Deaerator dead steam recovery device
By designing a deaerator exhaust steam recovery device, the steam in the exhaust steam is condensed into condensate and hot water is generated using a heat exchange box and a cold water channel. This solves the problem of resource waste caused by direct exhaust steam discharge and achieves the recovery of exhaust steam energy and energy saving effect.
Patent Information
- Application Number
- CN202422864526.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-22
AI Technical Summary
When the deaerator is running, the exhaust steam is directly discharged into the air, resulting in the waste of water vapor and heat, and causing energy loss.
Design a deaerator exhaust steam recovery device that condenses the steam in the exhaust steam into condensate through a heat exchange box and a cold water channel, and transfers the heat to the cold water to generate hot water, which then enters a steam generator to generate steam, thus recovering the steam and heat energy in the exhaust steam.
It realizes the recovery of steam and heat energy in the exhaust steam, avoids resource waste, and reduces the energy consumption of the steam generator, thus achieving energy-saving effect.
Smart Images
Figure CN223580697U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of deaerator exhaust steam recovery technology, and in particular to a deaerator exhaust steam recovery device. BACKGROUND
[0002] The deaerator plays a crucial role in the boiler and heating system, its role not only in the removal of oxygen in the feed water, so as to prevent equipment corrosion, but also to improve the feed water temperature, enhance the efficiency of the system. The realization of these functions can not be separated from the working principle of deaerator, which is based on Henry's law and Gay-Lussac law, using physical principles to strip oxygen and other gases from water.
[0003] In the working process of deaerator, the feed water is first heated to the saturation temperature under the working pressure of the deaerator. Only at a certain temperature and pressure, the oxygen and other gases in the water can be effectively removed. Generally speaking, the deaerator sprays water into fine droplets through a nozzle, which exchanges heat with the heated steam. In this process, the water will gradually be heated to the saturation temperature, while exchanging heat with the steam.
[0004] When the water reaches the saturation temperature, the oxygen and other gases in the water will be separated due to the decrease of partial pressure. This is based on the principle of Gay-Lussac law, according to the law that the partial pressure of a gas dissolved in a liquid is proportional to the partial pressure of the gas in the gas phase. Therefore, as the water temperature rises, the solubility of oxygen and other gases will decrease, thus being released from the water.
[0005] Finally, the deaerator removes the oxygen and other gases in the water from the system through the exhaust system. This process ensures that the water quality in the heating system remains good, reduces the corrosion effect of oxygen on equipment, and also improves the efficiency and stability of the entire system.
[0006] For the related technology in the above, the inventor believes that at present, when the deaerator is running, the exhaust steam is directly exhausted and dispersed into the atmosphere. However, the exhaust steam still contains a large amount of heat and water vapor during the exhaust process, and the exhaust steam is directly exhausted, resulting in waste of water vapor and heat in the exhaust steam, causing energy loss. CONTENT OF THE INVENTION
[0007] In order to solve the problem that the deaerator directly exhausts the exhaust steam during operation, resulting in waste of water vapor and heat in the exhaust steam, the present application provides a deaerator exhaust steam recovery device.
[0008] The deaerator exhaust steam recovery device provided by the present application adopts the following technical scheme:
[0009] The application discloses a deaerator exhaust steam recycling device, which comprises a deaerator, a heat exchange box connected to the gas outlet end of the deaerator, a heat exchange assembly arranged in the heat exchange box, and a circulating assembly arranged on the side wall of the heat exchange box and connected to the gas outlet end of the deaerator.
[0010] Optionally, the circulating assembly comprises a circulating pipe, one end of the circulating pipe is communicated with the heat exchange box, the other end of the circulating pipe is connected with a steam generator, and the gas outlet end of the steam generator is connected to the gas outlet end of the deaerator.
