Compound condenser

Abstract

The composite condenser comprises a first part, a second part, a third part and a fourth part. The first part comprises a spraying device configured to spray a spraying medium downward. The second part comprises a first heat exchanger. The first heat exchanger comprises a first tube plate, a second tube plate and a plurality of glass tubes through which a first low-temperature medium passes. Two ends of the plurality of glass tubes are respectively penetrated through and fixed to the first tube plate and the second tube plate. The third part comprises a second heat exchanger. The second heat exchanger comprises a metal tube bundle through which a second low-temperature medium passes. The fourth part comprises a liquid collection tray configured to collect condensed liquid. The first part, the second part, the third part and the fourth part are sequentially connected from top to bottom. The gas to be condensed entering the composite condenser passes through the first part, the second part and the third part in sequence, so as to be cooled, and is discharged from the fourth part.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment technology. More specifically, this invention relates to a clog-resistant glass tube and metal tube composite condenser. Background Technology

[0002] A condenser is a type of heat exchanger that converts condensable gases into liquids. The operation of a condenser is exothermic. The released heat can be recovered and reused to heat other media, making it widely used in various processes in industrial production.

[0003] However, in many industrial applications, the gas to be condensed contains highly corrosive substances and carries various impurities that are prone to clogging, such as dust and fibers. This can corrode or clog the condenser, affecting the heat exchange effect and even damaging the condenser. Summary of the Invention

[0004] Therefore, the object of this invention is to provide a glass tube and metal tube composite condenser that can at least partially solve the above-mentioned problems. It fully utilizes the advantages of both glass tube and metal tube heat exchangers, improving the overall performance of the composite condenser. It is also equipped with a corresponding spray device to prevent impurities from depositing on the glass tubes and / or metal tubes, reducing heat exchange efficiency, and damaging the composite condenser. The gas to be condensed is condensed into a liquid or saturated gas in the composite condenser, and then transferred to an external system for centralized processing via pipelines. Furthermore, the composite condenser of this invention can recover the heat released during the condensation process of the liquid to be condensed and use it to heat the low-temperature medium, preventing heat waste.

[0005] The composite condenser according to the present invention comprises: a first part including a spray device configured to spray a spray medium downwards; a second part including a first heat exchanger including a first tube sheet, a second tube sheet, and a plurality of glass tubes through which a first cryogenic medium passes, the two ends of the plurality of glass tubes respectively passing through and fixed to the first tube sheet and the second tube sheet; a third part including a second heat exchanger including a metal tube bundle through which a second cryogenic medium passes; and a fourth part including a liquid collection tray configured to collect condensed liquid and uncondensed gas; wherein the first part, the second part, the third part, and the fourth part are connected sequentially from top to bottom, and the gas to be condensed entering the composite condenser passes sequentially through the first part, the second part, and the third part, and exits the composite condenser from the fourth part.

[0006] The second part of the composite condenser according to the invention further includes a plurality of metal tubes through which a first cryogenic medium passes, the two ends of the plurality of metal tubes passing through and being fixed to a first tube sheet and a second tube sheet respectively, and the plurality of metal tubes being located above the plurality of glass tubes.

[0007] According to a preferred embodiment of the present invention, the plurality of metal tubes are parallel to each other and arranged in a single layer above the plurality of glass tubes.

[0008] According to a preferred embodiment of the present invention, the spraying range of the spraying device in the first part covers a single layer of the plurality of metal pipes arranged in a single layer.

[0009] According to a preferred embodiment of the present invention, the plurality of metal tubes and the plurality of glass tubes are arranged in a rectangular pattern, wherein each glass tube and each metal tube is parallel to each other.

[0010] According to a preferred embodiment of the present invention, the plurality of metal tubes and the plurality of glass tubes are inclined relative to the horizontal plane, and the angle of inclination is in the range of 1° to 5°.

