Flash evaporation device and synthetic ammonia production system

Abstract

The utility model discloses a flash evaporation device and a synthetic ammonia production system, the flash evaporation device is applied to flash evaporation of condensate liquid filtered by a natural gas condensate liquid separator, the flash evaporation device comprises a containing part, a liquid inlet, a liquid outlet and an exhaust port, the liquid inlet, the liquid outlet and the exhaust port are all communicated with the containing part, and the liquid inlet is formed between the liquid outlet and the exhaust port; the first end of the liquid inlet pipe assembly communicates with the containing space through the liquid inlet, the second end is used for communicating with a liquid outlet of the natural gas condensate liquid separator, and the middle of the liquid inlet pipe assembly is provided with a transparent area. The stop valve is arranged on the liquid inlet pipe assembly; the switch valve is arranged at the liquid outlet and is hermetically connected with the accommodating part; the liquid level sensor is connected with the accommodating part; the filter plate assembly is located between the first end of the liquid inlet pipe assembly and the exhaust port, and the peripheral side of the filter plate assembly is in sealed connection with the inner wall of the containing part. According to the flash evaporation device, condensate liquid is prevented from being emptied by arranging the liquid level sensor and the switch valve; and by arranging the containing part and the filter plate assembly, it is ensured that the flash evaporation phenomenon occurs in the containing space, and the personal safety of operators is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gas-liquid separation, and in particular to a flash evaporation device and a synthetic ammonia production system. Background Art

[0002] In the production process of synthetic ammonia using natural gas as raw material, in order to ensure the cleanliness of natural gas, it is necessary to first use a natural gas condensate separator to filter the condensate in the natural gas, and then pass the filtered natural gas into the decarbonization system in the synthetic ammonia production system for decarbonization treatment before subsequent production; the condensate produced after filtration will be discharged through the discharge port.

[0003] The existing natural gas condensate separator is placed on a support surface, and the discharge port of the natural gas condensate separator is set on a side close to the support surface. During the condensate discharge process, the staff places an open container on the support surface so that the condensate discharged from the discharge port can enter the container for subsequent treatment.

[0004] However, when implementing the present invention, the inventors discovered that since a relatively high working pressure is maintained inside the natural condensate separator, during the discharge of the condensate into the container, a vacuum flash phenomenon may occur due to a sudden drop in pressure, or natural gas may be discharged from the discharge port due to the condensate being emptied, causing the natural gas to accumulate in the discharge area and cause combustion and explosion, thus affecting the personal safety of the workers. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a flash device and a synthetic ammonia production system to solve the technical problem in the prior art that, during the discharge of condensate, the accumulation of natural gas in the discharge area affects the personal safety of workers.

[0006] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0007] The first aspect of the present application provides a flash evaporation device, which is used for flash evaporation of condensate filtered by a natural gas condensate separator, comprising:

[0008] The accommodating portion comprises an accommodating space, a liquid inlet, a liquid discharge port and an exhaust port, wherein the liquid inlet, the liquid discharge port and the exhaust port are all connected to the accommodating space, and the liquid inlet is arranged between the liquid discharge port and the exhaust port;

[0009] A liquid inlet pipe assembly, wherein the first end of the liquid inlet pipe assembly is connected to the accommodating space through the liquid inlet; the second end of the liquid inlet pipe assembly is used to communicate with the liquid outlet of the natural gas condensate separator, and the middle part of the liquid inlet pipe assembly has a transparent area;

[0010] A stop valve, arranged on the liquid inlet pipe assembly;

[0011] A switch valve, disposed at the liquid discharge port and sealedly connected to the accommodating portion;

[0012] A liquid level sensor is disposed in the accommodating space and connected to the accommodating portion, and the liquid level sensor is used to measure the liquid level height of the condensate in the accommodating space;

[0013] A filter plate assembly is disposed in the accommodating space, the filter plate assembly is located between the first end of the liquid inlet pipe assembly and the exhaust port, and the peripheral side of the filter plate assembly is sealed and connected to the inner wall of the accommodating portion.

