Energy-saving recovery system for steam condensate after flash evaporation

Abstract

The utility model discloses an energy-saving recovery system for steam condensate after flash evaporation, which belongs to the field of ammonium nitrate production, solves the problem that the steam condensate cannot be quickly and stably recovered during the existing ammonium nitrate production, and comprises a collection pipeline, a condensate concentration tank, a cooling component, a condensate recovery tank and a collection mechanism. By arranging the collecting mechanism and the cooling assembly, condensate from the ammonium nitrate system can be gathered and collected, then the condensate in the condensate concentration tank is subjected to flash evaporation due to the change of pressure values, steam is rapidly cooled through the flash evaporation cooler, and the ammonium nitrate system is cooled through the flash evaporation cooler. Steam is converted into liquid again and input into the condensate recovery tank, at the moment, steam interference in the condensate recovery tank is avoided, the phenomenon that a pump cannot be pressurized due to cavitation is avoided, the stability of equipment during operation is guaranteed, resource consumption during equipment operation is reduced, a larger pump does not need to be additionally arranged, and the cost is reduced. Therefore, the operation cost of the whole system is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of ammonium nitrate production, specifically relating to an energy-saving recovery system for flash evaporation of steam condensate. Background Technology

[0002] In existing ammonium nitrate production plants, the steam generated from the flash condensate recovery process is released into the atmosphere, resulting in waste. Furthermore, the steam condenses in the air, forming a large amount of mist, which can cause harm to operators, such as obstructed vision and burns. The condensation in the steam emission area also causes the ground to become damp, affecting the aesthetics of the production area.

[0003] Current methods for recovering flash steam primarily involve cooling the steam with cooling water. The cooling water's temperature is used to lower the steam temperature, causing it to condense. This method consumes a lot of cooling water and requires larger equipment. The condensate, after being mixed, needs a larger pump to pressurize and deliver, consuming more electricity. Furthermore, the cooling water used is recycled water, meaning the condensate cannot enter the demineralized water treatment system and can only be returned to the wastewater treatment system. This results in low utilization value of the condensate. Since the condensate is derived from the original demineralized water through heating and evaporation, its salt content is very low, making the cost of producing demineralized water several times lower than that of producing demineralized water from municipal water. The condensate also contains high-quality water. Therefore, existing flash steam recovery and condensation systems are not only larger and more expensive to build, but also have higher operating costs. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To address the problems mentioned in the background section, the present invention adopts the following technical solution.

[0006] An energy-saving condensate flash evaporation recovery system includes a collection pipe, a condensate collection tank, a cooling component, a condensate recovery tank, and a collection mechanism. A collection pipe for collecting and summing condensates is installed on one side of the condensate collection tank, and a cooling component for reducing the temperature of the condensates is installed on the other side of the condensate collection tank. A condensate recovery tank is installed on the side of the condensate collection tank, and a collection mechanism for automatically collecting condensates is installed on the surface of the condensate recovery tank.

[0007] As a preferred embodiment of this utility model, the cooling assembly includes a flash cooler, a steam input pipe, a liquid output pipe, a circulating water input pipe, and a circulating water output pipe. The flash cooler is disposed between the condensate collection tank and the condensate recovery tank. The steam input pipe is installed at the inlet end of the flash cooler and is connected to the interior of the condensate collection tank. The liquid output pipe is installed at the outlet end of the flash cooler and is connected to the condensate recovery tank. The surface of the flash cooler is provided with a circulating water input pipe and a circulating water output pipe for circulating cooling water.

[0008] As a preferred embodiment of the present invention, the cooling assembly further includes a balancing pipe, which is installed between the condensate collection tank and the condensate recovery tank. The balancing pipe is used to input the condensate inside the condensate recovery tank into the condensate collection tank.

