Anti-blocking heat exchanger suitable for high-boiling substance rectification column

Abstract

The utility model discloses a kind of anti-blocking heat exchangers suitable for high-boiling substance rectifying tower, including heat exchange shell and be located at the feed inlet and discharge port of both ends of heat exchange shell, the feed inlet and discharge port are diagonally arranged with the both ends of heat exchange shell;The feed inlet and discharge port are respectively equipped with feed medium pipe and discharge medium pipe in the heat exchange shell, several heat exchange pipes are equipped between feed medium pipe and discharge medium pipe, the heat exchange pipe is equipped with multiple groups along the length direction of feed medium pipe;Heat exchange pipe includes inner hollow tube and the heat exchange outer wall of sleeving in inner hollow tube outer, the inside wall between heat exchange outer wall and the outside wall of inner hollow tube is equipped with multiple groups of helical flow guide vane of circumferential array, fluid medium passage is formed between adjacent helical flow guide vane.The utility model has the advantages compared with prior art: provide a kind of anti-blocking heat exchanger suitable for high-boiling substance rectifying tower, prevent jamming, convenient operation and use.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to an anti-clogging heat exchanger suitable for high-boiling-point distillation columns. Background Technology

[0002] In the production processes of industries such as chemical and petrochemical, high-boiling-point distillation columns are commonly used separation equipment. Heat exchangers, as key auxiliary equipment in high-boiling-point distillation column systems, are mainly used to realize the heat exchange of high-boiling-point media in order to meet the temperature requirements of the distillation process.

[0003] In use, existing heat exchangers are prone to clogging due to their specific application requirements. To address the clogging problem of existing heat exchangers used in high-boiling-point distillation columns, developing a heat exchanger that can effectively prevent clogging, ensure stable heat exchange efficiency, and is easy to maintain has become a technical challenge that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] (I) Problems to be solved

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide an anti-clogging heat exchanger suitable for high-boiling-point distillation columns that is easy to operate and prevents clogging.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: an anti-clogging heat exchanger suitable for high-boiling-point distillation columns, comprising a heat exchange shell and an inlet and an outlet located at both ends of the heat exchange shell, wherein the inlet and outlet are diagonally arranged at both ends of the heat exchange shell.

[0008] The heat exchange shell is provided with a feed medium pipe and a discharge medium pipe, respectively, and a number of heat exchange pipes are provided between the feed medium pipe and the discharge medium pipe. The heat exchange pipes are arranged in multiple groups along the length of the feed medium pipe.

[0009] The heat exchange tube includes an inner hollow tube and a heat exchange outer wall sleeved outside the inner hollow tube. Multiple sets of circumferentially arrayed spiral guide plates are provided between the inner side wall of the heat exchange outer wall and the outer side wall of the inner hollow tube, and fluid medium channels are formed between adjacent spiral guide plates.

[0010] The upper and lower ends of the hollow inner tube are also equipped with a backflush structure in conjunction with multiple fluid medium channels.

[0011] As an improvement, the outer walls of the heat exchange shell are provided with an upper backflush pipe and a lower backflush pipe on both sides, which are respectively connected to the feed medium pipe and the discharge medium pipe.

[0012] The recoil structure includes an upper recoil assembly connected to the upper recoil pipe and a lower recoil assembly connected to the lower recoil pipe.

[0013] As an improvement, the air outlet of the upper backflushing component is located at the discharge port;

[0014] The air outlet of the lower backflushing component is located at the feed inlet.

[0015] As an improvement, an upper control valve for closing or opening the upper backflush pipe is also connected to the upper backflush pipe.

[0016] The lower backflush pipe is also connected to a lower control valve for closing or opening the lower backflush pipe.

[0017] As an improvement, the middle part of the inner hollow tube is a solid structure, with the upper end connected to the upper recoil assembly and the lower end connected to the lower recoil assembly;

[0018] The upper backflush assembly includes an upper air cavity disposed inside the inner hollow tube and a plurality of diversion backflush nozzles disposed on the outer wall of the inner hollow tube and communicating with the upper air cavity. The number of diversion backflush nozzles is the same as that of the fluid medium channels, and they correspond one-to-one. The diversion backflush nozzles are oriented downwards.

