Online deslagging type continuous reaction device

Abstract

The utility model provides an online deslagging type continuous reaction device. The on-line deslagging type continuous reaction device comprises a continuous reaction tank, a rotary driver, a stirring paddle and an on-line deslagging assembly, a mixing tank is arranged in the continuous reaction tank; the rotating driver is positioned above a groove opening of the material mixing groove; the stirring paddle is positioned in the mixing tank and is connected to a rotating shaft of the rotating driver; the continuous reaction tank is provided with a slurry liquid level plane close to the notch of the mixing tank; a material guide opening and a liquid return opening are sequentially formed in the inner wall of the material mixing tank in the rotating direction of the stirring paddle, and are both positioned on a slurry liquid level plane; the on-line deslagging assembly is installed on the outer side of the continuous reaction tank, the feeding end of the on-line deslagging assembly is communicated with the material guiding opening, the discharging end of the on-line deslagging assembly is communicated with the liquid returning opening, and reaction slurry pushed in along with scum sequentially passes through the on-line deslagging assembly and the liquid returning opening to circularly flow back into the material mixing tank in a flowing state. The removal of the scum by the online scum removal assembly can be accelerated.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hydrometallurgical devices, and particularly to an online slag-removing continuous reaction device. Background Art

[0002] Lithium-ion batteries are widely used due to their good safety, low price, rich raw materials, etc. In the production process, nickel-iron alloys are often used to prepare battery raw materials such as iron phosphate and lithium iron phosphate. Among them, since nickel-iron alloys are often smelted by pyrometallurgical processes, in addition to containing two main metals, nickel and iron, their components also contain other impurity elements such as carbon, silicon, and chromium. At present, in order to improve production efficiency in the industry, a hydrometallurgical method is often used to carry out a continuous leaching reaction process on nickel-iron alloys. During the continuous leaching reaction process, since the leaching solution is continuously discharged from the bottom of the reaction tank, some impurity elements with relatively low density in the nickel-iron alloy (such as carbon, etc.) will float and cover the surface layer of the reaction slurry, thereby hindering the escape of hydrogen gas during the reaction, and ultimately causing hydrogen gas to accumulate in the reaction tank. In this way, it is extremely easy to cause accidents such as explosions and fires. In response to the above problems, some manufacturers have made further research and development.

[0003] For example, Chinese Patent Document CN219174334U discloses an anaerobic reactor with a scum removal device, including a reactor barrel body, a scraper, a scraper driving device, a scum baffle, an effluent weir, and a scum hopper. An inlet is provided at the bottom of the reactor barrel body, and an outlet is provided at the upper part of the reactor barrel body. The scraper driving device is arranged at the center of the reactor barrel body to fix and drive the scraper; inside the reactor barrel body, an effluent weir is provided in a circle along the upper part of the barrel body. The outer side wall of the effluent weir communicates with the outlet, and a circle of scum baffle is provided inside the inner side wall of the effluent weir; the scum hopper is arranged inside the scum baffle, and a pipeline is connected to the bottom of the scum hopper, and the pipeline extends outside the reactor barrel body.

[0004] However, the design of the above-mentioned anaerobic reactor with a scum removal device has the following problems:

[0005] Although the above-mentioned anaerobic reactor with a scum removal device can push the scum on the surface layer of the reaction slurry into the scum hopper through the scraper, so as to collect the scum, a large amount of reaction slurry will also be carried during the process of the scum entering the scum hopper. The reaction slurry entering the scum hopper will occupy space, thereby hindering the subsequent entry of the scum, resulting in low scum removal efficiency and being difficult to be applicable to the working conditions where scum is continuously generated. Summary of the Utility Model

[0006] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide an online slag-removing continuous reaction device that can continuously remove scum and has high slag removal efficiency.