[0009] As a preferred technical solution of this utility model, the collection mechanism includes a suction pipe, a first pump body, a connecting pipe, and a demineralized water system. The suction pipe is installed on the upper surface of the condensate recovery tank and is connected to the inside of the condensate recovery tank. The first pump body is installed at the end of the suction pipe, and the connecting pipe is installed at the output end of the first pump body. The condensate in the connecting pipe is transported to the demineralized water system at the end of the connecting pipe.

[0010] As a preferred technical solution of this utility model, the collection mechanism further includes a second pump body and a connecting pipe. The second pump body is disposed on the side of the first pump body, and the second pump body and the first pump body serve as backup pumps for each other. The second pump body is connected to the condensate recovery tank through a pipe, and a connecting pipe is installed at the output end of the second pump body. The connecting pipe is connected to the matching pipe.

[0011] As a preferred embodiment of this utility model, a liquid level detector is installed on the side of the condensate recovery tank to detect the liquid level height of the condensate inside the tank in real time.

[0012] As a preferred technical solution of this utility model, the collection pipe consists of three sets of collecting pipes and one set of conveying pipes. The three sets of collecting pipes are connected to the side of the conveying pipe, the conveying pipe is connected to the condensate collection tank, and a control valve is installed on the outside of the conveying pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, by setting up a collection mechanism and a cooling component, the condensate from the ammonium nitrate system can be collected and summarized. Then, due to pressure changes, the condensate in the collection tank undergoes flash evaporation. The steam is then rapidly cooled by a flash cooler and converted back into liquid before being fed into the condensate recovery tank. At this point, there is no steam interference in the condensate recovery tank, and the pump will not experience cavitation or pressure failure, ensuring the stability of the equipment operation, reducing resource consumption during operation, and eliminating the need for additional, larger pumps. This reduces the overall operating cost of the system. Furthermore, this system has a wide range of applications, not only for ammonium nitrate vapor recovery systems but also for vapor condensation systems of any other device. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model.

[0016] Figure 2 This is a plan view of the structure of the recycling system of this utility model.

[0017] Figure 3 This is a perspective view of the cooling component structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the collecting mechanism in this utility model.

[0019] Figure 5 This is a schematic diagram of the collection pipe structure in this utility model.

[0020] The correspondence between the labels and component names in the attached figures is as follows:

[0021] 1. Collection pipe; 2. Condensate collection tank; 3. Cooling assembly; 31. Flash cooler; 32. Steam input pipe; 33. Liquid output pipe; 34. Circulating water input pipe; 35. Circulating water output pipe; 36. Balancing pipe; 4. Condensate recovery tank; 5. Collection mechanism; 51. Suction pipe; 52. First pump body; 53. Matching pipe; 54. Demineralized water system; 55. Second pump body; 56. Connecting pipe. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0025] Depend on Figure 1 and Figure 2 As shown, this is a schematic diagram of the energy-saving recovery system for condensate flash evaporation in this embodiment, including a collection pipe 1, a condensate collection tank 2, a cooling component 3, a condensate recovery tank 4, and a collection mechanism 5. A collection pipe 1 for collecting and summing condensates is installed on one side of the surface of the condensate collection tank 2, and a cooling component 3 for reducing the temperature of the condensate is installed on the other side of the surface of the condensate collection tank 2. A condensate recovery tank 4 is installed on the side of the condensate collection tank 2, and a collection mechanism 5 for automatically collecting condensate is installed on the surface of the condensate recovery tank 4.

[0026] During operation, the condensates from the ammonium nitrate system are collected and then fed into the condensate collection tank 2 through collection pipe 1. Due to the pressure difference between collection pipe 1 and condensate collection tank 2, flash evaporation occurs in the condensate collection tank 2. The flash vapor enters the cooling component 3, where it is cooled and converted back into condensate, which is then fed into the condensate recovery tank 4. At this point, there is no steam interference in the condensate recovery tank 4, facilitating stable collection of the condensate by the subsequent collection mechanism 5. This ensures the stability of the collection mechanism 5 during operation and ensures the stable recovery of the condensate after flash evaporation.

