Resource recycling system for garbage power plant and sewage treatment plant
By establishing a resource recycling system between waste-to-energy plants and wastewater treatment plants, and using steam to dry and recycle sludge, the problems of resource waste and sludge treatment have been solved, thereby improving environmental protection and economic benefits.
Patent Information
- Application Number
- CN202423264428.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Waste-to-energy plants and wastewater treatment plants suffer from serious resource waste, and improper treatment of steam and sludge emitted from boilers leads to environmental pollution and energy waste.
Waste steam from waste-to-energy plants is used to dry sludge from wastewater treatment plants. The wet sludge is processed through a drying box and a mixing mechanism to produce dry sludge, which is then recycled for incineration in a boiler.
It reduces energy waste, achieves sludge reduction and harmless treatment, protects the environment and increases economic benefits.
Smart Images
Figure CN223709619U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to resource recycling technical field, concretely relates to a garbage power plant and sewage treatment plant resource recycling system. BACKGROUND
[0002] In the garbage power plant, in the process of starting the boiler, because the parameter of the main steam does not reach the condition of the steam, it is often directly discharged to the atmosphere through the fire-arranging steam device, causing the waste of resources.
[0003] The garbage power plant has high requirements for the quality of steam and water during operation, and usually sets up continuous blowdown device and periodic blowdown device to control the salt content in the boiler water within the normal range. The continuous blowdown device and the periodic blowdown device send the discharged boiler water to the continuous blowdown flash vessel and the periodic blowdown flash vessel respectively for expansion flash, and the flashed steam is also directly discharged to the atmosphere, causing the waste of resources.
[0004] At the same time, a large amount of wet sludge is produced after sewage treatment in the sewage treatment plant, and the previous disposal method is usually direct landfill, which brings great pollution hazard to the environment. With the rise of sludge incineration technology in recent years, sludge incineration has found a better treatment method for sludge reduction and harmlessness. However, due to the high moisture content of wet sludge, a large amount of additional energy is usually required to dry the sludge to meet the conditions for incineration.
[0005] Therefore, how to comprehensively utilize the resources of the garbage power plant and the sewage treatment plant and reduce the waste of resources is an urgent problem to be solved. UTILITY MODEL CONTENT
[0006] In view of the defects in the prior art, the utility model aims to provide a garbage power plant and sewage treatment plant resource recycling system, which can effectively utilize the resources of the garbage power plant and the sewage treatment plant and reduce the waste of resources.
[0007] In order to achieve the above-mentioned purpose, the utility model realizes the technical scheme as follows: a garbage power plant and sewage treatment plant resource recycling system, comprising a garbage power plant, a sludge drying device and a sewage treatment plant;
[0008] The garbage power plant comprises a boiler, a fire-arranging steam device, a continuous blowdown flash vessel and a periodic blowdown flash vessel, the inlet of the fire-arranging steam device is communicated with the steam header of the boiler, the inlet of the continuous blowdown flash vessel is communicated with the continuous blowdown pipe of the garbage power plant, and the inlet of the periodic blowdown flash vessel is communicated with the periodic blowdown pipe of the garbage power plant;
[0009] The gas inlet of the sludge drying device is communicated with the outlet of the live fire exhaust device, the outlet of the continuous sewage expansion tank and the outlet of the periodic sewage expansion tank.
[0010] The sewage outlet of the sewage treatment plant is communicated with the sludge inlet of the sludge drying device.
[0011] Further, the discharge outlet of the sludge drying device is communicated with the incineration chamber of the boiler.
[0012] Further, the sludge drying device comprises a drying box and a steam pipe, the top of the drying box is formed with the sludge inlet, the first end of the drying box is formed with the discharge outlet, a baffle is arranged at the discharge outlet, the baffle is inserted with 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] Further, the sludge drying device further comprises a stirring mechanism, 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 moving plate is arranged on the guide rail and is in sliding connection with the guide rail, the disc is arranged below the moving plate and is in rotary connection with the moving plate, a plurality of stirring blades are fixedly installed on the bottom of the disc, 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 moving plate on the guide rail.
[0015] Further, the driving assembly comprises a lead screw and a second motor, the lead screw penetrates through the moving plate and is in rotary connection with the drying box at both ends, the lead screw is in threaded connection with the moving plate, and the second motor is used to control the rotation of the lead screw.
[0016] Further, the number of the steam pipes is two, and two steam pipes are arranged on both sides of the drying box.
[0017] Further, the sludge drying device further comprises a lifting mechanism, the lifting mechanism comprises a bottom plate and a gas cylinder, the bottom plate is arranged below the drying box, the bottom plate is in rotary connection with the first end of the drying box, the cylinder body of the gas cylinder is hinged to the bottom plate, and the piston rod of the gas cylinder is hinged to the second end of the drying box.
