Kitchen garbage treatment system

Abstract

The utility model relates to the technical field of garbage treatment, in particular to a kitchen garbage treatment system which comprises a vacuum drying device, a heating device, an injection device, a garbage incineration device and a steam boiler. The injection device is provided with a high-pressure injection inlet, a low-pressure injection inlet and an injection outlet, the waste incineration device is provided with a waste inlet and a hot smoke channel, the steam boiler is provided with a heating end and a steam outlet, the heating device is connected with the vacuum drying device, the vacuum drying solid outlet is connected with the waste inlet, and the hot smoke channel is connected with the heating end. The steam outlet is connected with the high-pressure injection inlet, and the vacuum drying gas outlet is connected with the low-pressure injection inlet. According to the kitchen garbage drying device, the energy consumption of kitchen garbage drying treatment can be reduced, and the treatment cost of kitchen garbage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage treatment technical field more specifically, relate to a kind of kitchen garbage treatment system. BACKGROUND

[0002] Kitchen garbage is the garbage with higher water content, after the initial oil-water separation, kitchen garbage still has higher water content, and its water content can reach 80%. Although the dry basis heat value of kitchen garbage is higher, due to its high water content, it needs to be dried before combustion. The energy consumption of the existing drying equipment is generally high, which leads to high cost of kitchen garbage treatment. Therefore, a new kitchen garbage treatment system needs to be designed. SUMMARY

[0003] The utility model provides a kind of kitchen garbage treatment system to overcome the problem of high energy consumption and cost of kitchen garbage treatment in the prior art, which can reduce the energy consumption of drying kitchen garbage and reduce operating cost.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of a kind of kitchen garbage treatment system, comprising: vacuum drying device, heating device, ejector device, garbage incinerator and steam boiler, the vacuum drying device has vacuum drying inlet, vacuum drying solid outlet and vacuum drying gaseous outlet, the ejector device has high pressure injection inlet, low pressure injection inlet and injection outlet, the garbage incinerator has garbage inlet and hot flue gas passage, the steam boiler has heating end and steam outlet, the heating device is connected with the vacuum drying device, the vacuum drying solid outlet of the vacuum drying device is connected with the garbage inlet of the garbage incinerator, the hot flue gas passage of the garbage incinerator is connected with the heating end of the steam boiler, the steam outlet of the steam boiler is connected with the high pressure injection inlet of the ejector device, and the vacuum drying gaseous outlet of the vacuum drying device is connected with the low pressure injection inlet of the ejector device.

[0005] In the technical scheme of the utility model, the dried kitchen garbage is incinerated in the garbage incinerator, the heat of the hot flue gas generated by the garbage incinerator is used to heat the steam boiler, and high pressure steam can be generated. The high pressure steam enters the high pressure injection inlet of the ejector device, which plays a role of injection suction to the low pressure injection inlet, and sucks the air and water vapor in the vacuum drying device, so that vacuum is generated in the vacuum drying device, which can reduce energy consumption compared with using vacuum pump to suck vacuum. The kitchen garbage in the vacuum drying device is heated and dried by the heating device, and since the kitchen garbage is heated in the low pressure of the vacuum drying device, the water in the kitchen garbage can evaporate at a lower temperature, which can reduce the heating energy consumption.

[0006] Further, the system further comprises an air preheater, the air preheater having an external air inlet, a hot air outlet, a steam preheating inlet and a steam preheating outlet, the waste incineration device having a preheated air inlet, the hot air outlet being connected with the preheated air inlet, the steam preheating inlet being connected with the steam outlet, the steam preheating outlet being connected with the high pressure entraining inlet, the steam boiler further being provided with a user steam supply port.

[0007] In the present scheme, the external air entering the waste incineration device can be preheated by the air preheater, and the steam generated by the steam boiler can be supplied to external users, such as other steam equipment, through the user steam supply port.

[0008] Further, the heating device is a heating jacket, the heating jacket being wrapped outside the vacuum drying device, the heating jacket having a first heating inlet and a waste water outlet.

[0009] In the present scheme, the moisture of the kitchen waste in the vacuum drying device can be evaporated by providing hot water through the heating jacket.

[0010] Further, the system further comprises a hot water pool, the hot water pool having a hot water supply port, the hot water supply port being connected with the first heating inlet of the heating jacket.

[0011] In the present scheme, the hot water pool is used to supply hot water to the heating jacket.

[0012] Further, a water pump is further arranged between the hot water supply port of the hot water pool and the first heating inlet of the heating jacket, the inlet of the water pump being connected with the hot water supply port of the hot water pool through a pipeline, and the outlet of the water pump being connected with the first heating inlet of the heating jacket through a pipeline.

