CN114891604A - Backheating quality recovery system applied to large-scale treatment of waste vegetables - Google Patents
Backheating quality recovery system applied to large-scale treatment of waste vegetables Download PDFInfo
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- 235000013311 vegetables Nutrition 0.000 title claims abstract description 35
- 239000002699 waste material Substances 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000000855 fermentation Methods 0.000 claims abstract description 32
- 230000007062 hydrolysis Effects 0.000 claims abstract description 32
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 32
- 239000010865 sewage Substances 0.000 claims abstract description 32
- 230000004151 fermentation Effects 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 238000005273 aeration Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 238000001704 evaporation Methods 0.000 claims abstract description 8
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims 3
- 230000008929 regeneration Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 244000144972 livestock Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 244000144977 poultry Species 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/18—External loop; Means for reintroduction of fermented biomass or liquid percolate
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/24—Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/02—Means for pre-treatment of biological substances by mechanical forces; Stirring; Trituration; Comminuting
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The system is applied to a heat-regenerative recycling system for large-scale treatment of the waste vegetables, and the discharged material of the anaerobic fermentation tank (4) is divided into two parts of biogas residues and biogas slurry after passing through a solid-liquid separation device (5); biogas slurry is sent to a three-way valve (7) through a sewage pump (6 a), a sewage pump (6 b) is installed behind the backflow end of the three-way valve (7), and the sewage pump (6 b) is connected with a mixing and stirring device (2); the liquid outlet end of the three-way valve (7) is connected with the aerobic tank (9); an aeration device (10) is arranged at the bottom of the aerobic tank (9); a replacing coil pipe (11) is erected on the inner side of the aerobic tank; the water outlet end of the heat exchanger is provided with a water pump (12), the water outlet pipe of the water pump is connected with the evaporation end of a water source heat pump (13), a hot water circulating pipeline between the water source heat pump (13) and the hydrolysis tank (3) and the fermentation tank (4) is composed of a heat pump water outlet pipeline, the hydrolysis tank (3) and an inner coil and an outer coil of the fermentation tank (4), and constant temperature difference variable flow control is adopted.
Description
Technical Field
The invention relates to a vegetable waste large-scale treatment technology, in particular to a biogas slurry reflux and waste heat recovery technology.
Background
The waste vegetable treatment system mainly based on constant-temperature anaerobic fermentation is generally adopted because the large-scale treatment and recycling of vegetable wastes can be realized, but the existing running large-scale waste vegetable treatment system generally has the problems of easy instability, high loss, low efficiency, insufficient treatment capacity and the like. Simple and effective adjustment of feeding physical property parameters and durable and stable energy supply to a system become the primary approaches for solving the problems.
The patent name of China invention is "a vegetables leftover bits processing system", application number is CN2016201324591, utility model discloses a vegetables leftover bits processing system, belongs to waste treatment technical field. The vegetable leftover material processing system consists of a material pool, a spiral material distributor, a crushing device, a pulp squeezing device, a conveying device and a material bin, can continuously process a large amount of vegetable leftover materials in a short time, and can finish processing the vegetable leftover materials before the vegetable leftover materials are not naturally fermented, become smelly and deteriorate, but has the defects that a plurality of high-power consumption devices are adopted, the vegetable leftover material processing system is not suitable for waste large-scale processing, and the economy is not high; neglecting the potential energy resource value of the vegetable waste, a great deal of available energy can be wasted. The Chinese invention patent name is 'a vegetable straw and livestock and poultry manure on-site treatment system', with application number of CN2020216911814, the utility model discloses a vegetable straw and livestock and poultry manure on-site treatment system, belonging to the technical field of agricultural waste treatment. The utility model discloses a can guarantee through the processing simple relatively and cheap that middle and small beasts and birds raisers bury on the spot to vegetable straw and livestock and poultry excrement and urine, the shortcoming lies in that the system just carries out simple aerobic treatment with the discarded object after, and the surface has had certain improvement to the earth's surface environment, but the discarded object after handling still has certain contamination to the soil, and has ignored the due value of this type of discarded object.
Disclosure of Invention
The invention aims to provide a heat-returning and quality-returning system applied to scale treatment of waste vegetables.
