An automatic slag discharging system for an acetylene generator and its automatic slag discharging method

Abstract

The present invention discloses an automatic slag discharging system and an automatic slag discharging method for an acetylene generator, which includes a slag discharging pipeline connected to the generator, a first flushing water pipeline, a second flushing water pipeline and an exhaust pipeline connected to the slag discharging pipeline; a first flushing water valve and a second flushing water valve are respectively arranged on the first flushing water pipeline and the second flushing water pipeline, a first slag discharging valve and a second slag discharging valve are arranged on the slag discharging pipeline, the first end of the slag discharging pipeline is hermetically connected to the bottom slag discharging port of the generator, and its second end is connected to the waste residue discharging area; a liquid level sensor electrically connected to the DCS system is arranged inside the generator, and the first slag discharging valve, the second slag discharging valve, the first flushing water valve and the second flushing water valve all adopt valves that can be remotely controlled, and their control ends are respectively connected to the DCS system so as to remotely and automatically control their opening or closing actions. Using the present invention can effectively solve the problems of serious material waste, environmental pollution and high labor intensity of workers during the slag discharging process of the acetylene generator.

Description

Technical Field

[0001] The present invention belongs to the technical field of acetylene production, and particularly relates to an automatic slag discharging system for an acetylene generator and an automatic slag discharging method therefor. Background Art

[0002] The generator is the main equipment for producing acetylene. Due to the ferrosilicon and various impurities carried in calcium carbide, after reacting with water, they sink to the bottom of the generator under the action of gravity and agitation, which will block the overflow pipe orifice. Therefore, it is necessary to regularly discharge the slag from the generator. The existing slag discharging methods are mostly manual slag discharging. The generator discharges slag manually once every 1 - 2 hours. When discharging slag, the lower slag discharging valve of the generator is opened. After the lower slag discharging valve is fully opened, the lower slag discharging valve is closed, and at the same time, the upper slag discharging valve is opened. The slag is discharged by using the time difference between the closing of the lower slag discharging valve and the opening of the upper slag discharging valve to avoid the low liquid level of the generator caused by the failure to close the slag discharging valve in time during slag discharging. During slag discharging, the main control of the generator stops the feeding operation of the generator, and the first storage hopper is not allowed to feed the second storage hopper; after slag discharging, when the liquid level of the generator rises to the normal liquid level, the feeding operation of the generator is carried out again. This operation requires close cooperation between the main control and the site. The on-site inspection workers need to operate back and forth on the first and second floors, with a large labor intensity; and during slag discharging, a large amount of acetylene gas will also escape while discharging ferrosilicon, resulting in waste of resources, high content of VOCs discharged, environmental pollution, and also causing the pressure in the generator to drop rapidly, forming a negative pressure, sucking in air to form an explosive mixture, or the liquid level in the generator is too low, triggering an accident. Discharging the unreacted calcium carbide will also cause waste of raw materials. Therefore, it is necessary to develop an automatic slag discharging system and an automatic slag discharging method for an acetylene generator, so as to solve the problems of serious waste of materials, environmental pollution, large labor intensity of workers, and easy occurrence of accidents in the generator.

[0003] The Chinese utility model patent specification with the patent number CN209555161U discloses an automatic slag discharging system for a calcium carbide method acetylene generator. This slag discharging system can realize the automation of the slag discharging process of the generator, reduce the labor intensity of workers, and make the slag discharging process safer. However, when using this system, the unreacted calcium carbide will still be discharged into the slurry pool and continue to hydrolyze to release acetylene, resulting in problems of material waste and environmental pollution. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide an automatic slag discharging system for an acetylene generator and an automatic slag discharging method therefor, so as to solve the problems of serious material waste, environmental pollution, large labor intensity of workers, and easy occurrence of accidents in the acetylene generator during the slag discharging process.

