Sludge treatment system
By using high-temperature steam to dry the sludge in the sludge treatment system, the problems of high energy consumption and poor equipment safety during the sludge treatment process are solved, and the system energy consumption is reduced and equipment safety is improved.
Patent Information
- Application Number
- CN202421628998.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-10
AI Technical Summary
There are problems of high energy consumption and poor equipment safety during sludge treatment, especially because the ambient air temperature is low, more ambient air is needed to improve the drying effect of sludge, resulting in high energy consumption; and the recycling of drying exhaust gas of incinerators will cause pollutant enrichment and equipment corrosion.
A sludge treatment system is designed, including an incineration device and a sludge dryer, which reduces system energy consumption and prevents equipment corrosion by using high-temperature steam in the superheater to dry the sludge.
It effectively reduces the energy consumption of the sludge treatment system, improves the safety and operation stability of the equipment, and avoids pollutant enrichment and equipment corrosion.
Smart Images
Figure CN222963952U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of sludge treatment, and particularly relates to a sludge treatment system. Background Art
[0002] With the continuous development of urbanization level in China, the urban sewage treatment capacity has been rapidly improved. At the same time, a large amount of sludge is generated during the sewage treatment process in sewage treatment plants. However, there is a serious phenomenon of "emphasizing water and neglecting mud" in this part of sludge. Its moisture content and organic matter are relatively high, its properties are unstable, it is easy to rot and stink, and it contains toxic and harmful substances such as pathogenic bacteria, parasite eggs and heavy metals. If the toxic and harmful substances in this part of sludge cannot be effectively treated, it may lead to serious secondary pollution problems.
[0003] Currently, during the municipal sludge drying and incineration process, the carrier gas sources of sludge dryers mainly include ambient air and drying tail gas. Among them, ambient air is more widely used. However, the temperature of ambient air is relatively low, and its moisture-carrying capacity is limited. A large amount of ambient air, that is, more energy consumption, is required to improve the sludge drying effect, which results in a relatively high cost of sludge treatment. And the drying tail gas of the incinerator contains hydrogen sulfide, ammonia, etc. Long-term recycling will cause pollutant enrichment, and the impurities and moisture contained in the drying tail gas will condense in the pipeline, leading to equipment safety problems such as pipeline corrosion, thus affecting the operation stability of the entire system. Utility Model Content
[0004] The purpose of the embodiments of this application is to provide a sludge treatment system, which can solve the problems of relatively high energy consumption and poor equipment safety in the current sludge treatment process.
[0005] In order to solve the above technical problems, this application is implemented as follows:
[0006] This application provides a sludge treatment system, including:
[0007] An incineration device, the incineration device includes a device main body and a superheater, and the superheater is arranged inside the device main body;
[0008] A sludge dryer, the sludge dryer includes a housing and a stirring member. The housing forms a receiving cavity for receiving sludge. The discharge port of the receiving cavity is communicated with the feed port of the device main body. The stirring member is rotatably arranged inside the receiving cavity. At least one of the housing and the stirring member is provided with a heating cavity, and the steam inlet of the heating cavity is communicated with the steam outlet of the superheater.
[0009] In an embodiment of the present application, the sludge dryer includes a housing and a stirring member. The housing is provided with a receiving cavity for accommodating highly liquid-containing sludge. The discharge port of the receiving cavity is communicated with the feed port of the device main body of the incineration device. The stirring member is rotatably arranged in the receiving cavity. At least one of the housing and the stirring member is provided with a heating cavity. The steam inlet of the heating cavity is communicated with the steam discharge port of the superheater of the incineration device, so that the steam in the superheater is introduced into the heating cavity of the sludge dryer for drying the sludge. Since the steam in the superheater has a relatively high temperature and no additional heating is required, this is beneficial to reducing the energy consumption of the system. At the same time, the steam in the superheater has a relatively high cleanliness and does not contain corrosive gases such as hydrogen sulfide and ammonia. Therefore, it can prevent the sludge treatment system from being polluted and corroded, which can improve the safety of the equipment and thus enhance the operating stability of the entire system. Description of the Drawings
[0010] Figure 1 is a schematic structural diagram of the sludge treatment system disclosed in an embodiment of the present application;
[0011] Figure 2 is a schematic structural diagram of the sludge treatment system disclosed in another embodiment of the present application.
