Ultra-high pressure pulse system for autoclave descaling

Abstract

The invention relates to an ultra-high pressure pulse descaling system for an autoclave, comprising the autoclave body and the cleaning device, wherein the autoclave body has a closable cleaning port, and the cleaning device comprises a water pump, a pipeline, a sprayer and a blocking device. The water pump is connected to the sprayer through a pipeline, and the pipeline passes through the cleaning port to allow the sprayer to extend into the autoclave body. The sprayer has multiple water outlets and is rotatably connected to the pipeline. The water pump transports the descaling agent into the sprayer through the pipeline. The sprayer can rotate under the action of the descaling agent. The blocking device is arranged on the pipeline to block the cleaning port. Compared with the prior art, the ultra-high-pressure pulse descaling system for autoclaves provided by the present invention utilizes a water pump to drive the descaling agent to flow at a 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 autoclave, evenly covering the scale on the inner wall, eliminating the blind areas that are not sprayed by the descaling agent and improving the effect of the descaling operation.

Description

[0001] Description

[0002] ULTRA-HIGH PRESSURE PULSE SYSTEM FOR AUTOCLAVE DESCALING

[0003] Field Of Invention

[0004] The invention relates to the technical field of descaling of autoclaves , and in particular to an ultra-high-pressure pulse descaling system for autoclaves .

[0005] Background

[0006] In the current hydrometallurgical method of laterite nickel ore , slurry, sul furic acid and steam are usually inj ected into an autoclave to extract nickel and cobalt from the laterite nickel ore . After a long period of operation, scale mainly composed of iron and aluminum will form on the inner wall of the autoclave When the scale accumulates too much, it needs to be cleaned .

[0007] The prior art is to remove scale by adding a descaling agent and stirring, but this removal method is not very ef fective . The reason is that the volume of the autoclave is huge , and the existing manual spraying method is di f ficult to spray the descaling agent comprehensively, resulting in some scale not being exposed to the descaling agent and being di f ficult to remove .

[0008] Summary

[0009] In view of this , it is necessary to provide an ultra-high-pressure pulse descaling system for autoclaves to solve the technical problem of incomplete spraying of descaling agents in the prior art .

[0010] The present invention provides an ultra-high pressure pulse descaling system for an autoclave . The ultra-high pressure pulse descaling system for an autoclave comprises an autoclave body and a cleaning device . The autoclave body has a closable cleaning port , and the cleaning device includes a water pump, a pipeline , a sprayer and a blocking device . 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 autoclave body . The sprayer has multiple water outlet holes and is rotatably connected to the pipeline . The water pump transports the descaling agent into the sprayer through the pipeline . The sprayer can rotate under the action of the descaling agent , and the blocking device is arranged on the pipeline to block the cleaning port .

[0011] Furthermore , the pipeline includes a first pipe and a second pipe . The first pipe connects the water pump and the blocking device , and the second pipe connects the blocking device and the sprayer .

[0012] Furthermore , the first pipe is a soft pipe and the second pipe is a hard pipe .

[0013] Furthermore , the sprayer includes a housing and a plurality of noz zles , the housing has an inner cavity, the noz zles are distributed on the outer surface of the housing and the water outlet holes of the noz zles are connected to the inner cavity; the pipeline is connected to the inner cavity .

[0014] Furthermore , the sprayer also includes a turbine placed 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 drive the sprayer to rotate .

[0015] Furthermore , the water pump is an ultra-high pressure pulse water pump .

[0016] Furthermore , it also includes a scrubbing device , the scrubbing device includes a stirring mechanism and a brush, the stirring mechanism is arranged on the autoclave body and is transmission-connected to the brush to drive the brush to rotate , so that the brush scrubs the inner wall of the autoclave body .

[0017] Furthermore , the autoclave body also has a closable manhole , and the brush is detachably connected to the stirring mechanism .

[0018] Furthermore , it also includes a plurality of partitions , which are placed into the autoclave body and fixedly connected to the autoclave body . The autoclave body is divided into a plurality of interconnected reaction compartments , and each reaction compartment is provided with at least one of the scrubbing devices and the cleaning port .

