A discharging device and method for disproportionate resin

Abstract

The present invention discloses a device and method for discharging deproportionated resin, which relates to the technical field of polysilicon production equipment. The main purpose is to provide a device for discharging deproportionated resin that can quickly and effectively clear blocked pipes and cut off the contact between chlorosilane and air. The main technical solution of the present invention is: a device for discharging deproportionated resin, comprising: a reaction component, a first nitrogen pipeline connected to the top of a reaction tank, and one end of a discharge pipeline connected to the middle of the first pipeline; a cleaning component, the cleaning component comprising a cleaning tank, a first air supply pipeline, a second air supply pipeline and a spray component, one end of the first pipeline connected to the cleaning tank, one end of the first air supply pipeline connected to the first pipeline, and the other end connected to the spray component, one end of the second air supply pipeline connected to the first air supply pipeline, and the other end connected to the cleaning tank, and the spray component is arranged on the upper part of the cleaning tank. The present invention is mainly used for cleaning resin.

Description

Technical Field

[0001] The present invention relates to the technical field of polysilicon production equipment, and in particular to a discharging device and method for deproportionated resin. Background Art

[0002] In polysilicon production, trichlorosilane is the primary raw material. During the preparation of trichlorosilane, due to incomplete reaction, some of it is converted into two by-products, silicon tetrachloride and dichlorosilane, forming a mixture of chlorosilanes. Silicon tetrachloride and dichlorosilane undergo a deproportionation reaction in the presence of a catalyst and can be converted back into trichlorosilane. Currently, the catalysts used in deproportionation units are mostly resin catalysts, which have a limited service life and require regular replacement. Resins are loose, porous solid particles that easily retain large amounts of chlorosilanes, making them difficult to completely replace. Chlorosilanes are chemically very active and can ignite upon contact with air. Therefore, effective control measures are required during resin discharge to avoid safety accidents. During discharge, the granular resins are prone to clogging in pipelines, requiring effective clearing measures.

[0003] The existing method of treating resin is to nitrogen-displace the deproportionation device, discharge the resin after analysis and find it qualified, discharge the resin directly into a recovery barrel, and then transport it to a safe place for harmless treatment; set up a cleaning tank next to the deproportionation device, discharge the resin into the cleaning tank, and allow the chlorosilane to fully react with water. This method can effectively reduce the contact time between the resin and air and effectively prevent the combustion of chlorosilane on the resin surface. However, the acidic gas generated during the cleaning process is directly discharged, which can easily cause environmental pollution; when the resin is unloaded, it is difficult to clear the blockage; a large amount of discharged resin accumulates in the cleaning tank, which can easily cause insufficient reaction between chlorosilane and water. When the operator separates the resin from the cleaning tank, the reaction is likely to occur again, causing personal injury accidents. Summary of the Invention

[0004] In view of this, an embodiment of the present invention provides a discharging device and a discharging method for an anti-disproportionated resin, the main purpose of which is to provide a discharging device for an anti-disproportionated resin that can quickly and effectively clear blocked pipes and cut off the contact between chlorosilane and air.

[0005] To achieve the above objectives, the present invention mainly provides the following technical solutions:

[0006] In one aspect, an embodiment of the present invention provides a device for discharging deproportionated resin, the device comprising:

[0007] A reaction component, comprising a reaction tank, a first nitrogen pipeline, a first pipeline, and a discharge pipeline, wherein the first nitrogen pipeline is connected to the top of the reaction tank, and one end of the discharge pipeline is connected to the middle of the first pipeline;

[0008] A cleaning component, the cleaning component includes a cleaning tank, a first air supply pipe, a second air supply pipe and a spray component, one end of the first pipe is connected to the cleaning tank, one end of the first air supply pipe is connected to the first pipe, and the other end is connected to the spray component, one end of the second air supply pipe is connected to the first air supply pipe, and the other end is connected to the cleaning tank, and the spray component is arranged on the upper part of the cleaning tank.

