A phosphorus removal device and method for preparing mesoporous activated carbon

Abstract

The present invention discloses a phosphorus removal device for the preparation of mesoporous activated carbon, including a housing. At the upper end of the housing, two connecting plates are symmetrically and fixedly connected. At the upper ends of the two connecting plates, a storage box is fixedly connected. A material groove is opened at the upper end of the storage box. A connecting cylinder is arranged between the housing and the storage box. The inner bottom of the storage box is communicated with the connecting cylinder through a first blanking port, and the inner bottom of the connecting cylinder is communicated with the interior of the housing through a second blanking port; an intermittent blanking mechanism, which includes a rotating roller rotatably connected between the front and rear inner walls of the connecting cylinder, and a temporary storage groove is opened on the rotating roller. The present invention also discloses a phosphorus removal method for the preparation of mesoporous activated carbon. In actual use, the overall continuity of the device is strong, and quantitative phosphorus removal is achieved, ensuring the phosphorus removal effect. After phosphorus removal, the product can also be pre-dried, thereby improving the drying efficiency in the subsequent process.

Description

Technical Field

[0001] The present invention relates to the field of activated carbon preparation, and particularly to a phosphorus removal device and a phosphorus removal method for preparing mesoporous activated carbon. Background Art

[0002] The main raw materials used in the process of preparing mesoporous activated carbon by the phosphoric acid method include biomass such as wood powder, phosphoric acid, and hydrochloric acid. First, the biomass such as wood powder is screened to remove hard impurities in the raw materials, and then the screened wood powder is impregnated in phosphoric acid. The concentration of phosphoric acid needs to be experimentally optimized according to the specific variety type and resin content of the wood powder. When the type of wood powder is determined, a phosphoric acid concentration gradient is set, and then the wood powder is allowed to fully absorb the phosphoric acid solution at a certain impregnation ratio. The obtained product is sent into a rotary activation furnace through a conveying device for carbon activation. The activated material is subjected to phosphoric acid recovery. When the phosphoric acid content in the solution drops below 5 Baumé, it is washed with clear water and then dried and packaged into finished products. In the above process flow, some fine particles or precipitates of phosphates may be formed. If these particles are further processed, they may present an appearance similar to "phosphorus powder", thus affecting the quality of the product. Therefore, it is necessary to timely remove impurities from the phosphate particles or precipitates generated in the above process.

[0003] The currently commonly used method is to remove phosphate particles or precipitates by the flushing method. However, in the actual operation of the current flushing method, the overall continuity is poor, and the user needs to perform multiple steps of operation, resulting in a relatively low actual efficiency. In addition, after flushing, the raw materials will be in a relatively wet state and need to be dried for a long time subsequently. Therefore, how to solve this problem needs to be considered. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose a phosphorus removal device for preparing mesoporous activated carbon. In the actual use of this device, its overall continuity is strong, and quantitative phosphorus removal is achieved, ensuring the phosphorus removal effect. After phosphorus removal, the product can also be pre-dried, thereby improving the drying efficiency in the subsequent process.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A phosphorus removal device for preparing mesoporous activated carbon, comprising a housing, two connecting plates are symmetrically and fixedly connected to the upper end of the housing, a storage box is fixedly connected to the upper ends of the two connecting plates, a material groove is opened at the upper end of the storage box, a connecting cylinder is arranged between the housing and the storage box, the inner bottom of the storage box is communicated with the connecting cylinder through a first blanking port, and the inner bottom of the connecting cylinder is communicated with the inside of the housing through a second blanking port; an intermittent blanking mechanism, the intermittent blanking mechanism includes a rotating roller rotatably connected between the front and rear inner walls of the connecting cylinder, and a temporary storage groove is opened on the rotating roller; a driving mechanism, the driving mechanism is used to drive the intermittent blanking mechanism, the driving mechanism includes a driving motor installed on the front side of the housing, the output shaft of the driving motor is fixedly connected with a first pulley, the front end of the rotating shaft of the rotating roller extends to the outside and is installed with a second pulley, and the first pulley and the second pulley are connected by a transmission belt; a flushing mechanism, the flushing mechanism is used to perform the phosphorus removal operation; a drying mechanism, the drying mechanism is used to pre-dry the raw materials after post-treatment.

[0007] Preferably, a liquid discharge port is arranged on the left side wall of the bottom space of the housing, and a discharge port is opened on the right side wall of the middle space of the housing.