[0011] Optionally, the heat exchange assembly comprises a plurality of partitions, the plurality of partitions are arranged in a staggered manner along the height direction, one end of each partition is fixedly connected to the heat exchange box, and the other end of each partition is spaced apart from the inner wall of the heat exchange box, and the plurality of partitions form a serpentine exhaust steam passage in the heat exchange box.
[0012] Optionally, a cold water pipe is vertically arranged in the heat exchange box, the cold water pipe extends from the side wall of the partition, the cold water pipe is opposite to the exhaust steam passage, and the top end of the cold water pipe is communicated with the circulating assembly.
[0013] Optionally, a plurality of cold water pipes are arranged in an array, and adjacent two rows of the cold water pipes are arranged in a staggered manner.
[0014] Optionally, a baffle is fixedly connected to the inside of the cold water pipe, a plurality of baffles are arranged along the height direction, and the plurality of baffles are arranged in a staggered manner along the height direction, and the plurality of baffles separate the inside of the cold water pipe to form a serpentine cold water passage.
[0015] Optionally, a water inlet chamber is arranged at the bottom end of the cold water pipe, the water inlet chamber is opposite to the plurality of cold water pipes, a water outlet chamber is arranged at the top end of the cold water pipe, the water outlet chamber is opposite to the plurality of cold water pipes, and the medium in the cold water pipe flows from one side of the water inlet chamber to one side of the water outlet chamber.
[0016] Optionally, the gas outlet end of the deaerator is connected to the top end of the exhaust steam passage, and the cross section of the connection position between the deaerator and the exhaust steam passage is smaller than the cross section of the exhaust steam passage.
[0017] Optionally, the top wall of the partition is arranged in an inclined manner, and the inclination of the partition is gradually downward from one side close to the fixed end of the partition to the other side away from the fixed end of the partition.
[0018] Optionally, a drain tank is connected to the bottom end of the heat exchange box, the inside of the drain tank is communicated with the bottom end of the exhaust steam passage, an air outlet pipe is fixedly connected to the side wall of the heat exchange box and communicated with the tail end of the exhaust steam passage.
[0019] To sum up, the present application includes at least one of the following beneficial technical effects:
[0020] 1. By the inside of the heat exchange box being provided with a steam exhaust passage and a cold water passage, one end of the steam exhaust passage is connected with the steam exhaust outlet of the deaerator, and the cold water passage penetrates through the steam exhaust passage, the other end of the steam exhaust passage is connected with a drain tank and an exhaust pipe, one end of the cold water passage is connected with a cold water source, the other end of the cold water passage is connected with a steam generator, and the steam generator is connected with the steam inlet of the deaerator, so that in use, the steam exhaust discharged by the deaerator enters the steam exhaust passage to exchange heat with the cold water in the cold water passage, the steam in the steam exhaust is condensed into condensed water and collected through the drain tank, and the cold water absorbs the heat in the steam to form hot water, which enters the steam generator to generate water vapor, and the water vapor enters the deaerator to perform deaeration work, which not only recovers the steam and heat energy in the steam exhaust, avoids resource waste, but also reduces the energy consumption of the steam generator by heating the hot water into water vapor, thereby having the effect of energy saving. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is the overall structure schematic diagram of a deaerator steam exhaust recovery device in the embodiment of the present application.
[0022] Figure 2 is the internal structure schematic diagram of a heat exchange box of a deaerator steam exhaust recovery device in the embodiment of the present application.
[0023] Figure 3 is the arrangement schematic diagram of a cold water pipe of a deaerator steam exhaust recovery device in the embodiment of the present application.
[0024] Figure 4 is the internal structure schematic diagram of a cold water pipe of a deaerator steam exhaust recovery device in the embodiment of the present application.
