Acetylene gas washing device

Abstract

The utility model provides an acetylene gas washing device which comprises an acetylene gas conveying pipeline connected with a gas outlet of a generator, and the acetylene gas conveying pipeline is sequentially provided with a gas washing tower used for preliminarily removing impurities, a water washing tower used for removing impurities again and a cooling tower used for cooling in the conveying direction of acetylene gas. The water washing tower is provided with a plurality of water inlet pipes which radially enter from the side face and are arranged at intervals from top to bottom, nozzles are arranged at pipe openings, located in the water washing tower, of the water inlet pipes, and the ends, away from the nozzles, of the water inlet pipes are connected with the cooling tower. Aiming at the problems existing in the prior art, the acetylene gas washing device disclosed by the utility model can be used for effectively removing impurities in acetylene gas and ensuring the quality of the acetylene gas.

Description

A scrubbing device for acetylene gas Technical Field

[0001] This application belongs to the field of acetylene preparation, specifically relating to a washing device for acetylene gas. Background Technology

[0002] Acetylene, as a basic chemical raw material, is widely used in welding, cutting metals, and synthesizing other organic compounds, such as polyvinyl chloride (PVC), chloroprene rubber, acetic acid, vinyl acetate ethanol, and their derivatives. Acetylene production processes can be broadly classified into the calcium carbide method and the hydrocarbon cracking method, depending on the raw materials used. The calcium carbide method, as a more traditional acetylene production technology both domestically and internationally, has advantages such as producing acetylene with fewer impurities, simpler equipment, relatively safer operation, and stable performance. my country began using the calcium carbide method to produce acetylene in the 1970s, and currently, this method accounts for over 90% of my country's total acetylene production. The calcium carbide process for acetylene production involves the reaction of calcium carbide (CaC2) with water to produce acetylene (C2H2) and calcium hydroxide (Ca(OH)2). Inside the acetylene generator, calcium carbide undergoes a vigorous chemical reaction with water to generate acetylene gas. When the acetylene gas exits the generator, it carries calcium carbide slag slurry. This slurry contains unreacted calcium carbide particles, calcium hydroxide, and other impurities. If these impurities are carried downstream with the acetylene gas, they will affect the purity and quality of the acetylene gas, thus impacting the quality of subsequent products. Solid particles and viscous substances in the calcium carbide slag slurry easily deposit in pipes and equipment, causing blockages, reducing production efficiency, and increasing maintenance costs. Therefore, it is necessary to wash the acetylene gas to remove the calcium carbide slag slurry entrained within it.

[0003] In the existing technology, acetylene is directly fed into a washing tower after being output from the generator. Washing water is used in the washing tower to remove impurities. The washing tower is equipped with multiple ring-shaped water inlet pipes or vertical water inlet pipes. This method is difficult to effectively remove impurities and reduces the quality of acetylene.

[0004] The shape, layout, and connection method of the annular water inlet pipe are as follows: The annular water inlet pipe is positioned around a specific location on the outside of the scrubbing tower and is coaxially arranged with the cylinder of the scrubbing tower, so that the water can be evenly distributed in the circumferential direction. The water inlet pipe entering the scrubbing tower is arranged radially along the tower body and connected to the annular water inlet pipe. Each layer of the annular water inlet pipe has a separate water inlet and is equipped with a water inlet valve. The water enters the scrubbing tower through the annular water inlet pipe. A nozzle is installed at the end of the water inlet pipe entering the scrubbing tower. 6-7 nozzles are evenly arranged along the circumference of the scrubbing tower at the same height, so that the water can enter the scrubbing tower evenly and come into countercurrent contact with the rising gas in the tower. This method results in a large number of nozzles, small nozzle size, and low water pressure, which easily causes the nozzles to scale and become clogged, increasing the workload during maintenance.

