Phosphorus resource efficient utilization device

Abstract

The utility model relates to the technical field of diammonium phosphate production, and provides an efficient phosphorus resource utilization device, which comprises a mounting ring, a phosphorus resource utilization device and a phosphorus resource utilization device, the mounting seats are arranged on the outer side of the mounting ring and are opposite to the communicating position of the air inlet pipe and the reducing pipe, the mounting seats are provided with grooves, and the grooves communicate with the interior of the reducing pipe; each mounting seat is provided with one return pipe, each return pipe is provided with an inlet and an outlet, the inlet is communicated with the groove, and the outlet extends to one side of the liquid ammonia pipe and points to the front end cover. According to the technical scheme, the slurry is stirred and mixed, the uniformity of the slurry is improved, and the utilization rate of phosphorus resources is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of diammonium phosphate production, in particular to a device for efficiently utilizing phosphorus resources. Background Art

[0002] A tubular reactor for diammonium phosphate production has been disclosed (application number: 202122719531.4, authorization announcement date 2022.01.22). In order to reduce crystallization and scaling on the tube wall, a coaxially connected reaction tube, a reduced diameter tube and a slurry tube are designed, and the front and rear ends are sealed with a front cover and a rear end cover. The liquid ammonia tube extends into the reaction tube to provide liquid ammonia, and the reaction tube is connected to the phosphoric acid tube to provide phosphoric acid. An air inlet pipe is arranged on the reduced diameter tube, and compressed air is used to disturb the internal material to improve fluidity, and the slurry is sprayed out from the discharge slot on the slurry pipe. In this production equipment, the internal mixer is removed. However, the mixing effect of the materials cannot achieve the best effect through the impact mixing of the materials and the disturbance mixing of the compressed gas, which affects the uniformity of the slurry and is not conducive to the efficient utilization of phosphorus resources. Therefore, it is still necessary to improve the mixing degree of the materials from the perspective of mixing and stirring. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a phosphorus resource efficient utilization device for the above-mentioned technical deficiencies, which can stir and mix the slurry, improve the uniformity of the slurry, and improve the utilization rate of phosphorus resources.

[0004] The technical solution adopted by the utility model is to provide a phosphorus resource efficient utilization device, comprising:

[0005] A mounting ring, used for being rotatably disposed in the reducing tube;

[0006] There are several mounting seats, each of which is arranged outside the mounting ring and opposite to the position where the air intake pipe is connected to the reduced diameter pipe, and each of the mounting seats has a groove, and the groove is connected to the inside of the reduced diameter pipe;

[0007] There are several reflux pipes, each of which is provided with a reflux pipe on the mounting seat. The reflux pipe has an inlet and an outlet. The inlet is connected with the groove, and the outlet extends to the side of the liquid ammonia pipe and points to the front end cover.

[0008] Further optimizing the technical solution, further comprising a supporting device, the supporting device comprising:

[0009] A support ring, located inside the plurality of return pipes;

[0010] There are a plurality of support fins, each of which is arranged outside the support ring, and one end of the support fin away from the axis of the support ring is arranged on the outer wall of the return pipe.

[0011] To further optimize the technical solution, there are several support devices, and the several support devices are distributed parallel to the axial direction of the mounting ring. The end of the support ring close to the liquid ammonia pipe is bell-mouth-shaped, and the end with a larger diameter of the bell-mouth faces the liquid ammonia pipe. The end of the support ring away from the liquid ammonia pipe has several first spoiler rods.

[0012] To further optimize the technical solution, the mounting seat has a plurality of second spoiler rods at one end away from the liquid ammonia pipe.

[0013] Further optimization of this technical solution also includes:

[0014] A transmission rod is arranged through the slurry pipe, one end of the transmission rod drives the mounting ring to rotate, and the other end passes through the rear end cover for transmission connection with an external drive motor;

[0015] There are a plurality of stirring plates, which are arranged in an array in sequence on the transmission rod along the circumferential direction.

[0016] Further optimization of this technical solution also includes:

[0017] A transmission seat, located on one side of the axis of the mounting ring, the transmission seat is arranged at the end of the transmission rod, and the diameter of the transmission seat is smaller than the inner diameter of the mounting ring;

[0018] There are several connecting rods, which are arranged obliquely relative to the axial direction of the mounting ring, with one end arranged on the mounting ring and the other end arranged on the transmission seat.

[0019] Further optimization of this technical solution also includes:

[0020] A connecting bolt is used to detachably connect the transmission seat and the transmission rod.

[0021] Further optimization of this technical solution also includes:

[0022] A positioning bracket is used to be arranged on the inner wall of the slurry pipe or the inner wall of the reduced diameter pipe, and the transmission seat is rotatably sleeved with the positioning bracket.

