Horizontal gas-liquid reaction kettle

Abstract

The utility model discloses a horizontal gas-liquid reaction kettle, which is characterized in that a gas header pipe arranged along the length direction of a reaction kettle main body is transversely fixed at the upper part in the reaction kettle main body, and a plurality of baffles which are staggered up and down are arranged in the reaction kettle main body between a feed port and a discharge port; an ejector is mounted at the upper part of any or more reaction cavities; and a circulating port is communicated with the bottom of the reaction kettle main body below the ejector. The reaction kettle has the advantages that gas sent by the gas inlet pipe is distributed to each gas branch pipe through the gas main pipe and then is introduced into feed liquid at the lower part of the reaction kettle main body through the gas branch pipes for direct contact reaction, and the feed liquid at the lower part of the reaction kettle main body is discharged through the circulating port, then is sprayed into the reaction kettle main body through the ejector and is subjected to reverse contact reaction with rising gas flow; the reaction is more sufficient; and the feed liquid is baffled from one end to the other end through the blocking of the plurality of baffles, so that the reaction is more sufficient, continuous feeding and continuous discharging are realized, continuous reaction can be realized, and the production efficiency is favorably improved.

Description

Technical field:

[0001] The utility model relates to the technical field of solid waste recovery in aluminum electrolysis plants, in particular to a horizontal gas-liquid reaction kettle. Background technology:

[0002] An alkaline leaching process has been developed to extract valuable metal resources such as Li, Na, and K from solid wastes such as electrolytes, carbon slag, and overhaul slag from aluminum electrolysis plants. After the solid wastes are crushed to a certain particle size, they are leached using alkaline calcium at 70-80°C to produce calcium fluoride (solid), sodium calcium aluminum double salt (solid), and a mixed solution of sodium hydroxide and lithium (NaOH+LiOH).

[0003] The sodium hydroxide lithium solution after alkali leaching and filtration needs to be introduced with carbon dioxide gas to make the sodium hydroxide lithium solution react quickly to generate sodium carbonate liquid and lithium carbonate solid precipitation; a small amount of aluminum and fluorine in the sodium hydroxide lithium solution is converted into cryolite and aluminum hydroxide precipitation, and this process is an exothermic reaction and needs to be cooled. The existing gas-liquid reactor is mainly a vertical equipment, which uses gas-liquid countercurrent contact to realize the reaction process, and then an external circulating pump is configured to realize the cyclic reaction. However, the vertical reaction equipment has a short process, insufficient reaction, and the solution can only be discharged from the bottom after the cyclic reaction is completed, and continuous reaction cannot be achieved, which restricts production efficiency. Utility model content:

[0004] The utility model aims to provide a horizontal gas-liquid reaction kettle.

[0005] The utility model is implemented by the following technical scheme: a horizontal gas-liquid reactor, which comprises a reactor body arranged transversely, a feed port is arranged at the top of one end of the reactor body, a discharge port is arranged at the bottom of the other end of the reactor body, and a safety valve is arranged at the top of the reactor body; a gas main pipe arranged along the length direction is transversely fixed above the interior of the reactor body, a plurality of gas branch pipes are connected at the lower part of the gas main pipe, the outlets of the gas branch pipes extend to the lower part of the reactor body, and a gas main pipe connected to the reactor body is arranged at the upper part of the gas main pipe. An air inlet pipe connected to the outside; a plurality of baffles arranged alternately up and down are provided inside the reactor body between the feed port and the discharge port, and both ends of the baffles are fixed to the inner wall of the reactor body; an air flow channel is reserved between the top of the upper baffle and the top of the reactor body, and the bottom end of the lower baffle is connected to the bottom of the reactor body; the baffle divides the interior of the reactor body into a plurality of reaction chambers, an ejector is installed on the upper part of any or a plurality of the reaction chambers, and a circulation port is connected to the bottom of the reactor body below the ejector.

[0006] Furthermore, the circulation port is communicated with an inlet pipeline of a circulation pump, and an outlet of the circulation pump is communicated with an inlet pipeline of the ejector.

[0007] Furthermore, a pressure detection port and / or a manhole is provided on the top of the reactor body.

[0008] Furthermore, a first discharge pipe and a second discharge pipe are connected to the discharge port, a first discharge pipe is installed with a first discharge valve, and a second discharge pipe is installed with a second discharge valve.

[0009] Furthermore, a first liquid level controller is installed in the reaction chamber above the discharge port, and the first liquid level controller is connected to the second discharge valve.

[0010] Furthermore, a second liquid level controller is installed in the reaction chamber above the discharge port, and the second liquid level controller is connected to an alarm.

[0011] Furthermore, the gas main pipe is arranged on the top of the baffle above.

[0012] Furthermore, the injector is arranged at an angle, and the outlet of the injector extends to the middle of the reactor body.

[0013] Furthermore, a cooling structure is provided outside the reactor body.

[0014] Furthermore, the cooling structure is a cooling jacket arranged on the outer wall of the reactor body, or a spray pipe for spraying cooling water onto the outer wall of the reactor body.