[0012] Description of the Reference Numerals:
[0013] 100 - Incineration device, 110 - Device main body, 111 - Feed port of the device main body, 120 - Superheater, 121 - Steam discharge port of the superheater, 122 - Liquid inlet of the superheater, 130 - Heat exchange device, 140 - First fan, 150 - Second pipeline, 151 - Second switching valve, 160 - Third pipeline, 161 - Third switching valve, 170 - Temperature detection member;
[0014] 200 - Sludge dryer, 210 - Housing, 211 - Discharge port of the receiving cavity, 212 - Steam inlet of the heating cavity, 213 - Air inlet of the receiving cavity, 214 - Steam discharge port of the receiving cavity, 215 - Liquid discharge port of the heating cavity, 216 - Feed port of the housing, 220 - Stirring member, 221 - Rotating shaft, 222 - Helical blade;
[0015] 310 - Heating member, 320 - First pipeline, 321 - First switching valve, 330 - Flue gas treatment device, 340 - Sewage treatment device, 350 - Discharge conveying device, 360 - Water collection tank, 370 - Water pump;
[0016] 400 - Exhaust gas treatment device, 410 - Condenser, 411 - Steam inlet of the condenser, 412 - Exhaust port of the condenser, 413 - Housing, 413a - First sewage discharge port, 414 - Condensing pipe, 414a - Cold source inlet, 414b - Cold source outlet, 420 - Second fan, 430 - Dust collector, 431 - Steam inlet of the dust collector, 432 - Exhaust port of the dust collector. Detailed implementation manners
[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.
[0018] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.
[0019] The sludge treatment system provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings, through specific embodiments and their application scenarios.
[0020] As Figures 1 to 2 shown, an embodiment of the present application discloses a sludge treatment system, which includes an incineration device 100 and a sludge dryer 200. Optionally, the sludge treatment system can also be applied to other fields, such as for treating high-liquid-content materials in oil and gas exploitation.
[0021] The incineration device 100 includes a device main body 110 and a superheater 120, and the superheater 120 is arranged inside the device main body 110.
[0022] The sludge dryer 200 includes a housing 210 and a stirring member 220. The housing 210 forms a receiving cavity for receiving sludge. The housing 210 is provided with a feed port 216, and the high-liquid-content sludge enters the receiving cavity through the feed port 216. The discharge port 211 of the receiving cavity is communicated with the feed port 111 of the device main body 110 to send the low-liquid-content sludge into the incineration device 100 for incineration. The stirring member 220 is rotatably arranged in the receiving cavity of the housing 210. The stirring member 220 is used to drive the sludge in the receiving cavity so that the dried sludge can be quickly discharged. That is to say, the sludge in the receiving cavity is movable. It enters the receiving cavity through the feed port 216, is dried at high temperature, and then is discharged from the discharge port 211.
[0023] At least one of the housing 210 and the stirring member 220 is provided with a heating chamber. That is, only the housing 210 can be provided with a heating chamber, only the stirring member 220 can be provided with a heating chamber, or both the housing 210 and the stirring member 220 can be provided with a heating chamber. The embodiments of the present application do not make specific limitations in this regard. The steam inlet 212 of the heating chamber is connected to the steam outlet 121 of the superheater 120, so that the steam in the superheater 120 is introduced into the heating chamber of the sludge dryer 200 for drying the sludge. Since the steam in the superheater 120 has a relatively high temperature and does not require additional heating, this helps to reduce the energy consumption of the system. At the same time, the steam in the superheater 120 has a relatively high cleanliness and does not contain corrosive gases such as hydrogen sulfide and ammonia. Therefore, it can prevent the sludge treatment system from being polluted and corroded, which can improve the safety of the equipment and thus enhance the operating stability of the entire system. Therefore, the embodiments of the present application can solve the problems of relatively high energy consumption and poor safety of equipment existing in the current sludge treatment process. The equipment here specifically refers to the various components of the sludge treatment system.
