeve. The circulating sleeve comprises a first sleeve arranged in the vertical direction, the bottom of the first sleeve is bent upwards to form a second sleeve, a material feeding hole is formed in the top end of the first sleeve, a material discharging pipe is formed in the top of the second sleeve, and one end, extending into the circulating sleeve, of the second biogas discharging pipe is arranged in the second sleeve.
Preferably, the first biogas discharge pipe extends into the heating reaction pipe along the tangential direction of the pipe wall of the heating reaction pipe, and the outlet end of the first biogas discharge pipe is arranged obliquely upwards.
Preferably, the discharge sleeve is further sleeved with a sludge flow blocking sleeve, a gap is reserved between the bottom of the sludge flow blocking sleeve and the bottom of the reactor shell, and the size of the top of the sludge flow blocking sleeve is larger than that of the bottom of the sludge flow blocking sleeve.
Preferably, the upper part of the separator shell is also provided with a first light slag discharge pipe, and the first light slag discharge pipe penetrates through the wall of the tank body and extends out of the tank body.
Preferably, a second light slag discharge pipe is further arranged at the upper part of the material reaction area on the tank body, and the second light slag discharge pipe penetrates through the wall of the tank body and extends out of the tank body.
Preferably, the high-pressure methane buffer tank is further provided with a third methane discharge pipe, the third methane discharge pipe penetrates through the wall of the tank body and extends into the tank body, and one end of the third methane discharge pipe, which is positioned on the tank body, is arranged right below the heating reaction pipe.
Preferably, the bottom of the tank body is also provided with a heavy slag discharge pipe.
Preferably, the bottom of the tank body is in an inverted cone shape; the top of the tank body is conical; the bottom of the separator shell is in an inverted cone shape.
In conclusion, the invention has the following beneficial effects:
1. the interior of the anaerobic reactor does not contain any rotating parts, so that the embarrassment that the similar tank body is required to be cleaned to maintain when mechanical faults occur in the operation is reduced;
2. the anaerobic reactor can achieve the full mixing of materials without dead angles by means of gas stripping and circumferential stirring of methane;
3. the anaerobic reactor achieves the separation of materials through a biogas liquid separator, suspended matters can be removed, and biogas can achieve certain gas-liquid separation;
4. the anaerobic reactor leads the sludge with higher concentration to be stored in the tank body through the material reflux of the methane separator; thereby achieving SRT>HRT to become an EGSB-like high-efficiency anaerobic reactor, and the organic load can reach 6 to 8kgCOD/m3D; the removal efficiency of COD reaches more than 90 percent; the hydraulic retention time can be reduced, and compared with processes such as a CSTR and the like, the volume of the tank body can be reduced, so that the construction cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Reference numerals: 1. a tank body; 2. a first bracket; 3. a feed pipe; 4. a biogas discharge pipe; 5. heating the reaction tube; 6. a second bracket; 7. a steam discharge pipe; 8. a steam discharge pipe; 9. a high pressure methane buffer tank; 10. A first biogas discharge pipe; 11. a separator housing; 12. a drainage sleeve; 13. a drain pipe; 14. a sludge flow blocking sleeve; 15. a circulation pump; 16. a material taking circulating pipe; 17. a first feed circulation tube; 18. a sludge discharge pipe; 19. circulating a ring pipe; 20. a second biogas discharge pipe; 21. a first sleeve; 22. a second sleeve; 23. A third biogas discharge pipe; 25. a heavy slag discharge pipe; 26. a first light slag discharge pipe; 27. a second light slag discharge pipe; 28. a first support bar.
Detailed Description
The invention is further described with reference to the accompanying drawings.
The embodiment discloses a novel vertical anaerobic reactor, which comprises a tank body 1, a material circulating stirring assembly and a methane separator, wherein the material circulating stirring assembly and the methane separator are arranged in the tank body 1, the methane separator is positioned above the material circulating stirring assembly, and the methane separator is fixed in the tank body 1 through a first support 2 and positioned at the upper part of the tank body 1; wherein, the bottom of the tank body 1 is in an inverted cone shape; the top of the tank body 1 is also conical, the bottom of the tank body 1 is inverted conical, which is beneficial to the accumulation of heavy substances, and the top of the tank body 1 is conical, which is beneficial to the accumulation of steam; the tank body 1 is provided with a feeding pipe 3, and the top of the tank body 1 is also provided with a methane discharging pipe 4; the materials enter the tank body 1 through the feeding pipe 3, the liquid level of the materials is higher than that of the material circulating stirring assembly and lower than that of the methane separator, a material reaction area is formed in the area below the material liquid level in the tank body 1, and the materials are subjected to anaerobic fermentation in the area to generate methane; meanwhile, a biogas area is formed between the material circulating stirring assembly and the biogas separator.
