A device for pyrolytic separation treatment of kitchen waste

Abstract

The present invention relates to the technical field of pyrolysis of kitchen waste, and specifically to a pyrolysis separation treatment device for kitchen waste, which includes a water supply device, a pyrolysis occurrence device, a feeding device, and a separation device. It is characterized in that the water supply device is sequentially connected to the pyrolysis occurrence device and the feeding device, the feeding device is connected to the separation device via the pyrolysis occurrence device, and the pyrolysis occurrence device is connected with a smoke exhaust device; the pyrolysis occurrence device includes a furnace body and a burner, the furnace body is connected to the burner through a combustion chamber, and a steam spiral tube is sleeved on the outer periphery of the combustion chamber; this device can make the reactants be heated evenly, the temperature inside the furnace body is constant, making the whole reaction process stable, reducing heat energy loss, and finally the whole system resourcefully utilizes the kitchen waste. This device integrates steam production and kitchen waste treatment, and does not require the investment in steam boiler equipment, thus avoiding complex processes and equipment investment, and making the whole treatment process fast and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of pyrolysis of kitchen waste, and specifically to a device for pyrolysis and separation treatment of kitchen waste. Background Art

[0002] Kitchen waste is the main source of pollution of urban domestic waste. If not treated in time or improperly, it will cause great pollution to the environment and threaten the physical and mental health of humans. However, if treated properly, it can bring high utilization value. Currently, the treatment methods of kitchen waste are basically divided into five types: crushing and direct discharge, landfill, fertilizer treatment, feed treatment, and energy treatment. Among them, energy treatment mainly includes incineration, thermal decomposition, fermentation to produce hydrogen, etc. The existing thermal decomposition method is to pyrolyze the waste at high temperature to convert the energy contained in the waste into the form of gas, oil, and carbon, and then use it. The pyrolysis temperature of organic matter in kitchen waste is usually between 300°C and 500°C. The higher the reaction temperature, the faster the reaction rate and the more complete the reaction. However, providing a constant temperature for the reaction process can make the thermal decomposition reaction more stable, reduce heat energy loss, fully treat kitchen waste, and thus achieve a good energy-saving effect. How to achieve these beneficial effects through a simple device is also a problem that needs to be solved currently. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device for pyrolysis and separation treatment of kitchen waste, which can effectively solve the problems raised in the above background art.

[0004] To solve the above problems, the technical solution adopted by the present invention is: a device for pyrolysis and separation treatment of kitchen waste, including a water supply device, a pyrolysis generating device, a feeding device, and a separation device. It is characterized in that the water supply device is sequentially connected to the pyrolysis generating device and the feeding device, the feeding device is connected to the separation device via the pyrolysis generating device, and a smoke exhaust device is connected to one side of the pyrolysis generating device; the pyrolysis generating device includes a furnace body and a burner, the furnace body is connected to the burner through a combustion chamber inside the furnace body, and a steam spiral tube is sleeved outside the combustion chamber; the water supply device includes a waste heat water tank and a high-pressure pump, and the waste heat water tank is connected to the steam spiral tube through a pipeline in sequence with the high-pressure pump.

[0005] Preferably, the outlet of the waste heat water tank is connected to the inlet pipeline of the high-pressure pump, and the outlet of the high-pressure pump is connected to the inlet pipeline of the atomizer.

[0006] Preferably, the burner includes a first burner and a second burner. The combustion chamber is in a circular tubular structure and includes a first combustion chamber and a second combustion chamber. The steam spiral tube includes a steam generating tube and a steam pyrolysis tube. The steam generating tube is sleeved on the outer periphery of the first combustion chamber, and the steam pyrolysis tube is sleeved on the outer periphery of the second combustion chamber. One end of the first combustion chamber is connected to the first burner, one end of the second combustion chamber is connected to the second burner, and the other ends of the first combustion chamber and the second combustion chamber are both connected to the smoke exhaust device.

[0007] Preferably, the smoke exhaust device is a flue gas duct, which includes a first flue gas duct and a second flue gas duct. The first flue gas duct passes through the surplus hot water tank and is connected to the second flue gas duct. The first flue gas duct includes a primary flue gas duct and a secondary flue gas duct. The input end of the primary flue gas duct is connected to the output end of the first combustion chamber, and the input end of the secondary flue gas duct is connected to the output end of the second combustion chamber.

[0008] Preferably, the atomizer is sleeved inside the input end of the steam generating tube.

[0009] Preferably, the feeding device includes a feeding tank, a conveying component and a steam distribution cylinder. The feeding tank and the steam distribution cylinder are both connected to the conveying component, and the conveying component is connected to one side of the furnace body.

