Safety equipment for efficiently hydrolyzing kitchen waste slurry to prepare acid and nitrogen removal carbon source

Abstract

The invention relates to safe equipment for efficiently hydrolyzing kitchen waste slurry to produce acid and nitrogen removal carbon sources, which comprises a large support frame, a hydrolysis tank is arranged at the upper end of the large support frame, a re-crushing device is arranged at the upper end of the left side of the hydrolysis tank, a settling tank is arranged at the lower end of the hydrolysis tank, and a device block is arranged at the upper end of the right side of the settling tank. A liquid pump is arranged at the upper end of the device block, a distillation device is arranged on the right side of the device block, a steam pipe is arranged in the center of the upper end of the distillation device, a heat exchanger is arranged in the center of the steam pipe, and the lower end of the right side of the steam pipe is fixedly connected with a collecting tank. The slurry pump for discharging on the left side of the settling tank is combined with the re-crushing device for re-crushing and pulping treatment, the utilization rate of materials is improved to the maximum extent, hydrolysate is purified through the distillation device, and meanwhile, water is heated by waste heat generated by steam water condensation through the heat exchanger, so that internal recycling of the waste heat is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly utilization of kitchen waste, and in particular to a safe device for producing a denitrification carbon source by efficiently hydrolyzing kitchen waste slurry to produce acid. Background Art

[0002] With the acceleration of urbanization and the improvement of people's living standards, the amount of food waste generated is increasing. If the food waste is not handled properly, it will not only cause environmental pollution, but also waste a lot of available resources. At present, the technology of converting food waste into useful resources has gradually attracted attention. Among them, using food waste to make denitrification carbon source is an effective way of resource utilization. However, in the process of hydrolyzing food waste slurry to produce acid and making it into denitrification carbon source, the existing food waste treatment equipment has problems such as low hydrolysis efficiency, insufficient acid production, and poor equipment safety, which limits the efficient resource utilization of food waste.

[0003] Patent No. CN202010190176.3 discloses a method for preparing biochar by hydrolyzing and carbonizing food waste, comprising the following steps: step 1, removing impurities and pulping the food waste to obtain a food waste raw material; step 2, mixing and stirring the food waste raw material with an iron-based biochar activator, a mixed enzyme, hydrolysis acidification tank sludge and distilled water at 37°C-40°C for 12 hours to obtain a hydrolyzate; step 3, transferring the hydrolyzate to a high-pressure reactor for a hydrothermal carbonization reaction to obtain biochar; the present invention uses a hydrolysis method to first treat the food waste, so that the food waste produces an end product that is conducive to the process. Hydrothermal carbonization; using iron compounds as activators can not only enhance the activity of the mixed enzyme, but also make the biochar magnetic, which is convenient for the recovery of the adsorbent; using hydrolysis acidification tank sludge to hydrolyze food waste can increase the carbon content of the product; it not only turns waste into treasure, but also solves environmental problems. However, the equipment has the following problems: First, after the hydrolysis acidification process, the equipment cannot perform secondary recycling treatment on the slurry residue that has not been completely hydrolyzed. Secondly, the equipment cannot perform distillation to extract high-purity hydrolyzate after extracting the hydrolyzate, and it is also impossible to recycle the waste heat of distillation for the internal circulation of the waste hot water flow. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art. By arranging a slurry pump for discharging materials on the left side of a sedimentation tank in combination with a re-crushing device, after the hydrolysis and acidification of the kitchen slurry is completed, it enters the sedimentation tank and is precipitated for a certain period of time. The acidified hydrolyzed liquid will float on the upper end due to the weight difference with the slurry, and the remaining residue will settle at the lower end. The remaining residue still contains a certain amount of organic matter and unreacted raw materials. At this time, the slurry pump uses power to suck the residue into the re-crushing device for re-crushing and pulping treatment, thereby maximizing the utilization rate of the material and solving the technical problem that the equipment cannot perform secondary circulation treatment on the slurry residue that is not completely hydrolyzed after the hydrolysis and acidification process is completed. By arranging a distillation device to purify the hydrolyzed liquid, a heat exchanger is arranged at the same time to heat the water with the waste heat generated by the condensation of steam to realize the internal circulation of the waste heat, thereby solving the technical problem that the equipment cannot perform distillation to extract the hydrolyzed liquid with high purity after extracting the hydrolyzed liquid, and cannot recycle the waste heat of distillation to perform the internal circulation of the waste hot water flow.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A safe device for producing a denitrification carbon source by efficiently hydrolyzing kitchen waste slurry to produce acid comprises a large support frame, a hydrolysis tank is provided at the upper end of the large support frame, a re-crushing device is provided at the upper left end of the hydrolysis tank, a precipitation tank is provided at the lower end of the hydrolysis tank, a device block is provided at the upper right end of the precipitation tank, a liquid pump is provided at the upper end of the device block, a distillation device is provided on the right side of the device block, a steam pipe is provided at the center of the upper end of the distillation device, a heat exchanger is provided at the center of the steam pipe, and the lower right end of the steam pipe is fixedly connected to a collection tank.

