Alkali metal recycling device

Abstract

The utility model discloses an alkali metal recycling device which comprises an alkali metal reaction kettle and an alkali metal filter, a discharge port is arranged at the top of the alkali metal reaction kettle, a feed port is arranged at the bottom of the alkali metal filter, and the discharge port is connected with the feed port of the alkali metal filter through a straight pipeline. An extension pipe is arranged at a discharge port of the alkali metal reaction kettle in the kettle, a first switch valve is arranged at a feed port of the alkali metal filter, a filter baffle used for intercepting alkali metal is arranged in the alkali metal filter and comprises a regular hexagonal baffle framework, an elastic filter screen is arranged on the lower surface of the baffle framework, and a second switch valve is arranged on the lower surface of the elastic filter screen. By utilizing the device disclosed by the utility model, the problems of raw material waste, high wastewater treatment cost and high safety risk in the post-treatment process of excessive alkali metal are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to an alkali metal recovery and reuse device. Background Art

[0002] Alkali metals are widely used in the fine chemical industry, such as the synthesis of organometallic compounds and as reducing agents to reduce other metals with important uses. Alkali metals have low density, low melting and boiling points, and high reactivity under standard conditions. They can react with oxygen and water in the air, directly form ionic compounds with many non-metallic elements, and react with many organic compounds. Some reactions require the input of excessive alkali metals, and their subsequent treatment processes often require filtering out the alkali metals, quenching them with water and other reagents, and finally converting them into salt solutions for wastewater treatment. This not only causes waste of raw materials and increases wastewater treatment costs, but also poses great safety risks.

[0003] At present, there are few reports on devices for recycling alkali metals. Therefore, the utility model proposes an alkali metal recycling device to effectively recover excess alkali metals. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an alkali metal recovery and reuse device to solve the problems of raw material waste, high wastewater treatment cost and high safety risk in the post-treatment process of excess alkali metal mentioned in the above background technology.

[0005] The technical solution of the utility model is as follows:

[0006] An alkali metal recovery and reuse device comprises an alkali metal reactor and an alkali metal filter, wherein a discharge port is arranged at the top of the alkali metal reactor, a feed port is arranged at the bottom of the alkali metal filter, the discharge port is connected to the feed port of the alkali metal filter through a straight pipe, an extension pipe is arranged at the discharge port of the alkali metal reactor in the reactor, a switch valve 1 is arranged at the feed port of the alkali metal filter, a filter baffle for intercepting alkali metals is arranged inside the alkali metal filter, the filter baffle comprises a regular hexagonal baffle frame, and an elastic filter screen is arranged on the lower surface of the baffle frame.

[0007] Furthermore, a lug is provided on a side of the alkali metal filter, and a weighing module is provided below the lug.

[0008] Furthermore, a fixing bracket is provided inside the alkali metal filter, the fixing bracket is fixed to the alkali metal filter, and the filter baffle is fixed below the fixing bracket.

[0009] Furthermore, the top of the alkali metal filter is provided with an air inlet, a solvent inlet, an exhaust gas outlet and a filtrate outlet in sequence.

[0010] Furthermore, the pipelines where the alkali metal filter filtrate outlet, tail gas outlet, solvent inlet and air inlet 1 are located are respectively provided with switch valve 2, switch valve 3, switch valve 4 and switch valve 6.

[0011] Furthermore, an air inlet 2 is provided below the alkali metal filter, wherein a switch valve 7 is provided on the pipeline where the air inlet 2 is located.

[0012] Furthermore, an air inlet three is provided on the top of the alkali metal reactor, wherein a switch valve five is provided on the pipeline where the air inlet three is located.

[0013] Furthermore, a flange is provided on the alkali metal filter cylinder.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1) By adopting the technical solution of the utility model, nitrogen is supplemented from the air inlet three, the pressure in the alkali metal reactor is increased, and the alkali metal-containing material is pressed into the alkali metal filter through the extension pipe. When the alkali metal-containing material passes through the elastic filter screen, the alkali metal is intercepted on the elastic filter screen, and the filtrate passes through the elastic filter screen and the filter baffle to the downstream. After the filtration is completed, the alkali metal is blown dry by opening the switch valve seven and the switch valve three. After the alkali metal is blown dry, it is weighed. When the alkali metal reactor needs to carry out the next batch of feeding, the solvent is allowed to enter the alkali metal filter, and then the nitrogen pipeline switch valve six above the alkali metal filter is opened, and nitrogen enters the alkali metal filter. Under the alternating action of opening and closing the nitrogen, the elastic filter screen is stretched, and the alkali metal remaining on the elastic filter screen falls off and falls into the alkali metal reactor under the action of nitrogen pressure and gravity, thereby realizing the recovery and application of the alkali metal;