[0005] The technical solution of the present invention is as follows:

[0006] The present invention discloses an automatic slag discharging system for an acetylene generator, which includes a slag discharging pipeline sealedly connected to the slag discharging port at the bottom of the generator, a flushing water pipeline sealedly connected to the slag discharging pipeline, a first slag discharging valve and a second slag discharging valve arranged on the slag discharging pipeline. The first end of the slag discharging pipeline is sealedly connected to the slag discharging port at the bottom of the generator, and its second end is connected to the waste slag discharging area; the first slag discharging valve is arranged on the slag discharging pipeline near the first end of the slag discharging pipeline, and the second slag discharging valve is arranged on the slag discharging pipeline near the second end of the slag discharging pipeline; an exhaust pipeline is also connected to the slag discharging pipeline between the first slag discharging valve and the second slag discharging valve; the flushing water pipeline includes a first flushing water pipeline and a second flushing water pipeline sealedly connected to the slag discharging pipeline between the two slag discharging valves, wherein the connection port of the first flushing water pipeline and the slag discharging pipeline is arranged near the first slag discharging valve, and the connection port of the second flushing water pipeline and the slag discharging pipeline is arranged near the second slag discharging valve; a first flushing water valve and a second flushing water valve are respectively arranged on the first flushing water pipeline and the second flushing water pipeline; it also includes a DCS system and a liquid level sensor arranged inside the generator and electrically connected to the DCS system. The first slag discharging valve, the second slag discharging valve, the first flushing water valve and the second flushing water valve are all valves that can be remotely controlled; the DCS system is respectively connected to the control ends of the first flushing water valve, the second flushing water valve, the first slag discharging valve and the second slag discharging valve to control their opening or closing actions.

[0007] Further, the flushing water pipeline can be arranged in the following way, including a total flushing water pipeline connected to the water outlet of the supernatant system. The first flushing water pipeline is composed of a first section of pipeline and a second section of pipeline. The diameter of the first section of pipeline is the same as that of the total flushing water pipeline, and the diameter of the second section of pipeline is smaller than that of the first section of pipeline; the second end of the first section of pipeline is connected to the first end of the second section of pipeline through a first reducing joint, and the second end of the second section of pipeline is connected to the second slag discharging pipeline; the second flushing water pipeline is composed of a third section of pipeline and a fourth section of pipeline. The diameter of the third section of pipeline is the same as that of the total flushing water pipeline, and the diameter of the fourth section of pipeline is smaller than that of the third section of pipeline; the second end of the third section of pipeline is connected to the first end of the fourth section of pipeline through a second reducing joint, and the second end of the fourth section of pipeline is connected to the second slag discharging pipeline; the first end of the first section of pipeline and the first end of the third section of pipeline are connected to the total flushing water pipeline through a tee joint.

[0008] Further, the flushing pipelines can be arranged in the following manner. The first flushing pipeline and the second flushing pipeline are respectively connected to the outlet of the supernatant system through a third reducing joint and a fourth reducing joint. The inner diameter of the pipeline between the third reducing joint and the outlet of the first flushing pipeline is smaller than the inner diameter of the pipeline between the third reducing joint and the outlet of the supernatant system. The inner diameter of the pipeline between the fourth reducing joint and the outlet of the second flushing pipeline is smaller than the inner diameter of the pipeline between the fourth reducing joint and the outlet of the supernatant system. The first flushing water valve is arranged on the pipeline between the third reducing joint and the outlet of the first flushing pipeline, and the second flushing water valve is arranged on the pipeline between the fourth reducing joint and the outlet of the second flushing pipeline.

[0009] Further, the slag discharge pipeline is sequentially formed by connecting a first slag discharge pipeline, a second slag discharge pipeline, and a third slag discharge pipeline. The inner diameter of the second slag discharge pipeline is larger than the inner diameters of the first slag discharge pipeline and the third slag discharge pipeline. The first slag discharge pipeline is connected to one end of the second slag discharge pipeline through a fifth reducing joint, and the third slag discharge pipeline is connected to the other end of the second slag discharge pipeline through a sixth reducing joint. Both the first flushing pipeline and the second flushing pipeline are connected to the second slag discharge pipeline. The connection port of the first flushing pipeline and the second slag discharge pipeline is arranged at a position close to the fifth reducing joint, and the connection port of the second flushing pipeline and the second slag discharge pipeline is arranged at a position close to the sixth reducing joint.

