Steam-liquid separation device with noise reduction function under negative pressure condition

Abstract

The utility model relates to the technical field of steam vapor-liquid separation devices, and provides a steam vapor-liquid separation device with a silencing function under a negative pressure condition, which comprises a tank body device, a silencing device, a spraying device, a negative pressure device and a drainage device, the silencing device is arranged on the tank body device, one part of the silencing device is located in the tank body device, the spraying device is arranged on the negative pressure device, one part of the spraying device is located in the negative pressure device, and the drainage device is located outside the tank body device and communicated with the tank body device. According to the steam-liquid separation device with the noise reduction function under the negative pressure condition, steam is conveyed into the tank body device through the noise reduction device, the steam in the tank body device is cooled through the spraying device, the steam in the tank body device is rapidly discharged through the negative pressure device, the steam in the tank body device is sealed through the water drainage device, and the steam in the tank body device is discharged through the water drainage device. Therefore, noise is reduced, and steam leakage is isolated.

Description

Technical Field

[0001] This utility model relates to the technical field of steam vapor-liquid separation devices, and more specifically to a steam vapor-liquid separation device with a noise reduction function under negative pressure conditions. Background Technology

[0002] Currently, the treatment of waste acid from the sulfuric acid process for titanium dioxide mainly involves concentration and recovery through primary and secondary heaters, using steam as the heat source. The condensate is discharged directly into an underground water tank via condensate pipes. Due to the high-pressure steam impact, significant noise and mist are generated on-site, resulting in low visibility. Waste acid concentration is a core environmental protection process in the sulfuric acid process for titanium dioxide production. The entire process includes a preheater system, a primary heater system, and a secondary heater system. The heat exchange medium for the entire system is steam, particularly in the primary heater system where the steam pressure is 0.5 MPa. Previously, condensate was directly discharged into the underground water tank, causing significant noise and mist. To effectively reduce noise and improve the operating environment, a vapor-liquid separation device capable of reducing noise and mist is needed.

[0003] CN 202909554 U discloses a horizontal steam-liquid separator, including a separator body arranged horizontally. The bottom of the separator body has a mixed steam inlet and a liquid outlet. A connecting pipe installed on the mixed steam inlet extends into the separator body to 3 / 4 of its height. A steam outlet is located at the top of the separator, and a steam-liquid separation device is located below the steam outlet. This prior art, by extending the mixed steam inlet into the separator body and close to the plate-type steam-liquid separator through a connecting pipe, ensures sufficient contact between the mixed steam and the plate-type steam-liquid separator for steam-liquid separation, allowing for continuous and efficient steam discharge without consuming external mechanical power. However, while this prior art achieves steam-liquid separation of the mixed steam, it does not achieve sufficient steam recovery.

[0004] CN 211864490 U discloses a steam vapor-liquid separator, including a separation chamber. An inlet steam pipe and an outlet steam pipe are fixedly connected to the outer wall of the separation chamber. A condenser tube is movably connected to the bottom of a connecting block. The outer wall of the outlet steam pipe penetrates the outer wall of the separation chamber and extends into the interior of the separation chamber, and the outer wall of the outlet steam pipe also penetrates the outer wall of the condenser tube and extends into the interior of the condenser tube. A limit block is fixedly connected inside the condenser tube, and a wire mesh layer is movably connected to the top of the limit block. A purification layer is movably connected to the inner wall of the separation chamber, and a water outlet pipe is fixedly connected to the bottom of the separation chamber. This prior art achieves high working efficiency for the steam vapor-liquid separator. However, this prior art does not achieve sufficient steam recovery.

[0005] Therefore, there is room for improvement in reducing noise during steam-liquid separation. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a steam vapor-liquid separation device with a noise reduction function under negative pressure conditions, so as to solve the technical problems of high noise and large amount of mist in high-pressure steam.

[0007] To solve the above-mentioned technical problems, this utility model provides a steam vapor-liquid separation device with silencing function under negative pressure conditions, including a tank device, a silencing device, a spraying device, a negative pressure device, and a drainage device. The negative pressure device is located above the tank device and is connected to the tank device. The silencing device is installed on the tank device and a part of the silencing device is located inside the tank device. The spraying device is installed on the negative pressure device and a part of the spraying device is located inside the negative pressure device. The drainage device is located outside the tank device and is connected to the tank device.

