Dry-method acetylene production system for recycling slag slurry water

Abstract

The invention relates to a dry acetylene production system for recycling slag slurry water, which comprises an acetylene generator (1), a washing tower (2) and a water injection device (3), and the water injection device (3) comprises an annular pipe (34) arranged above a nozzle and used for injecting water; one side of the annular pipe (34) is communicated with a water injection pump (31), and the other side of the annular pipe (34) is also communicated with a water drainage pipe (304); the downstream of the water injection pump (31) is communicated with a flushing pump (42) for pumping flushing water through a branch pipe; and control valves for controlling the on-off of pipelines are respectively arranged at the downstream of the flushing pump (42), the downstream of the annular pipe (34) and the downstream of the water injection pump (3). A production pipeline and a flushing pipeline can be conveniently switched by utilizing the control valve, wall bonding substances in the ring pipe can be conveniently cleaned and prevented from blocking the ring pipe and the spray head, the acetylene gas productivity can be improved, pump body mechanical seal slurry leakage is reduced, labor is saved, and safety accidents and acetylene gas leakage are avoided.

Description

Technical Field

[0001] The invention relates to a dry acetylene production system for recycling slag slurry water, and in particular to a technology for preventing pipeline blockage caused by recycling slag slurry water. Background Art

[0002] The dry acetylene production process is the most common acetylene production process. Its principle is: in the acetylene generator, a ring pipe is used to distribute water to several nozzles, and the nozzles spray water mist on calcium carbide of a certain particle size, so that the calcium carbide undergoes hydrolysis reaction to generate acetylene gas. Since the generated acetylene gas carries a large amount of calcium carbide slag dust, it needs to be passed into a washing tower for water washing before use. The solution after water washing is called "slag slurry water" and contains a large amount of calcium carbide slag dust.

[0003] Out of the concept of environmental protection and conservation, the existing dry acetylene process reuses the slurry water, that is, after removing solid impurities such as carbide slag lumps and calcium carbonate precipitates by sedimentation or filtration, it returns to the acetylene generator for reuse in acetylene production.

[0004] However, in addition to solid impurities, the liquid phase of the slurry water also contains a large amount of calcium ions from calcium carbide. During the production process, the calcium hydroxide formed by these calcium ions will gradually grow and precipitate on the wall of the ring pipe to form a wall, which not only occupies the water flow area in the ring pipe, but also turns into hard lumps and enters the nozzle to cause blockage, especially after being dispersed by the water flow. The blockage of the ring pipe and the nozzle will directly lead to a decrease in the water injection volume of the acetylene generator and incomplete calcium carbide reaction, which will not only reduce the production capacity of acetylene, but also cause the pipeline pressure to rise, resulting in leakage of the pump body and the machine seal.

[0005] Since the main component of the wall is calcium hydroxide, it is gradually formed during the production process. The existing slurry water reuse technologies, such as sedimentation and filtration, cannot effectively solve the above problems. Personnel can only be arranged to regularly decompose and manually clean the wall materials, which not only wastes labor costs, but also easily causes safety accidents such as scalding and falling, and easily leads to acetylene gas leakage due to sealing failure. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the soluble substances in the recycled slurry water in the existing acetylene generator are deposited on the wall of the annular pipe for water injection, causing the annular pipe and the nozzle to be blocked.

[0007] To achieve the above-mentioned purpose, the present invention provides a dry acetylene production system for recycling slurry water, comprising: an acetylene generator 1, a washing tower 2, and a water injection device 3.

[0008] The acetylene generator 1 comprises a tank body 10 and a plurality of nozzles 39 arranged at the upper inner side of the tank body 10 and used for spraying reaction water into the calcium carbide in the tank body 10 to generate acetylene gas.

[0009] The washing tower 2 comprises an acetylene gas outlet 201 arranged at the top, a slurry water outlet 202 arranged at the bottom, an acetylene gas inlet 203 to be eluted, and a elution water pipe 21 .

[0010] The acetylene gas inlet 203 of the washing tower 2 is communicated with the acetylene gas outlet 100 of the tank body 10 , and the washing water pipe 21 is connected to the washing water source for washing the acetylene gas generated by the acetylene generator 1 .