[0025] BRIEF DESCRIPTION OF DRAWINGS: 1, deaerator; 2, heat exchange box; 21, steam exhaust passage; 22, water inlet chamber; 23, water outlet chamber; 24, drain tank; 25, exhaust pipe; 3, heat exchange assembly; 31, partition; 32, cold water pipe; 321, baffle; 322, cold water passage; 4, circulating assembly; 41, circulating pipe; 42, steam generator. DETAILED DESCRIPTION
[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0027] Many particular details are set forth in the following description in order to provide a thorough understanding of the application. However, the application can be practiced according to the claims without some or all of these details. Indeed, some embodiments can be more highly appreciated by certain of the details described below, and therefore, no limitation of the scope of the application should be implied by any of the details set forth in the following description.
[0028] The application will be described in greater detail with reference to the accompanying drawings, in which Figures 1-4 The application will be described in greater detail with reference to the accompanying drawings, in which
[0029] The application discloses a deaerator exhaust steam recovery device. Referring to Figure 1 、 Figure 2 A deaerator exhaust steam recovery device comprises a deaerator 1, an exhaust end of the deaerator 1 is arranged at the top end of the deaerator 1, and a heat exchange box 2 is arranged at one side of the deaerator 1, and the heat exchange box 2 is connected to the exhaust end of the deaerator 1 through a pipeline. A heat exchange assembly 3 is arranged in the heat exchange box 2, and the heat exchange assembly 3 exchanges heat and cools the high-temperature exhaust steam from the deaerator 1.
[0030] The heat exchange assembly 3 comprises a plurality of partitions 31 arranged in the heat exchange box 2, the partitions 31 are arranged in the height direction of the heat exchange box 2, and the plurality of partitions 31 are staggered in the height direction, one end of each partition 31 is fixedly connected to the inner side wall of the heat exchange box 2, and the other end of each partition 31 is spaced apart from the inner side wall of the heat exchange box 2.
[0031] The partition 31 comprises a fixed end fixedly connected to the heat exchange box 2 and a free end away from the side wall of the heat exchange box 2. The top wall of the partition 31 is inclined, and the top wall of the partition 31 is inclined downward from the side close to the fixed end to the side away from the fixed end, so as to facilitate the flow of condensed water from the fixed end to the side of the free end of the partition 31, and then gradually flow down along the surface of the partition 31 to collect the condensed water.
[0032] The top end of the exhaust steam passage 21 is connected to the pipeline for discharging the exhaust steam from the deaerator 1, and the opening section between the pipeline and the exhaust steam passage 21 is opposite to the section of the exhaust steam passage 21, so that the exhaust steam can flow slowly in the exhaust steam passage 21, thereby prolonging the heat exchange time and improving the heat exchange effect.
[0033] The application will be described in greater detail with reference to the accompanying drawings, in which Figure 2 、 Figure 3The cold water pipe 32 is vertically arranged inside the heat exchange box 2, two ends of the cold water pipe 32 are fixedly connected with the heat exchange box 2 respectively, the cold water pipe 32 passes through the side wall of the partition plate 31, and the cold water pipe 32 is fixedly connected with the partition plate 31. The cold water pipe 32 is arranged in multiple numbers inside the heat exchange box 2, and the multiple cold water pipes 32 are arranged in a matrix structure, two adjacent rows of the cold water pipes 32 are arranged staggeredly, and the arrangement of the cold water pipe 32 is relatively coincident with the inside of the exhaust steam channel 21.
[0034] With reference to Figure 3 , Figure 4 The horizontal section of the cold water pipe 32 is of a rectangular structure, and the baffle 321 is horizontally arranged inside the cold water pipe 32, the baffle 321 is arranged in multiple numbers along the height direction, the multiple baffles 321 are arranged staggeredly in the height direction, one end of the baffle 321 is fixedly connected with the inner side wall of the cold water pipe 32, and the other end of the baffle 321 is spaced apart from the inner side wall of the cold water pipe 32 to form a serpentine cold water channel 322. The low-temperature medium is discharged from the top end after passing through the cold water channel 322 from the bottom end, and the cold water channel 322 arranged can increase the heat exchange efficiency of the low-temperature medium inside the cold water pipe 32, thereby improving the heat exchange effect between the exhaust steam outside and the cold water pipe 32.