[0019] Compared with the prior art , the ultra-high pressure pulse descaling system for a high-pressure reactor provided by the present invention utili zes a water pump to drive the descaling agent to flow at a 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 autoclave , evenly covering the scale on the inner wall , eliminating the blind areas that are not sprayed by the descaling agent and improving the ef fect of the descaling operation .

[0020] The above description is only an overview of the technical solution of the present invention . In order to make the technical solution of the present invention clearer and to implement it according to the contents of the claims , the preferred embodiments of the present invention and the corresponding drawings are described in detail as follows .

[0021] Brief Description Of The Drawings

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application . The illustrative 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 :

[0023] FIG . 1 is a schematic diagram of the structure of a preferred embodiment of the ultra-high pressure pulse descaling system for an autoclave provided by the present invention;

[0024] FIG . 2 is a schematic diagram of a portion of the structure of the cleaning device in FIG . 1 ;

[0025] FIG . 3 is a cross-sectional view at point A in Figure 2 ;

[0026] FIG . 4 is a schematic diagram of the structure of another embodiment of the sprayer in FIG . 2 .

[0027] Detailed Description Of Preferred Embodiments

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the drawings . The 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, but are not used to limit the scope of the present invention .

[0029] Referring to FIG . 1 to 4 , the present invention provides an ultra-high pressure pulse descaling system for an autoclave . The ultra-high pressure pulse descaling system for an autoclave can be applied to the descaling operation of the autoclave, and is used to spray descaling evenly and comprehensively in the autoclave to improve the descaling ef fect .

[0030] It should be noted that the ultra-high pressure pulse descaling system for autoclaves of the present invention is used for, but not limited to , autoclaves , and can also be applied to other equipment that requires descaling . In the present invention, only the application of the ultra-high pressure pulse descaling system for autoclaves in autoclaves for hydrometallurgical smelting of laterite nickel ore is taken as an example for explanation, and the principle of applying the ultra-high pressure pulse descal ing system for autoclaves to other equipment is essentially the same as the principle applied to this equipment , and will not be described in detail here .

[0031] The ultra-high pressure pulse descaling system for an autoclave comprises an autoclave body 1 and a cleaning device 2 . The autoclave body 1 has a closable cleaning port 11 . During normal production, the cleaning port 11 is in a closed state . During descaling operation, the cleaning port 11 is opened .

[0032] The cleaning device 2 includes a water pump 21 , a pipeline 22 , a sprayer 23 and a blocking device 24 . The water pump 21 is connected to the sprayer 23 through the pipeline 22 . The water pump 21 is placed outside the autoclave body 1 and connected to the descaling agent supply or storage device . The pipeline 22 passes through the cleaning port 11 so that the sprayer 23 extends into the autoclave body 1 .

[0033] The sprayer 23 has a plurality of water outlet holes 231 and is rotatably connected to the pipe 22 . The water pump 21 delivers the descaling agent to the sprayer 23 through the pipe 22 . The sprayer 23 can rotate under the action of the descaling agent . Since the descaling agent is highly corrosive , in order to prevent the descaling agent from splashing out from the cleaning port 11 , a blocking device 24 is provided on the pipe 22 to block the cleaning port 11 .

[0034] The descaling agent is driven to flow at high speed by the water pump 21 , thereby driving the sprayer 23 to rotate . At the same time, the descaling agent is sprayed out from the sprayer 23 , sprayed in all directions in the autoclave , evenly covering the scale on the inner wall , eliminating the blind areas that are not sprayed by the descaling agent and improving the ef fect of the descaling operation .

[0035] In some embodiments , the autoclave body 1 extends outward from a tubular structure to form a cleaning port 11 , and the tubular structure is preferably placed obliquely so that the pipe 22 and the sprayer 23 are obliquely extended into the autoclave body 1 . The cleaning port 11 is located at a suitable position on the autoclave body 1 , including but not limited to the top surface or the side surface , so that the sprayer 23 can be extended to a suitable position in the autoclave body 1 to spray the descaling agent comprehensively and evenly .