[0011] The water injection device 3 includes: a water injection pump 31 , a ring pipe 34 , and a flushing pump 42 .

[0012] The water inlet of the water injection pump 31 is connected to the slurry water outlet 202 at the lower end of the washing tower 2 through the first water injection pipe 3011, and the water outlet of the water injection pump 31 is connected to one side of the annular pipe 34 through the second water injection pipe 3012, so as to pump the slurry water into the annular pipe 34.

[0013] The annular pipe 34 is connected to the nozzle 39 .

[0014] The dry acetylene production system that reuses slurry water also includes a flushing device.

[0015] The flushing device includes a flushing pump 42 , a drain pipe 304 and a control valve. The water outlet of the flushing pump 42 is connected to the second water injection pipe 3012 via the first flushing pipe 401 , and the water inlet of the flushing pump 42 is connected to the flushing water source via the second flushing pipe 402 .

[0016] The side of the ring pipe 34 away from the second water injection pipe 3012 is connected to the lower part of the washing tower 2 through the drainage pipe 304, so as to discharge the flushing water of the ring pipe 34 into the washing tower 2.

[0017] Therefore, the loop pipe 34 can be flushed with, for example, industrial water, and the flushed wall residues are discharged from the drain pipe 304 to the washing tower 2 for removal.

[0018] That is, by using the water injection valve 302, the flushing valve 41 and the drain valve 307, the water injection passage (the second water injection pipe 3012) used for production can be switched to a passage (the first flushing pipe 401) used for flushing, and then the flushing pump 42 can be used to pump, for example, industrial water into the annular pipe 34 to flush out the wall materials in the annular pipe 34 to prevent them from clogging the annular pipe 34 and the nozzle.

[0019] Preferably, a flow regulating valve 303 is provided in the second water injection pipe 3012, and the flow regulating valve 303 is located on the downstream side of the connection with the first flushing pipe 401. When flushing, the flow regulating valve 303 is opened to the maximum opening to ensure sufficient flushing water.

[0020] Preferably, the annular pipe 34 is composed of two arc-shaped pipes 34a and 34b of the same shape, and the two arc-shaped pipes 34a and 34b are respectively provided with branch pipe valves 306a and 306b for controlling the opening and closing of the arc-shaped pipes 34a and 34b. During the flushing process, closing one of the two branch pipe valves alternately can avoid the flow of flushing water from decreasing due to diversion, thereby ensuring a good flushing effect.

[0021] Preferably, a filter 32 is provided in the first water injection pipe 3011 for filtering solid impurities in the slurry water.

[0022] Preferably, a plurality of conduit valves 305 are provided at the lower end of each conduit 36, which are respectively arranged in each conduit 36 ​​and are respectively used to control the on and off of each conduit valve 305. The lower end of each conduit 36 ​​is connected to each nozzle 39 via a detachable hose 37 .

[0023] Since the nozzle 39 is a structure fixed to the tank body 10, the use of the hose 37 does not require strict alignment of each conduit 36 ​​with the nozzle 39 when installing the annular tube 34. It is only necessary to fix the connecting structure (flange) at the end of the hose 37 to the water injector 391 of the nozzle 39.

[0024] Preferably, the inner diameter of the annular tube 34 is 50 mm, the inner diameter of the conduit 36 ​​is 40 mm, the length is at least 50 cm, and the inner diameter of the hose 37 is 25 mm. That is, compared with the dry acetylene generator equipment on the market, the diameters of the annular tube 34, the conduit 36, and the hose 37 are narrower, which can increase the flow rate of the liquid therein and help prevent the nozzle from being blocked.

[0025] The length of the conduit 36 ​​is at least 50 cm, which provides more potential energy for the slurry water and ensures rapid water injection from top to bottom into the nozzle, thereby preventing small particles in the annular tube 4 from settling in the annular tube and being unable to be discharged through the nozzle in time, settling in the annular tube 34 and growing as crystal seeds, agglomerating and forming walls.