[0023] The beneficial effects of the utility model are:

[0024] 1. The mounting ring drives the mounting seat to rotate, which can fully stir the material at the reduced diameter pipe. At the same time, this is the relative position of the air intake pipe, and the radial impact mixing of the air intake pipe is coordinated to improve the mixing effect; the mounting pipe rotates with the mounting seat. The mounting pipe is located inside the reaction tube, which can stir the slurry inside the reaction tube and improve the mixing degree, thereby improving the utilization rate of phosphorus resources.

[0025] 2. Compressed air is provided at the air inlet pipe to make the pressure inside the reduced diameter pipe higher. By connecting the installation pipe with the groove, part of the slurry at the reduced diameter pipe can be transported to the end of the reaction tube close to the liquid ammonia pipe through the reflux pipe, thereby improving the material fluidity at the end of the reaction tube, improving the mixing degree, reducing crystallization and scaling, and further improving the utilization rate of phosphorus resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the planar structure of the utility model;

[0027] Figure 2 for Figure 1 The schematic diagram of the local enlarged structure at position I in the middle;

[0028] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure at II in the middle;

[0029] Figure 4 for Figure 1 A schematic diagram of the partially enlarged structure at position III in the middle;

[0030] Figure 5 It is a schematic diagram of a partial three-dimensional structure of the installation ring of the utility model;

[0031] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the support device of the utility model;

[0032] Explanation of markings in the figure: 1. tubular reactor; 101. front end cover; 102. reaction tube; 103. reduced diameter tube; 104. slurry tube; 105. rear end cover; 106. liquid ammonia tube; 107. phosphoric acid tube; 108. air inlet pipe; 2. mounting ring; 3. mounting seat; 301. groove; 302. second spoiler rod; 4. reflux pipe; 401. inlet; 402. outlet; 5. supporting device; 501. supporting ring; 5011. first spoiler rod; 502. supporting fin; 6. transmission rod; 601. stirring plate; 7. transmission seat; 701. through hole; 8. connecting rod; 801. threaded hole; 9. connecting bolt; 10. positioning bracket. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0035] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] like Figure 1-6 As shown, a phosphorus resource efficient utilization device is installed in a tubular reactor 1 for use. The tubular reactor 1 includes but is not limited to: a front cover 101, a reaction tube 102, a reduced diameter tube 103, a slurry tube 104 and a rear cover 105. A liquid ammonia tube 106 is provided on the front cover 101, a phosphoric acid tube 107 is connected to the reaction tube 102, and an air inlet tube 108 is connected to the reduced diameter tube 103. For the sake of simplicity, the structure of the tubular reactor 1 is simplified, and some structures are not shown.

[0038] The phosphorus resource efficient utilization device includes: a mounting ring 2, which is used to be rotatably arranged in a reduced diameter pipe 103; a plurality of mounting seats 3, which are arranged outside the mounting ring 2 and opposite to the position where the air intake pipe 108 is connected to the reduced diameter pipe 103, and the mounting seat 3 has a groove 301, and the groove 301 is connected to the inside of the reduced diameter pipe 103; a plurality of return pipes 4, each mounting seat 3 is provided with a return pipe 4, and the return pipe 4 has an inlet 401 and an outlet 402, the inlet 401 is connected to the groove 301, and the outlet 402 extends to the side of the liquid ammonia pipe 106 and points to the front end cover 101. It also includes a support device 5, which includes: a support ring 501, which is located inside the plurality of return pipes 4; a plurality of support fins 502, which are arranged outside the support ring 501, and the end of the support fin 502 away from the axis of the support ring 501 is arranged on the outer wall of the return pipe 4. There are a plurality of support devices 5, which are distributed parallel to the axis direction of the mounting ring 2. The end of the support ring 501 close to the liquid ammonia pipe 106 is in a bell-mouth shape, and the end with a larger diameter of the bell-mouth shape faces the liquid ammonia pipe 106. The end of the support ring 501 away from the liquid ammonia pipe 106 has a plurality of first spoiler rods 5011. The end of the mounting seat 3 away from the liquid ammonia pipe 106 has a plurality of second spoiler rods 302.