[0007] The object of the present disclosure is achieved by the following technical solutions:

[0008] An on-line slag-removing continuous reaction device includes a continuous reaction tank, a rotating drive and a stirring paddle; a mixing tank is provided in the continuous reaction tank; the rotating drive is located above the mouth of the mixing tank and is used for fixedly mounting on a frame; the stirring paddle is located in the mixing tank and is connected to the rotating shaft of the rotating drive;

[0009] The on-line slag-removing continuous reaction device further includes an on-line slag-removing assembly;

[0010] A slurry liquid level plane is provided at a position of the continuous reaction tank adjacent to the mouth of the mixing tank; a material guiding port and a liquid return port are sequentially arranged on the inner wall of the mixing tank along the rotation direction of the stirring paddle, and both the material guiding port and the liquid return port are located on the slurry liquid level plane; the on-line slag-removing assembly is installed outside the continuous reaction tank, the feeding end of the on-line slag-removing assembly is communicated with the material guiding port, the discharging end of the on-line slag-removing assembly is communicated with the liquid return port, and the on-line slag-removing assembly is used for filtering floating slag.

[0011] In one embodiment, the on-line slag-removing assembly includes a floating slag liquid inlet pipe, a slag filter and a filtrate return pipe which are connected in sequence, and the discharging end of the floating slag liquid inlet pipe is communicated with the liquid inlet end of the filtrate return pipe through the slag filter; the feeding end of the floating slag liquid inlet pipe and the discharging end of the filtrate return pipe are respectively connected to the continuous reaction tank, the feeding end of the floating slag liquid inlet pipe is communicated with the material guiding port, and the discharging end of the filtrate return pipe is communicated with the liquid return port.

[0012] In one embodiment, a purging pipe is provided on the floating slag liquid inlet pipe; the blowing port of the purging pipe is communicated with the floating slag liquid inlet pipe and faces the slag filter.

[0013] In one embodiment, the blowing direction of the purging pipe and the length direction of the floating slag liquid inlet pipe form a first included angle, and the first included angle is below 45°.

[0014] In one embodiment, the on-line slag-removing assembly further includes a sight glass, and the sight glass is arranged between the slag filter and the filtrate return pipe; the discharging end of the slag filter is communicated with the liquid inlet end of the filtrate return pipe through the sight glass.

[0015] In one embodiment, a plurality of flow baffle ribs are convexly arranged on the inner peripheral wall of the mixing tank; the plurality of flow baffle ribs are distributed at intervals around the stirring paddle of the rotating drive.

[0016] In one embodiment, the on-line slag-removing continuous reaction device further includes a bracket and a plurality of defoaming grid bars. The bracket is arranged above the slurry liquid level plane and fixedly connected to each of the baffle ribs; each of the defoaming grid bars is arranged on the bracket and extends below the slurry liquid level plane respectively; the rotating shaft of the rotating drive penetrates through the bracket and is connected to the stirring paddle.

[0017] In one embodiment, the bracket includes a sleeve plate and a plurality of connecting arms; the sleeve plate is rotatably sleeved on the rotating shaft of the rotating drive, the first end of each connecting arm is fixedly connected to the sleeve plate, and the second end of each connecting arm is fixedly connected to one of the baffle ribs; a plurality of the defoaming grid bars are arranged at intervals on each connecting arm.

[0018] In one embodiment, one end of the defoaming grid bar is bent towards the side wall of the mixing tank to form a slag-pushing part.

