Novel ice particle rust removal method and device

Abstract

The invention relates to the technical field of ship rust removal, in particular to a novel ice particle rust removal method and device.Ni powder is added into a mixing bin, the Ni powder and water are evenly mixed through a magnetic field coil wound outside the mixing bin, Ni-containing water is conveyed to an ice particle preparation bin through a high-pressure water pump, the Ni-containing water is atomized and sprayed out through an atomizing nozzle, and the Ni powder in the atomized water is sprayed out through a spraying nozzle; meanwhile, the high-pressure liquid nitrogen bin synchronously sends atomized liquid nitrogen to the ice particle preparation bin, ice particles are connected to the spray gun through an ice particle inlet pipe, high-pressure gas enters the mixing bin through a pressure valve and is evenly sprayed out through a spray gun nozzle, and the spray gun sprays out the ice particles through a magnetic field and pneumatic assistance. By adding Ni powder into atomized water in the ice particle preparation bin, the ice making efficiency is improved, meanwhile, Ni powder micro ice particles provide magnetism, pneumatic pressurization is combined with a magnetic field to accelerate spraying, due to the magnetism of the ice particles, the ice particles can be recycled through the magnetic field, Ni powder and part of water are repeatedly utilized, and the multiple problems of ice making, blocking prevention, recycling and the like are solved at a time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship rust removal, in particular to a novel ice particle rust removal method and device. BACKGROUND

[0002] Ships run in harsh marine environments for a long time, and their hulls and decks will be corroded by various factors. Traditional metal surface rust removal techniques mainly include sand blasting and ultra-high pressure water rust removal, but both have significant defects. Ice particle blasting rust removal technology is proposed as an environmentally friendly alternative. The principle is to use the hardness characteristics of low-temperature ice particles to impact metal surfaces by compressed air to achieve pollution-free rust removal.

[0003] In the prior art, a patent with publication number CN118960275B discloses a fast ice making device and ice particle blasting rust removal system, which includes a supercooled water preparation system, an ice making system and a control system. The ice making system includes a first high-pressure gas tank, a first branch pipe for passing high-pressure gas in the first high-pressure gas tank into the inner cavity of the heat exchanger, an ice making bin arranged below the heat exchanger, a water delivery pipe with one end communicating with the bottom of the heat exchanger and the other end connected to the atomizing nozzle on the ice making bin, and a second branch pipe connecting the ice making bin bottom with the ice falling port of the first high-pressure gas tank. A coil for generating an external magnetic field in the ice making bin is arranged on the ice making bin.

[0004] The above structure uses a magnetic field to accelerate the nucleation of pure water supercooled water to produce impurity-free ice particles, but it cannot solve the problems of ice making, clogging prevention, recycling and complex process during the overall ice making and rust removal process. SUMMARY

[0005] Therefore, the present application aims to provide a novel ice particle rust removal method and device to solve the problems of ice making, clogging prevention, recycling and complex process during the overall ice making and rust removal process.