[0005] The shape, layout, and connection method of the vertical water inlet pipe are as follows: Water is pressurized from the water pump outlet and sent to the top of the washing tower. An outlet is set every meter at the end of the vertical pipe, and three outlets can be set. Each outlet is connected to a horizontal water inlet pipe. According to the water volume requirements, the diameter of the horizontal water inlet pipe reaches φ120mm. The φ120mm horizontal water inlet pipe is inserted radially into the washing tower. 8-12 nozzles are evenly installed on the horizontal water inlet pipe section inside the tower. The nozzles face upward or downward and are arranged in a crisscross pattern. This type of nozzle is small, easy to clog, and numerous. During maintenance, the nozzles cannot be directly removed from the flange holes. Scaffolding needs to be erected inside the tower, and the nozzles need to be removed from the inside through the manhole. Alternatively, it is very difficult to remove them, and the nozzles can only be replaced inside the tower. The pipes are thick and heavy, and the installation is laborious. Summary of the Invention

[0006] To address the problems existing in the prior art, this utility model provides an acetylene gas washing device that effectively removes impurities from acetylene gas and ensures the quality of acetylene gas.

[0007] The technical solution adopted in this utility model is as follows:

[0008] An acetylene gas scrubbing device includes an acetylene gas delivery pipeline connected to the outlet of a generator. Along the acetylene gas delivery direction, a gas scrubbing tower for preliminary impurity removal, a water scrubbing tower for further impurity removal, and a cooling tower for cooling are sequentially arranged. The water scrubbing tower is provided with multiple water inlet pipes that enter radially from the side and are spaced apart from top to bottom. The inlet of the water inlet pipe is equipped with a nozzle at the pipe opening inside the water scrubbing tower. The end of the water inlet pipe away from the nozzle is connected to the cooling tower.

[0009] Furthermore, each inlet pipe is connected to a nozzle, which is a vortex nozzle. Each nozzle includes a volute, inside which a swirling cavity is formed. The swirling cavity is a thin-walled body formed by rotating a semi-circular arc around an axis. A connecting pipe connected to the inlet pipe is provided on one side wall of the volute. The connecting pipe and the inlet pipe can be connected by thread or welding, for example. An outlet pipe communicating with the swirling cavity is provided on one side of the volute. The axis of the outlet pipe is coaxial with the axis of the volute. The axis of the connecting pipe is spatially perpendicular to the axis of the outlet pipe, and the axis of the connecting pipe is eccentrically positioned relative to the axis of the volute. The connecting pipe contains... The inlet is tangent to the side wall of the vortex chamber. The outlet pipe has an outlet perpendicularly connected to the vortex chamber. The inner wall of the outlet, furthest from the vortex chamber, forms a conical surface. The angle of the inner wall of the conical surface can be, for example, 60-150 degrees. This ensures uniform distribution of the washing water, increases the atomization area, improves the atomization effect, increases the contact area between the washing water and the gas, prolongs the gas-liquid contact path and time, promotes the dissolution of soluble substances or pollutants in the gas, improves the absorption, dissolution, or reaction efficiency of the water washing tower for harmful substances in the gas, enhances the washing effect, and ensures that impurities in the gas are more thoroughly washed and removed. In practical applications, the connecting pipe delivers the washing water into the vortex chamber. The washing water, constrained by the inner wall of the vortex chamber, rotates along the inner wall to form a vortex and is sprayed out from the outlet. The constrained shape of the sprayed washing water by the inner wall of the outlet makes it a hollow cone, ensuring complete coverage of the cross-section of the washing tower. Using vortex-type nozzles ensures sufficient water intake while extending nozzle lifespan and reducing clogging. Each inlet pipe connects to one nozzle, reducing the number of nozzles and space required. This achieves efficient water supply and distribution within the limited space of the water washing tower, making the tower structure more compact.

