Boiler blow-down water recycling equipment
By designing a boiler sewage recycling equipment, and using the linkage between cooled water pools and industrial water pools, the effective recycling and utilization of boiler sewage is achieved, the problems of energy waste and environmental pollution are solved, and the goals of zero discharge of boiler sewage and winter heating are achieved.
Patent Information
- Application Number
- CN202421365434.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-17
AI Technical Summary
Due to the high temperature of the boiler, the continuous sewage discharge cannot be discharged directly and needs to be cooled before discharge. The existing recycling technology cannot effectively utilize such water, resulting in energy waste and environmental pollution.
Design a boiler sewage recycling equipment. After cooling the drainage through a cooled pool, the water pump is used to pump into and out of the water pipe, and the valve switch is adjusted according to the season. In summer, the water directly enters the industrial pool, and in winter, the water is heat-exchanged and heated through the air compressor room heating equipment before entering the industrial pool.
The recycling and utilization of boiler sewage discharge is achieved, energy waste and environmental pollution are avoided, and the goal of zero discharge of boiler sewage discharge is achieved, while heating is used in winter.
Smart Images
Figure CN222685670U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wastewater collection, in particular to a device for recycling boiler wastewater. Background Art
[0002] In order to control the quality of boiler water and steam, the boiler must carry out continuous blowdown, also known as surface blowdown. It requires continuous discharge of part of the boiler water from the part with the highest salt and alkali concentration in the boiler water to reduce the salt content, alkali content, silicate content and suspended alkali content in the boiler water. There is also regular blowdown, which discharges impurities in the lower header of the water-cooled wall regularly according to the quality of the boiler water. The purpose is to ensure the quality of the boiler water so that the boiler can operate stably and safely for a long time. The heat loss is also an important factor affecting the efficiency of the boiler. Because this part of the continuous drainage is sewage, it is generally first recovered through a small amount of heat through a simple flash deaerator of the continuous drainage expander, and the rest is directly discharged into the fixed drainage expansion tank and then to the water pool for cooling. It is pumped into the industrial water pipeline by two sewage pumps to the chemical water multi-media filter. The other way is selectively discharged into the ditch through the drainage pipe. The temperature of the boiler continuous drainage is relatively high, about 100°, so it cannot be discharged directly. It needs to lower the temperature before being discharged. In order to lower the temperature, the continuous drainage is designed to enter the cooling water pool for cooling and cooling for chemical water production. Among them, the boiler produces steam for heat exchange and condensation and then returns to the deaerator to the boiler to form a circulation state. Therefore, chemical water production is not continuous. When the chemical water stops making water, the water in the cooling water pool can only be discharged through the sewage pump, resulting in huge energy waste and environmental pollution.
[0003] To avoid the above situation, the water in the cooling water pool needs to be recycled. The current recycling mainly includes recycling to the heating network water supply and recycling to the waste hot water pipeline of the heat pump unit. However, since the salt content in the sewage boiler water exceeds the standard seriously, long-term use may cause scaling and corrosion of the pipeline. Therefore, the water cannot be recycled to the heating network water supply and the waste hot water pipeline of the heat pump unit. Utility Model Content
[0004] The utility model provides a device for recycling boiler wastewater, which is used to solve the defects in the prior art.
[0005] The utility model is realized through the following technical solutions:
[0006] A device for recycling boiler wastewater comprises a cooling water tank and an industrial water tank. The cooling water tank is connected with a continuous discharge part and a fixed discharge part of a furnace body through an inlet pipe. A water pump is arranged in the cooling water tank. The water outlet of the water pump is connected with the water inlet end of an outlet pipe. The outlet pipe is also connected with an inlet pipe of an air compressor room heating equipment and an outlet pipe of the air compressor room heating equipment. A first valve is arranged on the outlet pipe, and the first valve is located between the inlet pipe of the air compressor room heating equipment and the outlet pipe of the air compressor room heating equipment. A second valve is arranged on the inlet pipe of the air compressor room heating equipment.