[0014] In some modified implementations of the first aspect of the present application, the liquid inlet pipe assembly includes:

[0015] a liquid inlet pipeline, wherein a first end of the liquid inlet pipeline is connected to the accommodating space through the liquid inlet port, a second end of the liquid inlet pipeline is used to be connected to the liquid outlet of the natural gas condensate separator, and a mounting hole is provided in the middle of the liquid inlet pipeline;

[0016] An observation window forms the transparent area, and the observation window is sealed and connected to the liquid inlet pipeline through the mounting hole.

[0017] In some embodiments, the liquid inlet pipe assembly further includes:

[0018] A cover plate is arranged at the mounting hole and is movably connected to the liquid inlet pipeline. The cover plate can be movably formed to cover or reveal the observation window.

[0019] In some embodiments, the transparent area is disposed between the stop valve and the first end of the liquid inlet pipe assembly; and / or, there are at least two stop valves.

[0020] In some embodiments, the filter panel assembly comprises:

[0021] An annular mounting seat, the outer wall of which is sealingly connected to the inner wall of the accommodating portion;

[0022] A plurality of filter plates are arranged in parallel and at intervals, and the peripheral sides of the plurality of filter plates are sealed and connected to the inner wall of the mounting seat.

[0023] In some embodiments, the filter holes on the filter plates gradually decrease in diameter from the liquid inlet to the exhaust port.

[0024] In some embodiments, it also includes:

[0025] A muffler, disposed at the exhaust port and sealedly connected to the accommodating portion;

[0026] an exhaust pipeline, a first end of the exhaust pipeline being in communication with the muffler;

[0027] an air storage device, connected to the second end of the exhaust pipeline;

[0028] A one-way valve is arranged in the exhaust pipeline.

[0029] In some embodiments, it also includes:

[0030] At least three support rods are arranged at equal intervals along a circular trajectory, the first end of each support rod is connected to the outer wall of the accommodating portion, and the drainage port is arranged inside the interval surrounded by at least three support rods.

[0031] The second aspect of the present application provides a synthetic ammonia production system, comprising:

[0032] Natural gas liquids separator;

[0033] A decarbonization system, wherein the air inlet of the decarbonization system is connected to the air outlet of the natural gas condensate separator;

[0034] In the flash device described in the first aspect, the second end of the liquid inlet pipe assembly of the flash device is connected to the liquid outlet of the natural gas condensate separator.

[0035] In some modified implementations of the second aspect of the present application,

[0036] There are multiple liquid outlets, the number of the liquid inlet pipe assemblies is equal to the number of the liquid outlets, and the first end of each of the liquid inlet pipe assemblies is connected to one of the liquid outlets.

[0037] Compared with the prior art, the flash device provided by the present application uses a liquid inlet pipe assembly to introduce the condensate generated by the natural gas condensate separator into the accommodating space, and the condensate flashes in the accommodating space. The gas generated after flashing is filtered by the filter plate assembly and then discharged from the exhaust port. The filter plate assembly can effectively intercept the condensate that is not completely vaporized during the flashing process to prevent it from being discharged with the gas, thereby avoiding clogging the exhaust port and flashing at the exhaust port. The flashed condensate is discharged through the drain port. Since the condensate has been flashed in the accommodating space, the flashing phenomenon is avoided when the staff receives the condensate, thereby improving the safety of the operation. At the same time, since the exhaust port and the drain port are arranged at intervals, the gas discharged from the exhaust port is at a distance from the staff located at the drain port, thereby avoiding the danger of direct exposure of the gas to the vicinity of the staff, thereby strengthening the protection of the staff.