[0016] 2) The filter baffle of the alkali metal filter of the utility model is provided with an elastic filter screen, so that the alkali metal can be completely discharged from the filter without manual assistance;

[0017] 3) The utility model sets the discharge port above the alkali metal reactor, adopts the upper discharge method, sets the alkali metal filter above the alkali metal reactor, and the connecting pipe between the alkali metal reactor and the alkali metal filter is short and straight. When the recovered alkali metal is discharged, the alkali metal intercepted by the elastic filter can smoothly enter the alkali metal reactor under the action of gravity and nitrogen, and it is not easy for the material to be blocked in the pipe;

[0018] 4) The device of the utility model is equipped with a weighing module, which can collect original data and automatically calculate and record the mass of the recovered alkali metals, providing convenience for production and benefit statistics;

[0019] 5) The utility model can realize the whole process of closed and automated control, reducing the operation steps of traditional processes and reducing the manual operation load;

[0020] 6) The utility model device realizes inert protection and improves process safety;

[0021] 7) The device of the utility model is used to effectively deal with the problems of waste of raw materials, high cost of wastewater treatment and high safety risks in the post-treatment process of excess alkali metals. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model device;

[0023] Figure 2 It is a schematic diagram of the local structure of the filter baffle of the utility model.

[0024] In the figure: 1. Alkali metal reactor; 2. Alkali metal filter; 3. Filter baffle; 4. Fixed bracket; 5. Weighing module; 6. Connecting pipe; 7. Filter flange; 8. Switch valve one; 9. Filter switch valve two; 10. Switch valve three; 11. Switch valve four; 12. Switch valve five; 13. Switch valve six; 14. Switch valve seven; 15. Discharge port; 16. Support ear; 17. Elastic filter screen; 18. Extension pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-2 As shown, an alkali metal recovery and reuse device includes an alkali metal reactor 1 and an alkali metal filter 2. The alkali metal filter 2 is arranged above the alkali metal reactor 1. The top of the alkali metal reactor 1 is provided with a discharge port 15. The bottom of the alkali metal filter 2 is provided with a feed port. The discharge port 15 is connected to the feed port of the alkali metal filter 2 through a straight pipe 6.

[0027] The utility model arranges the discharge port 15 above the alkali metal reactor 1, adopts the upper discharge mode, arranges the alkali metal filter 2 above the alkali metal reactor 1, and the connecting pipe between the alkali metal reactor 1 and the alkali metal filter 2 is short and straight. When the recovered alkali metal is discharged, the alkali metal intercepted by the elastic filter can smoothly enter the alkali metal reactor 1 under the action of gravity and nitrogen, and the phenomenon of material clogging in the pipe is not easy to occur.

[0028] The discharge port 15 of the alkali metal reactor 1 is provided with an extension pipe 18 in the reactor, wherein a switch valve 8 is provided at the feed port of the alkali metal filter 2, and a filter baffle 3 for intercepting alkali metals is provided inside the alkali metal filter 2, and the filter baffle 3 includes a regular hexagonal baffle frame, and an elastic filter screen 17 is provided on the lower surface of the baffle frame.

[0029] The filter baffle 3 of the alkali metal filter 2 of the utility model is provided with an elastic filter screen 17, so that the alkali metal can be completely discharged from the filter without manual assistance.

[0030] In this embodiment, a lug 16 is provided on the side of the alkali metal filter 2, and a weighing module 5 is provided below the lug 16, which can collect original data and automatically calculate and record the mass of the recovered alkali metal, providing convenience for production and benefit statistics.

[0031] A fixing bracket 4 is provided inside the alkali metal filter 2, the fixing bracket 4 is fixed to the alkali metal filter 2, and the filter baffle 3 is fixed below the fixing bracket 4. A flange 7 is provided on the cylinder of the alkali metal filter 2.

[0032] In this embodiment, an air inlet 1, a solvent inlet, an exhaust gas outlet and a filtrate inlet are sequentially provided at the top of the alkali metal filter 2, and a switch valve 2 9, a switch valve 3 10, a switch valve 4 11 and a switch valve 6 13 are sequentially provided on the pipelines where the filtrate inlet, the exhaust gas outlet, the solvent inlet and the air inlet 1 of the alkali metal filter 2 are located.

[0033] An air inlet 2 is provided below the alkali metal filter 2, wherein a switch valve 7 14 is provided on the pipeline where the air inlet 2 is located.

[0034] In this embodiment, an air inlet three is provided on the top of the alkali metal reactor 1, wherein a switch valve five 12 is provided on the pipeline where the air inlet three is located.