[0011] Optionally, the composite condenser according to the present invention further includes a main shell, with a first part, a second part, a third part, and a fourth part located inside the main shell. The main shell has a condensable gas inlet for the gas to be condensed and a spray medium inlet for the spray medium at the first part; the main shell has a first cryogenic medium inlet for a first cryogenic medium on one side of the first tube sheet at the second part, and a first cryogenic medium outlet for the first cryogenic medium to be discharged at one side of the second tube sheet at the second part; the main shell has a second cryogenic medium inlet for a second cryogenic medium to be condensed and a second cryogenic medium outlet for the second cryogenic medium to be discharged at the third part; and the main shell has a composite condenser outlet at the fourth part, from which condensate and saturated gas are discharged.

[0012] According to a preferred embodiment of the present invention, the main housing is a sealed structure, and the pipes connecting the gas inlet to be condensed, the spray medium inlet, the first low-temperature medium inlet, the first low-temperature medium outlet, the second low-temperature medium inlet, the second low-temperature medium outlet, the composite condenser outlet, and the external pipes of the composite condenser are all sealed.

[0013] According to a preferred embodiment of the present invention, the composite condenser further includes a negative pressure device located at the lower part of the fourth part, which provides a negative pressure environment inside the composite condenser, thereby increasing the downward force for the flow of the gas to be condensed.

[0014] According to a preferred embodiment of the present invention, the first part further includes a first temperature monitoring device configured to monitor the temperature of the gas to be condensed entering the composite condenser; the first part further includes a controller communicatively connected to the first temperature monitoring device and configured to receive a signal from the first temperature monitoring device, and when the temperature of the gas to be condensed exceeds a first predetermined threshold, to cause a spray device to spray a low-temperature liquid to prevent damage to the composite condenser.

[0015] According to a preferred embodiment of the present invention, the second part further includes a second temperature monitoring device configured to monitor the temperature of the first cryogenic medium at the glass tube outlet of the first heat exchanger. This second temperature monitoring device is communicatively connected to the controller in the first part. When the temperature of the first cryogenic medium at the glass tube outlet is lower than a second predetermined threshold, the spray device sprays liquid to improve the heat exchange efficiency of the heat exchanger. Alternatively, the spray can be started periodically by a timer to keep the surface of the heat exchange tubes clean and maintain the heat exchange efficiency of the heat exchanger.

[0016] According to a preferred embodiment of the present invention, the ends of the glass tubes can be sealed with rubber or non-metallic plugs. If an individual glass tube breaks, only the end of that glass tube needs to be sealed with a plug, without affecting the normal operation of the composite condenser. If the heat exchange required by the first low-temperature medium is reduced, this can also be achieved by sealing part of the glass tubes. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the composite condenser 1 according to the present invention;

[0018] Figure 2 It is along Figure 1 Another cross-sectional view of the composite condenser 1 according to the present invention, taken along line AA.

[0019] List of reference numerals

[0020] 1. Compound condenser

[0021] 10 Main housing

[0022] 11. Gas inlet to be condensed

[0023] 12 Spray media inlet

[0024] 13 First Cryogenic Medium Inlet

[0025] 14 First Cryogenic Medium Outlet

[0026] 15 Second Cryogenic Medium Inlet

[0027] 16 Second Cryogenic Medium Outlet

[0028] 17. Combined condenser outlet

[0029] 100 Part 1

[0030] 101 Spraying Device

[0031] 101a nozzle

[0032] 102 Pipeline

[0033] 103 First Temperature Monitoring Device

[0034] 104 Controller

[0035] 200 Part Two

[0036] 201 Second Temperature Monitoring Device

[0037] 210 First heat exchanger

[0038] 211 First Tube Sheet

[0039] 212 Second Tube Sheet

[0040] 213 Glass Tube

[0041] 214 First heat exchanger shell

[0042] 215 metal pipe

[0043] 300 Part Three

[0044] 310 Second heat exchanger

[0045] 311 Metal tube bundle

[0046] 312 Second heat exchanger shell

[0047] 400 Part Four

[0048] 401 Fluid Collection Plate

[0049] 402 Negative Pressure Device

[0050] F1 Direction of gas flow to be condensed

[0051] F2 First cryogenic medium flow direction

[0052] F3 Second Low Temperature Medium Flow Direction Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention. Unless otherwise stated, the terms used herein have their ordinary meaning in the art. The same reference numerals in the drawings represent the same parts.