[0019] The lower recoil assembly and the upper recoil assembly have the same structure and are arranged symmetrically.

[0020] As an improvement, the outer wall of the heat exchange shell is also formed with several heat exchange fins.

[0021] (III) Beneficial Effects

[0022] The advantages of this utility model compared with the prior art are as follows: In this application, the added backflushing structure allows for targeted and periodic backflushing to clean the deposits on the inner wall of the pipe, preventing blockage. At the same time, the spiral guide plate in this application extends the flow path and contact time of the medium in the heat exchange channel, and the heat exchange fins on the outer wall of the heat exchange shell further enhance the heat exchange effect, ensuring that the heat exchanger has a high heat exchange efficiency. In addition, the spiral flow channel structure increases the impact force and reduces the retention of deposits. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a clogging-resistant heat exchanger suitable for high-boiling-point distillation columns.

[0024] Figure 2 This is a partial structural schematic diagram of a cross-section of an anti-clogging heat exchanger suitable for high-boiling-point distillation columns.

[0025] Figure 3 This is a schematic diagram of the recoil structure.

[0026] Figure 4 This is a schematic diagram of the internal hollow tube.

[0027] As shown in the figure: 1. Heat exchange shell; 2. Inlet; 3. Outlet; 4. Inlet medium pipe; 5. Outlet medium pipe; 6. Heat exchange tube; 7. Inner hollow tube; 8. Outer wall of heat exchange; 9. Spiral guide plate; 10. Fluid medium channel; 11. Upper backflush pipe; 12. Lower backflush pipe; 13. Upper control valve; 14. Lower control valve; 15. Solid structure; 16. Upper air cavity; 17. Diverting backflush nozzle; 18. Heat exchange fins. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0029] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0033] Please refer to the appendix carefully. Figure 1-4 A clog-resistant heat exchanger suitable for a high-boiling-point distillation column includes a heat exchange shell 1 and an inlet 2 and an outlet 3 located at both ends of the heat exchange shell 1, wherein the inlet 2 and the outlet 3 are diagonally arranged at both ends of the heat exchange shell 1.

[0034] The heat exchange shell 1 is equipped with a feed medium pipe 4 and a discharge medium pipe 5, respectively, with the feed inlet 2 and the discharge outlet 3. A number of heat exchange pipes 6 are arranged between the feed medium pipe 4 and the discharge medium pipe 5. The heat exchange pipes 6 are arranged in multiple sets along the length of the feed medium pipe 4. The heat exchange pipe 6 includes an inner hollow tube 7 and a heat exchange outer wall 8 sleeved outside the inner hollow tube 7. A number of circumferentially arrayed spiral guide plates 9 are arranged between the inner side wall of the heat exchange outer wall 8 and the outer side wall of the inner hollow tube 7. A fluid medium channel 10 is formed between adjacent spiral guide plates 9. The spiral fluid medium channel 10 increases the flow impact force and reduces the sedimentation phenomenon.

[0035] In one embodiment:

[0036] The upper and lower ends of the hollow inner tube 7 are also equipped with multiple fluid medium channels 10 and a backflush structure. The two sides of the outer wall of the heat exchange shell 1 are respectively connected to the feed medium pipe 4 and the discharge medium pipe 5 and are provided with an upper backflush pipe 11 and a lower backflush pipe 12. The backflush structure includes an upper backflush component connected to the upper backflush pipe 11 and a lower backflush component connected to the lower backflush pipe 12.

[0037] When in use, the air outlet of the upper backflushing component is located at the discharge port 3, and the air outlet of the lower backflushing component is located at the feed port 2, for use during shutdown maintenance backflushing.

[0038] In order to ensure the backflush operation effect during maintenance and use, an upper control valve 13 for closing or opening the upper backflush pipe 11 is also connected to the upper backflush pipe 11.

[0039] The lower backflush pipe 12 is also connected to a lower control valve 14 for closing or opening the lower backflush pipe 12. The upper backflush assembly or the lower backflush assembly can be started to perform backflush by setting different control valves.