[0010] Further, both the first slag discharge valve and the second slag discharge valve adopt thin-plate pneumatic gate valves.

[0011] The present invention also discloses an automatic slag discharge method for an acetylene generator automatic slag discharge system. First, the air in the slag discharge pipeline is completely discharged into the atmosphere. Then, the slag discharge pipeline is flushed to backflush the mixed slurry into the generator. Finally, the ferrosilicon in the slag discharge pipeline is discharged into the ferrosilicon discharge area.

[0012] Further, the automatic slag discharge method disclosed by the present invention specifically includes the following steps:

[0013] (1) Check whether the liquid level of the generator, the positive water seal, and the reverse water seal liquid level are normal. If normal, proceed to the next step. If abnormal, stop the execution of the slag discharge program;

[0014] (2) Automatically open the first flushing water valve and the second flushing water valve to completely discharge the air in the slag discharge pipeline;

[0015] (3) Automatically close the first flushing water valve and the second flushing water valve. After complete closure, open the first slag discharge valve;

[0016] (4) After the first slag discharge valve is completely opened, open the second flushing water valve to backflush the slag discharge pipeline, and backflush the mixed slurry in the slag discharge pipeline into the generator;

[0017] (5) Automatically close the first slag discharge valve. After it is completely closed, open the first flushing water valve, close the second flushing water valve, open the second slag discharge valve, and flush the ferrosilicon in the slag discharge pipeline to discharge the ferrosilicon in the slag discharge pipeline.

[0018] (6) After discharging the ferrosilicon in the slag discharge pipeline, the first flushing water valve, the second flushing water valve, the first slag discharge valve, and the second slag discharge valve automatically return to their initial closed states.

[0019] Furthermore, when performing step (5), it is necessary to ensure that the water pressure at the outlet of the first flushing water pipeline is large enough to completely flush out the ferrosilicon in the slag discharge pipeline.

[0020] Furthermore, when performing step (2), on-site personnel should observe whether there is water discharge from the exhaust pipeline to ensure the pipeline is unobstructed; during the execution of steps (2) to (6), if it is detected that the water pressure in the flushing water pipeline drops, the pressure needs to be increased in a timely manner to ensure the slag flushing effect.

[0021] The beneficial effects of the present invention are as follows:

[0022] Since a second flushing water pipeline is connected near the second slag discharge valve, the mixed slurry in the slag discharge pipeline can be backflushed into the generator before slag discharge, effectively avoiding material waste and environmental pollution caused by the overflow of acetylene gas; since an exhaust pipeline is connected to the slag discharge pipeline, the air in the slag discharge pipeline can be completely discharged before slag discharge, preventing air from entering the generator to form an explosive mixture; the DCS system is respectively connected to the control ends of the first flushing water valve, the second flushing water valve, the first slag discharge valve, and the second slag discharge valve and the signal output end of the liquid level sensor, and can realize the automatic control of the entire slag discharge process, greatly reducing the labor intensity of workers.

[0023] The inner diameter of the total flushing water pipeline is larger than the inner diameters of the second section of the first flushing water pipeline and the fourth section of the second flushing water pipeline. The first flushing water valve is arranged on the second section of the pipeline, and the second flushing water valve is arranged on the fourth section of the pipeline, ensuring that when the first flushing water pipeline and the second flushing water pipeline are opened simultaneously, the water pressure intensity at the outlets of the two flushing water pipelines is large enough.

[0024] The first flushing water pipeline and the second flushing water pipeline can also be respectively connected to the outlet of the supernatant liquid system through a third reducing joint and a fourth reducing joint. Since the inner diameter of the pipeline between the third reducing joint and the outlet of the first flushing water pipeline is smaller than the inner diameter of the pipeline between the third reducing joint and the outlet of the supernatant liquid system, and the inner diameter of the pipeline between the fourth reducing joint and the outlet of the second flushing water pipeline is smaller than the inner diameter of the pipeline between the fourth reducing joint and the outlet of the supernatant liquid system, it is ensured that when the first flushing water pipeline and the second flushing water pipeline are opened simultaneously, the water pressure intensity of the two flushing water pipelines is large enough.

