Circulating water condenser system

Abstract

The utility model belongs to the technical field of chemical production equipment, and relates to a circulating water condenser system which comprises a first condenser connected with a first cold water pipe, a first hot water pipe, a first air inlet pipe and a first exhaust pipe. The second condenser is connected with a second cold water pipe, a second hot water pipe, a second air inlet pipe and a second exhaust pipe, the second cold water pipe is connected with the first cold water pipe, the second hot water pipe is connected with the first hot water pipe, and the second air inlet pipe is connected with the first exhaust pipe; an air inlet pipeline of the transition condenser is connected with the first exhaust pipe through a first exhaust connector, and the air inlet pipeline of the transition condenser is connected with the second exhaust pipe through a second exhaust connector; when the first condenser leaks, plugging structures are arranged at the tail ends of the first cold water pipe, the first hot water pipe and the first exhaust pipe. The circulating water condenser has the advantage that the leaked circulating water condenser can be switched without stopping.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production equipment, and relates to a circulating water condenser system, especially suitable for solving the leakage problem of the circulating water condenser. Background Art

[0002] The leakage of the circulating water heat exchanger is an important factor affecting the quality of the circulating water in refining enterprises. It is very important to analyze the reasons for internal leakage and find solutions. This is because, after the process medium leaks, it is easy to form an oil film on the surface of the tube wall of the heat exchange equipment, thus affecting the heat transfer and cooling effect of the equipment. In addition, the leaked medium combines with the suspended solids in the circulating water to form dirt, especially the most dirt deposits in the parts with slower water flow. The thermal conductivity of dirt and scale is much lower than that of the metal tube, reducing the heat transfer efficiency of the heat exchange equipment, not only affecting the normal operation of the device, but also greatly increasing the energy consumption of the device.

[0003] In the initial stage of leakage, the circulating water system only shows a rapid increase in turbidity and COD, sometimes accompanied by peculiar smell and an increase in oil content. After the leakage lasts for a long time, the leaked medium will be consumed by microorganisms, and bacteria will multiply rapidly. The metabolites of bacteria and the sediment they adhere to form more harmful biological slime. This is because, where the biological slime adheres, it will become the part of under-deposit corrosion, ultimately causing the equipment to corrode and perforate, resulting in the leakage of the process medium and polluting the circulating water of the system, causing great harm to the circulating water system. On the other hand, due to the limited discharge of industrial water, the polluted circulating water or the water that still cannot be discharged in time after sterilization treatment, and the leakage source cannot be treated in time, forming a vicious cycle, posing a great threat to the long-term safe operation of the heat exchange equipment.

[0004] At present, after the leakage of the circulating water condenser occurs, it is usually hoped to cut out the leaked circulating water condenser. However, when cutting out the leaked condenser, a shutdown and maintenance method needs to be adopted, and the maintenance cycle is long. Therefore, how to achieve the non-stop cutting out of the leaked condenser has become an urgent problem to be solved. Summary of the Utility Model

[0005] A circulating water condenser system provided by the utility model can realize the non-stop switching of the leaked circulating water condenser.

[0006] The technical solution of the present utility model includes: a circulating water condenser system, comprising: a first condenser, the first condenser is connected with a first cold water pipe, a first hot water pipe, a first intake pipe and a first exhaust pipe; a second condenser, the second condenser is connected with a second cold water pipe, a second hot water pipe, a second intake pipe and a second exhaust pipe, the second cold water pipe is connected with the first cold water pipe, the second hot water pipe is connected with the first hot water pipe, and the second intake pipe is connected with the first exhaust pipe; a transition condenser, the intake pipeline of the transition condenser is connected with the first exhaust pipe through a first exhaust interface, and the intake pipeline of the transition condenser is connected with the second exhaust pipe through a second exhaust interface; when the first condenser leaks, sealing structures are arranged at the ends of the first cold water pipe, the first hot water pipe and the first exhaust pipe.

[0007] Preferably, the sealing structure is a blind plate, and the blind plate seals the end outlets of the first cold water pipe, the first hot water pipe and the first exhaust pipe.

[0008] Preferably, a connecting flange is provided at the connection between the end of the first cold water pipe and the first condenser, and the blind plate is arranged at the connecting flange.

[0009] Preferably, cut-in valves are provided on the second cold water pipe and the second hot water pipe, and when the first condenser leaks, the cut-in valves are in an open state.

[0010] Preferably, within a first preset time after the cut-in valves are opened, the opening degree of the cut-in valve of the second hot water pipe is 50% of the maximum opening degree.

[0011] Preferably, the exhaust pipeline of the transition condenser is connected with a transition exhaust interface, and the transition exhaust interface is connected with the second exhaust pipe.