[0010] Furthermore, the water inlet pipes are arranged in the upper middle part of the washing tower. There can be, for example, 5-10 inlet pipes, preferably 6-8. The distance between adjacent inlet pipes can be, for example, 450-550mm. Each inlet pipe is equipped with a control valve to achieve individual control of the inlet pipe, facilitating the adjustment of the water flow in each pipe, which is beneficial for production and water conservation. The inlet pipes can be, for example, steel pipes with a diameter of 50-100mm. Multiple inlet pipes enter the washing tower radially from the side, providing a stable water flow, reducing water flow fluctuations and turbulence. The consistent flow rate and velocity of the water flowing out from each inlet pipe help maintain stable washing conditions within the washing tower, improving the stability and reliability of the washing effect.

[0011] Furthermore, a flange is provided on the outer wall of each water inlet pipe. The flange is coaxial with the water inlet pipe, and the water inlet pipe extends from one side of the flange to the other side. The inner ring of the flange is seamlessly welded to the outer wall of the water inlet pipe, for example.

[0012] Furthermore, the tower wall of the water washing tower has openings that connect to flanges. The number of openings is the same as the number of water inlet pipes, with each opening corresponding to one water inlet pipe. Each flange is connected to the flange of one water inlet pipe. The water inlet pipe passes through the flange and extends into the interior of the water washing tower. The inner diameter of the flange is larger than the maximum height of the nozzle, allowing the water inlet pipe and nozzle to be easily removed from the inner hole of the flange. When the nozzle needs to be inspected, the connection between the flange and the flange (which is bolted together) is disconnected, and the water inlet pipe and nozzle are directly pulled out along the radial direction of the water washing tower.

[0013] Furthermore, multiple inlet pipes converge into a main inlet pipe and are connected to the bottom of the cooling tower. A first water pump is installed on the main inlet pipe to transport the cooling water from the cooling tower to the water washing tower.

[0014] Furthermore, the upper part of the cooling tower is equipped with a primary water inlet, which is connected to a primary water input pipe. A second water pump is installed on the primary water input pipe. The primary water is the production water used for the first time. The cooling tower is a packed tower. The primary water enters the cooling tower through the primary water input pipe, cooling the acetylene input into the cooling tower. Cooling water is collected at the bottom of the cooling tower. This cooling water is pressurized by the first water pump and sent to the water washing tower. It is then evenly sprayed out through nozzles, making full contact with the rising gas to complete the washing of the gas before returning to the bottom of the water washing tower.

[0015] Furthermore, the acetylene gas delivery pipeline from the generator is connected to the lower part of the gas scrubbing tower, and the acetylene gas delivery pipeline exits from the top of the gas scrubbing tower and connects to the lower part of the water scrubbing tower. The acetylene gas delivery pipeline at the top of the water scrubbing tower is connected to the lower part of the cooling tower. The acetylene gas output from the generator enters the gas scrubbing tower through the bottom and comes into countercurrent contact with the clear liquid water sprayed down from the top of the gas scrubbing tower, which initially reduces the temperature while washing away most of the mist entrained in the gas.

[0016] Furthermore, the acetylene gas delivery pipeline enters the water washing tower tangentially, causing the gas to form a rotating airflow after entering the water washing tower. This increases the residence time and path of the gas in the water washing tower, enhances the contact and mixing between gas and liquid, improves mass and heat transfer, and helps to fully remove impurities from the gas.

[0017] Furthermore, the bottom of the washing tower is equipped with a washing water output pipe, which is connected to the generator. The washing water output pipe is equipped with a third water pump, which is used to transport the washing water at the bottom of the washing tower to the generator to react with calcium carbide.

[0018] Furthermore, the washing tower is equipped with a level gauge for monitoring the washing water level. The level gauge is interlocked with the third water pump. The third water pump adjusts its frequency according to the height of the washing liquid at the bottom of the washing tower to ensure that the liquid level in the washing tower is maintained at a suitable height and to ensure the stable operation of the washing tower.

[0019] Furthermore, the acetylene gas delivery pipeline between the gas scrubbing tower and the water scrubbing tower is equipped with a positive water seal to prevent acetylene backflow.

[0020] Furthermore, the acetylene output pipe at the top of the cooling tower is connected to the compressor, and the compressor's compressed gas output pipe is connected to the downstream device.