[0054] Figure 1A cross-sectional view of a composite condenser 1 according to the present invention is shown. The composite condenser 1 includes a first part 100, a second part 200, a third part 300 and a fourth part 400 connected sequentially from top to bottom. Adjacent parts are interconnected in the vertical direction to form a path for the gas to be condensed to pass through.

[0055] Figure 2 It is along Figure 1 Another cross-sectional view of the composite condenser 1 according to the present invention, taken along line AA. (See image below.) Figure 2 As shown, the first part 100 includes a spray device 101, which includes at least one nozzle 101a. These nozzles 101a are interconnected by a pipe 102, which is connected to a spray medium source outside the composite condenser 1 for supplying spray medium to the nozzles 101a of the spray device 101.

[0056] The second part 200 is located below the first part 100 and includes a first heat exchanger 210, which is a glass tube heat exchanger. The first heat exchanger 210 includes a first heat exchanger shell 214, a first tube sheet 211 and a second tube sheet 212 mounted to the first heat exchanger shell 214, and a plurality of glass tubes 213 fixed to the first and second tube sheets 211 and 212. The first heat exchanger shell 214 in the second part 200 is preferably in the form of a cuboid frame, with its top open towards the first part 100 and its bottom open towards the third part 300. Two opposite sides of the cuboid frame perpendicular to the horizontal plane are closed by metal plates. The first tube sheet 211 and the second tube sheet 212 are mounted to the other two opposite sides of the frame perpendicular to the horizontal plane. Preferably, the first tube sheet 211 and the second tube sheet 212 are parallel to each other and perpendicular to the horizontal plane. A first cryogenic medium flows into the plurality of glass tubes 213 from one side of the first tube sheet 211 and flows out of the plurality of glass tubes 213 from one side of the second tube sheet 212, for cooling the gas to be condensed.

[0057] like Figure 2 As shown, multiple glass tubes 213 have their ends passed through and fixed to a first tube sheet 211 and a second tube sheet 212, respectively, and each of the multiple glass tubes 213 is parallel to each other. The material of the multiple glass tubes 213 is preferably quartz glass, high-silica glass, or borosilicate glass, but is not limited to these, and is ultimately determined according to the characteristics of the heat exchange medium and process requirements. The first tube sheet 211 and the second tube sheet 212 are preferably composite tube sheets, with a metal plate inside and a plastic lining outside. This helps to achieve a stable fixation between the glass tubes and the tube sheet, and improves the sealing effect between the outer wall of the glass tube and the tube sheet.

[0058] The third part 300 is located below and communicates with the second part 200. The third part 300 includes a second heat exchanger 310, preferably a shell-and-tube heat exchanger. The second heat exchanger 310 includes a second heat exchanger shell 312 and a metal tube bundle 311 located inside the second heat exchanger shell 312. A second cryogenic medium flows through the metal tube bundle 311 for further cooling of the gas to be condensed. Preferably, the metal tube bundle inside the second heat exchanger shell 312 is arranged perpendicularly to the glass tube 213 and metal tube 215 inside the first heat exchanger shell 214.

[0059] The fourth section 400 is located below and communicates with the third section 300. The fourth section 400 includes a condensate tray 401 for collecting condensate formed after the gas to be condensed is cooled by the first heat exchanger 210 and the second heat exchanger 310 above it. Figure 2 As can be seen, the liquid collection tray 401 is inclined relative to the horizontal plane so that the condensate can flow out of the compound condenser 1 and be centrally treated.

[0060] Preferably, the fourth part 400 further includes a negative pressure device 402. For example... Figure 2 As shown, the negative pressure device 402 is located at the lower part of the fourth part 400, preferably at the outlet of the liquid collection pan 401, and is used to provide a negative pressure environment inside the entire compound condenser 1 equipment and to increase the power for the downward flow of the gas to be condensed.