[0038] By providing a transparent area in the middle of the liquid inlet pipe assembly, the staff can directly observe whether there is condensate flowing in the liquid inlet pipe assembly through the transparent area. When there is no condensate flowing, the stop valve can be closed in time to prevent the natural gas in the natural gas condensate separator from entering the accommodating space, thereby ensuring the volume of natural gas filtered by the natural gas condensate separator; the liquid level sensor is used to measure the liquid level of the condensate in the accommodating space. Through the measurement of the liquid level sensor, when the liquid level is high, the switch valve can be opened in time to discharge the condensate, thereby preventing the condensate from flowing back to the liquid inlet pipe assembly or even entering the exhaust port; when the liquid level is low or there is no liquid level, the switch valve can be closed to prevent the natural gas from being discharged from the discharge port, thereby ensuring the personal safety of the staff.

[0039] The flash evaporation device of the present application effectively avoids the condensate from being emptied by providing a liquid level sensor and a switch valve; and ensures that the flash evaporation phenomenon occurs within the accommodating space of the accommodating portion by providing a accommodating portion and a filter plate assembly, thereby greatly improving the personal safety of the operating personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0041] Figure 1 The schematic diagram of the structure of the flash evaporation device of Example 1 of the present application is schematically shown;

[0042] Explanation of the accompanying drawings: 1. accommodating part; 2. liquid inlet pipe assembly; 21. liquid inlet pipeline; 22. observation window; 3. stop valve; 4. switch valve; 5. liquid level sensor; 6. filter plate assembly; 7. exhaust pipeline; 8. support rod; 9. discharge pipeline. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0045] When natural gas is transported from the formation to the ground, some condensate will be dissolved. In the production process of synthetic ammonia using natural gas as raw material, the cleanliness of natural gas needs to be ensured, so it is necessary to use a natural gas condensate separator to filter the condensate in natural gas. In order to ensure the normal operation of the decarbonization system and the natural gas condensate separator, the natural gas filtered by the natural gas condensate separator must ensure a pressure of 2.60Mpa and a temperature of 20℃.

[0046] After in-depth research, the inventors found that, for the condensate produced by the natural gas condensate separator, an open container is currently placed at the discharge port of the natural gas condensate separator by manual operation to discharge the condensate into the container, that is, the condensate is discharged from the natural gas condensate separator with a higher pressure into the container with a normal pressure, and the pressure drops suddenly and flashing occurs; and since the liquid level inside the natural gas condensate separator cannot be observed during the discharge process, the condensate is easily emptied, causing the natural gas in the natural gas condensate separator to be discharged from the condensate discharge port. These two situations lead to the accumulation of natural gas in the discharge area, which is likely to cause combustion and explosion, affecting the personal safety of the staff working in the discharge area.

[0047] The flash evaporation device of the present application effectively avoids the condensate from being emptied by providing a liquid level sensor 5 and a switch valve 4; and ensures that the flash evaporation phenomenon occurs within the accommodating space of the accommodating portion 1 by providing a accommodating portion 1 and a filter plate assembly 6, thereby greatly improving the personal safety of the operating personnel.

[0048] Example 1

[0049] like Figure 1 As shown, Example 1 of the present application provides a flash evaporation device, which is applied to the flash evaporation of condensate filtered by a natural gas condensate separator, and includes: a receiving portion 1, a liquid inlet pipe assembly 2, a stop valve 3, a switch valve 4, a liquid level sensor 5 and a filter plate assembly 6;

[0050] The accommodating portion 1 has an accommodating space, a liquid inlet, a liquid discharge port and an exhaust port, all of which are connected to the accommodating space, and the liquid inlet is arranged between the liquid discharge port and the exhaust port; the first end of the liquid inlet pipe assembly 2 is connected to the accommodating space through the liquid inlet; the second end of the liquid inlet pipe assembly 2 is used to be connected to the liquid outlet of the natural gas condensate separator, and the middle part of the liquid inlet pipe assembly 2 has a transparent area; the stop valve 3 is arranged on the liquid inlet pipe assembly 2; the switch valve 4 is arranged at the liquid discharge port and is sealed and connected to the accommodating portion 1; the liquid level sensor 5 is arranged in the accommodating space and connected to the accommodating portion 1, and the liquid level sensor 5 is used to measure the liquid level height of the condensate in the accommodating space; the filter plate assembly 6 is arranged in the accommodating space, the filter plate assembly 6 is located between the first end of the liquid inlet pipe assembly 2 and the exhaust port, and the peripheral side of the filter plate assembly 6 is sealed and connected to the inner wall of the accommodating portion 1.