[0019] In one embodiment, a guiding baffle is arranged on the inner wall of the mixing tank; the guiding baffle is arranged on one side of the material guiding port and forms a guiding channel with the inner wall of the mixing tank; the guiding channel communicates with the material guiding port.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] 1) Since the material guiding port and the liquid return port are at the slurry liquid level plane, when the liquid level of the reaction slurry in the mixing tank reaches the slurry liquid level plane, the scum on the surface layer of the reaction slurry will also be enriched on the slurry liquid level plane. Since the material guiding port and the liquid return port are arranged in sequence along the rotation direction of the stirring paddle, when the rotating drive drives the stirring paddle to stir the reaction slurry in the mixing tank, the scum on the surface layer of the reaction slurry will also rotate along the rotation direction of the stirring paddle. During the rotation process, the scum will carry the reaction slurry into the material guiding port together. Also, because the feeding end of the on-line slag-removing component is communicated with the material guiding port, the scum and the reaction slurry will continue to enter the on-line slag-removing component. Since the discharging end of the on-line slag-removing component is communicated with the liquid return port, after the scum is filtered by the on-line slag-removing component, the reaction slurry can still return to the mixing tank through the liquid return port.

[0022] 2) Compared with the anaerobic reactor with a scum removal device in the prior art, the above-mentioned on-line slag-removing continuous reaction device can push the scum on the surface layer of the slurry into the material guiding port by means of the stirring force of the stirring paddle of the rotating drive. In this way, the reaction slurry pushed in together with the scum will sequentially pass through the on-line slag-removing component and the liquid return port and circulate back to the mixing tank in a flowing state. The reaction slurry will not only not occupy the space inside the on-line slag-removing component, but also can continuously push the scum towards the on-line slag-removing component during the flowing process, thereby accelerating the removal of the scum by the on-line slag-removing component and being better used in the working conditions where scum is continuously generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of an on-line slag removal type continuous reaction device according to an embodiment of the present disclosure;

[0025] Figure 2 is Figure 1 Top view sectional structure diagram of the on-line slag removal type continuous reaction device shown;

[0026] Figure 3 is Figure 1 On-line slag removal assembly of the on-line slag removal type continuous reaction device shown;

[0027] Figure 4 Structural schematic diagram of an on-line slag removal type continuous reaction device according to another embodiment of the present disclosure;

[0028] Figure 5 is Figure 4 Top view sectional structure diagram of the on-line slag removal type continuous reaction device shown;

[0029] Figure 6 is Figure 5 Partial enlarged view shown at A in

[0030] Reference numerals: 10, on-line slag removal type continuous reaction device; 100, continuous reaction tank; 110, mixing tank; 1110, material guiding port; 1120, liquid return port; 1130, flow baffle rib; 1140, material guiding baffle; 101, slurry liquid level plane; 102, guiding channel; 200, rotation drive; 210, rotating shaft; 300, stirring paddle; 400, on-line slag removal assembly; 410, scum liquid inlet pipe; 4110, purging pipe; 420, slag filter; 430, filtrate return pipe; 440, sight glass; 500, support; 510, sleeve plate; 520, connecting arm; 600, defoaming grid bar; 610, slag pushing part; 20, scum. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this disclosure pertains. The terms used herein in the specification of this disclosure are for the purpose of describing specific implementations only and are not intended to limit this disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] To better understand the technical solutions and beneficial effects of this disclosure, the following further describes this disclosure in detail with specific embodiments:

[0035] As Figure 1 shown in Figure 2 FIG. 15, an online slag removal type continuous reaction device 10 of an embodiment includes a continuous reaction tank 100, a rotation drive 200, a stirring paddle 300 and an online slag removal assembly 400; a mixing tank 110 is provided in the continuous reaction tank 100; the rotation drive 200 is located above the opening of the mixing tank 110 and is used for being fixedly installed on the frame; the stirring paddle 300 is located in the mixing tank 110 and is connected to the rotating shaft 210 of the rotation drive 200; a slurry liquid level plane 101 is provided at a position adjacent to the opening of the mixing tank 110 in the continuous reaction tank 100; a material guiding port 1110 and a liquid return port 1120 are sequentially formed on the inner wall of the mixing tank 110 along the rotation direction of the stirring paddle 300, and both the material guiding port 1110 and the liquid return port 1120 are located on the slurry liquid level plane 101; the online slag removal assembly 400 is installed on the outside of the continuous reaction tank 100, the feeding end of the online slag removal assembly 400 is communicated with the material guiding port 1110, the discharging end of the online slag removal assembly 400 is communicated with the liquid return port 1120, and the online slag removal assembly 400 is used for filtering the floating slag 20.

