Resource recycling system for garbage power plant and sewage treatment plant
By designing a resource recycling system that uses waste steam drying sewage treatment plants to waste waste of waste power plants, the problem of waste resource waste in waste power plants and sewage treatment plants is solved, and efficient drying of sludge and recycling of resources is achieved.
Patent Information
- Application Number
- CN202411960964.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-02-25
AI Technical Summary
Waste power plants and sewage treatment plants have problems of waste resources during operation, including the fact that the steam discharged during boiler start-up and the steam after flashing cannot be effectively utilized, and the drying of sludge requires a large amount of additional energy.
A resource recycling system is designed to dry the wet sludge discharged from the sewage treatment plant using the steam wasted by the waste power plant, and the contact between steam and sludge is dried through the drying box and steam pipe in the sludge drying device, and the mixing mechanism and the enhancement mechanism are used to improve the drying efficiency.
Effectively utilize the waste steam in waste power plants, reduce energy waste, realize the reduction and harmless treatment of sludge, protect the environment, reduce resource waste, and increase economic benefits.
Smart Images
Figure CN119508798A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of resource recycling, and in particular to a resource recycling system for a garbage power plant and a sewage treatment plant. Background Art
[0002] In waste-to-energy plants, during the boiler startup process, because the parameters of the main steam do not meet the conditions for steam generation, it is often discharged directly into the atmosphere through the fire exhaust device, resulting in a waste of resources.
[0003] During the operation of garbage power plants, high requirements are placed on the quality of steam and water. Continuous and periodic blowdown devices are usually installed to control the salt content in boiler water within a normal range. The continuous and periodic blowdown devices send the discharged boiler water to the continuous blowdown expansion tank and the periodic blowdown expansion tank for expansion and flash evaporation. The steam after flash evaporation is often directly discharged into the atmosphere, resulting in a waste of resources.
[0004] At the same time, sewage treatment plants produce a large amount of wet sludge after sewage treatment. The previous disposal method was generally direct landfill, which brought great pollution risks to the environment. With the rise of sludge incineration technology in recent years, sludge has found a better way to treat sludge by incinerating it to achieve volume reduction and harmlessness. However, due to the high water content of wet sludge, a large amount of additional energy is usually required to dry the sludge so that it can meet the conditions for incineration in the furnace.
[0005] Therefore, how to comprehensively utilize the resources of waste-to-energy plants and sewage treatment plants to reduce resource waste is an issue that needs to be addressed urgently. Summary of the invention
[0006] In view of the defects in the prior art, the purpose of the present invention is to provide a resource recycling system for a waste power plant and a sewage treatment plant, which can effectively utilize the resources of the waste power plant and the sewage treatment plant and reduce the waste of resources.
[0007] In order to achieve the above-mentioned object, the present invention is implemented through the following technical solutions: a garbage power plant and sewage treatment plant resource recycling system, including a garbage power plant, a sludge drying device and a sewage treatment plant;
[0008] The waste power plant comprises a boiler, a fire-generating and exhausting device, a continuous blowdown expansion tank and a periodic blowdown expansion tank, the inlet of the fire-generating and exhausting device is connected to the steam collecting tank of the boiler, the inlet of the continuous blowdown expansion tank is connected to the continuous blowdown pipe of the waste power plant, and the inlet of the periodic blowdown expansion tank is connected to the periodic blowdown pipe of the waste power plant;
[0009] The gas inlet of the sludge drying device is connected to the outlet of the fire exhaust device, the outlet of the continuous blowdown expansion tank and the outlet of the periodic blowdown expansion tank;
[0010] The sewage outlet of the sewage treatment plant is communicated with the sludge inlet of the sludge drying device.
[0011] Furthermore, the discharge port of the sludge drying device is communicated with the incineration chamber of the boiler.
[0012] Furthermore, the sludge drying device includes a drying box and a steam pipe, the sludge inlet is formed at the top of the drying box, the discharge port is formed at the first end of the drying box, a baffle is provided at the discharge port, the baffle is plugged into the drying box, the steam pipe is fixedly installed on the inner wall of the drying box, and a plurality of nozzles are fixedly installed on the steam pipe.
