Pre-concentration device for liquid sodium methoxide

Abstract

The utility model discloses a pre-concentration device of liquid sodium methoxide, which at least comprises a first distillation kettle provided with a first heating interlayer, the top of the first distillation kettle is respectively provided with a first incoming material inlet and a first gas phase outlet, and the bottom of the first distillation kettle is provided with a first discharge hole; the first incoming material inlet is connected with a first to-be-concentrated liquid sodium methoxide raw material conveying pipeline, the first gas phase outlet is connected into the first heat exchanger, and the first discharging opening serves as a concentrated liquid sodium methoxide outlet and is connected with a concentrated liquid sodium methoxide temporary storage tank; according to the sodium methoxide drying device, the concentration of sodium methoxide entering the sodium methoxide drying device is improved, and the subsequent sodium methoxide drying time is obviously shortened, so that the drying efficiency of the sodium methoxide drying device is improved, and the purpose of improving the production efficiency of sodium methoxide is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of sodium methoxide production, and particularly relates to a pre-concentration device for liquid sodium methoxide. Background Art

[0002] In the drying process of existing sodium methoxide production equipment, a rake vacuum evaporator is usually used to dry the sodium methoxide liquid raw material (containing a large amount of methanol). One batch is dried per day, and each batch takes about 24 hours. This results in a long production cycle of sodium methoxide and relatively low production efficiency.

[0003] Therefore, the applicant hopes to propose a technical solution to solve the above technical problems. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a pre-concentration device for liquid sodium methoxide, which increases the concentration of sodium methoxide entering a sodium methoxide drying device, significantly shortens the subsequent drying time of sodium methoxide, thereby improving the drying efficiency of the sodium methoxide drying device and achieving the purpose of improving the production efficiency of sodium methoxide.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A liquid sodium methoxide pre-concentration device comprises at least a first distillation kettle provided with a first heating interlayer, wherein a first material inlet and a first gas phase outlet are respectively provided on the top of the first distillation kettle, and a first material discharge port is provided on the bottom thereof, the first material inlet is connected to a first liquid sodium methoxide raw material conveying pipeline to be concentrated, the first gas phase outlet is connected to a first heat exchanger, and the first material discharge port serves as an outlet for concentrated liquid sodium methoxide and is connected to a concentrated liquid sodium methoxide temporary storage tank.

[0007] Preferably, it also includes a second distillation kettle provided with a second heating interlayer, wherein the top of the second distillation kettle is respectively provided with a second material inlet and a second gas phase outlet, and the bottom is provided with a second discharge port, the second material inlet is connected to the second liquid sodium methoxide raw material conveying pipeline to be concentrated, the second gas phase outlet is connected to the second heat exchanger, and the second discharge port serves as the concentrated liquid sodium methoxide outlet and is connected to the concentrated liquid sodium methoxide temporary storage tank.

[0008] Preferably, a first plunger pump is provided on the conveying pipeline of the first liquid sodium methoxide raw material to be concentrated.

[0009] Preferably, a second plunger pump is provided on the conveying pipeline of the second liquid sodium methoxide raw material to be concentrated, and the second plunger pump is connected in parallel with the first plunger pump.

[0010] Preferably, one side of the first heat exchanger is provided with an inlet connected to the first gas phase outlet; and the other side thereof is respectively provided with a first heat exchanger gas phase interface and a first heat exchanger liquid phase outlet.

[0011] Preferably, one side of the second heat exchanger is provided with an inlet connected to the second gas phase outlet; and the other side thereof is respectively provided with a second heat exchanger gas phase interface and a second heat exchanger liquid phase outlet.

[0012] Preferably, the gas phase interface of the first heat exchanger is connected to a first vacuum device, and the liquid phase outlet of the first heat exchanger is connected to a liquid methanol recovery tank for liquid methanol recovery.

[0013] Preferably, the gas phase interface of the second heat exchanger is connected to a second vacuum device, and the liquid phase outlet of the second heat exchanger is connected to a liquid methanol recovery tank for liquid methanol recovery.

[0014] Preferably, the connecting pipeline between the first discharge port and the concentrated liquid sodium methoxide temporary storage tank, and the connecting pipeline between the second discharge port and the concentrated liquid sodium methoxide temporary storage tank are both provided with a thermal insulation structure to achieve a thermal insulation and heating effect.

[0015] Preferably, the outlet of the concentrated liquid sodium methoxide temporary storage tank is connected to the sodium methoxide drying device through a first delivery pump and a second delivery pump connected in parallel.