The invention relates to a heat-returning and mass-returning system applied to scale treatment of tail vegetables, which comprises a crushing device 1, a mixing and stirring tank 2, a hydrolysis tank 3, a fermentation tank 4, a solid-liquid separation device 5, a first sewage pump 6a, a three-way valve 7, a second sewage pump 6b, a coil heat exchanger 11, a variable flow water pump 12 and a water source heat pump 13, wherein the discharged material of the fermentation tank 4 is divided into two parts of biogas residues and biogas slurry through the solid-liquid separation device 5, the biogas slurry is sent to the three-way valve 7 through the first sewage pump 6a, the return end of the three-way valve 7 is provided with the second sewage pump 6b, and the second sewage pump 6b is connected with the mixing and stirring tank 2; the liquid outlet end of the three-way valve 7 is connected with an aerobic tank 9; an aeration device 10 is arranged at the bottom of the aerobic tank 9, and is fixed through screws and welding; a coiled pipe heat exchanger 11 is erected on the inner side wall of the aerobic tank, the coiled pipe heat exchanger 11 is composed of vertical grid-shaped stainless steel pipes, and the surfaces of the steel pipes are subjected to anti-corrosion treatment; a stainless steel frame 14 is arranged between the coil heat exchanger 11 and the inner side wall of the aerobic tank 9; the water outlet end of the coil heat exchanger is provided with a variable flow water pump 12, the water outlet pipe of the variable flow water pump is connected with the evaporation end of a water source heat pump 13, and the heat transfer between the hydrolysis tank 3 and the aerobic tank 4 and the condensation end of the water source heat pump is realized by a hot water pipeline between the two; the hot water pipeline is substantially composed of a water outlet pipeline of the water source heat pump, inner coil pipes of the hydrolysis tank 3 and the fermentation tank 4, and outer coil pipes of the hydrolysis tank 3 and the fermentation tank 4, and is controlled by constant temperature difference and variable flow.
Compared with the prior art, the invention has the beneficial effects that: 1. the invention effectively solves the problems of easy instability, high energy consumption, low treatment efficiency and low treatment capacity of the existing vegetable waste large-scale treatment system, effectively solves the problem of easy acidification in the anaerobic fermentation process of vegetable waste through biogas slurry reflux, ensures the stable operation of a fermentation system, meets the feeding and heat preservation heat loads of a hydrolysis tank and a fermentation tank by adding a waste heat recovery device, and ensures the gas production rate and the treatment capacity of the system. 2. The invention adopts the coil heat exchanger to directly recover the waste heat in the aerobic tank, the heat exchange coil is erected in the aerobic tank, the operation can be carried out for 24 hours, and the temperature of the sewage in the aerobic tank is stable due to the continuous operation of the aerobic process, so that the recoverable heat is effectively ensured, the system operation cost is greatly reduced, and the overall economy is improved. The system can ensure the high-efficiency low-cost stable operation of the anaerobic fermentation process of vegetable wastes, simultaneously recovers the sewage heat in the aerobic tank and is used for heating and insulating the hydrolysis tank and the fermentation tank, effectively reduces the energy consumption of the system and realizes the high-efficiency low-cost operation.
Drawings
Fig. 1 is a process flow diagram of the invention, fig. 2 is a structural schematic diagram of a heat exchange coil in an aerobic tank, fig. 3 is a schematic diagram of an aeration device at the bottom of the aerobic tank, and fig. 4 is a structural schematic diagram of the whole aerobic tank with the built-in coil.