[0009] Furthermore, the reaction component also includes a first valve, a second valve, a third valve and a fourth valve, the first valve is arranged on the first nitrogen pipeline, the second valve is arranged on the discharge pipeline, the third valve and the fourth valve are arranged on the first pipeline, and the third valve and the fourth valve are located on both sides of the discharge pipeline.

[0010] Furthermore, the cleaning component also includes a fifth valve, a sixth valve and a seventh valve, the fifth valve is arranged on the first air supply pipe, the sixth valve is arranged on the second air supply pipe, the seventh valve is arranged on the first pipe, and the seventh valve and the third valve are located on both sides of the first air supply pipe.

[0011] Furthermore, the cleaning tank includes a tank body, a feed pipe and an air intake pipe, one end of the feed pipe is connected to the first pipe, and the other end extends into the tank body, one end of the air intake pipe is connected to the second air supply pipe, and the other end extends into the bottom of the tank body.

[0012] Furthermore, the air intake pipe is spirally wound on the bottom of the tank body, and a plurality of exhaust holes are provided on the air intake pipe.

[0013] Furthermore, the spray component includes a pump body, a spray pipe, a spray head and a liquid supply pipe, one end of the spray pipe is connected to the pump body, and the other end extends into the tank body and connected to the spray head, one end of the liquid supply pipe is connected to the pump body, and the other end extends into the tank body.

[0014] On the other hand, an embodiment of the present invention further provides a method for discharging an anti-disproportionated resin, the method comprising the following steps:

[0015] Nitrogen is introduced into the first nitrogen pipeline, the first pipeline, the first air supply pipeline and the second air supply pipeline respectively to replace the air in the pipelines and the reaction tank;

[0016] Open the discharge pipe and pass the resin in the reaction tank into the cleaning tank;

[0017] Turn on the pump to deliver water from the cleaning tank to the spray head to neutralize the generated acidic gas.

[0018] Further, the first nitrogen pipeline is opened to replace the air in the reaction tank to maintain a positive pressure in the reaction tank, and the first nitrogen pipeline is closed;

[0019] Open the first pipeline, the first air supply pipeline and the second air supply pipeline to replace the air in the pipelines.

[0020] Furthermore, when the discharge pipeline is blocked, the fourth valve is closed, the opening of the third valve is increased, and a back-flushing operation is performed on the discharge pipeline.

[0021] Furthermore, when the pressure in the reaction tank is lower than a preset value, the first nitrogen pipeline is opened to make the pressure in the reaction tank reach the preset value, and then the first nitrogen pipeline is closed.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] In the technical solution provided in the embodiment of the present invention, the function of the reaction component is to carry out anti-disproportionation reaction, the reaction component includes a reaction tank, a first nitrogen pipe, a first pipe and a discharge pipe, the first nitrogen pipe is connected to the top of the reaction tank, and one end of the discharge pipe is connected to the middle of the first pipe; the function of the cleaning component is to clean the resin containing chlorosilane, the cleaning component includes a cleaning tank, a first air supply pipe, a second air supply pipe and a spray component, one end of the first pipe is connected to the cleaning tank, one end of the first air supply pipe is connected to the first pipe, and the other end is connected to the spray component, one end of the second air supply pipe is connected to the first air supply pipe, and the other end is connected to the cleaning tank, and the spray component is arranged on the upper part of the cleaning tank. Compared with the prior art, the anti-disproportionation device is replaced with nitrogen, and the resin is discharged after the analysis is qualified, and the resin is directly discharged into a recovery barrel, and then transported to a safe place for harmless treatment; a cleaning pool is set next to the anti-disproportionation device, and the resin is discharged into the cleaning pool to fully react with chlorosilane and water. Such a method can effectively reduce the contact time between the resin and the air, effectively The present invention prevents the combustion of chlorosilane on the surface of the resin. However, the acidic gas generated during the cleaning process is directly discharged, which can easily cause environmental pollution. When the resin is unloaded, it is difficult to clear the blockage. A large amount of discharged resin accumulates in the cleaning tank, which can easily cause insufficient reaction between chlorosilane and water. When the operator separates the resin from the cleaning tank, the reaction can easily occur again, causing personal injury accidents. In this technical solution, nitrogen is passed through the reaction component and the cleaning component to replace the air in the reaction component and the cleaning component. Then, the discharge pipe is opened and the resin is passed into the cleaning tank. When the discharge pipe is blocked, the connection between the first pipe and the cleaning tank is closed, and the nitrogen pressure in the first pipe is increased, so that the nitrogen backflushes the discharge pipe, thereby achieving the technical effect of quickly and effectively unblocking the discharge pipe. The reaction in the cleaning tank will produce acidic gas. The first air supply pipe supplies air to the spray component to provide a power source, driving the spray component to spray water into the cleaning tank to neutralize the acidic gas, thereby achieving the effect of absorbing and neutralizing the acidic gas, thereby achieving the technical effect of preventing acidic gas from polluting the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a discharging device for anti-disproportionated resin provided in an embodiment of the present invention;