[0015] The utility model has the following advantages: the gas sent from the air inlet pipe is distributed to each gas branch pipe through the gas main pipe, and then passes into the feed liquid at the lower part of the reactor body through the gas branch pipe, directly contacts and reacts, and the feed liquid at the lower part of the reactor body is discharged through the circulation port and then sprayed into the interior of the reactor body through the ejector, and contacts and reacts with the rising air flow in the reverse direction, so that the reaction is more complete; and the feed liquid is blocked by multiple baffles and deflected from one end to the other end, so that the reaction is more complete, and continuous feeding and continuous discharging are realized, so that continuous reaction can be realized, which helps to improve production efficiency. Description of the drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 for Figure 1 AA section view.

[0018] Figure 3 for Figure 1 BB cross-sectional view.

[0019] Reactor body 1, feed port 2, discharge port 3, gas main pipe 4, gas branch pipe 5, air inlet pipe 6, baffle 7, air flow channel 8, reaction chamber 9, ejector 10, circulation port 11, circulation pump 12, safety valve 13, pressure detection port 14, manhole 15, first discharge pipe 16, second discharge pipe 17, first discharge valve 18, second discharge valve 19, first liquid level controller 20, second liquid level controller 21, alarm 22, liquid level meter 23. Specific implementation method:

[0020] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] like Figures 1 to 3 As shown, a horizontal gas-liquid reactor comprises a reactor body 1 arranged transversely, and a pressure detection port 14 and / or a manhole 15 are arranged on the top of the reactor body 1; in order to facilitate the detection of the pressure and maintenance of the reactor body 1, in this embodiment, two safety valves 13, a pressure detection port 14 and five manholes 15 are arranged on the top of the reactor body 1.

[0022] A feed port 2 is provided at the top of one end of the reactor body 1, a safety valve 13 is provided at the top of the reactor body 1, and a discharge port 3 is provided at the bottom of the other end of the reactor body 1; the feed liquid enters the interior of the reactor body 1 through the feed port 2; a liquid level gauge 23 connected to the interior of the reactor body 1 is installed on the outside of the reactor body 1, and the liquid level information inside the reactor body 1 can be directly obtained through the liquid level gauge 23. A gas main pipe 4 arranged along the length direction is transversely fixed above the interior of the reactor body 1, and a plurality of gas branch pipes 5 are connected to the lower part of the gas main pipe 4. The outlets of the gas branch pipes 5 extend to the lower part of the reactor body 1, and an air inlet pipe 6 connected to the outside of the reactor body 1 is arranged at the upper part of the gas main pipe 4; after the gas enters the gas main pipe 4 through the air inlet pipe 6, it is sent to the lower part of the reactor body 1 through each gas branch pipe 5, and enters from the lower part of the reactor body 1 to mix with the feed liquid for reaction; when the pressure in the reactor body 1 exceeds the set pressure value, the safety valve 13 is used to release the pressure and exhaust the gas to maintain the air pressure of the reactor 1 within a normal range.

[0023] A plurality of baffles 7 are arranged in an up-and-down staggered manner inside the reactor body 1 between the feed port 2 and the discharge port 3, and the two ends of the baffles 7 are fixed to the inner wall of the reactor body 1; a gas flow channel 8 is reserved between the top of the upper baffle 7 and the top of the reactor body 1, and the bottom of the lower baffle 7 is connected to the bottom of the reactor body 1. A separate fixing frame can be provided to fix the gas main pipe 4 inside the reactor body 1, or as shown in this embodiment, the gas main pipe 4 is arranged on the top of the upper baffle 7, and the baffle 7 provides support for the gas main pipe 4. The baffle 7 divides the interior of the reactor body 1 into a plurality of reaction chambers 9, and an ejector 10 is installed on the upper part of any or a plurality of reaction chambers 9. A circulation port 11 is connected to the bottom of the reactor body 1 below the ejector 10, and the circulation port 11 is connected to the inlet pipeline of the circulation pump 12, and the outlet of the circulation pump 12 is connected to the inlet pipeline of the ejector 10; the ejector 10 is arranged obliquely, and the outlet of the ejector 10 extends to the middle of the reactor body 1. In this embodiment, there are 4 baffles arranged in an up-and-down staggered manner, which divide the interior of the reactor body 1 into 5 reaction chambers 9. Each reaction chamber 9 is provided with an ejector 10, a circulation port 11 and a circulation pump 12. The circulation pump 12 pumps the liquid in the reaction chamber 9 out through the circulation port 11 and then sprays it into the interior of the reactor body 1 through the ejector 10, so as to realize the circulation of the liquid. The gas fed into the reactor body 1 directly mixes and reacts with the liquid in the lower part of the reactor body 1, and then rises to the upper part of the reactor body 1. When the ejector 10 ejects the liquid, the pressure inside the ejector 10 decreases, and the gas in the upper part of the reactor 1 is sucked in through the air extraction hole on the ejector 10. The sucked gas is mixed with the liquid in the ejector 10, and then the ejected liquid is rolled in the reactor 1 along the inner wall of the reactor 1 through a certain injection angle, so that the mixing is more uniform and the reaction is more complete.