[0025] Both the first slag discharge valve and the second slag discharge valve adopt thin-plate pneumatic gate valves, which greatly reduce the valve leakage rate.

[0026] Since the larger the slag discharge valve is, the more expensive it is. By setting the inner diameter of the second slag discharge pipeline to be larger than that of the first slag discharge pipeline and the third slag discharge pipeline, and arranging the first slag discharge valve on the first slag discharge pipeline and the second slag discharge valve on the third slag discharge pipeline, the efficiency of flushing and backwashing the slag discharge pipeline is further improved on the basis of reducing costs.

[0027] By adopting the automatic slag discharge method of the acetylene generator disclosed in the present invention, through steps such as discharging the air in the slag discharge pipeline and backflushing the mixed slurry into the generator, the problems of serious material waste, environmental pollution, high labor intensity of workers, and easy occurrence of accidents in the generator are effectively solved. Brief Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the present invention. Detailed Embodiments

[0029] Such as Figure 1As shown in the figure, the present invention discloses an automatic slag discharging system for an acetylene generator, which includes a DCS system and a slag discharging pipeline hermetically connected to the slag discharging port at the bottom of the generator. The slag discharging pipeline includes a first slag discharging pipeline 16, a second slag discharging pipeline 17, and a third slag discharging pipeline 18. The first slag discharging pipeline 16 and the second slag discharging pipeline 17 are connected together through a fifth reducer joint 9, and the second slag discharging pipeline 17 and the third slag discharging pipeline 18 are connected together through a sixth reducer joint 10. One end of the first slag discharging pipeline 16 is connected to the elbow at the bottom of the generator, and one end of the third slag discharging pipeline 18 is connected to the waste slag discharging area. A first slag discharging valve 7 is provided on the first slag discharging pipeline, and a second slag discharging valve 8 is provided on the second slag discharging pipeline. An exhaust pipeline 11 and a flushing pipeline are also hermetically connected to the slag discharging pipeline between the first slag discharging valve and the second slag discharging valve. The flushing pipeline hermetically connected to the slag discharging pipeline includes a first flushing pipeline 19, a second flushing pipeline 20, and a main flushing pipeline 1. A main flushing valve 2 is provided on the main flushing pipeline 1. The connection port of the first flushing pipeline 19 to the slag discharging pipeline is arranged near the first slag discharging valve 7, and the connection port of the second flushing pipeline 20 to the slag discharging pipeline is arranged near the second slag discharging valve 8. A first flushing water valve 5 and a second flushing water valve 6 are respectively provided on the first flushing pipeline 19 and the second flushing pipeline 20. The flushing pipeline can be arranged in the following way: The first flushing pipeline 19 is composed of a first section of pipeline and a second section of pipeline. The diameter of the first section of pipeline is the same as that of the main flushing pipeline 1, and the diameter of the second section of pipeline is smaller than that of the first section of pipeline. The second end of the first section of pipeline is connected to the first end of the second section of pipeline through a first reducer joint 3, and the second end of the second section of pipeline is connected to the second slag discharging pipeline. Similarly, the second flushing pipeline 20 is composed of a third section of pipeline and a fourth section of pipeline. The diameter of the third section of pipeline is the same as that of the main flushing pipeline 1, and the diameter of the fourth section of pipeline is smaller than that of the third section of pipeline. The second end of the third section of pipeline is connected to the first end of the fourth section of pipeline through a second reducer joint 4, and the second end of the fourth section of pipeline is connected to the second slag discharging pipeline. The first ends of the first section of pipeline and the third section of pipeline are connected to the main flushing pipeline 1 through a tee joint. The flushing pipeline can also be arranged in the following way: The first flushing pipeline and the second flushing pipeline are respectively connected to the outlet of the supernatant liquid system through a third reducer joint and a fourth reducer joint. The inner diameter of the pipeline between the third reducer joint and the outlet of the first flushing pipeline is smaller than the inner diameter of the pipeline between the third reducer joint and the outlet of the supernatant liquid system, and the inner diameter of the pipeline between the fourth reducer joint and the outlet of the second flushing pipeline is smaller than the inner diameter of the pipeline between the fourth reducer joint and the outlet of the supernatant liquid system. The first flushing water valve is arranged on the pipeline between the third reducer joint and the outlet of the first flushing pipeline, and the second flushing water valve is arranged on the pipeline between the fourth reducer joint and the outlet of the second flushing pipeline. A liquid level sensor is arranged inside the generator 15. The lower half of the generator 15 is connected to the supernatant liquid system through an overflow valve 13 and an overflow pipeline. The upper part of the generator 15 is connected to a balance pipeline, and a gas phase balance valve 12 is arranged on the balance pipeline.The overflow port of the overflow pipe is connected to the slurry buffer tank, and the generator 15 is also connected to the positive water seal, the reverse water seal, and the safety water seal.