[0026] Preferably, one end of the drainage pipe 304 is connected to the side of the ring pipe 34 away from the second water injection pipe 3012, and the other end is connected to the lower part of the washing tower 2, so that no excess sewage is discharged.

[0027] Preferably, the annular tube 34, the conduit 36 ​​and the hose 37 are made of stainless steel.

[0028] Preferably, a flange for fixing the bearing is provided on the upper side of the tank body 10, and the annular tube 34 is fixed to the flange by a detachable bracket 38. Stainless steel has the physical property of being less prone to sticking to precipitation, which is beneficial to preventing precipitation from forming on the wall.

[0029] Preferably, the rinsing water source and the flushing water source are the same water source. Since the flushing water source is the same water source as the rinsing water source for rinsing acetylene gas, the flushing water produced by flushing can be directly used as reaction water for calcium carbide. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a dry acetylene production system that recycles slurry water; Figure 2 It is a partial structural illustration of the acetylene generator and water injection device; Figure 3 It is a structural illustration of the water injection device. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the overall structure of the dry acetylene production system that reuses slurry water. Figure 1 As shown, the dry acetylene production system for recycling slurry water includes: an acetylene generator 1, a water injection device 3, a washing tower 2, Figure 2 Partial structures of the acetylene generator 1 and the water injection device 3 are shown.

[0033] See also Figure 1 The acetylene generator 1 comprises a tank body 10 , and a screw feeder 13 is connected to one side of the upper portion of the tank body 10 . The screw feeder 13 is used to transport calcium carbide of a certain particle size into the tank body 10 .

[0034] Combination Figure 2 From the perspective of the embodiment, the top of the tank body 10 is provided with a driving motor 14 and a reducer 15 supported by a circular cylinder 16, which are used to drive the rotating shaft 141 to rotate. The rotating shaft 141 is connected to the four-layer distribution disc 17 in the tank body 10, driving the distribution disc 17 to rotate. The distribution disc 17 is located at the lower side of the screw feeder 13, and the calcium carbide fed into the tank body 10 can fall evenly along the specific trajectory defined by the four-layer distribution disc 17. The lower end of the circular cylinder 16 is fixedly connected to the tank body 10 through a flange, and a bearing device is provided inside the circular cylinder 16. The driving rotating shaft 141 is rotatably installed inside the circular cylinder 16 through the bearing.

[0035] like Figure 1 As shown, eight nozzles 39 are fixedly arranged on the top wall of the tank body 10, and the eight nozzles 39 are used to spray reaction water to the calcium carbide moving downward in the tank body 10, so that the calcium carbide undergoes a hydrolysis reaction to generate acetylene gas. The acetylene outlet 100 to be eluted on the upper side of the tank body 10 is connected to the acetylene inlet 203 to be eluted at the lower part of the washing tower 2 through the acetylene gas pipe 101, and the acetylene gas generated in the tank body 10 is transported to the washing tower 2 for washing.

[0036] See also Figure 1 The upper part of the washing tower 2 is provided with a washing water pipe 21 for providing industrial water to the washing tower 2, washing the acetylene gas entering the washing tower 2, and removing a large amount of impurities such as carbide slag dust carried by the acetylene gas. The washed acetylene gas is sent out of the washing tower 2 through the acetylene gas outlet 201 at the top of the washing tower.

[0037] The slurry water formed by washing is collected in the lower part of the washing tower 2. Figure 1 The circulating pump 22 sends part of the slurry water back to the upper middle part of the washing tower 2 through the circulating pipe 23 for circulating spraying.

[0038] Figure 3 The structure of the water injection device is shown below. Figures 1 to 3 The structure and function of the water injection pump 31 and the water injection device 3 are described as follows: Figures 1 to 3 As shown in FIG. 3 , the water injection device 3 includes a water injection pump 31 and a circular annular pipe 34 .

[0039] See also Figure 1 The inlet of the water injection pump 31 is connected to the slurry water outlet 202 at the lower end of the washing tower 2 through the first water injection pipe 3011, and the outlet of the water injection pump 31 is connected to one side of the ring pipe 34 through the second water injection pipe 3012. The water injection pump 31 pumps the slurry water into the acetylene generator 1 as reaction water for calcium carbide, which is used for the production of acetylene.