[0051] Specifically, the accommodation space of the accommodation part 1 provides a space for flash evaporation of the condensate. The accommodation part 1 can be a cylindrical tank; or, the accommodation part 1 can include a cylinder with openings at both ends, and two connecting parts with hemispherical inner and outer walls, each of which is sealed and connected to one end of the cylinder; the exhaust port and the liquid discharge port are each arranged on a connecting part, and the liquid discharge port is close to the supporting surface of the accommodation part 1 relative to the exhaust port, so that the gas discharged from the exhaust port is at a distance from the staff located at the liquid discharge port, avoiding the danger of direct exposure of the gas near the staff, and at the same time facilitating the operation of the staff; the liquid inlet can be arranged at the first end of the cylinder, and the first end of the cylinder is close to the exhaust port relative to the second end, so that the accommodation part 1 can accommodate a certain amount of condensate.

[0052] The liquid inlet pipe assembly 2 is used to connect the natural gas condensate separator and the accommodating space. The first end of the liquid inlet pipe assembly 2 is arranged at the liquid inlet and sealedly connected with the accommodating part 1, and the second end of the liquid inlet pipe assembly 2 is used to be arranged at the liquid outlet and sealedly connected with the natural gas condensate separator. The two end connections of the liquid inlet pipe assembly 2 can be provided with sealing elements such as sealing rings and gaskets to achieve sealing. The liquid inlet pipe assembly 2 can be made of a transparent material that is pressure-resistant and corrosion-resistant as a whole, such as high-strength glass or transparent plastic, so that the liquid inlet pipe assembly 2 forms a transparent area as a whole. By setting the transparent area, the staff can more intuitively observe the flow state of the condensate in the liquid inlet pipe assembly 2, and can quickly determine whether the fluid exists without additional instruments.

[0053] The stop valve 3 can disconnect the connection between the accommodating space and the natural gas condensate separator when there is no condensate flowing in the inlet pipe assembly 2, thereby preventing the natural gas in the natural gas condensate separator from entering the accommodating space, ensuring the volume of the natural gas separated by the natural gas condensate separator, and ensuring the working efficiency of the decarbonization system connected to the natural gas condensate separator. In addition, during use, the condensate inlet speed can be adjusted through the stop valve 3 according to the observed flow state of the condensate to optimize the flash evaporation efficiency. For example, when the liquid level of the liquid level sensor 5 rises faster, it indicates that the flash evaporation speed may be slower (because the liquid accumulation is faster than the gasification speed). At this time, the condensate inlet speed should be slowed down to avoid the accommodating space from being filled too early and to give more time to complete the flash evaporation. On the contrary, if the liquid level rises slowly, it indicates that the flash evaporation process is more efficient or the inlet speed may be too slow. At this time, the inlet speed can be increased to make full use of the flash evaporation capacity and improve the processing efficiency.

[0054] The switch valve 4 is used to control the discharge of the condensate after flashing in the accommodating space. By opening or closing the switch valve 4, the staff can decide when to discharge the flashed condensate from the accommodating part 1 and control the speed of the condensate discharge.

[0055] The liquid level sensor 5 can measure the liquid level of the condensate in the accommodation space, and the staff can discharge the condensate according to the liquid level to prevent the condensate from flowing back to the liquid inlet pipe assembly 2 or even entering the exhaust port when the liquid level is high, and to prevent the natural gas from being discharged from the liquid outlet when there is no liquid level, thereby ensuring the personal safety of the staff. The liquid level sensor 5 can be a magnetic flap liquid level gauge or an ultrasonic liquid level sensor 5, etc.