[0008] Preferably, a vibrating net that can slide up and down is arranged inside the housing, the upper end of the vibrating net is elastically connected to the inner top of the housing through a plurality of springs, and the vibrating net is inclined.

[0009] Preferably, the output shaft of the driving motor is fixedly connected with a rotating shaft, the rear end of the rotating shaft extends into the housing, the rear end of the rotating shaft is rotatably connected to the rear inner wall of the housing, and a cam is installed on the rotating shaft, and the cam contacts the lower end surface of the vibrating net.

[0010] Preferably, the flushing mechanism includes a first piston cylinder fixedly connected to the rear side of the housing, a first piston plate that can slide up and down is arranged inside the first piston cylinder, the rear end of the rotating shaft of the rotating roller extends to the outside and is fixedly connected with a rotating disc, a connecting rod is rotatably connected to the eccentric position on the rear side of the rotating disc, and the other end of the connecting rod is rotatably connected to the upper end of the first piston plate.

[0011] Preferably, an inclined diversion plate is fixedly connected to the inner top of the housing, a strip-shaped cavity is opened in the inclined diversion plate, a liquid spraying port is opened on the left side wall of the strip-shaped cavity, the inner bottom space of the first piston cylinder is communicated with the strip-shaped cavity through a first one-way pipe, and the inner bottom space of the first piston cylinder is communicated with a second one-way pipe.

[0012] Preferably, the drying mechanism includes two fixed rods symmetrically and fixedly connected to the upper end of the first piston cylinder. The upper ends of the two fixed rods are fixedly connected together with a second piston cylinder. A slidable second piston plate is arranged in the second piston cylinder. The first piston plate and the second piston plate are fixedly connected by a connecting rod. A one-way port is opened at the inner top of the second piston cylinder. A hollow strip is fixedly connected to the right side of the housing. A plurality of gas discharge ports are opened at the inner bottom of the hollow strip. An electric heating wire is installed at the inner top of the second piston cylinder. The inner top space of the second piston cylinder is communicated with the inside of the hollow strip through a third one-way pipe.

[0013] Preferably, one-way valves for allowing fluid to flow in one direction are installed inside the first one-way pipe, the second one-way pipe, the third one-way pipe, and the one-way port.

[0014] The present invention also discloses a phosphorus removal method for preparing mesoporous activated carbon, using the above phosphorus removal equipment, including the following steps:

[0015] Step 1: First, put the activated carbon pellets after activation into the material tank for raw material feeding.

[0016] Step 2: Start the driving motor. After the driving motor starts, blanking, water spraying, and jittering operations will be carried out.

[0017] Step 3: After the driving motor starts, start the electric heating wire.

[0018] Step 4: Finally, collect the generated wastewater from the liquid discharge port, and collect the activated carbon pellets after phosphorus removal from the discharge port.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The ingenious combination of the rotating roller and the temporary storage tank ensures the accurate feeding and uniform mixing of the activated carbon pellets. At the same time, through the design of the diversion plate, the efficient distribution of the material on the jitter net is realized, enhancing the contact area between the dissolution liquid and the activated carbon pellets and improving the dissolution efficiency of phosphate.

[0021] 2. The linkage mechanism of the cam and the spring enables the jitter net to jitter up and down reciprocally, effectively promoting the separation of the water body and the activated carbon pellets. At the same time, through the jittering effect, the tiny impurities in the activated carbon pellets are further removed, improving the purity and quality of the product.

[0022] 3. The combined use of the electric heating wire and the second piston cylinder realizes the instant pre-drying of the activated carbon pellets through one-way hot air flow, significantly reducing the moisture attached to the surface of the pellets, saving time and energy for the subsequent drying step, and improving the overall processing efficiency. Description of the Drawings

[0023] Figure 1Schematic diagram of a phosphorus removal device for the preparation of mesoporous activated carbon proposed by the present invention;

[0024] Figure 2 is Figure 1 cross-sectional view;

[0025] Figure 3 is Figure 2 enlarged view at A of;

[0026] Figure 4 is Figure 1 rear view schematic diagram of;

[0027] Figure 5 is Figure 4 cross-sectional view of.

