Ultrahigh-pressure pulse descaling system of high-pressure reaction kettle

Abstract

The ultrahigh-pressure pulse descaling system comprises a kettle body and a cleaning device, the kettle body is provided with a cleaning opening capable of being closed, the cleaning device comprises a water pump, a pipeline, a sprayer and a plugging device, the water pump is communicated with the sprayer through the pipeline, the pipeline penetrates through the cleaning opening so that the sprayer can stretch into the kettle body, and the plugging device is arranged in the kettle body. The sprayer is provided with a plurality of water outlet holes and is rotationally connected with the pipeline, the water pump conveys a descaling agent into the sprayer through the pipeline, the sprayer can rotate under the action of the descaling agent, and the plugging device is arranged on the pipeline and used for plugging the cleaning opening. Compared with the prior art, the ultrahigh-pressure pulse descaling system of the high-pressure reaction kettle provided by the invention has the advantages that the water pump is used for pushing the descaling agent to flow at a high speed so as to push the sprayer to rotate, and meanwhile, the descaling agent is sprayed from the sprayer, sprayed in all directions in the high-pressure reaction kettle and uniformly covers scale at all positions of the inner wall; and a blind area which is not sprayed by the descaling agent is eliminated, and the descaling operation effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-pressure reactor descaling, and particularly relates to a high-pressure reactor ultrahigh-pressure pulse descaling system. BACKGROUND

[0002] Currently, in the hydrometallurgical process of laterite nickel ore, ore slurry, sulfuric acid and steam are injected into a high-pressure reactor for smelting to extract nickel and cobalt in the laterite nickel ore. After the high-pressure reactor works, scale mainly formed by iron and aluminum is generated on the inner wall of the high-pressure reactor. When the scale accumulates too much, it needs to be cleaned.

[0003] The existing method is to remove the scale by adding a descaling agent and stirring. However, this method has poor effect. The reason is that the volume of the high-pressure reactor is huge, and the existing manual spraying method cannot fully spray the descaling agent, so that part of the scale cannot be contacted with the descaling agent and is difficult to be removed. SUMMARY

[0004] Therefore, it is necessary to provide a high-pressure reactor ultrahigh-pressure pulse descaling system to solve the technical problem that the descaling agent cannot be fully sprayed in the prior art.

[0005] The present application provides a high-pressure reactor ultrahigh-pressure pulse descaling system, which comprises a reactor body and a cleaning device. The reactor body has a closable cleaning port. The cleaning device comprises a water pump, a pipeline, a sprayer and a plugging device. The water pump is in communication with the sprayer through the pipeline. The pipeline passes through the cleaning port so that the sprayer extends into the reactor body. The sprayer has a plurality of water outlets and is rotatably connected with the pipeline. The water pump delivers the descaling agent to the sprayer through the pipeline. The sprayer can rotate under the action of the descaling agent. The plugging device is arranged on the pipeline to plug the cleaning port.

[0006] Further, the pipeline comprises a first pipe and a second pipe. The first pipe is in communication with the water pump and the plugging device. The second pipe is in communication with the plugging device and the sprayer.

[0007] Further, the first pipe is a flexible pipe, and the second pipe is a rigid pipe.

[0008] Further, the sprayer comprises a shell and a plurality of nozzles. The shell has an inner cavity. The nozzles are distributed on the outer surface of the shell, and the water outlets of the nozzles are in communication with the inner cavity. The pipeline is in communication with the inner cavity.

[0009] Further, the water outlets of at least part of the nozzles are arranged in the same direction of rotation, so that the descaling agent pushes the sprayer to rotate when sprayed from the water outlets.

[0010] Further, the sprayer further comprises a turbine arranged in the inner cavity. The turbine is fixedly connected with the shell. The pipeline is arranged towards the turbine. The descaling agent can impact the turbine to make the sprayer rotate.

[0011] Furthermore, the water pump is an ultra-high pressure pulse water pump.

[0012] Furthermore, the utility model also includes a scrubbing device, which includes a stirring mechanism and a brush. The stirring mechanism is arranged on the kettle body and is connected to the brush transmission to drive the brush to rotate so that the brush scrubs the inner wall of the kettle body.