[0040] In one embodiment:

[0041] The middle part of the hollow tube 7 is a solid structure 15, with its upper end connected to the upper recoil assembly and its lower end connected to the lower recoil assembly;

[0042] The upper backflush assembly includes an upper air cavity 16 disposed inside the inner hollow tube 7 and a plurality of diversion backflush nozzles 17 disposed on the outer wall of the inner hollow tube 7 and connected to the upper air cavity 16. The number of diversion backflush nozzles 17 is the same as that of the fluid medium channels 10, and they correspond one-to-one. The diversion backflush nozzles 17 are oriented downwards.

[0043] The lower backflush assembly has the same structure as the upper backflush assembly and is symmetrically arranged. When the heat exchange is used, a number of heat exchange fins 18 are also formed on the outer wall of the heat exchange shell 1 to increase the heat exchange effect.

[0044] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0045] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A clog-resistant heat exchanger suitable for high-boiling-point distillation columns, characterized in that: It includes a heat exchange shell (1) and an inlet (2) and an outlet (3) located at both ends of the heat exchange shell (1), wherein the inlet (2) and the outlet (3) are diagonally located at both ends of the heat exchange shell (1); The heat exchange shell (1) is provided with a feed medium pipe (4) and a discharge medium pipe (5) respectively with the feed inlet (2) and the discharge outlet (3). A plurality of heat exchange pipes (6) are provided between the feed medium pipe (4) and the discharge medium pipe (5). The heat exchange pipes (6) are provided in multiple groups along the length of the feed medium pipe (4). The heat exchange tube (6) includes an inner hollow tube (7) and a heat exchange outer wall (8) sleeved outside the inner hollow tube (7). Multiple sets of spiral guide plates (9) arranged in a circumferential array are provided between the inner side wall of the heat exchange outer wall (8) and the outer side wall of the inner hollow tube (7). A fluid medium channel (10) is formed between adjacent spiral guide plates (9). The upper and lower ends of the inner hollow tube (7) are also equipped with a backflush structure in conjunction with multiple fluid medium channels (10).

2. The anti-clogging heat exchanger for a high-boiling-point distillation column according to claim 1, characterized in that: The outer walls of the heat exchange shell (1) are connected to the feed medium pipe (4) and the discharge medium pipe (5) respectively, and are provided with an upper backflush pipe (11) and a lower backflush pipe (12). The recoil structure includes an upper recoil assembly connected to the upper recoil pipe (11) and a lower recoil assembly connected to the lower recoil pipe (12).

3. The anti-clogging heat exchanger for a high-boiling-point distillation column according to claim 2, characterized in that: The air outlet of the upper backflushing component is located at the discharge port (3); The air outlet of the lower backflushing component is located at the feed inlet (2).

4. A clog-resistant heat exchanger suitable for high-boiling-point distillation columns according to claim 2 or 3, characterized in that: The upper backflush pipe (11) is also connected to an upper control valve (13) for closing or opening the upper backflush pipe (11); The lower backflush pipe (12) is also connected to a lower control valve (14) for closing or opening the lower backflush pipe (12).

5. A clog-resistant heat exchanger for a high-boiling-point distillation column according to claim 4, characterized in that: The middle part of the inner hollow tube (7) is a solid structure (15), the upper end is connected to the upper recoil assembly, and the lower end is connected to the lower recoil assembly; The upper backflush assembly includes an upper air cavity (16) disposed in the inner hollow tube (7) and a plurality of diversion backflush nozzles (17) disposed on the outer wall of the inner hollow tube (7) and connected to the upper air cavity (16). The number of diversion backflush nozzles (17) is the same as that of the fluid medium channel (10) and they correspond one-to-one. The diversion backflush nozzles (17) are oriented downwards. The lower recoil assembly and the upper recoil assembly have the same structure and are arranged symmetrically.

6. The anti-clogging heat exchanger for a high-boiling-point distillation column according to claim 1, characterized in that: The outer wall of the heat exchange shell (1) is also formed with several heat exchange fins (18).

Images