[0036] It can be understood that since the material guiding port 1110 and the liquid return port 1120 are located on the slurry liquid level plane 101, when the reaction slurry liquid level in the mixing tank 110 reaches the slurry liquid level plane 101, the scum 20 on the surface layer of the reaction slurry will also accumulate on the slurry liquid level plane 101. Since the material guiding port 1110 and the liquid return port 1120 are sequentially arranged along the rotation direction of the stirring paddle 300, when the rotation drive 200 drives the stirring paddle 300 to stir the reaction slurry in the mixing tank 110, the scum 20 on the surface layer of the reaction slurry will also rotate along the rotation direction of the stirring paddle 300. During the rotation process, the scum 20 will carry the reaction slurry into the material guiding port 1110 together. Also, because the feeding end of the on-line slag removal assembly 400 is communicated with the material guiding port 1110, the scum 20 and the reaction slurry will continue to enter the on-line slag removal assembly 400. Since the discharging end of the on-line slag removal assembly 400 is communicated with the liquid return port 1120, after the scum 20 is filtered by the on-line slag removal assembly 400, the reaction slurry can still return to the mixing tank 110 through the liquid return port 1120.

[0037] It can be understood that compared with the anaerobic reactor with a scum removal device in the prior art, the above-mentioned on-line slag removal type continuous reaction device 10 can push the scum 20 on the surface layer of the slurry into the material guiding port 1110 by means of the stirring force of the stirring paddle 300 of the rotation drive 200. In this way, the reaction slurry pushed in together with the scum 20 will sequentially pass through the on-line slag removal assembly 400 and the liquid return port 1120 and circulate back to the mixing tank 110 in a flowing state. The reaction slurry will not only not occupy the space in the on-line slag removal assembly 400, but also can continuously push the scum 20 to flow towards the on-line slag removal assembly 400 during the flowing process, thereby accelerating the removal of the scum 20 by the on-line slag removal assembly 400 and being better used under the working conditions where the scum 20 is continuously generated.

[0038] Combined with Figure 2 And Figure 3As shown, in one embodiment, the on-line slag removal assembly 400 includes a scum liquid inlet pipe 410, a slag filter 420, and a filtrate return pipe 430 that are connected in sequence. The discharge end of the scum liquid inlet pipe 410 communicates with the inlet end of the filtrate return pipe 430 through the slag filter 420; the feed end of the scum liquid inlet pipe 410 and the discharge end of the filtrate return pipe 430 are respectively connected to the continuous reaction tank 100. The feed end of the scum liquid inlet pipe 410 communicates with the guide opening 1110, and the discharge end of the filtrate return pipe 430 communicates with the liquid return opening 1120. It can be understood that because the discharge end of the scum liquid inlet pipe 410 communicates with the inlet end of the filtrate return pipe 430 through the slag filter 420, and at the same time the feed end of the scum liquid inlet pipe 410 communicates with the guide opening 1110, and the discharge end of the filtrate return pipe 430 communicates with the liquid return opening 1120, the scum 20 and the reaction slurry entering from the guide opening 1110 will first enter the slag filter 420 through the scum liquid inlet pipe 410. The slag filter 420 filters out the scum 20, and the filtered reaction slurry will return to the mixing tank 110 through the filtrate return pipe 430 and the liquid return opening 1120. During this process, the scum 20 will enter the slag filter 420 more quickly under the propulsion of the reaction slurry and be filtered out. Specifically, according to the needs of the use scenario, the scum liquid inlet pipe 410 and the filtrate return pipe 430 can use flexible metal hoses, which is not limited here.