[0036] In some embodiments , the water pump 21 is an ultra-high pressure pulse water pump . Ultra-high pressure refers to pressuri zing the descaling agent to more than l O OMPa, so that the descaling agent reaches a suf ficiently large speed and kinetic energy, the rotation speed of the sprayer 23 can meet the requirements , and the sprayed descaling agent can also overcome gravity and spray to various places on the inner wall of the autoclave body 1 . Pulse output of the descaling agent can also achieve a better spraying ef fect .

[0037] In some embodiments , the pipeline 22 includes a first pipe 221 and a second pipe 222 . The first pipe 221 connects the water pump 21 and the blocking device 24 , and the second pipe 222 connects the blocking device 24 and the sprayer 23 . The first pipe 221 is located outside the autoclave 1 , and the second pipe 222 enters the autoclave 1 through the cleaning port .

[0038] In a preferred embodiment , the first pipe 221 is a soft 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 autoclave body 1 .

[0039] Referring to FIG . 3 . In some embodiments , the second pipe 222 has a circle of grooves at one end close to the sprayer 23 . The sprayer 23 is sleeved on the end of the second pipe 222 and has a circle of clamping blocks corresponding to the grooves . The block is engaged with the groove and can rotate freely in the groove , so that the sprayer 23 can rotate relative to the pipeline 22 . In other embodiments , other forms of rotatable connection can also be adopted .

[0040] In some embodiments , the sprayer 23 includes a housing 232 and a plurality of noz zles 233 . The housing 232 has an inner cavity . The noz zles 233 are distributed on the outer surface of the housing 232 , and the water outlet holes 231 of the noz zles 233 are connected to the inner cavity . The pipe 22 is also connected to the inner cavity, and the descaling agent first enters the inner cavity and then i s sprayed out from each noz zle 233 . The housing 232 may be spherical or approximately spherical in shape , and the noz zles 233 are evenly distributed on the outer surface of the housing 232 , thereby achieving the ef fect of spraying the descaling agent in all directions .

[0041] In some embodiments , the sprayer 23 also includes a turbine (not shown) placed into the inner cavity, the turbine is fixedly connected to the housing 232 , the pipeline 22 is placed toward the turbine , and the descaling agent flushed out of the pipeline 22 can impact the turbine so that the turbine drives the sprayer 23 to rotate .

[0042] Referring to FIG . 4 , in other embodiments , the housing 232 is not provided with a turbine , but the water outlet holes 231 of at least some of the noz zles 233 are arranged in the same rotation direction, that is , arranged clockwise or counterclockwise , while the water outlet holes 231 of other noz zles 233 are arranged radially, so as not to hinder the rotation of the sprayer 23 . Thus , when the descaling agent is sprayed out from the water outlet holes 231 , it pushes the sprayer 23 to rotate .

[0043] In some embodiments , the cleaning port I l ls provided with a flange , and the blocking device 24 is a corresponding flange , and the two are connected to achieve the blocking of the cleaning port 11 . In other embodiments , the blocking device 24 is an elastic sealing plug, which is inserted into the cleaning port 11 to block the cleaning port 11 .

[0044] In some embodiments , the ultra-high pressure pulse descaling system for autoclaves further comprises a scrubbing device 3 , wherein the scrubbing device 3 comprises a stirring mechanism 31 and a brush 32 . The stirring mechanism 31 is placed on the autoclave body 1 and is in transmission connection with the brush 32 to drive the brush 32 to rotate . The end of the brush 32 contacts the inner wall of the autoclave body 1 . The stirring mechanism 31 drives the brush 32 to rotate and brush the scale on the inner wall of the autoclave body 1 . The brush 32 is flexible and will not interfere with the cleaning device 2 when rotating .