[0010] Preferably, the conveying component includes a screw conveyor and a collecting pipe connected in sequence. The feeding tank is provided with a feeding inlet and a feeding outlet. The feeding outlet is connected to the screw conveyor. The input end of the steam distribution cylinder is connected to the output end of the steam generating tube. The output end of the steam distribution cylinder is connected to the collecting pipe via a pipeline. One end of the collecting pipe is connected to the input end of the steam pyrolysis tube.

[0011] Preferably, the separation device is a separation tower. The input end of the separation tower is connected to the output end of the steam pyrolysis tube. The separation tower is provided with a bottom layer output end, a middle layer output end and a top layer output end.

[0012] Compared with the prior art, the present invention provides a kitchen waste pyrolysis and separation treatment device, which has the following beneficial effects:

[0013] 1. By sleeving the spiral steam generating tube and steam pyrolysis tube on the outer periphery of the combustion chamber, on the one hand, the reactants can be heated evenly, and on the other hand, the temperature inside the furnace body can be kept constant. The structural design of the double combustion chamber avoids the situation of temperature difference of the heat conduction medium in the combustion chamber during continuous operation, making the whole reaction process stable, the kitchen waste fully reacted, greatly improving the pyrolysis efficiency of the furnace body, and reducing the heat energy loss.

[0014] 2. The organic matter in food waste reacts with high-temperature superheated steam in a high-temperature and airtight space through pyrolysis. After the organic matter is decomposed, it becomes harmless and can be collected and reused. Meanwhile, the inorganic salts in the food waste precipitate, and the moisture evaporates. Under the action of high temperature, it also has the effect of disinfection and sterilization. The collected solid and liquid (concentrate) can be used as raw materials or additives for making feed and fertilizer, and the gas can be used as fuel gas. The entire system finally realizes the resource utilization of food waste, achieving the effects of fertilizer treatment, feed treatment, and energy treatment;

[0015] 3. This device integrates steam production and food waste treatment. There is no need to invest in steam boiler equipment, thus avoiding complex processes and equipment investment, and making the entire treatment process fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a schematic diagram of the structure of the water supply device of the present invention;

[0018] Figure 3 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 4 is a schematic diagram of a partial structure of the present invention;

[0020] Figure 5 is a schematic diagram of a partial structure of the transmission of the present invention.

[0021] Wherein: 1. Water supply device, 11. Surplus hot water tank, 12. High-pressure pump, 13. Atomizer, 2. Pyrolysis generating device, 21. Furnace body, 22. Burner, 221. First burner, 222. Second burner, 23. Combustion chamber, 231. First combustion chamber, 232. Second combustion chamber, 24. Steam spiral pipe, 241. Steam generating pipe, 242. Steam pyrolysis pipe, 3. Feeding device, 31. Feeding tank, 32. Conveying assembly, 321. Screw conveyor, 322. Collection pipe, 33. Separator cylinder, 4. Separation device, 41. Bottom output end, 42. Middle output end, 43. Top output end, 5. Smoke exhaust device, 51. First flue gas pipe, 511. Primary flue gas pipe, 512. Secondary flue gas pipe, 52. Second flue gas pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Refer to Figures 1-5, the present invention provides a device for pyrolysis separation treatment of kitchen waste, including a water supply device 1, a pyrolysis generation device 2, a feeding device 3 and a separation device 4, characterized in that the water supply device 1 is sequentially connected to the pyrolysis generation device 2 and the feeding device 3, the feeding device 3 is connected to the separation device 4 via the pyrolysis generation device 2, and a smoke exhaust device 5 is connected to one side of the pyrolysis generation device 2; the pyrolysis generation device 2 includes a furnace body 21 and a burner 22, the furnace body 21 is connected to the burner 22 through a combustion chamber 23 inside the furnace body 21, and a steam spiral tube 24 is sleeved outside the combustion chamber 23; the water supply device 1 includes a waste heat water tank 11 and a high-pressure pump 12, and the waste heat water tank 11 is sequentially connected to the high-pressure pump 12 and the steam spiral tube 24 through a pipeline.

[0024] There is a heat-conducting medium in the combustion chamber 23, and the heat-conducting medium is preferably molten salt. The molten salt is used to store energy and supply heat for the combustion chamber 23, provide a constant-temperature heat source during the reaction process, ensure the stability of the thermal reaction, and reduce the loss of thermal energy.

[0025] The steam spiral tube 24 is sleeved outside the combustion chamber 23, which can enable the substances in the steam spiral tube 24 to be fully pyrolyzed.

[0026] Preferably, the outlet of the waste heat water tank 11 is connected to the inlet pipeline of the high-pressure pump 12, and the outlet of the high-pressure pump 12 is connected to the inlet pipeline of the atomizer 13.