[0013] Furthermore, the kettle body is provided with a closable manhole, and the brush is detachably connected to the stirring mechanism.

[0014] Furthermore, it also includes a plurality of partitions, which are built into the kettle body and fixedly connected to the kettle body, dividing the kettle body into a plurality of interconnected reaction chambers, and each reaction chamber is provided with at least one washing device and a cleaning port.

[0015] Compared with the existing technology, the ultra-high pressure pulse descaling system for high-pressure reactors provided by the present invention utilizes a water pump to drive the descaling agent to flow at high speed, thereby driving the sprayer to rotate. At the same time, the descaling agent is sprayed out from the sprayer and sprayed in all directions in the high-pressure reactor, evenly covering the scale on various parts of the inner wall, eliminating blind spots that are not sprayed by the descaling agent, and improving the effect of the descaling operation.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A schematic structural diagram of a preferred embodiment of an ultra-high pressure pulse descaling system for a high-pressure reactor provided by the present invention; Figure 2 for Figure 1 A schematic diagram of part of the structure of the cleaning device; Figure 3 for Figure 2 Cross-sectional view at point A; Figure 4 for Figure 2 A schematic structural diagram of another embodiment of the sprinkler. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0019] Please refer to Figures 1 to 4 The present application provides a high-pressure reactor super-high pressure pulse descaling system. The high-pressure reactor super-high pressure pulse descaling system can be applied to the descaling operation of the high-pressure reactor, and is used for uniformly and comprehensively spraying descaling in the high-pressure reactor to improve the descaling effect.

[0020] It should be noted that the high-pressure reactor super-high pressure pulse descaling system of the present application is used in but not limited to the high-pressure reactor, and can also be applied to other equipment that needs to be descaled. In the present application, only the application of the high-pressure reactor super-high pressure pulse descaling system to the high-pressure reactor for the hydrometallurgy of laterite nickel ore is taken as an example for description, and the principle of the application of the high-pressure reactor super-high pressure pulse descaling system to other equipment is substantially the same as that in the present application, and thus will not be described herein.

[0021] The high-pressure reactor super-high pressure pulse descaling system comprises a reactor body 1 and a cleaning device 2. The reactor body 1 has a closable cleaning port 11. In the normal production process, the cleaning port 11 is in a closed state, and in the descaling operation, the cleaning port 11 is opened.

[0022] The cleaning device 2 comprises a water pump 21, a pipeline 22, a sprayer 23 and a plugging device 24. The water pump 21 is in communication with the sprayer 23 through the pipeline 22. The water pump 21 is arranged outside the reactor body 1 and is connected with a descaling agent supply or storage device. The pipeline 22 penetrates through the cleaning port 11 so that the sprayer 23 extends into the reactor body 1. The sprayer 23 has a plurality of water outlets 231 and is rotatably connected with the pipeline 22. The water pump 21 delivers the descaling agent into the sprayer 23 through the pipeline 22, and the sprayer 23 can rotate under the action of the descaling agent. Since the descaling agent has strong corrosiveness, in order to avoid the descaling agent from splashing out of the cleaning port 11, the plugging device 24 is arranged on the pipeline 22 to plug the cleaning port 11.

[0023] The high-speed flow of the descaling agent is pushed by the water pump 21, which in turn pushes the sprayer 23 to rotate, and at the same time, the descaling agent is sprayed from the sprayer 23 to all directions in the high-pressure reactor, uniformly covering the scale on the inner wall everywhere, eliminating the blind area not sprayed by the descaling agent, and thus improving the effect of the descaling operation.

[0024] In some embodiments, the reactor body 1 extends outwardly to form the cleaning port 11 in a tubular structure, which is preferably arranged obliquely so that the pipeline 22 and the sprayer 23 obliquely extend into the reactor body 1. The cleaning port 11 is located at a suitable position on the reactor body 1, including but not limited to the top surface or the side surface, so that the sprayer 23 can extend into the reactor body 1 at a suitable position to comprehensively and uniformly spray the descaling agent.