[0016] The present application proposes a liquid sodium methoxide pre-concentration device mainly composed of a distillation kettle, a heat exchanger and a concentrated liquid sodium methoxide temporary storage tank. The device pre-concentrates a concentrated liquid sodium methoxide raw material to be concentrated, pre-concentrates the sodium methoxide liquid raw material, increases the concentration of sodium methoxide entering a sodium methoxide drying device (usually an evaporator), significantly shortens the subsequent drying time of sodium methoxide, thereby improving the drying efficiency of the sodium methoxide drying device and achieving the purpose of improving the production efficiency of sodium methoxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a liquid sodium methoxide pre-concentration device under a specific embodiment of the present application. DETAILED DESCRIPTION

[0018] This embodiment provides a pre-concentration device for liquid sodium methoxide, comprising at least a first distillation kettle provided with a first heating interlayer, wherein a first incoming material inlet and a first gas phase outlet are respectively provided at the top of the first distillation kettle, and a first discharge port is provided at the bottom thereof, the first incoming material inlet is connected to a first liquid sodium methoxide raw material conveying pipeline to be concentrated, the first gas phase outlet is connected to a first heat exchanger, and the first discharge port serves as an outlet for concentrated liquid sodium methoxide and is connected to a concentrated liquid sodium methoxide temporary storage tank.

[0019] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0020] See Figure 1 As shown, a pre-concentration device for liquid sodium methoxide includes a first distillation kettle 1a (with a stirring device therein) provided with a first heating interlayer, wherein a first incoming material inlet 11a and a first gas phase outlet 12a are respectively provided at the top of the first distillation kettle 1a, and a first discharge port 13a is provided at the bottom thereof, the first incoming material inlet 11a is connected to a first liquid sodium methoxide raw material conveying pipeline to be concentrated, the first gas phase outlet 12a is connected to a first heat exchanger 2a, and the first discharge port 13a serves as an outlet for concentrated liquid sodium methoxide and is connected to a concentrated liquid sodium methoxide temporary storage tank 3; in order to improve work efficiency and increase production Operational flexibility, preferably, in this embodiment, the pre-concentration device for liquid sodium methoxide further includes a second distillation kettle 1b (provided with a stirring device) provided with a second heating interlayer, wherein the top of the second distillation kettle 1b is respectively provided with a second incoming material inlet 11b and a second gas phase outlet 12b, and the bottom thereof is provided with a second discharge port 13b, the second incoming material inlet 11b is connected to the second liquid sodium methoxide raw material conveying pipeline to be concentrated, the second gas phase outlet 12b is connected to the second heat exchanger 2b, and the second discharge port 13b serves as the outlet of concentrated liquid sodium methoxide and is connected to the concentrated liquid sodium methoxide temporary storage tank 3;

[0021] Preferably, in this embodiment, a first plunger pump 4a is provided on the first liquid sodium methoxide raw material delivery pipeline to be concentrated; a second plunger pump 4b is provided on the second liquid sodium methoxide raw material delivery pipeline to be concentrated, and the second plunger pump 4b is connected in parallel with the first plunger pump 4a;

[0022] Preferably, in this embodiment, one side of the first heat exchanger 2a is provided with an inlet connected to the first gas phase outlet 12a; and the other side thereof is respectively provided with a first heat exchanger gas phase interface and a first heat exchanger liquid phase outlet; further preferably, in this embodiment, the first heat exchanger gas phase interface is connected to the first vacuum device 5a (a vacuum pump can be used), and the first heat exchanger liquid phase outlet is connected to the liquid methanol recovery tank 6 for liquid methanol recovery;

[0023] Preferably, in this embodiment, one side of the second heat exchanger 2b is provided with an inlet connected to the second gas phase outlet 12b; and the other side thereof is respectively provided with a second heat exchanger gas phase interface and a second heat exchanger liquid phase outlet; further preferably, in this embodiment, the second heat exchanger gas phase interface is connected to the second vacuum device 5b, and the second heat exchanger liquid phase outlet is connected to the liquid methanol recovery tank 6 for liquid methanol recovery.

[0024] Preferably, in this embodiment, the connecting pipeline between the first discharge port 13a and the concentrated liquid sodium methoxide temporary storage tank 3, and the connecting pipeline between the second discharge port 13b and the concentrated liquid sodium methoxide temporary storage tank 3 are both provided with an insulation structure to achieve an insulation and heating effect.

