Phosphorous acid heating and concentrating device

Abstract

The utility model relates to the technical field of heating concentration devices, and particularly discloses a phosphorous acid heating concentration device which comprises a tank body, one end of the tank body is closed, the other end of the tank body is open, a cover plate is fixedly arranged at the open end of the tank body, a heating cavity is formed between the outer wall and the inner wall of the tank body, and a plurality of partition plates are arranged in the tank body at intervals in a matched mode. A plurality of concentration cavities are formed between the partition plates and the inner wall of the tank body, the concentration cavities are connected with liquid inlet pipes and negative pressure pipes in a matched mode, the liquid inlet pipes are arranged in the middle of the side wall of the tank body, the negative pressure pipes are arranged at the closed end of the tank body, and the heating cavity is connected with an exhaust pipe and a plurality of steam inlet pipes. The exhaust pipe is arranged on the upper end face of the tank body, and the steam inlet pipe is arranged on the side, away from the liquid inlet pipe, of the tank body. Through reasonable arrangement of the heating cavity and the concentration cavity, the heating contact area of a solution in the tank body is increased, and the heating efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and concentrating devices, and specifically discloses a heating and concentrating phosphorous acid device. Background Art

[0002] Heating and concentrating phosphorous acid is an important part of chemical production, which aims to remove part of the water in the phosphorous acid solution through the heating process, thereby increasing the concentration of the phosphorous acid solution. In the process of heating and concentrating phosphorous acid, steam heating is mostly used. The phosphorous acid solution is placed in a concentration kettle and heated by low-pressure steam. The heat energy of the steam is transferred to the solution to evaporate the water therein. It has the advantages of high thermal efficiency and uniform heating, and is a commonly used heating method in chemical production. In addition to steam heating, electric heating, hot oil heating and other methods can also be used to heat the phosphorous acid solution.

[0003] Chinese patent CN117298619A discloses a phosphorous acid solution evaporation and concentration device, including a flow tank, a feed pipe is provided on the top of the flow tank, a discharge pipe is provided on the bottom, a negative pressure generating pipe is provided on the top of the flow tank, and also includes: a heater, the heater includes a shell, a tube body vertically arranged in the shell, the bottom of the tube body is connected to the bottom of the flow tank, and the shell is connected to a steam system; a heat exchange tube mechanism, the heat exchange tube mechanism is arranged inside the flow tank, the top of the tube body is connected to the heat exchange tube mechanism, the heat exchange tube mechanism is also connected to the inside of the flow tank, and the flow tank and the tube body form a communicating vessel structure. This patent has the problem that the heating contact area of ​​the phosphorous acid solution in the tank body is small, resulting in low heating efficiency. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the utility model provides a device for heating and concentrating phosphorous acid to solve the problem that the heating contact area of ​​the phosphorous acid solution in the tank is small, resulting in low heating efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The heating and concentrating phosphorous acid device comprises a tank body, one end of which is closed and the other end of which is open. A cover plate is fixedly arranged at the open end of the tank body, a heating chamber is formed between the outer wall and the inner wall of the tank body, a plurality of partitions are arranged at intervals in the tank body, each partition is hollow, and the inner cavity of each partition is connected to the heating chamber, a plurality of concentrating chambers are formed between each partition and the inner wall of the tank body, and the plurality of concentrating chambers are connected with a liquid inlet pipe and a negative pressure pipe, the liquid inlet pipe is arranged in the middle of the side wall of the tank body, the negative pressure pipe is arranged at the closed end of the tank body, an exhaust pipe and a plurality of steam inlet pipes are connected to the heating chamber, the exhaust pipe is arranged on the upper end surface of the tank body, and the steam inlet pipe is arranged on the side of the tank body away from the liquid inlet pipe.

[0007] Furthermore, two partitions are provided, and both partitions are arranged horizontally, and three concentration chambers are formed between the two partitions and the inner wall of the tank body.

[0008] Furthermore, three liquid inlet pipes are provided in coordination with the concentration chamber, and the three liquid inlet pipes all penetrate the outer wall and the inner wall of the tank body to communicate with the concentration chamber, and the three liquid inlet pipes are all located above the lower end surface of the connected concentration chamber.

[0009] Furthermore, three negative pressure tubes are arranged in conjunction with the concentrating chamber, and all three negative pressure tubes pass through the closed end of the tank body to connect to the concentrating chamber. All three negative pressure tubes are located above the lower end surface of the connected concentrating chamber, and one end of the three negative pressure tubes away from the concentrating chamber is connected to a negative pressure main pipe, and the opening of the negative pressure main pipe is arranged vertically upward.