[0039] Combined with Figure 3 As shown, in this embodiment, a purge pipe 4110 is provided on the scum liquid inlet pipe 410; the air blowing port of the purge pipe 4110 communicates with the scum liquid inlet pipe 410 and faces the slag filter 420. It can be understood that because the air blowing port of the purge pipe 4110 is arranged facing the slag filter 420, nitrogen can be introduced into the purge pipe 4110, and with the driving force of nitrogen, the scum 20 enriched in the scum liquid inlet pipe 410 can be pushed to the slag filter 420, further accelerating the removal effect of the scum 20. Specifically, the number of purge pipes 4110 is two. One purge pipe 4110 is arranged close to the guide opening 1110, and the other purge pipe 4110 is arranged close to the slag filter 420. The scum 20 near the guide opening 1110 can be quickly pushed into the scum liquid inlet pipe 410 through one purge pipe 4110, and at the same time, the scum 20 near the slag filter 420 can be pushed to flow more quickly through the other purge pipe 4110, further improving the removal efficiency of the slag filter 420 for the scum 20.

[0040] Combined with Figure 3As shown, further, the blowing direction of the purging pipe 4110 forms a first included angle α with the length direction of the scum liquid inlet pipe 410, and the first included angle α is less than 45°. It can be understood that because the blowing direction of the purging pipe 4110 forms a first included angle α with the length direction of the scum liquid inlet pipe 410, when the first included angle α is set to be less than 45°, the gas blown out from the purging pipe 4110 can act more towards the filter 420, so that more scum 20 can be purged towards the filter 420, improving the cleaning efficiency of the scum 20. At the same time, when the filter 420 is blocked or cleaned, it can also be assisted by purging through the purging pipe 4110, thus accelerating the processing efficiency. Specifically, the first included angle α can be selected as 15°, 30° or 45°, which is not limited here, and those skilled in the art can also make other selections according to needs.

[0041] Combined with Figure 3 As shown, in one embodiment, the on-line slag removal assembly 400 further includes a sight glass 440, and the sight glass 440 is arranged between the filter 420 and the filtrate return pipe 430; the discharge end of the filter 420 is communicated with the liquid inlet end of the filtrate return pipe 430 through the sight glass 440. It can be understood that since the discharge end of the filter 420 is communicated with the liquid inlet end of the filtrate return pipe 430 through the sight glass 440, the operator can observe the material flow condition at the discharge end of the filter 420 through the sight glass 440, and can simply judge whether the filter 420 is blocked according to the material flow condition at the discharge end of the filter 420, so as to clean the filter 420 in time. Specifically, the filter 420 can adopt a basket filter, and the basket filter can quickly disassemble the filter screen, making it more convenient to clean.

[0042] Combined with Figure 4 And Figure 5 As shown, in one embodiment, a plurality of baffle ribs 1130 are convexly provided on the inner peripheral wall of the mixing tank 110; the plurality of baffle ribs 1130 are spaced around the stirring paddle 300 of the rotation drive 200. It can be understood that since the plurality of baffle ribs 1130 are provided on the inner peripheral wall of the mixing tank 110 and are spaced around the stirring paddle 300 of the rotation drive 200, when the rotation drive 200 drives the stirring paddle 300 to stir the reaction slurry in the mixing tank 110, the reaction slurry will also rotate with the rotation of the stirring paddle 300, and then will repeatedly impact the reaction slurry, improving the mixing effect of the reaction slurry.