[0007] As a preferred embodiment, the hydrolysis tank is provided with a tank cover at the upper end, a stirring motor is provided at the center of the upper end of the tank cover, a rotating shaft is provided at the center of the lower end of the stirring motor, stirring wings are evenly provided on the outer side of the rotating shaft, the rotating shaft and the stirring wings are both located inside the hydrolysis tank, and a feed port is provided on the left side of the upper end of the tank cover, a sealing cover is hingedly connected to the upper end of the feed port, a water pipe connection port is provided on the front side of the upper end of the tank cover, a discharge port is provided at the lower end of the hydrolysis tank, an electric sealing valve is provided at the upper end of the discharge port, the upper and lower ends of the electric sealing valve are respectively connected to the bottom of the hydrolysis tank and the discharge port, an electric heating coil is provided inside the hydrolysis tank, and an electric heating element is provided inside the electric heating coil.

[0008] As a preferred embodiment, a slurry pump is provided at the lower left end of the sedimentation tank, a slurry suction port is provided at the center of the right side of the slurry pump, the right side center flange of the slurry suction port is connected to the slurry suction pipe, the slurry suction pipe flange is connected to the lower left end of the sedimentation tank, a slurry discharge port is provided at the upper right end of the slurry pump, the upper center flange of the slurry discharge port is connected to the slurry discharge pipe, and the left side flange of the upper end of the slurry discharge pipe is connected to the upper right end of the re-crushing device.

[0009] As a preferred embodiment, a re-crushing motor is provided at the center of the upper end of the re-crushing device, a transmission shaft is provided at the center of the lower end of the re-crushing motor, spiral crushing knives are evenly provided on the outside of the transmission shaft, the transmission shaft and the spiral crushing knives are located inside the re-crushing device, and an electric No. 2 sealing valve is provided at the lower right end of the re-crushing device, the right side flange of the electric No. 2 sealing valve is connected to the re-delivery pipe, and the right side flange of the re-delivery pipe is connected to the upper left end of the hydrolysis tank.

[0010] As a preferred embodiment, a suction port is provided at the left center of the liquid pump, the left flange of the suction port is connected to the suction pipe, the suction pipe flange is connected to the upper end of the right side of the sedimentation tank, a discharge port is provided at the upper left end of the liquid pump, the discharge port flange is connected to the discharge pipe, and the discharge pipe flange is connected to the left end of the distillation device.

[0011] Preferably, a heater is provided at the lower end of the distillation device, an electric heating element is provided inside the heater, the upper end of the heater is fixedly connected to the distillation tank, and a small support frame is provided on the outer side of the center of the distillation tank.

[0012] As a preferred embodiment, an insulating shell is provided on the outside of the heat exchanger, a water inlet cover is provided on the right side of the insulating shell, the right center of the water inlet cover is threadedly connected to the water inlet pipe, a water outlet cover is provided on the left side of the insulating shell, a three-way valve is provided at the center of the upper left end of the water outlet cover, and a circulating water pipe is provided inside the insulating shell.

[0013] As a preferred embodiment, the steam pipe runs horizontally through the center of the heat exchanger from left to right, and the circulating water pipe surrounds the outer periphery of the steam pipe.

