Heat exchange purification device for acetylene production

Abstract

The utility model relates to the technical field of acetylene production equipment, and discloses a heat exchange purification device for acetylene production, which comprises a shell, an air inlet pipe and an exhaust pipe are fixedly connected in the shell, the outer wall of the air inlet pipe is fixedly connected with a cyclone separator, the outer wall of the cyclone separator is fixedly connected in the shell, and the outer wall of the cyclone separator is fixedly connected in the shell. The upper surface of the cyclone separator is fixedly connected with a wire mesh demister, a spiral heat exchange pipe set is arranged in the cyclone separator, the outer wall of the spiral heat exchange pipe set is fixedly connected with a liquid conveying pipe, and the outer wall of the liquid conveying pipe is fixedly connected to the interior of the shell and the interior of the cyclone separator. According to the acetylene gas cooling device, heavy impurities are preliminarily removed through the cyclone separator, reverse heat exchange between gas and cooling water is achieved through the spiral heat exchange pipe set, the heat exchange efficiency is remarkably improved, meanwhile, the using amount of the cooling water is reduced, the acetylene gas is rapidly cooled through the design, water resources are saved, and the acetylene gas cooling device has positive significance on environmental protection.

Description

Technical Field

[0001] This utility model relates to the technical field of acetylene production equipment, and in particular to a heat exchange purification device for acetylene production. Background Technology

[0002] In the acetylene production process, crude acetylene gas usually contains a variety of impurities, including solid particles, liquid impurities, and acidic gas components. These impurities not only affect the purity of acetylene and reduce its performance in subsequent applications, but may also corrode production equipment, shorten equipment lifespan, and increase production costs and safety risks.

[0003] A search revealed Chinese Patent Publication No. CN221491982U, which discloses an acetylene purification device. This device includes a heat exchanger for heat exchange of acetylene, an activated carbon column with activated carbon adsorbent, and a pressure swing adsorption (PSA) device. The heat exchanger, activated carbon column, and PSA device are connected in series via pipelines. Acetylene passes through the heat exchanger and activated carbon column before entering the PSA device. The PSA device includes multiple adsorption towers filled with molecular sieves, connected in series. A pressure swing device is located on the side of each adsorption tower, and its output is connected to the adsorption tower via pipelines. This invention's adsorption towers and PSA device can continuously and efficiently extract high-purity acetylene.

[0004] Although the above application involves heat exchange and other processes in the acetylene purification process, there are still some shortcomings in practical applications. The device cannot effectively remove heavy impurity particles in the acetylene gas before the heat exchange device, which will lead to the blockage and wear of the impurities on the subsequent equipment, thereby reducing the heat exchange efficiency. At the same time, it also increases the amount of cooling water used, wasting water resources. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a heat exchange purification device for acetylene production, which aims to improve the problem that previous acetylene purification devices could not effectively remove heavy impurity particles from acetylene gas before heat exchange, which easily led to equipment blockage and wear, reduced heat exchange efficiency, and increased cooling water consumption, resulting in water waste.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A heat exchange purification device for acetylene production includes a shell. An inlet pipe and an outlet pipe are fixedly connected inside the shell. A cyclone separator is fixedly connected to the outer wall of the inlet pipe. The outer wall of the cyclone separator is fixedly connected to the inside of the shell. A wire mesh demister is fixedly connected to the upper surface of the cyclone separator. A spiral heat exchange tube assembly is arranged inside the cyclone separator. A liquid delivery pipe is fixedly connected to the outer wall of the spiral heat exchange tube assembly. The outer wall of the liquid delivery pipe is fixedly connected to the inside of the shell and the cyclone separator. A liquid collection chamber is fixedly connected to the outer wall of the shell. A drain valve is fixedly connected to the outer wall of the liquid collection chamber. A water supply assembly is provided on the outer wall of the shell.