[0008] In some embodiments, the tank assembly includes a first tank and a second tank, the second tank being located above and in communication with the first tank, and a silencing device being disposed on the first tank, with a portion of the silencing device located inside the first tank.

[0009] In some embodiments, both the first tank and the second tank are made of duplex stainless steel.

[0010] In some embodiments, the silencing device includes a silencing pipe, one end of which is provided with a plurality of holes and the perforated end of the silencing pipe is located inside the tank device, while the other end of the silencing pipe is located outside the tank device and connected to a steam pipe.

[0011] In some embodiments, the diameter of the hole at one end of the silencing pipe located inside the tank device is 9 mm to 11 mm; the length of the silencing pipe at one end located inside the tank device is 1400 mm to 1600 mm.

[0012] In some embodiments, the silencing duct is made of ultra-low carbon austenitic stainless steel 316L.

[0013] In some embodiments, the negative pressure device includes a negative pressure pipe, an outlet pipe, and a negative pressure fan. The outlet pipe is located above the negative pressure pipe and communicates with the negative pressure pipe. The negative pressure fan is disposed inside the outlet pipe and faces the negative pressure pipe.

[0014] In some embodiments, the spraying device includes a spray pipe disposed on a negative pressure device, one end of the spray pipe being located inside the negative pressure device and having a plurality of spray holes at the end of the spray pipe located inside the negative pressure device.

[0015] In some embodiments, the drainage device includes a first drain pipe, a second drain pipe, a third drain pipe and a fourth drain pipe connected in sequence, wherein the first drain pipe is connected to and communicates with the side of the tank device, the third drain pipe is flush with the first drain pipe, and the second drain pipe is connected between the first drain pipe and the third drain pipe and the bottom of the second drain pipe is lower than the first drain pipe and the third drain pipe.

[0016] In some embodiments, the second drain pipe is a U-shaped pipe.

[0017] Through the above technical solution, the steam vapor-liquid separation device with silencing function under negative pressure provided by this utility model delivers steam to the inside of the tank device through the silencing device, cools the steam in the tank device through the spray device, allows the steam in the tank device to be discharged quickly through the negative pressure device, and seals the steam in the tank device through the drainage device, thereby reducing noise and isolating steam leakage, solving the technical problems of high noise and large amount of mist in the prior art of high pressure steam. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. In addition, the drawings are not drawn to scale, but are used to illustrate the relative positional relationships between the components.

[0019] Figure 1 This is a schematic diagram of a steam vapor-liquid separation device with a noise reduction function under negative pressure, provided as an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. First tank; 2. Second tank; 3. Silencing pipe; 4. Negative pressure pipe; 5. Outlet pipe; 6. Negative pressure fan; 7. Spray pipe; 8. First drain pipe; 9. Second drain pipe; 10. Third drain pipe; 11. Fourth drain pipe; 12. Underground water tank. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0023] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0024] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0026] Reference Figure 1 This utility model provides a steam vapor-liquid separation device with silencing function under negative pressure conditions, including a tank device, a silencing device, a spray device, a negative pressure device, and a drainage device. The negative pressure device is located above and connected to the tank device. The silencing device is mounted on the tank device, with a portion of it located inside the tank device. The spray device is mounted on the negative pressure device, with a portion of it located inside the negative pressure device. The drainage device is located outside the tank device and connected to it. The silencing device is connected to a steam pipe.

[0027] Compared with the prior art, the steam vapor-liquid separation device with silencing function under negative pressure of this utility model delivers steam into the tank device through the silencing device, cools the steam in the tank device through the spray device, allows the steam in the tank device to be discharged quickly through the negative pressure device, and seals the steam in the tank device through the drainage device, thereby reducing noise and isolating steam leakage, solving the technical problems of high noise and large amount of mist in the prior art of high pressure steam.

[0028] In some embodiments, the tank assembly includes a first tank 1 and a second tank 2, the second tank 2 being located above and communicating with the first tank 1, and a silencing device being disposed on the first tank 1, with a portion of the silencing device located inside the first tank 1. This design allows for effective separation of steam entering the first tank 1 of the tank assembly through the silencing device. For example, the first tank 1 and the second tank 2 can be integrally formed. Alternatively, the first tank 1 and the second tank 2 can be welded together.