[0061] When the compound condenser 1 is running, the gas to be condensed enters the compound condenser 1 from the first section 100 and flows downwards in a negative pressure environment. It first passes through the first heat exchanger 210 in the second section 200, where it is cooled to a medium temperature by the first low-temperature medium flowing through the multiple glass tubes 213 of the first heat exchanger 210. The flow direction of the gas to be condensed is as follows: Figure 2 The hollow arrow F1 in the diagram indicates the flow direction of the first cryogenic medium in the glass tube 213 as shown in the diagram. Figure 2 As indicated by arrow F2, the first cryogenic medium enters the glass tube 213 from one side of the first tube sheet 211 and exits the glass tube 213 from one side of the second tube sheet 212. The first cryogenic medium is, for example, air or a process gas used in industrial production, and its flow rate is in the range of 5 to 20 m / s.

[0062] After passing through the first heat exchanger 210, the medium-temperature gas to be condensed continues to flow downwards and enters the second heat exchanger 310 in the third section 300, where it is further cooled by the second cryogenic medium flowing through the metal tube bundle 311 of the second heat exchanger 310. The flow direction of the second cryogenic medium in the metal tube bundle 311 is as follows: Figure 1As indicated by arrow F3 in the diagram. The second cryogenic medium is a high specific heat capacity liquid, such as water or refrigerant. The second heat exchanger 310 controls its cooling effect by controlling the flow rate or temperature of the second cryogenic medium flowing through the metal tube bundle 311, ensuring that the environment in the shell of the second heat exchanger is a wet environment, i.e., the area around the metal tube bundle 311 is saturated or supersaturated gas. After passing through the second heat exchanger 310, condensable substances in the intermediate-temperature gas are cooled and converted into condensate, which drips into the condensate pan 401 of the fourth part 400 and flows out of the composite condenser 1.

[0063] Since the gas to be condensed may carry various impurities such as dust and fibers that are prone to clogging, these impurities may deposit on the outer wall of the glass tubes after the composite condenser 1 has been running for a period of time, reducing the heat exchange efficiency of the glass tube heat exchanger. At this time, the spray device 101 in the first part 100 can be turned on to flush the glass tubes below to remove impurities. The pipe 102 delivers the spray medium (such as water or cleaning agent) to each nozzle 101a of the spray device 101. The nozzles 101a spray the spray medium downward at high speed, and the spray medium flows downward through the gaps in the glass tubes 213. The flushed liquid drips into the sump 401 of the fourth part 400 and then flows out of the composite condenser 1.

[0064] In a preferred embodiment of the invention, the first heat exchanger 210 further includes a plurality of metal tubes 215 through which a first cryogenic medium passes. The plurality of metal tubes 215 are located above the plurality of glass tubes 213 and are arranged similarly to the plurality of glass tubes 213, with their ends passing through and fixed to a first tube sheet 211 and a second tube sheet 212, respectively. Each of the plurality of metal tubes 215 is parallel to each other, and these metal tubes 215 are also parallel to each of the plurality of glass tubes 213. Preferably, the plurality of metal tubes 215 are arranged in a single layer above the plurality of glass tubes 213, parallel to each other. Figure 1 and Figure 2 As can be seen, the topmost layer of the second part 200 is a metal pipe 215. This prevents the glass pipe from shattering even in the event of accidental parts falling during maintenance or replacement of the spray nozzles 101a and pipes 102 of the spray device 101, greatly improving the safety and stability of the composite condenser. Simultaneously, this arrangement increases the overall rigidity of the equipment and optimizes the overall structural design.

[0065] In a preferred embodiment of the present invention, the plurality of glass tubes 213 and the plurality of metal tubes 215 are arranged in a rectangular shape. Figure 1The cross-section of the second part 200 illustrates this arrangement. Multiple glass tubes 213 and multiple metal tubes 215 are arranged parallel to each other without intersecting, allowing the spray medium to flow more smoothly. This facilitates a more thorough cleaning of impurities deposited on the outer walls of the glass tubes 213 and metal tubes 215, ensuring efficient heat exchange between the gas to be condensed and the low-temperature medium flowing within the glass tubes 213 and metal tubes 215. Furthermore, the spray range of the nozzles 101a of the spray device 101 is configured to cover the single layer of the uppermost metal tubes 215.