[0018] The utility model discloses a beneficial effect: the utility model provides a kind of garbage power plant and sewage treatment plant resource recycling system, utilize the steam of waste of garbage power plant to carry out drying to the sludge discharged by sewage treatment plant, avoid the energy waste of garbage power plant in large quantities while, make the sludge of sewage treatment plant get reduction, harmless treatment, both protect the environment, and reduce the waste of resources, increase economic benefit. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is process structure block diagram for the utility model;
[0020] Figure 2 It is the stereoscopic structure schematic diagram of sludge drying device under the first visual angle;
[0021] Figure 3 It is the stereoscopic structure schematic diagram of sludge drying device under the second visual angle;
[0022] Figure 4 It is the front view structure schematic diagram of sludge drying device.
[0023] Reference signs: 10-garbage power plant, 11-fire making and steam discharging device, 12-continuous blowdown expander, 13-periodic blowdown expander, 20-sludge drying device, 21-drying box, 22-steam pipe, 23-baffle, 24-slot, 25-sprinkler, 30-sewage treatment plant, 40-agitating mechanism, 41-guide rail, 42-moving plate, 43-disc, 44-first motor, 45-driving assembly, 451-screw rod, 452-second motor, 50-lifting mechanism, 51-bottom plate, 52-cylinder. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0025] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0026] In the description of the present application, it should be understood that the terms "vertical", "horizontal", "horizontal", "top", "bottom", "upper", "lower", "inner" and "outer" indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application.
[0027] In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
[0028] As shown in Figures 1-4 The utility model provides a kind of garbage power plant and sewage treatment plant resource recycling system, including garbage power plant 10, sludge drying device 20, sewage treatment plant 30 and control cabinet.
[0029] Garbage power plant 10 includes boiler, fire starting and steam exhausting device 11, continuous blowdown flash tank 12 and periodic blowdown flash tank 13.The inlet of fire starting and steam exhausting device 11 is communicated with the steam collecting header of boiler.The inlet of continuous blowdown flash tank 12 is communicated with the continuous blowdown pipe of garbage power plant 10.The inlet of periodic blowdown flash tank 13 is communicated with the periodic blowdown pipe of garbage power plant 10.
[0030] The gas inlet of sludge drying device 20 is communicated with the outlet of fire starting and steam exhausting device 11, the outlet of continuous blowdown flash tank 12 and the outlet of periodic blowdown flash tank 13.
[0031] The blowdown port of sewage treatment plant 30 is communicated with the sludge inlet of sludge drying device 20.
[0032] When the system is running, on the one hand, the steam discharged from the steam collecting header of boiler enters sludge drying device 20 after passing through fire starting and steam exhausting device 11;on the other hand, the boiler water discharged from garbage power plant 10 is sent to continuous blowdown flash tank 12 and periodic blowdown flash tank 13 respectively for expansion flash, and the flashed steam enters sludge drying device 20.At this time, the wet sludge discharged from sewage treatment plant 30 enters sludge drying device 20, and after contacting with steam, water is evaporated to form dry sludge.
[0033] The utility model utilizes the waste steam of garbage power plant 10 to dry the sludge discharged from sewage treatment plant 30, which not only avoids the waste of a large amount of energy of garbage power plant 10, but also reduces the sludge of sewage treatment plant 30, and the sludge is harmless, which not only protects the environment, but also reduces the waste of resources and increases economic benefits.
[0034] In one embodiment, the discharge outlet of the sludge drying device 20 is communicated with the incineration chamber of the boiler.
[0035] In this way, the dry sludge generated by the sludge drying device 20 can be returned to the incineration chamber of the boiler for incineration to generate power, forming a recycling of resources and further saving resources.
[0036] In one embodiment, the sludge drying device 20 comprises a drying box 21 and a steam pipe 22. The top of the drying box 21 is formed with a sludge inlet, and the first end of the drying box 21 is formed with a discharge outlet. A baffle 23 is arranged at the discharge outlet, and the baffle 23 is inserted into the drying box 21. Specifically, a slot 24 is formed at the discharge outlet of the drying box 21, and the baffle 23 is inserted into the slot 24 to close the discharge outlet. The steam pipe 22 is fixedly installed on the inner wall of the drying box 21, and a plurality of nozzles 25 are fixedly installed on the steam pipe 22. The first end of the nozzle 25 is communicated with the steam pipe 22, and the second end of the nozzle 25 is inclined downward along the 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 then is sprayed out through the plurality of nozzles 25 to quickly dry the wet sludge.
[0038] In one embodiment, the sludge drying device 20 further comprises a stirring mechanism 40, which comprises 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 transverse direction. The moving plate 42 is arranged on the guide rail 41 and is in sliding connection with the guide rail 41. The disc 43 is arranged below the moving plate 42 and is in rotational connection with the moving plate 42. The bottom of the disc 43 is fixedly installed with a plurality of stirring blades, which are arranged in equal intervals along the circumference of the disc 43. The first motor 44 is fixedly installed on the moving plate 42 and is used to control the rotation of the disc 43. The first motor 44 is electrically connected with the control cabinet. The driving assembly 45 is used to control the movement of the moving plate 42 on the guide rail 41.