[0056] The filter plate assembly 6 can effectively intercept the condensate that is not completely vaporized during the flash evaporation process, prevent it from being discharged with the gas, avoid clogging the exhaust port and flashing at the exhaust port, and ensure that the condensate flashes in the accommodating space. The shape of the filter plate assembly 6 can be designed according to the shape of the inner wall of the accommodating portion 1, and the filter plate assembly 6 can be sealed and connected to the inner wall of the accommodating portion 1 by snapping, or, when the accommodating portion 1 and the filter plate assembly 6 are both made of metal, the two can be connected by welding.

[0057] The flash device provided in Example 1 of the present application uses a liquid inlet pipe assembly 2 to introduce the condensate generated by the natural gas condensate separator into the accommodating space, and the condensate flashes in the accommodating space. The gas generated after flashing is filtered by the filter plate assembly 6 and then discharged from the exhaust port. The filter plate assembly 6 can effectively intercept the condensate that is not completely vaporized during the flashing process to prevent it from being discharged with the gas, thereby avoiding clogging the exhaust port and flashing at the exhaust port. The flashed condensate is discharged through the drain port. Since the condensate has been flashed in the accommodating space, flashing is avoided when the staff receives the condensate, thereby improving the safety of the operation. At the same time, since the exhaust port and the drain port are arranged at intervals, the gas discharged from the exhaust port is at a distance from the staff located at the drain port, thereby avoiding the danger of direct exposure of the gas to the vicinity of the staff, thereby strengthening the protection of the staff.

[0058] By providing a transparent area in the middle of the liquid inlet pipe assembly 2, the staff can directly observe whether there is condensate flowing in the liquid inlet pipe assembly 2 through the transparent area. When there is no condensate flowing, the stop valve 3 can be closed in time to prevent the natural gas in the natural gas condensate separator from entering the accommodating space, thereby ensuring the volume of natural gas filtered by the natural gas condensate separator; the liquid level sensor 5 is used to measure the liquid level of the condensate in the accommodating space. Through the measurement of the liquid level sensor 5, when the liquid level is high, the switch valve 4 can be opened in time to discharge the condensate, thereby preventing the condensate from flowing back to the liquid inlet pipe assembly 2 or even entering the exhaust port; when the liquid level is low or there is no liquid level, the switch valve 4 can be closed to prevent the natural gas from being discharged from the discharge port, thereby ensuring the personal safety of the staff.

[0059] The flash evaporation device of the present application effectively avoids the condensate from being emptied by providing a liquid level sensor 5 and a switch valve 4; and ensures that the flash evaporation phenomenon occurs within the accommodating space of the accommodating portion 1 by providing a accommodating portion 1 and a filter plate assembly 6, thereby greatly improving the personal safety of the operating personnel.

[0060] In order to reduce production costs, such as Figure 1 As shown, in some embodiments, the liquid inlet pipe assembly 2 includes:

[0061] A liquid inlet pipeline 21, wherein a first end of the liquid inlet pipeline 21 is connected to the accommodating space through a liquid inlet, a second end of the liquid inlet pipeline 21 is used to be connected to a liquid outlet of a natural gas condensate separator, and a mounting hole is provided in the middle of the liquid inlet pipeline 21;

[0062] The observation window 22 forms a transparent area, and the observation window 22 is sealed and connected to the liquid inlet pipeline 21 through the mounting hole.

[0063] Specifically, the observation window 22 can be sealed and connected to the liquid inlet pipeline 21 through a flange or a clamp; alternatively, a groove can be preset on the edge of the mounting hole of the liquid inlet pipeline 21, the observation window 22 can be embedded therein, and a sealing ring can be provided between the two to ensure the sealing effect.