[0021] Furthermore, the calcium carbide slag slurry output pipe at the bottom of the generator is connected to the calcium carbide slag slurry storage tank. The calcium carbide slag slurry storage tank is equipped with a clear liquid water output pipe. The other end of the clear liquid water output pipe is connected to the upper part of the gas scrubbing tower. A fourth water pump is installed on the clear liquid water output pipe. The calcium carbide slag slurry in the generator is transported to the calcium carbide slag slurry storage tank for storage. After the calcium carbide slag slurry is clarified and cooled to below 35°C in the storage tank, it is transported to the gas scrubbing tower through the clear liquid water output pipe. It is sprayed down from the upper part of the gas scrubbing tower and comes into countercurrent contact with the acetylene gas to wash away most of the mist entrained in the gas.

[0022] Furthermore, the bottom of the gas scrubbing tower is equipped with a spray water outlet, which is connected to a spray water output pipe. The spray water output pipe is connected to a spray water inlet at the top of the generator. The spray water in the gas scrubbing tower is transported to the generator through the spray water output pipe to participate in the calcium carbide reaction.

[0023] The beneficial effects of this utility model are:

[0024] This invention relates to an acetylene gas washing device. It employs an intake tower to initially cool the acetylene gas while simultaneously washing away most of the entrained mist. A water washing tower further removes the mist. Multiple water inlet pipes, radially entering from the side of the water washing tower and spaced apart from top to bottom, provide a stable water flow, reducing fluctuations and turbulence, maintaining stable washing conditions within the tower, and improving the stability and reliability of the washing effect. Furthermore, by installing nozzles at the inlet pipe openings, the device reduces the number of nozzles compared to existing technologies, saving space within the water washing tower and achieving efficient water supply and distribution within the limited space. The head is designed as a vortex type, increasing the atomization area and improving the atomization effect. This increases the contact area between the washing water and the gas, prolongs the gas-liquid contact path and time, promotes the dissolution of soluble substances or pollutants in the acetylene gas, improves the absorption, dissolution, or reaction efficiency of the water washing tower for harmful substances in the gas, enhances the water washing effect, and ensures that impurities in the acetylene gas are washed and removed more thoroughly. The water inlet pipe is detachably connected via flanges and flange plates, and the inner diameter of the flanges is larger than the maximum height of the nozzle, allowing the water inlet pipe and nozzle to be easily removed from the inner hole of the flanges. This facilitates nozzle maintenance, significantly improves the system's production efficiency, and accelerates the maintenance process of the washing device. Attached Figure Description

[0025] Figure 1 is a schematic diagram of an acetylene gas scrubbing device according to the present invention.

[0026] Figure 2 is a schematic diagram of the nozzle structure.

[0027] Figure 3 is a lateral sectional perspective view of the nozzle.

[0028] Figure 4 is a longitudinal sectional perspective view of the nozzle.

[0029] Figure 5 is a front view of the connection between the water inlet pipe and the water washing tower.

[0030] Figure 6 is a top view of the connection between the water inlet pipe and the water washing tower.

[0031] Figure 7 is an internal schematic diagram of the connection between the water inlet pipe and the water washing tower.

[0032] Figure label:

[0033] 1-Generator, 2-Acetylene gas delivery pipeline, 3-Gas scrubbing tower, 4-Water scrubbing tower, 5-Cooling tower, 6-Water inlet pipe, 7-Sprayer head, 701-Vortex casing, 702-Swirl chamber, 703-Connecting pipe, 704-Water outlet pipe, 705-Water inlet hole, 706-Water outlet hole, 707-Conical surface, 8-Control valve, 9-Main water inlet pipe, 11-First water pump, 12-Primary water input pipeline, 13-Second water pump, 14-Washing water output pipeline, 15-Third water pump, 16-Positive water seal, 17-Acetylene output pipeline, 18-Compressor, 19-Flange, 20-Flange fitting, 21-Calcium carbide slag slurry output pipeline, 22-Calcium carbide slag slurry storage tank, 23-Clear liquid output pipeline, 24-Fourth water pump, 25-Spray water output pipeline. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] As shown in Figures 1-7, the present invention provides an acetylene gas washing device, which includes an acetylene gas conveying pipeline 2 connected to the outlet of a generator 1. Along the conveying direction of the acetylene gas, the acetylene gas conveying pipeline 2 is provided with a gas washing tower 3 for preliminary removal of impurities, a water washing tower 4 for further removal of impurities, and a cooling tower 5 for cooling. The water washing tower 4 is provided with multiple water inlet pipes 6 that enter radially from the side and are spaced apart from top to bottom. The inlet of the water inlet pipe 6 inside the water washing tower 4 is provided with a nozzle 7. The end of the water inlet pipe 6 away from the nozzle 7 is connected to the cooling tower 5.

[0036] Each inlet pipe 6 is connected to a nozzle 7, which is a vortex nozzle. Each nozzle 7 includes a volute 701, inside which a vortex cavity 702 is formed. The vortex cavity 702 is a thin-walled body formed by rotating a semi-circular arc around an axis. A connecting pipe 703 connected to the inlet pipe 6 is provided on one side wall of the volute 701. The connecting pipe 703 and the inlet pipe 6 can be connected by thread or welding, for example. An outlet pipe 704 connected to the vortex cavity 702 is provided on one side of the volute 701. The axis of the outlet pipe 704 is coaxial with the axis of the volute 701. The axis of the connecting pipe 703 is spatially perpendicular to the axis of the outlet pipe 704, and the axis of the connecting pipe 703 is eccentrically positioned relative to the axis of the volute 701. The connecting pipe 703 is provided with a water inlet 705, which is tangent to the side wall of the vortex cavity 702. The water outlet pipe 704 is provided with a water outlet 706 that is perpendicularly connected to the vortex cavity 702. The inner wall of the end of the water outlet 706 away from the vortex cavity 702 forms a conical surface 707. The angle of the inner wall of the conical surface 707 can be, for example, 60-150 degrees, so that the washing water is evenly distributed, the atomization area is increased, the atomization effect is improved, the contact area between the washing water and the gas is increased, the gas-liquid contact path and time are extended, the dissolution of soluble substances or pollutants in the gas is promoted, the absorption, dissolution or reaction efficiency of harmful substances in the gas by the water washing tower 4 is improved, the water washing effect is enhanced, and the impurities in the gas are more fully washed and removed. In practical applications, the connecting pipe 703 delivers washing water into the vortex chamber 702. The washing water, confined by the inner wall of the vortex chamber 702, rotates along its inner wall, forming a vortex that is then sprayed out from the outlet hole 706. The confined shape of the sprayed washing water by the inner wall of the outlet hole 706 creates a hollow cone shape, ensuring complete coverage of the washing tower's cross-section. Using vortex-type nozzles 7 ensures sufficient water intake while extending their lifespan and reducing clogging. Each inlet pipe 6 connects to one nozzle 7, reducing the number of nozzles and their space requirements. This achieves efficient water supply and distribution within the limited space of the washing tower 4, making the structure of the washing tower 4 more compact.

[0037] The water inlet pipes 6 are arranged in the upper middle part of the washing tower 4. There can be 5-10 water inlet pipes 6, preferably 6-8. The distance between adjacent water inlet pipes 6 can be, for example, 450-550mm. Each water inlet pipe 6 is equipped with a control valve 8 to realize individual control of the water inlet pipe 6, which facilitates the adjustment of the water volume of each water inlet pipe 6, which is beneficial to production and water conservation. The water inlet pipes 6 can be, for example, steel pipes with a diameter of 50-100mm. Multiple water inlet pipes 6 enter the washing tower 4 radially from the side, providing a stable water flow, reducing water flow fluctuations and turbulence. The water flow rate and velocity flowing out of each water inlet pipe 6 are consistent, which helps to maintain stable washing conditions in the washing tower 4 and improve the stability and reliability of the washing effect.