[0025] In some embodiments, the water pump 21 is an ultra-high pressure pulse water pump. Ultra-high pressure means that the descaling agent is pressurized to more than 100 MPa, so that the descaling agent reaches a large enough speed and kinetic energy, the rotating speed of the sprayer 23 can reach the requirement, and the sprayed descaling agent can also overcome gravity and be sprayed everywhere on the inner wall of the kettle body 1. Pulse output of the descaling agent can also obtain better spraying effect.

[0026] In some embodiments, the pipeline 22 includes a first pipe 221 and a second pipe 222, the first pipe 221 is connected to the water pump 21 and the obturator 24, and the second pipe 222 is connected to the obturator 24 and the sprayer 23. The first pipe 221 is located outside the kettle body 1, and the second pipe 222 penetrates into the kettle body 1 through the cleaning port.

[0027] In preferred embodiments, the first pipe 221 is a flexible pipe to facilitate flexible arrangement of the water pump 21. The second pipe 222 is a hard pipe to connect and support the sprayer 23, so that the sprayer 23 is located at a suitable position in the kettle body 1.

[0028] Please refer to Figure 3 In some embodiments, the second pipe 222 is formed with a groove at one end close to the sprayer 23, the sprayer 23 is sleeved at the pipe opening of the second pipe 222, and correspondingly has a clamping block. The clamping block is clamped with the groove, and the clamping block can rotate freely in the groove. Thus, the sprayer 23 can rotate relative to the pipeline 22. In other embodiments, other rotating connection forms can also be used.

[0029] In some embodiments, the sprayer 23 includes a shell 232 and a plurality of nozzles 233, the shell 232 has an inner cavity, and the nozzles 233 are distributed on the outer surface of the shell 232 and the water outlet holes 231 of the nozzles 233 are connected to the inner cavity. The pipeline 22 is also connected to the inner cavity, and the descaling agent enters the inner cavity first and then is sprayed from each nozzle 233. The shell 232 can adopt a spherical or approximately spherical structure, and the nozzles 233 are uniformly distributed on the outer surface of the shell 232, so as to achieve the effect of spraying the descaling agent in all directions.

[0030] In some embodiments, the sprayer 23 further includes a turbine (not shown) built in the inner cavity, the turbine is fixedly connected with the shell 232, and the pipeline 22 is arranged towards the turbine. The descaling agent discharged from the pipeline 22 can impact the turbine to drive the sprayer 23 to rotate.

[0031] Please refer to Figure 4 In other embodiments, no turbine is arranged in the shell 232, but at least part of the water outlet holes 231 of the nozzles 233 are arranged in the same rotation direction, that is, arranged clockwise or counterclockwise, and the water outlet holes 231 of the other nozzles 233 are arranged radially without hindering the rotation of the sprayer 23. Thus, the descaling agent sprayed from the water outlet holes 231 can drive the sprayer 23 to rotate.

[0032] In some embodiments, a flange is arranged at the cleaning port 11, and the plugging device 24 is a corresponding flange, and the two are connected to plug the cleaning port 11. In other embodiments, the plugging device 24 is a sealing plug with elasticity, which is inserted into the cleaning port 11 to plug the cleaning port 11.

[0033] In some embodiments, the high-pressure reactor ultrahigh-pressure pulse descaling system further comprises a scrubbing device 3, which comprises a stirring mechanism 31 and a brush 32. The stirring mechanism 31 is arranged on the reactor body 1 and is in transmission connection with the brush 32 to drive the brush 32 to rotate. The end of the brush 32 is in contact with the inner wall of the reactor body 1. The stirring mechanism 31 drives the brush 32 to rotate to scrub the scale on the inner wall of the reactor body 1. The brush 32 is flexible and will not interfere with the cleaning device 2 when rotating.

[0034] In some embodiments, the reactor body 1 further has a closable manhole (not shown). The manhole is a hole for people to pass through and is generally used for workers to enter the reactor body 1 for maintenance. The brush 32 is detachably connected with the stirring mechanism 31. It is easy to understand that the high-pressure reactor generally has a stirring mechanism 31 for stirring sulfuric acid and ore pulp during production operation. During the descaling operation, the brush 32 can be installed on the stirring mechanism 31, and the stirring mechanism 31 drives the brush 32 to rotate for descaling. After the descaling is completed, the brush 32 is removed, and the stirring mechanism 31 continues to be used for production stirring.