[0014] As a preferred embodiment, the front center thread of the three-way valve is connected to the hot water pipe of the hydrolysis tank, the left side of the hot water pipe of the hydrolysis tank is connected to the upper end of the hydrolysis tank, the rear center thread of the three-way valve is connected to the re-crushing hot water pipe, and the left side of the re-crushing hot water pipe is connected to the upper end of the re-crushing device.

[0015] As another preferred embodiment, a support frame is provided at the lower end of the collecting tank, and a discharge port is provided at the lower end of the collecting pipe.

[0016] Beneficial effects of the present invention:

[0017] (1) In the present invention, a re-crushing device is provided to prevent the slurry residue that has not been completely hydrolyzed after the hydrolysis and acidification process from being processed for secondary circulation. After the hydrolysis and acidification process is completed, the kitchen slurry enters the sedimentation tank and is precipitated for a certain period of time. The acidified hydrolyzate will float on the upper end due to the difference in weight with the slurry, and the remaining residue will settle at the lower end. The remaining residue still contains a certain amount of organic matter and unreacted raw materials. The slurry pump uses power to suck the residue into the re-crushing device for re-crushing and pulping. Then, the re-crushing motor at the center of the upper end of the re-crushing device will start to drive the transmission shaft at the lower end to rotate. The rotation of the transmission shaft drives the spiral crushing knife to rotate to re-crush the slurry residue inside the re-crushing device for pulping, thereby avoiding the waste of usable materials and allowing materials that may have been discarded to participate in the processing flow of the equipment again, thereby improving the overall utilization rate of the materials.

[0018] (2) In the present invention, a distillation device is provided to purify the hydrolyzate, and a heat exchanger is provided to heat water with the waste heat generated by the condensation of steam to realize the internal recycling of the waste heat. After being temporarily placed in the precipitation tank for a certain period of time, the hydrolyzate will float up, and the remaining residue will settle at the lower end. The liquid pump will use the power to extract the hydrolyzate at the upper end of the precipitation tank into the distillation tank. After the absorption is completed, the heater will heat the hydrolyzate inside the distillation tank and boil the hydrolyzate to evaporate the components. Steam will continuously enter the steam pipe. When the steam is in the steam pipe, it will pass through the position of the heat exchanger. At this time, the water pipe connected to the heat exchanger has been transmitting cold water to the circulation pipe. The cold water inside the circulation pipe surrounds the outer periphery of the steam pipe to cool the steam pipe and condense the steam inside it, converting it into a liquid state again and flowing to the collection tank, thereby obtaining a denitrification carbon source with higher purity and better quality.

[0019] (3) In the present invention, a circulation pipe inside the heat exchanger is arranged to surround the outer periphery of the steam pipe to cool the internal steam. At the same time, a large amount of waste heat is released when the steam pipe condenses the steam. The waste heat will heat the cold water inside the circulation pipe. The heated water will enter the water pipe connected to the three-way valve through the water outlet cover connected to the circulation pipe, and enter the hydrolysis tank through the hot water pipe of the hydrolysis tank respectively. Hot water is added to the hydrolysis tank, which can optimize the activity of microorganisms and the rate of enzymatic reaction, thereby accelerating the hydrolysis and acidification process and improving its treatment efficiency. Then, the hot water enters the re-crushing device through the re-crushing hot water pipe, and hot water is added to the re-crushing device. The slurry residue inside the re-crushing device can more effectively make the soluble substances more easily dissolved in water, which helps to extract the valuable components in the residue. This process realizes the effective recovery and utilization of waste heat and increases the overall utilization rate of the slurry.

[0020] In summary, the equipment has the advantages of avoiding the waste of usable materials, improving the overall utilization rate of materials, and realizing the effective recovery and utilization of waste heat, and is particularly suitable for the field of environmentally friendly utilization technology of kitchen waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the hydrolysis tank in the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the stirring motor in the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the sedimentation tank, slurry pump connection position, re-crushing device, distillation device and collection tank in the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the re-crushing motor in the present invention.

[0027] Figure 6 It is a schematic diagram of the connection position structure of the liquid pump in the present invention.