[0006] To achieve the above purpose, the present application provides a novel ice particle rust removal method and device, which includes a high-pressure liquid nitrogen bin and a Ni-containing water mixing bin. Both the high-pressure liquid nitrogen bin and the Ni-containing water mixing bin are connected to an ice particle preparation bin through a pipeline. A liquid nitrogen flow valve is arranged in the pipeline between the high-pressure liquid nitrogen bin and the ice particle preparation bin. Multiple groups of liquid nitrogen atomizing nozzles are arranged on both sides of the end of the high-pressure liquid nitrogen bin, and the end of the high-pressure liquid nitrogen bin extends into the interior of the ice particle preparation bin. The inside of the Ni-containing water mixing bin is provided with a magnetic field coil, and the pipeline between the Ni-containing water mixing bin and the ice particle preparation bin is provided with a Ni-containing water flow valve. The end of the Ni-containing water mixing bin is provided with a Ni-containing water atomizing nozzle, which is located in the inside top wall of the ice particle preparation bin. The outside of the Ni-containing water mixing bin is connected with a recovery liquefaction bin through a pipeline. The pipeline between the recovery liquefaction bin and the Ni-containing water mixing bin is provided with a filter valve. The outside of the ice particle preparation bin is fixedly connected with an ice particle inlet pipe, and the end of the ice particle inlet pipe is connected with a spray gun. The inside of the spray gun is provided with a mixing bin connected with the ice particle inlet pipe. One side of the mixing bin is connected with a pneumatic pressure valve, and the other side of the mixing bin is communicated with the outlet of the spray gun. The outside of the outlet of the mixing bin is provided with a magnetic field coil, and the outside of the mixing bin is provided with a permanent magnet. The novel ice particle rust removal method further comprises the following steps: S101, adding Ni powder into the Ni-containing water mixing bin, and mixing the Ni powder and water uniformly through the magnetic field coil wound outside the Ni-containing water mixing bin; S102, sending the Ni-containing water to the ice particle preparation bin through a high-pressure water pump, and atomizing and spraying the Ni-containing water through a Ni-containing water atomizing nozzle to atomize the Ni powder in the water; S103, simultaneously sending the atomized liquid nitrogen to the ice particle preparation bin through a pressure reduction flow valve of a high-pressure liquid nitrogen bin, and spraying the liquid nitrogen through a liquid nitrogen atomizing nozzle to prepare ice particles through a T-shaped settling device; S104, controlling the liquid nitrogen flow valve and the Ni-containing water flow valve through a computer to change the flow according to the required operation to prepare ice particles with the required diameter; S105, connecting the ice particles to the spray gun through the ice particle inlet pipe, and allowing the high-pressure gas to enter the mixing bin through the pressure valve to prevent the ice particles from adhering to each other, and uniformly spraying the ice particles through the spray gun nozzle. The outside of the spray gun is wound with an electromagnetic field coil, and the ice particles are sprayed through the magnetic field and pneumatic assistance; S106, after the ice particles act on the ship rust removal, the mixture sprayed out is adsorbed and recovered by the permanent magnet on the spray gun for drying. After the Ni powder is recovered, it enters the recovery liquefaction bin for heating and liquefaction, and is supplemented to the Ni-containing water mixing bin through the filter valve.

[0007] Preferably, the magnetic field strength in step 101 is 0.2T-0.3T, the particle size of the Ni powder in the Ni-containing water mixing bin is 50μm-150μm, and the magnetic field strength in step 105 is 1.5T-2.0T.

[0008] Preferably, the Ni-containing water atomizing nozzle and the liquid nitrogen atomizing nozzle are combined into a T-shaped structure, and the liquid nitrogen atomizing nozzles are staggered distributed outside the high-pressure liquid nitrogen bin pipeline.

[0009] Preferably, the outlet of the spray gun is in a conical structure, and the magnetic field coil is distributed outside the conical outlet.

[0010] Preferably, a scraper is slidingly mounted outside the spray gun, and the scraper corresponds to the permanent magnet.

[0011] Preferably, a high-pressure water pump is arranged inside the high-pressure liquid nitrogen bin and the Ni-containing water atomizing nozzle.

[0012] Advantages of the present application: By adding Ni powder to the atomized water in the ice particle preparation bin, the Ni powder is mixed with water as a condensation nucleus and a magnetic medium to manufacture composite ice particles with magnetism, improve the ice making efficiency, and the Ni powder micro ice particles provide magnetism, which is accelerated by pneumatic pressurization combined with a magnetic field and sprayed out, simplifying the ice spraying process and improving the ice spraying efficiency. At the same time, due to the magnetism of the ice particles, the ice particles can be recycled by a magnetic field, and the Ni powder and part of the water can be reused, simplifying the recycling process and solving multiple problems such as ice making, anti-blocking and recycling. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only a part of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the internal structure of the spray gun of the present application; Figure 3 It is a work flow chart of the method of the present application.

[0015] In the figure, 1 is a high-pressure liquid nitrogen bin, 2 is a liquid nitrogen flow valve, 3 is an ice particle preparation bin, 4 is a Ni-containing water atomizing nozzle, 5 is a liquid nitrogen atomizing nozzle, 6 is a Ni-containing water flow valve, 7 is a Ni-containing water mixing bin, 8 is a magnetic field coil, 9 is a filter valve, 10 is a recycling liquefaction bin, 11 is a pneumatic pressure valve, 12 is a mixing bin, 13 is an ice particle inlet pipe, 14 is a magnetic field coil, 15 is a spray gun, 16 is a permanent magnet, and 17 is a scraper. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present application more clear and explicit, the following will further describe the present application in combination with specific embodiments.