[0013] In the present scheme, the water pump is used to pump the hot water in the hot water pool into the heating jacket.

[0014] Further, the system further comprises a sewage pool, the sewage pool having a sewage inlet, the waste water outlet of the heating jacket being connected with the sewage inlet.

[0015] In the present scheme, the sewage pool is used to contain the waste water generated by the heating jacket.

[0016] Further, the bottom of the sewage pool is provided with a sewage discharge port.

[0017] In the present scheme, the sewage discharge port is used to discharge the sewage in the sewage pool.

[0018] Further, the heating jacket has a second heating inlet, and the entraining outlet of the entraining device is connected with the second heating inlet of the heating jacket.

[0019] In the scheme, the second hot inlet is used for receiving the high-temperature gas-liquid mixture generated by the ejection device through the ejection suction effect, so as to reduce the hot water consumption of the heating jacket.

[0020] Further, the system further comprises a kitchen waste sorting device, the kitchen waste sorting device has an oil-water outlet and a wet material outlet, and the wet material outlet is connected with the vacuum drying inlet of the vacuum drying device.

[0021] In the scheme, the kitchen waste sorting device is used for separating the oil-water and large wet materials of the kitchen waste, so as to facilitate incineration treatment.

[0022] Further, the system further comprises a biogas fermentation tank, the biogas fermentation tank has a feeding port and a biogas outlet, the kitchen waste sorting device further comprises a waste residue outlet, and the waste incineration device further has a biogas inlet, the feeding port of the biogas fermentation tank is connected with the waste residue outlet of the kitchen waste sorting device, and the biogas outlet is connected with the biogas inlet.

[0023] In the scheme, the biogas fermentation tank is used for fermenting the waste residue separated from the kitchen waste, and the biogas generated by the biogas fermentation tank is supplied to the waste incineration device, so as to promote the incineration of the kitchen waste.

[0024] Further, the biogas fermentation tank further has a liquid phase outlet, and the liquid phase outlet of the biogas fermentation tank is connected with the sewage inlet of the sewage tank.

[0025] In the scheme, the liquid phase outlet of the biogas fermentation tank is used for discharging the water generated in the fermentation process.

[0026] Compared with the prior art, the kitchen waste treatment system has the following beneficial effects:

[0027] Firstly, the kitchen waste treatment system of the utility model, the kitchen waste after drying is incinerated in the waste incineration device, the heat of the hot flue gas generated by the waste incineration device is used to heat the steam boiler, and high-pressure steam can be generated. The high-pressure steam enters the high-pressure ejection inlet of the ejection device, plays the ejection suction effect on the low-pressure ejection inlet, sucks the air and water vapor in the vacuum drying device, and makes the vacuum drying device generate vacuum. Compared with the vacuum pump, the energy consumption can be reduced. The kitchen waste in the vacuum drying device is heated by the heating device. Since the kitchen waste is heated in the low pressure of the vacuum drying device, the water in the kitchen waste can evaporate at a lower temperature, and the heating energy consumption can be reduced.

[0028] Secondly, the heating device adopts a heating jacket. Since the water in the kitchen waste can evaporate at a lower temperature, the temperature of the hot water for heating the kitchen waste in the vacuum drying device is sufficient. The hot water in the heating jacket can be obtained from the hot water tank and the ejection outlet of the ejection device, and the heat in the steam is further utilized.

[0029] III. Further utilize the waste residue of kitchen garbage to ferment in the biogas fermentation tank to produce biogas, supply the biogas to the garbage incineration device to assist combustion, fully utilize the calorific value of kitchen garbage, and improve the kitchen garbage treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the overall structure schematic diagram of the kitchen garbage treatment system of the utility model, and

[0031] Figure 2 is the structure schematic diagram of the kitchen garbage sorting device.

[0032] In the drawings: 1, vacuum drying device; 11, vacuum drying inlet; 12, vacuum drying solid-state outlet; 13, vacuum drying gaseous outlet; 2, ejector device; 21, high-pressure ejector inlet; 22, low-pressure ejector inlet; 23, ejector outlet; 3, garbage incineration device; 31, garbage inlet; 32, hot flue gas passage; 33, preheated air inlet; 34, biogas inlet; 4, steam boiler; 41, heating end; 42, steam outlet; 43, user steam supply port; 5, heating device; 51, first heat inlet; 52, wastewater outlet; 53, second heat inlet; 6, hot water tank; 61, hot water supply port; 7, water pump; 8, sewage tank; 81, sewage inlet; 82, sewage discharge port; 9, kitchen garbage sorting device; 91, oil-water outlet; 92, wet material outlet; 93, waste residue outlet; 94, cylinder, 95, extrusion plate; 96, container body; 97, partition; 10, biogas fermentation tank; 101, feeding port; 102, liquid phase outlet; 103, biogas outlet; 20, air preheater; 201, external air inlet; 202, hot air outlet; 203, steam preheating inlet; 204, steam preheating outlet. DETAILED DESCRIPTION