[0024] Optionally, the steam introduced into the heating chamber of the sludge dryer 200 can be saturated steam or low-pressure superheated steam. The embodiments of the present application do not make specific limitations in this regard. Further optionally, the steam in the heating chamber of the sludge dryer 200 can preferably be saturated steam, specifically saturated steam at 0.5 MPA.G.
[0025] Optionally, the sludge dryer 200 can be a disk dryer, a paddle dryer, a screw dryer, a thin-layer dryer, etc. The embodiments of the present application do not make specific limitations in this regard. Further optionally, the sludge dryer 200 can preferably be a disk dryer.
[0026] In an alternative embodiment, the sludge treatment system further includes a heating member 310 and a first pipeline 320. One end of the first pipeline 320 is connected to the air inlet 213 of the accommodation chamber of the sludge dryer 200. A first switching valve 321 is provided on the first pipeline 320. The heating member 310 is provided on the first pipeline 320, and the heating member 310 is located downstream of the first switching valve 321. Ambient air enters the first pipeline 320. The heating member 310 heats the ambient air in the first pipeline 320 by heat transfer and then introduces it into the accommodation chamber of the sludge dryer 200 to directly contact the sludge, while the steam in the heating chamber heats the sludge by indirect heating. This solution dries the sludge by combining direct air drying and indirect heating, thereby improving the efficiency of drying the sludge. Of course, the heating member 310 and the first pipeline 320 can also not be provided, and the sludge can be heated only by the steam in the heating chamber.
[0027] It should be noted that in the above solution, a fan can be used to send ambient air into the first pipeline 320 to accelerate the flow rate of the ambient air, thereby improving the efficiency of air drying and heating the sludge.
[0028] In a further optional embodiment, the device main body 110 includes an incineration chamber and a heat exchange chamber which are arranged at intervals. Optionally, the device main body 110 may further include a heating chamber which is communicated between the incineration chamber and the heat exchange chamber. Specifically, the incineration chamber may be an incinerator for incinerating low-liquid-content materials such as garbage. Specifically, the heating chamber may be a waste heat boiler. The superheater 120 may be arranged in the waste heat boiler. The heat inside the waste heat boiler is used to heat the superheater 120 to generate saturated steam, and the saturated steam in the superheater 120 is heated into superheated steam, thereby improving the work capacity of the steam.
[0029] The incineration device 100 further includes a heat exchange device 130, a first fan 140, a second pipeline 150 and a third pipeline 160. The heat exchange device 130 is arranged in the heat exchange chamber. The air inlet of the heat exchange device 130 is communicated with the exhaust port of the first fan 140. The first fan 140 is used to send ambient air into the heat exchange device 130. Optionally, the heat exchange device 130 may be an air preheater, and the hot air temperature generated by the heat exchange device 130 may be 150-200 °C, preferably 180 °C. Optionally, the heat exchange device 130 may be heated by means of electric heating, steam heating, etc., and preferably by means of electric heating.
[0030] The second pipeline 150 is communicated between the exhaust port of the heat exchange device 130 and the air inlet of the incineration chamber. The ambient air in the heat exchange device 130 is indirectly heated by the steam in the heat exchange chamber, and after being heated and raised in temperature, it enters the incineration chamber for combustion support. The temperature difference between the heat-exchanged gas and the incineration chamber is small, which is beneficial to improving the combustion stability in the incineration chamber. A second switching valve 151 is arranged on the second pipeline 150. The third pipeline 160 is communicated between the exhaust port of the heat exchange device 130 and the first pipeline 320. The connection point of the third pipeline 160 and the first pipeline 320 is located between the first switching valve 321 and the heating element 310. A third switching valve 161 is arranged on the third pipeline 160.