[0010] Furthermore, the exhaust pipe is located at an end away from the cover plate, and the exhaust pipe passes through the outer wall of the tank body and is connected to the heating chamber.

[0011] Furthermore, the steam inlet pipe is located at one end close to the cover plate, and three steam inlet pipes are arranged in conjunction with the concentration chamber. The three steam inlet pipes all penetrate the outer wall of the tank body and connect to the heating chamber. The ends of the three steam inlet pipes away from the heating chamber are connected to a steam inlet main pipe, and the opening of the steam inlet main pipe is arranged vertically downward.

[0012] Furthermore, three nitrogen pipes are arranged on the cover plate to cooperate with the concentration chamber, and the three nitrogen pipes all penetrate the cover plate to communicate with the concentration chamber.

[0013] Furthermore, a drain pipe is provided on the lower end surface of the tank body, and the drain pipe is located at an end away from the cover plate, and the drain pipe passes through the outer wall of the tank body and is connected to the heating chamber.

[0014] Furthermore, a plurality of hinged seats 1 are fixedly provided on the side of the lower end surface of the tank body close to the drain pipe, each hinged seat 1 is hinged with a support rod, and one end of the support rod away from the hinged seat 1 is fixedly connected to the bottom plate, and a hinged seat 2 is fixedly provided on the side of the lower end surface of the tank body close to the cover plate, a telescopic assembly is hinged on the hinged seat 2, and an end of the telescopic assembly away from the tank body is hinged with a hinged seat 3, and the hinged seat 3 is fixedly provided on the bottom plate.

[0015] Furthermore, the telescopic assembly includes an oil cylinder and a piston rod, the oil cylinder and the articulated seat are three-hinged, the piston rod and the articulated seat are two-hinged, and the piston rod and the inner cavity of the oil cylinder are slidably connected.

[0016] The beneficial effects of the utility model are:

[0017] The utility model increases the heating contact area of ​​the solution in the tank body and improves the heating efficiency of the device through the reasonable arrangement of the heating chamber and the concentration chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 The longitudinal section structure of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 4 The longitudinal section structure of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 5 The longitudinal section structure of the utility model is shown in FIG. Figure 3 ;

[0023] Figure 6 The utility model is a schematic diagram of the structure without the cover plate, nitrogen pipe, support rod, bottom plate, telescopic assembly and hinged seat.

[0024] In the figure: 1. tank body; 2. cover plate; 3. partition plate; 4. heating chamber; 5. concentration chamber; 6. liquid inlet pipe; 7. steam inlet pipe; 8. exhaust pipe; 9. nitrogen pipe; 10. negative pressure pipe; 11. hinged seat 1; 12. support rod; 13. bottom plate; 14. oil cylinder; 15. drain pipe; 16. negative pressure main pipe; 17. steam inlet main pipe; 18. hinged seat 2; 19. piston rod; 20. hinged seat 3. DETAILED DESCRIPTION

[0025] The utility model is described and illustrated in detail below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] like Figure 1-6 As shown, the heating and concentrating phosphorous acid device comprises a tank body 1, one end of the tank body 1 is closed, and the other end of the tank body 1 is open. A cover plate 2 is fixedly provided at the open end of the tank body 1, a heating chamber 4 is formed between the outer wall and the inner wall of the tank body 1, a plurality of partitions 3 are arranged at intervals in the tank body 1, each partition 3 is hollow, and the inner cavity of each partition 3 is connected to the heating chamber 4, a plurality of concentrating chambers 5 are formed between each partition 3 and the inner wall of the tank body 1, and the plurality of concentrating chambers 5 are connected with a liquid inlet pipe 6 and a negative pressure pipe 10, the liquid inlet pipe 6 is arranged in the middle of the side wall of the tank body 1, and the negative pressure pipe 10 is arranged at the closed end of the tank body 1, and an exhaust pipe 8 and a plurality of steam inlet pipes 7 are connected to the heating chamber 4, the exhaust pipe 8 is arranged on the upper end surface of the tank body 1, and the steam inlet pipe 7 is arranged on the side of the tank body 1 away from the liquid inlet pipe 6.

[0028] By rationally arranging the heating chamber 4 and the concentrating chamber 5, the heating contact area of ​​the solution in the tank body 1 is increased, and the heating efficiency of the device is improved; when in use, the phosphorous acid solution enters the concentrating chamber 5 through the liquid inlet pipe 6, the steam inlet pipe 7 is connected to an external steam source to provide steam for the heating chamber 4, the negative pressure pipe 10 is connected to an external exhaust fan to increase the flow rate of the gas in the concentrating chamber 5, and further improve the heating and concentrating efficiency, and the exhaust pipe 8 ensures the flow of steam in the heating chamber 4.