[0043] Combined with Figure 4As shown, in one embodiment, the on-line slag removal type continuous reaction device 10 further includes a bracket 500 and a plurality of defoaming grid bars 600. The bracket 500 is arranged above the slurry liquid level plane 101 and fixedly connected to each baffle rib 1130; each defoaming grid bar 600 is arranged on the bracket 500 and extends below the slurry liquid level plane 101 respectively; the rotating shaft 210 of the rotating drive 200 rotates through the bracket 500 and is connected to the stirring paddle 300. It can be understood that since the bracket 500 is fixedly connected to each baffle rib 1130, the bracket 500 can be firmly arranged above the slurry liquid level plane 101, and further the defoaming grid bars 600 can be firmly installed on the bracket 500. Also, because the defoaming grid bars 600 extend below the slurry liquid level plane 101, when the reaction slurry level in the mixing tank 110 reaches the slurry liquid level plane 101, the defoaming grid bars 600 can contact the surface layer of the reaction slurry, and the defoaming grid bars 600 can pierce the bubbles on the surface layer of the reaction slurry to accelerate the escape of hydrogen. At the same time, since the rotating shaft 210 of the rotating drive 200 rotates through the bracket 500, relative rotation can occur between the rotating shaft 210 of the rotating drive 200 and the bracket 500, so as to avoid interference between the bracket 500 and the rotating shaft 210 of the rotating drive 200, and finally ensure the smooth rotation of the rotating shaft 210 of the rotating drive 200.

[0044] Combined with Figure 5 As shown, in this embodiment, the bracket 500 includes a sleeve plate 510 and a plurality of connecting arms 520; the sleeve plate 510 is rotatably sleeved on the rotating shaft 210 of the rotating drive 200, the first ends of the connecting arms 520 are fixedly connected to the sleeve plate 510, and the second ends of the connecting arms 520 are respectively fixedly connected to a baffle rib 1130; a plurality of defoaming grid bars 600 are arranged at intervals on each connecting arm 520. It can be understood that since the sleeve plate 510 is rotatably sleeved on the rotating shaft 210 of the rotating drive 200, interference between the sleeve plate 510 and the rotating shaft 210 of the rotating drive 200 can be avoided. Also, because the sleeve plate 510 is fixedly connected to each baffle rib 1130 through the connecting arms 520 one by one, the sleeve plate 510 can be firmly fixed by the supporting action of the connecting arms 520. At the same time, since a plurality of defoaming grid bars 600 are arranged at intervals on each connecting arm 520, the scum 20 on the surface layer of the reaction slurry can also pass through the gaps between the defoaming grid bars 600, thereby reducing the obstruction of the defoaming grid bars 600 to the scum 20 and ensuring that the scum 20 can float on the surface layer of the reaction slurry.

[0045] Combined with Figure 6As shown in the figure, further, one end of the defoaming grid bar 600 is bent towards the side wall of the mixing tank 110, and a slag pushing part 610 is formed. It can be understood that since the slag pushing part 610 at one end of the defoaming grid bar 600 faces the side wall of the mixing tank 110, when the liquid level of the reaction slurry in the mixing tank 110 reaches the slurry liquid level plane 101, the defoaming grid bar 600 can push the scum 20 enriched on the surface layer of the reaction slurry towards the side wall of the mixing tank 110, thereby making the scum 20 closer to the material guiding port 1110 and further improving the efficiency of the scum 20 entering the material guiding port 1110.

[0046] Combined with Figure 6 As shown in the figure, in one embodiment, a material guiding baffle 1140 is provided on the inner wall of the mixing tank 110; the material guiding baffle 1140 is arranged on one side of the material guiding port 1110 and forms a guiding channel 102 with the inner wall of the mixing tank 110; the guiding channel 102 communicates with the material guiding port 1110. It can be understood that since the guiding channel 102 is formed between the material guiding baffle 1140 and the inner wall of the mixing tank 110 and the guiding channel 102 communicates with the material guiding port 1110, the scum 20 floating along the inner wall of the mixing tank 110 can enter the material guiding port 1110 more smoothly through the guiding channel 102.