The material circulating and stirring assembly comprises a heating reaction tube 5, the heating reaction tube 5 is fixed in the tank body 1 through a second support 6 and is positioned at the middle lower part of the tank body 1, wherein the second support 6 is a plurality of third support rods which are longitudinally arranged, the bottoms of the third support rods are fixedly connected with the tank body 1, and the upper parts of the third support rods are fixedly connected with the heating reaction tube 5; the heating reaction tube 5 divides the material reaction area in the tank body 1 into a first circulation reaction chamber and a second circulation reaction chamber, the first circulation reaction chamber is formed in the chamber in the heating reaction tube 5, and the second circulation reaction chamber is formed between the heating reaction tube 5 and the tank body 1; meanwhile, a heating device for heating the material is also arranged in the tank body 1, and the heating device can be a heating coil; or, heating device forms inclosed intermediate layer including the pipe wall of heating reaction tube 5, interbedded inside forms the steam cavity, let in steam in interbedded steam cavity, be connected with the steam admission pipe 7 and the steam discharge pipe 8 with interbedded steam cavity intercommunication on the heating reaction tube 5 promptly, steam is discharged into in the steam cavity of the pipe wall that the pipe 7 got into heating reaction tube 5 gets into through steam, then through steam discharge, so, can realize the heating to the pipe wall of heating reaction tube 5, and then can be to the heating of the interior material of jar body 1. Compared with the traditional heating mode of the tubular coil, the heating surface of the heating reaction tube 5 in a steam heating mode is larger, and the tubular coil is easy to scale.
A high-pressure methane buffer tank 9 is arranged on one side of the tank body 1, the high-pressure methane buffer tank 9 is communicated with the tank body 1 through a first methane discharge pipe 10, the first methane discharge pipe 10 penetrates through the tank wall of the tank body 1 and the pipe wall of the heating reaction pipe 5 and extends into the heating reaction pipe 5, and the outlet end of the first methane discharge pipe 10 sprays methane to the upper part of the heating reaction pipe 5; the materials move upwards in the first circulating reaction chamber of the heating reaction tube 5 under the action of steam stripping and enter the second circulating reaction chamber between the heating reaction tube 5 and the tank body 1; the materials move downwards in the second circulating reaction chamber and enter the first circulating reaction chamber of the heating reaction pipe 5 again at the bottom of the tank body 1, so that the materials form longitudinal circulation in the tank body 1. Wherein, the first biogas discharge pipe 10 is provided with a first valve which controls the opening and closing of the first biogas discharge pipe 10.
The biogas separator comprises a separator shell 11 with an opening formed at the top, a drainage sleeve 12 is fixed in the separator shell 11, a water inlet at the top end of the drainage sleeve 12 is positioned at the middle upper part of the separator shell 11, and the bottom of the separator shell 11 is in an inverted cone shape, so that sludge is convenient to gather at the central position of the bottom of the separator shell 11; meanwhile, the bottom of the drainage sleeve 12 is provided with a drainage pipe 13, the drainage pipe 13 penetrates through the wall of the tank body 1 and extends out of the tank body 1, preferably, the drainage sleeve is further sleeved with a sludge flow blocking sleeve 14, a gap is reserved between the bottom of the sludge flow blocking sleeve 14 and the bottom of the reactor shell 11, so that materials entering the separator shell can penetrate through the gap from the bottom of the separator and enter the sludge flow blocking sleeve, and the size of the top of the sludge flow blocking sleeve 14 is larger than that of the bottom of the sludge flow blocking sleeve; a circulating pump 15 is further arranged on one side of the tank body 1, a feed inlet of the circulating pump 15 is communicated with the inside of the tank body 1 through a material taking and circulating pipe 16, a discharge outlet of the circulating pump 15 is communicated with the inside of the tank body 1 through a first feeding and circulating pipe 17, and one end, positioned on the tank body 1, of the first feeding and circulating pipe 17 penetrates through the tank wall of the tank body 1 and extends into the separator shell 11; the bottom of the separator shell 11 is also provided with a sludge discharge pipe 18, and the sludge discharge pipe 18 penetrates through the tank wall of the tank body 1 and extends out of the tank body 1; meanwhile, the sludge discharge pipe 18 further extends and penetrates through the wall of the tank body 1 to extend into the tank body 1; a fourth valve is installed at a position outside the tank body 1 on the sludge discharge pipe 18. Preferably, the bottom of the separator housing 11 is further provided with a plurality of first supporting rods 28, one end of each first supporting rod 28 is fixedly connected with the separator housing 11, and the other end of each first supporting rod 28 is fixed on the first bracket 2. Wherein, the first support 2 is a plurality of second bracing pieces that vertically set up, and the bottom and the jar body 1 fixed connection of second bracing piece, the upper portion and the marsh gas liquid separator fixed connection of first bracing piece.