[0007] In the application of the present invention, the continuous drainage of the continuous drainage part and the fixed drainage part of the furnace body enters the cold water pool through the water inlet pipe for cooling, and the cooled water enters the water outlet pipe through the water pump, wherein, in summer, the first valve is opened and the second valve is closed, so the water directly enters the industrial water pool, wherein, since the water in the industrial water pool is widely used, such as chemical water, fire water, desulfurization process water replenishment, heating network replenishment, cooling tower replenishment, etc., the continuous drainage is discharged to the industrial water pool, which can be recycled and reused, so that the boiler discharge is zero, and there is no serious impact on each system. In winter, the first valve is closed and the second valve is opened, so that the water cooled by the cold water pool (still maintained at about 50 degrees after cooling) enters the air compressor room heating equipment through the air compressor room heating equipment inlet pipe and flows out from the air compressor room heating equipment outlet pipe, realizing heat exchange and providing heat energy to realize heating, and the water after heat exchange enters the industrial water pool again.
[0008] Preferably, the outlet end of the water inlet pipe is fixedly connected downward and communicated with an outer pipe, an inner pipe is arranged inside the outer pipe, and the outer pipe and the inner pipe are slidably sealed, and the inner pipe is driven by a driving device to move up and down and remain stationary. The inner pipe moves up and down along the outer pipe under the drive of the driving device, so that the height of the inner pipe to the cooling water pool can be changed, and then the contact time of the water flowing out of the inner pipe with the air can be increased or decreased, so that better heat dissipation and heat preservation can be achieved according to needs.
[0009] Preferably, the driving device comprises a screw rod, a slide rail is vertically fixedly connected to one side of the inner wall of the cooling water tank, a slider is arranged on the slide rail, the slider is fixedly connected to the cross plate, the cross plate is fixedly connected to the outer side of the inner tube, a thread hole is opened on the cross plate, the screw rod passes through the thread hole and is threadedly matched with the thread hole, and the lower end of the screw rod is rotatably connected to the inner wall of the ground of the cooling water tank. The screw rod is rotated, and since the thread hole on the cross plate is threadedly matched with the screw rod, the cross plate is fixedly connected to the slider, and the slider moves along the slide rail, the rotation of the screw rod can drive the cross plate to move up and down, thereby driving the inner tube to move up and down and can remain stationary when the screw rod does not rotate.
[0010] Preferably, the outer tube is located above the cooling water pool, the lower part of the inner tube is bent vertically to one side, a baffle is provided on one side of the inner tube, the baffle is located in the cooling water pool and is stepped, and the water outlet end of the inner tube can be opposite to the uppermost baffle. In summer, the inner tube shrinks in the outer tube, the water sprayed from the inner tube can be sprayed on the uppermost baffle, and then the water flows down in sequence, so that a better cooling effect can be achieved, while in winter, the inner tube extends from the outer tube and goes deep into the cooling water pool, so the water flow is no longer sprayed on the baffle, reducing heat dissipation.
[0011] As a preferred embodiment, the heat preservation cover can be covered on the cooling water pool, and the heat preservation cover is provided with a through slot for the inner tube, the water inlet pipe and the screw rod to pass through. In summer, the heat preservation cover is far away from the cooling water pool and will not affect the heat dissipation. In winter, it is covered on the cooling water pool to achieve the heat preservation effect.
[0012] The beneficial effects of the utility model are as follows: the use of the present application can recycle the water in the cooling water pool into the industrial water pool. Since the water in the industrial water pool is widely used, such as chemical water production, fire water, desulfurization process water replenishment, heating network replenishment, cooling tower replenishment, etc., the wastewater will be discharged to the industrial water pool and can be recycled to achieve zero boiler sewage discharge without serious impact on various systems. At the same time, heat exchange can be achieved in winter to make full use of the heat generated. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the cooling water pool.