[0031] When the incineration device 100 is in the first state, the second switching valve 151 is opened and the third switching valve 161 is closed. At this time, all the ambient air heated by heat exchange in the heat exchange device 130 enters the incineration chamber for combustion support. Both the first switching valve 321 and the heating element 310 can be opened, and the ambient air introduced through the first pipeline 320 is used to dry the sludge. When the incineration device 100 is in the second state, both the second switching valve 151 and the third switching valve 161 are opened. That is, a part of the ambient air heated by heat exchange in the heat exchange device 130 enters the incineration chamber for combustion support, and the other part sequentially passes through the third pipeline 160 and the first pipeline 320 to directly contact the sludge in the accommodation cavity to heat and dry the sludge. In this solution, the ambient air heated by heat exchange in the heat exchange device 130 is used to air-dry the sludge. Since the temperature of this part of the ambient air is relatively high and there is no need to heat it additionally through the heating element 310, the power consumption of the entire device can be saved. Of course, the third pipeline 160 can also be not provided, and the ambient air heated by heat exchange in the heat exchange device 130 is only used to be introduced into the incineration chamber for combustion support.
[0032] Optionally, when the ambient air heated by heat exchange enters the first pipeline 320 and the temperature of this part of the ambient air is relatively low due to heat dissipation or low heat exchange efficiency, etc., it can be reheated through the heating element 310 to improve the efficiency of heating and drying the sludge.
[0033] In an optional embodiment, the sludge treatment system further includes a temperature detection element 170 and a control element. The temperature detection element 170 is arranged on the incineration chamber and is used to detect the temperature inside the incineration chamber. The control element is electrically connected to the temperature detection element 170, the second switching valve 151, and the third switching valve 161. The control element is used to adjust the opening degrees of the second switching valve 151 and the third switching valve 161 according to the detection value of the temperature detection element 170. When the temperature detection element 170 detects that the temperature inside the incineration chamber is lower than the first preset value, the opening degree of the second switching valve 151 and the fuel supplement amount can be increased, and the opening degree of the third switching valve 161 can be decreased to ensure the sludge incineration efficiency inside the incineration chamber. When the temperature detection element 170 detects that the temperature inside the incineration chamber is higher than the second preset value, the opening degree of the second switching valve 151 and the fuel supplement amount can be decreased, and the opening degree of the third switching valve 161 can be increased to avoid damage to the equipment due to long-term exposure to high temperatures. This solution associates the temperature detection element 170 with the second switching valve 151 and the third switching valve 161 to achieve linkage control, thereby dynamically adjusting the temperature inside the incineration chamber to ensure the operation stability of the entire sludge treatment system and the safety of the equipment. Of course, the opening degrees of the second switching valve 151 and the third switching valve 161 can also be controlled separately.
[0034] It should be noted that the above first preset value is less than the second preset value.
[0035] In another alternative embodiment, the sludge treatment system further includes a flue gas treatment device 330. Optionally, the exhaust port of the device main body 110 may be connected only to the flue gas treatment device 330, that is, the flue gas discharged from the device main body 110 can directly enter the flue gas treatment device 330 for treatment and then be discharged after reaching the emission standard, so as to prevent the direct discharge of this part of the flue gas from polluting the environment; or, in other embodiments, the exhaust port of the device main body 110 is respectively connected to the air inlet 213 of the accommodation chamber and the flue gas treatment device 330, that is, part of the high-temperature flue gas discharged from the device main body 110 enters the flue gas treatment device 330 for treatment, and the other part enters the accommodation chamber of the sludge dryer 200 and directly contacts the sludge to be used for heating and drying the sludge. This solution utilizes the high-temperature flue gas in the incineration device 100 to dry the sludge, realizing the recycling of the high-temperature flue gas, thereby saving the energy consumption of the sludge treatment system.
[0036] Optionally, the exhaust port of the device main body 110 in the above embodiment may be opened in the heat exchange chamber and is located downstream of the heat exchange device 130. The high-temperature flue gas generated in the incineration chamber first passes through the superheater 120 for heat exchange, and then passes through the heat exchange device 130 for heat exchange to realize the recycling of the waste heat of the high-temperature flue gas. The cooled high-temperature flue gas is introduced into the accommodation chamber of the sludge dryer 200 to heat and dry the sludge.