[0008] The above technical solution involves using a cyclone separator to initially remove heavy impurities, and then using a spiral heat exchanger tube assembly to achieve reverse heat exchange between the gas and cooling water, which significantly improves heat exchange efficiency and reduces the amount of cooling water used. This design not only allows acetylene gas to cool down rapidly, but also saves water resources, reduces production costs, and improves the recycling rate of water resources, which is of positive significance for environmental protection.

[0009] As a further description of the above technical solution:

[0010] The water supply assembly includes a water tank, the outer wall of which is fixedly connected to the outer wall of the shell, and a first water pump is fixedly connected inside the water tank. The output end of the first water pump is fixedly connected to the outer wall of the infusion pipe.

[0011] The above technical solution involves a first water pump that delivers cooling water from the water tank to the spiral heat exchanger tube assembly via a delivery pipe. The first water pump provides power for the heat exchange process, ensuring that cooling water can continuously and stably enter the heat exchange system to cool the acetylene gas. The water tank serves to store the cooling water.

[0012] As a further description of the above technical solution:

[0013] A motor is fixedly connected inside the housing, and a disc is fixedly installed at the output end of the motor.

[0014] The above technical solution uses a motor to drive the disc to rotate within the housing, while the housing supports and limits the disc.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the disk is rotatably connected to the inside of the housing, and a connecting shaft is fixedly connected to the outer wall of the disk.

[0017] Through the above technical solution: the shell can ensure the stability of the disk during rotation, and the disk plays the role of supporting and fixing the connecting shaft, thus ensuring the stability of the connecting shaft.

[0018] As a further description of the above technical solution:

[0019] A connecting plate is slidably connected to the outer wall of the connecting shaft, and a limit plate is slidably connected to the outer wall of the connecting plate.

[0020] The above technical solution involves a limiting plate that restricts the movement of the connecting plate, ensuring that it reciprocates within a predetermined range, thereby guaranteeing the stability of the connecting plate during the sliding process.

[0021] As a further description of the above technical solution:

[0022] The nozzle frame is fixedly connected to the lower surface of the connecting plate, and the outer wall of the limiting plate is fixedly connected to the inside of the housing.

[0023] Through the above technical solution: the connecting plate serves to support and fix the nozzle frame, and the housing serves to support and fix the limiting plate.

[0024] As a further description of the above technical solution:

[0025] A liquid storage tank is fixedly connected to the upper surface of the shell, and a second water pump is fixedly connected inside the liquid storage tank. A water pipe is fixedly connected to the output end of the second water pump.

[0026] The above technical solution involves using a second water pump to transport the NaOH solution from the storage tank to the nozzle frame via a water pipe. The nozzle frame is equipped with multiple atomizing nozzles, and the storage tank stores the NaOH solution to provide sufficient chemical reagents for the neutralization reaction.

[0027] As a further description of the above technical solution:

[0028] The outer wall of the water pipe is slidably connected to the inside of the housing, and the outer wall of the water pipe is fixedly connected to the outer wall of the nozzle frame.

[0029] Through the above technical solution, the water pipe serves to transport the NaOH solution, while the shell serves to limit the water pipe and prevent it from getting stuck.

[0030] This utility model has the following beneficial effects:

[0031] 1. In this utility model, the device initially removes heavy impurities through a cyclone separator, and then uses a spiral heat exchange tube assembly to achieve reverse heat exchange between the gas and cooling water, which significantly improves the heat exchange efficiency and reduces the amount of cooling water used. This design not only allows acetylene gas to cool down quickly, but also saves water resources, reduces production costs, and improves the recycling rate of water resources, which is of positive significance for environmental protection.

[0032] 2. In this utility model, the device adopts a reciprocating nozzle frame, which allows the NaOH solution to fully contact the acidic impurities in the acetylene gas, efficiently neutralizes the acidic impurities, ensures the purity of acetylene, and at the same time, the neutralization process reduces the corrosion of the equipment by the acidic gas, extends the equipment life, reduces the risk of leakage, improves production safety, reduces the difficulty of subsequent processing, and improves the operating efficiency of the production system. Attached Figure Description

[0033] Figure 1 This is a perspective view of a heat exchange and purification device for acetylene production according to the present invention.