[0040] During the drying process of the wet sludge, the control cabinet controls the first motor 44 to start, and the first motor 44 drives the disc 43 and the plurality of stirring blades to rotate, which cooperates with the driving assembly 45 to stir the wet sludge in the entire drying box 21, so that the underlying wet sludge is turned up to contact with the steam, thereby improving the drying efficiency of the wet sludge.
[0041] In one embodiment, the driving assembly 45 comprises a screw rod 451 and a second motor 452. The screw rod 451 passes through the moving plate 42 and is rotatably connected to the drying box 21 at both ends, and is threadedly connected to the moving plate 42. The second motor 452 is fixedly installed on the drying box 21, and is electrically connected to the control cabinet for controlling the rotation of the screw rod 451.
[0042] When the driving assembly 45 works, the control cabinet controls the second motor 452 to start, and the second motor 452 drives the screw rod 451 to rotate. Under the action of the guide rail 41, the moving 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 convenient to manufacture and use.
[0044] In one embodiment, the number of steam pipes 22 is two, and the two steam pipes 22 are arranged on the two sides of the drying box 21.
[0045] In one embodiment, the sludge drying device 20 further comprises a lifting mechanism 50, and the lifting mechanism 50 comprises a bottom plate 51 and a gas cylinder 52. The bottom plate 51 is arranged below the drying box 21, and the bottom plate 51 is rotatably connected to the first end of the drying box 21. The cylinder body of the gas cylinder 52 is hinged to the bottom plate 51, and the piston rod of the gas cylinder 52 is hinged to the second end of the drying box 21.
[0046] In the initial state, the piston rod of the gas cylinder 52 is in the contracted state, and at this time the drying box 21 is in the horizontal state.
[0047] When the wet sludge in the drying box 21 is dried to form dry sludge, the staff pulls out the baffle 23 upward, and then the stirring mechanism 40 is started to crush the dry sludge, so that the dry sludge is crushed into blocks. Then the control cabinet controls the gas cylinder 52 to start, the piston rod of the gas cylinder 52 is elongated, the second end of the drying box 21 is lifted, the drying box 21 is in an inclined state, and the block-shaped dry sludge is poured out to facilitate the transfer of the dry sludge.
[0048] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
[0049] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.
Claims
1. A resource recycling system for waste-to-energy plants and wastewater treatment plants, characterized in that: The waste power plant, the sludge drying device and the sewage treatment plant; The waste power plant comprises a boiler, a fire starting and steam discharging device, a continuous blowdown expander and a periodic blowdown expander, the inlet of the fire starting and steam discharging device is communicated with the steam header of the boiler, the inlet of the continuous blowdown expander is communicated with the continuous blowdown pipe of the waste power plant, and the inlet of the periodic blowdown expander is communicated with the periodic blowdown pipe of the waste power plant; The gas inlet of the sludge drying device is communicated with the outlet of the fire starting and steam discharging device, the outlet of the continuous blowdown expander and the outlet of the periodic blowdown expander. The blowdown port of the sewage treatment plant is communicated with the sludge inlet of the sludge drying device.
2. The system according to claim 1, wherein: The discharge port of the sludge drying device is communicated with the incineration chamber of the boiler.
3. The system according to claim 2, wherein: The sludge drying device comprises a drying box and a steam pipe, the top of the drying box is formed with the sludge inlet, the first end of the drying box is formed with the discharge port, a baffle is arranged at the discharge port, the baffle is inserted 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. The system according to claim 3, wherein: The sludge drying device further comprises a stirring mechanism, the stirring mechanism comprises 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 moving plate is arranged on the guide rail and is in sliding connection with the guide rail, the disc is arranged below the moving plate and is in rotary connection with the moving plate, a plurality of stirring blades are fixedly installed on the bottom of the disc, 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 moving plate on the guide rail.
5. The system of claim 4, wherein: The driving assembly comprises a lead screw and a second motor, the lead screw penetrates through the moving plate and is in rotary connection with the drying box at both ends, the lead screw is in threaded connection with the moving plate, and the second motor is used to control the rotation of the lead screw.
6. The system of claim 3, wherein the system further comprises a waste heat recovery unit. The number of the steam pipes is two, and two steam pipes are arranged on both sides of the drying box.
7. The system of claim 3, wherein the system further comprises a waste heat recovery unit. The sludge drying device further comprises a lifting mechanism, the lifting mechanism comprises a bottom plate and a gas cylinder, the bottom plate is arranged below the drying box, the bottom plate is in rotary connection with the first end of the drying box, the cylinder body of the gas cylinder is hinged to the bottom plate, and the piston rod of the gas cylinder is hinged to the second end of the drying box.