[0028] In the figure: 1 housing, 2 storage box, 3 material tank, 4 connecting plate, 5 connecting cylinder, 6 drain port, 7 rotating disc, 8 driving motor, 9 rotating shaft, 10 first pulley, 11 transmission belt, 12 second pulley, 13 cam, 14 first discharge port, 15 rotating roller, 16 temporary storage tank, 17 discharge port, 18 hollow strip, 19 gas discharge port, 20 spring, 21 second discharge port, 22 connecting rod, 23 strip-shaped cavity, 24 liquid spraying port, 25 first piston cylinder, 26 first one-way pipe, 27 second one-way pipe, 28 second piston cylinder, 29 third one-way pipe, 30 one-way port, 31 fixed rod, 32 connecting rod, 33 heating wire, 34 first piston plate, 35 second piston plate, 36 vibrating mesh. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Refer to Figures 1-5, a dephosphorization device for preparing mesoporous activated carbon, comprising a shell 1, two connecting plates 4 are symmetrically fixedly connected to the upper end of the shell 1, a material storage box 2 is fixedly connected to the upper ends of the two connecting plates 4, a material trough 3 is provided at the upper end of the material storage box 2, a connecting tube 5 is provided between the shell 1 and the material storage box 2, the inner bottom of the connecting tube 5 of the material storage box 2 is connected through a first drop opening 14, the inner bottom of the connecting tube 5 is connected to the inside of the shell 1 through a second drop opening 21, a liquid discharge port 6 is provided on the left wall of the bottom space of the shell 1, and a discharge port 17 is provided on the right wall of the middle space of the shell 1;

[0032] As an embodiment of the present invention, an intermittent blanking mechanism is also included. The intermittent blanking mechanism includes a rotating roller 15 rotatably connected between the front and rear inner walls of the connecting cylinder 5. The rotating roller 15 is provided with a temporary storage groove 16.

[0033] As an embodiment of the present invention, a driving mechanism is further included, and the driving mechanism is used to drive the intermittent blanking mechanism. The driving mechanism includes a driving motor 8 installed on the front side of the housing 1, and the output shaft of the driving motor 8 is fixedly connected to the first pulley 10. The front end of the rotating shaft of the rotating roller 15 extends to the outside and is installed with a second pulley 12. The first pulley 10 and the second pulley 12 are connected by a transmission belt 11. The radius of the first pulley 10 is one quarter of the radius of the second pulley 12, so as to realize the reduction transmission;

[0034] As an embodiment of the present invention, a shaking net 36 that can slide up and down is arranged in the shell 1, and the upper end of the shaking net 36 is elastically connected to the inner top of the shell 1 through multiple springs 20. The shaking net 36 is arranged obliquely, and the output shaft of the driving motor 8 is fixedly connected to the rotating shaft 9, and the rear end of the rotating shaft 9 extends to the inside of the shell 1. The rear end of the rotating shaft 9 is rotatably connected to the rear inner wall of the shell 1. A cam 13 is installed on the rotating shaft 9, and the cam 13 contacts the lower end surface of the shaking net 36. When it is used, the shaking net 36 can be reciprocated up and down by rotating the cam 13 and using the spring 20;

[0035] As an embodiment of the present invention, it further includes a flushing mechanism for performing the dephosphorization operation. The flushing mechanism includes a first piston cylinder 25 fixedly connected to the rear side of the housing 1. A first piston plate 34 that can slide up and down is arranged in the first piston cylinder 25. The rear end of the rotating shaft of the rotating roller 15 extends to the outside and is fixedly connected to a rotating disc 7. A connecting rod 22 is rotatably connected to the eccentric position on the rear side of the rotating disc 7. The other end of the connecting rod 22 is rotatably connected to the upper end of the first piston plate 34. A slanting guide plate is fixedly connected to the inner top of the housing 1. A strip-shaped cavity 23 is formed in the slanting guide plate. A liquid spraying port 24 is formed in the left side wall of the strip-shaped cavity 23. The inner bottom space of the first piston cylinder 25 is communicated with the strip-shaped cavity 23 through a first one-way pipe 26. The inner bottom space of the first piston cylinder 25 is communicated with a second one-way pipe 27. The other end of the second one-way pipe 27 is communicated with an external water tank;