Detailed Description
As shown in figure 1, the invention is a heat-returning and mass-returning system applied to scale treatment of the tail vegetables, which comprises a crushing device 1, a mixing and stirring tank 2, a hydrolysis tank 3, a fermentation tank 4, a solid-liquid separation device 5, a first sewage pump 6a, a three-way valve 7, a second sewage pump 6b, a coil pipe heat exchanger 11, a variable flow water pump 12 and a water source heat pump 13, wherein the discharged material of the fermentation tank 4 is divided into two parts of biogas residue and biogas slurry through the solid-liquid separation device 5, the biogas slurry is sent to the three-way valve 7 through the first sewage pump 6a, the backflow end of the three-way valve 7 is provided with the second sewage pump 6b, and the second sewage pump 6b is connected with the mixing and stirring tank 2; the liquid outlet end of the three-way valve 7 is connected with an aerobic tank 9; an aeration device 10 is arranged at the bottom of the aerobic tank 9, and is fixed through screws and welding; a coiled pipe heat exchanger 11 is erected on the inner side wall of the aerobic tank, the coiled pipe heat exchanger 11 is composed of vertical grid-shaped stainless steel pipes, and the surfaces of the steel pipes are subjected to anti-corrosion treatment; a stainless steel frame 14 is arranged between the coil heat exchanger 11 and the inner side wall of the aerobic tank 9; the water outlet end of the coil heat exchanger is provided with a variable flow water pump 12, the water outlet pipe of the variable flow water pump is connected with the evaporation end of a water source heat pump 13, and the heat transfer between the hydrolysis tank 3 and the aerobic tank 4 and the condensation end of the water source heat pump is realized by a hot water pipeline between the two; the hot water pipeline is substantially composed of a water outlet pipeline of the water source heat pump, inner coil pipes of the hydrolysis tank 3 and the fermentation tank 4, and outer coil pipes of the hydrolysis tank 3 and the fermentation tank 4, and is controlled by constant temperature difference and variable flow.
The heat and mass recovery system applied to the scale treatment of the waste vegetables adjusts the amount of the returned biogas slurry and regulates and controls parameters such as TS, pH and the like by adjusting the opening of a sewage pump behind the return end of the three-way valve, so that the smooth and stable operation of the system is ensured; the fermentation tank and the hydrolysis tank adopt a building structure of enameled steel plates, concrete, polystyrene and color steel plates, and have good heat insulation performance; the fermentation temperature can be effectively ensured by the heating mode of the sewage heat exchanger and the heat pump; through placing the coil pipe heat exchanger in the aerobic tank, the whole energy consumption of the system is greatly reduced by recycling waste water waste heat, meanwhile, the proper temperature for aerobic treatment can be maintained, the aerobic treatment efficiency is improved, the treatment efficiency and the treatment capacity of the system are comprehensively improved, and the high-efficiency and low-cost operation of a large-scale treatment system for the waste vegetables is ensured.
In the system, the three-way valve 7 divides the flowing biogas slurry, one part is returned to the mixing tank 2 through the second sewage pump 6b, and the other part is returned to the aerobic tank 9; the flow rate of the second sewage pump 6b can be adjusted.
In the system, the coil heat exchanger 11 consists of vertical grid-shaped stainless steel pipes, is connected with the steel structure on the inner wall of the aerobic tank 9 through bolts and is not contacted with the tank wall at the bottom of the tank; the stainless steel frame 14 is fixed inside the aerobic tank 9 by welding.
In the system, the aeration device is fixed at the bottom of the aerobic tank 9 through welding and screws, four air outlets are arranged, and the power of the aeration device is controlled by the installation controller in real time.
In the system, the mixing and stirring tank 2 is internally provided with the controller, and the material parameters in the tank are detected and fed back to the second sewage pump 6b when deviating from the set value by +/-10%.
In the system, the coil heat exchanger 11 is directly connected with the evaporation end of the water source heat pump through the variable flow water pump 12, and the condensation end is connected with the hydrolysis tank 3 and the fermentation tank 4 through the hot water pipeline.
In the system, a hot water circulating pipeline between the water source heat pump 13 and the hydrolysis tank 3 and the fermentation tank 4 consists of a water outlet pipeline of the water source heat pump, the hydrolysis tank 3 and the inner and outer coil pipes of the fermentation tank 4, and constant temperature difference variable flow control is adopted.
