Mononitrobenzene nitration liquid separation tower
By designing a nitrification liquid separation tower using stacked separators, and using gravity and material density difference for self-separation, the problem of increasing equipment number and energy consumption in the prior art is solved, and an efficient and energy-saving separation effect is achieved.
Patent Information
- Application Number
- CN202421866993.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The existing nitrified liquid separation towers require secondary separation, resulting in an increase in the number of equipment, an expansion of the area of the area, and an increase in energy consumption, which cannot achieve the purpose of energy saving, consumption reduction and maximizing production efficiency.
A mononitrobenzene nitration liquid separation tower is designed, using a stacked first separator and a second separator, which separates itself through the difference in gravity and material density to reduce the equipment footprint and energy consumption.
Through multiple separations, the equipment footprint is reduced, energy consumption is reduced, and separation efficiency is improved.
Smart Images
Figure CN222854687U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to a nitrobenzene nitration liquid separation tower. Background Art
[0002] The nitration liquid separation tower is a device used to treat wastewater containing nitrates. Its main function is to separate and treat nitrates from other substances in the wastewater to achieve the purpose of purifying the wastewater. The nitration liquid separation tower usually uses physical, chemical or biological methods to achieve the separation and treatment of nitrates. The nitration liquid separation tower usually consists of an inlet, a separation device, a treatment device and an outlet. The wastewater first enters the separation tower through the inlet, and then is treated by the separation device to separate the nitrates from other substances. The separated nitrates may be further treated by chemical reactions, filtration, precipitation and other methods to remove them from the wastewater or convert them into harmless substances. The final treated wastewater will be discharged from the outlet to meet the discharge standards or further recycled. The nitration liquid separation tower is widely used in industrial wastewater treatment, urban sewage treatment, agricultural wastewater treatment and other fields, and can effectively purify wastewater and protect the environment. Different nitration liquid separation tower equipment may use different processes and technologies to meet different wastewater treatment needs.
[0003] The existing conventional vertical or horizontal gravity separators occupy a large area, and the separation effect in one time often fails to meet the requirements. In order to ensure a higher separation quality, two separations are required, and two sets of separators are used to achieve the separation quality requirements, which increases the number of equipment, increases the floor space, increases the number of pumps used, and increases energy consumption, and fails to meet the requirements of energy saving and consumption reduction, and fails to achieve the purpose of maximizing production efficiency. Utility Model Content
[0004] The utility model aims to provide a nitrobenzene nitration liquid separation tower to solve the technical problems that the existing nitration liquid needs secondary separation, increases the number of equipment, increases the floor space and increases energy consumption.
[0005] The embodiments of the present invention are implemented by the following technical solutions:
[0006] A nitrobenzene nitration liquid separation tower comprises a stacked first separator for primary separation of nitration liquid and a second separator for secondary separation of nitration liquid, wherein the first separator is provided with a connecting pipe for conveying the upper layer product to the second separator by gravity, and the second separator is provided with an acid discharge pipe for discharging the lower layer waste acid by gravity.
[0007] Preferably, the first separator is provided with an inner ring plate for receiving the nitrating liquid and performing preliminary separation, and a first acid discharge port connected to the lower part of the inner ring plate for discharging the waste acid in the lower layer.
[0008] Preferably, the first separator is also provided with a weir groove for re-overflow separation of the upper layer product overflowing from the inner ring plate, and an overflow port for connecting to a connecting pipe is provided in the weir groove.
[0009] Preferably, the first separator is also provided with a reflux valve, an exhaust port, a first manhole, an inlet, a spare port, a buoy port and a float port for returning the waste acid at the outer bottom of the inner ring plate to the inner ring plate.
[0010] Preferably, the second separator comprises a product inlet for receiving the primary separation product, a product outlet provided at the top for discharging the secondary separation product, a second manhole and a sewage outlet.
[0011] Preferably, one end of the acid discharge pipe is connected to the bottom of the second separator, and the other end is connected to the second acid discharge port provided at the top of the second separator.