[0038] Each inlet pipe 6 has a flange 19 on its outer wall. The flange 19 is coaxial with the inlet pipe 6. The inlet pipe 6 extends from one side of the flange 19 to the other side. The inner ring of the flange 19 is seamlessly welded to the outer wall of the inlet pipe 6, for example.

[0039] The wall of the water washing tower 4 has openings that connect to flanges 20. The number of openings is the same as the number of inlet pipes 6, with each opening corresponding to one inlet pipe 6. Each flange 20 is connected to the flange 19 of one inlet pipe. The inlet pipe 6 passes through the flange 20 and extends into the interior of the water washing tower 4. The inner diameter of the flange 20 is greater than the maximum height of the nozzle 7, allowing the inlet pipe 6 and the nozzle 7 to be easily removed from the inner hole of the flange 20. When the nozzle 7 needs to be inspected, the connection between the flange 19 and the flange 20 (the flange 19 and the flange 20 are connected by bolts) is disconnected, and the inlet pipe 6 and the nozzle 7 are directly pulled out along the radial direction of the water washing tower 4.

[0040] Multiple water inlet pipes 6 converge into a main water inlet pipe 9 and are connected to the bottom of the cooling tower 5. A first water pump 11 is installed on the main water inlet pipe 9 to transport the cooling water from the cooling tower 5 to the water washing tower 4.

[0041] The upper part of the cooling tower 5 is equipped with a primary water inlet, which is connected to the primary water input pipe 12. A second water pump 13 is installed on the primary water input pipe 12. The primary water is the production water used for the first time. The cooling tower 5 is a packed tower. The primary water enters the cooling tower 5 through the primary water input pipe 12 and cools the acetylene input into the cooling tower 5. Cooling water is collected at the bottom of the cooling tower 5. The cooling water is used as the washing water for the water washing tower 4. After being pressurized by the first water pump 11, it is delivered to the water washing tower 4 and sprayed evenly through the nozzles 7. It fully contacts the rising gas and completes the washing of the gas before returning to the bottom of the water washing tower 4.

[0042] Acetylene gas from generator 1 is delivered through pipe 2, which is connected to the lower part of scrubbing tower 3. Pipe 2 also exits from the top of scrubbing tower 3 and connects to the lower part of water scrubbing tower 4. The acetylene gas delivery pipe 2 at the top of water scrubbing tower 4 is connected to the lower part of cooling tower 5. Acetylene gas from generator 1 enters scrubbing tower 3 through the bottom and comes into countercurrent contact with the clear liquid water sprayed from the top of scrubbing tower 3, initially lowering the temperature while washing away most of the mist entrained in the gas.

[0043] The acetylene gas delivery pipeline 2 enters the water washing tower 4 tangentially, so that the acetylene gas forms a rotating airflow after entering the water washing tower 4, which increases the residence time and path of the acetylene gas in the water washing tower 4, strengthens the contact and mixing between gas and liquid, improves the mass transfer and heat transfer effect, and helps to fully remove impurities in the acetylene gas.

[0044] The bottom of the water washing tower 4 is provided with a washing water output pipe 14, which is connected to the generator 1. The washing water output pipe 14 is provided with a third water pump 15, which is used to transport the washing water at the bottom of the water washing tower 4 to the generator 1 for reaction with calcium carbide.

[0045] The washing tower 4 is equipped with a level gauge for monitoring the washing water level. The level gauge is interlocked with the third water pump 15. The third water pump 15 adjusts the frequency according to the washing liquid level at the bottom of the washing tower 4 to ensure that the liquid level in the washing tower 4 is maintained at a suitable height and to ensure the stable operation of the washing tower 4.

[0046] The acetylene gas delivery pipeline 2 between the gas scrubbing tower 3 and the water scrubbing tower 4 is equipped with a positive water seal 16 to prevent acetylene gas backflow.

