Wastewater recycling system for thermotechnical pool
By designing a wastewater reuse system for thermal water tanks, high-temperature wastewater is pumped to the four-in-one furnace gas pipeline network to replace steam heat tracing, the problems of steam waste and temperature instability are solved, and the reuse and energy of waste heat in wastewater are realized Consumption saving and avoid freezing.
Patent Information
- Application Number
- CN202323597202.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The prior art has problems of steam waste and unstable heat tracing temperature when utilizing waste heat, especially in winter, and the pressure fluctuations of high-temperature wastewater are not suitable for use as a heat tracing heat source.
A wastewater reuse system for thermal water tanks was designed, and the high-temperature wastewater in the thermal wastewater tank was pumped into the four-in-one furnace gas pipeline network through a centrifugal pump, replacing steam heating tracing, and using branch pipelines and control valves. Achieve single-channel control to ensure the stability of the heat tracing temperature and drain low-temperature water to the rainwater well.
It realizes the effective reuse of waste heat in wastewater, saves steam energy consumption, avoids winter freezing and maintains the stability of the heat tracing temperature.
Smart Images
Figure CN222187959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a chemical heat energy recovery and utilization system, in particular to a thermal water tank wastewater recovery and utilization system, belonging to the technical field of energy conservation. Background Art
[0002] The waste heat boiler system produces 3.5MPa steam. The steam drum of the boiler needs to be continuously discharged and discharged regularly every day. It is finally discharged into the thermal wastewater pool together with the rainwater well. The discharge of high-calorie wastewater causes waste of thermal energy. For high-temperature wastewater, thermal energy utilization is implemented nearby. The existing utilization methods include steam tracing and water tracing. The water tracing of some enterprises is steam condensate.
[0003] The existing technology wastes steam, and in summer, the steam heating valve needs to be limited to prevent the temperature of the fuel gas pipeline from being too high, which is difficult to control. Steam condensate can be used as a substitute, but the disadvantages are obvious: the flow rate of steam condensate is high, it is limited by the receiving unit, and the pressure often fluctuates, which is not suitable for use as a heating source. Heating the fuel gas pipeline of a four-in-one furnace alone can easily cause unstable heating temperature, and even freezing in winter. Utility Model Content
[0004] In view of the defects of the above methods, the purpose of the utility model is to provide a thermal water tank wastewater recycling system to achieve the reuse of waste heat in the wastewater, save steam energy consumption, and stabilize the heating temperature.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a thermal water pool wastewater reuse system, comprising: a thermal wastewater pool, a four-in-one furnace gas pipeline network located on one side of the thermal wastewater pool, a water inlet pipeline unit, a water outlet pipeline unit, an overflow pipeline and a centrifugal pump; the side wall of one end of the thermal wastewater pool is connected to the centrifugal pump through a pipeline, the outlet end of the centrifugal pump is connected to the heating pipe of the four-in-one furnace gas pipeline network through the water inlet pipeline unit, the water outlet pipeline unit is connected from the heating pipe at the bottom of the four-in-one furnace gas pipeline network, and the water outlet pipeline unit is merged into the rainwater drainage system together with the overflow pipeline arranged on the other side of the thermal wastewater pool;
[0006] Furthermore, the thermal wastewater pool contains high-temperature wastewater from the steam drum of the boiler producing steam and the continuous discharge; the temperature of the high-temperature wastewater in the thermal wastewater pool is about 65°C;
[0007] Furthermore, an inlet valve is provided on the pipeline at the inlet end of the centrifugal pump, and the pipeline where the valve is located is a DN50 specification pipeline;
[0008] Furthermore, the water inlet pipeline unit comprises: four branch pipelines in parallel, the outlet pipeline of the centrifugal pump is divided into four branch pipelines and respectively connected to the four-in-one furnace gas pipeline network, and the four branch pipelines are respectively provided with control valves to realize single-channel control;
[0009] Furthermore, an outlet valve, a one-way valve and a pressure gauge are provided on the outlet pipeline of the centrifugal pump;
[0010] Furthermore, the four branch pipelines are DN15 specification pipelines.
[0011] Furthermore, the water outlet pipeline unit includes: four branch water outlet pipes correspondingly connected to the four-in-one furnace gas pipeline network, and the four branch water outlet pipes are gathered and connected to the bottom position of the overflow pipeline;
[0012] Furthermore, a temperature meter is provided on each of the four branch water outlet pipes to control the temperature of each water outlet pipe.
[0013] Furthermore, the four branch outlet pipes of the outlet pipeline unit are also DN15 pipes; the four branch outlet pipes are combined into a main pipe, and the main pipe adopts a DN50 pipe.
[0014] With the above structure, the fuel gas enters the four-in-one heating furnace. Since the self-produced fuel gas contains water vapor, steam heating is required in front of the heating furnace. The high-temperature wastewater of about 65°C in the thermal wastewater pool is pumped to the water inlet pipeline unit through a centrifugal pump; the original steam heating is replaced by water heating in the fuel gas pipeline network of the four-in-one heating furnace through the diversion of the water inlet pipeline unit, and the low-temperature water after heating is discharged through the water outlet pipeline unit, and is discharged to the rainwater well after reaching the overflow pipeline; if the overflow pipeline of the thermal wastewater pool needs to be drained, it can be discharged to the rainwater well together. The water temperature in the water outlet pipeline unit after heating is maintained at 40°C all year round, which can effectively avoid freezing in winter.
[0015] The beneficial effects of the utility model are:
[0016] According to the actual situation, this system is designed through temperature, flow calculation, distance and other conditions to achieve the reuse of waste heat in wastewater and save steam energy consumption. The heating temperature is stable and it can effectively avoid freezing in winter. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the utility model.