[0027] The high-pressure pump 12 is used to store the water discharged from the waste heat water tank and transport the water to the atomizer. The atomizer 13 atomizes the water and then discharges it into the steam spiral tube 24 in the furnace body 21.

[0028] Preferably, the burner 22 includes a first burner 221 and a second burner 222. The combustion chamber 23 has a circular tubular structure, and the combustion chamber 23 includes a first combustion chamber 231 and a second combustion chamber 232; the steam spiral tube 24 includes a steam generation tube 241 and a steam pyrolysis tube 242. The steam generation tube 241 is sleeved outside the first combustion chamber 231, and the steam pyrolysis tube 242 is sleeved outside the second combustion chamber 232; one end of the first combustion chamber 231 is connected to the first burner 221, one end of the second combustion chamber 232 is connected to the second burner 222, and the other ends of the first combustion chamber 231 and the second combustion chamber 232 are both connected to the smoke exhaust device 5.

[0029] Preferably, the smoke exhaust device 5 is a flue gas pipeline, which includes a first flue gas pipeline 51 and a second flue gas pipeline 52. The first flue gas pipeline 51 passes through the waste heat water tank 11 and is connected to the second flue gas pipeline 52. The first flue gas pipeline 51 includes a primary flue gas pipeline 511 and a secondary flue gas pipeline 512. The input end of the primary flue gas pipeline 511 is connected to the output end of the first combustion chamber 231, and the input end of the secondary flue gas pipeline 512 is connected to the output end of the second combustion chamber 232.

[0030] The first flue gas pipeline 51 passes through the waste heat water tank 11 and is connected to the second flue gas pipeline 52, using the waste heat in the flue gas pipeline to heat the water in the waste heat water tank 11, achieving the purpose of energy conservation.

[0031] Preferably, the atomizer 13 is sleeved inside the input end of the steam generating pipe 241.

[0032] Preferably, the feeding device 3 includes a feeding tank 31, a conveying assembly 32, and a steam distribution cylinder 33. Both the feeding tank 31 and the steam distribution cylinder 33 are connected to the conveying assembly 32, and the conveying assembly 32 is connected to one side of the furnace body 21.

[0033] Preferably, the conveying assembly 32 includes a screw conveyor 321 and a collecting pipe 322 connected in sequence. The feeding tank 31 is provided with a feeding inlet and a feeding outlet, and the feeding outlet is connected to the screw conveyor 321. The input end of the steam distribution cylinder 33 is connected to the output end of the steam generating pipe 241, and the output end of the steam distribution cylinder 33 is connected to the collecting pipe 322 via a pipeline. One end of the collecting pipe 322 is connected to the input end of the steam pyrolysis pipe 242.

[0034] Preferably, the separation device 4 is a separation tower. The input end of the separation tower is connected to the output end of the steam pyrolysis pipe 242, and the separation tower is provided with a bottom layer output end 41, a middle layer output end 42, and a top layer output end 43.

[0035] After the organic matter undergoes sufficient reaction and pyrolysis in the furnace body 21, the obtained organic products are discharged into the separation tower for stratification, divided into solid, liquid, and gaseous organic products. Among them, the bottom layer output end 41 is used to output solid organic products, the middle layer output end 42 is used to output liquid organic products, and the top layer output end 43 is used to output gaseous organic products.

[0036] As a specific embodiment of the present invention:

[0037] The heat-conducting medium in the combustion chamber 23 is heated to the working temperature (450°C - 550°C) by the first burner 221 and the second burner 222. The surplus hot water tank 11 is used to provide the water source for generating steam, which is transported to the steam generating pipe 241 by the high-pressure pump 12. Before being transported to the steam generating pipe 241, the water is atomized by the atomizer 13. The atomized water undergoes flash evaporation in the steam generating pipe 241 to become high-temperature (400 - 500°C) superheated steam, and then enters the steam header 33 for standby. The kitchen waste is poured into the feed tank 31 from the inlet of the feed tank 31, and then reaches the screw conveyor 321, which sends it into the collecting pipe 322. At the same time, the high-temperature superheated steam in the steam header 33 is also sent into the collecting pipe 322. At this time, the kitchen waste is combined with the high-temperature superheated steam and then enters the steam pyrolysis pipe 242 together for pyrolysis reaction. The organic matter decomposes at high temperature, the water evaporates at this time, the inorganic salts precipitate, and disinfection and sterilization are also carried out. Under the sufficient reaction in the entire steam pyrolysis pipe 242, the organic matter of the kitchen waste is completely decomposed and then enters the separation tower; the decomposed waste realizes solid, liquid and gas separation in the separation tower. Among them, the solid organic matter reaction products and inorganic salts sink and are collected at the bottom output end 41 of the tower. Part of the gaseous organic matter reaction products become liquid concentrated liquid after being condensed in the separation tower and are collected at the middle output end 42 of the tower. The water vapor can be condensed and recycled for system use after condensation, and the remaining gaseous organic matter reaction products will be collected at the top output end 43.