[0064] like Figure 1 As shown, in some embodiments, the liquid inlet pipe assembly 2 further includes:

[0065] A cover plate (not shown in the figure) is arranged at the mounting hole and is movably connected to the liquid inlet pipeline 21 . The cover plate can be movably formed to cover or reveal the observation window 22 .

[0066] Specifically, the cover plate can be hinged or slidably connected to the liquid inlet pipeline 21. The cover plate is used to protect the observation window 22, extend the service life of the observation window 22, and reduce the maintenance and replacement costs caused by accidental damage. In order to ensure that the cover plate can maintain this state in the shielding state and enhance its protection performance, the liquid inlet pipe assembly 2 also includes: a locking assembly, which can be connected to the liquid inlet pipeline 21 and the cover plate to limit the movement of the cover plate. For example, the locking assembly includes a socket and a hook, the socket is arranged on the liquid inlet pipeline 21, and the hook matching the socket is arranged on the cover plate, and the socket is engaged with the hook in the shielding state; or, the locking assembly includes a screw and two fixing seats; the two fixing seats are respectively arranged on the cover plate and the liquid inlet pipeline 21, and each fixing seat is provided with a through screw hole. In the shielding state, the screw holes on the two fixing seats coincide, and the cover plate is fixed by tightening the screws to achieve the purpose of locking.

[0067] like Figure 1As shown, in some embodiments, a transparent area is provided between the stop valve 3 and the first end of the liquid inlet pipe assembly 2, so that the staff can directly observe the immediate flow state of the fluid after the stop valve 3 is operated, which is conducive to the staff to quickly make adjustments according to the actual flow state of the fluid to ensure the efficiency and stability of the system operation. And / or, there are at least two stop valves 3 to achieve segmented control of the fluid flow, and multiple stop valves 3 can be used as a safety redundancy measure to ensure the safety of the entire device. The stop valves 3 can be selected as two, three, four, five or even more, among which two are preferred.

[0068] In some embodiments, the filter panel assembly 6 comprises:

[0069] An annular mounting seat (not shown in the figure), the outer wall of which is sealedly connected to the inner wall of the accommodating portion 1;

[0070] A plurality of filter plates (not shown in the figure) are arranged in parallel and at intervals, and the peripheral sides of the plurality of filter plates are sealedly connected to the inner wall of the mounting seat.

[0071] Specifically, the peripheral side of each filter plate can be sealed and connected to the inner wall of the mounting seat by means of a snap connection, or, when the filter plate and the mounting seat are both made of metal, multiple filter plates can be connected to the mounting seat by means of welding. Multiple filter plates further prevent incompletely vaporized condensate from being discharged from the exhaust port, ensuring that the condensate flashes in the accommodating space, and the provision of the annular mounting seat makes the installation of multiple filter plates simpler and more convenient.

[0072] In some embodiments, the filter holes on the plurality of filter plates have apertures that gradually decrease from the liquid inlet to the exhaust port.

[0073] Specifically, each filter plate has a plurality of filter holes. For the convenience of processing, the aperture size and shape of the plurality of filter holes on each filter plate can be the same. The fluid first passes through the filter plate with a larger aperture, which can remove larger particles or impurities. As the fluid moves toward the exhaust port, it passes through the filter plate with a gradually decreasing aperture, and smaller particles and impurities are intercepted step by step, thereby achieving a finer filtering effect.

[0074] In some embodiments, it also includes:

[0075] A muffler (not shown in the figure) is arranged at the exhaust port and is sealed and connected to the accommodating portion 1;

[0076] An exhaust pipe 7, a first end of the exhaust pipe 7 is connected to the muffler;

[0077] An air storage device (not shown in the figure) is connected to the second end of the exhaust pipe 7;

[0078] A one-way valve (not shown) is provided in the exhaust pipe 7 .

[0079] Specifically, the muffler can be connected to the accommodating portion 1 by a flange seal or a thread seal. The muffler can reduce the noise generated during the exhaust process and protect the hearing of the staff. The muffler can be purchased on the market.