[0040] See also Figure 1 A filter 32 is provided in the first water injection pipe 3011 to filter solid impurities in the slurry water to prevent the solid impurities in the slurry water from clogging the pipe and the nozzle. The filter 32 is a basket filter with a replaceable filter screen or filter element installed inside. For details, please refer to the utility model patent with application number 202020176356.1 and the name of a device for recycling slurry water in acetylene production, which will not be repeated here.

[0041] A flow meter (not shown) is provided in the second water injection pipe 3012. Since blockage of the nozzle 39 or the filter 32 will reduce the flow in the second water injection pipe 3012, the flow meter can detect whether the nozzle is blocked and remind the staff to replace it in time.

[0042] Depend on Figure 2 As shown, the ring pipe 34 is fixed just above each nozzle 39.

[0043] See also Figure 2 , 3The annular tube 34 is arranged around the circular tube 16 on the upper side of the tank body 10 and is fixed to the flange on the lower side of the circular tube 16 by a detachable bracket 38. The bracket 38 includes a base 381 fixed to the flange 380 by bolts, an angle steel frame 382 extending upward from the base 381 and then bent outward at a right angle, and a clamping ring 383 for fixing the annular tube 34. There are four brackets 38, which are evenly installed on the flange, with a simple structure and convenient manufacturing.

[0044] like Figure 3 As shown, the annular pipe 34 is a circular ring composed of two arc-shaped pipes 34a and 34b of the same shape, equal height and symmetrical arrangement. The upstream ends of the two arc-shaped pipes 34a and 34b are respectively connected to the downstream end of the second water injection pipe 3012, and the downstream end of each arc-shaped pipe is respectively connected to the upstream end of the drainage pipe 304.

[0045] Branch pipe valves 306 a and 306 b are respectively provided at positions of the arc pipes near the drain pipe 304 to control the connection and disconnection between the arc pipes 34 a and 34 b and the drain pipe 304 .

[0046] Combination Figure 2 and Figure 3 As can be seen, eight vertical conduits 36 are evenly arranged on the lower side of the ring tube 34, and the lower end of each conduit 36 ​​is connected to each nozzle 39 installed on the top wall of the tank body 10 through a detachable hose 37. The above "evenly" means that the distance between two adjacent conduits 36 is equal.

[0047] A conduit valve 305 is provided at the lower part of each conduit 36 ​​to control the on and off of each conduit valve 305, and can independently control the conduction and closing of the arc tubes 34a, 34b and the nozzle 39, so that a single nozzle 39 can be inspected.

[0048] In this embodiment, the inner diameter of the annular tube 34 is 50 mm, the inner diameter of the conduit 36 ​​is 40 mm, and the length is at least 50 cm, and the inner diameter of the hose 37 is 25 mm. The annular tube 34, the conduit 36, and the hose 37 are made of stainless steel.

[0049] The flushing device is described below.

[0050] The flushing device is mainly used to flush the annular pipe 34 (arc pipes 34a, 34b) to prevent the annular pipe 34 and surrounding pipes from being blocked by impurities in the slurry water. The flushing device is composed of a water injection valve 302, a drainage valve 307, a drainage pipe 304, a flushing valve 41, and a flushing pump 42.

[0051] See also Figure 1The two ends of the drain pipe 304 are respectively connected between the left side of the ring pipe 34 (i.e., the side away from the second water injection pipe 3012) and the lower part of the washing tower 2, connecting the ring pipe 34 and the washing tower 2. A drain valve 307 is provided in the drain pipe 304 to control the on and off of the drain pipe 304.

[0052] See also Figure 1 The water outlet of the flushing pump 42 is connected to the second water injection pipe 3012 through the first flushing pipe 401, and the water inlet of the flushing pump 42 is connected to the flushing water source through the second flushing pipe 402. In this embodiment, the water of the flushing water source is the same industrial water as the washing water, that is, the industrial water source that provides the washing water is used as the flushing water source. A flushing valve 41 is provided in the first flushing pipe 401 to control the on and off of the first flushing pipe 401.