[0037] In yet another alternative embodiment, the sludge treatment system further includes an exhaust gas treatment device 400. The steam inlet of the exhaust gas treatment device 400 is connected to the exhaust steam port 214 of the accommodation chamber, and the exhaust port of the exhaust gas treatment device 400 is connected to the air inlet of the device main body 110. During the process of drying the sludge by the sludge dryer 200, high-temperature tail gas will inevitably be generated. This part of the high-temperature tail gas is discharged into the exhaust gas treatment device 400 through the exhaust steam port 214 of the accommodation chamber for treatment, and then enters the incineration device 100 for combustion support. This solution treats the high-temperature tail gas in the accommodation chamber of the sludge dryer 200 through the exhaust gas treatment device 400 and then introduces it into the incineration device 100 for combustion support to achieve recycling, which is beneficial to saving the energy consumption of the sludge treatment system. Of course, the high-temperature tail gas can also be directly discharged after being treated to meet the standards by the exhaust gas treatment device 400.
[0038] Optionally, the above high-temperature tail gas may be a mixed gas formed by ambient air entering through the air inlet 213 of the accommodation chamber and non-condensable gas after condensation.
[0039] In a further optional embodiment, the exhaust gas treatment device 400 includes a condenser 410 and a second fan 420. The steam inlet 411 of the condenser 410 is communicated with the steam outlet 214 of the accommodation chamber. The exhaust port 412 of the condenser 410 is communicated with the air inlet of the second fan 420. The condenser 410 is used to remove water vapor in the high-temperature tail gas. The exhaust port of the second fan 420 is communicated with the air inlet of the device main body 110. The second fan 420 is used to send the dry gas treated by the condenser 410 into the incineration chamber of the incineration device 100. In this solution, the condenser 410 removes the water vapor in the high-temperature tail gas to convert it into dry gas, thereby improving the combustion-supporting performance of this part of the gas.
[0040] Optionally, the condenser 410 includes a housing 413 and a condensing pipe 414. The condensing pipe 414 is arranged in the inner cavity of the housing 413. Both the cold source inlet 414a and the cold source outlet 414b of the condensing pipe 414 pass through the housing 413 and extend outside the inner cavity, so as to be respectively communicated with the cold source. A first sewage discharge port 413a is provided at the bottom of the housing 413. The first sewage discharge port 413a is used to be communicated with the sewage treatment device 340. After the high-temperature tail gas enters the inner cavity of the housing 413, the water vapor in the high-temperature tail gas is condensed into liquid water through the condensing pipe 414. At the same time, the impurities in the high-temperature tail gas are gathered at the bottom of the housing 413 together with the liquid water and discharged to the sewage treatment device 340 through the first sewage discharge port 413a.
[0041] In an optional embodiment, the exhaust gas treatment device 400 further includes a dust collector 430 and a heat preservation member. The steam inlet 431 of the dust collector 430 is communicated with the steam outlet 214 of the accommodation chamber. The exhaust port 432 of the dust collector 430 is communicated with the steam inlet 411 of the condenser 410. The heat preservation member is sleeved on the dust collector 430 and is used to keep the high-temperature tail gas in the dust collector 430 warm, so as to avoid the condensation of water vapor in the high-temperature tail gas in the dust collector 430 and ensure the dust removal efficiency. Optionally, the dust collector 430 can specifically adopt methods such as cyclone type and spray type for dust removal.
[0042] The bottom of the dust collector 430 is provided with a second sewage discharge port. The sludge treatment system further includes a discharge conveying device 350. The second sewage discharge port is communicated with the discharge conveying device 350, and the discharge conveying device 350 is respectively communicated with the discharge port 211 of the accommodating cavity and the feed port 111 of the device main body 110. The dust and impurities in the high-temperature tail gas are removed by the dust collector 430, so as to avoid blocking the downstream equipment, such as the condenser 410, pipelines, etc., thereby prolonging the service life of the waste gas treatment device 400. Moreover, the second sewage discharge port at the bottom of the dust collector 430 is communicated with the discharge conveying device 350, so that the sludge collected inside the dust collector 430 is conveyed into the discharge conveying device 350, and then conveyed to the incineration device 100 for incineration treatment, which is beneficial to improving the environmental protection of the sludge treatment system. Of course, the sludge collected in the dust collector 430 can also be directly discharged through the second sewage discharge port.