[0013] Furthermore, the sludge drying device further comprises a stirring mechanism, and the stirring mechanism comprises a guide rail, a moving plate, a disc, a first motor and a driving assembly;
[0014] The guide rail is fixedly installed on the top of the drying box, the movable plate is arranged on the guide rail and is slidably connected to the guide rail, the disc is arranged below the movable plate and is rotatably connected to the movable plate, a plurality of stirring blades are fixedly installed on the bottom of the disc, and the plurality of stirring blades are arranged at intervals along the circumference of the disc, the first motor is used to control the rotation of the disc, and the driving assembly is used to control the movement of the movable plate on the guide rail.
[0015] Furthermore, the driving assembly includes a lead screw and a second motor, the lead screw passes through the movable plate and both ends are rotatably connected to the drying box, the lead screw is threadedly connected to the movable plate, and the second motor is used to control the rotation of the lead screw.
[0016] Furthermore, there are two steam pipes, which are respectively arranged on both sides of the drying box.
[0017] Furthermore, the sludge drying device also includes a lifting mechanism, which includes a base plate and a cylinder. The base plate is arranged below the drying box, the base plate is rotatably connected to the first end of the drying box, the cylinder body of the cylinder is hinged to the base plate, and the piston rod of the cylinder is hinged to the second end of the drying box.
[0018] Beneficial effects of the invention: The invention provides a waste power plant and sewage treatment plant resource recycling system, which utilizes the steam wasted in the waste power plant to dry the sludge discharged from the sewage treatment plant. While avoiding a large amount of energy waste in the waste power plant, the sludge in the sewage treatment plant is reduced and harmlessly treated, which not only protects the environment, but also reduces the waste of resources and increases economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a flow chart of the present invention;
[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the sludge drying device in the first perspective;
[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the sludge drying device at a second viewing angle;
[0022] Figure 4 This is a schematic diagram of the front view of the sludge drying device.
[0023] Figure numerals: 10-garbage power plant, 11-fire and steam exhaust device, 12-continuous sewage expansion container, 13-periodic sewage expansion container, 20-sludge drying device, 21-drying box, 22-steam pipe, 23-baffle, 24-slot, 25-nozzle, 30-wastewater treatment plant, 40-stirring mechanism, 41-guide rail, 42-movable plate, 43-disc, 44-first motor, 45-drive assembly, 451-screw, 452-second motor, 50-lifting mechanism, 51-bottom plate, 52-cylinder. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0025] In this application, unless otherwise clearly specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0027] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.
[0028] like Figure 1-Figure 4 As shown, the present invention provides a waste power plant and sewage treatment plant resource recycling system, including a waste power plant 10, a sludge drying device 20, a sewage treatment plant 30 and a control cabinet.
[0029] The garbage power plant 10 includes a boiler, a fire-generating and exhausting device 11, a continuous blowdown expansion tank 12, and a periodic blowdown expansion tank 13. The inlet of the fire-generating and exhausting device 11 is connected to the steam collecting tank of the boiler. The inlet of the continuous blowdown expansion tank 12 is connected to the continuous blowdown pipe of the garbage power plant 10. The inlet of the periodic blowdown expansion tank 13 is connected to the periodic blowdown pipe of the garbage power plant 10.
[0030] The gas inlet of the sludge drying device 20 is connected to the outlet of the fire-generating and exhausting device 11 , the outlet of the continuous sewage expansion container 12 , and the outlet of the periodic sewage expansion container 13 .
[0031] The sewage outlet of the sewage treatment plant 30 is communicated with the sludge inlet of the sludge drying device 20 .
[0032] When the system is in operation, on the one hand, the steam discharged from the steam collecting box of the boiler enters the sludge drying device 20 after passing through the fire exhaust device 11; on the other hand, the boiler water discharged from the garbage power plant 10 is respectively sent to the continuous blowdown expansion tank 12 and the periodic blowdown expansion tank 13 for expansion and flash evaporation, and the steam after flash evaporation enters the sludge drying device 20. At this time, the wet sludge discharged from the sewage treatment plant 30 enters the sludge drying device 20, and the water evaporates to form dry sludge after contacting with the steam.