[0047] The acetylene output pipe 17 at the top of the cooling tower 5 is connected to the compressor 18, and the compressed gas output pipe of the compressor 18 is connected to the downstream device.

[0048] The calcium carbide slag slurry output pipe 21 at the bottom of the generator 1 is connected to the calcium carbide slag slurry storage tank 22. The calcium carbide slag slurry storage tank 22 is equipped with a clear liquid water output pipe 23. The other end of the clear liquid water output pipe 23 is connected to the upper part of the gas scrubbing tower 3. A fourth water pump 24 is installed on the clear liquid water output pipe 23. The calcium carbide slag slurry in the generator 1 is transported to the calcium carbide slag slurry storage tank 22 for storage. After the calcium carbide slag slurry is clarified and cooled to below 35°C in the storage tank, it is transported to the gas scrubbing tower 3 through the clear liquid water output pipe 23. It is sprayed down from the upper part of the gas scrubbing tower 3 and comes into countercurrent contact with the acetylene gas to wash away most of the mist entrained in the gas.

[0049] The bottom of the gas scrubbing tower 3 is equipped with a spray water outlet, which is connected to a spray water output pipe 25. The spray water output pipe 25 is connected to a spray water inlet at the top of the generator 1. The spray water in the gas scrubbing tower 3 is transported to the generator 1 through the spray water output pipe 25 to participate in the calcium carbide reaction. Example

[0050] Acetylene gas (including acetylene, hydrogen sulfide, phosphine, and nitrogen, with the following volume percentages: acetylene: over 98%, phosphine and nitrogen: very small amounts, nitrogen: less than 1%, temperature 80-88℃, pressure 4-9KPa) escapes from the liquid phase of generator 1 and enters the lower part of scrubbing tower 3 from the top of generator 1. It comes into countercurrent contact with the clear water sprayed from the top of scrubbing tower 3, initially lowering the temperature while washing away most of the mist entrained in the gas (the mist's main component is Ca(OH)₂, and Ca(OH)₂ dust rises with the ascending acetylene gas). Then, it exits from the top of scrubbing tower 3, passes through positive water seal 16, and enters the lower part of water scrubbing tower 4 (the main components entering water scrubbing tower 4 are acetylene, calcium hydroxide, and nitrogen, with the following volume percentages: acetylene: over 98%, phosphine and nitrogen: very small amounts, nitrogen: less than 1%). Acetylene gas (98-99%, calcium hydroxide: less than 1%, nitrogen: less than 1%) is reacted with washing water, mainly recycled clear liquid from cooling tower 5, added to the upper part of the water washing tower 4 in a countercurrent manner to lower the gas temperature to about 45-55℃ and remove mist again. The washing water at the bottom of the water washing tower 4 is sent to generator 1 to react with calcium carbide. The preliminarily cooled acetylene gas is output from the top of the water washing tower 4 and enters the lower part of the cooling tower 5. It reacts with the primary water flowing down from the top of the cooling tower 5 in a countercurrent manner through the packing layer. The temperature of the acetylene gas output from the top of the cooling tower 5 is reduced to 40℃ and the water content is reduced to less than 1%. It is then pressurized by the water ring compressor unit (e.g., pressurized to 0.1MPa) and then sent to the VAC workshop for synthesis process after passing through the gas-liquid separator.

[0051] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An apparatus for washing acetylene gas, characterized by comprising: It includes an acetylene gas delivery pipeline (2) connected to the outlet of the generator (1). Along the direction of acetylene gas delivery, the acetylene gas delivery pipeline (2) is provided with a gas washing tower (3) for preliminary removal of impurities, a water washing tower (4) for further removal of impurities, and a cooling tower (5) for cooling. The water washing tower (4) is provided with multiple water inlet pipes (6) that enter radially from the side and are spaced apart from top to bottom. The inlet of the water inlet pipe (6) inside the water washing tower (4) is provided with a nozzle (7). The end of the water inlet pipe (6) away from the nozzle (7) is connected to the cooling tower (5).