[0035] In some embodiments, the high-pressure reactor ultrahigh-pressure pulse descaling system further comprises a plurality of partitions 4, which are arranged in the reactor body 1 and are fixedly connected with the reactor body 1 to divide the reactor body 1 into a plurality of reaction cavities in communication with each other. Each reaction cavity is arranged with at least one scrubbing device 3 and cleaning port 11, and each reaction cavity performs descaling operation respectively.

[0036] Compared with the prior art, the high-pressure reactor ultrahigh-pressure pulse descaling system provided by the present application utilizes the water pump to drive the descaling agent to flow at high speed, thereby driving the sprayer to rotate, and at the same time, the descaling agent is sprayed from the sprayer to be sprayed in all directions in the high-pressure reactor, uniformly covering the scale on the inner wall everywhere, eliminating the blind area not sprayed by the descaling agent, and improving the effect of the descaling operation.

[0037] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical range disclosed by the present application can be easily thought of by those skilled in the art, which should be covered within the protection scope of the present application.

Claims

1. An ultra-high pressure pulse descaling system for a high pressure reactor, characterized in that: It includes: A kettle body and a cleaning device, wherein the kettle body has a closable cleaning port, and the cleaning device includes a water pump, a pipeline, a sprayer, and a plug. The water pump is connected to the sprayer through the pipeline, and the pipeline passes through the cleaning port to allow the sprayer to extend into the kettle body. The sprayer has multiple water outlets and is rotatably connected to the pipeline. The water pump transports a descaling agent into the sprayer through the pipeline. The sprayer can rotate under the action of the descaling agent. The plug is provided on the pipeline to block the cleaning port.

2. The ultra-high pressure pulse descaling system for high pressure reactors according to claim 1, characterized in that: The pipeline includes a first pipe and a second pipe, the first pipe is connected to the water pump and the plug, and the second pipe is connected to the plug and the sprayer.

3. The ultra-high pressure pulse descaling system for high pressure reactor according to claim 2, characterized in that: The first tube is a soft tube, and the second tube is a hard tube.

4. The ultra-high pressure pulse descaling system for high pressure reactors according to claim 1, characterized in that: The sprayer includes a shell and a plurality of nozzles. The shell has an inner cavity. The nozzles are distributed on the outer surface of the shell, and the water outlet holes of the nozzles are connected to the inner cavity. The pipeline is connected to the inner cavity.

5. The ultra-high pressure pulse descaling system for high pressure reactors according to claim 4, characterized in that: The water outlet holes of at least part of the nozzles are arranged in the same rotation direction, so that the descaling agent pushes the sprayer to rotate when it is sprayed from the water outlet holes.

6. The ultra-high pressure pulse descaling system for high pressure reactors according to claim 4, characterized in that: The sprayer further comprises a turbine built into the inner cavity, the turbine is fixedly connected to the housing, the pipeline is arranged toward the turbine, and the descaling agent can impact the turbine to rotate the sprayer.

7. The ultra-high pressure pulse descaling system for high pressure reactor according to claim 1, characterized in that: The water pump is an ultra-high pressure pulse water pump.

8. The ultra-high pressure pulse descaling system for high pressure reactors according to claim 1, characterized in that: The kettle further comprises a scrubbing device, which comprises a stirring mechanism and a brush. The stirring mechanism is arranged on the kettle body and is in transmission connection with the brush to drive the brush to rotate so as to scrub the inner wall of the kettle body.

9. The ultra-high pressure pulse descaling system for high pressure reactors according to claim 8, characterized in that: The kettle body is further provided with a closable manhole, and the brush is detachably connected to the stirring mechanism.

10. The ultra-high pressure pulse descaling system for high pressure reactor according to claim 8, characterized in that: It also includes a plurality of partitions, which are built into the kettle body and fixedly connected to the kettle body, dividing the kettle body into a plurality of interconnected reaction chambers, and each reaction chamber is provided with at least one of the scrubbing device and the cleaning port.

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