The invention is further developed by combining the attached drawings, as shown in fig. 1-4, the heat-returning and mass-returning system applied to the scale treatment of the waste vegetables is characterized in that the waste vegetables are simply crushed by a crushing device 1 and then are sent into a mixing tank 2, and the waste vegetables are fully mixed with the waste vegetable filtrate and the return biogas slurry and then are sent into a hydrolysis tank 3. The discharge of the anaerobic fermentation tank 4 is divided into two parts of biogas residue and biogas slurry after passing through a solid-liquid separation device 5. The biogas slurry is sent to a three-way valve 7 through a first sewage pump 6a, a second sewage pump 6b is installed behind the backflow end of the three-way valve 7, and the second sewage pump 6b is connected with the mixing and stirring device 2; the liquid outlet end of the three-way valve 7 is connected with an aerobic tank 9 in a way that the device is provided with a spiral connector. The bottom of the aerobic tank 9 is provided with an aeration device 10 which is fixed by screws and welding; the aerobic tank is internally and externally provided with a vertical wall with a heat exchange coil 11, the heat exchange coil 11 is composed of vertical grid-shaped stainless steel pipes, and the surfaces of the steel pipes are subjected to anticorrosion treatment. A stainless steel frame 14 is arranged between the coil heat exchanger 11 and the inner side wall of the aerobic tank 9. The water outlet end of the heat exchanger is provided with a variable flow water pump 12, the water outlet pipe of the water pump is connected with the evaporation end of a water source heat pump 13, and the heat transfer between the hydrolysis tank 3 and the aerobic tank 4 and the condensation end of the heat pump is realized by a hot water pipeline between the two. The water discharged from the condensation end of the heat pump sequentially enters the inner coil pipes of the hydrolysis tank 3 and the fermentation tank 4, then flows through the coil pipes on the outer walls of the hydrolysis tank 3 and the fermentation tank 4, and finally flows back to the condensation end of the heat pump to absorb heat.
As shown in fig. 1, part of the biogas slurry separated by the solid-liquid separation device 5 flows back to the mixing tank 2 through the three-way valve 7 and the second sewage pump 6b, and the amount of backflow can be adjusted according to the feedback of the controller in the mixing tank 2.
As shown in figures 1-4, a steel structure bracket 14 is arranged between the heat exchange coil 11 and the inner wall of the aerobic tank and used for fixing the coil heat exchanger.
As shown in figure 3, the fans 10 of the aeration device are arranged at the bottom of the aerobic tank 9, four groups of aeration devices are arranged, intelligent control is adopted, and the power of the aeration device is adjusted according to the daily water inflow.
As shown in figure 2, water flows in the heat exchange coil 11 and performs concurrent and countercurrent alternate heat exchange with biogas slurry outside the heat exchange coil, and the coil is fixed on a steel structure on the inner wall of the aerobic tank through bolts and is not contacted with the inner wall of the aerobic tank and the bottom of the aerobic tank, so that the cleaning is simple and convenient.
As shown in FIG. 2, the heat exchange coil 11 is made of vertical grid-like stainless steel tubes, and the surface thereof is subjected to antiseptic treatment.
As shown in figure 1, a variable flow water pump 12 is arranged at the water outlet end of the heat exchanger, the water outlet pipe of the water pump is connected with the evaporation end of a water source heat pump 13, the heat transfer between the hydrolysis tank 3 and the aerobic tank 4 and the condensation end of the heat pump is realized by a hot water pipeline between the hydrolysis tank and the aerobic tank, and the heat input into the system is changed by adjusting the flow of the water pump 12 between the heat pump 13 and the heat exchanger 11.
As shown in fig. 1 and 4, the effluent of the heat exchange coil 11 is upgraded by the heat pump system 13, and then is conveyed to the inner coils of the hydrolysis tank 3 and the anaerobic tank 4 to meet the feeding heat load, and then is conveyed to the outer coils of the hydrolysis tank 3 and the anaerobic tank 4 to meet the heat preservation heat load.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several equivalents and modifications may be made without departing from the principle of the present invention, and these equivalents and modifications should also be included in the protection scope of the present invention.