[0033] The drawings are only used for exemplary illustration, and cannot be understood as the limitation of the patent; in order to better illustrate the embodiment, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it can be understood that some well-known structures in the drawings and their descriptions can be omitted. The positional relationship described in the drawings is only used for exemplary illustration, and cannot be understood as the limitation of the patent.

[0034] The same or similar reference signs in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that, if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "long" and "short" are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation and be operated, therefore, the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0035] The technical scheme of the present application will be further described in detail below through specific embodiments and in combination with the drawings:

[0036] Embodiment 1

[0037] Reference Figure 1 The present embodiment discloses a kitchen waste treatment system, comprising a vacuum drying device 1, a heating device 5, an ejector device 2, a waste incineration device 3 and a steam boiler 4, the vacuum drying device 1 has a vacuum drying inlet 11, a vacuum drying solid outlet 12 and a vacuum drying gaseous outlet 13, the ejector device 2 has a high-pressure ejector inlet 21, a low-pressure ejector inlet 22 and an ejector outlet 23, the waste incineration device 3 has a waste inlet 31 and a hot flue gas passage 32, the steam boiler 4 has a heating end 41 and a steam outlet 42, the heating device 5 is connected with the vacuum drying device 1, the vacuum drying solid outlet 12 of the vacuum drying device 1 is connected with the waste inlet 31 of the waste incineration device 3, the hot flue gas passage 32 of the waste incineration device 3 is connected with the heating end 41 of the steam boiler 4, the steam outlet 42 of the steam boiler 4 is connected with the high-pressure ejector inlet 21 of the ejector device 2, and the vacuum drying gaseous outlet 13 of the vacuum drying device 1 is connected with the low-pressure ejector inlet 22 of the ejector device 2.

[0038] In the present embodiment, the kitchen waste after drying is incinerated in the waste incineration device 3, the heat of the hot flue gas generated by the waste incineration device 3 is used to heat the steam boiler 4, and high-pressure steam can be generated. The high-pressure steam enters the high-pressure ejector inlet 21 of the ejector device 2, plays an ejecting and sucking role on the low-pressure ejector inlet 22, sucks the air and water vapor in the vacuum drying device 1, and makes the vacuum drying device 1 generate a vacuum, which can reduce energy consumption compared with using a vacuum pump to generate a vacuum.

[0039] In the present embodiment, the kitchen waste in the vacuum drying device 1 is heated and dried by the heating device 5, and because the kitchen waste is heated in the low pressure of the vacuum drying device 1, the water in the kitchen waste can evaporate at a lower temperature, which can reduce the heating energy consumption compared with conventional heating and drying.

[0040] The ejector device 2 is also called an ejector, which is a device capable of using one high-speed high-energy flow to induce another low-speed low-energy flow. The high-pressure induction inlet 21 of the ejector device 2 is used to introduce a high-speed high-energy flow, such as high-pressure steam. The low-pressure induction inlet 22 of the ejector device 2 is used to induce another low-speed low-energy flow, such as air and water vapor in the vacuum drying device 1. Through the induction suction effect of the ejector device 2, a vacuum environment can be created in the vacuum drying device 1, reducing the temperature required for the evaporation of moisture in the kitchen waste in the vacuum drying device 1.

[0041] Referring to Figure 1 , the kitchen waste treatment system further comprises an air preheater 20, the air preheater 20 has an external air inlet 201, a hot air outlet 202, a steam preheating inlet 203 and a steam preheating outlet 204, the waste incineration device 3 has a preheated air inlet 33, the hot air outlet 202 is connected with the preheated air inlet 33, the steam preheating inlet 203 is connected with the steam outlet 42, and the steam preheating outlet 204 is connected with the high-pressure induction inlet 21. The steam boiler 4 is also provided with a user steam supply port 43.

[0042] In this embodiment, the external air entering the waste incineration device 3 can be preheated through the air preheater 20, and the steam generated by the steam boiler 4 can be supplied to external users through the user steam supply port 43, such as other steam equipment.