[0035] The process of recovering alkali metals from alkali metal-containing materials is as follows:

[0036] When the alkali metal reactor 1 is discharging, the worker clicks on the DCS operating table to open the air inlet switch valve 5 12 of the alkali metal reactor 1, the feed inlet switch valve 1 8 of the alkali metal filter 2, and the filtrate inlet switch valve 2 9 of the alkali metal filter 2, and nitrogen enters the alkali metal reactor 1. The pressure in the alkali metal reactor 1 increases, and the alkali metal-containing material is pressed into the alkali metal filter 2 through the extension pipe 18. When the alkali metal material passes through the elastic filter 17, the alkali metal is intercepted on the elastic filter 17, and the filtrate passes through the filtrate port above the alkali metal filter 2 to the downstream.

[0037] After the filtration is completed, the worker on the DCS operating table closes the air inlet switch valve 5 12 of the alkali metal reactor 1, the feed inlet switch valve 1 8 of the alkali metal filter 2, and the filtrate inlet switch valve 2 9 of the alkali metal filter 2; opens the air inlet switch valve 7 14 at the lower left of the alkali metal filter 2, and opens the tail gas switch valve 3 10 above the alkali metal filter 2 to dry the alkali metal. After the alkali metal is dried, the worker on the DCS operating table closes the air inlet switch valve 7 14 at the lower left of the alkali metal filter 2, and closes the tail gas switch valve 3 10 above the alkali metal filter 2. The DCS system collects the mass data m1 of the weighing module 5.

[0038] When the next batch of materials is added to the alkali metal reactor 1, the worker opens the switch valve 4 11 of the solvent pipeline above the alkali metal filter 2 and opens the switch valve 1 8 of the pipeline below the alkali metal filter 2 on the DCS operating table, and the solvent enters the alkali metal filter 2 to flush the alkali metal into the alkali metal reactor 1. After the solvent feeding is completed, the worker closes the switch valve 4 11 of the solvent pipeline above the alkali metal filter 2 and opens the switch valve 6 13 of the nitrogen pipeline above the alkali metal filter 2 on the DCS operating table, and nitrogen enters the alkali metal filter 2. Under the alternating action of opening and closing the nitrogen, the elastic filter 17 stretches, and the alkali metal remaining on the elastic filter 17 falls off and falls into the alkali metal reactor 1 under the action of nitrogen pressure and gravity, realizing the recovery and application of alkali metals. The DCS system collects the mass data m2 of the weighing module 5.

[0039] The DCS system takes the difference and obtains the mass of alkali metals recovered in this batch m=m1-m2.

Claims

1. An alkali metal recovery and recycling device, comprising an alkali metal reactor (1) and an alkali metal filter (2), wherein the top of the alkali metal reactor (1) is provided with a discharge port (15), and the bottom of the alkali metal filter (2) is provided with a feed port, and the discharge port (15) is connected to the feed port of the alkali metal filter (2) through a straight pipe (6), characterized in that The discharge port (15) of the alkali metal reactor (1) is provided with an extension pipe (18) in the reactor, wherein a switch valve (8) is provided at the feed port of the alkali metal filter (2), and a filter baffle (3) for intercepting alkali metals is provided inside the alkali metal filter (2), wherein the filter baffle (3) comprises a regular hexagonal baffle frame, and an elastic filter screen (17) is provided on the lower surface of the baffle frame.

2. The alkali metal recovery and recycling device according to claim 1, characterized in that A support ear (16) is provided on the side of the alkali metal filter (2), and a weighing module (5) is provided below the support ear (16).

3. The alkali metal recovery and recycling device according to claim 1, characterized in that A fixed bracket (4) is provided inside the alkali metal filter (2); the fixed bracket (4) is fixed to the alkali metal filter (2); and the filter baffle (3) is fixed below the fixed bracket (4).

4. The alkali metal recovery and recycling device according to claim 1, characterized in that The top of the alkali metal filter (2) is provided with an air inlet 1, a solvent inlet, an exhaust gas outlet and a filtrate outlet in sequence.

5. The alkali metal recovery and recycling device according to claim 4, characterized in that The pipelines at the filtrate outlet, tail gas outlet, solvent inlet and air inlet 1 of the alkali metal filter (2) are respectively provided with a second switch valve (9), a third switch valve (10), a fourth switch valve (11) and a sixth switch valve (13).

6. The alkali metal recovery and recycling device according to claim 1, characterized in that An air inlet 2 is provided below the alkali metal filter (2), wherein a switch valve 7 (14) is provided on the pipeline where the air inlet 2 is located.

7. The alkali metal recovery and recycling device according to claim 1, characterized in that An air inlet three is provided on the top of the alkali metal reactor (1), wherein a switch valve five (12) is provided on the pipeline where the air inlet three is located.

8. The alkali metal recovery and recycling device according to claim 1, characterized in that The alkali metal filter (2) is provided with a flange (7) on its cylinder.

Images