[0012] Preferably, an anti-surge valve is provided at the end of the second exhaust pipe.

[0013] The beneficial effects of the present utility model are as follows: By designing a second condenser and connecting the circulating water pipe of the second condenser to the circulating water pipe of the first condenser, and at the same time, when the first condenser leaks, a plugging structure is designed at the end of its circulating water pipe to realize the switching of circulating water to the second condenser when the first condenser leaks; and, connecting the second intake pipe of the second condenser to the first exhaust pipe of the first condenser, and when the first condenser leaks, a plugging structure is designed at the end of the first exhaust pipe to realize the entry of reaction gas into the second condenser for cooling when the first condenser leaks. Furthermore, a transition condenser is designed, and the intake pipeline of the transition condenser is connected to the first exhaust pipe and the second exhaust pipe through the first exhaust interface and the second exhaust interface respectively, so as to realize that when the condenser is switched, part of the reaction gas enters the transition condenser for cooling, avoiding the problem of excessive reaction gas temperature caused by insufficient cooling of the reaction gas at the initial stage of condenser switching, and then resulting in the shutdown problem caused by excessive temperature at the outlet of the reaction gas compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for description in the embodiments. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the embodiment.

[0016] Wherein:

[0017] 1. First condenser, 11. First cold water pipe, 12. First hot water pipe, 13. First intake pipe, 14. First exhaust pipe, 2. Second condenser, 21. Second cold water pipe, 22. Second hot water pipe, 23. Second intake pipe, 24. Second exhaust pipe, 3. Transition condenser, 31. First exhaust interface, 32. Second exhaust interface, 33. Transition exhaust interface, 4. Blind plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to enable those skilled in the art to better understand the solution of the present utility model, the following further details the present utility model in conjunction with the drawings and specific embodiments.

[0019] In this text, terms such as "upper, lower, left, right, inner, outer" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the protection scope. Moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components. In addition, in the embodiments of the present utility model, "above", "below", etc. include the recited number.

[0020] Referring to Figure 1 , the circulating water condenser system of this embodiment includes a first condenser 1, and the first condenser 1 is connected with a first cold water pipe 11, a first hot water pipe 12, a first inlet gas pipe 13, and a first exhaust gas pipe 14. Among them, the high-temperature reaction gas enters the first condenser 1 through the first inlet gas pipe 13 for cooling. The cooled reaction gas is discharged from the first exhaust gas pipe 14, and for example, is discharged to a water washing tower under the drive of a reaction gas compressor. At the same time, the low-temperature circulating water for cooling the high-temperature reaction gas enters the first condenser 1 through the first cold water pipe 11. After exchanging heat with the high-temperature reaction gas in the first condenser 1, the heated circulating water is discharged from the first hot water pipe 12. For example, after entering a refrigeration device to cool the circulating water, it enters the first condenser 1 again in the form of low-temperature circulating water to cool the reaction gas for recycling.

[0021] That is to say, in the circulating water condenser system of this embodiment, the first condenser 1 serves as the main circulating water condenser to cool the reaction gas. That is, when the first condenser 1 is operating normally and there is no leakage, the high-temperature reaction gas is mainly cooled in the first condenser 1. However, considering that when the circulating water condenser leaks, it will cause low heat exchange efficiency, increased energy consumption, and even a shutdown problem of pipeline leakage, the circulating water condenser system of this embodiment is also designed with a second condenser 2 for immediate switching when the first condenser 1 leaks.

[0022] Referring to Figure 1, the second condenser 2 is connected with a second cold water pipe 21, a second hot water pipe 22, a second intake pipe 3 and a second exhaust pipe 24. Among them, the second cold water pipe 21 is connected with the first cold water pipe 11, and the second hot water pipe 22 is connected with the first hot water pipe 12. And when the first condenser 1 leaks, blocking structures are arranged at the ends of the first cold water pipe 11 and the first hot water pipe 12. Thus, when the first condenser 1 leaks, when the low-temperature circulating water enters the first cold water pipe 11, it will not enter the first condenser 1 because the end of the first cold water pipe 11 is blocked by the blocking structure, but will enter the second condenser 2 through the second cold water pipe 21 connected to the first cold water pipe 11. After the low-temperature circulating water exchanges heat with the reaction gas in the second condenser 2, it is discharged from the second hot water pipe 22 to the first hot water pipe 12 connected thereto and then discharged to the outside. Similarly, when the first condenser 1 leaks, the blocking structure arranged at the end of the first hot water pipe 12 will block the heated circulating water from entering the first condenser 1, and can also block the circulating water mixed with the leaked substance in the first condenser 1 from being discharged to the outside and polluting the quality of the circulating water, thereby maintaining the water quality. On the other hand, the circulating water pipes of the second condenser 2 are designed to be connected with the circulating water pipes of the first condenser 2. During the switching of the circulating water condensers, the original water pipe joints between the circulating water condenser and the outside can still be used, avoiding the shutdown and maintenance during the process of switching the water pipe joints, and providing a basis for switching the circulating water condensers without stopping the vehicle.