[0034] Figure 2 This is a partial structural diagram of a cyclone separator in a heat exchange and purification device for acetylene production proposed in this utility model.

[0035] Figure 3 This is a partial structural diagram of a spiral heat exchanger tube assembly for a heat exchange purification device for acetylene production proposed in this utility model.

[0036] Figure 4 This is a partial structural diagram of the nozzle frame of a heat exchange purification device for acetylene production proposed in this utility model.

[0037] Legend:

[0038] 1. Shell; 2. Inlet pipe; 3. Exhaust pipe; 4. Cyclone separator; 5. Wire mesh demister; 6. Spiral heat exchanger tube assembly; 7. Liquid delivery pipe; 8. Water supply assembly; 801. Water tank; 802. First water pump; 9. Liquid collection chamber; 10. Drain valve; 11. Motor; 12. Disc; 13. Connecting shaft; 14. Connecting plate; 15. Nozzle holder; 16. Limiting plate; 17. Liquid storage tank; 18. Second water pump; 19. Water pipe. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Reference Figure 1 , Figure 2 and Figure 3An embodiment of this utility model provides a heat exchange purification device for acetylene production, comprising a shell 1, an inlet pipe 2 and an exhaust pipe 3 fixedly connected inside the shell 1, a cyclone separator 4 fixedly connected to the outer wall of the inlet pipe 2, the outer wall of the cyclone separator 4 fixedly connected to the inside of the shell 1, a wire mesh demister 5 fixedly connected to the upper surface of the cyclone separator 4, a spiral heat exchange tube assembly 6 arranged inside the cyclone separator 4, a liquid delivery pipe 7 fixedly connected to the outer wall of the spiral heat exchange tube assembly 6, the outer wall of the liquid delivery pipe 7 fixedly connected to the inside of the shell 1 and the cyclone separator 4, a liquid collection chamber 9 fixedly connected to the outer wall of the shell 1, a drain valve 10 fixedly connected to the outer wall of the liquid collection chamber 9, and a water supply assembly 8 arranged on the outer wall of the shell 1.

[0041] Specifically, high-temperature crude acetylene gas is first introduced tangentially into the cyclone separator 4 through the inlet pipe 2. The inlet pipe 2 serves as the channel for the high-temperature crude acetylene gas to enter the device, introducing the acetylene gas to be processed into the cyclone separator 4. The cyclone separator 4 uses centrifugal force to separate heavy impurity particles from the high-temperature crude acetylene gas. The gas enters the cyclone separator 4 tangentially, and under the action of centrifugal force, the heavy impurity particles are thrown against the separator wall and finally fall into the collection chamber 9. The cyclone separator 4 plays a role in the preliminary purification of the acetylene gas, removing solid impurity particles and preventing impurities from entering subsequent heat exchange and neutralization stages. This reduces wear and blockage risks to the equipment and improves the overall operating efficiency and service life of the device. The collection chamber 9 serves to centrally store impurities, facilitating subsequent cleaning and discharge, and preventing impurities from accumulating inside the device and affecting normal operation. When the preliminarily purified gas passes upward through the spiral heat exchange tube group 6, it exchanges heat with the counter-flowing cooling water inside the tubes, reducing heat loss. After being cooled, the gas passes through the wire mesh demister 5 to intercept the mist droplets and is discharged from the exhaust pipe 3. The deposited liquid impurities are discharged through the timed drain valve 10. The spiral heat exchange tube group 6 improves the heat exchange efficiency through countercurrent heat exchange, enabling the acetylene gas to cool down quickly to the temperature range required by subsequent processes. At the same time, it reduces the amount of cooling water used and lowers production costs. The wire mesh demister 5 intercepts the mist droplets carried in the cooled gas, preventing the droplets from entering subsequent stages. It can further purify the acetylene gas, remove liquid impurities, ensure the purity of the discharged gas, and avoid the droplets affecting subsequent equipment or processes.