[0025] Figure 2 A schematic structural diagram of a cleaning component provided by an embodiment of the present invention;

[0026] Figure 3 A schematic structural diagram of an air intake duct provided in an embodiment of the present invention;

[0027] Figure 4 The present invention provides a flowchart of a method for discharging an anti-disproportionated resin. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] On the one hand, if Figures 1 to 3 As shown, an embodiment of the present invention provides a discharging device for anti-disproportionated resin, the device comprising:

[0030] The reaction component includes a reaction tank 11, a first nitrogen pipeline 12, a first pipeline 13 and a discharge pipeline 14. The first nitrogen pipeline 12 is connected to the top of the reaction tank 11, and one end of the discharge pipeline 14 is connected to the middle of the first pipeline 13;

[0031] The cleaning component includes a cleaning tank 21, a first air supply pipe 22, a second air supply pipe 23 and a spray component 24. One end of the first pipe 13 is connected to the cleaning tank 21, one end of the first air supply pipe 22 is connected to the first pipe 13, and the other end is connected to the spray component 24. One end of the second air supply pipe 23 is connected to the first air supply pipe 22, and the other end is connected to the cleaning tank 21. The spray component 24 is arranged on the upper part of the cleaning tank 21.

[0032] In the technical solution provided in the embodiment of the present invention, the function of the reaction component is to perform an anti-disproportionation reaction. The reaction component includes a reaction tank 11, a first nitrogen pipeline 12, a first pipeline 13 and a discharge pipeline 14. The first nitrogen pipeline 12 is connected to the top of the reaction tank 11, and one end of the discharge pipeline 14 is connected to the middle of the first pipeline 13; the function of the cleaning component is to clean the resin containing chlorosilane. The cleaning component includes a cleaning tank 21, a first air supply pipeline 22, a second air supply pipeline 23 and a spray component 24. One end of the first pipeline 13 is connected to the cleaning tank 21, and the first air supply pipeline 22 is connected to the middle of the first pipeline 13. One end of the second air supply pipe 23 is connected to the first air supply pipe 22, and the other end is connected to the cleaning tank 21. The spraying component 24 is arranged on the upper part of the cleaning tank 21. Compared with the prior art, the anti-disproportionation device is replaced with nitrogen, and the resin is discharged after the analysis is qualified. The resin is directly discharged into the recovery barrel and then transported to a safe place for harmless treatment; a cleaning pool is set next to the anti-disproportionation device, and the resin is discharged into the cleaning pool to fully react with chlorosilane and water. This method can effectively reduce the reaction between resin and air. The contact time of the gas can effectively prevent the chlorosilane on the surface of the resin from burning. However, the acid gas generated during the cleaning process is directly discharged, which can easily cause environmental pollution; when the resin is blocked during unloading, it is difficult to clear the blockage; a large amount of discharged resin accumulates in the cleaning tank, which can easily cause insufficient reaction between chlorosilane and water. When the operator separates the resin from the cleaning tank, it is easy to react again, causing personal injury accidents. In this technical solution, nitrogen is passed into the reaction component and the cleaning component to replace the air in the reaction component and the cleaning component, and then the discharge pipe 14 is opened to pass the resin into the cleaning tank 2 1, when the discharge pipe 14 is blocked, the connection between the first pipe 13 and the cleaning tank 21 is closed, and the nitrogen pressure in the first pipe 13 is increased at the same time, so that the nitrogen backflushes the discharge pipe 14, thereby achieving the technical effect of quickly and effectively unblocking the discharge pipe 14. The reaction in the cleaning tank 21 will produce acidic gas. The first air supply pipe 22 supplies air to the spray component 24 to provide a power source, driving the spray component 24 to spray water into the cleaning tank 21 to neutralize the acidic gas, thereby achieving the effect of absorbing and neutralizing the acidic gas, and further achieving the technical effect of preventing the acidic gas from polluting the air.