[0045] In some embodiments , the autoclave body 1 further has a closable manhole (not shown) , which is a hole for people to pass through and is generally used for workers to enter the autoclave body 1 for inspection and maintenance . The brush 32 is detachably connected to the stirring mechanism 31 . It is easy to understand that autoclaves generally have a stirring mechanism 31 for stirring sul furic acid and slurry during production operations . During descaling operations , the original stirring mechanism 31 of the autoclave can be used, and the brush 32 can be installed on the stirring mechanism 31 , and the stirring mechanism 31 drives the brush 32 to rotate and descale . After descaling is completed, the brush 32 is removed, and the stirring mechanism 31 continues to be used for production .

[0046] In some embodiments , this ultra-high pressure pulse descaling system also includes a number of partitions 4 . The partitions 4 are placed in the autoclave body 1 and fixedly connected to the autoclave body 1 , dividing autoclave body 1 into a plurality of interconnected reaction compartments , each of which is provided with at least one scrubbing device 3 and a cleaning port 11 , and each reaction compartment is subj ected to descaling operations respectively .

[0047] Compared with the prior art , the ultra-high-pressure pulse descaling system for autoclaves provided by the present invention uses a water pump to promote the high-speed flow of descaling agent , thereby promoting the rotation of the sprayer . Spray in all directions from the inside , evenly covering the scale on the inner wall , eliminating the blind areas that are not sprayed by the descaling agent , and improving the ef fect of the descaling operation .

[0048] The above are only preferred speci fic embodiments of the present invention, but the protection scope of the present invention is not limited thereto . Any changes or substitutions that can be easily conceived by those of ordinary skill in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention .

Claims

What Is Claimed Is1 . An ultra-high pressure pulse descaling system for an autoclave , characteri zed in that it comprises : an autoclave body and a cleaning device . The autoclave body has a closable cleaning port , and the cleaning device includes a water pump, a pipeline , a sprayer and a blocking device . 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 autoclave body . The sprayer has multiple water outlet holes and is rotatably connected to the pipeline . The water pump transports the descaling agent into the sprayer through the pipeline . The sprayer can rotate under the action of the descaling agent , and the blocking device is arranged on the pipeline to block the cleaning port .2 . The ultra-high pressure pulse descaling system for an autoclave according to claim 1 is characteri zed in that the pipeline includes a first pipe and a second pipe , the first pipe connects the water pump and the blocking device , and the second pipe connects the blocking device and the sprayer .3 . The ultra-high pressure pulse descaling system for an autoclave according to claim 2 , characteri zed in that the first pipe is a soft pipe and the second pipe is a hard pipe .4 . The ultra-high pressure pulse descaling system for an autoclave according to claim 1 is characteri zed in that the sprayer includes a housing and a plurality of noz zles , the housing has an inner cavity, the noz zles are distributed on the outer surface of the housing and the water outlet holes of the noz zles are connected to the inner cavity; the pipeline is connected to the inner cavity .5 . The ultra-high pressure pulse descaling system for an autoclave according to claim 4 is characteri zed in that the water outlet holes of at least part of the noz zles are placed 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 an autoclave according to claim 4 is characteri zed in that the sprayer also includes a turbine placed 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 drive the sprayer to rotate .7 . The ultra-high pressure pulse descaling system for an autoclave according to claim 1 is characteri zed in that the water pump is an ultra-high pressure pulse water pump .8 . The ultra-high pressure pulse descaling system for an autoclave according to claim 1 is characteri zed in that it also includes a scrubbing device , the scrubbing device includes a stirring mechanism and a brush, the stirring mechanism is arranged on the autoclave body and is transmission-connected to the brush to drive the brush to rotate , so that the brush scrubs the inner wall of the autoclave body .9 . The ultra-high pressure pulse descaling system for an autoclave according to claim 8 is characteri zed in that the autoclave body also has a closable manhole , and the brush is detachably connected to the stirring mechanism .10 . The ultra-high pressure pulse descaling system for autoclaves according to claim 8 , further comprising a plurality of partitions , which are placed into the autoclave body and fixedly connected to the autoclave body . The autoclave body is divided into a plurality of interconnected reaction compartments , and each reaction compartment is provided with at least one of the scrubbing devices and the cleaning port .

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