[0043] Referring to Figure 1 , the heating device 5 is a heating jacket, which is wrapped outside the vacuum drying device 1, and has a first hot inlet 51 and a waste water outlet 52. Specifically, the heating jacket can be wrapped outside the vacuum drying device 1 for heating the vacuum drying device 1. Because the kitchen waste is in a low-pressure vacuum environment in the vacuum drying device 1, the moisture in the kitchen waste is easy to evaporate. The external hot water enters from the first hot inlet 51, flows through the inside of the heating jacket and then flows out from the waste water outlet 52. The heat of the hot water in the heating jacket is transferred to the vacuum drying device 1, and the kitchen waste therein is evaporated and dewatered.

[0044] Referring to Figure 1 , in this embodiment, the system further comprises a hot water pool 6, the hot water pool 6 has a hot water supply port 61, the hot water supply port 61 is connected with the first hot inlet 51 of the heating jacket, and specifically, the hot water pool 6 is a device for supplying hot water. High-temperature hot water is generated by the hot water pool 6 and used to supply to the heating jacket. In some embodiments, the hot water in the hot water pool 6 can be sourced from the high-temperature hot water generated by the steam boiler 4.

[0045] Referring to Figure 1In the present embodiment, a water pump 7 is further provided between the hot water supply port 61 of the hot water tank 6 and the first hot inlet 51 of the heating jacket. The inlet of the water pump 7 is connected to the hot water supply port 61 of the hot water tank 6 through a pipeline, and the outlet of the water pump 7 is connected to the first hot inlet 51 of the heating jacket through a pipeline. The water pump 7 is used to facilitate the supply of hot water in the hot water tank 6 to the heating jacket.

[0046] As shown in Figure 1 In the present embodiment, the system further comprises a sewage tank 8, which has a sewage inlet 81, and the waste water outlet 52 of the heating jacket is connected to the sewage inlet 81. Specifically, the sewage tank 8 is used to contain the waste water used by the heating jacket. When hot water enters the first hot inlet 51 of the heating jacket, it exchanges heat with the vacuum drying device 1 inside the heating jacket. The temperature of the hot water decreases and cannot be used continuously, and it enters the sewage tank 8 from the waste water outlet 52. In some other embodiments, the used hot water can be connected to the steam boiler 4 through a pipeline, and in the steam boiler 4, the hot water is continuously heated to generate steam, so as to save water.

[0047] Referring to Figure 1 In the present embodiment, the bottom of the sewage tank 8 is provided with a sewage discharge port 82. The sewage in the sewage tank 8 can be discharged through the sewage discharge port 82 at the bottom of the sewage tank 8, so as to clean the sewage tank 8. The sewage in the sewage tank 8 can be treated before being discharged, so as to reduce pollution.

[0048] Embodiment 2

[0049] Referring to Figure 1 The present embodiment is similar to embodiment 1, and the difference lies in that in the present embodiment, the heating jacket has a second hot inlet 53, and the injection outlet 23 of the injection device 2 is connected to the second hot inlet 53 of the heating jacket. Specifically, the injection outlet 23 of the injection device 2 mixes the high-temperature and high-pressure steam generated by the steam boiler 4 and the air and water vapor in the vacuum drying device 1, and the generated gas-liquid mixture still has a certain temperature and can be further used in the heating jacket, thereby reducing the demand for external hot water of the heating jacket and reducing the energy consumption of the kitchen waste dehydration.

[0050] In the present embodiment, the system further comprises a kitchen waste sorting device 9, which has an oil-water outlet 91 and a wet material outlet 92, and the wet material outlet 92 is connected to the vacuum drying inlet 11 of the vacuum drying device 1. Specifically, the kitchen waste sorting device 9 is a device for separating oil-water, large wet materials and residues from kitchen waste. It can adopt the structure disclosed in the prior art, for example, the kitchen waste sorting device 9 disclosed in Chinese patent CN103567216A or the kitchen waste sorting device 9 disclosed in Chinese patent CN111715673A, which can realize the separation of liquid and solid in kitchen waste.

[0051] Or in some embodiments, with reference to Figure 2 , the kitchen waste sorting device 9 can include a container body 96, in which a porous partition plate 97 is arranged. The upper layer of the partition plate 97 contains kitchen waste, and the lower layer of the partition plate 97 can contain the oil-water mixture falling from the kitchen waste. A squeezing mechanism can also be provided on the upper side of the partition plate 97, such as a cylinder 94 driving a squeezing plate 95 to squeeze the kitchen waste, so as to squeeze out the oil and water in the kitchen waste. Through the kitchen waste sorting device 9, the large wet material and the oil-water mixture in the kitchen waste can be separated, so that the large wet material can be further dehydrated and incinerated.