[0033] The present invention utilizes the steam wasted by the garbage power plant 10 to dry the sludge discharged from the sewage treatment plant 30, thereby avoiding a large amount of energy waste in the garbage power plant 10 and reducing and harmlessly treating the sludge in the sewage treatment plant 30, thereby protecting the environment, reducing the waste of resources, and increasing economic benefits.
[0034] In one embodiment, the discharge port of the sludge drying device 20 is connected to the combustion chamber of the boiler.
[0035] In this way, the dry sludge generated by the sludge drying device 20 will be returned to the incineration chamber of the boiler for incineration and power generation, thus forming a recycling of resources and further saving resources.
[0036] In one embodiment, the sludge drying device 20 includes a drying box 21 and a steam pipe 22. A sludge inlet is formed at the top of the drying box 21, and a discharge port is formed at the first end of the drying box 21. A baffle 23 is provided at the discharge port, and the baffle 23 is plugged into the drying box 21. Specifically, a slot 24 is provided at the discharge port of the drying box 21, and the baffle 23 is inserted into the slot 24 to close the discharge port. The steam pipe 22 is fixedly mounted on the inner wall of the drying box 21, and a plurality of nozzles 25 are fixedly mounted on the steam pipe 22. The first end of the nozzle 25 is connected to the steam pipe 22, and the second end of the nozzle 25 is tilted downward in a direction close to the middle of the drying box 21.
[0037] The wet sludge enters the drying box 21 through the sludge inlet, and the steam enters the steam pipe 22 through the gas inlet, and is then sprayed out through a plurality of nozzles 25 to quickly dry the wet sludge.
[0038] In one embodiment, the sludge drying device 20 further includes a stirring mechanism 40 , and the stirring mechanism 40 includes a guide rail 41 , a moving plate 42 , a disc 43 , a first motor 44 and a driving assembly 45 .
[0039] The guide rail 41 is fixedly installed on the top of the drying box 21 in the horizontal direction. The movable plate 42 is arranged on the guide rail 41 and is slidably connected to the guide rail 41. The disc 43 is arranged below the movable plate 42 and is rotatably connected to the movable plate 42. A plurality of stirring blades are fixedly installed at the bottom of the disc 43, and the plurality of stirring blades are arranged in sequence at equal intervals along the circumference of the disc 43. The first motor 44 is fixedly installed on the movable plate 42 and is used to control the rotation of the disc 43. The first motor 44 is electrically connected to the control cabinet. The driving assembly 45 is used to control the movable plate 42 to move on the guide rail 41.
[0040] When the sludge drying device 20 is drying the wet sludge, the control cabinet controls the first motor 44 to start, and the first motor 44 drives the disc 43 and the multiple stirring blades to rotate, and cooperates with the action of the driving component 45 to stir the wet sludge in the entire drying box 21, so that the wet sludge below is turned up and contacts with the steam, thereby improving the drying efficiency of the wet sludge.
[0041] In one embodiment, the driving assembly 45 includes a lead screw 451 and a second motor 452. The lead screw 451 passes through the moving plate 42, and both ends are rotatably connected to the drying box 21, and the lead screw 451 is threadedly connected to the moving plate 42. The second motor 452 is fixedly mounted on the drying box 21, and the second motor 452 is electrically connected to the control cabinet to control the rotation of the lead screw 451.
[0042] When the driving assembly 45 is working, the control cabinet controls the second motor 452 to start, and the second motor 452 drives the lead screw 451 to rotate. Under the action of the guide rail 41, the movable plate 42 moves left and right, so that the stirring mechanism 40 can stir the wet sludge in the entire drying box 21.
[0043] The driving assembly 45 has a simple structure and is easy to manufacture and use.
[0044] In one embodiment, there are two steam pipes 22 , and the two steam pipes 22 are respectively disposed on both sides of the drying box 21 .