[0047] In one embodiment, for better understanding, the use process of the above online slag removal type continuous reaction device 10 is described as follows:

[0048] Combined with Figure 1 As shown in the figure, first, dilute sulfuric acid is added to the mixing tank 110 and stopped when the dilute sulfuric acid is about 1 m away from the slurry liquid level plane 101. Nitrogen is introduced into the mixing tank 110 to displace the oxygen in the mixing tank 110 so that the oxygen content is below 3%. Then the rotation driver 200 is started. When the rotation driver 200 drives the stirring paddle 300 to stir the dilute sulfuric acid, nickel iron powder slurry is slowly added to the dilute sulfuric acid synchronously. After a part of the dilute sulfuric acid is consumed, dilute sulfuric acid and nickel iron powder slurry are continuously added in a predetermined ratio to prepare a reaction slurry. At this time, the surface layer of the reaction slurry has reached the slurry liquid level plane 101, and the feeding into the mixing tank 110 is stopped. At the same time, the scum 20 rotates with the stirring paddle 300 on the surface layer of the reaction slurry, and the scum 20 and the reaction slurry enter the online slag removal assembly 400 from the material guiding port 1110. The online slag removal assembly 400 filters out the scum 20, and the reaction slurry reflows back into the mixing tank 110 from the liquid return port 1120. In this way, with the continuous rotation of the stirring paddle 300, all the scum 20 can be filtered out by the online slag removal assembly 400.

[0049] Compared with the prior art, the present disclosure has at least the following advantages:

[0050] 1) Since the material guiding port 1110 and the liquid returning port 1120 are on the slurry liquid level plane 101, when the reaction slurry liquid level in the mixing tank 110 reaches the slurry liquid level plane 101, the scum 20 on the surface layer of the reaction slurry will also accumulate on the slurry liquid level plane 101. Since the material guiding port 1110 and the liquid returning port 1120 are sequentially arranged along the rotation direction of the stirring paddle 300, when the rotation driver 200 drives the stirring paddle 300 to stir the reaction slurry in the mixing tank 110, the scum 20 on the surface layer of the reaction slurry will also rotate along the rotation direction of the stirring paddle 300. During the rotation process, the scum 20 will carry the reaction slurry into the material guiding port 1110 together. Also, since the feeding end of the on-line slag removal assembly 400 is connected to the material guiding port 1110, the scum 20 and the reaction slurry will continue to enter the on-line slag removal assembly 400. Since the discharging end of the on-line slag removal assembly 400 is connected to the liquid returning port 1120, after the scum 20 is filtered by the on-line slag removal assembly 400, the reaction slurry can still return to the mixing tank 110 through the liquid returning port 1120.

[0051] 2) Compared with the anaerobic reactor with a scum removal device in the prior art, the above on-line slag removal type continuous reaction device 10 can push the scum 20 on the surface layer of the slurry into the material guiding port 1110 by means of the stirring force of the stirring paddle 300 of the rotation driver 200. In this way, the reaction slurry pushed in together with the scum 20 will sequentially pass through the on-line slag removal assembly 400 and the liquid returning port 1120 and circulate back to the mixing tank 110 in a flowing state. The reaction slurry will not only not occupy the space in the on-line slag removal assembly 400, but also can continuously push the scum 20 to flow towards the on-line slag removal assembly 400 during the flowing process, thereby accelerating the removal of the scum 20 by the on-line slag removal assembly 400 and being better applicable to the working conditions where the scum 20 is continuously generated.

[0052] The above-described embodiments merely represent several implementation manners of the present disclosure. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. An online slag removal type continuous reaction device (10), comprising a continuous reaction tank (100), a rotary driver (200) and a stirring paddle (300); a mixing tank (110) is provided in the continuous reaction tank (100); the rotary driver (200) is located above a notch of the mixing tank (110) and is used for being fixedly mounted on a frame; the stirring paddle (300) is located in the mixing tank (110) and is connected to a rotating shaft (210) of the rotary driver (200); It is characterized in that The online slag removal type continuous reaction device (10) further includes an online slag removal component (400); The continuous reaction tank (100) is provided with a slurry liquid level plane (101) at a notch position adjacent to the mixing tank (110); a material guide port (1110) and a liquid return port (1120) are sequentially provided on the inner wall of the mixing tank (110) along the rotation direction of the stirring paddle (300); the material guide port (1110) and the liquid return port (1120) are both located on the slurry liquid level plane (101); the online slag removal component (400) is installed on the outside of the continuous reaction tank (100); the feed end of the online slag removal component (400) is connected to the material guide port (1110), and the discharge end of the online slag removal component (400) is connected to the liquid return port (1120); the online slag removal component (400) is used to filter the slag (20).