[0027] From the appendix Figure 3 As shown, this is a schematic diagram of the cooling component 3 in this embodiment. The cooling component 3 includes a flash cooler 31, a steam input pipe 32, a liquid output pipe 33, a circulating water input pipe 34, and a circulating water output pipe 35. The flash cooler 31 is disposed between the condensate collection tank 2 and the condensate recovery tank 4. The steam input pipe 32 is installed at the inlet end of the flash cooler 31 and is connected to the interior of the condensate collection tank 2. The liquid output pipe 33 is installed at the outlet end of the flash cooler 31 and is connected to the condensate recovery tank 4. The surface of the flash cooler 31 is provided with a circulating water input pipe 34 and a circulating water output pipe 35 for circulating cooling water.

[0028] During operation, the condensate vapor generated by flash evaporation is introduced into the flash cooler 31 through the steam inlet pipe 32. Cooling water is introduced into the flash cooler 31 through the circulating water inlet pipe 34 and the circulating water outlet pipe 35 to cool the condensate vapor inside the flash cooler 31, allowing the vapor to be converted back into condensate. Finally, the condensate is introduced into the condensate recovery tank 4 through the liquid outlet pipe 33. At this time, there will be no steam interference in the condensate recovery tank 4, ensuring the stability of the operation of subsequent components.

[0029] From the appendix Figure 3 As shown, this is a schematic diagram of the cooling component 3 in this embodiment. The cooling component 3 also includes a balancing pipe 36, which is installed between the condensate collection tank 2 and the condensate recovery tank 4. The balancing pipe 36 is used to input the condensate inside the condensate recovery tank 4 into the condensate collection tank 2. During use, the installation of the balancing pipe 36 connects the condensate recovery tank 4 and the condensate collection tank 2. The condensate inside the condensate recovery tank 4 flows into the condensate collection tank 2 under the action of gravity, so that the liquid levels of the two are at the same height, which facilitates the operation of subsequent components.

[0030] From the appendix Figure 4 As shown, this is a schematic diagram of the structure of the collection mechanism 5 in this embodiment. The collection mechanism 5 includes a suction pipe 51, a first pump body 52, a connecting pipe 53, and a demineralized water system 54. The suction pipe 51 is installed on the upper surface of the condensate recovery tank 4 and is connected to the interior of the condensate recovery tank 4. The first pump body 52 is installed at the end of the suction pipe 51, and the connecting pipe 53 is installed at the output end of the first pump body 52. ​​The condensate in the connecting pipe 53 is transported to the demineralized water system 54 at the end of the connecting pipe 53.

[0031] During operation, the condensate in the condensate recovery tank 4 is extracted by the operation of the first pump body 52, and then input into the demineralized water system 54 through the cooperation of the connecting pipe 53. After being processed by the demineralized water system 54, the condensate is supplied to the demineralized water system for use by the whole plant.

[0032] From the appendix Figure 4As shown, this is a schematic diagram of the collection mechanism 5 in this embodiment. The collection mechanism 5 also includes a second pump body 55 and a connecting pipe 56. The second pump body 55 is disposed on the side of the first pump body 52. ​​The second pump body 55 and the first pump body 52 serve as backup pumps for each other. The second pump body 55 is connected to the condensate recovery tank 4 through a pipe. The output end of the second pump body 55 is equipped with a connecting pipe 56, which is connected to a matching pipe 53. In use, the second pump body 55 and the first pump body 52 serve as backup pumps for each other to ensure stable operation of the equipment. When the condensate level inside the condensate recovery tank 4 exceeds a predetermined height, the second pump body 55 or the first pump body 52 will automatically operate to stably extract the condensate inside the condensate recovery tank 4, ensuring the stability of the equipment during operation.

[0033] From the appendix Figure 3 As shown, a level detector is installed on the side of the condensate recovery tank 4 to detect the condensate level inside the tank in real time. During use, the level detector can accurately detect the condensate level inside the tank, facilitating the stable operation of the collection mechanism 5, collecting and absorbing excess condensate. When the condensate level inside the tank 4 is low, the collection mechanism 5 will stop operating and replenish the condensate inside the tank 4.

