Steam condensate tank exhaust steam waste heat recovery device

Abstract

The utility model relates to a waste heat recovery device technical field and disclose a kind of steam condensate tank steam waste heat recovery device, including installation bottom plate, waste heat recovery component, waste heat recovery component includes condensing box, condensing box is fixedly connected on the upper surface of installation bottom plate, the inside intermediate position of condensing box is fixedly connected with baffle, the rear surface of baffle is fixedly connected with multiple curved cooling pipes, the front end of multiple curved cooling pipes is all penetrated out the front surface of baffle, the end of multiple curved cooling pipes away from baffle is all penetrated out the upper surface of condensing box, by the two-stage heat exchange of condenser and separator, gradually steam temperature is reduced from high temperature to about 75°C, improve waste heat recovery efficiency;Meanwhile, after the removal oxygen and incondensable gas, condensate is recycled for boiler house feed water, reduce water resource waste, realize the effective recovery and recycling of steam waste heat, and further improve the practicality and economy of steam condensate tank steam waste heat recovery device.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery devices, specifically a waste heat recovery device for exhaust steam from a steam condensate tank. Background Technology

[0002] In the urea section, when the high-temperature condensate flow rate is 60-70 t / h and the temperature is 120-130℃, there will be visual pollution of "white dragon".

[0003] Traditional heat recovery devices often employ a single-stage heat exchange structure, achieving heat exchange between exhaust steam and cooling water through only a single condenser, resulting in insufficient heat recovery. Because exhaust steam contains a large amount of latent heat (e.g., the latent heat of vaporization of saturated steam accounts for more than 70% of the total heat), single-stage heat exchange cannot fully release this energy, causing the discharged condensate to remain at a high temperature (typically >100℃), with a waste heat utilization rate of less than 60%. The unrecovered heat is directly discharged with the exhaust steam, not only wasting energy but also causing an increase in workshop ambient temperature due to the high-temperature exhaust steam discharge, affecting worker comfort. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a waste heat recovery device for steam condensate tanks, which solves the problem that traditional recovery devices mostly adopt a single-stage heat exchange structure, achieving heat exchange between waste steam and cooling water only through a single condenser, resulting in insufficient heat recovery.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for steam condensate tank, including a mounting base plate;

[0006] Waste heat recovery assembly includes a condenser box, which is fixedly connected to the upper surface of the mounting base plate. A partition is fixedly connected to the middle position inside the condenser box, and multiple curved cooling pipes are fixedly connected to the rear surface of the partition.

[0007] Among them, the front ends of multiple curved cooling pipes all penetrate through the front surface of the partition, and the ends of multiple curved cooling pipes away from the partition all penetrate through the upper surface of the condenser box.

[0008] Among them, one end of each of the multiple curved cooling pipes located outside the condensation box is fixedly connected to a conveying box that communicates with its interior, and the conveying box is fixedly connected to the condensation box.

[0009] The partition and the inner wall of the condenser are both fixedly connected to inclined plates. The two inclined plates are set one above the other, with the inclined plate connected to the partition located on the top.

[0010] Preferably, the upper surfaces of the two inclined plates are provided with multiple T-shaped grooves, the inner walls of the multiple T-shaped grooves are slidably connected with T-shaped slide plates, and the upper surfaces of the multiple T-shaped slide plates are fixedly installed with filter screens.

[0011] Preferably, a protective door is provided on the left side of the condenser box, a cooling water inlet pipe communicating with the interior is fixedly connected to the left side of the condenser box, and a cooling water outlet pipe communicating with the interior is fixedly connected to the right side of the condenser box.

[0012] Preferably, the waste heat recovery assembly further includes two L-shaped support frames, with a condenser and a separator fixedly connected to the left side of the two L-shaped support frames respectively, and the separator is located behind the condenser.

[0013] Preferably, a conveying pipe communicating with the interior of the separator is fixedly connected to the lower part of the rear surface of the separator, and the end of the conveying pipe away from the separator extends into the interior of the conveying box.

[0014] Preferably, an exhaust port is fixedly connected to the upper surface of the condenser and the separator, and a drain port is fixedly connected to the lower surface of both the condenser and the separator;

[0015] The condenser and the separator are both equipped with a first thermometer interface on the left side, and the condenser is equipped with a first pressure gauge interface on the lower left side.

[0016] Preferably, a second thermometer interface is provided on the upper left side of the condenser, and a second pressure gauge interface is provided on the upper left side of both the condenser and the separator.