[0035] With reference to Figure 1 , Figure 2 The bottom end of the heat exchange box 2 is fixedly connected with the water inlet chamber 22, the top end of the heat exchange box 2 is fixedly connected with the water outlet chamber 23, the water inlet chamber 22 is relatively communicated with the multiple cold water pipes 32, and the water outlet chamber 23 is relatively communicated with the multiple cold water pipes 32. The water inlet end of the cold water is relatively communicated with the water inlet chamber 22, so that the low-temperature medium enters the inside of the cold water pipe 32 from the water inlet chamber 22, exchanges heat in the inside of the cold water pipe 32, and then enters the inside of the water outlet chamber 23. The position of the top end of the heat exchange box 2 relative to the water outlet chamber 23 is relatively communicated with the circulating assembly 4, and the medium after heat exchange is brought into the inside of the circulating assembly 4 for circulation.
[0036] The exhaust steam enters the inside of the heat exchange box 2 from the top end of the exhaust steam channel 21, the surface of the cold water pipe 32 is cooled by the low-temperature medium in the inside of the cold water pipe 32, the exhaust steam in the inside of the exhaust steam channel 21 is in contact with the low-temperature cold water pipe 32 to exchange heat, the exhaust steam is cooled, and the exhaust steam continuously exchanges heat with the cold water pipe 32 while moving in the inside of the exhaust steam channel 21, so that the temperature of the exhaust steam is gradually reduced.
[0037] The bottom end of the heat exchange box 2 is provided with a drain tank 24, which is in communication with the inside of the heat exchange box 2, and the inside of the heat exchange box 2 is in communication with the side close to the tail end of the exhaust steam passage 21, so that the condensed water in the heat exchange box 2 can be collected through the drain tank 24. The bottom end of the side wall of the heat exchange box 2 is fixedly connected with an air outlet pipe 25 on the side close to the tail end of the exhaust steam passage 21, which is used for discharging the exhaust steam after heat exchange.
[0038] The circulating assembly 4 comprises a circulating pipe 41 connected with the top end of the heat exchange box 2, and the inside of the circulating pipe 41 is in communication with the inside of the water outlet chamber 23, so that the medium in the water outlet chamber 23 can flow circularly through the circulating pipe 41.
[0039] The end of the circulating pipe 41 away from the heat exchange box 2 is fixedly connected with a steam generator 42, the inlet end of the steam generator 42 is fixedly connected with the circulating pipe 41 and is in communication, and the air outlet end of the steam generator 42 is fixedly connected with the air inlet end of the deaerator 1 and is in communication.
[0040] The low-temperature medium in the cold water pipe 32 enters from the bottom end of the cold water pipe 32, and after heat exchange with the high-temperature exhaust steam in the cold water pipe 32, the temperature of the low-temperature medium gradually rises and enters the inside of the steam generator 42 from the position of the circulating pipe 41, and then flows into the deaerator 1 again through the steam generator 42, thereby recycling the steam and heat energy in the exhaust steam and avoiding resource waste. Moreover, the steam generator 42 heats the hot water into water vapor, which can reduce the energy consumption of the steam generator 42 and has the effect of energy saving.
[0041] The exhaust steam discharged from the deaerator 1 is transported into the exhaust steam passage 21 in the heat exchange box 2, and the cold water source transports cold water into the cold water pipe 32. When the cold water flows along the cold water passage 322, the exhaust steam flows along the exhaust steam passage 21. In the process of flowing, the exhaust steam exchanges heat with the cold water, the cold water absorbs the heat in the exhaust steam, and forms hot water, and the steam in the exhaust steam is condensed into condensed water, which flows into the drain tank 24 for temporary storage and is finally transported to the demineralized water device.