[0033] The function of the above-mentioned reaction component is to carry out anti-disproportionation reaction. The reaction component includes a reaction tank 11, a first nitrogen pipeline 12, a first pipeline 13 and a discharge pipeline 14. The first nitrogen pipeline 12 is connected to the top of the reaction tank 11, and one end of the discharge pipeline 14 is connected to the middle of the first pipeline 13. One end of the first nitrogen pipeline 12 is connected to the nitrogen output device, and the other end is connected to the top of the reaction tank 11, for introducing nitrogen into the reaction tank 11 so that the reaction tank 11 maintains a positive pressure. When the pressure in the reaction tank 11 decreases and is lower than a preset value, it is necessary to reopen the first valve 151 on the first nitrogen pipeline 12 and introduce nitrogen into the reaction tank 11 to maintain the pressure in the reaction tank 11. The discharge pipeline 14 is arranged at the bottom of the reaction tank 11, and , the discharge pipe 14 is connected to the middle of the first pipe 13, and a second valve 152 is provided on the discharge pipe 14 for controlling the opening or closing of the discharge pipe 14. One end of the first pipe 13 is connected to the nitrogen output device, and the other end is connected to the cleaning tank 21. A third valve 153 and a fourth valve 154 are respectively provided on the first pipe 13. The third valve 153 and the fourth valve 154 are arranged on both sides of the discharge pipe 14. A bursting disc is also provided on the upper part of the reaction tank 11. When the pressure in the reaction tank 11 exceeds the pressure, the bursting disc can relieve the pressure; the function of the cleaning component is to clean the resin containing chlorosilane. The cleaning component includes a cleaning tank 21, a first air supply pipe 22, a second air supply pipe 23 and a spray component 24. One end of the first pipe 13 is connected to The cleaning tank 21 is connected to the first air supply pipe 22, one end of which is connected to the first pipe 13, and the other end is connected to the spray component 24. The second air supply pipe 23 has one end connected to the first air supply pipe 22, and the other end is connected to the cleaning tank 21. The spray component 24 is arranged on the upper part of the cleaning tank 21. The cleaning tank 21 is loaded with water. Before the resin needs to be unloaded and cleaned, the first nitrogen pipe 12 is opened to keep the reaction tank 11 at a positive pressure. Then the first nitrogen pipe 12 is closed, and then the first pipe 13 is opened to keep nitrogen in the first pipe 13, the first air supply pipe 22 and the second air supply pipe 23. Then the discharge pipe 14 is opened, and the resin enters the discharge pipe 14 and the first pipe 13 in sequence and enters the cleaning tank 21. When the resin in the reaction tank 11 is When the pressure drops to a preset value, the first nitrogen pipeline 12 is opened to introduce nitrogen into the reaction tank 11 until the pressure in the reaction tank 11 reaches the preset value, and the first nitrogen pipeline 12 is closed. When the discharge pipeline 14 is blocked, the fourth valve 154 is closed and the opening of the third valve 153 is increased to allow nitrogen to enter the reaction tank 11 through the first pipeline 13 and the discharge pipeline 14. The nitrogen purges the discharge pipeline 14, thereby achieving the technical effect of unblocking the discharge pipeline 14. During the cleaning process, the cleaning tank 21 generates acidic gas, which floats up. At this time, the spray component 24 is opened to spray the acidic gas and neutralize the acidic gas, thereby achieving the effect of neutralizing the acidic gas, thereby achieving the technical effect of reducing environmental pollution.