[0017] A cooling water outlet is fixedly connected to the top of the outer surface of the condenser, and an air inlet is fixedly connected to the top of the outer surface of the condenser.

[0018] Preferably, an air outlet is fixedly connected to the outer surface of the separator, and a cooling water inlet is fixedly connected to the outer surface of the separator;

[0019] A condensate pump is fixedly installed on the upper surface of the mounting base plate. A connecting pipe is fixedly connected to the input end of the condensate pump, and the rear end of the connecting pipe extends into the interior of the condensate box.

[0020] Compared with the prior art, this utility model provides a waste heat recovery device for steam condensate tank, which has the following beneficial effects:

[0021] This steam condensate tank waste heat recovery device gradually reduces the waste steam temperature from high temperature to about 75°C through two-stage heat exchange between the condenser and the separator, thereby improving the waste heat recovery efficiency. At the same time, the condensate after removing oxygen and non-condensable gases is reused as boiler room feedwater, reducing water waste and realizing the effective recovery and recycling of waste steam heat, thus improving the practicality and economy of the steam condensate tank waste heat recovery device.

[0022] In this waste heat recovery device for steam condensate tank, the condensate after being treated by the separator flows into the condensation box through the delivery pipe. At this time, the cooling water behind the baffle continuously cools the curved cooling pipe, and the curved cooling pipe further plays a role in heat preservation or temperature stabilization of the condensate in the condensation box. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the waste heat recovery device for the steam condensate tank of this utility model;

[0024] Figure 2 This is a schematic diagram of the entire utility model from the right side.

[0025] Figure 3 This is a schematic diagram showing the position of the partition in this utility model;

[0026] Figure 4 This is a schematic diagram of the curved cooling pipe shape of this utility model.

[0027] In the diagram: 1. Mounting base plate; 2. Condensate box; 3. Protective door; 4. Connecting pipe; 5. Condensate pump; 6. First pressure gauge interface; 7. Condenser; 8. Second pressure gauge interface; 9. Separator; 10. Exhaust port; 11. First thermometer interface; 12. Delivery pipe; 13. Drain port; 14. Delivery box; 15. Air inlet; 16. L-shaped support frame; 17. Curved cooling pipe; 18. Filter screen; 19. Inclined plate; 20. T-shaped sliding plate; 21. Baffle plate; 22. T-shaped chute; 23. Cooling water outlet; 24. Air outlet; 25. Cooling water inlet; 26. Second thermometer interface. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-4 This utility model provides a new technical solution: a waste heat recovery device for steam condensate tank, including a mounting base plate 1, a waste heat recovery component, the waste heat recovery component including a condensation box 2, the condensation box 2 is fixedly connected to the upper surface of the mounting base plate 1, a partition plate 21 is fixedly connected to the middle position inside the condensation box 2, and a plurality of curved cooling pipes 17 are fixedly connected to the rear surface of the partition plate 21.

[0030] Among them, the front ends of multiple curved cooling pipes 17 all penetrate through the front surface of the partition 21, and the ends of multiple curved cooling pipes 17 away from the partition 21 all penetrate through the upper surface of the condenser box 2.

[0031] Among them, one end of the multiple curved cooling pipes 17 located outside the condensation box 2 is fixedly connected to a conveying box 14 that communicates with its interior, and the conveying box 14 is fixedly connected to the condensation box 2.

[0032] Among them, the opposite surfaces of the partition 21 and the inner wall of the condenser box 2 are fixedly connected with inclined plates 19. The two inclined plates 19 are arranged one above the other, with the inclined plate 19 connected to the partition 21 located on the upper side.

[0033] Furthermore, multiple T-shaped grooves 22 are provided on the upper surface of both inclined plates 19, and T-shaped slide plates 20 are slidably connected to the inner walls of the multiple T-shaped grooves 22. Filter screens 18 are fixedly installed on the upper surface of the multiple T-shaped slide plates 20.

[0034] Furthermore, a protective door 3 is provided on the left side of the condenser box 2, a cooling water inlet pipe communicating with its interior is fixedly connected to the left side of the condenser box 2, and a cooling water outlet pipe communicating with its interior is fixedly connected to the right side of the condenser box 2.

[0035] Furthermore, the waste heat recovery assembly also includes two L-shaped support frames 16, with a condenser 7 and a separator 9 fixedly connected to the left side of the two L-shaped support frames 16 respectively, and the separator 9 is located on the rear side of the condenser 7.