[0012] Preferably, the second separator is provided with a plurality of groups of diagonal support plates for supporting the first separator and pull rods for limiting the position.
[0013] With this technical solution, after the nitrification liquid enters the first separator, it falls into the inner ring plate and is first deposited. The upper layer product gradually overflows the inner ring plate. After a certain amount of waste acid in the lower layer accumulates, it is discharged through the first acid discharge port connected to the lower part of the inner ring plate. After the upper layer product overflowing the inner ring plate is accumulated again outside the inner ring plate, its upper layer product flows into the weir groove through overflow, and flows into the second separator through the overflow port of the weir groove and the connecting pipe.
[0014] The second separator mainly allows the obtained product to stand for a long time to settle to further separate the waste acid in the product, and the waste acid deposited at the bottom is pressed into the acid discharge pipe by pressure, and discharged through the second acid discharge port, and the long-standing product on the upper layer is discharged through the product outlet;
[0015] Through multiple separations of the first separator and the second separator, a product with higher purity can be obtained, and the first separator only performs a quick preliminary separation on the product and the waste acid. Its height is limited, and it is directly overlapped and installed on the second separator to perform preliminary separation on the product. After the preliminary separation, the product is then subjected to a long period of static separation. On the basis of improving the separation efficiency, the equipment footprint is reduced, and the energy consumption is reduced by self-separation through material density difference and gravity.
[0016] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:
[0017] 1. The utility model can obtain a product with higher purity through multiple separations of the first separator and the second separator;
[0018] 2. The utility model reduces the equipment footprint on the basis of improving separation efficiency;
[0019] 3. The utility model reduces energy consumption by separating materials by density difference and gravity. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A schematic cross-sectional view of a nitrobenzene nitration liquid separation tower provided in Example 1 of the utility model;
[0022] Figure 2 A partial enlarged structural schematic diagram of a nitrobenzene nitration liquid separation tower provided in Example 1 of the utility model;
[0023] Figure 3 A schematic diagram of a partial top view of the structure of a nitrobenzene nitration liquid separation tower provided in Example 2 of the utility model;
[0024] Icons: 1. First separator; 11. Exhaust port; 12. First acid discharge port; 13. Overflow port; 14. Connecting pipe; 15. First manhole; 16. Float port; 17. Reflux valve; 18. Float port; 19. Inlet; 191. Spare port; 2. Second separator; 21. Product inlet; 22. Product outlet; 23. Second manhole; 24. Second acid discharge port; 25. Acid discharge pipe; 26. Diagonal support plate; 27. Sewage outlet; 28. Pull rod; 31. Inner ring plate; 32. Weir. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0028] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 the present invention can be understood according to specific circumstances.
[0030] Example 1
[0031] A nitrobenzene nitration liquid separation tower comprises a stacked first separator 1 for primary separation of nitration liquid and a second separator 2 for secondary separation of nitration liquid, wherein the first separator 1 is provided with a connecting pipe 14 for conveying the upper layer product into the second separator 2 by gravity, and the second separator 2 is provided with an acid discharge pipe 25 for discharging the lower layer waste acid by gravity.
[0032] In this embodiment, the first separator 1 is provided with an inner ring plate 31 for receiving the nitrification liquid and performing preliminary separation, and a first acid discharge port 12 connected to the lower part of the inner ring plate 31 for discharging the waste acid in the lower layer.
[0033] In this embodiment, the first separator 1 is further provided with a weir 32 for re-separating the upper layer product overflowing from the inner ring plate 31 , and an overflow port 13 for connecting to a connecting pipe 14 is provided in the weir 32 .
[0034] In this embodiment, the second separator 2 includes a product inlet 21 for receiving the primary separation product, a product outlet 22 provided at the top for discharging the secondary separation product, a second manhole 23 and a sewage outlet 27 .
[0035] In this embodiment, the second separator 2 is provided with a plurality of groups of diagonal support plates 26 for supporting the first separator 1 and pull rods 28 for limiting position.
