Flushing device for sodium hypochlorite falling film reactor

Abstract

The utility model relates to the field of falling film reactor flushing devices, and provides a sodium hypochlorite falling film reactor flushing device which comprises a flushing water pipe and a flushing spray head, the flushing water pipe is installed on a falling film reactor and extends to the position above a falling film head, the flushing water pipe is provided with a conveying pump, and the conveying pump is used for conveying external water to the water pipe; and the flushing nozzle is mounted at the end part, positioned in the falling film reactor, of the flushing water pipe. The falling-film head cleaning device has the effect of more conveniently and simply cleaning the falling-film head of the falling-film reactor.

Description

Technical Field

[0001] The present application relates to the field of falling film reactor flushing devices, and in particular to a sub-sodium falling film reactor flushing device. Background Art

[0002] The falling film reactor mainly uses the interaction between gas and fluid in a vertical pipe to transfer gas, liquid or one of its components between materials. The reaction process of the falling film reactor is as follows: the liquid flows into the reactor from the top, and forms a liquid film on the film tube when it flows downward through the falling film head located at the top of the falling film tube; while the gas flows downward from the top of the falling film tube, a reaction occurs at the liquid film, and the generated reactants flow downward.

[0003] Falling film reactors are suitable for instantaneous or fast reaction systems with high thermal effects, and the reaction of caustic soda and chlorine is an exothermic fast reaction. In addition, falling film reactors are smaller in size than tower reactors and kettle reactors. Therefore, falling film reactors are often used in sodium reactions in industry.

[0004] However, since salt is generated during the sodium reduction reaction and the reaction temperature is too high, the salt generated by the reaction forms salt scale at high temperature. Salt scale tends to accumulate at the falling film head, resulting in poor liquid film formation and uneven reaction, which in turn leads to substandard sodium reduction products.

[0005] Therefore, after the falling film head is salted, it is necessary to stop the falling film reactor, disassemble the head, and then clean the falling film head. However, the disassembly process is time-consuming and labor-intensive, and affects production efficiency. Utility Model Content

[0006] In order to clean the falling film head of a falling film reactor more conveniently and simply, the present application provides a flushing device for a sub-sodium falling film reactor.

[0007] The present application provides a sub-sodium falling film reactor flushing device adopts the following technical solution:

[0008] A flushing device for a sub-sodium falling film reactor comprises a flushing water pipe and a flushing nozzle. The flushing water pipe is installed in the falling film reactor and extends to above the falling film head. The flushing water pipe is installed with a delivery pump, and the delivery pump is used to deliver external water to the water pipe; the flushing nozzle is installed at the end of the flushing water pipe located in the falling film reactor.

[0009] By adopting the above technical scheme, when the falling film head is blocked by salt accumulation, water is delivered to the flushing water pipe through the delivery pump, and the flushing water in the flushing water pipe flows out from the flushing nozzle to flush the falling film head located below the flushing nozzle; thereby, the flushing device is directly installed on the falling film reactor, which is simple to operate and saves time compared to the existing method of first disassembling the head and then flushing the falling film head.

[0010] Optionally, the flushing nozzle includes a flushing main pipe, a flushing branch pipe and a flushing circular pipe, the flushing main pipe is connected to the flushing water pipe; a plurality of flushing branch pipes are provided, and the plurality of flushing branch pipes are all connected to the flushing water pipe; the flushing circular pipe is arranged around the central axis of the falling film reactor, and the flushing circular pipe is connected to the flushing water pipe; the falling film head is located within the horizontal projection of the flushing circular pipe.

[0011] By adopting the above technical solution, the entire flushing nozzle has a larger flushing area, so as to facilitate comprehensive cleaning of the falling film head.

[0012] Optionally, the main flushing pipe, the plurality of branch flushing pipes and the circular flushing pipe are all arranged horizontally, the main flushing pipe is a straight pipe, and the plurality of branch flushing pipes are all straight pipes.

[0013] By adopting the above technical solution, on the one hand, the flow path of the flushing water at the flushing nozzle is shortened, thereby improving the cleaning efficiency; on the other hand, the mass of the flushing nozzle is also reduced, thereby facilitating installation.

[0014] Optionally, the middle parts of the plurality of flushing branch pipes are connected to the flushing main pipe, the plurality of flushing branch pipes are arranged at equal intervals along the length direction of the flushing main pipe, and the ends of the flushing branch pipes are used to communicate with the flushing circular pipe.