The materials enter the tank body 1 through the feeding pipe 3, and the liquid level of the materials is higher than the material circulating stirring assembly and lower than the methane separator; the area below the liquid level in the tank body 1 forms a material reaction area, materials are subjected to anaerobic fermentation in the area to generate biogas, the biogas is conveyed to a biogas cabinet through a biogas discharge pipe 4 to be stored, and part of the biogas is conveyed into a high-pressure biogas buffer tank after being pressurized by a biogas booster fan.
The high-pressure methane buffer tank 9 is used for introducing steam into the heating reaction tube 5 through a first methane discharge tube 10; the materials move upwards in the first circulating reaction chamber of the heating reaction tube 5 and enter the second circulating reaction chamber under the action of steam stripping, negative pressure is formed at the bottom of the first circulating reaction chamber, so that the materials at the bottom of the second circulating reaction chamber enter the first circulating reaction chamber, the materials at the upper part of the second circulating reaction chamber move downwards under the action of gravity and enter the first circulating reaction chamber of the heating reaction tube 5 again at the bottom of the tank body 1, and then the materials form longitudinal circulation in the tank body 1; thereby achieving the purpose of fully mixing the materials and the sludge and generating the methane by anaerobic fermentation. The biogas rises to the biogas liquid separator, and because the biogas liquid separator has a larger area, the biogas can flow upwards in a baffling effect at the bottom of the biogas liquid separator, so that the moisture in the biogas can be separated from the biogas, and the water vapor in the biogas can be separated to a certain extent; the subsequent treatment of the condensed water can also be reduced.
The circulating pump 15 conveys the biogas slurry in the material reaction zone into the separator shell 11 through the material circulating pipe and the first feeding circulating pipe 17, and the biogas slurry is kept still in the separator shell 11 for a certain time to form layering, namely the bottom is the heavier material, the middle is water, and the top layer is scum; water in the middle of the separator shell 11 is discharged out of the tank body 1 through a drainage sleeve 12 and a drainage pipe 13; the first valve is opened, so that the sludge at the bottom of the separator shell 11 can flow back into the tank body 1 through the sludge discharge pipe 18, the purpose of sludge backflow is achieved, and the sludge is guaranteed to be lost as little as possible. The first feeding circulating pipe 17 is also connected with a second feeding circulating pipe, one end of the second feeding circulating pipe, which is positioned at the tank body 1, is arranged at the middle part of the tank body 1, and the height of the second feeding circulating pipe is higher than the feeding hole of the circulating sleeve 19; the first feeding circulation pipe 17 is also connected with a third feeding circulation pipe, and one end of the third feeding circulation pipe, which is positioned on the tank body 1, penetrates through the side wall of the tank body 1 and enters the methane separator.