[0034] Furthermore, the cleaning component also includes a fifth valve 155, a sixth valve 156 and a seventh valve 157. The fifth valve 155 is arranged on the first air supply pipe 22, the sixth valve 156 is arranged on the second air supply pipe 23, and the seventh valve 157 is arranged on the first pipe 13. In addition, the seventh valve 157 and the third valve 153 are located on both sides of the first air supply pipe 22. In this embodiment, the cleaning component is further defined. The fifth valve 155 controls the opening or closing of the first air supply pipe 22, the sixth valve 156 controls the opening or closing of the second air supply pipe 23, and the seventh valve 157 is arranged on the first pipe 13. In addition, the seventh valve 157 and the third valve 153 are located on both sides of the first air supply pipe 22. The cleaning tank 21 includes a tank body 211, a feed pipe 212 and an air intake pipe 213. One end of the feed pipe 212 is connected to the first pipe 13, and the other end extends into the tank body 211. One end of the air intake pipe 213 is connected to the second air supply pipe 23, and the other end extends into the bottom of the tank body 211. The resin enters the cleaning tank 21 through the discharge pipe 14, the first pipe 13 and the feed pipe 212 in sequence. When the cleaning tank 2 1 when the resin reaction is insufficient, the sixth valve 156 is opened to allow nitrogen to enter the air intake pipe 213 from the second air supply pipe 23, thereby increasing the air filling volume of the cleaning tank 21, thereby achieving the effect of improving the reaction effect. Optionally, a discharge port 214 is also provided at the lower portion of the cleaning tank 21 for quickly discharging water and resin materials. Optionally, the air intake pipe 213 is spirally wound around the bottom of the tank body 211, and a plurality of exhaust holes 2131 are provided on the air intake pipe 213. The air intake pipe 213 enters the cleaning tank 21 through the plurality of exhaust holes 2131, thereby achieving the technical effect of increasing the exhaust volume. In addition, the air intake pipe 213 is spirally wound around the bottom of the tank body 211, so that the nitrogen can be more evenly distributed in the cleaning tank 21, thereby further achieving the technical effect of increasing the exhaust volume.

[0035] Furthermore, the spray component 24 includes a pump body 241, a spray pipe 242, a spray head 244, and a liquid supply pipe 243. One end of the spray pipe 242 is connected to the pump body 241, and the other end extends into the tank body 211 and is connected to the spray head 244. The liquid supply pipe 243 also has one end connected to the pump body 241 and the other end extending into the tank body 211. In this embodiment, the spray component 24 is further defined. A first air inlet pipe 213 is connected to the pump body 241. The pump body 241 utilizes a pneumatic diaphragm pump. The first air inlet pipe 213 pneumatically operates the pump body 241 by supplying nitrogen to the pump body 241. When the pump body 241 is operating, water in the tank body 211 is transported through the liquid supply pipe 243 and the spray pipe 242 to the spray head 244. The spray head 244 sprays water into the tank body 211, thereby achieving the technical effect of neutralizing acidic gases.