[0066] In a particularly preferred embodiment of the invention, the plurality of glass tubes 213 and the plurality of metal tubes 215 are inclined relative to the horizontal plane, such as Figure 2 As shown, the tilt angle α is in the range of 1° to 5°. The tilted glass tube 213 and metal tube 215 further promote the flow of the spray medium, which helps to more thoroughly clean the impurities deposited on the outer walls of the glass tube 213 and metal tube 215. In addition, if the first cryogenic medium flowing through the glass tube 213 and metal tube 215 is a gas containing impurities, this tilting arrangement is beneficial for carrying away dust impurities in the first cryogenic medium within a reasonable flow rate range, optimizing heat exchange efficiency, and also helps to clean the inner walls of the glass tube 213 and metal tube 215.

[0067] Optionally, the composite condenser 1 according to the present invention may further include a main housing 10, wherein the first part 100, the second part 200, the third part 300, and the fourth part 400 are all located inside the main housing 10. Figure 1 As shown, the main housing 10 has a condensable gas inlet 11 at the first part 100 for the condensable gas to enter; as Figure 2 As shown, the main housing 10 also has a spray medium inlet 12 at the first part 100 for the spray medium to enter, and the pipe 102 for conveying the spray medium supplies the spray medium to the nozzle 101a of the spray device 101 through the spray medium inlet 12. Figure 2 As shown, the main housing 10 has a first cryogenic medium inlet 13 for the first cryogenic medium to enter on one side of the first tube sheet 211 of the second part 200, and a first cryogenic medium outlet 14 for the first cryogenic medium to exit on one side of the second tube sheet 212 of the second part 200. Figure 1 As shown, the main housing 10 has a second cryogenic medium inlet 15 for the second cryogenic medium to enter and a second cryogenic medium outlet 16 for the second cryogenic medium to exit at the third section 300. The main housing 10 has a compound condenser outlet 17 at the fourth section 400 for discharging cooled condensate and saturated gas, and for discharging cleaned liquid during cleaning.

[0068] The main casing 10 is a sealed structure made of metal, and the pipes connecting the gas to be condensed inlet 11, the spray medium inlet 12, the first cryogenic medium inlet 13, the first cryogenic medium outlet 14, the second cryogenic medium inlet 15, the second cryogenic medium outlet 16, and the composite condenser outlet 17 to the outside of the composite condenser 1 are all sealed. This sealed structure ensures a negative pressure environment inside the composite condenser 1, improving the heat exchange efficiency between the gas to be condensed and the first and second cryogenic media. Furthermore, when the gas to be condensed is toxic, harmful, or odorous, it prevents leakage into the environment and thus environmental pollution.

[0069] Optionally, the first part 100 of the composite condenser 1 further includes a first temperature monitoring device 103 and a controller 104 communicatively connected to the first temperature monitoring device. The first temperature monitoring device 103 is, for example, a temperature sensor. The first temperature monitoring device 103 monitors the temperature of the gas to be condensed entering the composite condenser 1. When the temperature of the gas to be condensed exceeds a first predetermined threshold, it sends a signal to the controller 104, causing the spray device 101 to spray liquid (e.g., water). The sprayed low-temperature liquid comes into direct contact with the gas to be condensed, cooling the interior of the composite condenser 1 and preventing the excessively hot gas from damaging the composite condenser 1. The sprayed water and condensate are also collected and discharged through the condensate tray 401 of the fourth part 400, thereby achieving high-temperature protection for the entire composite condenser system.

[0070] Optionally, the second part 200 of the composite condenser 1 further includes a second temperature monitoring device 201, communicatively connected to the controller 104 in the first part 100. The second temperature monitoring device 201 is, for example, a temperature sensor. This second temperature monitoring device 201 is configured to monitor the temperature of the first cryogenic medium at the outlet of the glass tube 213 of the first heat exchanger 210. When the temperature of the first cryogenic medium, heated by the gas to be condensed, discharged from the glass tube 213 is lower than a second predetermined threshold, this means that the heat exchange efficiency of the first heat exchanger 210 has decreased. At this time, the controller 104 causes the spray device 101 to spray liquid downwards, such as filtered liquid condensed from the composite condenser, a cleaning liquid, or a cleaning agent, to flush the outer walls of the glass tube 213 and metal tube 215 of the first heat exchanger 210, and the outer wall of the metal tube bundle 311 of the second heat exchanger 310, preventing the accumulation of dirt on the outer walls of the heat exchange tubes, which could lead to a decrease in heat exchange efficiency and damage to the heat exchangers. The flushing liquid, carrying dirt, flows downwards and is then collected and discharged by the collection tray 401 of the fourth section 400.