[0028] Figure 7 It is a schematic diagram of the structure of the circulating heat exchanger in the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0030] Embodiment 1

[0031] like Figures 1 to 7 As shown, the present invention provides a safe device for producing a denitrification carbon source by efficiently hydrolyzing and acidifying kitchen waste slurry, comprising a large support frame 1, a hydrolysis tank 2 is provided at the upper end of the large support frame 1, a re-crushing device 8 is provided at the upper left end of the hydrolysis tank 2, a precipitation tank 3 is provided at the lower end of the hydrolysis tank 2, a device block 4 is provided at the upper right end of the precipitation tank 3, the device block 4 provides stability for a liquid pump 41, and also connects the precipitation tank 3 with a distillation device 5, a liquid pump 41 is provided at the upper end of the device block 4, a distillation device 5 is provided on the right side of the device block 4, a steam pipe 61 is provided at the center of the upper end of the distillation device 5, a heat exchanger 6 is provided at the center of the steam pipe 61, and the lower right end of the steam pipe 61 is fixedly connected to a collecting tank 7.

[0032] Further, the upper end of the hydrolysis tank 2 is provided with a tank cover 21, the upper end center of the tank cover 21 is provided with a stirring motor 22, the lower end center of the stirring motor 22 is provided with a rotating shaft 221, and the outer side of the rotating shaft 221 is evenly provided with stirring wings 223, the rotating shaft 221 and the stirring wings 223 are both located inside the hydrolysis tank 2, and the stirring motor 22 can provide stirring power, and after the stirring motor 22 is started, the rotating shaft 221 will be driven to rotate, and when the rotating shaft 221 rotates, the stirring wings 223 will be driven. The slurry in the hydrolysis tank 2 is rotated to stir, accelerate the hydrolysis and acidification in the hydrolysis tank 2, and also increase the comprehensiveness of the hydrolysis and acidification. A feed inlet 23 is provided on the left side of the upper end of the tank cover 21, and the kitchen waste slurry enters the hydrolysis tank 2 through the feed inlet 23. The upper end of the feed inlet 23 is hingedly connected to a sealing cover. When the kitchen waste slurry is added, the sealing cover can provide sealing to ensure the slurry acidification reaction. A water pipe connection port 24 is provided on the front side of the upper end of the tank cover 21. The water pipe connection port 24 is provided on the upper end of the tank cover 21. The connection port 24 can be connected to a tap water pipe to input tap water into the hydrolysis tank 2 to facilitate the hydrolysis and acidification reaction of the slurry. At the same time, a sealing valve is provided on the outside of the water pipe connection port 23. When water is not needed, the inlet can be closed to ensure the sealing of the inside of the hydrolysis tank 2. The lower end of the hydrolysis tank 2 is provided with a discharge port 26, and the upper end of the discharge port 26 is provided with an electric sealing valve 25. The electric sealing valve 25 includes a valve core, a valve seat and other parts for realizing the sealing function. The upper and lower ends of the electric sealing valve 25 are respectively connected to the bottom of the hydrolysis tank 2 and the discharge port 26. The discharge port 26 is located at the upper end of the precipitation tank 3. When the hydrolysis and acidification reaction is completed, the electric sealing valve 25 receives an electrical signal through an electric actuator to drive the valve to open and close, and the slurry after internal hydrolysis and acidification is put into the precipitation tank 3. An electric heating coil is provided inside the hydrolysis tank 2, and an electric heating element is provided inside the electric heating coil. The heating coil heats the internal slurry through the electric heating element, which can improve the reaction rate of the hydrolysis and acidification process.