The interior of the anaerobic reactor does not contain any rotating parts, thereby reducing the dilemma that the similar tank body 1 has mechanical failure in operation and needs to be cleaned for maintenance; meanwhile, the full mixing of the materials can be realized without dead angles by means of methane stripping and circumferential stirring, and the layering phenomenon cannot occur; in addition, the separation of materials can be realized through the methane separator, suspended matters can be removed, the methane can also realize certain gas-liquid separation, and the material reflux through the methane separator ensures that the sludge with higher concentration is stored in the tank body 1; thereby achieving SRT > HRT and becoming an EGSB-like high-efficiency anaerobic reactor, and the organic load can reach 6-8 kgCOD/m 3/d; the removal efficiency of COD reaches more than 90 percent; the hydraulic retention time can be reduced, and compared with the processes such as the CSTR and the like, the volume of the tank body 1 can be reduced, so that the construction cost is reduced.
Preferably, a plurality of circulating sleeve pipes 19 are further arranged in the second circulating reaction chamber, the circulating sleeve pipes 19 are uniformly distributed along the circumferential direction of the tank body 1, the circulating sleeve pipes 19 are U-shaped, height differences are formed at two ends of each circulating sleeve pipe 19 in the longitudinal direction, a material feeding hole is formed at one end of each circulating sleeve pipe 19, a material discharging hole is formed at the other end of each circulating sleeve pipe 19, and the height of each material feeding hole of each circulating sleeve pipe 19 is larger than that of each material discharging hole of each circulating sleeve pipe 19; the high-pressure methane buffer tank 9 is also provided with a plurality of second methane discharge pipes 20, and the second methane discharge pipes 20 penetrate through the tank wall of the tank body 1 and the pipe wall of the circulating sleeve 19 and extend into the circulating sleeve 19. Specifically, circulation sleeve 19 includes the first sleeve pipe 21 that vertical direction set up, and the bottom of first sleeve pipe 21 is upwards bent and is formed second sleeve pipe 22, and the top of first sleeve pipe 21 forms the material feed inlet, and the top of second sleeve pipe 22 forms the material discharging pipe, lets in marsh gas at the one end of circulation sleeve pipe 19 and promotes the material upward movement, so, can promote the longitudinal circulation of jar body 1 inward flange material. Further, the height of the material feed port of the circulation casing 19 is larger than the height of the top of the heating reaction tube 5; and the material discharge hole of the circulating sleeve 19 is lower than the height of the top of the heating reaction tube 5; one end of the second biogas discharge pipe 20 extending into the circulating sleeve 19 is arranged in the pipe section of the material discharge port, that is, one end of the second biogas discharge pipe 20 extending into the circulating sleeve 19 is arranged in the second sleeve 22, and the gas outlet end of the second biogas discharge pipe 20 sprays biogas above the circulating sleeve 19. In this way, the materials (including scum, etc.) at the top of the material reaction zone can enter the middle of the reaction zone through the circulating sleeve 19, and sufficient contact and reaction with the sludge can be achieved. Wherein, the second biogas discharge pipe 20 is provided with a second valve, and the second valve controls the opening and closing of the second biogas discharge pipe 20.
Further, a third biogas discharge pipe 23 is further arranged on the high-pressure biogas buffer tank 9, the third biogas discharge pipe 23 penetrates through the tank wall of the tank body 1 and extends into the tank body 1, and one end of the third biogas discharge pipe 23, which is positioned on the tank body 1, is arranged right below the heating reaction pipe 5. In this way, the longitudinal circulation of the material in the tank 1 can be promoted. Wherein, a third valve is arranged on the third biogas discharge pipe 23, and the third valve controls the opening and closing of the third biogas discharge pipe 23.
Meanwhile, the bottom of the tank body 1 is also provided with a heavy slag discharge pipe 25, when the materials in the tank body 1 react for a period of time, the valve is opened, and accumulated heavy slag at the pipe orifice of the heavy slag discharge pipe 25 can be discharged out of the tank body 1 through the hydraulic pressure of a high liquid level.