[0043] In another optional embodiment, the sludge treatment system further includes a water collecting tank 360 and a water pump 370. The water collecting tank 360 is communicated with the liquid discharge port 215 of the heating cavity. The water pump 370 is arranged inside the water collecting tank 360, and the liquid discharge port of the water pump 370 is communicated with the liquid inlet 122 of the superheater 120 to form a water vapor circulation loop. The steam inside the superheater 120 enters the heating cavity for heat exchange, and is converted into liquid water and discharged from the liquid discharge port 215 of the heating cavity to the superheater 120. This solution improves the utilization rate of the steam inside the superheater 120 through the water vapor circulation loop. Of course, the liquid discharge port 215 of the heating cavity can also directly discharge this part of the liquid.
[0044] In an optional embodiment, the liquid discharge port 215 of the heating cavity of the sludge dryer 200 is communicated with the liquid inlet 122 of the superheater 120. The stirring member 220 includes a rotating shaft 221 and a spiral blade 222. The rotating shaft 221 is rotatably arranged in the outer shell 210, the spiral blade 222 is sleeved on the rotating shaft 221, and both the rotating shaft 221 and the spiral blade 222 are provided with heating cavities, and the heating cavity of the rotating shaft 221 is communicated with the heating cavity of the spiral blade 222. The outer shell 210 and the heating cavity of the rotating shaft 221 are both provided with a steam inlet 212 and a liquid discharge port 215. The sludge in the accommodating cavity is discharged from the discharge port 211 under the drive of the spiral blade 222. At the same time, the steam in the heating cavities of the outer shell 210, the rotating shaft 221, and the spiral blade 222 heats the sludge by heat transfer, so as to dry the sludge. This solution adopts such a stirring member 220, which has a large heat dissipation area and is beneficial to improving the thermal drying efficiency of the sludge. Of course, the spiral blade 222 can also be replaced with a structure such as a fan blade.
[0045] Optionally, the number of at least one of the steam inlet 212 and the liquid discharge port 215 of the heating cavity can be at least two to improve the steam flow rate, and further improve the heat exchange efficiency of the sludge dryer 200.
[0046] Based on the sludge drying system disclosed in the embodiments of the present application, taking a single sludge dryer 200 treating 100 t / d of sludge with the water content reduced from 80% to 40% as an example, with the steam cost calculated at 300 yuan / t and the annual operating time of 330 days, it can be seen from the following table that this can greatly save the cost of sludge drying.
[0047]
[0048] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.
Claims
1. A sludge treatment system, characterized in that: include: An incineration device (100), the incineration device (100) comprising a device body (110) and a superheater (120), wherein the superheater (120) is arranged in the device body (110); A sludge dryer (200), the sludge dryer (200) comprising a shell (210) and a stirring member (220), the shell (210) forming a receiving chamber for receiving sludge, the discharge port (211) of the receiving chamber being connected to the feed port (111) of the device body (110), the stirring member (220) being rotatably arranged in the receiving chamber, at least one of the shell (210) and the stirring member (220) being provided with a heating chamber, the steam inlet (212) of the heating chamber being connected to the steam exhaust port (121) of the superheater (120).
2. The sludge treatment system according to claim 1, characterized in that: The sludge treatment system further comprises a heating element (310) and a first pipeline (320), one end of the first pipeline (320) being connected to the air inlet (213) of the accommodating chamber, a first switch valve (321) being arranged on the first pipeline (320), the heating element (310) being arranged on the first pipeline (320), and the heating element (310) being located downstream of the first switch valve (321).
3. The sludge treatment system according to claim 2, characterized in that: The device body (110) comprises an incineration chamber and a heat exchange chamber which are arranged at intervals. The incineration device (100) further comprises a heat exchange device (130), a first fan (140), a second pipeline (150) and a third pipeline (160). The heat exchange device (130) is arranged in the heat exchange chamber. The air inlet of the heat exchange device (130) is connected to the exhaust port of the first fan (140). The second pipeline (150) is connected to the exhaust port of the heat exchange device (130). The third pipeline (160) is connected between the exhaust port of the heat exchange device (130) and the first pipeline (320), and the connection between the third pipeline (160) and the first pipeline (320) is located between the first switch valve (321) and the heating element (310). The third pipeline (160) is provided with a third switch valve (161). When the incineration device (100) is in the first state, the second switch valve (151) is opened and the third switch valve (161) is closed; When the incineration device (100) is in the second state, the second switch valve (151) and the third switch valve (161) are both opened.