[0034] From the appendix Figure 5 As shown, the collection pipe 1 consists of three sets of collecting pipes and one set of conveying pipes. The three sets of collecting pipes are connected to the side of the conveying pipe, and the conveying pipe is connected to the condensate collection tank 2. A control valve is installed on the outside of the conveying pipe, which facilitates the collection and summarization of the condensates from the ammonium nitrate system during use, and inputs the condensates into the condensate collection tank 2.

[0035] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An energy-saving recovery system for steam condensate after flash evaporation, characterized in that, It includes a collection pipe (1), a condensate collection tank (2), a cooling component (3), a condensate recovery tank (4), and a collection mechanism (5). The condensate collection tank (2) has a collection pipe (1) installed on one side of its surface to collect and aggregate the condensate. The condensate collection tank (2) has a cooling component (3) installed on the other side of its surface to reduce the temperature of the condensate. The condensate collection tank (2) has a condensate recovery tank (4) installed on its side. The condensate recovery tank (4) has a collection mechanism (5) installed on its surface to automatically collect the condensate.

2. The energy-saving recovery system for flash evaporation of steam condensate according to claim 1, characterized in that: The cooling assembly (3) includes a flash cooler (31), a steam input pipe (32), a liquid output pipe (33), a circulating water input pipe (34), and a circulating water output pipe (35). The flash cooler (31) is located between the condensate collection tank (2) and the condensate recovery tank (4). The steam input pipe (32) is installed at the inlet end of the flash cooler (31) and is connected to the inside of the condensate collection tank (2). The liquid output pipe (33) is installed at the outlet end of the flash cooler (31) and is connected to the condensate recovery tank (4). The surface of the flash cooler (31) is provided with a circulating water input pipe (34) and a circulating water output pipe (35) for circulating cooling water.

3. The energy-saving recovery system for flash evaporation of steam condensate according to claim 2, characterized in that: The cooling assembly (3) also includes a balancing pipe (36), which is installed between the condensate collection tank (2) and the condensate recovery tank (4). The condensate inside the condensate recovery tank (4) is input into the condensate collection tank (2) by means of the balancing pipe (36).

4. The energy-saving recovery system for flash evaporation of steam condensate according to claim 1, characterized in that: The collection mechanism (5) includes a suction pipe (51), a first pump body (52), a connecting pipe (53), and a demineralized water system (54). The suction pipe (51) is installed on the upper surface of the condensate recovery tank (4) and is connected to the interior of the condensate recovery tank (4). The first pump body (52) is installed at the end of the suction pipe (51), and the connecting pipe (53) is installed at the output end of the first pump body (52). The condensate in the connecting pipe (53) is transported to the demineralized water system (54) at the end of the connecting pipe (53).

5. The energy-saving recovery system for flash evaporation of steam condensate according to claim 4, characterized in that: The collection mechanism (5) further includes a second pump body (55) and a connecting pipe (56). The second pump body (55) is located on the side of the first pump body (52). The second pump body (55) and the first pump body (52) serve as backup pumps for each other. The second pump body (55) is connected to the condensate recovery tank (4) through a pipe. The output end of the second pump body (55) is equipped with a connecting pipe (56), which is connected to the matching pipe (53).

6. The energy-saving recovery system for flash evaporation of steam condensate according to claim 1, characterized in that: A liquid level detector is installed on the side of the condensate recovery tank (4) to detect the liquid level of the condensate inside the condensate recovery tank (4) in real time.

7. The energy-saving recovery system for flash evaporation of steam condensate according to claim 1, characterized in that: The collection pipe (1) consists of three sets of collecting pipes and one set of conveying pipes. The three sets of collecting pipes are connected to the side of the conveying pipe, and the conveying pipe is connected to the condensate collection tank (2). A control valve is installed on the outside of the conveying pipe.

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