[0017] As Figure 1 , Figure 2 , Figure 3As shown, a new ice particle rust removal method includes a high-pressure liquid nitrogen bin 1 and a Ni-containing water mixing bin 7, and the high-pressure liquid nitrogen bin 1 and the Ni-containing water mixing bin 7 are both connected with an ice particle preparation bin 3 through a pipeline, a liquid nitrogen flow valve 2 is arranged on the pipeline between the high-pressure liquid nitrogen bin 1 and the ice particle preparation bin 3, and a plurality of groups of liquid nitrogen atomizing nozzles 5 are arranged on both sides of the end of the high-pressure liquid nitrogen bin 1, and the end of the high-pressure liquid nitrogen bin 1 extends to the inside of the ice particle preparation bin 3. A magnetic field coil 8 is arranged in the inside of the Ni-containing water mixing bin 7, a Ni-containing water flow valve 6 is arranged on the pipeline between the Ni-containing water mixing bin 7 and the ice particle preparation bin 3, a Ni-containing water atomizing nozzle 4 is arranged at the end of the Ni-containing water mixing bin 7, the Ni-containing water atomizing nozzle 4 is located on the inside top wall of the ice particle preparation bin 3, and a recovery liquefaction bin 10 is connected to the outside of the Ni-containing water mixing bin 7 through a pipeline, and a filter valve 9 is arranged on the pipeline between the recovery liquefaction bin 10 and the Ni-containing water mixing bin 7. An ice particle inlet pipe 13 is fixedly connected to the outside of the ice particle preparation bin 3, and a spray gun 15 is connected to the end of the ice particle inlet pipe 13. A mixing bin 12 is arranged in the inside of the spray gun 15 and connected with the ice particle inlet pipe 13, a pneumatic pressure valve 11 is connected to one side of the mixing bin 12, the other side of the mixing bin 12 is communicated with the outlet of the spray gun 15, an electromagnetic field coil 14 is arranged outside the outlet of the mixing bin 12, and a permanent magnet 16 is arranged outside the mixing bin 12.

[0018] In this embodiment, the Ni powder is added to the atomized water in the ice particle preparation bin 3, the Ni powder is mixed with water as a condensation nucleus and a magnetic medium, the composite ice particle with magnetism is manufactured, the efficiency of ice making is improved, the magnetic Ni powder micro ice particle provides magnetism, the spray ice process is simplified, the spray ice efficiency is improved, the ice particles can be recycled through the magnetic field due to the magnetism of the ice particles, the Ni powder and part of the water can be recycled, the recovery process is simplified, and multiple problems such as ice making, anti-blocking and recycling are solved at one time.

[0019] As an embodiment, as shown in the figure, Figure 1 As shown, the Ni-containing water atomizing nozzle 4 and the liquid nitrogen atomizing nozzle 5 are combined into a T-shaped structure, and the liquid nitrogen atomizing nozzles 5 are staggered distributed outside the pipeline of the high-pressure liquid nitrogen bin 1.

[0020] In this embodiment, the Ni powder is mixed with water as a condensation nucleus and a magnetic medium, the composite ice particle with magnetism is manufactured, when the ice particle containing the Ni powder enters a non-uniform magnetic field, the particle is magnetized to become a small magnet, and the ice particle is prepared in the ice particle preparation bin 3 through T-shaped sedimentation.

[0021] As an embodiment, as shown in the figure, Figure 1 , Figure 2As shown, the outlet of the spray gun 15 is conical, and the electromagnetic field coil 14 is distributed outside the conical outlet, and the magnetic field is designed to have a strong gradient in the spray direction inside the spray gun 15, and the magnetic field is strongest near the outlet of the spray gun 15.

[0022] In this embodiment, the ice particles are connected to the spray gun 15 through the ice particle inlet pipe 13, and the high-pressure gas enters the mixing chamber 12 through the pressure valve, so that the ice particles are no longer adhered to each other, and are uniformly sprayed out through the nozzle of the spray gun 15. The electromagnetic field coil 14 is wound outside the spray gun 15, and the ice particles are sprayed out through the magnetic field and pneumatic assistance. The high-pressure gas enters the mixing chamber 12 through the pneumatic pressure valve 11, providing the ice particles with the main kinetic energy to move forward and separate from each other. At the same time, the electromagnetic field coil 14 is energized to generate a strong, forward-directed magnetic field gradient, so that the ice particles have a higher outlet speed than pure pneumatic spraying, and the entire conveying and spraying system relies on the magnetic field generated by the magnetic field coil 8 and the electromagnetic field coil 14 to keep the magnetic ice particles in a suspended and dispersed state, fundamentally avoiding adhesion.