[0030] The first slag discharge valve, the second slag discharge valve, the first flushing water valve, and the second flushing water valve are all remotely controllable valves; the control ends of the first flushing water valve, the second flushing water valve, the first slag discharge valve, and the second slag discharge valve, as well as the signal output end of the liquid level sensor, are all connected to the DCS system to realize the automatic control of the entire slag discharge process. The first slag discharge valve and the second slag discharge valve adopt pneumatic gate valves of model ZD-CB09S1 14 H1R; the first flushing water valve and the second flushing water valve adopt cut-off valves of model szcv1401-P-K.

[0031] An automatic slag discharge method based on the automatic slag discharge system of the acetylene generator. First, the air in the slag discharge pipe is completely discharged into the atmosphere; then the slag discharge pipe is flushed to backflush the mixed slurry into the generator; finally, the ferrosilicon in the slag discharge pipe is discharged to the ferrosilicon discharge area.

[0032] Specifically, it includes the following steps:

[0033] (1) Check whether the liquid levels of the generator, the positive water seal, and the reverse water seal are normal. If normal, proceed to the next step; if abnormal, stop the execution of the slag discharge program.

[0034] (2) Automatically open the first flushing water valve and the second flushing water valve to completely discharge the air in the slag discharge pipe.

[0035] (3) Automatically close the first flushing water valve and the second flushing water valve. After complete closure, open the first slag discharge valve.

[0036] (4) After the first slag discharge valve is completely opened, open the second flushing water valve to backflush the slag discharge pipe, and backflush the mixed slurry in the slag discharge pipe into the generator.

[0037] (5) Automatically close the first slag discharge valve. After complete closure, open the first flushing water valve, close the second flushing water valve, open the second slag discharge valve, and flush the ferrosilicon in the slag discharge pipe to discharge the ferrosilicon in the slag discharge pipe.

[0038] (6) After the ferrosilicon in the slag discharge pipe is discharged, the first flushing water valve, the second flushing water valve, the first slag discharge valve, and the second slag discharge valve automatically return to the initial closed state.

[0039] During the execution of step (3), the ferrosilicon in the generator will enter the inside of the slag discharge pipe; during the execution of step (4), the ferrosilicon will stay in the slag discharge pipe by its own gravity; during the execution of step (5), the ferrosilicon is discharged by the pressure of the upper flushing water.

[0040] When performing step (5), it is necessary to ensure that the water pressure at the outlet of the first flushing pipeline is large enough to completely flush out the ferrosilicon in the slag discharge pipeline.

[0041] When performing step (2), on-site personnel should observe whether water is discharged from the exhaust pipeline to ensure its smoothness; during the execution of steps (2) to (6), if it is detected that the water pressure in the flushing pipeline drops, the pressure should be increased in a timely manner to ensure the slag flushing effect.

[0042] After the mixed slurry is backflushed into the generator 15, the liquid level in the generator rises, and the mixed slurry will flow into the slag slurry recovery device along the overflow pipeline 14. The acetylene gas recovered by the slag slurry recovery device is incorporated into the acetylene gas holder.