[0033] Furthermore, a slurry pump 9 is provided at the lower left end of the sedimentation tank 3. The slurry pump 9 is composed of a motor, a transmission device, a pump body and a control system. When the motor is started, the impeller inside the pump body starts to rotate. Under the action of centrifugal force, the slurry is sucked into the pump body and flows out along the tangential direction of the impeller. As the impeller continues to rotate, the slurry forms a continuous flow in the pump body and generates a certain pressure. When the slurry flows out of the pump body, its pressure is sufficient to overcome gravity, thereby realizing transportation from a low place to a high place. A slurry suction port 91 is provided at the center of the right side of the slurry suction port 91. The center flange on the right side of the slurry suction port 91 is connected to a slurry suction pipe. The flange of the slurry suction pipe is connected to The lower left end of the sedimentation tank 3 is connected, and the upper right end of the slurry pump 9 is provided with a slurry discharge port 92. The center flange of the upper end of the slurry discharge port 92 is connected to the slurry discharge pipe. The left flange of the upper end of the slurry discharge pipe is connected to the upper right end of the re-crushing device 8. After the hydrolysis and acidification, the kitchen slurry enters the sedimentation tank 3 and is precipitated for a certain period of time. The acidified hydrolyzate will float on the upper end due to the difference in weight with the slurry, and the remaining residue will settle at the lower end. The remaining residue still contains a certain amount of organic matter and unreacted raw materials. When the liquid pump 41 extracts the hydrolyzate first, the slurry pump 9 uses power to suck the slurry residue into the re-crushing device 8 for re-crushing and pulping treatment.

[0034] Furthermore, a re-crushing motor 81 is provided at the center of the upper end of the re-crushing device 8, and a transmission shaft 812 is provided at the center of the lower end of the re-crushing motor 81. Spiral crushing knives 813 are evenly provided on the outer side of the transmission shaft 812. The transmission shaft 812 and the spiral crushing knives 813 are located inside the re-crushing device 8. The re-crushing motor 81 will start to drive the transmission shaft 812 at the lower end to rotate. The rotation of the transmission shaft 812 drives the spiral crushing knives 813 to rotate to crush and pulp the pulp residue inside the re-crushing device 8 again, thereby avoiding the waste of usable materials and allowing the materials that may have been discarded to participate in the processing flow of the equipment again. The overall utilization rate of the materials is improved. An electric No. 2 sealing valve 82 is provided at the lower right end of the re-crushing device 8. The right flange of the electric No. 2 sealing valve 82 is connected to the re-conveying pipe 83. The inside of the re-conveying pipe 83 is provided with an angle inclined downward from left to right. The right flange of the re-conveying pipe 83 is connected to the upper left end of the hydrolysis tank 2. The electric No. 2 sealing valve 82 includes parts such as a valve core and a valve seat to achieve a sealing function. The electric No. 2 sealing valve 82 receives an electrical signal through an electric actuator to drive the valve to open and close. The re-processed slurry residue will enter the hydrolysis tank 2 through the inclined angle of the re-conveying pipe 83 to participate in the hydrolysis acidification process again.

[0035] Furthermore, a suction port 412 is provided at the center of the left side of the liquid pump 41, and the left flange of the suction port 412 is connected to a suction pipe, and the suction pipe flange is connected to the upper end of the right side of the sedimentation tank 3, and the suction pipe is connected to the upper end of the interior of the sedimentation tank 3. A discharge port 413 is provided at the upper end of the left side of the liquid pump 41, and the discharge port 413 flange is connected to the discharge pipe, and the discharge pipe flange is connected to the left end of the distillation device 5. The liquid pump 41 utilizes the internal high-speed rotating blades to extract the hydrolyzate from the upper end of the interior of the sedimentation tank 3. At the same time, when the rotor rotates at high speed, the blades continuously push the hydrolyzate out and transmit it to the discharge pipe through the discharge port 412. The discharge pipe will transmit the hydrolyzate to the interior of the distillation tank 52 for the subsequent distillation and purification process.

[0036] Furthermore, a heater 51 is provided at the lower end of the distillation device 5, and an electric heating element is provided inside the heater 51. The upper end of the heater 51 is fixedly connected to the distillation tank 52. The heater 51 heats the hydrolyzate inside the distillation tank 52, and heats the hydrolyzate to boiling to evaporate each component. The steam will not only enter the steam pipe 61, but also a small support frame 53 is provided on the outer side of the center of the distillation tank 52 to provide stability for the distillation tank 52.