[0039] When in use, the mounting ring 2 is installed at the position of the reducing tube 103 so as to be opposite to the position of the air inlet pipe 108. When the air inlet pipe 108 passes compressed gas into the reducing tube 103, the local pressure is made larger, and the liquid ammonia pipe 106 at the front end of the reaction tube 102 sprays liquid ammonia, causing the pressure in the area near the liquid ammonia pipe 106 at the front end of the reaction tube 102 (the area next to the liquid ammonia pipe 106) to decrease, and compared with the area directly sprayed by the liquid ammonia pipe 106, the fluidity and mixing of this area are poor, and it is easy to crystallize and scale. The mounting seat 3 is positioned opposite to the air inlet pipe 108, and the opening of the groove 301 is located at the end of the mounting seat 3 away from the axis of the mounting ring 2. The groove 301 is connected to the inside of the reducing pipe 103, the inlet 401 of the reflux pipe 4 is connected to the groove 301, and the outlet 402 is connected to the area beside the liquid ammonia pipe 106 (that is, the outlet 402 is close to the front end cover 101), thereby connecting the high-pressure area with the low-pressure area, and connecting the area with strong fluidity with the area with poor fluidity. Under the action of high pressure and when the mounting seat 3 rotates, the groove 301 is directly opposite to the air inlet pipe 108 for a certain period of time, which can better transport part of the slurry in the area of ​​the reducing pipe 103 to the area beside the liquid ammonia pipe 106 through the reflux pipe 4, enhance the fluidity of the area of ​​the liquid ammonia pipe 106, improve the mixing degree of the slurry, and extend the residence time of the slurry. Slurry and bubbles can flow in the reflux pipe 4.

[0040] During the rotation of the mounting ring 2, the mounting seat 3 stirs the slurry in the reduced diameter tube 103. When the air inlet pipe 108 is not directly opposite to the groove 301, the introduced compressed gas stirs the slurry in the reduced diameter tube 103. When it is directly opposite to the groove 301, part of the compressed gas directly carries the slurry into the groove 301 and the return pipe 4, and part of the gas collides with the inner wall of the groove 301, the outer wall of the mounting seat 3 or the outer wall of the mounting ring 2 to form a vortex, forming a sputtering diffusion state, and improving the mixing effect. When the mounting ring 2 rotates, it does not need to rotate at a high speed.

[0041] The support device 5 is provided to improve the stability of the reflux pipe 4 and has a stirring effect. The support fins 502 can support the reflux pipe 4, and at the same time, the support fins 502 can form a stirring effect to improve the mixing degree. The front end of the support ring 501 is in a trumpet shape to facilitate the circulation of the slurry, and all end faces relative to the flow direction of the slurry can be chamfered. The first spoiler rod 5011 can improve the slurry spoiling effect and stirring effect on the rear end area of ​​the support ring 501, and improve the fluidity in the area.

[0042] A second spoiler rod 302 is provided at the rear end of the mounting seat 3, which can form a spoiler and stirring effect on the rear end of the mounting seat 3 and improve the fluidity of the area. At the same time, the rear end of the mounting seat 3 can be chamfered to improve the flow driving performance of the rear end area of ​​the mounting seat 3 when the slurry flows.

[0043] Furthermore, it also includes: a transmission rod 6, which is set through the slurry pipe 104, one end of the transmission rod 6 drives the mounting ring 2 to rotate, and the other end passes through the rear end cover 105, which is used for transmission connection with an external drive motor; there are a plurality of stirring plates 601, and the plurality of stirring plates 601 are arranged in an array in the circumferential direction on the transmission rod 6. It also includes: a transmission seat 7, which is located on the side of the axis direction of the mounting ring 2, and the transmission seat 7 is arranged at the end of the transmission rod 6, and the diameter of the transmission seat 7 is smaller than the inner diameter of the mounting ring 2; there are a plurality of connecting rods 8, which are arranged obliquely relative to the axis direction of the mounting ring 2, one end is arranged on the mounting ring 2, and the other end is arranged on the transmission seat 7. It also includes: a connecting bolt 9, and the transmission seat 7 and the transmission rod 6 are detachably connected by the connecting bolt 9. It also includes: a positioning bracket 10, which is used to be arranged on the inner wall of the slurry pipe 104 or the inner wall of the reducing pipe 103, and the transmission seat 7 is rotatably sleeved with the positioning bracket 10.

[0044] When in use, the end of the transmission rod 6 can pass through the rear end cover 105 and be connected to the driving end of the external driving motor. The setting of the stirring plate 601 can improve the strength of the transmission rod 6, and at the same time can stir the slurry in the slurry pipe 104 to improve the fluidity and mixing effect. The transmission rod 6 drives the mounting ring 2 to rotate through the transmission seat 7 and the connecting rod 8. The connecting rod 8 is inclined along the axial direction, which is conducive to reducing the negative impact on the fluidity in the radial section, and the connecting rod 8 can also play a stirring role.