2. The on-line slag-removing continuous reaction device (10) according to claim 1, wherein The online slag removal component (400) comprises a slag liquid inlet pipe (410), a slag filter (420) and a filtrate return pipe (430) connected in sequence, wherein the discharge end of the slag liquid inlet pipe (410) is connected to the liquid inlet end of the filtrate return pipe (430) through the slag filter (420); the feed end of the slag liquid inlet pipe (410) and the liquid outlet end of the filtrate return pipe (430) are respectively connected to the continuous reaction tank (100), the feed end of the slag liquid inlet pipe (410) is connected to the material guide port (1110), and the liquid outlet end of the filtrate return pipe (430) is connected to the liquid return port (1120).

3. The online slag removal continuous reaction device (10) according to claim 2, characterized in that: The scum liquid inlet pipe (410) is provided with a purge pipe (4110); the air blowing port of the purge pipe (4110) is connected to the scum liquid inlet pipe (410) and faces the scum filter (420).

4. The on-line slag-removing continuous reaction device (10) according to claim 3, characterized in that, A first angle is formed between the blowing direction of the purge pipe (4110) and the length direction of the scum liquid inlet pipe (410), and the first angle is less than 45°.

5. The online slag removal continuous reaction device (10) according to claim 2, characterized in that: The online slag removal assembly (400) further includes a sight glass (440), which is arranged between the slag filter (420) and the filtrate reflux pipe (430); the discharge end of the slag filter (420) is connected to the liquid inlet end of the filtrate reflux pipe (430) through the sight glass (440).

6. The on-line slag-removing continuous reaction device (10) according to claim 1, wherein, A plurality of baffle ribs (1130) are convexly provided on the inner peripheral wall of the mixing tank (110); the plurality of baffle ribs (1130) are distributed at intervals around the stirring paddle (300) of the rotary driver (200).

7. The on-line slag-removing continuous reaction device (10) according to claim 6, characterized in that, The online slag removal type continuous reaction device (10) further includes a bracket (500) and a plurality of bubble removal bars (600), wherein the bracket (500) is arranged above the slurry liquid level plane (101) and is fixedly connected to each of the baffle ribs (1130); each of the bubble removal bars (600) is arranged on the bracket (500) and extends below the slurry liquid level plane (101); the rotating shaft (210) of the rotary driver (200) rotates through the bracket (500) and is connected to the stirring paddle (300).

8. The online slag removal continuous reaction device (10) according to claim 7, characterized in that: The bracket (500) comprises a sleeve plate (510) and a plurality of connecting arms (520); the sleeve plate (510) is rotatably sleeved on the rotating shaft (210) of the rotating driver (200); the first end of each connecting arm (520) is fixedly connected to the sleeve plate (510), and the second end of each connecting arm (520) is respectively fixedly connected to one of the baffle ribs (1130); and a plurality of the debubbling bars (600) are arranged at intervals on each connecting arm (520).

9. The online slag removal continuous reaction device (10) according to claim 7, characterized in that: One end of the debubble grid bar (600) is bent toward the side wall of the mixing tank (110) to form a slag pushing portion (610).

10. The online slag removal continuous reaction device (10) according to claim 1, characterized in that: A material guide baffle (1140) is provided on the inner wall of the mixing trough (110); the material guide baffle (1140) is provided on one side of the material guide opening (1110) and forms a guide channel (102) with the inner wall of the mixing trough (110); the guide channel (102) is connected to the material guide opening (1110).

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