[0029] In some embodiments, the first tank 1 is a cylindrical shape with an open top. The first tank 1 has a first opening and a second opening on its side. The first opening is located above the second opening, and the distance between the second opening and the bottom of the first tank 1 is a first distance. This first distance is not strictly limited and can be designed according to the dimensions of the first tank 1. The first opening is used to install a silencer, and the second opening is used to install a drainage device. This design ensures that the steam entering the first tank 1 through the first opening can be fully condensed, and that the condensate is stored in the first tank 1 until a certain amount is discharged to the outside. For example, the first opening is located above the second opening, and the centers of the first and second openings are respectively located on two straight lines intersecting the side of the first tank 1 in the same plane passing through its axis.

[0030] In some embodiments, the height of the first tank 1 is greater than the nominal diameter of the first tank 1, the nominal diameter of the first tank 1 is 3200mm, and the height of the first tank 1 is 4600mm to 5000mm.

[0031] In some embodiments, the second tank 2 is shaped like a frustum with open ends. The top dimension of the second tank 2 is smaller than the bottom dimension. The axis of the second tank 2 is parallel to the axis of the first tank 1. The shape and size of the bottom of the second tank 2 match the shape and size of the top of the first tank 1. The bottom of the second tank 2 is fixedly connected to the top of the first tank 1. This design ensures better separation of condensate from the steam in the first tank 1 through steam settling.

[0032] In some embodiments, the nominal diameter of the bottom end of the second tank 2 is 3200mm, the nominal diameter of the top end of the second tank 2 is 400mm, and the height of the second tank 2 is 3000mm to 3500mm.

[0033] In some embodiments, the first tank 1 and the second tank 2 of the tank assembly are both made of duplex stainless steel.

[0034] In some embodiments, the silencing device is used to deliver steam into the tank assembly. The silencing device includes a silencing pipe 3, one end of which is evenly provided with a plurality of holes, and the perforated end of the silencing pipe 3 is located inside the tank assembly. The other end of the silencing pipe 3 is located outside the tank assembly and connected to a steam pipe. This design allows steam in the steam pipe to be injected into the tank assembly through the holes of the silencing device.

[0035] In some embodiments, the perforated end of the silencing pipe 3 extends into the interior of the first tank 1 through a first opening on the side of the first tank 1, so that the perforated end of the silencing pipe 3 is located inside the first tank 1.

[0036] In some embodiments, the steam pipe is a DN80 condensate steam pipe for the titanium dioxide waste acid concentration treatment process. Here, DN refers to the nominal diameter, in mm.

[0037] In some embodiments, the silencing pipe 3 is a cylindrical shape with one end open, and 300 to 400 identical holes are evenly distributed at one end of the silencing pipe 3 located inside the first tank 1 of the tank device. The other end of the silencing pipe 3 located outside the first tank 1 of the tank device is open and matches a steam pipe, so that the steam pipe can be connected to the silencing pipe 3 and sealed to the other end of the silencing pipe 3 located outside the first tank 1 of the tank device.

[0038] In some embodiments, the diameter of the hole in the silencing pipe 3 located at one end inside the first tank 1 of the tank device is 9 mm to 11 mm.

[0039] In some embodiments, the size of the silencing pipe 3 is DN200mm×3000mm, and the length of one end of the silencing pipe 3 located inside the first tank 1 of the tank device is 1400mm~1600mm.

[0040] The dispersion holes of the silencer deactivate the steam entering the tank through the silencer, thereby reducing noise. The noise reduction effect can be further enhanced by increasing the diameter of the silencer pipe 3 and the number of holes, thus improving the deactivation effect of the steam ejected through the holes of the silencer pipe 3.

[0041] In some embodiments, the silencing pipe 3 is a tapered tube open at one end, and 300 to 400 identical holes are uniformly arranged at one end of the silencing pipe 3 located inside the first tank 1 of the tank device. The other end of the silencing pipe 3 located outside the first tank 1 of the tank device is open and matches a steam pipe. For example, the inner diameter of the other end of the silencing pipe 3 located outside the first tank 1 of the tank device matches the outer diameter of the steam pipe, so that the steam pipe can be connected to the silencing pipe 3 and sealed to the other end of the silencing pipe 3 located outside the first tank 1 of the tank device. The nominal diameter of the end of the silencing pipe 3 located inside the first tank 1 of the tank device is larger than the nominal diameter of the end of the silencing pipe 3 located outside the first tank 1 of the tank device.