[0029] Two partitions 3 are provided, and the two partitions 3 are both arranged horizontally. Three concentration chambers 5 are formed between the two partitions 3 and the inner wall of the tank body 1 .

[0030] Three liquid inlet pipes 6 are provided to cooperate with the concentration chamber 5 . The three liquid inlet pipes 6 all penetrate the outer wall and the inner wall of the tank body 1 to communicate with the concentration chamber 5 . The three liquid inlet pipes 6 are all located above the lower end surface of the connected concentration chamber 5 .

[0031] Three negative pressure pipes 10 are provided in cooperation with the concentration chamber 5. The three negative pressure pipes 10 all penetrate the closed end of the tank body 1 and connect to the concentration chamber 5. The three negative pressure pipes 10 are all located above the lower end surface of the connected concentration chamber 5. The ends of the three negative pressure pipes 10 away from the concentration chamber 5 are all connected to the negative pressure main pipe 16, and the opening of the negative pressure main pipe 16 is vertically arranged upward. By setting the three negative pressure pipes 10 to be connected to the negative pressure main pipe 16, it is convenient to use a single exhaust fan to extract negative pressure.

[0032] The exhaust pipe 8 is located at one end away from the cover plate 2 , and the exhaust pipe 8 passes through the outer wall of the tank body 1 and is connected to the heating chamber 4 .

[0033] The steam inlet pipe 7 is located at one end close to the cover plate 2. Three steam inlet pipes 7 are arranged in conjunction with the concentration chamber 5. The three steam inlet pipes 7 all penetrate the outer wall of the tank body 1 and are connected to the heating chamber 4. The ends of the three steam inlet pipes 7 away from the heating chamber 4 are all connected to the steam inlet main pipe 17, and the openings of the steam inlet main pipe 17 are arranged vertically downward.

[0034] Three nitrogen pipes 9 are arranged on the cover plate 2 to cooperate with the concentration chamber 5, and the three nitrogen pipes 9 all penetrate the cover plate 2 and communicate with the concentration chamber 5. Through the arrangement of the nitrogen pipes 9, the gas volume and airflow speed in the concentration chamber 5 are guaranteed, and the heating concentration efficiency is further improved.

[0035] The lower end surface of the tank body 1 is provided with a drain pipe 15, and the drain pipe 15 is located at an end away from the cover plate 2, and the drain pipe 15 passes through the outer wall of the tank body 1 and communicates with the heating chamber 4. The condensed water in the heating chamber 4 can be discharged by providing the drain pipe 15.

[0036] A plurality of hinged seats 11 are fixedly provided on the side of the lower end surface of the tank body 1 close to the drain pipe 15, and a support rod 12 is hinged on each hinged seat 11, and the end of the support rod 12 away from the hinged seat 11 is fixedly connected to the bottom plate 13. A hinged seat 2 18 is fixedly provided on the side of the lower end surface of the tank body 1 close to the cover plate 2, and a telescopic component is hinged on the hinged seat 28, and an hinged seat 3 20 is hinged on the end of the telescopic component away from the tank body 1, and the hinged seat 3 20 is fixedly provided on the bottom plate 13.

[0037] The telescopic assembly includes an oil cylinder 14 and a piston rod 19. The oil cylinder 14 is hinged to an articulated seat 3 20, the piston rod 19 is hinged to an articulated seat 2 18, and the piston rod 19 is slidably connected to the inner cavity of the oil cylinder 14.

[0038] The arrangement of the hinge seat 1 11, the support rod 12, the oil cylinder 14, the hinge seat 2 18, the piston rod 19 and the hinge seat 3 20 facilitates the removal of the material in the concentration chamber 5 after the heating and concentration process is completed. When in use, the piston rod 19 is slid toward the inner cavity of the oil cylinder 14, the length of the telescopic assembly is shortened, and the entire device is tilted toward the side of the cover plate 2. At this time, the material in the concentration chamber 5 is concentrated on the side of the cover plate 2, and the cover plate 2 is opened to remove the material.