[0036] As an embodiment of the present invention, it further includes a drying mechanism for pre-drying the post-treated raw materials. The drying mechanism includes two fixing rods 31 symmetrically and fixedly connected to the upper end of the first piston cylinder 25. The upper ends of the two fixing rods 31 are jointly fixedly connected to a second piston cylinder 28. A second piston plate 35 that can slide is arranged in the second piston cylinder 28. The first piston plate 34 and the second piston plate 35 are fixedly connected through a connecting rod 32. A one-way port 30 is formed in the inner top of the second piston cylinder 28. A hollow strip 18 is fixedly connected to the right side of the housing 1. A plurality of gas discharge ports 19 are formed in the inner bottom of the hollow strip 18. An electric heating wire 33 is installed in the inner top of the second piston cylinder 28. The inner top space of the second piston cylinder 28 is communicated with the inside of the hollow strip 18 through a third one-way pipe 29. One-way valves for allowing the one-way flow of fluid are installed inside the first one-way pipe 26, the second one-way pipe 27, the third one-way pipe 29, and the one-way port 30. Further, the one-way valve in the first one-way pipe 26 allows the fluid to flow unidirectionally from the bottom space of the first piston cylinder 25 into the strip-shaped cavity 23. The flow direction of the one-way valve in the second one-way pipe 27 is from the external water tank flowing unidirectionally into the inner bottom space of the first piston cylinder 25. The flow direction of the one-way valve of the one-way port 30 is from top to bottom. The flow direction of the one-way valve in the third one-way pipe 29 is from the second piston cylinder 28 flowing unidirectionally into the hollow strip 18.

[0037] In the present invention, during actual use, activated carbon pellets are first put into the material tank 3, and then the driving motor 8 is started. After the driving motor 8 is started, the rotating roller 15 will rotate through the transmission of the first pulley 10 and the second pulley 12. The rotation of the rotating roller 15 will cause a part of the temporary storage tank 16 to rotate. When it is located above, the activated carbon pellets in the material tank 3 will fall into the temporary storage tank 16. When it is located below, the activated carbon pellets in the temporary storage tank 16 will fall onto the left side of the vibrating mesh 36 through the guide plate;

[0038] The rotation of the rotating shaft 9 will also drive the rotation of the rotating disc 7. By using the connecting rod 22, the reciprocating up and down movement of the first piston plate 34 can be realized. In cooperation with the first one-way pipe 26, the second one-way pipe 27 and the internal one-way valve, the one-way water flow of the external water tank, the first piston cylinder 25 and the strip cavity 23 can be generated. Finally, the water body is sprayed out from the liquid spraying port 24, contacts with the activated carbon particles, dissolves the phosphate therein, and the dissolved phosphate and smaller impurities will pass through the shaking net 36 and fall to the bottom of the housing 1, and are discharged from the liquid discharge port 6. The start of the drive motor 8 will make the rotating shaft 9 rotate, so that the cam 13 rotates. Through the rotation of the cam 13 and the use of the spring 20, the shaking net 36 can be reciprocated up and down. By using the shaking, the separation of the water body and the activated carbon particles can be more comprehensive, and finally discharged from the discharge port 17. At this time, the water body adhered to the activated carbon particles is less;

[0039] Further, in the above process, the heating wire 33 can be started. The up and down movement of the first piston plate 34 will cause the second piston plate 35 to reciprocate up and down through the connecting rod 32. By using this method, in cooperation with the one-way port 30 and the one-way valve in the third one-way pipe 29, the one-way hot air flow of the outside, the second piston cylinder 28 and the hollow strip 18 can be generated. Finally, the high-temperature air flow is discharged from the plurality of gas discharge ports 19 to pre-dry the activated carbon particles, thereby improving the subsequent drying efficiency.

[0040] The present invention also discloses a phosphorus removal method for preparing mesoporous activated carbon, using the above phosphorus removal equipment, including the following steps:

[0041] The first step: First, put the activated activated carbon particles into the material tank 3 for the feeding of raw materials;

[0042] The second step: Start the drive motor 8. After the drive motor 8 is started, the operations of blanking, spraying water and shaking will be carried out;

[0043] The third step: After the drive motor 8 is started, start the heating wire 33;

[0044] The fourth step: Finally, collect the generated waste water from the liquid discharge port 6, and collect the activated carbon particles after phosphorus removal from the discharge port 17.