[0071] Optionally, the spray device 101 can be activated at regular intervals by a timer to spray liquid downwards to flush the outer walls of the glass tubes 213 and metal tubes 215 of the first heat exchanger 210, as well as the outer wall of the metal tube bundle 311 of the second heat exchanger 310, so as to prevent the accumulation of dirt on the outer wall of the heat exchange tubes and reduce the heat exchange efficiency, and maintain the heat exchange efficiency of the heat exchanger.

[0072] The composite condenser 1 according to the present invention combines the advantages of a glass tube heat exchanger (first heat exchanger 210) and a shell-and-tube metal heat exchanger (second heat exchanger 310), improving the overall performance of the composite condenser. The upper part of the composite condenser 1 is equipped with a spray device 101, and the lower part is equipped with a liquid collection tray 401 for collecting liquid, allowing for online cleaning of the first and second heat exchangers without disassembly. This prevents impurities entrained in the gas to be condensed from depositing on the outer walls of the glass and metal tubes of the heat exchangers, hindering heat exchange between the gas to be condensed and the low-temperature medium, and reducing the heat exchange efficiency of the composite condenser 1. Specifically, the plurality of glass tubes 213 and the plurality of metal tubes 215 in the first heat exchanger 210 are arranged in a rectangular shape and are positioned at an angle relative to the horizontal plane. This arrangement facilitates the downward flow of the cleaning liquid sprayed from the top of the composite condenser 1 and aids in cleaning the inner walls of the glass and metal tubes.

[0073] Furthermore, the sealed main casing 10 helps maintain a negative pressure environment, further improving the heat exchange efficiency of the composite condenser 1, allowing for better recovery and utilization of the heat from the gas to be condensed. The sealed environment prevents leakage of the gas to be condensed, thus preventing pollution to the external environment.

[0074] The foregoing description of exemplary embodiments of the composite condenser proposed in this invention has been detailed with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of this invention, and various combinations can be made to the various technical features and structures proposed in this invention without exceeding the protection scope of this invention.

Claims

1. A composite condenser (1), comprising: The first part (100) includes a spraying device (101) configured to spray a spraying medium downwards; The second part (200) includes a first heat exchanger (210), which includes a first tube sheet (211), a second tube sheet (212), and a plurality of glass tubes (213) for a first cryogenic medium to pass through. The two ends of the plurality of glass tubes (213) pass through and are fixed to the first tube sheet (211) and the second tube sheet (212), respectively. The first cryogenic medium is a gas. The third part (300) includes a second heat exchanger (310), which includes a metal tube bundle (311) through which a second cryogenic medium passes, the second cryogenic medium being a liquid with high specific heat capacity. The fourth part (400) includes a liquid collection tray (401) configured to collect condensed liquid; The first part (100), the second part (200), the third part (300) and the fourth part (400) are connected from top to bottom. The gas to be condensed entering the composite condenser (1) passes through the first part (100), the second part (200) and the third part (300) in sequence, thereby being cooled, and is discharged from the composite condenser (1) from the fourth part (400). Wherein, the first low-temperature medium is air or process gas in industrial production, the plurality of glass tubes (213) are arranged parallel to each other and spaced apart from each other, and the second part (200) is configured to allow the gas to be condensed to flow outside the plurality of glass tubes (213) and be cooled to a medium-temperature gas under the action of the first low-temperature medium flowing through the plurality of glass tubes (213), so that at least some of the easily clogging impurities entrained in the gas to be condensed are deposited on the outer wall of the plurality of glass tubes (213); The third part (300) is configured to receive the medium-temperature gas cooled by the second part (200) and in which at least some of the easily clogged impurities have been deposited on the outer walls of the plurality of glass tubes (213), and to allow the medium-temperature gas to flow outside the metal tube bundle (311). The second heat exchanger (310) is configured to control the cooling effect of the second heat exchanger (310) by controlling the flow rate or temperature of the second low-temperature medium flowing through the metal tube bundle (311), so that the environment in the shell of the second heat exchanger (310) is a wet environment, that is, the area around the metal tube bundle (311) is saturated or supersaturated gas, so that the condensable substances in the medium-temperature gas are cooled and converted into condensate and drip into the condensate pan (401).