[0053] See also Figure 1 The second water injection pipe 3012 is provided with a water injection valve 302 and a flow regulating valve 303, wherein the water injection valve 302 is located on the upstream side of the connection with the first flushing pipe 401, and is used to control the on-off of the second water injection pipe 3012, and the flow regulating valve 303 is located on the downstream side of the connection with the first flushing pipe 401, and can control the flow of the fluid passing through.

[0054] In addition, the dry acetylene production system that reuses slurry water is also provided with a control device. The drain valve 307, flushing valve 41, water injection valve 302, flow regulating valve 303, and flushing pump 42 are installed with corresponding microprocessors and sensors, so that the control device can remotely control them.

[0055] When producing acetylene gas, the flushing pump 42, the drain valve 307, and the flushing valve 41 are closed, the water injection valve 302 is opened, and the flow regulating valve 303 is adjusted to the opening required for production. The industrial water used as washing water enters the washing tower 2 through the rinse water pipe 21 to wash the acetylene gas. The slurry water produced by washing is pumped into the annular pipe 34 through the first water injection pipe 3011 and the second water injection pipe 3012, and sprayed to the calcium carbide on the distribution plate 17 by each nozzle 39.

[0056] Solid impurities in the slurry water are filtered by the filter 32. Acetylene gas generated by the chemical reaction of calcium carbide and water is transported to the washing tower 2 through the acetylene gas pipe 101 for washing, and clean acetylene gas is discharged from the gas outlet 201. Calcium carbide mud is discharged from the discharge port at the lower end of the tank body 10. When it is necessary to flush the annular pipe 34, the acetylene generator 1 is first stopped (i.e., calcium carbide is stopped from being added to the acetylene generator 1), and the industrial water for washing is stopped from being supplied to the washing tower 2, and the slurry water in the washing tower 2 is pumped into the annular pipe 34. After the washing tower 2 is emptied, the water injection pump 31 is turned off, and the water injection valve 302 is closed, and the flow regulating valve 303 is opened to the maximum opening, so that the annular pipe 34 of the acetylene generator and the washing tower 2 are in a flushing state. After that, the drain valve 307 and the flushing valve 41 are opened, and then the flushing pump 42 is turned on to pump industrial water into the annular pipe 34 for flushing, and the flushed wall residue is discharged from the drain pipe 304 to the lower part of the washing tower 2.

[0057] During the flushing process, one of the two branch valves 306a and 306b is closed alternately, that is, the first branch valve 306a is opened first and the second branch valve 306b is closed. After flushing for a period of time, the first branch valve 306a is closed and the second branch valve 306b is opened. This can avoid the flow rate of flushing water being reduced due to diversion and ensure a good flushing effect.

[0058] After flushing, the flushing pump 42 is closed, and then the drain valve 307 and the flushing valve 41 are closed, the flow regulating valve 303 is adjusted to the opening required for production, the water injection valve 302 is opened, and the water injection pump 31 is started to provide industrial water for washing to the washing tower 2 to carry out conventional acetylene production. During the flushing process, the flushing water entering the washing tower 2 is pumped into the acetylene generator 1 by the water injection pump 31 as reaction water to produce a hydrolysis reaction with calcium carbide, and the flushed wall residue is filtered and removed by the filter 32. The above-mentioned dry acetylene production system using recycled slurry water has the following beneficial effects:

[0059] 1. Use the water injection valve 302, flushing valve 41 and drain valve 307 to switch the water injection passage (second water injection pipe 3012) used for production to the passage (first flushing pipe 401) used for flushing, and then use the flushing pump 42 to pump industrial water into the annular pipe 34, so as to flush the wall materials in the annular pipe 34 and prevent them from clogging the annular pipe 34 and the nozzle, thereby increasing the water injection volume, ensuring the complete reaction of calcium carbide in the acetylene generator, and improving production capacity, and preventing the increase of pipeline pressure from causing leakage of pump body machine seal. Since there is no need to disassemble the pipeline and nozzle, compared with disassembly and cleaning, it can avoid acetylene gas leakage caused by seal failure.