[0016] As shown in the figure:
[0017] 1. Cooling water tank, 2. Industrial water tank, 3. Water pump, 4. Water inlet pipe, 5. Water outlet pipe, 6. First valve, 7. Second valve, 8. Water inlet pipe of air compressor room heating equipment, 9. Water outlet pipe of air compressor room heating equipment, 10. Slide rail, 11. Slider, 12. Horizontal plate, 13. Outer pipe, 14. Inner pipe, 15. Baffle, 16. Insulation cover. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] A boiler wastewater recycling device, such as Figure 1 and Figure 2As shown. It includes a cooling water tank 1 and an industrial water tank 2. The cooling water tank 1 is connected to the continuous discharge part and the fixed discharge part of the furnace body through an inlet pipe 4. A water pump 3 is arranged in the cooling water tank 1. The water outlet of the water pump 3 is connected to the water inlet end of the outlet pipe 5. The outlet pipe 5 is also connected to the air compressor room heating equipment inlet pipe 8 and the air compressor room heating equipment outlet pipe 9. A first valve 6 is arranged on the outlet pipe 5. The first valve 6 is located between the air compressor room heating equipment inlet pipe 8 and the air compressor room heating equipment outlet pipe 9. The air compressor room heating equipment inlet pipe 8 is provided with a second valve 7.
[0020] In the application, the continuous drainage of the continuous drainage part and the fixed drainage part of the furnace body enters the cold water pool 1 through the water inlet pipe 4 for cooling, and the cooled water enters the water outlet pipe 5 through the water pump 3, wherein, in summer, the first valve 6 is opened and the second valve 7 is closed, so the water directly enters the industrial water pool 2, wherein, since the water in the industrial water pool 2 is widely used, such as chemical water, fire water, desulfurization process water replenishment, heating network replenishment, cooling tower replenishment, etc., the continuous drainage is discharged to the industrial water pool 2, which can be recycled and reused, so that the boiler discharge is zero, and there is no serious impact on each system. In winter, the first valve 6 is closed and the second valve 7 is opened, so the water cooled by the cold water pool 1 (still maintained at about 50 degrees after cooling) enters the air compressor room heating equipment through the air compressor room heating equipment inlet pipe 8 and flows out from the air compressor room heating equipment outlet pipe 9, realizing heat exchange and providing heat energy to realize heating, and the water after heat exchange enters the industrial water pool 2 again.
[0021] The outlet end of the water inlet pipe 4 is fixedly connected downward and connected to an outer pipe 13. An inner pipe 14 is arranged inside the outer pipe 13 and the outer pipe 13 and the inner pipe 14 are slidably sealed. The inner pipe 14 is driven by a driving device to move up and down and to be stationary. The driving device includes a screw rod. A slide rail 10 is vertically fixedly connected to one side of the inner wall of the mixing and cooling water pool 1. A slider 11 is arranged on the slide rail 10. The slider 11 is fixedly connected to a horizontal plate 12. The horizontal plate 12 is fixedly connected to the outer side of the inner pipe 14. A thread hole is provided on the horizontal plate 12. The screw rod passes through the thread hole and is threadedly matched with the thread hole. A blind hole is provided on the inner wall of the bottom surface of the mixing and cooling water pool 1. A bearing outer ring is fixedly connected in the blind hole. The bearing inner ring is coaxial with the screw rod and fixedly connected. Therefore, the lower end of the screw rod is rotatably connected to the inner wall of the ground of the mixing and cooling water pool 1.
[0022] The inner tube 14 moves up and down along the outer tube 13 under the drive of the driving device, specifically: rotating the screw rod, because the thread hole on the horizontal plate 12 cooperates with the screw rod thread, the horizontal plate 12 is fixedly connected to the slider 11, and the slider 11 moves along the slide rail 10. Therefore, the rotation of the screw rod can drive the horizontal plate 12 to move up and down, and then drive the inner tube 14 to move up and down and can remain stationary when the screw rod does not rotate. The inner tube 14 moves up and down along the outer tube 13 to change the height of the inner tube 14 to the cooling water pool 1, and then increase and reduce the contact time of the water flowing out of the inner tube 14 with the air when flowing down, so that the inner tube 14 can be retracted into the outer tube 13 in summer according to needs to increase heat dissipation, and in winter, the inner tube 14 extends out of the outer tube 13 and is inserted into the cooling water pool 1 to reduce heat dissipation and improve heat preservation.