[0080] The exhaust pipe 7 is used to connect the silencer and the gas storage device, so that the natural gas discharged after flash evaporation in the accommodating space enters the gas storage device for storage after being silenced by the silencer, so as to facilitate the subsequent treatment and use of the natural gas discharged after flash evaporation.

[0081] The one-way valve ensures that the gas can only flow in one direction, preventing the gas from flowing back from the gas storage device to the flash device.

[0082] like Figure 1 As shown, in some embodiments, it also includes:

[0083] At least three support rods 8 are arranged at equal intervals along a circular trajectory, a first end of each support rod 8 is connected to the outer wall of the accommodating portion 1 , and a drain port is disposed inside a region surrounded by at least three support rods 8 .

[0084] Specifically, by arranging at least three support rods 8 at equal intervals on the outer wall of the accommodating portion 1, the stability of the entire flash evaporation device can be effectively enhanced. The drain port is arranged inside the interval surrounded by the support rods 8, which makes more effective use of the space and avoids unintentional touching of the switch valve 4 by unrelated personnel, further ensuring the safety of the overall device. The device of the present application may also include a drain line 9, the first end of the drain line 9 is connected to the accommodating space through the drain port, the switch valve 4 is arranged on the drain line 9, and the second end of the drain line 9 is used to discharge the condensate, which is more conducive to the operation of the staff. The number of support rods 8 can be three, four, five or even more, etc.

[0085] Example 2

[0086] Embodiment 2 of the present application provides a synthetic ammonia production system, comprising:

[0087] Natural gas liquids separator;

[0088] A decarbonization system, wherein an air inlet of the decarbonization system is connected to an air outlet of the natural gas condensate separator;

[0089] like Figure 1 As shown, in the flash device of Example 1, the second end of the liquid inlet pipe assembly 2 of the flash device is connected to the liquid outlet of the natural gas condensate separator.

[0090] Specifically, the natural gas condensate separator is used to separate condensate from natural gas, and the separated natural gas is discharged from the gas outlet of the natural gas condensate separator and enters the inlet of the decarbonization system; the separated condensate is discharged from the liquid outlet of the natural gas condensate separator and enters the second end of the liquid inlet component of the flash device. The natural gas condensate separator can be obtained by purchasing on the market.

[0091] The decarbonization system is used to remove carbon dioxide from natural gas. The decarbonization system is well known to metal workers in this field and will not be described in detail here.

[0092] The synthetic ammonia production system of Example 2 of the present application includes the flash evaporation device of Example 1. The flash evaporation device effectively avoids the condensate from being emptied by providing a liquid level sensor 5 and a switch valve 4. The flash evaporation device ensures that the flash evaporation occurs within the accommodating space of the accommodating portion 1 by providing a accommodating portion 1 and a filter plate assembly 6, thereby greatly improving the personal safety of the operators. The synthetic ammonia production system of Example 2 of the present application optimizes the production process of synthetic ammonia by integrating a flash evaporation device and a decarbonization system, thereby ensuring the safety of the production process.

[0093] like Figure 1 As shown, in some embodiments, there are multiple liquid outlets, the number of the liquid inlet pipe assemblies 2 is equal to the number of the liquid outlets, and the first end of each liquid inlet pipe assembly 2 is connected to one liquid outlet.

[0094] Specifically, the number of liquid outlets of the natural gas condensate separator can be selected according to actual needs, for example, it can be two, three or even more, so as to improve the processing efficiency of the natural gas condensate separator. By configuring a liquid inlet pipe assembly 2 for each liquid outlet on the natural gas condensate separator, the safety of each liquid outlet of the natural gas condensate separator can be effectively guaranteed. During the liquid inlet process, the connectivity of each liquid inlet pipe assembly 2 can be individually controlled according to the liquid state observed in the transparent area on each liquid inlet pipe assembly 2.