[0060] Second, since the flushing water after flushing is discharged to the washing tower 2 and then used for the production of acetylene gas in a cycle, no water waste will be caused. The flushed wall residue can also be filtered and removed by the filter 32, and there is no need to set up a separate removal device.

[0061] 3. The annular pipe 34 is composed of two arc-shaped pipes, and the arc-shaped pipes at both ends are respectively provided with branch valves. During the flushing process, one of the two branch valves is alternately closed to avoid a decrease in the flow rate of the flushing water due to diversion, thereby improving the flushing effect.

[0062] Fourth, a vertical conduit 36 ​​with a length of at least 50 cm is set at the lower side of the annular tube 34 to inject water into the nozzle from top to bottom, so as to avoid the sedimentation in the annular tube 4 and prevent the sedimentation from agglomerating on the wall.

[0063] 5. The hose 37 and the conduit valve 305 provided between the lower end of the conduit 36 ​​and each nozzle 39 are used to facilitate the staff to disassemble and install the annular tube 34. Since the nozzle 39 is a structure fixed to the tank body 10, the use of the hose 37 does not require strict alignment of each conduit 36 ​​with the nozzle 39 when installing the annular tube 34. It is only necessary to fix the connection structure (flange) at the end of the hose 37 to the water injector 391 of the nozzle 39.

[0064] 6. The inner diameter of the ring tube 34 is 50 mm, the inner diameter of the conduit 36 ​​is 40 mm, and the inner diameter of the hose 37 is 25 mm. Compared with the dry acetylene generator equipment on the market, the diameters of the ring tube 34, the conduit 36, and the hose 37 are narrower, which can increase the flow rate of the liquid therein and help prevent the nozzle from being blocked.

[0065] 7. The ring pipe 34, the conduit 36 ​​and the hose 37 are made of stainless steel instead of the carbon steel commonly used in the traditional dry acetylene generator. The stainless steel has the physical property of being less prone to sticking and precipitating, which is helpful to prevent precipitation from forming on the wall.

[0066] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

[0067] For example, a dry acetylene generator with a similar principle but a different structure is used, such as a dry acetylene generator with a different number of nozzles; or valves for maintenance are provided upstream and downstream of the filter and the water injection pump; or other types of filters or other solid-liquid separation equipment are used to ensure that the recycled slurry water does not contain solid impurities such as calcium carbide slag; the downstream end of the drain pipe 304 is connected to a sewage tank, etc.

[0068] After production verification, the existing dry acetylene production system was transformed into the dry acetylene production system for recycling slag slurry water provided by the present invention: The acetylene generator has been running for 159 hours in total within 7 days, with an operating rate of 94.64%. The production and operation are stable, and the process indicators are within the standard range; The production load of the acetylene generator technical transformation increased from 1500 m³ / h to 1800 m³ / h; the content of raw calcium carbide in the generator slag decreased by 0.05%, indicating that the hydrolysis reaction was more thorough; The water injection pump uses the original pump body, and its mechanical seal leakage is significantly reduced; The flushing pipeline at the end of the water injection pipeline is connected to the washing tower. When the generator is shut down for standby, the slurry water is deposited in the water injection ring pipe and is thoroughly flushed, and the situation where the pipeline wall affects the start-up does not occur.

[0069] In summary, the present invention can clean the wall-forming materials in the annular tube to prevent them from clogging the annular tube and the nozzle, thereby increasing the water injection volume, ensuring the complete reaction of calcium carbide in the acetylene generator, and improving the production capacity. It can also prevent the increase of pipeline pressure from causing leakage of slurry from the pump body seal, and is suitable for promotion and use in this technical field.