The material in the material reaction area is after reacting the certain time and separator casing 11 in the material all can form one deck dross after the certain time of stewing, in order to avoid the dross can not in time get rid of and lead to the effective space to reduce, this application all is equipped with light sediment delivery pipe on jar body 1 and separator casing 11, specific as follows:
the upper part of the separator shell 11 is also provided with a first light slag discharge pipe 26, and the first light slag discharge pipe 26 extends out of the tank body 1 through the tank wall of the tank body 1. After the materials in the tank body 1 react for a period of time, biogas slurry is conveyed to the inside of the separator shell 11 through the circulating pump 15, so that the liquid level in the separator shell 11 rises to the first light residue discharge pipe 26, and at the moment, scum can be discharged by opening the valve, wherein the scum comprises undigested grease, light calcium fatty acid and other indigestible suspended matters. A second light slag discharge pipe 27 is also arranged at the upper part of the tank body 1 in the material reaction area, and the second light slag discharge pipe 27 penetrates through the wall of the tank body 1 and extends out of the tank body 1. The tank body 1 is provided with a second light slag discharge pipe 27 which can remove the scum at the top of the material reaction area by a method of feeding and raising the liquid level through the feed pipe 3, thereby reducing the accumulation of the viscosity material at the top and facilitating the diffusion of methane. One side of the tank body 1 is also provided with a slag collecting tank, and scum formed in the separator shell 11 and scum formed in the reaction area of the tank body 1 are uniformly recycled into the slag collecting tank. The scum can be removed through the methane separator, meanwhile, the anaerobic sludge is reserved through natural layering, the content of the effluent SS is reduced, the retention time of the effective anaerobic sludge is greatly increased, the methane separator has certain functions of sedimentation and concentration, and the anaerobic sludge can be reserved in the anaerobic reactor.
In addition, the opening and closing of the first feed circulation pipe 17, the second feed circulation pipe, and the third feed circulation pipe may be performed by providing a switching valve at the discharge port end of the circulation pump 15; or, the fifth valve is installed on the first feeding circulation pipe 17, the sixth valve is installed on the second feeding circulation pipe, and the seventh valve is installed on the third feeding circulation pipe, so that the fifth valve, the sixth valve and the seventh valve can work independently without mutual interference.
In the present invention, it should be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and thus, should not be construed as limiting the present invention.
The directions given in the present embodiment are merely for convenience of describing positional relationships between the respective members and the relationship of fitting with each other. The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. Vertical anaerobic reactor, characterized by: the device comprises a tank body (1), a material circulating stirring assembly and a biogas separator, wherein the material circulating stirring assembly and the biogas separator are arranged in the tank body (1), and the biogas separator is positioned above the material circulating stirring assembly; a feed pipe (3) is arranged on the tank body (1), and a biogas discharge pipe (4) is arranged at the top of the tank body (1);
the material circulating and stirring assembly comprises a heating reaction tube (5), the heating reaction tube (5) divides a material reaction area in the tank body (1) into a first circulating reaction chamber and a second circulating reaction chamber, the first circulating reaction chamber is formed by the chamber in the heating reaction tube (5), and the second circulating reaction chamber is formed between the heating reaction tube (5) and the tank body (1); meanwhile, a closed interlayer is formed on the pipe wall of the heating reaction pipe (5), a steam chamber is formed inside the interlayer, and steam is introduced into the steam chamber of the interlayer, so that the material in the tank body (1) can be heated;
a high-pressure methane buffer tank (9) is arranged on one side of the tank body (1), the high-pressure methane buffer tank (9) is communicated with the tank body (1) through a first methane discharge pipe (10), the first methane discharge pipe (10) penetrates through the wall of the tank body (1) and the pipe wall of the heating reaction pipe (5) and extends into the heating reaction pipe (5), and the outlet end of the first methane discharge pipe (10) sprays methane to the upper part of the heating reaction pipe (5); the materials move upwards in a first circulating reaction chamber of the heating reaction tube (5) under the action of steam stripping and enter a second circulating reaction chamber between the heating reaction tube (5) and the tank body (1); the materials move downwards in the second circulating reaction chamber and enter the first circulating reaction chamber of the heating reaction pipe (5) again at the bottom of the tank body (1), so that the materials form longitudinal circulation in the tank body (1);