[0042] Reference Figure 1 , Figure 2 and Figure 3 The water supply assembly 8 includes a water tank 801, the outer wall of which is fixedly connected to the outer wall of the housing 1, and a first water pump 802 is fixedly connected inside the water tank 801. The output end of the first water pump 802 is fixedly connected to the outer wall of the infusion pipe 7.

[0043] Specifically, the first water pump 802 is used to transport the cooling water in the water tank 801 to the spiral heat exchange tube group 6 through the liquid delivery pipe 7. The first water pump 802 provides power for the heat exchange process, ensuring that the cooling water can continuously and stably enter the heat exchange system to cool the acetylene gas. The water tank 801 is used to store the cooling water.

[0044] Reference Figure 1 , Figure 2 and Figure 4 A motor 11 is fixedly connected inside the housing 1, and a disc 12 is fixedly installed at the output end of the motor 11. The outer wall of the disc 12 is rotatably connected to the inside of the housing 1, and a connecting shaft 13 is fixedly connected to the outer wall of the disc 12. A connecting plate 14 is slidably connected to the outer wall of the connecting shaft 13, and a limit plate 16 is slidably connected to the outer wall of the connecting plate 14. A nozzle frame 15 is fixedly connected to the lower surface of the connecting plate 14, and the outer wall of the limit plate 16 is fixedly connected to the inside of the housing 1.

[0045] Specifically, the motor 11 drives the disc 12 to rotate within the housing 1, where the housing 1 supports and limits the disc 12, ensuring its stability during rotation. The disc 12 pulls the connecting plate 14 through the connecting shaft 13, which slides within the limiting plate 16. The connecting shaft 13 transmits the rotational motion of the disc 12 to the connecting plate 14, ensuring that the nozzle holder 15 can reciprocate along a predetermined trajectory, enhancing the uniformity of the atomized solution distribution. The limiting plate 16 limits the movement of the connecting plate 14 and the nozzle holder 15, ensuring their reciprocating motion within a predetermined range, thus guaranteeing the stability of the connecting plate 14 during sliding. The connecting plate 14 drives the nozzle holder 15 to reciprocate, thereby neutralizing acidic impurities through the atomization of NaOH solution.

[0046] Reference Figure 2 and Figure 4 A liquid storage tank 17 is fixedly connected to the upper surface of the housing 1. A second water pump 18 is fixedly connected inside the liquid storage tank 17. A water pipe 19 is fixedly connected to the output end of the second water pump 18. The outer wall of the water pipe 19 is slidably connected to the inside of the housing 1. The outer wall of the water pipe 19 is fixedly connected to the outer wall of the nozzle frame 15.

[0047] Specifically, the second water pump 18 is used to transport the NaOH solution in the storage tank 17 to the nozzle holder 15 through the water pipe 19. The nozzle holder 15 is equipped with multiple atomizing nozzles. The storage tank 17 stores the NaOH solution, providing sufficient chemical reagents for the neutralization reaction, ensuring an adequate supply of NaOH solution to meet the treatment requirements of acidic impurities during the neutralization process. It also facilitates the replenishment or replacement of the solution to maintain the neutralization effect. The second water pump 18 provides power for the neutralization reaction, ensuring that the NaOH solution can be continuously and stably delivered to the nozzle holder 15, guaranteeing the smooth progress of the neutralization reaction.

[0048] Working principle: When the device is needed, high-temperature crude acetylene gas is first tangentially introduced into the cyclone separator 4 from the inlet pipe 2. Under the action of centrifugal force, heavy impurity particles are thrown against the wall of the separator and fall into the liquid collection chamber 9. The first water pump 802 transports the cooling water in the water tank 801 to the spiral heat exchange tube group 6 through the liquid delivery pipe 7. When the preliminarily purified gas passes upward through the spiral heat exchange tube group 6, it completes heat exchange with the cooling water flowing in the opposite direction in the tube. After cooling, the gas passes through the wire mesh demister 5 to intercept the mist droplets and is discharged from the exhaust pipe 3. The deposited liquid impurities are discharged through the drain valve 10 that is opened at a time.