2. The acetylene gas scrubbing apparatus according to claim 1, wherein Each inlet pipe (6) is connected to a nozzle (7). The nozzle (7) is a vortex nozzle. Each nozzle (7) includes a volute (701). A vortex cavity (702) is formed inside the volute (701). The vortex cavity (702) is a thin-walled body formed by rotating a semi-circular arc around an axis. A connecting pipe (703) connected to the inlet pipe (6) is provided on one side wall of the volute (701). The connecting pipe (703) is threaded or welded to the inlet pipe (6). An outlet pipe (704) connected to the vortex cavity (702) is provided on one side of the volute (701). 4) The axis of the volute (701) is coaxial with the axis of the volute (701). The axis of the connecting pipe (703) is spatially perpendicular to the axis of the outlet pipe (704). The axis of the connecting pipe (703) is eccentrically set with the axis of the volute (701). The connecting pipe (703) is provided with an inlet hole (705). The inlet hole (705) is tangent to the side wall of the vortex cavity (702). The outlet pipe (704) is provided with an outlet hole (706) that is perpendicularly connected to the vortex cavity (702). The inner wall of the end of the outlet hole (706) away from the vortex cavity (702) forms a conical surface (707).

3. The acetylene gas scrubbing apparatus according to claim 1 or 2, characterized by Multiple water inlet pipes (6) converge into a main water inlet pipe (9) and are connected to the bottom of the cooling tower (5). A first water pump (11) is installed on the main water inlet pipe (9). A flange (19) is installed on the outer wall of each water inlet pipe (6). The flange (19) is coaxial with the water inlet pipe (6). The water inlet pipe (6) extends from one side of the flange (19) to the other side.

4. The acetylene gas scrubbing device according to claim 1, characterized in that, The upper part of the cooling tower (5) is provided with a primary water inlet, which is connected to the primary water input pipe (12). A second water pump (13) is provided on the primary water input pipe (12).

5. The acetylene gas scrubbing apparatus according to claim 1, wherein The acetylene gas delivery pipe (2) output from the generator (1) is connected to the lower part of the gas scrubbing tower (3). The acetylene gas delivery pipe (2) outputs from the top of the gas scrubbing tower (3) and is connected to the lower part of the water scrubbing tower (4). The acetylene gas delivery pipe (2) at the top of the water scrubbing tower (4) is connected to the lower part of the cooling tower (5).

6. The acetylene gas scrubbing apparatus according to claim 1 or 5, characterized in that, The acetylene gas delivery pipeline (2) enters from the tangential direction of the water washing tower (4).

7. The acetylene gas scrubbing apparatus according to claim 3, wherein The bottom of the washing tower (4) is provided with a washing water output pipe (14), which is connected to the generator (1). The washing water output pipe (14) is provided with a third water pump (15). The tower wall of the washing tower (4) has openings and is connected to flanges (20). The number of openings is the same as the number of inlet pipes (6). Each opening corresponds to one inlet pipe (6). Each flange (20) is connected to the flange (19) of one inlet pipe. The inlet pipe (6) passes through the flange (20) and extends into the interior of the washing tower (4). The inner diameter of the flange (20) is greater than the maximum height of the nozzle (7).

8. The acetylene gas scrubbing apparatus according to claim 1 or 7, wherein The washing tower (4) is equipped with a level gauge for monitoring the level of the washing water, and the level gauge is interlocked with the third water pump (15).

9. The acetylene gas scrubbing apparatus according to claim 1, characterized in that, The acetylene gas delivery pipeline (2) between the gas scrubbing tower (3) and the water scrubbing tower (4) is equipped with a positive water seal (16) to prevent acetylene backflow.

10. The acetylene gas scrubbing apparatus according to claim 1, wherein The acetylene output pipe (17) at the top of the cooling tower (5) is connected to the compressor (18), and the compressed gas output pipe of the compressor (18) is connected to the downstream device.

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