[0036] Furthermore, a conveying pipe 12 communicating with the interior of the separator 9 is fixedly connected to the lower part of the rear surface of the separator 9, and the end of the conveying pipe 12 away from the separator 9 penetrates into the interior of the conveying box 14.

[0037] Furthermore, an exhaust port 10 is fixedly connected to the upper surface of the condenser 7 and the separator 9, and a drain port 13 is fixedly connected to the lower surface of both the condenser 7 and the separator 9.

[0038] The condenser 7 and the separator 9 are both provided with a first thermometer interface 11 on the left side, and a first pressure gauge interface 6 is provided on the lower left side of the condenser 7.

[0039] Furthermore, a second thermometer interface 26 is provided on the upper left side of the condenser 7, and a second pressure gauge interface 8 is provided on the upper left side of both the condenser 7 and the separator 9.

[0040] A cooling water outlet 23 is fixedly connected to the upper part of the outer surface of the condenser 7, and an air inlet 15 is fixedly connected to the upper part of the outer surface of the condenser 7.

[0041] Furthermore, an air outlet 24 is fixedly connected to the outer surface of the separator 9, and a cooling water inlet 25 is fixedly connected to the outer surface of the separator 9.

[0042] A condensate pump 5 is fixedly installed on the upper surface of the mounting base plate 1. A connecting pipe 4 is fixedly connected to the input end of the condensate pump 5, and the rear end of the connecting pipe 4 penetrates into the interior of the condensation box 2.

[0043] Furthermore, when using the waste heat recovery device of the steam condensate tank, first connect the external cooling water pipe to the cooling water inlet pipe, then connect the external cooling water drain pipe to the cooling water outlet pipe, and inject cooling water into the space behind the partition 21 to cool down the multiple curved cooling pipes 17.

[0044] Among them, the deaerators and exhaust steam of boilers 1# / 2# / 3# / 4# are transported to the condenser 7 through the air inlet 15. At this time, the demineralized water station feedwater (cooling water) with a temperature of <65°C and a pressure of 0.4MPa introduced into the condenser 7 exchanges heat with the exhaust steam, and the exhaust steam is initially cooled during the cooling process.

[0045] After heat exchange in condenser 7, the exhaust steam is cooled to about 90°C to form condensate. The condensate then flows into separator 9 (vapor-liquid separator). Cooling water is continuously introduced into separator 9 to further exchange heat with the condensate, causing the condensate temperature to continue to drop to about 75°C.

[0046] Inside the separator 9, oxygen and non-condensable gases contained in the condensate are removed, and the removed gases are discharged through the condenser 7 and the exhaust port 10 on the upper surface of the separator 9 to ensure the purity of the condensate.

[0047] The condensate after being processed by the separator 9 flows into the condensation box 2 through the delivery pipe 12. At this time, the cooling water behind the partition 21 continuously cools the curved cooling pipe 17, and the curved cooling pipe 17 further plays the role of heat preservation or temperature stabilization for the condensate in the condensation box 2.

[0048] Among them, the condensate pump 5 is started, and the condensate pump 5 draws out the condensate in the condensate box 2 through the connecting pipe 4 and sends it back to the boiler room water supply pipeline to realize the recycling of condensate.

[0049] Among them, the first thermometer interface 11 and the second thermometer interface 26 can monitor the temperature inside the condenser 7 and the separator 9 in real time, and the first pressure gauge interface 6 and the second pressure gauge interface 8 can monitor the internal pressure, which facilitates timely control of the heat exchange process.

[0050] Through two-stage heat exchange between condenser 7 and separator 9, the temperature of the exhaust steam is gradually reduced from high temperature to about 75°C, improving the waste heat recovery efficiency. At the same time, the condensate after removing oxygen and non-condensable gases is reused as boiler room feedwater, reducing water waste and realizing the effective recovery and recycling of exhaust steam waste heat, thereby improving the practicality and economy of the steam condensate tank exhaust steam waste heat recovery device.

[0051] Structural Description:

[0052] Condenser 2:

[0053] Fixed to the upper surface of the mounting base plate 1, with a partition 21 and a curved cooling pipe 17 inside, and a protective door 3 connected to the left side, it is used to contain condensate and achieve heat exchange through cooling water. It is the core box for condensate storage and temperature stability.

[0054] Protective door 3:

[0055] Located on the left side of the condenser box 2, the openable design facilitates the maintenance of the curved cooling pipe 17 and filter screen 18 inside the box. When closed, it keeps the inside of the box sealed to prevent cooling water leakage.