[0023] The second intake pipe 23 is designed to be connected with the first exhaust pipe 14. When the first condenser 1 leaks, a blocking structure is arranged at the end of the first exhaust pipe 14 to prevent the reaction gas with insufficient cooling from being discharged to the outside. And under the blocking of the blocking structure, the reaction gas enters the second intake pipe 23 from the first exhaust pipe 14, and then enters the second condenser 2, exchanges heat and cools with the low-temperature circulating water in the second condenser 2, and the cooled reaction gas is discharged to the outside from the second exhaust pipe 24.

[0024] In this embodiment, in order to ensure sufficient cooling of the reaction gas in the initial stage of switching the circulating water condenser, a transition condenser 3 is also designed, and the intake pipeline of the transition condenser 3 is connected with the first exhaust pipe 14 through a first exhaust interface 31, and the intake pipeline of the transition condenser 3 is connected with the second exhaust pipe 24 through a second exhaust interface 32. That is, part of the reaction gas during the switching process directly enters the transition condenser 3 from the first exhaust pipe 14 and the first exhaust interface 31, and part of the reaction gas enters the transition condenser 3 from the second exhaust pipe 24 and the second exhaust interface 32 and is cooled, and then is discharged to the outside through the exhaust pipeline of the transition condenser 3, so as to ensure the cooling effect of the reaction gas in the initial stage of switching, ensure that the reaction gas is cooled to the required temperature, and avoid the problem of shutdown caused by the over-high temperature of the reaction gas compressor outlet due to insufficient cooling and over-high temperature of the reaction gas caused by switching.

[0025] The circulating water pipes of the transition condenser 3, namely the cold water pipe that provides low-temperature circulating water and the hot water pipe that discharges the heated circulating water after heat exchange, can either add separate cold water pipelines and hot water pipelines in the system or design connecting pipelines to connect with the first cold water pipe 11 and the first hot water pipe 12. There is no specific limitation here and it can be adjusted according to different circulating water condenser systems. It should be noted that valves can be designed on the circulating water pipes of the transition condenser 3 to supply circulating water into it by opening the valves when the transition condenser 3 is needed. Also, valves are designed at the first exhaust interface 31 and the second exhaust interface 32 to open the valves when the transition condenser 3 is needed, so that the reaction gas enters the transition condenser 3 for cooling down.

[0026] Specifically, the plugging structure is designed as a blind plate 4, and this blind plate 4 can plug the end outlets of the first cold water pipe 11, the first hot water pipe 12, and the first exhaust pipe 14. By designing the blind plate 4 of this sealing structure, the ends of the first cold water pipe 11, the first hot water pipe 12, and the first exhaust pipe 14 can be physically plugged, realizing the reliable cut-out of the leaking first condenser 1, which is beneficial to the independent maintenance of the first condenser 1 after it is cut out of the system and reduces the impact on the entire system.

[0027] In detail, a connecting flange is provided at the connection between the end of the first cold water pipe 11 and the first condenser 1, and the blind plate 4 is arranged at the connecting flange. Similarly, the blind plate of the first hot water pipe 12 can also be arranged at the connecting flange where it is connected to the first condenser 1, and the blind plate of the first exhaust pipe 14 can also be arranged at the connecting flange where it is connected to external equipment. Using the connecting flange to set the blind plate 4 has a simple structure and reliable plugging.

[0028] Cut-in valves are provided on the second cold water pipe 21 and the second hot water pipe 22, and when the first condenser 1 leaks, these cut-in valves are in the open state. Specifically, within the first preset time after the cut-in valves are opened, the opening degree of the cut-in valve of the second hot water pipe 22 is 50% of the maximum opening degree, so as to avoid insufficient cooling of the reaction gas caused by the short flow time of the circulating water in the second condenser 2 at the initial stage of switching. By slowing down the discharge amount of the circulating water, the cooling effect on the reaction gas is improved.

[0029] A transition exhaust interface 33 is connected to the exhaust pipeline of the transition condenser 3, and this transition exhaust interface 33 is connected to the second exhaust pipe 24. Specifically, an anti-surge valve is provided at the end of the second exhaust pipe 24 to improve the protection of the reaction gas compressor and extend the service life of the reaction gas compressor.