the biogas separator comprises a separator shell (11) with an opening formed at the top, and a drainage sleeve (12) is fixed in the separator shell (11); meanwhile, a drain pipe (13) is arranged at the bottom of the drain sleeve (12), and the drain pipe (13) penetrates through the wall of the tank body (1) and extends out of the tank body (1); a circulating pump (15) is further arranged on one side of the tank body (1), a feeding hole of the circulating pump (15) is communicated with the inside of the tank body (1) through a material taking circulating pipe (16), a discharging hole of the circulating pump (15) is communicated with the inside of the tank body (1) through a first feeding circulating pipe (17), and one end, located on the tank body (1), of the first feeding circulating pipe (17) penetrates through the tank wall of the tank body (1) and extends into the separator shell (11);
the bottom of the separator shell (11) is also provided with a sludge discharge pipe (18), and the sludge discharge pipe (18) penetrates through the wall of the tank body (1) and extends out of the tank body (1); meanwhile, the sludge discharge pipe (18) further extends and penetrates through the wall of the tank body (1) to extend into the tank body (1); a first valve is arranged on the sludge discharge pipe (18) and positioned outside the tank body (1);
a plurality of circulating sleeves (19) are further arranged in the second circulating reaction chamber, and height differences are formed at two ends of each circulating sleeve (19) in the longitudinal direction, wherein a material feeding hole is formed at one end of each circulating sleeve (19), a material discharging hole is formed at the other end of each circulating sleeve (19), and the height of the material feeding hole of each circulating sleeve (19) is larger than that of the material discharging hole of each circulating sleeve (19); the high-pressure methane buffer tank (9) is also provided with a plurality of second methane discharge pipes (20), and the second methane discharge pipes (20) penetrate through the tank wall of the tank body (1) and the pipe wall of the circulating sleeve (19) and extend into the circulating sleeve (19);
the circulating sleeve (19) is U-shaped, and the height of a material feeding hole of the circulating sleeve (19) is greater than that of the top of the heating reaction tube (5); the material discharge hole of the circulating sleeve (19) is lower than the height of the top of the heating reaction tube (5); one end of the second methane discharge pipe (20) extending into the circulating sleeve (19) is arranged in the pipe section of the material discharge port, and the gas outlet end of the second methane discharge pipe (20) sprays methane to the upper part of the circulating sleeve (19).
2. A vertical anaerobic reactor according to claim 1, wherein: the first biogas discharge pipe (10) extends into the heating reaction pipe (5) along the tangential direction of the pipe wall of the heating reaction pipe (5), and the outlet end of the first biogas discharge pipe (10) is obliquely and upwards arranged.
3. A vertical anaerobic reactor according to claim 1, wherein: the drainage sleeve (12) is further sleeved with a sludge flow blocking sleeve (14), a gap is reserved between the bottom of the sludge flow blocking sleeve (14) and the bottom of the separator shell (11), and the top size of the sludge flow blocking sleeve (14) is larger than the bottom size of the sludge flow blocking sleeve.
4. A vertical anaerobic reactor according to claim 1, wherein: the upper part of the separator shell (11) is also provided with a first light slag discharge pipe (26), and the first light slag discharge pipe (26) penetrates through the wall of the tank body (1) and extends out of the tank body (1).
5. A vertical anaerobic reactor according to claim 1, wherein: the upper portion of the tank body (1) in the material reaction area is further provided with a second light slag discharge pipe (27), and the second light slag discharge pipe (27) penetrates through the tank wall of the tank body (1) and extends out of the tank body (1).
6. A vertical anaerobic reactor according to claim 1, wherein: and a third biogas discharge pipe (23) is also arranged on the high-pressure biogas buffer tank (9), the third biogas discharge pipe (23) penetrates through the tank wall of the tank body (1) and extends into the tank body (1), and one end, positioned on the tank body (1), of the third biogas discharge pipe (23) is arranged right below the heating reaction pipe (5).
7. A vertical anaerobic reactor according to claim 1, wherein: the bottom of the tank body (1) is also provided with a heavy slag discharge pipe (25).
8. A vertical anaerobic reactor according to claim 1, wherein: the bottom of the tank body (1) is in an inverted cone shape; the top of the tank body (1) is conical; the bottom of the separator shell (11) is in an inverted cone shape.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1806323A1 (en) * | 2006-01-05 | 2007-07-11 | Biothane Systems International B.V. | Process and reactor for anaerobic waste water purification |
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| EP1205442A1 (en) * | 2000-11-08 | 2002-05-15 | VA TECH WABAG Deutschland GmbH & Co. KG | Process for the separation of gas, water and biomass and three-phase separation device |
| CN101823793A (en) * | 2010-04-28 | 2010-09-08 | 蒋勇 | Double-path circulation full-mixing type anaerobic reactor |
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