[0015] By adopting the above technical scheme, a connection is established between the flushing circular pipe and the flushing main pipe by using a flushing branch pipe. When flushing the falling film head, the flushing water first enters the flushing main pipe, then enters each flushing branch pipe from the flushing main pipe, and finally enters the flushing circular pipe from the flushing branch pipe. The pipe walls and ends of each flushing pipe (flushing main pipe, flushing branch pipe and flushing circular pipe) are reasonably utilized to facilitate the production and manufacturing of the flushing nozzle.

[0016] Optionally, the multiple water outlet holes arranged on the flushing main pipe are divided into multiple groups, and the multiple water outlet holes in each group are arranged at intervals along the length direction of the flushing main pipe; the water outlet direction of one group of water outlet holes is directed directly downward, and the water outlet directions of the remaining multiple groups of water outlet holes have an angle with the vertical direction.

[0017] By adopting the above technical solution, multi-angle flushing of the falling film head can be achieved, thereby enhancing the cleaning effect.

[0018] Optionally, the delivery pump is a booster pump, and the flushing water pipe is also provided with an automatic regulating valve and a remote pressure gauge.

[0019] By adopting the above technical solution, the delivery pump is set as a booster pump to increase the impact force of the flushing water and ensure the flushing effect; the remote pressure gauge is used to monitor the pressure water pressure, on the one hand to ensure that the salt deposits on the falling film head are effectively flushed, and on the other hand to ensure the safety of the flushing process; the flow rate of the flushing water is controlled by the automatic regulating valve, which can more flexibly adjust the flow rate of the flushing water and further improve the convenience of the flushing operation.

[0020] Optionally, the end of the flushing water pipe away from the flushing nozzle is connected to a liquid inlet channel, and the flushing nozzle is detachably connected to the liquid inlet channel via a flange.

[0021] By adopting the above technical solution, it is easy to disassemble the flushing water pipe and the flushing nozzle, thereby facilitating the maintenance of the flushing device.

[0022] Optionally, the flushing water pipe includes a flexible corrugated section and rigid sections arranged at both ends of the corrugated section; the flushing nozzle is connected to a pull rope, and the end of the pull rope away from the flushing nozzle is connected to an adjustment component; the adjustment component includes a base, a rotating shaft and a drive motor, the rotating shaft is rotatably connected to the base, and the pull rope is connected to the rotating shaft; the drive motor is connected to the base, the drive motor is used to drive the rotating shaft to rotate, and the drive motor is electrically connected to the control terminal; the adjustment component is installed on the top of the falling film reactor.

[0023] By adopting the above technical scheme, the angle of the flushing nozzle can be adjusted by pulling the rope, so as to carry out a more comprehensive cleaning of the film falling head and improve the cleaning effect; when it is necessary to adjust the angle of the flushing nozzle by pulling the rope, start the drive motor, and use the drive motor to drive the rotating shaft to rotate forward or reverse, thereby driving the pull rope to be gathered or released. The structure is simple and easy to operate.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up a flushing water pipe and a flushing nozzle, the falling film head is flushed above the falling film head to improve the convenience of cleaning the falling film head;

[0026] 2. By setting three groups of water outlet holes in the flushing pipe, the falling film head can be flushed at multiple angles to enhance the flushing effect;

[0027] 3. By making the flushing water pipe bendable and connecting a pull rope to the flushing nozzle, the flushing angle of the flushing nozzle can be adjusted, further increasing the flushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of Example 1 of the present application.

[0029] Figure 2It is a schematic diagram for showing the structure of the flushing nozzle in Example 1.

[0030] Figure 3 It is a schematic diagram for showing the location of the water outlet in Example 1.

[0031] Figure 4 It is a structural diagram of Example 2 of the present application.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Flushing water pipe; 11. Delivery pump; 12. Automatic regulating valve; 13. Remote pressure gauge; 14. Flange; 15. Corrugated section; 16. Rigid section; 2. Flushing nozzle; 21. Flushing main pipe; 22. Flushing branch pipe; 23. Flushing circular pipe; 24. Water outlet; 25. Pull rope; 3. Liquid inlet channel; 4. Adjustment assembly; 41. Base; 42. Rotating shaft; 43. Driving motor; 5. Falling film reactor; 51. Falling film head. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The embodiment of the present application discloses a flushing device for a sub-sodium falling film reactor.

[0035] Example 1

[0036] Reference Figure 1 A flushing device for a sub-sodium falling film reactor 5 includes a flushing water pipe 1 and a flushing nozzle 2.