[0036] On the other hand, Figure 4As shown, an embodiment of the present invention further provides a method for discharging an anti-disproportionated resin, the method comprising the following steps:

[0037] Nitrogen is introduced into the first nitrogen pipeline, the first pipeline, the first air supply pipeline and the second air supply pipeline respectively to replace the air in the pipelines and the reaction tank;

[0038] Open the discharge pipe and pass the resin in the reaction tank into the cleaning tank;

[0039] Turn on the pump to deliver water from the cleaning tank to the spray head to neutralize the generated acidic gas.

[0040] In the present technical solution, nitrogen is respectively introduced into the first nitrogen pipeline, the first pipeline, the first air supply pipeline and the second air supply pipeline to replace the air in the pipelines and the reaction tank, so that nitrogen is always maintained in the pipelines. Then, the discharge pipeline is opened, and the resin in the reaction tank is introduced into the cleaning tank. The water in the cleaning tank reacts with the chlorosilane in the resin to generate acidic gas. Then, the pump body is turned on to transport the water in the cleaning tank to the spray head to neutralize the generated acidic gas, thereby achieving the effect of absorbing and neutralizing the acidic gas, and further achieving the technical effect of preventing the acidic gas from polluting the air.

[0041] Example 1

[0042] 101. Open the first nitrogen pipeline to replace the air in the reaction tank to maintain positive pressure in the reaction tank, and close the first nitrogen pipeline.

[0043] The reaction tank is loaded with resin containing chlorosilane, and nitrogen is transported into the reaction tank through the first nitrogen pipeline to increase the pressure in the reaction tank and maintain the pressure in the reaction tank at a positive pressure. Then, the first nitrogen pipeline is closed to facilitate the discharge of the resin in the reaction tank.

[0044] 102. Open the first pipeline, the first air supply pipeline, and the second air supply pipeline to replace the air in the pipelines.

[0045] Before unloading, the first pipeline, the first air supply pipeline and the second air supply pipeline are opened to replace the air in the pipelines and discharge the air in the pipelines to prevent the air in the pipelines from reacting with the chlorosilane in the resin, thereby improving safety.

[0046] 103. Open the discharge pipe and pass the resin in the reaction tank into the cleaning tank.

[0047] The discharge pipe is opened, and the resin enters the cleaning tank through the discharge pipe and the first pipe in sequence, and the resin is cleaned.

[0048] 104. Open the pump to deliver the water in the cleaning tank to the spray head to neutralize the generated acidic gas.

[0049] During the cleaning process, the cleaning tank will produce acidic gas, which will float up and be discharged from the cleaning tank. At this time, the pump body is turned on to transport the water in the cleaning tank to the spray head through the pump body. The spray head sprays and neutralizes the acidic gas to prevent the acidic gas from being discharged from the cleaning tank.

[0050] 105. When the discharge pipe is blocked, close the fourth valve, increase the opening of the third valve, and perform backflush operation on the discharge pipe.

[0051] When the discharge pipe is blocked, close the fourth valve and increase the opening of the third valve to allow nitrogen to enter the reaction tank through the first pipe and the discharge pipe. The nitrogen purges the discharge pipe to make it unobstructed. Then reduce the opening of the third valve and open the fourth valve. The resin continues to enter the cleaning tank through the discharge pipe and the first pipe.

[0052] 106. When the pressure in the reaction tank is lower than the preset value, the first nitrogen pipeline is opened to make the pressure in the reaction tank reach the preset value, and the first nitrogen pipeline is closed.

[0053] During the process of discharging the resin, the pressure in the reaction tank decreases as the material in the reaction tank decreases. When the pressure in the reaction tank is lower than the preset value, the first nitrogen pipeline is opened and nitrogen enters the reaction tank, causing the pressure in the reaction tank to rise. Until the pressure reaches the preset value, the first nitrogen pipeline is closed.