[0036] Working principle and usage:
[0037] During operation, after the nitrification liquid enters the first separator 1, it falls into the inner plate 31 and is first deposited. The upper layer product gradually overflows the inner plate 31. After a certain amount of waste acid in the lower layer accumulates, it is discharged through the first acid discharge port 12 connected to the lower part of the inner plate 31. After the upper layer product overflowing the inner plate 31 is accumulated again outside the inner plate 31, its upper layer product flows into the weir groove 32 through overflow, and flows into the second separator 2 through the overflow port 13 and the connecting pipe 14 of the weir groove 32.
[0038] The second separator 2 mainly allows the obtained product to stand for a long time to settle to further separate the waste acid in the product, and the waste acid deposited at the bottom is pressed into the acid discharge pipe 25 by pressure, and discharged through the second acid discharge port 24, and the long-standing product on the upper layer is discharged through the product outlet 22;
[0039] Through multiple separations of the first separator 1 and the second separator 2, a product with higher purity can be obtained, and the first separator 1 only performs a quick preliminary separation on the product and the waste acid. Its height is limited, and it is directly overlapped and installed on the second separator 2 to perform a preliminary separation on the product. After the preliminary separation, the product is then subjected to a long period of static separation. On the basis of improving the separation efficiency, the equipment footprint is reduced, and the energy consumption is reduced by self-separation through the density difference of the materials and gravity.
[0040] Example 2
[0041] The only difference between this embodiment and embodiment 1 is that, in this embodiment, the first separator 1 is also provided with a reflux valve 17, an exhaust port 11, a first manhole 15, an inlet 19, a spare port 191, a buoy port 18 and a float port 16 for returning the waste acid at the outer bottom of the inner ring plate 31 to the inner ring plate 31.
[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A mononitrobenzene nitration liquid separation tower, characterized in that: The invention comprises a stacked first separator (1) for primary separation of nitrifying liquid and a second separator (2) for secondary separation of nitrifying liquid, wherein the first separator (1) is provided with a connecting pipe (14) for conveying the upper layer product to the second separator (2) by gravity, and the second separator (2) is provided with an acid discharge pipe (25) for discharging the lower layer waste acid by gravity.
2. A mononitrobenzene nitration liquid separation tower according to claim 1, characterized in that: The first separator (1) is provided with an inner plate (31) for receiving the nitrification liquid and performing preliminary separation, and a first acid discharge port (12) connected to the lower part of the inner plate (31) for discharging the waste acid in the lower layer.
3. A mononitrobenzene nitration liquid separation tower according to claim 2, characterized in that: The first separator (1) is also provided with a weir (32) for re-separating the upper layer product overflowing from the inner ring plate (31), and an overflow port (13) for connecting to a connecting pipe (14) is provided in the weir (32).
4. A mononitrobenzene nitration liquid separation tower according to claim 2 or 3, characterized in that: The first separator (1) is also provided with a reflux valve (17) for returning the waste acid at the outer bottom of the inner ring plate (31) to the inner ring plate (31), an exhaust port (11), a first manhole (15), an inlet (19), a spare port (191), a buoy port (18) and a float port (16).
5. A mononitrobenzene nitration liquid separation tower according to any one of claims 1 to 3, characterized in that: The second separator (2) comprises a product inlet (21) for receiving the primary separation product, a product outlet (22) arranged at the top for discharging the secondary separation product, a second manhole (23) and a sewage outlet (27).
6. A mononitrobenzene nitration liquid separation tower according to any one of claims 1 to 3, characterized in that: One end of the acid discharge pipe (25) is connected to the bottom of the second separator (2), and the other end is connected to the second acid discharge port (24) provided at the top of the second separator (2).
7. A mononitrobenzene nitration liquid separation tower according to any one of claims 1 to 3, characterized in that: The second separator (2) is provided with a plurality of groups of diagonal support plates (26) for supporting the first separator (1) and pull rods (28) for limiting position.