[0049] The second water pump 18 delivers the NaOH solution in the storage tank 17 to the nozzle frame 15 through the water pipe 19. At the same time, the motor 11 drives the disc 12 to rotate in the housing 1. The disc 12 pulls the connecting plate 14 to slide in the limiting plate 16 through the connecting shaft 13. The connecting plate 14 drives the nozzle frame 15 to reciprocate, thereby neutralizing acidic impurities by atomizing the NaOH solution.

[0050] This device not only improves heat exchange efficiency while reducing cooling water consumption, thus enhancing heat exchange efficiency and enabling acetylene gas to cool down more quickly and effectively, but also allows cooling water to complete efficient heat exchange tasks with limited usage, reducing dependence on cooling water and lowering its consumption, thereby saving water resources and reducing production costs. Furthermore, it achieves efficient neutralization of acidic impurities, significantly improving the efficiency of the neutralization reaction and ensuring the more thorough removal of acidic impurities, thus guaranteeing the purity of acetylene gas.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat exchange purification device for acetylene production, comprising a shell (1), characterized in that: An air inlet pipe (2) and an exhaust pipe (3) are fixedly connected inside the shell (1). A cyclone separator (4) is fixedly connected to the outer wall of the air inlet pipe (2). The outer wall of the cyclone separator (4) is fixedly connected to the inside of the shell (1). A wire mesh demister (5) is fixedly connected to the upper surface of the cyclone separator (4). A spiral heat exchange tube assembly (6) is provided inside the cyclone separator (4). A liquid delivery pipe (7) is fixedly connected to the outer wall of the spiral heat exchange tube assembly (6). The outer wall of the liquid delivery pipe (7) is fixedly connected to the inside of the shell (1) and the cyclone separator (4). A liquid collection chamber (9) is fixedly connected to the outer wall of the shell (1). A drain valve (10) is fixedly connected to the outer wall of the liquid collection chamber (9). A water supply assembly (8) is provided on the outer wall of the shell (1).

2. The heat exchange purification device for acetylene production according to claim 1, characterized in that: The water supply assembly (8) includes a water tank (801), the outer wall of which is fixedly connected to the outer wall of the shell (1), and a first water pump (802) is fixedly connected inside the water tank (801). The output end of the first water pump (802) is fixedly connected to the outer wall of the infusion pipe (7).

3. The heat exchange purification device for acetylene production according to claim 1, characterized in that: A motor (11) is fixedly connected inside the housing (1), and a disc (12) is fixedly installed at the output end of the motor (11).

4. The heat exchange purification device for acetylene production according to claim 3, characterized in that: The outer wall of the disk (12) is rotatably connected to the inside of the housing (1), and the outer wall of the disk (12) is fixedly connected to a connecting shaft (13).

5. The heat exchange purification device for acetylene production according to claim 4, characterized in that: The outer wall of the connecting shaft (13) is slidably connected to a connecting plate (14), and the outer wall of the connecting plate (14) is slidably connected to a limiting plate (16).

6. The heat exchange purification device for acetylene production according to claim 5, characterized in that: The nozzle frame (15) is fixedly connected to the lower surface of the connecting plate (14), and the outer wall of the limiting plate (16) is fixedly connected to the inside of the housing (1).

7. The heat exchange purification device for acetylene production according to claim 6, characterized in that: A liquid storage tank (17) is fixedly connected to the upper surface of the housing (1), and a second water pump (18) is fixedly connected inside the liquid storage tank (17). A water pipe (19) is fixedly connected to the output end of the second water pump (18).

8. The heat exchange purification device for acetylene production according to claim 7, characterized in that: The outer wall of the water pipe (19) is slidably connected to the inside of the housing (1), and the outer wall of the water pipe (19) is fixedly connected to the outer wall of the nozzle frame (15).

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