[0030] In the circulating water condenser system of this embodiment, when the first condenser 1 leaks, blind plates 4 are installed at the ends of the first cold water pipe 11, the first hot water pipe 12, and the first exhaust pipe 14, and the cut-in valves of the second cold water pipe 21 and the second hot water pipe 22 of the second condenser 2 are opened to realize the cut-in of the second condenser 2 and the cut-out of the leaking first condenser 1. Specifically, after the reaction gas compressor system is shut down briefly, the first condenser 1 is cut out and replaced. Specifically, blind plates 4 are installed at the connection flanges of the first cold water pipe 11, the first hot water pipe 12 and the first condenser 1 for isolation. The manual valve of the second exhaust pipe 24 of the second condenser 2 is slightly opened for pressurization. After the pressurization is completed, the manual valve of the second exhaust pipe 24 of the second condenser 2 is slowly fully opened, and the cut-in valves of the second cold water pipe 21 and the second hot water pipe 22 of the second condenser 2 are slowly opened to fill the circulating water of the second condenser 2. After the liquid filling is completed, the cut-in valve of the second cold water pipe 21 is fully opened, and the cut-in valve of the second hot water pipe 22 is opened to 50% of the maximum opening. After that, the opening of the cut-in valve of the second hot water pipe 22 can be adjusted according to the process requirements.

[0031] In this embodiment, no shutdown is required during the switching of the circulating water condenser. By cutting out the leaking circulating water condenser, the quality of the circulating water can be maintained. In addition, part of the reaction gas can be introduced into the transition condenser 3 through the first exhaust interface 31 and the second exhaust interface 32 for cooling, avoiding the problem of shutdown caused by insufficient cooling of the reaction gas at the initial stage of switching and too high temperature at the outlet of the reaction gas compressor.

[0032] In the case where the embodiments do not conflict with each other, at least part of the technical solutions in each embodiment can be recombined to form the essential technical solutions of the present invention. Of course, the embodiments can also be cited or included in each other. And it should be noted that the adaptive adjustment and modification made by those skilled in the art when recombining the technical means recorded in each embodiment will also fall within the protection scope of the present invention.

[0033] The technical principle of the present invention has been described above in combination with specific embodiments. However, it should be noted that the above descriptions are only for explaining the principle of the present invention and cannot be construed as a specific limitation on the protection scope of the present invention in any way. Based on this explanation, those skilled in the art can think of other specific embodiments or equivalent replacements of the present invention without creative labor, and all will fall within the protection scope of the present invention.

Claims

1. A circulating water condenser system, characterized in that: include: A first condenser (1), the first condenser (1) being connected to a first cold water pipe (11), a first hot water pipe (12), a first air intake pipe (13) and a first exhaust pipe (14); a second condenser (2), the second condenser (2) being connected to a second cold water pipe (21), a second hot water pipe (22), a second air intake pipe (23) and a second exhaust pipe (24), the second cold water pipe (21) being connected to the first cold water pipe (11), the second hot water pipe (22) being connected to the first hot water pipe (12), and the second air intake pipe (23) being connected to the first exhaust pipe (14); A transition condenser (3), wherein an air intake line of the transition condenser (3) is connected to the first exhaust pipe (14) via a first exhaust interface (31), and an air intake line of the transition condenser (3) is connected to the second exhaust pipe (24) via a second exhaust interface (32); When the first condenser (1) leaks, blocking structures are provided at the ends of the first cold water pipe (11), the first hot water pipe (12) and the first exhaust pipe (14).

2. A circulating water condenser system according to claim 1, characterized in that: The blocking structure is a blind plate (4), and the blind plate (4) blocks the end outlets of the first cold water pipe (11), the first hot water pipe (12) and the first exhaust pipe (14).

3. A circulating water condenser system according to claim 2, characterized in that: A connecting flange is provided at the connection between the end of the first cold water pipe (11) and the first condenser (1), and the blind plate (4) is provided at the connecting flange.

4. A circulating water condenser system according to claim 1, characterized in that: The second cold water pipe (21) and the second hot water pipe (22) are provided with cut-in valves, and when leakage occurs in the first condenser, the cut-in valves are in an open state.

5. A circulating water condenser system according to claim 4, characterized in that: During the first preset time after the cut-in valve is opened, the opening degree of the cut-in valve of the second hot water pipe (22) is 50% of the maximum opening degree.

6. A circulating water condenser system according to claim 1, characterized in that: The exhaust pipeline of the transition condenser (3) is connected to a transition exhaust interface (33), and the transition exhaust interface (33) is connected to the second exhaust pipe (24).

7. A circulating water condenser system according to claim 1 or 6, characterized in that: An anti-surge valve is provided at the end of the second exhaust pipe (24).

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