[0056] Connecting pipe 4:

[0057] One end is connected to the input end of the condensate pump 5, and the other end passes through the condensate box 2, which transports the condensate in the condensate box to the condensate pump, serving as a transport channel for condensate recycling.

[0058] Condensate pump 5:

[0059] Fixed to the upper surface of the mounting base plate 1, the condensate in the condensation box 2 is drawn out through the connecting pipe 4 and transported back to the boiler room water supply pipeline, realizing the recycling of condensate and serving as the power source for water circulation.

[0060] First pressure gauge interface 6:

[0061] Located on the lower left side of condenser 7, a pressure gauge is connected to monitor the pressure inside the condenser, ensuring that the pressure remains stable at around 0.4 MPa during heat exchange and guaranteeing the safe operation of the system.

[0062] Condenser 7:

[0063] Fixed on the L-shaped support frame 16, the left side is equipped with thermometer and pressure gauge interfaces, and the upper part is connected to the cooling water outlet 23 and the air inlet 15. The interior exchanges heat with the exhaust steam and cooling water to achieve the initial cooling of the exhaust steam to about 90°C.

[0064] Second pressure gauge interface 8:

[0065] They are respectively installed on the upper left side of condenser 7 and separator 9, and connected to pressure gauges to monitor the internal pressure of both, assisting in the regulation of heat exchange efficiency and ensuring system pressure balance.

[0066] Separator 9:

[0067] Located behind the condenser 7 and fixed on the L-shaped support frame 16, it receives the condensate output from the condenser, further cools it to 75°C, removes oxygen and non-condensable gases, and improves the purity of the condensate.

[0068] Exhaust port 10:

[0069] They are fixed on the upper surfaces of the condenser 7 and the separator 9, respectively, to discharge non-condensable gases generated during the heat exchange process and prevent gas accumulation from affecting the heat exchange efficiency.

[0070] First thermometer interface 11:

[0071] These devices are respectively installed on the left side of condenser 7 and separator 9, and connected to thermometers to monitor the internal medium temperature, monitor the exhaust steam cooling progress in real time, and ensure that the cooling effect meets the standards.

[0072] Delivery pipe 12:

[0073] The separator 9 is connected to the condenser 2 below its rear surface, and the condensate treated by the separator is transported to the condenser for storage. This is the transport channel for condensate from the separator to the condenser.

[0074] Drainage port 13:

[0075] They are fixed to the lower surfaces of the condenser 7 and separator 9 respectively, and are used to drain residual water from the equipment, making it easy to empty the interior during maintenance or media replacement, and preventing the accumulation of impurities.

[0076] Conveyor box 14:

[0077] Fixed to the upper surface of the condenser 2, it connects to the upper ends of multiple curved cooling pipes 17, and connects the external pipeline to the curved cooling pipes, serving as the inlet for exhaust steam or condensate to enter the curved cooling pipes.

[0078] Air intake 15:

[0079] Fixed above the outer surface of condenser 7, it is used to input the exhaust steam from the deaerators of boilers #1 / #2 / #3 / #4 and for heat exchange in the condenser.

[0080] L-shaped support frame 16:

[0081] Fixed to the upper surface of the mounting base plate 1, the left side supports the condenser 7 and the separator 9, ensuring that both are at the same level, providing a stable mounting base for the heat exchange components.

[0082] Curved cooling pipe 17:

[0083] Fixed to the rear surface of the partition 21 of the condenser box 2, the front end penetrates the partition and the rear end is connected to the outside through the connecting pipe 14. Exhaust steam or condensate flows inside and is cooled by the cooling water in the condenser box to achieve waste heat recovery.

[0084] Filter 18:

[0085] The T-shaped slide plate 20, placed on the inclined plate 19, is used to filter impurities in the condensate water, preventing impurities from entering the condensate pump or pipeline and causing blockage, thus ensuring smooth circulation.

[0086] Inclined plate 19:

[0087] Fixed to the partition 21 and inner wall of the condenser box 2, distributed vertically, with T-shaped grooves 22 on the surface to support the filter screen 18 and guide the flow of condensate water, facilitating the sedimentation and filtration of impurities.

[0088] T-shaped skateboard 20:

[0089] The filter screen 18 is placed on the upper surface of the sliding connection within the T-shaped groove 22, making it easy to remove the filter screen for cleaning or replacement, ensuring a continuous and stable filtration effect.

[0090] Partition 21:

[0091] Fixed in the middle of the condenser box 2, the box is divided into front and rear parts. The rear side contains cooling water and the front side stores condensate. The curved cooling pipe 17 is fixed on the rear surface of the partition, which is a separation structure for heat exchange.