[0037] Furthermore, an insulating shell 62 is provided on the outside of the heat exchanger 6 to ensure that the internal heat will not be lost. A water inlet cover 621 is provided on the right side of the insulating shell 62. The center of the right side of the water inlet cover 621 is threadedly connected to the water inlet pipe. The water inlet pipe is connected to a circulating water pipe 622 at one end to transmit cold water to the circulating water pipe 622. A water outlet cover is provided on the left side of the insulating shell 62. The water outlet cover is connected to the circulating water pipe 622 at the other end. A three-way valve 624 is provided at the center of the upper left end of the water outlet cover. The core component of the three-way valve 624 is a sphere with three channel openings, which are respectively connected to three pipes. When the valve is in a closed state, the sphere is subjected to the mechanical pressure of the valve stem and is tightly pressed on the valve seat, thereby preventing the flow of the medium. A circulating water pipe 622 is provided inside the insulating shell 62, and the cooling water is not exposed to the air, resulting in very little water loss.

[0038] Furthermore, the steam pipe 61 passes through the center of the heat exchanger 6 horizontally from left to right, and the circulating water pipe 622 surrounds the outer periphery of the steam pipe 61. When the steam is in the steam pipe 61, it will pass through the position of the heat exchanger 6. At this time, the water pipe connected to the heat exchanger 6 has been transmitting cold water to the circulating pipe 622. The cold water inside the circulating pipe 622 surrounds the outer periphery of the steam pipe 61 to cool the steam pipe 61 and condense the steam inside it, converting it back into a liquid state and flowing into the collection tank 7, thereby obtaining a denitrification carbon source with higher purity and better quality.

[0039] Furthermore, the front center thread of the three-way valve 624 is connected to the hydrolysis tank hot water pipe 6242, and the left side of the hydrolysis tank hot water pipe 6242 is connected to the upper end of the hydrolysis tank 2. The rear center thread of the three-way valve 624 is connected to the re-crushing hot water pipe 6241, and the left side of the re-crushing hot water pipe 6241 is connected to the upper end of the re-crushing device 8. When the steam pipe 61 condenses steam, a large amount of waste heat will be emitted, and the waste heat will make the cold water inside the circulation pipe 622 hot. The hot water will enter the water pipe connected to the three-way valve 624 through the water outlet cover connected to the circulation pipe 622, and enter the hydrolysis tank 2 through the hydrolysis tank hot water pipe 6242 respectively, so that hot water is added to the hydrolysis tank 2, which can optimize the activity of microorganisms. The waste heat increases the rate of enzymatic reaction, thereby accelerating the hydrolysis and acidification process and improving its treatment efficiency. The waste heat enters the re-crushing device 8 through the re-crushing hot water pipe 6241, and hot water is added to the re-crushing device 8, so that the slurry residue inside the re-crushing device 8 can more effectively make the soluble substances more easily dissolved in water, which is helpful to extract the valuable components in the residue. This process realizes the effective recovery and utilization of waste heat, and at the same time increases the overall utilization rate of the slurry. When hot water is not transported, the hydrolysis tank 2 and the re-crushing device 8 and the hydrolysis tank hot water pipe 6242 and the re-crushing hot water pipe 6241 are provided with small sealing valves, which will ensure the sealing of the inside of the hydrolysis tank 2 and the inside of the re-crushing device 8.

[0040] Furthermore, a support frame 71 is provided at the lower end of the collecting tank 7 to increase the stability of the collecting tank 7, and a discharge port is provided at the lower end of the collecting pipe 7, so as to obtain a denitrification carbon source with higher purity and better quality.