Claims

1. A device for heating and concentrating phosphorous acid, comprising a tank body (1), wherein one end of the tank body (1) is closed and the other end of the tank body (1) is open, and a cover plate (2) is fixedly provided at the open end of the tank body (1), characterized in that: A heating chamber (4) is formed between the outer wall and the inner wall of the tank body (1). A plurality of partitions (3) are arranged in the tank body (1) at intervals. Each partition (3) is hollow and the inner cavity of each partition (3) is connected to the heating chamber (4). A plurality of concentration chambers (5) are formed between each partition (3) and the inner wall of the tank body (1). The plurality of concentration chambers (5) are connected to a liquid inlet pipe (6) and a negative pressure pipe (10). The liquid inlet pipe (6) is arranged in the middle of the side wall of the tank body (1), and the negative pressure pipe (10) is arranged at the closed end of the tank body (1). An exhaust pipe (8) and a plurality of steam inlet pipes (7) are connected to the heating chamber (4). The exhaust pipe (8) is arranged on the upper end surface of the tank body (1), and the steam inlet pipe (7) is arranged on a side of the tank body (1) away from the liquid inlet pipe (6).

2. The heating and concentrating phosphorous acid device according to claim 1, characterized in that: Two partitions (3) are provided, and the two partitions (3) are both arranged horizontally, and three concentration chambers (5) are formed between the two partitions (3) and the inner wall of the tank body (1).

3. The heating and concentrating phosphorous acid device according to claim 2, characterized in that: Three liquid inlet pipes (6) are provided in cooperation with the concentration chamber (5). The three liquid inlet pipes (6) all penetrate the outer wall and the inner wall of the tank body (1) to communicate with the concentration chamber (5). The three liquid inlet pipes (6) are all located above the lower end surface of the connected concentration chamber (5).

4. The heating and concentrating phosphorous acid device according to claim 2, characterized in that: Three negative pressure tubes (10) are provided in conjunction with the concentration chamber (5); the three negative pressure tubes (10) all penetrate the closed end of the tank body (1) and are connected to the concentration chamber (5); the three negative pressure tubes (10) are all located above the lower end surface of the connected concentration chamber (5); the ends of the three negative pressure tubes (10) away from the concentration chamber (5) are all connected to a negative pressure main tube (16), and the opening of the negative pressure main tube (16) is arranged vertically upward.

5. The heating and concentrating phosphorous acid device according to claim 1, characterized in that: The exhaust pipe (8) is located at an end away from the cover plate (2), and the exhaust pipe (8) passes through the outer wall of the tank body (1) and is connected to the heating chamber (4).

6. The heating and concentrating phosphorous acid device according to claim 2, characterized in that: The steam inlet pipe (7) is located at one end close to the cover plate (2), and three steam inlet pipes (7) are provided in cooperation with the concentration chamber (5). The three steam inlet pipes (7) all penetrate the outer wall of the tank body (1) and are connected to the heating chamber (4). The ends of the three steam inlet pipes (7) away from the heating chamber (4) are all connected to a steam inlet main pipe (17), and the openings of the steam inlet main pipes (17) are arranged vertically downward.

7. The heating and concentrating phosphorous acid device according to claim 2, characterized in that: Three nitrogen pipes (9) are arranged on the cover plate (2) in coordination with the concentration chamber (5), and the three nitrogen pipes (9) all penetrate the cover plate (2) and are connected to the concentration chamber (5).

8. The heating and concentrating phosphorous acid device according to claim 1, characterized in that: A drainage pipe (15) is provided on the lower end surface of the tank body (1), and the drainage pipe (15) is located at an end away from the cover plate (2). The drainage pipe (15) penetrates the outer wall of the tank body (1) and is connected to the heating chamber (4).

9. The heating and concentrating phosphorous acid device according to claim 8, characterized in that: A plurality of hinged seats (11) are fixedly provided on a side of the lower end surface of the tank body (1) close to the drain pipe (15), each hinged seat (11) is hingedly connected to a support rod (12), and one end of the support rod (12) away from the hinged seat (11) is fixedly connected to a bottom plate (13). A hinged seat (18) is fixedly provided on a side of the lower end surface of the tank body (1) close to the cover plate (2), a telescopic assembly is hingedly connected to the hinged seat (18), and one end of the telescopic assembly away from the tank body (1) is hingedly connected to a hinged seat (20), and the hinged seat (20) is fixedly provided on the bottom plate (13).

10. The heating and concentrating phosphorous acid device according to claim 9, characterized in that: The telescopic assembly comprises an oil cylinder (14) and a piston rod (19); the oil cylinder (14) and an articulated seat three (20) are articulated; the piston rod (19) and an articulated seat two (18) are articulated; and the piston rod (19) and the inner cavity of the oil cylinder (14) are slidably connected.

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