Claims (7)
1. The heat-return quality-returning system applied to scale treatment of the tail vegetables comprises a crushing device (1), a mixing and stirring tank (2), a hydrolysis tank (3), a fermentation tank (4), a solid-liquid separation device (5), a first sewage pump (6 a), a three-way valve (7), a second sewage pump (6 b), a coil pipe heat exchanger (11), a variable flow water pump (12) and a water source heat pump (13), and is characterized in that the discharged material of the fermentation tank (4) is divided into two parts of biogas residues and biogas slurry through the solid-liquid separation device (5), the biogas slurry is sent to the three-way valve (7) through the first sewage pump (6 a), the second sewage pump (6 b) is installed at the backflow end of the three-way valve (7), and the second sewage pump (6 b) is connected with the mixing and stirring tank (2); the liquid outlet end of the three-way valve (7) is connected with the aerobic tank (9); an aeration device (10) is arranged at the bottom of the aerobic tank (9), and the aeration device is fixed through screws and welding; a coiled pipe heat exchanger (11) is erected on the inner side of the aerobic tank, the coiled pipe heat exchanger (11) consists of vertical grid-shaped stainless steel pipes, and the surfaces of the steel pipes are subjected to anticorrosion treatment; a stainless steel frame (14) is arranged between the coil heat exchanger (11) and the inner side wall of the aerobic tank (9); a variable flow water pump (12) is arranged at the water outlet end of the coil heat exchanger, the water outlet pipe of the variable flow water pump is connected with the evaporation end of a water source heat pump (13), and the heat transfer between the hydrolysis tank (3) and the condensation end of the water source heat pump and the aerobic tank (4) is realized by a hot water pipeline between the hydrolysis tank and the condensation end of the water source heat pump; the hot water pipeline is substantially composed of a water outlet pipeline of the water source heat pump, inner coil pipes of the hydrolysis tank (3) and the fermentation tank (4), and outer coil pipes of the hydrolysis tank (3) and the fermentation tank (4), and constant temperature difference variable flow control is adopted.
2. The heat-returning and quality-returning system applied to scale treatment of the tailstocks as claimed in claim 1, wherein the three-way valve (7) divides the flowing biogas slurry into two parts, one part is returned to the mixing tank (2) through the second sewage pump (6 b), and the other part is returned to the aerobic tank (9); the flow rate of the second sewage pump (6 b) can be adjusted.
3. The heat and mass recovery system applied to scale treatment of the tail vegetables according to claim 1, wherein the coil heat exchanger (11) is composed of vertical grid-shaped stainless steel pipes, is connected with a steel structure on the inner wall of the aerobic tank (9) through bolts and is not contacted with the tank wall at the bottom of the aerobic tank; and the stainless steel frame (14) is fixed inside the aerobic tank (9) by welding.
4. The heat regeneration and recycling system applied to scale treatment of waste vegetables as claimed in claim 1, wherein the aeration device is fixed at the bottom of the aerobic tank (9) through welding and screws, four air outlets are arranged, and a controller is installed to control the power of the aeration device in real time.
5. The heat-regeneration quality-returning system applied to scale treatment of the tailed dishes according to claim 1, wherein a controller is arranged in the mixing and stirring tank (2), and the material parameters in the tank are detected and fed back to the second sewage pump (6 b) when the material parameters deviate from a set value by +/-10%.
6. The heat-returning and mass-returning system applied to scale treatment of the tail vegetables according to claim 1, wherein the coil heat exchanger (11) is directly connected with an evaporation end of a water source heat pump through a variable flow water pump (12), and a condensation end is connected with the hydrolysis tank (3) and the fermentation tank (4) through a hot water pipeline.
7. The heat-regeneration quality-returning system applied to scale treatment of the tailed vegetables according to claim 1, wherein a hot water circulating pipeline between the water source heat pump (13) and the hydrolysis tank (3) and the fermentation tank (4) is composed of an outlet pipeline of the water source heat pump, an inner coil and an outer coil of the hydrolysis tank (3) and the fermentation tank (4), and constant temperature difference variable flow control is adopted.
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| CN202210565817.8A CN114891604A (en) | 2022-05-24 | 2022-05-24 | Backheating quality recovery system applied to large-scale treatment of waste vegetables |
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| CN202210565817.8A CN114891604A (en) | 2022-05-24 | 2022-05-24 | Backheating quality recovery system applied to large-scale treatment of waste vegetables |
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