[0054] In this technical solution, nitrogen is passed through the reaction component and the cleaning component to replace the air in the reaction component and the cleaning component, and then the discharge pipe is opened to pass the resin into the cleaning tank. When the discharge pipe is blocked, the connection between the first pipe and the cleaning tank is closed, and the nitrogen pressure in the first pipe is increased at the same time, so that the nitrogen backflushes the discharge pipe, thereby achieving the technical effect of quickly and effectively unblocking the discharge pipe. The reaction in the cleaning tank will produce acidic gas. The first air supply pipe supplies air to the spray component to provide a power source, driving the spray component to spray water into the cleaning tank to neutralize the acidic gas, thereby achieving the effect of absorbing and neutralizing the acidic gas, and further achieving the technical effect of preventing acidic gas from polluting the air.

[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A method for discharging a deproportionated resin, characterized in that: include: A discharging device for the anti-disproportionated resin is used, the discharging device comprising: A reaction component, comprising a reaction tank, a first nitrogen pipeline, a first pipeline, and a discharge pipeline, wherein the first nitrogen pipeline is connected to the top of the reaction tank, and one end of the discharge pipeline is connected to the middle of the first pipeline. The reaction component further comprises a first valve, a second valve, a third valve, and a fourth valve, wherein the first valve is arranged on the first nitrogen pipeline, the second valve is arranged on the discharge pipeline, the third valve and the fourth valve are arranged on the first pipeline, and the third valve and the fourth valve are located on both sides of the discharge pipeline; A cleaning component, the cleaning component comprising a cleaning tank, a first air supply pipe, a second air supply pipe and a spray component, one end of the first pipe is connected to the cleaning tank, one end of the first air supply pipe is connected to the first pipe, and the other end is connected to the spray component, one end of the second air supply pipe is connected to the first air supply pipe, and the other end is connected to the cleaning tank, and the spray component is arranged on the upper part of the cleaning tank; The discharging method comprises the following steps: Nitrogen is introduced into the first nitrogen pipeline, the first pipeline, the first air supply pipeline and the second air supply pipeline respectively to replace the air in the pipelines and the reaction tank; Open the discharge pipe and pass the resin in the reaction tank into the cleaning tank; Turn on the pump to deliver water from the cleaning tank to the spray head to neutralize the generated acidic gas; When the discharge pipeline is blocked, close the fourth valve, increase the opening of the third valve, and perform backflushing on the discharge pipeline. When the pressure in the reaction tank is lower than the preset value, open the first nitrogen pipeline to make the pressure in the reaction tank reach the preset value, and then close the first nitrogen pipeline.

2. The unloading method according to claim 1, characterized in that: The cleaning component also includes a fifth valve, a sixth valve and a seventh valve, the fifth valve is arranged on the first air supply pipeline, the sixth valve is arranged on the second air supply pipeline, the seventh valve is arranged on the first pipeline, and the seventh valve and the third valve are located on both sides of the first air supply pipeline.

3. The unloading method according to claim 2, characterized in that: The cleaning tank includes a tank body, a feed pipe and an air intake pipe, one end of the feed pipe is connected to the first pipe and the other end extends into the tank body, one end of the air intake pipe is connected to the second air supply pipe and the other end extends into the bottom of the tank body.

4. The unloading method according to claim 3, characterized in that: The air intake pipe is spirally wound around the bottom of the tank body, and a plurality of exhaust holes are arranged on the air intake pipe.

5. The unloading method according to claim 3, characterized in that: The spray component includes a pump body, a spray pipe, a spray head and a liquid supply pipe. One end of the spray pipe is connected to the pump body, and the other end extends into the tank body and connected to the spray head. One end of the liquid supply pipe is connected to the pump body, and the other end extends into the tank body.

6. The unloading method according to claim 1, characterized in that: The step of introducing nitrogen into the first nitrogen pipeline, the first pipeline, the first air supply pipeline, and the second air supply pipeline to replace the air in the pipelines and the reaction tank comprises: Open the first nitrogen pipeline to replace the air in the reaction tank to maintain positive pressure in the reaction tank, and close the first nitrogen pipeline; Open the first pipeline, the first air supply pipeline and the second air supply pipeline to replace the air in the pipelines.

Images