[0042] The generated hot water enters the steam generator 42 from the circulating pipe 41, the steam generator 42 heats the hot water into water vapor, and the water vapor reenters the deaerator 1 for deaeration, thereby not only recycling the steam and heat energy in the exhaust steam and avoiding resource waste, but also the steam generator 42 heats the hot water into water vapor, which can reduce the energy consumption of the steam generator 42 and has the effect of energy saving.
[0043] In the present application, the term "a plurality of" refers to at least two or at least two more, unless otherwise expressly specified. The terms "mounting", "connected", "connecting", "fixed", and the like should be interpreted broadly, for example, "connected" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0044] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
Claims
1. A deaerator exhaust steam recovery device, characterized in that: It includes a deaerator (1), the outlet end of the deaerator (1) is connected to a heat exchange box (2), the heat exchange box (2) is provided with a heat exchange component (3), the side wall of the heat exchange box (2) is provided with a circulation component (4), and the tail end of the circulation component (4) is connected to the outlet end of the deaerator (1).
2. The deaerator exhaust steam recovery device according to claim 1, characterized in that: The circulation assembly (4) includes a circulation pipe (41), one end of which is connected to the heat exchange box (2), and the other end of which is connected to a steam generator (42). The outlet end of the steam generator (42) is connected to the outlet end of the deaerator (1).
3. The deaerator exhaust steam recovery device according to claim 1, characterized in that: The heat exchange assembly (3) includes multiple partitions (31), which are staggered along the height direction. One end of each partition (31) is fixedly connected to the heat exchange box (2), and the other end of each partition (31) is spaced from the inner wall of the heat exchange box (2). The multiple partitions (31) form a steam exhaust channel (21) inside the heat exchange box (2).
4. The deaerator exhaust steam recovery device according to claim 3, characterized in that: The heat exchange box (2) is vertically equipped with a cold water pipe (32), which extends from the side wall of the partition (31). The cold water pipe (32) is opposite to the exhaust steam channel (21), and the top end of the cold water pipe (32) is connected to the circulation component (4).
5. The deaerator exhaust steam recovery device according to claim 4, characterized in that: Multiple cold water pipes (32) are provided, and the multiple cold water pipes (32) are arranged in an array, and the cold water pipes (32) in adjacent columns are staggered.
6. The deaerator exhaust steam recovery device according to claim 4, characterized in that: The cold water pipe (32) is fixedly connected to a baffle (321). Multiple baffles (321) are arranged along the height direction and are staggered along the height direction. The multiple baffles (321) divide the interior of the cold water pipe (32) to form a serpentine cold water channel (322).
7. The deaerator exhaust steam recovery device according to claim 4, characterized in that: The bottom end of the cold water pipe (32) is provided with an inlet chamber (22), which is opposite to a plurality of cold water pipes (32). The top end of the cold water pipe (32) is provided with an outlet chamber (23), which is opposite to a plurality of cold water pipes (32). The medium inside the cold water pipe (32) flows from one side of the inlet chamber (22) to one side of the outlet chamber (23).
8. The deaerator exhaust steam recovery device according to claim 3, characterized in that: The outlet end of the deaerator (1) is connected to the top end of the exhaust steam channel (21), and the cross section at the connection position between the deaerator (1) and the exhaust steam channel (21) is smaller than the cross section of the exhaust steam channel (21).
9. The deaerator exhaust steam recovery device according to claim 3, characterized in that: The top wall of the partition (31) is inclined, and the inclination of the partition (31) gradually slopes downward from the side near the fixed end of the partition (31) to the side away from the fixed end of the partition (31).
10. The deaerator exhaust steam recovery device according to claim 3, characterized in that: The bottom of the heat exchange box (2) is connected to a condensate tank (24), the interior of the condensate tank (24) is connected to the bottom of the exhaust steam channel (21), and an exhaust pipe (25) is fixedly connected to the side wall of the heat exchange box (2), the exhaust pipe (25) is connected to the tail end of the exhaust steam channel (21).