[0092] T-shaped groove 22:

[0093] The filter screen 18 is installed on the upper surface of the inclined plate 19 and slides in conjunction with the T-shaped slide plate 20 to provide guidance for the installation and removal of the filter screen 18, ensuring that the filter screen is placed flat and the filtration area is maximized.

[0094] Cooling water outlet 23:

[0095] Fixed above the outer surface of condenser 7, it discharges the cooling water after heat exchange with exhaust steam, allowing the heated cooling water to circulate to the outside for treatment, thus maintaining the cooling efficiency inside the condenser.

[0096] Vent 24:

[0097] Fixed to the outer surface of separator 9, it is used to discharge a small amount of uncondensed exhaust steam inside the separator, to avoid excessive pressure and ensure safe operation of the equipment.

[0098] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for steam condensate tank exhaust steam, characterized in that, include: Install base plate (1); Waste heat recovery assembly, including condenser box (2), condenser box (2) is fixedly connected to the upper surface of mounting base plate (1), partition plate (21) is fixedly connected to the middle position inside condenser box (2), and multiple curved cooling pipes (17) are fixedly connected to the rear surface of partition plate (21). Among them, the front ends of multiple curved cooling pipes (17) all penetrate through the front surface of the partition (21), and the ends of multiple curved cooling pipes (17) away from the partition (21) all penetrate through the upper surface of the condenser box (2); Among them, one end of multiple curved cooling pipes (17) located outside the condenser (2) is fixedly connected to a conveying box (14) that communicates with its interior, and the conveying box (14) is fixedly connected to the condenser (2); Among them, the partition (21) and the inner wall of the condenser (2) are fixedly connected with inclined plates (19), the two inclined plates (19) are set up one above the other, and the inclined plate (19) connected to the partition (21) is located on the upper side.

2. The waste heat recovery device for steam condensate tank according to claim 1, characterized in that: The upper surfaces of the two inclined plates (19) are provided with multiple T-shaped grooves (22), and the inner walls of the multiple T-shaped grooves (22) are slidably connected with T-shaped slide plates (20). The upper surfaces of the multiple T-shaped slide plates (20) are fixedly installed with filter screens (18).

3. The waste heat recovery device for steam condensate tank according to claim 1, characterized in that: A protective door (3) is provided on the left side of the condenser (2). A cooling water inlet pipe communicating with the interior is fixedly connected to the left side of the condenser (2). A cooling water outlet pipe communicating with the interior is fixedly connected to the right side of the condenser (2).

4. The waste heat recovery device for steam condensate tank according to claim 1, characterized in that: The waste heat recovery assembly also includes two L-shaped support frames (16), with a condenser (7) and a separator (9) fixedly connected to the left side of the two L-shaped support frames (16), and the separator (9) is located on the rear side of the condenser (7).

5. The waste heat recovery device for steam condensate tank according to claim 4, characterized in that: A conveying pipe (12) communicating with the interior is fixedly connected to the lower part of the rear surface of the separator (9), and the end of the conveying pipe (12) away from the separator (9) penetrates into the interior of the conveying box (14).

6. The waste heat recovery device for steam condensate tank according to claim 4, characterized in that: The upper surfaces of the condenser (7) and the separator (9) are fixedly connected with exhaust ports (10), and the lower surfaces of the condenser (7) and the separator (9) are fixedly connected with drain ports (13). The condenser (7) and the separator (9) are both provided with a first thermometer interface (11) on the left side, and a first pressure gauge interface (6) is provided on the lower left side of the condenser (7).

7. A waste heat recovery device for steam condensate tank according to claim 4, characterized in that: A second thermometer interface (26) is provided on the upper left side of the condenser (7), and a second pressure gauge interface (8) is provided on the upper left side of both the condenser (7) and the separator (9). Among them, a cooling water outlet (23) is fixedly connected to the upper part of the outer surface of the condenser (7), and an air inlet (15) is fixedly connected to the upper part of the outer surface of the condenser (7).

8. A waste heat recovery device for steam condensate tank according to claim 4, characterized in that: An air outlet (24) is fixedly connected to the outer surface of the separator (9), and a cooling water inlet (25) is fixedly connected to the outer surface of the separator (9). A condensate pump (5) is fixedly installed on the upper surface of the mounting base plate (1). A connecting pipe (4) is fixedly connected to the input end of the condensate pump (5). The rear end of the connecting pipe (4) penetrates into the interior of the condenser box (2).

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