[0023] As an embodiment, as shown in Figure 2 As shown, the scraper 17 is slidingly installed outside the spray gun 15, and the scraper 17 corresponds to the permanent magnet 16.

[0024] In this embodiment, the water, fine impurities and Ni powder in the mixture are connected to the permanent magnet 16 outside the spray gun 15, and when the magnetic field region outside the spray gun 15 is aligned with the mixture, the broken ice particles still contain Ni powder, and the contained Ni powder will be captured by the magnetic field and adsorbed on the surface of the permanent magnet 16, while the water and non-magnetic impurities are not affected. By using the magnetism of the ice particles, the Ni powder can be recovered by magnet adsorption, and the Ni powder can be recovered by moving the scraper 17, and after filtration, it can be re-injected into the cycle, greatly reducing the material consumption and cost.

[0025] As an embodiment, as shown in Figure 1 As shown, the high-pressure liquid nitrogen chamber 1 and the Ni-containing water atomizing nozzle 4 are both provided with high-pressure water pumps.

[0026] In this embodiment, the Ni-containing water is sent to the ice particle preparation chamber 3 through the high-pressure water pump, and the Ni-containing water is atomized and sprayed out through the Ni-containing water atomizing nozzle 4. The Ni powder in the atomized water is sprayed out through the liquid nitrogen atomizing nozzle 5 at the same time, and the atomized liquid nitrogen is sent to the ice particle preparation chamber 3 through the high-pressure water pump and the pressure reducing flow valve at the same time. The ice particles are prepared through the T-shaped settling, avoiding the instability of the supercooled water, and the ice making efficiency is higher.

[0027] The present application also provides a new ice particle rust removal method, as shown in Figure 3 As shown, the method further comprises the following steps: S101, add Ni powder in the Ni-containing water mixing bin 7, mix the Ni powder and water uniformly through the magnetic field coil 8 wound outside the Ni-containing water mixing bin 7; S102, send the Ni-containing water to the ice particle preparation bin 3 through the high-pressure water pump, and spray the Ni-containing water mist through the Ni-containing water atomizing nozzle 4, so that the Ni powder in the atomized water is sprayed out; S103, at the same time, the high-pressure liquid nitrogen bin 1 synchronously sends the atomized liquid nitrogen to the ice particle preparation bin 3 through the pressure reducing flow valve, and the liquid nitrogen is sprayed out through the liquid nitrogen atomizing nozzle 5, and the ice particles are prepared through the T-shaped settling; S104, the liquid nitrogen flow valve 2 and the Ni-containing water flow valve 6 are controlled by a computer, and the required ice particle diameter is prepared according to the required operation by changing the flow; S105, the ice particles are connected to the spray gun 15 through the ice particle inlet pipe 13, the high-pressure gas enters the mixing bin 12 through the pressure valve, so that the ice particles are not adhered to each other, and are uniformly sprayed out through the nozzle of the spray gun 15, the electromagnetic field coil 14 is wound outside the spray gun 15, and the ice particles are sprayed out through the magnetic field and pneumatic assistance; S106, after the ice particles act on the ship rust removal, the mixture sprayed out is adsorbed by the permanent magnet 16 on the spray gun 15 for recycling and drying, the Ni powder is recycled and enters the recycling liquefaction bin 10 for heating and liquefaction, and is supplemented to the Ni-containing water mixing bin 7 through the filter valve 9.

[0028] In the above steps, the magnetic field strength in step 101 is 0.2T-0.3T, the particle size of the Ni powder in the Ni-containing water mixing bin 7 is 50-150μm, and the magnetic field strength in step 105 is 1.5T-2.0T.

[0029] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of the present application (including claims) to these examples; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details.