2. The compound condenser (1) according to claim 1, wherein The second part (200) also includes a plurality of metal tubes (215) through which the first cryogenic medium passes, the two ends of the plurality of metal tubes (215) passing through and fixed to the first tube sheet (211) and the second tube sheet (212) respectively, and the plurality of metal tubes (215) being located above the plurality of glass tubes (213).

3. The composite condenser (1) according to claim 2, wherein, The plurality of metal tubes (215) are parallel to each other and arranged in a single layer above the plurality of glass tubes (213).

4. The composite condenser (1) according to claim 3, wherein, The spraying range of the spraying device (101) covers a single layer of the plurality of metal pipes (215) arranged in a single layer.

5. The composite condenser (1) according to claim 2, wherein, The plurality of metal tubes (215) and the plurality of glass tubes (213) are arranged in a rectangular pattern.

6. The composite condenser (1) according to claim 2, wherein, The plurality of metal tubes (215) and the plurality of glass tubes (213) are inclined relative to the horizontal plane.

7. The composite condenser (1) according to claim 6, wherein, The angle (α) at ​​which the plurality of metal tubes (215) and the plurality of glass tubes (213) are tilted relative to the horizontal plane is in the range of 1° to 5°.

8. The composite condenser (1) according to claim 1 further includes a main housing (10), wherein the first part (100), the second part (200), the third part (300), and the fourth part (400) are located inside the main housing (10). in, The main housing (10) has a condensable gas inlet (11) for the condensable gas to enter and a spray medium inlet (12) for the spray medium to enter at the first part (100). The main housing (10) has a first cryogenic medium inlet (13) for the first cryogenic medium to enter on one side of the first tube sheet (211) of the second part (200), and a first cryogenic medium outlet (14) for the first cryogenic medium to exit on one side of the second tube sheet (212) of the second part (200). The main housing (10) has a second cryogenic medium inlet (15) for the second cryogenic medium to enter and a second cryogenic medium outlet (16) for the second cryogenic medium to exit at the third part (300). The main housing (10) has a compound condenser outlet (17) at the fourth part (400), from which saturated gas and condensate are discharged.

9. The composite condenser (1) according to claim 8, wherein, The main housing (10) is a sealed structure, and the gas inlet (11), spray medium inlet (12), first low temperature medium inlet (13), first low temperature medium outlet (14), second low temperature medium inlet (15), second low temperature medium outlet (16) and composite condenser outlet (17) are all sealed to the pipes outside the composite condenser (1).

10. The composite condenser (1) according to any one of claims 1-9 further includes a negative pressure device (402) located at the lower part of the fourth part (400) for providing a negative pressure environment inside the composite condenser (1).

11. The composite condenser (1) according to any one of claims 1-9, wherein, The first part (100) also includes: A first temperature monitoring device (103) is configured to monitor the temperature of the gas to be condensed entering the composite condenser (1); The controller (104) is communicatively connected to the first temperature monitoring device (103) and configured to receive a signal from the first temperature monitoring device (103) and to cause the spray device (101) to spray liquid when the temperature of the gas to be condensed exceeds a first predetermined threshold.

12. The composite condenser (1) according to claim 11, wherein, The second part (200) further includes a second temperature monitoring device (201), which is configured to monitor the temperature of the first low-temperature medium at the outlet of the glass tube (213) of the first heat exchanger (210), and the second temperature monitoring device (201) is communicatively connected to the controller (104). When the temperature of the first low-temperature medium at the outlet of the glass tube (213) is lower than a second predetermined threshold, the spray device (101) sprays liquid.

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