[0043] When using the automatic slag discharge system of the acetylene generator disclosed in the present invention for automatic slag discharge, since an exhaust pipeline and a backwashing step are added before slag discharge, before slag discharge, close the two slag discharge valves and open the two flushing water valves to perform exhaust operation on the slag discharge pipeline. The flushing water flows out along the emptying pipe, expelling the air in the slag discharge pipe, preventing air from entering the generator when the upper slag discharge valve is opened, avoiding the formation of a mixed explosion with acetylene gas, and greatly reducing the safety hazard. Before slag discharge, the generator backwashes the slag discharge pipe, backflushing the mixed slurry into the generator. The mixed slurry flows into the slag slurry recovery device along the overflow pipe, and the acetylene gas recovered by the slag slurry recovery device is incorporated into the acetylene gas holder, effectively avoiding material waste and acetylene gas overflow pollution of the environment; the DCS system is respectively connected to the control ends of the first flushing water valve, the second flushing water valve, the first slag discharge valve, and the second slag discharge valve and the signal output end of the liquid level sensor, and can realize the automatic control of the entire slag discharge process, greatly reducing the labor intensity of workers. Both the first slag discharge valve and the second slag discharge valve adopt thin plate pneumatic gate valves, greatly reducing the valve leakage rate. By setting the inner diameter of the second slag discharge pipeline to be larger than that of the first slag discharge pipeline and the third slag discharge pipeline, the efficiency of flushing and backflushing the slag discharge pipeline is greatly improved.

Claims

1. An automatic slag discharging system for an acetylene generator, comprising a slag discharging pipeline sealingly connected to the slag discharging port at the bottom of the generator, a flushing water pipeline sealingly connected to the slag discharging pipeline, a first slag discharging valve and a second slag discharging valve arranged on the slag discharging pipeline, characterized in that, The first end of the slag discharge pipeline is hermetically connected to the slag discharge port at the bottom of the generator, and its second end is connected to the waste residue discharge area; a first slag discharge valve is arranged on the slag discharge pipeline near the first end of the slag discharge pipeline, and a second slag discharge valve is arranged on the slag discharge pipeline near the second end of the slag discharge pipeline; an exhaust pipeline is also connected to the slag discharge pipeline between the first slag discharge valve and the second slag discharge valve; the flushing pipeline includes a first flushing pipeline and a second flushing pipeline that are hermetically connected to the slag discharge pipeline between the two slag discharge valves, wherein the connection port of the first flushing pipeline to the slag discharge pipeline is arranged near the first slag discharge valve, and the connection port of the second flushing pipeline to the slag discharge pipeline is arranged near the second slag discharge valve; a first flushing water valve and a second flushing water valve are respectively arranged on the first flushing pipeline and the second flushing pipeline; it further includes a DCS system and a liquid level sensor arranged inside the generator and electrically connected to the DCS system, and the first slag discharge valve, the second slag discharge valve, the first flushing water valve and the second flushing water valve are all valves that can be remotely controlled; the DCS system is respectively connected to the control ends of the first flushing water valve, the second flushing water valve, the first slag discharge valve and the second slag discharge valve to control their opening or closing actions, and the second flushing water valve is used to backwash the slag discharge pipeline when the first flushing water valve is closed, and backflush the mixed slurry in the slag discharge pipeline into the generator, and the first flushing water valve is used to flush the ferrosilicon in the slag discharge pipeline when the second flushing water valve is closed, and discharge the ferrosilicon in the slag discharge pipeline.

2. The automatic slag discharging system for acetylene generators according to claim 1, wherein, It further includes a total flushing pipeline connected to the water outlet of the supernatant liquid system. The first flushing pipeline consists of a first section of pipeline and a second section of pipeline. The diameter of the first section of pipeline is the same as that of the total flushing pipeline, and the diameter of the second section of pipeline is smaller than that of the first section of pipeline; the second end of the first section of pipeline is connected to the first end of the second section of pipeline through a first reducing joint, the second end of the second section of pipeline is connected to the second slag discharge pipeline, and the first flushing water valve is arranged on the second section of pipeline; the second flushing pipeline consists of a third section of pipeline and a fourth section of pipeline. The diameter of the third section of pipeline is the same as that of the total flushing pipeline, and the diameter of the fourth section of pipeline is smaller than that of the third section of pipeline; the second end of the third section of pipeline is connected to the first end of the fourth section of pipeline through a second reducing joint, the second end of the fourth section of pipeline is connected to the second slag discharge pipeline, and the second flushing water valve is arranged on the fourth section of pipeline; the first ends of the first section of pipeline and the third section of pipeline are connected to the total flushing pipeline through a tee.