[0042] In some embodiments, the nominal diameter of the end of the silencing pipe 3 located inside the first tank 1 of the tank assembly is 200 mm, and the inner diameter of the opening at the end of the silencing pipe 3 located outside the first tank 1 of the tank assembly is 90 mm. The length of the silencing pipe 3 is 3000 mm, and the length of one end of the silencing pipe 3 located inside the first tank 1 of the tank assembly is 1400 mm to 1600 mm. The diameter of the hole at the end of the silencing pipe 3 located inside the first tank 1 of the tank assembly is 9 mm to 11 mm.

[0043] In some embodiments, the silencing duct 3 is made of ultra-low carbon austenitic stainless steel 316L.

[0044] In some embodiments, the negative pressure device includes a negative pressure pipe 4, an outlet pipe 5, and a negative pressure fan 6. The outlet pipe 5 is located above and communicates with the negative pressure pipe 4. The negative pressure fan 6 is disposed inside the outlet pipe 5 and directly opposite the negative pressure pipe 4. The negative pressure pipe 4 is located above and communicates with the second tank 2 of the tank assembly. This design ensures that the negative pressure fan 6 accelerates the extraction of steam from the tank assembly through the negative pressure pipe 4, allowing for rapid steam discharge.

[0045] In some embodiments, the negative pressure pipe 4 is a cylindrical shape with open ends. The shape and size of the bottom end of the negative pressure pipe 4 match the shape and size of the top end of the second tank 2 of the tank device, so that the bottom end of the negative pressure pipe 4 and the top end of the second tank 2 can be sealed together in a matching manner.

[0046] In some embodiments, the nominal diameter of the negative pressure tube 4 is 400 mm, and the length of the negative pressure tube 4 is 5000 mm to 6000 mm.

[0047] In some embodiments, the outlet tube 5 is a cylindrical shape with one end open. The axis of the outlet tube 5 is perpendicular to the axis of the negative pressure tube 4. A third opening is provided on the side of the outlet tube 5 adjacent to its unopened end, facing the top end of the negative pressure tube 4. The shape and size of the third opening match the shape and size of the top end of the negative pressure tube 4. The top end of the negative pressure tube 4 is aligned with the third opening and fixedly connected to the outlet tube 5. For example, the negative pressure tube 4 and the outlet tube 5 are fixedly connected by welding.

[0048] In some embodiments, the negative pressure fan 6 is located at the other end of the unopened outlet pipe 5 and is directly opposite the third opening, so the negative pressure fan 6 is directly opposite the top of the negative pressure pipe 4.

[0049] In some embodiments, the nominal diameter of the lead-out tube 5 is 600 mm.

[0050] In some embodiments, the negative pressure pipe 4 and the outlet pipe 5 of the negative pressure device are both made of duplex stainless steel.

[0051] In some embodiments, the spraying device includes a spray pipe 7, which is disposed on a negative pressure device. One end of the spray pipe 7 is located inside the negative pressure device, and a plurality of spray holes are evenly arranged at the end of the spray pipe 7 located inside the negative pressure device. This design ensures that the water in the spray pipe 7 is evenly sprayed into the negative pressure device and then into the tank device, reducing the temperature of the steam inside the tank device and causing the steam to condense quickly.

[0052] In some embodiments, the spray pipe 7 is disposed on the negative pressure pipe 4 of the negative pressure device, one end of the spray pipe 7 is located inside the negative pressure pipe 4 and a plurality of spray holes are uniformly disposed on the end of the spray pipe 7 located inside the negative pressure pipe 4.

[0053] In some embodiments, the nominal diameter of the spray pipe 7 is 50 mm.

[0054] In some embodiments, the spray pipe 7 is made of ultra-low carbon austenitic stainless steel 316L.

[0055] In some embodiments, a drainage device is used to connect the tank assembly to the underground water tank 12. The drainage device includes a first drain pipe 8, a second drain pipe 9, a third drain pipe 10, and a fourth drain pipe 11 connected in sequence. The first drain pipe 8 is connected to and communicates with the side of the tank assembly; the third drain pipe 10 is flush with the first drain pipe 8; the second drain pipe 9 is connected between the first drain pipe 8 and the third drain pipe 10, with its bottom lower than both the first and third drain pipes; and the fourth drain pipe 11 is connected to the third drain pipe 10 and to the underground water tank 12. This design ensures that condensate inside the tank assembly can be drained into the underground water tank 12 in a timely manner.