[0045] A through hole 701 can be opened in the middle of the transmission seat 7, and a threaded hole 801 can be opened at the end of the transmission rod 6. The connecting bolt 9 passes through the through hole 701 and is threadedly connected to the threaded hole 801. The connecting bolt 9 is located in the middle position, which can reduce the impact on the fluidity of the slurry. The transmission seat 7 and the transmission rod 6 are detachable, and the transmission seat 7 is located near the connection position of the reducer pipe 103 and the slurry pipe 104, which is convenient for installation and maintenance.

[0046] The positioning bracket 10 can improve the rotational stability of the transmission seat 7. The transmission seat 7 is rotatably sleeved in the middle of the positioning bracket 10. The positioning bracket 10 can be welded and fixed on the inner wall of the slurry pipe 104, thereby improving the overall rotational stability. The rotational speed of the transmission seat 7 can be relatively low, so the rotational stability requirement is also relatively low. Similar positioning bracket 10 structures can be set at other positions as needed.

[0047] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A phosphorus resource efficient utilization device, used for stirring slurry in a tubular reactor (1), the tubular reactor (1) comprising a front end cover (101), a reaction tube (102), a reduced diameter tube (103), a slurry tube (104) and a rear end cover (105) which are coaxially connected, the front end cover (101) being provided with a liquid ammonia tube (106), the reaction tube (102) being connected with a phosphoric acid tube (107), and the reduced diameter tube (103) being connected with an air inlet tube (108); characterized in that: include: A mounting ring (2) for being rotatably disposed in the reducing tube (103); A plurality of mounting seats (3), each of which is arranged outside the mounting ring (2) and opposite to a position where the air intake pipe (108) is connected to the reduced diameter pipe (103), and each of which has a groove (301) connected to the inside of the reduced diameter pipe (103); There are a plurality of reflux pipes (4), one of which is disposed on each mounting seat (3). The reflux pipe (4) has an inlet (401) and an outlet (402), the inlet (401) being connected to the groove (301), and the outlet (402) extending to the side of the liquid ammonia pipe (106) and pointing to the front end cover (101).

2. A phosphorus resource efficient utilization device according to claim 1, characterized in that: It also includes a supporting device (5), wherein the supporting device (5) includes: A support ring (501) is located inside the plurality of return pipes (4); There are a plurality of supporting fins (502), each of which is arranged outside the supporting ring (501), and one end of the supporting fin (502) away from the axis of the supporting ring (501) is arranged on the outer wall of the return pipe (4).

3. A phosphorus resource efficient utilization device according to claim 2, characterized in that: The supporting devices (5) are provided in plurality, and the supporting devices (5) are distributed parallel to the axial direction of the mounting ring (2); the end of the supporting ring (501) close to the liquid ammonia pipe (106) is in a bell-mouth shape, and the end with a larger diameter of the bell-mouth shape faces the liquid ammonia pipe (106); the end of the supporting ring (501) away from the liquid ammonia pipe (106) is provided with a plurality of first spoiler rods (5011).

4. A phosphorus resource efficient utilization device according to claim 3, characterized in that: The mounting seat (3) has a plurality of second spoiler rods (302) at one end away from the liquid ammonia pipe (106).

5. The phosphorus resource efficient utilization device according to claim 1, characterized in that: Also includes: A transmission rod (6) is arranged to penetrate the slurry pipe (104), one end of the transmission rod (6) drives the mounting ring (2) to rotate, and the other end of the transmission rod (6) passes through the rear end cover (105) to be connected to an external drive motor; There are a plurality of stirring plates (601), and the stirring plates (601) are arranged in an array in sequence along the circumferential direction on the transmission rod (6).

6. A phosphorus resource efficient utilization device according to claim 5, characterized in that: Also includes: A transmission seat (7) is located on one side of the axis of the mounting ring (2), the transmission seat (7) is arranged at the end of the transmission rod (6), and the diameter of the transmission seat (7) is smaller than the inner diameter of the mounting ring (2); There are a plurality of connecting rods (8), each of which is arranged obliquely relative to the axial direction of the mounting ring (2), with one end arranged on the mounting ring (2) and the other end arranged on the transmission seat (7).

7. A phosphorus resource efficient utilization device according to claim 6, characterized in that: Also includes: A connecting bolt (9), wherein the transmission seat (7) and the transmission rod (6) are detachably connected via the connecting bolt (9).

8. The phosphorus resource efficient utilization device according to claim 6, characterized in that: Also includes: A positioning bracket (10), the positioning bracket (10) is used to be arranged on the inner wall of the slurry pipe (104) or the inner wall of the reducing pipe (103), and the transmission seat (7) is rotatably sleeved with the positioning bracket (10).

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