4. The sludge treatment system according to claim 3, characterized in that: The sludge treatment system further comprises a temperature detection component (170) and a control component. The temperature detection component (170) is arranged on the incineration chamber and is used to detect the temperature inside the incineration chamber. The control component is electrically connected to the temperature detection component (170), the second switch valve (151) and the third switch valve (161). The control component is used to adjust the opening of the second switch valve (151) and the opening of the third switch valve (161) according to the detection value of the temperature detection component (170).
5. The sludge treatment system according to claim 1, characterized in that: The sludge treatment system further comprises a flue gas treatment device (330), and the exhaust port of the device body (110) is respectively connected to the air inlet (213) of the accommodating chamber and the flue gas treatment device (330).
6. The sludge treatment system according to claim 1, characterized in that: The sludge treatment system also includes a waste gas treatment device (400), the steam inlet of the waste gas treatment device (400) is connected to the steam exhaust port (214) of the accommodating chamber, and the exhaust port of the waste gas treatment device (400) is connected to the air inlet of the device body (110).
7. The sludge treatment system according to claim 6, characterized in that: The exhaust gas treatment device (400) comprises a condenser (410) and a second fan (420), wherein a steam inlet (411) of the condenser (410) is connected to a steam exhaust port (214) of the accommodating chamber, an exhaust port (412) of the condenser (410) is connected to an air inlet of the second fan (420), and an exhaust port of the second fan (420) is connected to an air inlet of the device body (110). The condenser (410) comprises a shell (413) and a condenser tube (414); the condenser tube (414) is arranged in the inner cavity of the shell (413); a cold source inlet (414a) and a cold source outlet (414b) of the condenser tube (414) both pass through the shell (413) and extend outside the inner cavity; a first sewage outlet (413a) is provided at the bottom of the shell (413); the first sewage outlet (413a) is used to communicate with a sewage treatment device (340).
8. The sludge treatment system according to claim 7, characterized in that: The exhaust gas treatment device (400) further comprises a dust collector (430) and a heat preservation component, wherein the steam inlet (431) of the dust collector (430) is connected to the steam exhaust port (214) of the accommodating chamber, and the steam exhaust port (432) of the dust collector (430) is connected to the steam inlet (411) of the condenser (410); the heat preservation component is sleeved on the dust collector (430); a second sewage outlet is provided at the bottom of the dust collector (430); the sludge treatment system further comprises a discharge conveying device (350); the second sewage outlet is connected to the discharge conveying device (350); and the discharge conveying device (350) is respectively connected to the discharge port (211) of the accommodating chamber and the feed port (111) of the device body (110).
9. The sludge treatment system according to claim 1, characterized in that: The sludge treatment system further comprises a water collecting tank (360) and a water pump (370); the water collecting tank (360) is connected to the liquid discharge port (215) of the heating chamber; the water pump (370) is arranged in the water collecting tank (360); and the liquid discharge port of the water pump (370) is connected to the liquid inlet (122) of the superheater (120).
10. The sludge treatment system according to claim 1, characterized in that: The liquid discharge port (215) of the heating chamber is communicated with the liquid inlet (122) of the superheater (120); the stirring member (220) comprises a rotating shaft (221) and a spiral blade (222); the rotating shaft (221) is rotatably disposed on the outer shell (210); the spiral blade (222) is sleeved on the rotating shaft (221); the rotating shaft (221) and the spiral blade (222) are both provided with the heating chamber, and the heating chamber of the rotating shaft (221) is communicated with the heating chamber of the spiral blade (222); the heating chamber of the outer shell (210) and the heating chamber of the rotating shaft (221) are both provided with the steam inlet (212) and the liquid discharge port (215).