[0056] In some embodiments, the second drain pipe 9 is a U-shaped pipe, which is a tubular structure open at both ends and bent into a U-shape in the middle. The second drain pipe 9 includes a first straight pipe section, a second straight pipe section, and a curved pipe section located between the first and second straight pipe sections and connected to one end of each section. The other ends of the first and second straight pipe sections of the second drain pipe 9 are connected to one end of the first drain pipe 8 and the third drain pipe 10, respectively. The bottom of the curved pipe section of the second drain pipe 9 is below the first and third drain pipes 8 and 10. The second drain pipe 9 is used to control the condensate level inside the tank assembly, achieving a seal against steam leakage inside the tank assembly. This design can prevent steam leakage from the tank assembly.

[0057] In some embodiments, the first drain pipe 8 is connected to and communicates with the side of the first tank 1 of the tank assembly. For example, one end of the first drain pipe 8 is connected to the other end of the first straight section of the second drain pipe 9, and the other end of the first drain pipe 8 is connected to the second opening of the first tank 1 of the tank assembly.

[0058] In some embodiments, one end of the third drain pipe 10 is connected to the other end of the second straight pipe section of the second drain pipe 9, the other end of the third drain pipe 10 is connected to one end of the fourth drain pipe 11, and the other end of the fourth drain pipe 11 is connected to the underground water tank 12.

[0059] In some embodiments, the fourth drain pipe 11 is a curved pipe, and the end of the fourth drain pipe 11 connected to the third drain pipe 10 is higher than the end of the fourth drain pipe 11 connected to the underground water tank 12.

[0060] In some embodiments, the first drain pipe 8, the third drain pipe 10, and the fourth drain pipe 11 are all DN200 pipes, and the second drain pipe 9 is a DN200 U-shaped pipe.

[0061] The first drain pipe 8, the second drain pipe 9, the third drain pipe 10, and the fourth drain pipe 11 of the drainage device are U-shaped pipes added to the drainage pipes between the tank device and the underground water pool 12 to control the liquid level in the tank device, form a liquid seal, realize automatic water level regulation and overflow, reduce the installation of valves and liquid level gauges and other control spare parts, realize steam sealing in the tank device, and prevent steam leakage.

[0062] This utility model discloses a steam-liquid separation device with a noise reduction function under negative pressure conditions, such as... Figure 1As shown, the device includes a tank assembly, a silencing device, a spraying device, a negative pressure device, and a drainage device. The second tank 2 of the tank assembly is located above and communicates with the first tank 1. The nominal diameter of the first tank 1 is 3200 mm and its height is 5000 mm. The nominal diameter of the bottom of the second tank 2 is 3200 mm, the nominal diameter of the top is 400 mm, and its height is 3000 mm. The silencing pipe 3 of the silencing device is a cylindrical shape with one open end. The end of the silencing pipe 3 located inside the first tank 1 has 300 holes of 10 mm diameter evenly distributed. The dimensions of the silencing pipe 3 are DN200 mm × 3000 mm, and the length of the end of the silencing pipe 3 located inside the first tank 1 is 1500 mm. The bottom end of the negative pressure pipe 4 of the negative pressure device is sealed to the top end of the second tank 2. The nominal diameter of the negative pressure pipe 4 is 400 mm and the length is 5000 mm. The outlet pipe 5 is located above the negative pressure pipe 4 and is connected to the negative pressure pipe 4. The nominal diameter of the outlet pipe 5 is 600 mm. The negative pressure fan 6 is installed inside the outlet pipe 5 and faces the negative pressure pipe 4. One end of the spray pipe 7 of the spray device is located inside the negative pressure pipe 4, and multiple spray holes are evenly arranged on the end of the spray pipe 7 inside the negative pressure pipe 4. The nominal diameter of the spray pipe 7 is 50 mm. The first drain pipe 8 of the drainage device is connected to the side of the first tank 1 and is connected to the first tank 1. The third drain pipe 10 is flush with the first drain pipe 8. The second drain pipe 9 is a U-shaped pipe and is connected between the first drain pipe 8 and the third drain pipe 10. The fourth drain pipe 11 is connected to the third drain pipe 10 and is connected to the underground water tank 12.

