High efficiency tower heat exchanger

Abstract

The utility model provides a kind of efficient tower heat exchanger, it includes vertically arranged cylinder and with the upper end of cylinder fixed upper head and with the lower end of cylinder fixed shell, upper head is fixedly provided with tube sheet in, tube sheet is also provided with through-hole on, and tube sheet fixedly connected with the heat exchange tube in cylinder, first inlet pipe and first outlet pipe are provided on upper head, and the both ends of heat exchange tube are connected with first inlet pipe and first outlet pipe respectively, the top of upper head is also provided with lead-out pipe, second inlet pipe is provided on cylinder, third inlet pipe and located in the drain pipe of shell bottom are provided on shell;Multiple baffles arranged sequentially from top to bottom are further fixedly connected in cylinder, perforation is provided on baffle for heat exchange tube to pass through, and multiple notches are recessed in the inner wall of perforation.The utility model solves the problem of poor separation effect caused by poor heat transfer effect in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of tower heat exchange equipment, and in particular to a high-efficiency tower heat exchanger. Background Technology

[0002] Tower heat exchangers are a type of mass and heat transfer device widely used in petrochemical production processes. They generally consist of a vertical cylindrical shell, multiple baffles spaced vertically within the shell, a shell located below the shell, and an upper head fixed above the shell. The top of the upper head also has a discharge pipe. Under the influence of gravity, the liquid flows from top to bottom through each baffle and enters the shell, finally exiting through the drain pipe at the bottom of the shell. The gas rises from the shell through the baffles to the top of the upper head and then exits through the discharge pipe at the top. During this process, the gas and liquid come into contact and exchange heat. On the baffles, the liquid and gas phases fully contact and mix, resulting in heat and mass transfer. Each baffle allows for bidirectional mass transfer between the gas and liquid phases. The rising vapor condenses, while the descending reflux liquid vaporizes, further separating the light and heavy components step by step. Due to the long path, the temperature gradually tends to uniformity, resulting in poor heat transfer and unsatisfactory separation. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a high-efficiency tower heat exchanger that solves the problem of poor heat transfer leading to unsatisfactory separation results in existing technologies.

[0004] According to an embodiment, a high-efficiency tower heat exchanger is provided, which includes a vertically arranged cylinder, an upper end cap fixed to the upper end of the cylinder, and a shell fixed to the lower end of the cylinder. A tube sheet is fixedly arranged inside the upper end cap, and through holes are also provided on the tube sheet. Heat exchange tubes located inside the cylinder are fixedly connected to the tube sheet. A first inlet pipe and a first outlet pipe are provided on the upper end cap. The two ends of the heat exchange tubes are respectively connected to the first inlet pipe and the first outlet pipe. An outlet pipe is also provided at the top of the upper end cap. A second inlet pipe is provided on the cylinder, and a third inlet pipe and a drain pipe located at the bottom of the shell are provided on the shell. Multiple baffles arranged sequentially from top to bottom are also fixedly connected inside the cylinder. The baffles are provided with perforations for the heat exchange tubes to pass through, and the inner wall of the perforations is recessed with multiple notches. In this scheme, the liquid is introduced from the second inlet pipe and flows downward through the baffles. The gas is introduced from the third inlet pipe, enters the shell and then flows upward into the cylinder. It can pass through the notch on the perforation. There will be a liquid layer of a certain thickness on the baffles. The gas and the liquid on the baffle surface are in full contact to achieve step-by-step mass transfer, thereby ensuring efficient separation. This solves the problem of poor heat transfer effect leading to unsatisfactory separation effect in the existing technology.

[0005] Furthermore, the baffle has a sidewall that is separate from the inner wall of the cylinder, and an upwardly extending baffle is fixedly connected to the sidewall, with both ends of the baffle fixed to the inner wall of the cylinder.

[0006] Furthermore, the upper surface of the baffle is recessed and has multiple overflow ports.

[0007] Furthermore, the heat exchange tube has a U-shaped structure.

[0008] Furthermore, the baffles are arranged at equal intervals and alternately staggered within the cylinder.

[0009] Furthermore, the baffle plate has an even number of perforations.

[0010] Furthermore, the notches are arc-shaped and equidistantly arranged around the perimeter.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By setting perforations and gaps on the baffle plate, the gas can fully contact the liquid on the baffle plate surface to achieve stepwise mass transfer, thereby ensuring efficient separation and solving the problem of poor heat transfer effect leading to unsatisfactory separation effect in the prior art. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0014] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0015] Figure 3 This is a partial enlarged structural schematic diagram of an embodiment of the present utility model;

[0016] In the above attached figures:

[0017] 1. Cylinder body; 2. Upper end cap; 3. Shell; 4. Outlet pipe; 5. Drain pipe; 6. Baffle plate; 7. Perforation; 8. Notch; 9. Tube sheet; 10. Heat exchange tube; 11. First inlet pipe; 12. First outlet pipe; 13. Third inlet pipe; 14. Baffle; 15. Overflow port; 16. Second inlet pipe. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-3As shown, this embodiment provides a high-efficiency tower heat exchanger, which, similar to the prior art, includes a vertically arranged cylinder 1, an upper head 2 fixed above the cylinder 1, and a shell 3 fixed below the cylinder 1. An outlet pipe 4 is provided on the top of the upper head 2, and a drain pipe 5 is provided at the bottom of the shell 3. Multiple baffles 6 are arranged equidistantly from top to bottom inside the cylinder 1. Unlike the prior art, the baffles 6 are provided with perforations 7, and multiple equidistant notches 8 are recessed on the inner wall of the perforations 7. A tube sheet 9 is fixedly installed inside the upper head 2, and the tube sheet 9 is provided with through holes to allow gas to pass through into the upper head 2. The tube sheet 9 is also connected to a U-shaped heat exchange tube 10. A first inlet pipe 11 and a first outlet pipe, respectively connected to both ends of the heat exchange tube 10, are also fixedly connected to the upper head 2. 12. This allows the heat exchange medium to be introduced into the heat exchange tube 10. Furthermore, the perforations 7 on the baffle plate 6 are in even numbers, with two perforations for each heat exchange tube 10 to pass through. The heat exchange tube 10 also provides a certain mechanical support for the baffle plate 6. At the same time, the notches 8 are set around the outside of the heat exchange tube 10. Furthermore, a second inlet pipe 16 for introducing liquid is fixedly connected to the upper end of the cylinder 1, and a third inlet pipe 13 for introducing gas is fixedly connected to the shell 3. In this way, after the gas enters the shell 3, it rises upward and the liquid descends. When inside the cylinder 1, there will be a liquid layer of a certain thickness on the baffle plate 6. The gas can pass through the notches 8 and fully contact the liquid on the surface of the baffle plate 6 to achieve step-by-step mass transfer, thereby ensuring efficient separation and solving the problem of poor heat transfer effect leading to unsatisfactory separation effect in the prior art.

[0020] like Figure 2 , 3 As shown, the heat exchange tube 10 passes through the perforation 7, and the notch 8 surrounds the heat exchange tube 10. The heat exchange tube 10 can be continuously heated, thereby further promoting the improvement of mass transfer efficiency. Furthermore, the notch 8 can be arc-shaped, so that the gas can contact the liquid along a longer edge.

[0021] like Figure 1-3 As shown, the baffle 6 has a side wall that is separate from the inner wall of the cylinder 1, and an upwardly extending baffle 14 is fixedly connected to the side wall. The two ends of the baffle 14 are fixed to the inner wall of the cylinder 1 respectively. The baffle 14 can keep the liquid on the baffle 6 at a certain thickness. Furthermore, the upper end face of the baffle 14 is recessed and provided with multiple overflow ports 15. The overflow ports 15 can allow the liquid to overflow outward and downward.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-efficiency tower heat exchanger, characterized in that, The device includes a vertically arranged cylindrical body, an upper end cap fixed to the upper end of the cylindrical body, and a shell fixed to the lower end of the cylindrical body. A tube sheet is fixedly installed inside the upper end cap, and the tube sheet is also provided with through holes. Heat exchange tubes located inside the cylindrical body are fixedly connected to the tube sheet. A first inlet pipe and a first outlet pipe are provided on the upper end cap. The two ends of the heat exchange tubes are connected to the first inlet pipe and the first outlet pipe, respectively. An outlet pipe is also provided at the top of the upper end cap. A second inlet pipe is provided on the cylindrical body, and a third inlet pipe and a drain pipe located at the bottom of the shell are provided on the shell. Multiple baffles arranged sequentially from top to bottom are also fixedly connected inside the cylindrical body. The baffles are provided with perforations for the heat exchange tubes to pass through, and the inner wall of the perforations is recessed with multiple notches.

2. The high-efficiency tower heat exchanger as described in claim 1, characterized in that, The baffle has a side wall that is separate from the inner wall of the cylinder, and an upwardly extending baffle is fixedly connected to the side wall. The two ends of the baffle are fixed to the inner wall of the cylinder.

3. The high-efficiency tower heat exchanger as described in claim 2, characterized in that, The upper surface of the baffle is recessed and has multiple overflow ports.

4. The high-efficiency tower heat exchanger as described in claim 1, characterized in that, The heat exchange tubes have a U-shaped structure.

5. The high-efficiency tower heat exchanger as described in claim 1, characterized in that, The baffles are arranged at equal intervals and alternately staggered within the cylinder.

6. The high-efficiency tower heat exchanger as described in claim 4, characterized in that, The baffle plate has an even number of perforations.

7. The high-efficiency tower heat exchanger as described in any one of claims 1-6, characterized in that, The notches are arc-shaped and are arranged at equal intervals around the perimeter.

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