3. The automatic slag discharging system of the acetylene generator according to claim 1, wherein, The first flushing pipeline and the second flushing pipeline are respectively connected to the water outlet of the supernatant liquid system through a third reducing joint and a fourth reducing joint. The inner diameter of the pipeline between the third reducing joint and the water outlet of the first flushing pipeline is smaller than the inner diameter of the pipeline between the third reducing joint and the water outlet of the supernatant liquid system, and the inner diameter of the pipeline between the fourth reducing joint and the water outlet of the second flushing pipeline is smaller than the inner diameter of the pipeline between the fourth reducing joint and the water outlet of the supernatant liquid system; the first flushing water valve is arranged on the pipeline between the third reducing joint and the water outlet of the first flushing pipeline, and the second flushing water valve is arranged on the pipeline between the fourth reducing joint and the water outlet of the second flushing pipeline.

4. The automatic slag discharging system of the acetylene generator according to any one of claims 1-3, characterized in that The slag discharge pipeline is formed by sequentially connecting a first slag discharge pipeline, a second slag discharge pipeline, and a third slag discharge pipeline. The inner diameter of the second slag discharge pipeline is larger than that of the first slag discharge pipeline and the third slag discharge pipeline. The first slag discharge pipeline is connected to one end of the second slag discharge pipeline through a fifth reducer joint, and the third slag discharge pipeline is connected to the other end of the second slag discharge pipeline through a sixth reducer joint. The first flushing pipeline and the second flushing pipeline are both connected to the second slag discharge pipeline. The connection port of the first flushing pipeline and the second slag discharge pipeline is arranged at a position close to the fifth reducer joint, and the connection port of the second flushing pipeline and the second slag discharge pipeline is arranged at a position close to the sixth reducer joint.

5. The automatic slag discharging system of the acetylene generator according to claim 4, characterized in that, Both the first slag discharge valve and the second slag discharge valve adopt thin-plate pneumatic gate valves.

6. An automatic slag discharge method for the automatic slag discharge system of the acetylene generator according to claim 1, characterized in that, First, completely discharge the air in the slag discharge pipeline into the atmosphere; then flush the slag discharge pipeline to backflush the mixed slurry into the generator; finally, discharge the ferrosilicon in the slag discharge pipeline to the ferrosilicon discharge area, which specifically includes the following steps: (1) Check whether the liquid level of the generator, the positive water seal, and the reverse water seal liquid level are normal. If normal, proceed to the next step. If abnormal, stop the execution of the slag discharge procedure; (2) Automatically open the first flushing water valve and the second flushing water valve to completely discharge the air in the slag discharge pipeline; (3) Automatically close the first flushing water valve and the second flushing water valve. After complete closure, open the first slag discharge valve; (4) After the first slag discharge valve is completely opened, open the second flushing water valve to backflush the slag discharge pipeline, and backflush the mixed slurry in the slag discharge pipeline into the generator; (5) Automatically close the first slag discharge valve. After complete closure, open the first flushing water valve, close the second flushing water valve, open the second slag discharge valve, and flush the ferrosilicon in the slag discharge pipeline to discharge the ferrosilicon in the slag discharge pipeline; (6) After discharging the ferrosilicon in the slag discharge pipeline, the first flushing water valve, the second flushing water valve, the first slag discharge valve, and the second slag discharge valve automatically return to the initial closed state.

7. The automatic slag discharging method according to claim 6, wherein When performing step (5), it is necessary to ensure that the water pressure at the outlet of the first flushing pipeline is large enough to completely flush out the ferrosilicon in the slag discharge pipeline.

8. The automatic slag discharging method according to claim 6, wherein When performing step (2), on-site personnel should observe whether water is discharged from the exhaust pipeline to ensure the pipeline is unobstructed; during the execution of steps (2) to (6), if it is detected that the water pressure in the flushing pipeline drops, the pressure needs to be increased in a timely manner to ensure the slag flushing effect.

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