[0052] Embodiment 3

[0053] With reference to Figure 1 , this embodiment is similar to embodiment 1, the difference is that in this embodiment, the kitchen waste treatment system further comprises a biogas fermentation tank 10, the biogas fermentation tank 10 has a feeding port 101 and a biogas outlet 103, the kitchen waste sorting device 9 further comprises a waste residue outlet 93, and the waste incineration device 3 further has a biogas inlet 34, the feeding port 101 is connected with the waste residue outlet 93, and the biogas outlet 103 is connected with the biogas inlet 34. Through the biogas fermentation tank 10, the residual kitchen waste can be further fermented, and the obtained biogas can assist the waste combustion in the waste incineration device 3 or can be used for other purposes, and the calorific value in the kitchen waste can be fully utilized.

[0054] In this embodiment, the biogas fermentation tank 10 further has a liquid phase outlet 102, and the liquid phase outlet 102 is connected with the sewage inlet 81 of the sewage tank 8. Specifically, the biogas fermentation tank 10 will produce fermentation water in the fermentation process, and the fermentation water floats on the upper layer of the biogas fermentation tank 10. By arranging the liquid phase outlet 102 on the upper layer of the biogas fermentation tank 10, the water in the biogas fermentation tank 10 can be discharged.

[0055] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A kitchen waste disposal system characterised in that: The system comprises a vacuum drying device (1), a heating device (5), an ejector device (2), a waste incineration device (3) and a steam boiler (4), the vacuum drying device (1) has a vacuum drying inlet (11), a vacuum drying solid outlet (12) and a vacuum drying gaseous outlet (13), the ejector device (2) has a high-pressure ejector inlet (21), a low-pressure ejector inlet (22) and an ejector outlet (23), the waste incineration device (3) has a waste inlet (31) and a hot flue gas passage (32), the steam boiler (4) has a heating end (41) and a steam outlet (42), the heating device (5) is connected with the vacuum drying device (1), the vacuum drying solid outlet (12) is connected with the waste inlet (31), the hot flue gas passage (32) is connected with the heating end (41), the steam outlet (42) is connected with the high-pressure ejector inlet (21), and the vacuum drying gaseous outlet (13) is connected with the low-pressure ejector inlet (22).

2. The kitchen waste disposal system according to claim 1, wherein: The system further comprises an air preheater (20), the air preheater (20) has an external air inlet (201), a hot air outlet (202), a steam preheating inlet (203) and a steam preheating outlet (204), the waste incineration device (3) has a preheated air inlet (33), the hot air outlet (202) is connected with the preheated air inlet (33), the steam preheating inlet (203) is connected with the steam outlet (42), and the steam preheating outlet (204) is connected with the high-pressure ejector inlet (21), and the steam boiler (4) is further provided with a user steam supply port (43).

3. The kitchen waste disposal system of claim 1, wherein: The heating device (5) is a heating jacket, the heating jacket is wrapped outside the vacuum drying device (1), and the heating jacket has a first heating inlet (51) and a waste water outlet (52).

4. The kitchen waste disposal system of claim 3, wherein: The system further comprises a hot water pool (6), the hot water pool (6) has a hot water supply port (61), and the hot water supply port (61) is connected with the first heating inlet (51).

5. The kitchen waste disposal system of claim 4, wherein: A water pump (7) is further arranged between the hot water supply port (61) and the first heating inlet (51), an inlet of the water pump (7) is connected with the hot water supply port (61) through a pipeline, and an outlet of the water pump (7) is connected with the first heating inlet (51) through a pipeline.

6. The kitchen waste disposal system of claim 5, wherein: The system further comprises a sewage pool (8), the sewage pool (8) has a sewage inlet (81), and the waste water outlet (52) is connected with the sewage inlet (81).

7. The kitchen waste disposal system of claim 3, wherein: The heating jacket has a second heating inlet (53), and the ejector outlet (23) is connected with the second heating inlet (53).

8. The kitchen waste disposal system of claim 6, wherein: The system further comprises a kitchen waste sorting device (9), the kitchen waste sorting device (9) has an oil-water outlet (91) and a wet material outlet (92), and the wet material outlet (92) is connected with the vacuum drying inlet (11).

9. The kitchen waste disposal system of claim 8, wherein: The system further comprises a biogas fermentation tank (10) having a feeding port (101) and a biogas outlet (103), the kitchen garbage sorting device (9) further comprises a waste residue outlet (93), the garbage incineration device (3) further has a biogas inlet (34), the feeding port (101) is connected with the waste residue outlet (93), and the biogas outlet (103) is connected with the biogas inlet (34).

10. The kitchen waste disposal system of claim 9, wherein: The biogas fermentation tank (10) further has a liquid phase outlet (102), and the liquid phase outlet (102) is connected with the sewage inlet (81).

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