[0018] In the figure, 1. thermal wastewater pool, 2. four-in-one furnace gas pipeline network, 3. overflow pipeline, 4. centrifugal pump, 5. inlet valve, 6. branch pipeline, 7. control valve, 8. outlet valve, 9. check valve, 10. pressure gauge, 11. branch outlet pipe, 12. temperature gauge. DETAILED DESCRIPTION
[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0020] like Figure 1 A thermal water pool wastewater reuse system shown in the figure comprises: a thermal wastewater pool 1, a four-in-one furnace gas pipeline network 2 located on one side of the thermal wastewater pool 1, a water inlet pipeline unit, a water outlet pipeline unit, an overflow pipeline 3 and a centrifugal pump 4; the side wall of one end of the thermal wastewater pool 1 is connected to the centrifugal pump 4 through a pipeline, the outlet end of the centrifugal pump 4 is connected to the heating pipe of the four-in-one furnace gas pipeline network 2 through the water inlet pipeline unit, the water outlet pipeline unit is connected from the heating pipe at the bottom of the four-in-one furnace gas pipeline network 2, and the water outlet pipeline unit is merged into the rainwater drainage system together with the overflow pipeline 3 arranged on the other side of the thermal wastewater pool 1;
[0021] An inlet valve 5 is arranged on the pipeline at the inlet end of the centrifugal pump 4, and the pipeline where the valve is located is a DN50 specification pipeline;
[0022] The water inlet pipeline unit comprises: four branch pipelines 6 connected in parallel, the outlet pipeline of the centrifugal pump 5 is divided into four branch pipelines 6 and respectively connected to the four-in-one furnace gas pipeline network 2, and the four branch pipelines 6 are respectively provided with control valves 7 to realize single-channel control;
[0023] The outlet pipeline of the centrifugal pump 4 is provided with an outlet valve 8, a check valve 9 and a pressure gauge 10;
[0024] The four branch pipelines 6 are DN15 specification pipelines.
[0025] The water outlet pipeline unit includes: four branch water outlet pipes 11 correspondingly connected to the four-in-one furnace gas pipeline network 2, and the four branch water outlet pipes 11 are gathered and connected to the bottom position of the overflow pipeline 3;
[0026] The four branch water outlet pipes 11 are respectively provided with a thermometer 12 for controlling the temperature of each water outlet pipe.
[0027] The four branch outlet pipes 11 of the outlet pipeline unit are also DN15 in specification; the four branch outlet pipes 11 are combined into a main pipe, and the main pipe adopts a DN50 in specification.
[0028] With the above structure, the fuel gas enters the four-in-one heating furnace. Since the self-produced fuel gas contains water vapor, steam heating is required before the heating furnace. The high-temperature wastewater of about 65°C in the thermal wastewater pool 1 is pumped to the water inlet pipeline unit through the centrifugal pump 4; the fuel gas pipeline network 2 of the four-in-one heating furnace is heated with water to replace the original steam heating through the diversion of the water inlet pipeline unit, and the low-temperature water after heating is discharged through the water outlet pipeline unit, and is discharged to the rainwater well after reaching the overflow pipeline 3.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships 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 referred device or element 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.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
Claims
1. A thermal water tank wastewater recycling system, characterized in that: include: A thermal wastewater pool, a four-in-one furnace gas pipeline network located on one side of the thermal wastewater pool, an inlet pipeline unit, an outlet pipeline unit, an overflow pipeline and a centrifugal pump; the side wall of one end of the thermal wastewater pool is connected to the centrifugal pump through a pipeline, the outlet end of the centrifugal pump is connected to the four-in-one furnace gas pipeline network through the inlet pipeline unit, and the outlet pipeline unit is connected from the bottom of the four-in-one furnace gas pipeline network. The outlet pipeline unit is merged into the rainwater drainage system together with the overflow pipeline arranged on the other side of the thermal wastewater pool.
2. A thermal water tank wastewater recycling system according to claim 1, characterized in that: An inlet valve is arranged on the pipeline at the inlet end of the centrifugal pump, and the pipeline where the valve is located is a DN50 specification pipeline.
3. A thermal water tank wastewater recycling system according to claim 1, characterized in that: The water inlet pipeline unit comprises: four branch pipelines in parallel, the outlet pipeline of the centrifugal pump is divided into four branch pipelines and respectively connected to the four-in-one furnace gas pipeline network, and the four branch pipelines are respectively provided with control valves.
4. A thermal water tank wastewater recycling system according to claim 1, characterized in that: An outlet valve, a one-way valve and a pressure gauge are respectively provided on the outlet pipeline of the centrifugal pump.
5. A thermal water tank wastewater recycling system according to claim 3, characterized in that: The four branch pipelines are DN15 specification pipelines.
6. A thermal water tank wastewater recycling system according to claim 1, characterized in that: The water outlet pipeline unit comprises: four branch water outlet pipes correspondingly connected to the four-in-one furnace gas pipeline network, and the four branch water outlet pipes are gathered and connected to the bottom position of the overflow pipeline.
7. A thermal water tank wastewater recycling system according to claim 6, characterized in that: The four branch water outlet pipes are respectively provided with temperature gauges.
8. A thermal water tank wastewater recycling system according to claim 6, characterized in that: The specifications of the four branch outlet pipes of the outlet pipeline unit are also DN15 pipelines; the four branch outlet pipes are gathered into a main pipe, and the main pipe adopts a DN50 specification pipeline.