[0030] The present application is intended to cover all such alternatives, modifications and variations falling within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A novel ice particle rust removal method, applied to a novel ice particle rust removal device, comprising a high-pressure liquid nitrogen chamber (1) and a Ni-containing water mixing chamber (7), characterized in that, The high-pressure liquid nitrogen chamber (1) and the Ni-containing water mixing chamber (7) are both connected to the ice particle preparation chamber (3) through pipes. The pipe between the high-pressure liquid nitrogen chamber (1) and the ice particle preparation chamber (3) is equipped with a liquid nitrogen flow valve (2). Multiple sets of liquid nitrogen atomizing nozzles (5) are respectively installed on both sides of the end of the high-pressure liquid nitrogen chamber (1). The end of the high-pressure liquid nitrogen chamber (1) extends into the interior of the ice particle preparation chamber (3). The interior of the Ni-containing water mixing chamber (7) is equipped with a magnetic field coil (8), and the pipeline between the Ni-containing water mixing chamber (7) and the ice particle preparation chamber (3) is equipped with a Ni-containing water flow valve (6). The end of the Ni-containing water mixing chamber (7) is equipped with a Ni-containing water atomizing nozzle (4), which is located on the inner top wall of the ice particle preparation chamber (3). The exterior of the Ni-containing water mixing chamber (7) is connected to a recovery liquefaction chamber (10) through a pipeline, and the pipeline between the recovery liquefaction chamber (10) and the Ni-containing water mixing chamber (7) is equipped with a filter valve (9). An ice particle inlet pipe (13) is fixedly connected to the outside of the ice particle preparation chamber (3), and a spray gun (15) is connected to the end of the ice particle inlet pipe (13). The spray gun (15) is equipped with a mixing chamber (12) connected to the ice particle inlet pipe (13). A pneumatic pressure valve (11) is connected to one side of the mixing chamber (12), and the other side of the mixing chamber (12) is connected to the outlet of the spray gun (15). An electromagnetic field coil (14) is provided outside the outlet of the mixing chamber (12), and a permanent magnet (16) is provided outside the mixing chamber (12). The novel ice particle rust removal method further includes the following steps: S101. Ni powder is added to the Ni-containing water mixing chamber (7), and the Ni powder and water are mixed evenly through the magnetic field coil (8) wound around the outside of the Ni-containing water mixing chamber (7). S102. Ni-containing water is sent to the ice particle preparation chamber (3) by a high-pressure water pump, and Ni-containing water is atomized and sprayed out through a Ni-containing water atomizing nozzle (4) to atomize Ni powder in the water; S103. At the same time, the high-pressure liquid nitrogen chamber (1) sends the atomized liquid nitrogen to the ice particle preparation chamber (3) through the pressure reducing flow valve. The liquid nitrogen is sprayed out by the liquid nitrogen atomizing nozzle (5) and ice particles are prepared by T-shaped sedimentation. S104, liquid nitrogen flow valve (2) and Ni-containing water flow valve (6) are controlled by computer to change the flow rate and ice particle diameter required for preparation according to the needs of the operation; S105. Ice particles are connected to the spray gun (15) through the ice particle inlet pipe (13). High-pressure gas enters the mixing chamber (12) through the pressure valve, so that the ice particles no longer stick together. They are sprayed out evenly through the nozzle of the spray gun (15). An electromagnetic field coil (14) is wrapped around the outside of the spray gun (15). The ice particles are sprayed out with the help of magnetic field and pneumatics. S106. After the ice particles are applied to the ship for rust removal, the mixture after spraying is adsorbed by the permanent magnet (16) on the spray gun (15) for recycling and drying. After the Ni powder is recycled, it enters the recycling liquefaction chamber (10) for heating and liquefaction. It is then replenished to the Ni-containing water mixing chamber (7) through the filter valve (9).

2. The novel ice pellet rust removal device according to claim 1, characterized in that, The magnetic field strength in step 101 is 0.2T~0.3T, the particle size of Ni powder in the Ni-water mixing chamber (7) is 50μm~150μm, and the magnetic field strength in step 105 is 1.5T~2.0T.

3. The novel ice pellet rust removal device according to claim 1, characterized in that, The Ni-containing water atomizing nozzle (4) and the liquid nitrogen atomizing nozzle (5) are combined into a T-shaped structure, and the liquid nitrogen atomizing nozzle (5) is staggered on the outside of the high-pressure liquid nitrogen tank (1) pipeline.

4. The novel ice pellet rust removal device according to claim 1, characterized in that, The nozzle (15) has a conical outlet, and the magnetic field coil (14) is located outside the conical outlet.

5. The novel ice pellet rust removal device according to claim 1, characterized in that, A scraper (17) is slidably mounted on the outside of the spray gun (15), and the scraper (17) corresponds to the permanent magnet (16).

6. The novel ice pellet rust removal device according to claim 1, characterized in that, Both the high-pressure liquid nitrogen chamber (1) and the Ni-containing water atomizing nozzle (4) are equipped with high-pressure water pumps.

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