[0037] The flushing water pipe 1 is connected to the top of the falling film reactor 5 and the end thereof extends into the falling film reactor 5. The flushing nozzle 2 is connected to the end of the flushing water pipe 1 and is located above the falling film head 51. The end of the flushing water pipe 1 away from the flushing nozzle 2 is detachably connected to the liquid inlet channel 3 through a flange 14. A delivery pump 11, an automatic regulating valve 12 and a remote pressure gauge 13 are arranged around the liquid inlet channel 3.

[0038] When the falling film head 51 is clogged by salt deposition, flushing water is delivered from the liquid inlet channel 3 to the flushing water pipe 1 through the delivery pump 11, and the flushing water in the flushing water pipe 1 flows out from the flushing nozzle 2 to flush the falling film head 51 located below the flushing nozzle 2; thereby, the flushing device is directly installed on the falling film reactor 5, which is simple to operate and saves time compared to the existing method of first disassembling the head and then flushing the falling film head 51.

[0039] In this embodiment, the delivery pump 11 is a booster pump so that the flushing water has a greater impact force to ensure the flushing effect; the remote pressure gauge 13 is used to monitor the water pressure, on the one hand to ensure that the salt deposits on the falling film head 51 are effectively flushed, and on the other hand to ensure the safety during the flushing process; the flow rate of the flushing water is controlled by the automatic regulating valve 12, and the flow rate of the flushing water can be adjusted more flexibly, further improving the convenience of the flushing operation.

[0040] Reference Figure 1 and Figure 2 Specifically, the flushing nozzle 2 includes a flushing main pipe 21, a flushing branch pipe 22 and a flushing circular pipe 23. The flushing main pipe 21 is a straight pipe and is arranged horizontally. The flushing branch pipe 22 is a straight pipe and is arranged horizontally. There are multiple flushing branch pipes 22, and the multiple flushing branch pipes 22 are all connected to the flushing main pipe 21 and communicate with the flushing main pipe 21. The multiple flushing branch pipes 22 are arranged on both sides of the flushing main pipe 21.

[0041] The multiple flushing branches 22 on each side of the flushing main pipe 21 are arranged at equal intervals along the length direction of the flushing main pipe 21. The ends of the flushing branches 22 away from the flushing main pipe 21 are used to communicate with the flushing circular pipe 23, which is arranged around the central axis of the flushing water pipe 1, and the film falling head 51 is located in the horizontal projection of the flushing circular pipe 23. Thus, the entire flushing nozzle 2 has a flushing area sufficient to cover the film falling head 51, so as to facilitate comprehensive cleaning of the film falling head 51.

[0042] Reference Figure 3 It can be understood that the walls of the flushing main pipe 21, the flushing branch pipe 22 and the flushing circular pipe 23 are all penetrated with water outlet holes 24 for water outlet. In this embodiment, each flushing pipe (referring to the flushing main pipe 21, the flushing branch pipe 22 and the flushing circular pipe 23) is provided with three groups of water outlet holes 24, and the multiple water outlet holes 24 in each group of water outlet holes 24 are arranged at intervals along the length direction of the flushing pipe, and the water outlet direction of one group of water outlet holes 24 is directly downward, and the water outlet directions of the other two groups of water outlet holes 24 are toward the two sides of the conveying pipe, and the angle is approximately 45 degrees, so as to achieve multi-angle flushing of the falling film head 51 and improve the flushing effect.

[0043] In other embodiments, the water outlet holes 24 may also be provided in four or five groups, as long as water outlets at different angles can be achieved in one flushing pipe.

[0044] The implementation principle of Example 1 is: after the falling film head 51 forms salt, the booster pump is started, the automatic regulating valve 12 is opened, and flushing water is sent to the flushing water pipe 1; the flushing water flows from the flushing water pipe 1 into the flushing main pipe 21, the flushing branch pipe 22 and the flushing circular pipe 23 in sequence, and finally flows out from the water outlet 24 to flush the falling film head, thereby realizing convenient and simple cleaning of the falling film head and improving the cleaning efficiency.

[0045] Example 2

[0046] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the flushing water pipe 1 includes a flexible corrugated section 15 and rigid sections 16 disposed at both ends of the corrugated section 15. The flushing circular tube 23 is connected to a plurality of pull ropes 25, which are arranged at intervals along the length direction of the flushing circular tube 23.