Claims

1. Dry acetylene production system for recycling slurry water, including: Acetylene generator (1), washing tower (2), water injection device (3), The acetylene generator (1) comprises a tank body (10), and a plurality of nozzles (39) arranged at the upper inner portion of the tank body (10) and used for spraying calcium carbide in the tank body (10) to generate acetylene gas by reacting water. The washing tower (2) comprises a tower body, an acetylene gas outlet (201) arranged at the top of the tower body, a slurry water outlet (202) arranged at the bottom, an acetylene gas inlet (203) to be eluted, and a elution water pipe (21). The acetylene gas inlet (203) to be eluted of the scrubbing tower (2) is in communication with the acetylene gas outlet (100) to be eluted of the tank body (10), and the elution water pipe (21) is connected to a elution water source and is used to elute the acetylene gas generated by the acetylene generator (1). The water injection device (3) comprises: a water injection pump (31), a ring pipe (34), and a flushing pump (42). The water inlet of the water injection pump (31) is connected to the slurry water outlet (202) at the lower end of the washing tower 2 via a first water injection pipe (3011), and the water outlet of the water injection pump (31) is connected to one side of the annular pipe (34) via a second water injection pipe (3012), so as to pump the slurry water into the annular pipe (34). The annular tube (34) is in communication with the nozzle (39). It is characterized in that Including flushing device, The flushing device comprises a flushing pump (42), a drainage pipe (304) and a control valve; the water outlet of the flushing pump (42) is connected to the second water injection pipe (3012) via a first flushing pipe (401); the water inlet of the flushing pump (42) is connected to a flushing water source via a second flushing pipe (402); The side of the ring pipe (34) away from the second water injection pipe (3012) is connected to the lower part of the washing tower (2) through the drainage pipe (304) and is used to discharge the flushing water used to flush the ring pipe (34) into the washing tower (2). The control valve comprises: The water injection valve (302) is arranged in the second water injection pipe (3012) and is located at the upstream side of the connection point of the first flushing pipe (401), and is used to control the opening and closing of the second water injection pipe (3012). A drain valve (307) is disposed in the drain pipe (304) and is used to control the on / off state of the drain pipe (304). A flushing valve (41) is arranged in the first flushing pipe (401) and is used to control the opening and closing of the first flushing pipe (401).

2. The dry acetylene production system for recycling slurry water according to claim 1 is characterized in that: The second water injection pipe (3012) is provided with a flow regulating valve (303), and the flow regulating valve (303) is located on the downstream side of the connection point of the first flushing pipe (401).

3. The dry acetylene production system for recycling slurry water according to claim 2 is characterized in that: The annular tube (34) is composed of two arc-shaped tubes (34a) and (34b) of the same shape. The two arc-shaped tubes (34a) and (34b) are respectively provided with branch valves (306a) and (306b) for controlling the opening and closing of the arc-shaped tubes (34a) and (34b).

4. The dry acetylene production system for recycling slurry water according to claim 3 is characterized in that: The first water injection pipe (3011) is provided with a filter (32) for filtering solid impurities in the slurry water.

5. The dry acetylene production system for recycling slurry water according to claim 3 is characterized in that: A plurality of conduit valves (305) are provided at the lower end of each conduit (36), which are respectively arranged in each conduit (36) and are respectively used to control the on and off of each conduit valve (305). The lower end of each of the conduits (36) is connected to each of the spray heads (39) via a detachable hose (37).

6. The dry acetylene production system for recycling slurry water according to claim 5 is characterized in that: The inner diameter of the annular tube (34) is 50 mm, the inner diameter of the conduit (36) is 40 mm and the length is at least 50 cm, and the inner diameter of the hose (37) is 25 mm.

7. According to the dry acetylene production system for recycling slurry water according to any one of claims 1 to 6, one end of the drainage pipe (304) is connected to the side of the ring pipe (34) away from the second water injection pipe (3012), and the other end is connected to the lower part of the washing tower (2).

8. According to the dry acetylene production system for recycling slag slurry water according to any one of claims 1 to 6, the annular pipe (34), the conduit (36) and the hose (37) are made of stainless steel.

9. The dry acetylene production system for recycling slurry water according to any one of claims 1 to 6, characterized in that: A flange for fixing a bearing is provided on the upper side of the tank body (10), and the annular tube (34) is fixed to the flange by a detachable bracket (38).

10. The dry acetylene production system for recycling slurry water according to any one of claims 1 to 6, characterized in that: The rinsing water source and the flushing water source adopt the same water source.

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