[0041] Working process: First, the kitchen waste slurry enters the hydrolysis tank 2 through the feed port 23, and then the bacteria, regulators and nutrients are added. When the addition is completed, the sealing cover is closed to provide sealing to ensure the slurry acidification reaction. Then the heating ring heats the internal slurry through the electric heating element to increase the reaction rate of the hydrolysis and acidification process. During the hydrolysis and acidification, decomposition liquid and slurry residue will be decomposed. When the hydrolysis and acidification reaction is completed, the electric sealing valve 25 receives the electrical signal through the electric actuator to drive the valve to open and close, and the internal hydrolysis and acidification slurry is added into the sedimentation tank 3 for a certain period of time. The acidified hydrolyzate will float on the upper end due to the weight difference with the slurry, and the remaining residue will settle on the lower end. The remaining residue still contains a certain amount of organic matter and unreacted raw materials. Then the liquid pump 41 uses the internal high-speed rotating blades to extract the hydrolyzate from the upper end of the sedimentation tank 3. At the same time, when the rotor rotates at high speed, the blades continuously push the hydrolyzate out and transmit it to the discharge pipe through the discharge port 412. The discharge pipe will transmit the hydrolyzate to the inside of the distillation tank 52. When the absorption is completed, the slurry pump 9 then uses the power to absorb the residue to the re-crushing device 8 for re-crushing and pulping treatment, and then the re-crushing device The re-crushing motor 81 at the center of the upper end of the device 8 will start to drive the transmission shaft 812 at the lower end to rotate. The rotation of the transmission shaft 812 drives the spiral crushing knife 813 to rotate to crush the pulp residue inside the re-crushing device 8 again. When the re-crushing and pulping is completed, the electric No. 2 sealing valve 82 receives an electrical signal through the electric actuator to drive the valve to open and close. The re-processed pulp residue will enter the hydrolysis tank 2 through the inclined angle of the re-transport pipe 83 to participate in the subsequent hydrolysis and acidification process again, avoiding the waste of usable materials and allowing the materials that may have been discarded to participate in the treatment of the equipment again. The process improves the overall utilization rate of the material. When the hydrolyzate enters the distillation tank 52, the heater 51 will heat the hydrolyzate inside the distillation tank 52, and heat the hydrolyzate to boiling to evaporate the components. The steam will not only enter the steam pipe 61, but also pass through the position of the heat exchanger 6 in the steam pipe 61. The water pipe connected to the heat exchanger 6 at this time has been transmitting cold water to the circulation pipe 622. The cold water inside the circulation pipe 622 surrounds the outer periphery of the steam pipe to cool the steam pipe 61, condense the steam inside the steam pipe 61, and convert it into a liquid state again and flow to the collection tank 7, thereby obtaining a denitrification carbon source with higher purity and better quality.

[0042] Secondly, when the steam pipe 61 condenses steam, a large amount of waste heat will be released, and this waste heat will heat the cold water inside the circulation pipe 622. The heated water will enter the three-way valve 624 connected to the water pipe through the water outlet cover connected to the circulation pipe 622, and enter the hydrolysis tank 2 through the hydrolysis tank hot water pipe 6242 respectively. Adding hot water to the hydrolysis tank 2 can optimize the activity of microorganisms and the rate of enzymatic reaction, thereby accelerating the hydrolysis acidification process and improving its treatment efficiency. Then, the water will enter the re-crushing device 8 through the re-crushing hot water pipe 6241, and add hot water to the re-crushing device 8, so that the slurry residue inside the re-crushing device 8 can more effectively make the soluble substances more easily dissolved in water, which helps to extract the valuable components in the residue. This process realizes the effective recovery and utilization of waste heat, while increasing the overall utilization rate of the slurry.

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0044] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A safe equipment for producing denitrification carbon source by high-efficiency hydrolysis of kitchen waste slurry and acid production, characterized by: The invention comprises a large support frame (1), wherein a hydrolysis tank (2) is provided at the upper end of the large support frame (1), a re-crushing device (8) is provided at the upper left end of the hydrolysis tank (2), a sedimentation tank (3) is provided at the lower end of the hydrolysis tank (2), a device block (4) is provided at the upper right end of the sedimentation tank (3), a liquid extraction pump (41) is provided at the upper end of the device block (4), a distillation device (5) is provided at the right side of the device block (4), a steam pipe (61) is provided at the center of the upper end of the distillation device (5), a heat exchanger (6) is provided at the center of the steam pipe (61), and the lower right end of the steam pipe (61) is fixedly connected to a collection tank (7).

2. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 1 is characterized in that: The hydrolysis tank (2) is provided with a tank cover (21) at the upper end, a stirring motor (22) is provided at the center of the upper end of the tank cover (21), a rotating shaft (221) is provided at the center of the lower end of the stirring motor (22), stirring wings (223) are evenly provided on the outer side of the rotating shaft (221), the rotating shaft (221) and the stirring wings (223) are both located inside the hydrolysis tank (2), and a feed port (23) is provided on the left side of the upper end of the tank cover (21), the upper end of the feed port (23) is hingedly connected to a sealing cover, a water pipe connection port (24) is provided on the front side of the upper end of the tank cover (21), a discharge port (26) is provided at the lower end of the hydrolysis tank (2), an electric sealing valve (25) is provided at the upper end of the discharge port (26), the upper and lower ends of the electric sealing valve (25) are respectively connected to the bottom of the hydrolysis tank (2) and the discharge port (26), an electric heating coil is provided inside the hydrolysis tank (2), and an electric heating element is provided inside the electric heating coil.

3. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 1 is characterized in that: A slurry pump (9) is provided at the lower left end of the sedimentation tank (3), and a slurry suction port (91) is provided at the center of the right side of the slurry pump (9). The center flange on the right side of the slurry suction port (91) is connected to a slurry suction pipe. The flange of the slurry suction pipe is connected to the lower left end of the sedimentation tank (3). A slurry discharge port (92) is provided at the upper right end of the slurry pump (9), and the center flange on the upper end of the slurry discharge port (92) is connected to the slurry discharge pipe. The left flange on the upper end of the slurry discharge pipe is connected to the upper right end of the re-crushing device (8).

4. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 1 is characterized in that: A re-crushing motor (81) is provided at the center of the upper end of the re-crushing device (8), a transmission shaft (812) is provided at the center of the lower end of the re-crushing motor (81), spiral crushing knives (813) are evenly provided on the outer side of the transmission shaft (812), the transmission shaft (812) and the spiral crushing knives (813) are located inside the re-crushing device (8), an electric No. 2 sealing valve (82) is provided at the lower right end of the re-crushing device (8), the right side flange of the electric No. 2 sealing valve (82) is connected to the re-delivery pipe (83), and the right side flange of the re-delivery pipe (83) is connected to the upper left end of the hydrolysis tank (2).

5. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 1 is characterized in that: A suction port (412) is provided at the center of the left side of the liquid pump (41), and the left side flange of the suction port (412) is connected to a suction pipe, and the suction pipe flange is connected to the upper right end of the sedimentation tank (3). A discharge port (413) is provided at the upper left end of the liquid pump (41), and the discharge port (413) is flange-connected to a discharge pipe, and the discharge pipe flange is connected to the left end of the distillation device (5).

6. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 1 is characterized in that: A heater (51) is provided at the lower end of the distillation device (5), an electric heating element is provided inside the heater (51), the upper end of the heater (51) is fixedly connected to a distillation tank (52), and a small support frame (53) is provided on the outer side of the center of the distillation tank (52).

7. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 1 is characterized in that: A heat-insulating outer shell (62) is provided on the outside of the heat exchanger (6), a water inlet cover (621) is provided on the right side of the heat-insulating outer shell (62), the center of the right side of the water inlet cover (621) is threadedly connected to the water inlet pipe, a water outlet cover is provided on the left side of the heat-insulating outer shell (62), a three-way valve (624) is provided at the center of the upper left end of the water outlet cover, and a circulating water pipe (622) is provided inside the heat-insulating outer shell (62).

8. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 7 is characterized in that: The steam pipe (61) runs horizontally through the center of the heat exchanger (6) from left to right, and the circulating water pipe (622) surrounds the outer periphery of the steam pipe (61).

9. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 7, characterized in that: The front center thread of the three-way valve (624) is connected to the hot water pipe (6242) of the hydrolysis tank, and the left side of the hot water pipe (6242) of the hydrolysis tank is connected to the upper end of the hydrolysis tank (2). The rear center thread of the three-way valve (624) is connected to the re-crushing hot water pipe (6241), and the left side of the re-crushing hot water pipe (6241) is connected to the upper end of the re-crushing device (8).

10. The safe equipment for producing denitrification carbon source by high-efficiency hydrolysis and acid production of kitchen waste slurry according to claim 1, characterized in that: A support frame (71) is provided at the lower end of the collecting tank (7), and a dosage outlet is provided at the lower end of the collecting pipe (7).

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