[0047] The end of the pull rope 25 away from the flushing nozzle 2 is connected to the adjustment assembly 4. The adjustment assembly 4 includes a base 41, a rotating shaft 42 and a driving motor 43. The rotating shaft 42 is rotatably connected to the base 41, and the pull rope 25 is connected to the side wall of the rotating shaft 42. The driving motor 43 is installed on the base 41, and the output shaft of the driving motor 43 is connected to the rotating shaft 42.

[0048] The implementation principle of Example 2 is as follows: depending on the salt accumulation of the falling film head 51, it may be necessary to adjust different flushing angles for cleaning. When adjusting the angle, the drive motor 43 at the corresponding position is started according to the required flushing angle, and the drive motor 43 drives the rotating shaft 42 to rotate, and the pull rope 25 is gathered at the rotating shaft 42 or released, so that the flushing water pipe 1 can be bent at the position of the corrugated section 15, thereby realizing the change of the flushing angle. The structure is simple and easy to operate.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sub-sodium falling film reactor flushing device, characterized in that: The invention comprises a flushing water pipe (1) and a flushing nozzle (2), wherein the flushing water pipe (1) is installed in a falling film reactor (5) and extends to the top of the falling film head (51), and the flushing water pipe (1) is installed with a delivery pump (11), and the delivery pump (11) is used to deliver flushing water to the water pipe; the flushing nozzle (2) is installed at the end of the flushing water pipe (1) located inside the falling film reactor (5).

2. A sub-sodium falling film reactor flushing device according to claim 1, characterized in that: The flushing nozzle (2) comprises a flushing main pipe (21), a flushing branch pipe (22) and a flushing circular pipe (23); the flushing main pipe (21) is connected to the flushing water pipe (1); a plurality of flushing branch pipes (22) are provided, and the plurality of flushing branch pipes (22) are all connected to the flushing water pipe (1); the flushing circular pipe (23) is arranged around the central axis of the falling film reactor (5), and the flushing circular pipe (23) is connected to the flushing water pipe (1); the falling film head (51) is located within the horizontal projection of the flushing circular pipe (23); the flushing main pipe (21), the flushing branch pipe (22) and the flushing circular pipe (23) are all provided with a plurality of water outlet holes (24).

3. A sub-sodium falling film reactor flushing device according to claim 2, characterized in that: The main flushing pipe (21), the plurality of branch flushing pipes (22) and the circular flushing pipe (23) are all arranged horizontally; the main flushing pipe (21) is a straight pipe, and the plurality of branch flushing pipes (22) are all straight pipes.

4. A sub-sodium falling film reactor flushing device according to claim 3, characterized in that: A plurality of flushing branch pipes (22) are arranged on both sides of the flushing main pipe (21); the ends of the flushing branch pipes (22) away from the flushing main pipe (21) are used to communicate with the flushing circular pipe (23).

5. A sub-sodium falling film reactor flushing device according to claim 2, characterized in that: The plurality of water outlet holes (24) disposed on the flushing main pipe (21) are divided into a plurality of groups, and the plurality of water outlet holes (24) in each group are arranged at intervals along the length direction of the flushing main pipe (21); the water outlet direction of one group of the water outlet holes (24) is directed directly downward, and the water outlet directions of the remaining plurality of groups of the water outlet holes (24) have an angle with the vertical direction.

6. A sub-sodium falling film reactor flushing device according to claim 1, characterized in that: The delivery pump (11) is a booster pump, and the flushing water pipe (1) is also provided with an automatic regulating valve (12) and a remote pressure gauge (13).

7. A sub-sodium falling film reactor flushing device according to claim 1, characterized in that: The end of the flushing water pipe (1) away from the flushing nozzle (2) is connected to a liquid inlet channel (3), and the flushing nozzle (2) is detachably connected to the liquid inlet channel (3) via a flange (14).

8. A sub-sodium falling film reactor flushing device according to claim 2, characterized in that: The flushing water pipe (1) comprises a flexible corrugated section (15) and rigid sections (16) arranged at both ends of the corrugated section (15); the flushing nozzle (2) is connected to a plurality of pull ropes (25); the ends of the pull ropes (25) away from the flushing nozzle (2) are connected to an adjustment assembly (4); the adjustment assembly (4) comprises a base (41), a rotating shaft (42) and a drive motor (43); the rotating shaft (42) is rotatably connected to the base (41), and the pull ropes (25) are connected to the rotating shaft (42); the drive motor (43) is connected to the base (41), the drive motor (43) is used to drive the rotating shaft (42) to rotate, and the drive motor (43) is electrically connected to a control terminal; the adjustment assembly (4) is installed on the top of the falling film reactor (5).

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