[0063] The steam-liquid separation device with silencing function under negative pressure is used after the titanium dioxide waste acid concentration treatment process to recover and discharge the heat exchange medium steam of the preheater system, primary heater system, and secondary heater system in the titanium dioxide waste acid concentration treatment process.

[0064] This utility model discloses a steam vapor-liquid separation device with a silencing function under negative pressure. A DN200 silencing pipe 3 with 300-400 holes is installed on the tank device. By increasing the pipe diameter and increasing the steam outlet, the steam is deactivated, effectively reducing noise. A DN200 U-shaped pipe installed at the bottom of the tank device achieves steam sealing, which can reduce the installation of valves and liquid level gauges and other control components, and realize automatic water level regulation and overflow. A spray pipe 7 is installed above the tank device to reduce the steam temperature and make it condense quickly.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vapor-liquid separation device with sound attenuation function under negative pressure conditions, characterized in that, The device includes a tank assembly, a silencing device, a spraying device, a negative pressure device, and a drainage device. The negative pressure device is located above the tank assembly and communicates with the tank assembly. The silencing device is disposed on the tank assembly and a portion of the silencing device is located inside the tank assembly. The spraying device is disposed on the negative pressure device and a portion of the spraying device is located inside the negative pressure device. The drainage device is located outside the tank assembly and communicates with the tank assembly.

2. The vapor-liquid separation device with a sound attenuation function under a negative pressure condition according to claim 1, characterized in that, The tank assembly includes a first tank (1) and a second tank (2), the second tank (2) being located above the first tank (1) and communicating with the first tank (1), and the silencing device being disposed on the first tank (1) with a portion of the silencing device located inside the first tank (1).

3. The vapor-liquid separation device with sound attenuation function under negative pressure according to claim 2, characterized in that, Both the first tank (1) and the second tank (2) are made of duplex stainless steel.

4. The steam vapor-liquid separator with silencing function under negative pressure conditions according to claim 1, characterized in that, The silencing device includes a silencing pipe (3), one end of which is evenly provided with a plurality of holes and the end of the silencing pipe (3) with holes is located inside the tank device, and the other end of the silencing pipe (3) is located outside the tank device and connected to a steam pipe.

5. The vapor-liquid separation device with sound attenuation function under negative pressure according to claim 4, characterized in that, The diameter of the hole at one end of the silencing pipe (3) located inside the tank device is 9mm to 11mm; the length of the end of the silencing pipe (3) located inside the tank device is 1400mm to 1600mm.

6. The vapor-liquid separation device with sound attenuation function under negative pressure according to claim 4, characterized in that, The silencing pipe (3) is made of ultra-low carbon austenitic stainless steel 316L.

7. The vapor-liquid separation device with sound attenuation function under negative pressure according to claim 1, characterized in that, The negative pressure device includes a negative pressure pipe (4), an outlet pipe (5) and a negative pressure fan (6). The outlet pipe (5) is located above the negative pressure pipe (4) and is connected to the negative pressure pipe (4). The negative pressure fan (6) is installed inside the outlet pipe (5) and faces the negative pressure pipe (4).

8. The vapor-liquid separation device with sound attenuation function under negative pressure according to claim 1, characterized in that, The spraying device includes a spray pipe (7), which is disposed on the negative pressure device. One end of the spray pipe (7) is located inside the negative pressure device, and the end of the spray pipe (7) located inside the negative pressure device is provided with a plurality of spray holes.

9. The vapor-liquid separation device with sound attenuation function under negative pressure according to claim 1, characterized in that, The drainage device includes a first drain pipe (8), a second drain pipe (9), a third drain pipe (10), and a fourth drain pipe (11) connected in sequence. The first drain pipe (8) is connected to the side of the tank device and communicates with the tank device. The third drain pipe (10) is flush with the first drain pipe (8). The second drain pipe (9) is connected between the first drain pipe (8) and the third drain pipe (10), and the bottom of the second drain pipe (9) is lower than the first drain pipe (8) and the third drain pipe (10).

10. The vapor-liquid separation device with sound attenuation function under negative pressure according to claim 9, characterized in that, The second drain pipe (9) is a U-shaped pipe.

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