[0045] In one embodiment, the sludge drying device 20 further includes a lifting mechanism 50, which includes a bottom plate 51 and a cylinder 52. The bottom plate 51 is disposed below the drying box 21, and the bottom plate 51 is rotatably connected to a first end of the drying box 21. The cylinder body of the cylinder 52 is hinged to the bottom plate 51, and the piston rod of the cylinder 52 is hinged to a second end of the drying box 21.
[0046] In the initial state, the piston rod of the cylinder 52 is in a retracted state, and the drying box 21 is in a horizontal state.
[0047] When the wet sludge in the drying box 21 is dried to form dry sludge, the staff pulls up the baffle 23, and then the stirring mechanism 40 is started to break the dry sludge into blocks. Then the control box controls the cylinder 52 to start, and the piston rod of the cylinder 52 is extended, so that the second end of the drying box 21 is raised, and the drying box 21 is tilted, and the block dry sludge will be poured out to facilitate the transportation of the dry sludge.
[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.
[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A resource recycling system for a garbage power plant and a sewage treatment plant, characterized by: Includes waste-to-energy plants, sludge drying units and sewage treatment plants; The waste power plant comprises a boiler, a fire-generating and exhausting device, a continuous blowdown expansion tank and a periodic blowdown expansion tank, the inlet of the fire-generating and exhausting device is connected to the steam collecting tank of the boiler, the inlet of the continuous blowdown expansion tank is connected to the continuous blowdown pipe of the waste power plant, and the inlet of the periodic blowdown expansion tank is connected to the periodic blowdown pipe of the waste power plant; The gas inlet of the sludge drying device is connected to the outlet of the fire exhaust device, the outlet of the continuous blowdown expansion tank and the outlet of the periodic blowdown expansion tank; The sewage outlet of the sewage treatment plant is communicated with the sludge inlet of the sludge drying device.
2. A waste power plant and sewage treatment plant resource recycling system according to claim 1, characterized in that: The discharge port of the sludge drying device is communicated with the incineration chamber of the boiler.
3. A waste power plant and sewage treatment plant resource recycling system according to claim 1, characterized in that: The sludge drying device includes a drying box and a steam pipe. The sludge inlet is formed at the top of the drying box, the discharge port is formed at the first end of the drying box, a baffle is provided at the discharge port, the baffle is plugged into the drying box, the steam pipe is fixedly installed on the inner wall of the drying box, and a plurality of nozzles are fixedly installed on the steam pipe.
4. A garbage power plant and sewage treatment plant resource recycling system according to claim 3, characterized in that: The sludge drying device also includes a stirring mechanism, which includes a guide rail, a moving plate, a disc, a first motor and a driving assembly; The guide rail is fixedly installed on the top of the drying box, the movable plate is arranged on the guide rail and is slidably connected to the guide rail, the disc is arranged below the movable plate and is rotatably connected to the movable plate, a plurality of stirring blades are fixedly installed on the bottom of the disc, and the plurality of stirring blades are arranged at intervals along the circumference of the disc, the first motor is used to control the rotation of the disc, and the driving assembly is used to control the movement of the movable plate on the guide rail.
5. A garbage power plant and sewage treatment plant resource recycling system according to claim 4, characterized in that: The driving assembly includes a lead screw and a second motor. The lead screw passes through the movable plate and both ends are rotatably connected to the drying box. The lead screw is threadedly connected to the movable plate. The second motor is used to control the rotation of the lead screw.
6. A garbage power plant and sewage treatment plant resource recycling system according to claim 3, characterized in that: The number of the steam pipes is two, and the two steam pipes are respectively arranged on both sides of the drying box.
7. The resource recycling system for a garbage power plant and a sewage treatment plant according to claim 3 is characterized by: The sludge drying device also includes a lifting mechanism, which includes a base plate and a cylinder. The base plate is arranged below the drying box, the base plate is rotatably connected to the first end of the drying box, the cylinder body of the cylinder is hinged to the base plate, and the piston rod of the cylinder is hinged to the second end of the drying box.