[0025] Preferably, in this embodiment, the outlet of the concentrated liquid sodium methoxide temporary storage tank 3 is connected to the evaporator (serving as a drying device for drying sodium methoxide) through a first delivery pump 6a and a second delivery pump 6b connected in parallel.

[0026] This embodiment proposes a liquid sodium methoxide pre-concentration device which is mainly composed of a first distillation kettle, a first heat exchanger, a first concentrated liquid sodium methoxide temporary storage tank, a second distillation kettle, a second heat exchanger, and a second concentrated liquid sodium methoxide temporary storage tank, which can be operated in parallel and independently. The device pre-concentrates the concentrated liquid sodium methoxide raw material to be concentrated, pre-concentrates the sodium methoxide liquid raw material, increases the concentration of sodium methoxide entering the evaporator, significantly shortens the subsequent drying time of sodium methoxide, thereby improving the drying efficiency of the sodium methoxide drying device and achieving the purpose of improving the production efficiency of sodium methoxide. Specifically, the applicant uses the liquid sodium methoxide pre-concentration device provided in the above embodiment to concentrate the concentration of the concentrated liquid sodium methoxide raw material to be concentrated from 30% to 40%, thereby significantly improving the production efficiency of sodium methoxide.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pre-concentration device for liquid sodium methoxide, characterized in that: The invention comprises at least a first distillation kettle provided with a first heating interlayer, wherein the top of the first distillation kettle is respectively provided with a first material inlet and a first gas phase outlet, and the bottom is provided with a first discharge port, the first material inlet is connected to a first liquid sodium methoxide raw material conveying pipeline to be concentrated, the first gas phase outlet is connected to a first heat exchanger, and the first discharge port serves as an outlet for concentrated liquid sodium methoxide and is connected to a concentrated liquid sodium methoxide temporary storage tank.

2. The pre-concentration device for liquid sodium methoxide according to claim 1, wherein It also includes a second distillation kettle provided with a second heating interlayer, wherein the top of the second distillation kettle is respectively provided with a second material inlet and a second gas phase outlet, and the bottom is provided with a second material outlet, the second material inlet is connected to the second liquid sodium methoxide raw material conveying pipeline to be concentrated, the second gas phase outlet is connected to the second heat exchanger, and the second material outlet serves as the concentrated liquid sodium methoxide outlet and is connected to the concentrated liquid sodium methoxide temporary storage tank.

3. The pre-concentration device for liquid sodium methoxide according to claim 2, wherein A first plunger pump is provided on the first liquid sodium methoxide raw material conveying pipeline to be concentrated.

4. The pre-concentration device for liquid sodium methoxide according to claim 3, wherein A second plunger pump is provided on the second liquid sodium methoxide raw material conveying pipeline to be concentrated, and the second plunger pump is connected in parallel with the first plunger pump.

5. The pre-concentration device for liquid sodium methoxide according to claim 2, characterized in that: One side of the first heat exchanger is provided with an inlet connected to the first gas phase outlet; and the other side thereof is respectively provided with a first heat exchanger gas phase interface and a first heat exchanger liquid phase outlet.

6. The pre-concentration device for liquid sodium methoxide according to claim 5, characterized in that: One side of the second heat exchanger is provided with an inlet connected to the second gas phase outlet; and the other side thereof is respectively provided with a second heat exchanger gas phase interface and a second heat exchanger liquid phase outlet.

7. The pre-concentration device for liquid sodium methoxide according to claim 5, characterized in that: The gas phase interface of the first heat exchanger is connected to a first vacuum device, and the liquid phase outlet of the first heat exchanger is connected to a liquid methanol recovery tank for liquid methanol recovery.

8. The pre-concentration device for liquid sodium methoxide according to claim 7, characterized in that: The gas phase interface of the second heat exchanger is connected to the second vacuum device, and the liquid phase outlet of the second heat exchanger is connected to the liquid methanol recovery tank for liquid methanol recovery.

9. The pre-concentration device for liquid sodium methoxide according to claim 2, characterized in that: The connecting pipeline between the first discharge port and the concentrated liquid sodium methoxide temporary storage tank, and the connecting pipeline between the second discharge port and the concentrated liquid sodium methoxide temporary storage tank are both provided with a heat preservation structure to achieve a heat preservation and heating effect.

10. The pre-concentration device for liquid sodium methoxide according to claim 2, characterized in that: The outlet of the concentrated liquid sodium methoxide temporary storage tank is connected to the sodium methoxide drying device through a first delivery pump and a second delivery pump connected in parallel.

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