[0095] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A flash evaporation device, used for flash evaporation of condensate filtered by a natural gas condensate separator, characterized in that: include: The accommodating portion comprises an accommodating space, a liquid inlet, a liquid discharge port and an exhaust port, wherein the liquid inlet, the liquid discharge port and the exhaust port are all connected to the accommodating space, and the liquid inlet is arranged between the liquid discharge port and the exhaust port; A liquid inlet pipe assembly, wherein the first end of the liquid inlet pipe assembly is connected to the accommodating space through the liquid inlet; the second end of the liquid inlet pipe assembly is used to communicate with the liquid outlet of the natural gas condensate separator, and the middle part of the liquid inlet pipe assembly has a transparent area; A stop valve, arranged on the liquid inlet pipe assembly; A switch valve, disposed at the liquid discharge port and sealedly connected to the accommodating portion; A liquid level sensor is disposed in the accommodating space and connected to the accommodating portion, and the liquid level sensor is used to measure the liquid level height of the condensate in the accommodating space; A filter plate assembly is disposed in the accommodating space, the filter plate assembly is located between the first end of the liquid inlet pipe assembly and the exhaust port, and the peripheral side of the filter plate assembly is sealed and connected to the inner wall of the accommodating portion.

2. The flash evaporation device according to claim 1, characterized in that: The liquid inlet pipe assembly comprises: a liquid inlet pipeline, wherein a first end of the liquid inlet pipeline is connected to the accommodating space through the liquid inlet port, a second end of the liquid inlet pipeline is used to be connected to the liquid outlet of the natural gas condensate separator, and a mounting hole is provided in the middle of the liquid inlet pipeline; An observation window forms the transparent area, and the observation window is sealed and connected to the liquid inlet pipeline through the mounting hole.

3. The flash evaporation device according to claim 2, characterized in that: The liquid inlet pipe assembly also includes: A cover plate is arranged at the mounting hole and is movably connected to the liquid inlet pipeline. The cover plate can be movably formed to cover or reveal the observation window.

4. The flash evaporation device according to claim 1, characterized in that: The transparent area is arranged between the stop valve and the first end of the liquid inlet pipe assembly; and / or, there are at least two stop valves.

5. The flash evaporation device according to claim 1, characterized in that: The filter plate assembly comprises: An annular mounting seat, the outer wall of which is sealingly connected to the inner wall of the accommodating portion; A plurality of filter plates are arranged in parallel and at intervals, and the peripheral sides of the plurality of filter plates are sealed and connected to the inner wall of the mounting seat.

6. The flash evaporation device according to claim 5, characterized in that: The filter holes on the filter plates gradually decrease in diameter from the liquid inlet to the exhaust port.

7. The flash evaporation device according to claim 1, characterized in that: Also includes: A muffler, disposed at the exhaust port and sealedly connected to the accommodating portion; an exhaust pipeline, a first end of the exhaust pipeline being in communication with the muffler; an air storage device, connected to the second end of the exhaust pipeline; A one-way valve is arranged in the exhaust pipeline.

8. The flash evaporation device according to claim 1, characterized in that: Also includes: At least three support rods are arranged at equal intervals along a circular trajectory, the first end of each support rod is connected to the outer wall of the accommodating portion, and the drainage port is arranged inside the interval surrounded by at least three support rods.

9. A synthetic ammonia production system, characterized in that: include: Natural gas liquids separator; A decarbonization system, wherein the air inlet of the decarbonization system is connected to the air outlet of the natural gas condensate separator; The flash device according to any one of claims 1 to 8, wherein the second end of the liquid inlet pipe assembly of the flash device is connected to the liquid outlet of the natural gas condensate separator.

10. The synthetic ammonia production system according to claim 9, characterized in that: There are multiple liquid outlets, the number of the liquid inlet pipe assemblies is equal to the number of the liquid outlets, and the first end of each of the liquid inlet pipe assemblies is connected to one of the liquid outlets.

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