[0023] The outer tube 13 is located above the cooling water pool 1, the lower part of the inner tube 14 is bent vertically to one side, a baffle 15 is provided on one side of the inner tube 14, the baffle 15 is located in the cooling water pool 1 and is stepped, and the water outlet end of the inner tube 14 can be opposite to the uppermost baffle 15. In summer, the inner tube 14 is retracted in the outer tube 13, and the water sprayed from the inner tube 14 can be sprayed on the uppermost baffle 15, and then the water flow falls in sequence, so that a better cooling effect can be achieved, while in winter, the inner tube 14 extends from the outer tube 13 and goes deep into the cooling water pool 1, so the water flow no longer sprays on the baffle 15, reducing heat dissipation.
[0024] The heat preservation cover 16 can be covered on the cooling water pool 1, and a through slot for the inner tube 14, the water inlet pipe 4 and the screw rod to pass through is provided on the heat preservation cover 16. In summer, the heat preservation cover 16 is far away from the cooling water pool 1 and will not affect the heat dissipation. In winter, the heat preservation cover 16 is covered on the cooling water pool 1 to achieve the heat preservation effect.
[0025] The use of the present application can recycle the water in the cooling water pool 1 into the industrial water pool 2. Since the water in the industrial water pool 2 is widely used, such as chemical water production, fire water, desulfurization process water replenishment, heating network replenishment, cooling tower replenishment, etc., the water will be discharged to the industrial water pool 2 and can be recycled to achieve zero boiler sewage discharge without serious impact on various systems. At the same time, heat exchange can be achieved in winter to fully utilize the heat generated.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A boiler wastewater recycling device, characterized in that: It includes a cooling water tank and an industrial water tank. The cooling water tank is connected with the continuous discharge part and the fixed discharge part of the furnace body through an inlet pipe. A water pump is arranged in the cooling water tank. The outlet end of the water pump is connected with the inlet end of the outlet pipe. The outlet pipe is also connected with the inlet pipe of the air compressor room heating equipment and the outlet pipe of the air compressor room heating equipment. A first valve is arranged on the outlet pipe. The first valve is located between the inlet pipe of the air compressor room heating equipment and the outlet pipe of the air compressor room heating equipment. The inlet pipe of the air compressor room heating equipment is provided with a second valve.
2. The boiler wastewater recycling equipment according to claim 1 is characterized in that: The water outlet end of the water inlet pipe is fixedly connected downward and communicated with an outer pipe. An inner pipe is arranged inside the outer pipe and a sliding seal is formed between the outer pipe and the inner pipe. The inner pipe is driven by a driving device to move up and down and remain stationary.
3. The boiler wastewater recycling equipment according to claim 2 is characterized in that: The driving device includes a screw rod, a slide rail is vertically fixedly connected to one side of the inner wall of the cooling water pool, a slider is provided on the slide rail, the slider is fixedly connected to a cross plate, the cross plate is fixedly connected to the outer side of the inner tube, a thread hole is opened on the cross plate, the screw rod passes through the thread hole and cooperates with the thread of the thread hole, and the lower end of the screw rod is rotatably connected to the inner wall of the ground of the cooling water pool.
4. The boiler wastewater recycling equipment according to claim 3 is characterized in that: The outer pipe is located above the cooling water pool, the lower part of the inner pipe is bent vertically to one side, a baffle is provided on one side of the inner pipe, the baffle is located in the cooling water pool and is stepped, and the water outlet end of the inner pipe can be opposite to the uppermost baffle.
5. The boiler wastewater recycling equipment according to claim 1 is characterized in that: The utility model also comprises a heat preservation cover which can be covered on the cooling water pool, and the heat preservation cover is provided with a through groove through which the inner pipe, the water inlet pipe and the screw rod pass.