[0038] The reactants after the pyrolysis of organic matter can be used as raw materials or additives for fertilizers and feeds, and part of the gas can be used as fuel gas, and the water resources are recycled. After the harmless treatment of kitchen waste by this device, its resources are fully utilized.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A kitchen waste pyrolysis separation treatment device, comprising a water supply device (1), a pyrolysis generation device (2), a feeding device (3) and a separation device (4), characterized in that, The water supply device (1) is sequentially connected to the pyrolysis device (2) and the feeding device (3). The feeding device (3) is connected to the separation device (4) via the pyrolysis device (2). One side of the pyrolysis device (2) is connected with a smoke exhaust device (5). The pyrolysis device (2) includes a furnace body (21) and a burner (22). The furnace body (21) is connected to the burner (22) through a combustion chamber (23) inside the furnace body (21). A steam spiral tube (24) is sleeved outside the combustion chamber (23). The water supply device (1) includes a waste heat water tank (11) and a high-pressure pump (12). The waste heat water tank (11) is sequentially connected to the high-pressure pump (12) and the steam spiral tube (24) through pipelines. The burner (22) includes a first burner (221) and a second burner (222). The combustion chamber (23) has a circular tubular structure. The combustion chamber (23) includes a first combustion chamber (231) and a second combustion chamber (232). The steam spiral tube (24) includes a steam generating tube (241) and a steam pyrolysis tube (242). The steam generating tube (241) is sleeved outside the first combustion chamber (231). The steam pyrolysis tube (242) is sleeved outside the second combustion chamber (232). One end of the first combustion chamber (231) is connected to the first burner (221). One end of the second combustion chamber (232) is connected to the second burner (222). The other ends of the first combustion chamber (231) and the second combustion chamber (232) are both connected to the smoke exhaust device (5). The feeding device (3) includes a feeding tank (31), a conveying component (32) and a steam header (33). The feeding tank (31) and the steam header (33) are both connected to the conveying component (32). The conveying component (32) is connected to one side of the furnace body (21). The conveying component (32) includes a screw conveyor (321) and a collecting pipe (322) connected in sequence. The feeding tank (31) is provided with a feeding inlet and a feeding outlet. The feeding outlet is connected to the screw conveyor (321). The input end of the steam header (33) is connected to the output end of the steam generating tube (241). The output end of the steam header (33) is connected to the collecting pipe (322) through a pipeline. One end of the collecting pipe (322) is connected to the input end of the steam pyrolysis tube (242). Kitchen waste is poured into the feeding tank (31) from the inlet of the feeding tank (31), and then reaches the screw conveyor (321). It is sent into the collecting pipe (322) by the screw conveyor (321). At the same time, the high-temperature superheated steam in the steam header (33) is also sent into the collecting pipe (322). At this time, the kitchen waste is combined with the high-temperature superheated steam, and then enters the steam pyrolysis tube (242) together for pyrolysis reaction. The organic matter decomposes at high temperature, the moisture also evaporates at this time, the inorganic salts precipitate, and at the same time, disinfection and sterilization are carried out. Under the full reaction in the entire steam pyrolysis tube (242), the organic matter of the kitchen waste is completely decomposed and then enters the separation device.

2. The pyrolysis separation treatment device for kitchen waste according to claim 1, characterized in that, The outlet of the waste heat water tank (11) is connected to the inlet pipeline of the high-pressure pump (12), and the outlet of the high-pressure pump (12) is connected to the inlet pipeline of the atomizer (13).

3. A kitchen waste pyrolysis separation treatment device according to claim 1, characterized in that, The smoke exhaust device (5) is a smoke pipeline, which includes a first smoke pipeline (51) and a second smoke pipeline (52). The first smoke pipeline (51) passes through the waste heat water tank (11) and is connected to the second smoke pipeline (52). The first smoke pipeline (51) includes a primary smoke pipeline (511) and a secondary smoke pipeline (512). The input end of the primary smoke pipeline (�11) is connected to the output end of the first combustion chamber (231), and the input end of the secondary smoke pipeline (512) is connected to the output end of the second combustion chamber (232).

4. A kitchen waste pyrolysis separation treatment device according to claim 2, characterized in that, The atomizer (13) is sleeved inside the input end of the steam generating pipe (241).

5. The pyrolysis separation treatment device for kitchen waste according to claim 1, characterized in that, The separation device (4) is a separation tower. The input end of the separation tower is connected to the output end of the steam pyrolysis pipe (242). The separation tower is provided with a bottom output end (41), a middle output end (42), and a top output end (43).

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