[0024] After the feed liquid enters from one end of the reactor body 1, it flows backward through the baffles arranged in an up-and-down staggered manner, and is finally discharged through the discharge port 3, thereby extending the reaction process and realizing continuous reaction. In order to reduce the temperature of the reactor body 1, a cooling structure (not shown in the figure) is arranged outside the reactor body 1. The cooling structure is a cooling jacket (not shown in the figure) arranged on the outer wall of the reactor body 1, or a spray pipe (not shown in the figure) for spraying cooling water on the outer wall of the reactor body 1. The cooling structure in this embodiment is a cooling jacket.

[0025] The first discharge pipe 16 and the second discharge pipe 17 are connected to the discharge port 3, the first discharge pipe 16 is installed with a first discharge valve 18, and the second discharge pipe 17 is installed with a second discharge valve 19. Among them, the first discharge valve 18 is a normally open valve, and the material in the reactor body 1 is discharged through the first discharge pipe 16; when the liquid level in the reactor body 1 is too high, the second discharge valve 19 is opened, and the material is discharged through the double pipes to increase the discharge amount to achieve the purpose of controlling the liquid level. Preferably, a first liquid level controller 20 is installed in the reaction chamber 9 above the discharge port 3, and the first liquid level controller 20 is connected to the second discharge valve 19. The liquid level in the reactor body 1 can be detected by the first liquid level controller 20. When it is detected that the liquid level inside the reactor body 1 reaches the set maximum liquid level, the second discharge valve 19 is opened to discharge the material. When the liquid level drops to the set minimum liquid level, the second discharge valve 19 is closed to stop the discharge of the second discharge pipe 17. A second liquid level controller 21 is installed in the reaction chamber 9 above the discharge port 3, and the second liquid level controller 21 is connected to an alarm 22. When the liquid level in the reactor body 1 is lower than the lowest liquid level set by the second liquid level controller 21 or higher than the highest liquid level set by the second liquid level controller 21, the alarm 22 sounds an alarm to indicate an abnormality.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A horizontal gas-liquid reactor, characterized in that: It comprises a reactor body arranged transversely, a feed port is arranged at the top of one end of the reactor body, a discharge port is arranged at the bottom of the other end of the reactor body, and a safety valve is arranged at the top of the reactor body; a gas main pipe arranged along the length direction is transversely fixed above the interior of the reactor body, a plurality of gas branch pipes are connected at the lower part of the gas main pipe, the outlets of the gas branch pipes extend to the lower part of the reactor body, and an air inlet pipe connected to the outside of the reactor body is arranged at the upper part of the gas main pipe; a plurality of baffles arranged alternately up and down are arranged inside the reactor body between the feed port and the discharge port, and the two ends of the baffles are fixed to the inner wall of the reactor body; an air flow channel is reserved between the top of the baffle and the top of the reactor body, and the bottom of the baffle is connected to the bottom of the reactor body; the baffle divides the interior of the reactor body into a plurality of reaction chambers, an ejector is installed at the upper part of any or a plurality of the reaction chambers, and a circulation port is connected at the bottom of the reactor body below the ejector.

2. A horizontal gas-liquid reactor according to claim 1, characterized in that: The circulation port is communicated with an inlet pipeline of a circulation pump, and the outlet of the circulation pump is communicated with an inlet pipeline of the ejector.

3. A horizontal gas-liquid reactor according to claim 1, characterized in that: A pressure detection port and / or a manhole is arranged on the top of the reactor body.

4. A horizontal gas-liquid reactor according to claim 1, characterized in that: The discharge port is connected with a first discharge pipe and a second discharge pipe, the first discharge pipe is equipped with a first discharge valve, and the second discharge pipe is equipped with a second discharge valve.

5. A horizontal gas-liquid reactor according to claim 4, characterized in that: A first liquid level controller is installed in the reaction chamber above the discharge port, and the first liquid level controller is connected to the second discharge valve.

6. A horizontal gas-liquid reactor according to claim 4, characterized in that: A second liquid level controller is installed in the reaction chamber above the discharge port, and the second liquid level controller is connected to an alarm.

7. A horizontal gas-liquid reactor according to claim 1, characterized in that: The gas main pipe is arranged on the top of the upper baffle.

8. A horizontal gas-liquid reactor according to claim 1, characterized in that: The injector is arranged obliquely, and the outlet of the injector extends to the middle of the reactor body.

9. A horizontal gas-liquid reactor according to claim 1, characterized in that: A cooling structure is arranged outside the reactor body.

10. A horizontal gas-liquid reactor according to claim 9, characterized in that: The cooling structure is a cooling jacket arranged on the outer wall of the reactor body, or a spray pipe for spraying cooling water onto the outer wall of the reactor body.

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