[0045] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0046] As mentioned above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A phosphorus removal device for preparing mesoporous activated carbon, characterized in that: include: A shell (1), wherein two connecting plates (4) are symmetrically fixedly connected to the upper end of the shell (1), and the upper ends of the two connecting plates (4) are commonly fixedly connected to a material storage box (2), and a material trough (3) is provided at the upper end of the material storage box (2). A connecting tube (5) is provided between the shell (1) and the material storage box (2), and the inner bottom of the connecting tube (5) of the material storage box (2) is connected to the inside of the shell (1) through a second material drop opening (21); An intermittent blanking mechanism, the intermittent blanking mechanism comprising a rotating roller (15) rotatably connected between the front and rear inner walls of the connecting cylinder (5), the rotating roller (15) being provided with a temporary storage groove (16); A driving mechanism, the driving mechanism is used to drive the intermittent blanking mechanism, the driving mechanism comprises a driving motor (8) installed on the front side of the housing (1), the output shaft of the driving motor (8) is fixedly connected to a first pulley (10), the front end of the rotating shaft of the rotating roller (15) extends to the outside and is installed with a second pulley (12), the first pulley (10) and the second pulley (12) are connected by a transmission belt (11); A flushing mechanism, wherein the flushing mechanism is used to implement a dephosphorization operation; A drying mechanism, the drying mechanism is used to pre-dry the raw materials after post-treatment; The flushing mechanism comprises a first piston cylinder (25) fixedly connected to the rear side of the housing (1), a first piston plate (34) which can slide up and down is arranged in the first piston cylinder (25), the rear end of the rotating shaft of the rotating roller (15) extends to the outside and is fixedly connected to a rotating disc (7), a connecting rod (22) is rotatably connected to the rear eccentric part of the rotating disc (7), and the other end of the connecting rod (22) is rotatably connected to the upper end of the first piston plate (34); The inner top of the housing (1) is fixedly connected with an inclined guide plate, a strip-shaped cavity (23) is provided in the inclined guide plate, a liquid spraying port (24) is provided on the left side wall of the strip-shaped cavity (23), the inner bottom space of the first piston cylinder (25) is connected with the strip-shaped cavity (23) through a first one-way tube (26), and the inner bottom space of the first piston cylinder (25) is connected with a second one-way tube (27); The drying mechanism comprises two fixed rods (31) symmetrically fixedly connected to the upper end of the first piston cylinder (25), the upper ends of the two fixed rods (31) are commonly fixedly connected to the second piston cylinder (28), a slidable second piston plate (35) is arranged in the second piston cylinder (28), the first piston plate (34) and the second piston plate (35) are fixedly connected by a connecting rod (32), a one-way port (30) is provided at the top of the second piston cylinder (28), a hollow bar (18) is fixedly connected to the right side of the shell (1), a plurality of gas exhaust ports (19) are provided at the inner bottom of the hollow bar (18), a heating wire (33) is installed at the inner top of the second piston cylinder (28), and the inner top space of the second piston cylinder (28) is connected to the inside of the hollow bar (18) through a third one-way tube (29); One-way valves for one-way flow of fluid are installed inside the first one-way tube (26), the second one-way tube (27), the third one-way tube (29) and the one-way port (30).

2. The phosphorus removal equipment for preparing mesoporous activated carbon according to claim 1, characterized in that: A liquid discharge port (6) is provided on the left side wall of the bottom space of the shell (1), and a material discharge port (17) is provided on the right side wall of the middle space of the shell (1).

3. The phosphorus removal equipment for preparing mesoporous activated carbon according to claim 1, characterized in that: A shaking net (36) that can slide up and down is arranged in the shell (1), and the upper end of the shaking net (36) is elastically connected to the inner top of the shell (1) through a plurality of springs (20), and the shaking net (36) is arranged in an inclined manner.

4. The phosphorus removal equipment for preparing mesoporous activated carbon according to claim 3, characterized in that: The output shaft of the driving motor (8) is fixedly connected to a rotating shaft (9), the rear end of the rotating shaft (9) extends into the interior of the housing (1), the rear end of the rotating shaft (9) is rotatably connected to the rear inner wall of the housing (1), and a cam (13) is mounted on the rotating shaft (9), and the cam (13) contacts the lower end surface of the shaking net (36).

5. A method for removing phosphorus for preparing mesoporous activated carbon, using the phosphorus removal equipment according to any one of claims 1 to 4, characterized in that: The following steps are involved: The first step is to put activated carbon pellets into the feed tank (3) to put the raw materials; Step 2: Start the driving motor (8). After the driving motor (8) is started, the material dropping, water spraying and shaking operations will be performed; Step 3: After the driving motor (8) is started, the heating wire (33) is started; Step 4: Finally, the generated wastewater is collected from the discharge port (6), and the activated carbon particles after phosphorus removal are collected from the discharge port (17).

Images