Freezing denitration device for nitrate-rich brine

Abstract

The utility model discloses a freezing denitration device for nitrate-rich saline water, which relates to the technical field of nitrate-rich saline water denitration equipment and comprises a crystallization box, and a cover body is mounted at the top end of the crystallization box; a mounting plate with a square section is fixedly connected to the inner wall of the crystallization box, and a connecting plate is arranged at the top end of the mounting plate; and a plurality of connecting pipes are mounted around the top end of the connecting plate at equal intervals. According to the utility model, through the arrangement of the connecting pipes and the U-shaped pipes which are arranged on the periphery of the inner wall of the crystallization box, the contact area between the cooling liquid and the nitrate-rich saline water can be obviously increased, and the heat exchange efficiency is improved, so that the nitrate-rich saline water in the crystallization box is quickly cooled, and the connecting pipes and the like in the crystallization box are convenient to take out; meanwhile, the stirrer is arranged in the crystallization box, so that heat exchange between nitrate-rich saline water at different positions in the crystallization box and cooling liquid in the connecting pipe can be realized, and the crystallization of sodium sulfate and the growth of crystals are promoted.

Description

TECHNICAL FIELD

[0001] The utility model relates to rich nitrate brine denitration equipment technical field especially relates to a kind of frozen denitration device of rich nitrate brine. BACKGROUND

[0002] Rich nitrate brine frozen denitration device is a kind of equipment for processing high concentration sodium sulfate brine, its core purpose is to remove sodium sulfate (mirabilite) in brine by freezing crystallization, to meet the requirement of brine quality in chlor-alkali industry and other specific fields. The current rich nitrate brine frozen denitration device shows that rich nitrate brine is pre-cooled, and the cold source uses frozen clear liquid or other low-temperature medium to reduce the cold consumption of the freezing denitration process to the maximum, and then it is placed in the inside of crystallization tank for crystallization, etc., and finally through centrifugal nitrate, but the current crystallization tank has limited cooling speed, it is difficult to cool the inside of crystallization tank quickly, which is not conducive to the rapid cooling and crystallization of rich nitrate brine. SUMMARY

[0003] The utility model provides a kind of rich nitrate brine's frozen denitration device, solve the problem in background art.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of rich nitrate brine's frozen denitration device, including crystallization tank, the top of the crystallization tank is equipped with cover body;

[0006] The inner wall of the crystallization tank is fixedly connected with the mounting plate with the section of "mouth" character type, and the top of the mounting plate is provided with connecting plate;

[0007] The top of the connecting plate is installed with a plurality of connecting pipes at equal intervals, and the top or bottom of adjacent two connecting pipes is connected with U-shaped pipe, and the connecting pipe is connected with inlet and outlet by passing through cover body.

[0008] As a further description of the above technical scheme:

[0009] The inlet and outlet are connected with heat exchanger and circulating pump.

[0010] As a further description of the above technical scheme:

[0011] The distance between the connecting pipes arranged symmetrically is less than the length and width inside the mounting plate.

[0012] As a further description of the above technical scheme:

[0013] A plurality of fixing holes are provided at equal intervals at the top of the mounting plate, a plurality of mounting holes for mounting connecting pipes are provided at equal intervals on the surface of the connecting plate, and a plurality of fixing rods connected with the fixing holes are provided at equal intervals at the bottom of the connecting plate.

[0014] As a further description of the above technical solutions:

[0015] The diameter of the fixed rod is same as the inner diameter of the fixed hole.

[0016] As a further description of the above technical solutions:

[0017] The bottom end of the cover body is rotationally connected with a rotating rod, and the surface of the rotating rod is connected with a stirring rod, and the top end of the cover body is provided with a motor for driving the rotating rod.

[0018] As described above, due to the adoption of the above technical solutions, the beneficial effects of the present application are:

[0019] In the present application, the connecting pipe and U-shaped pipe arranged around the inner wall of the crystallization tank can significantly increase the contact area of the cooling liquid and the rich nitrate salt water, improve the heat exchange efficiency, so that the rich nitrate salt water in the crystallization tank is rapidly cooled, and the connecting pipe and other components in the crystallization tank are convenient to take out, convenient for cleaning and maintenance, etc., at the same time, the stirrer arranged in the crystallization tank can make the rich nitrate salt water in different parts of the crystallization tank and the cooling liquid in the connecting pipe to exchange heat, promote the crystallization of sodium sulfate and the growth of crystals. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic diagram of a rich nitrate salt water freezing denitration device.

[0021] Figure 2 It is a structure schematic diagram of a part of the crystallization tank in the present application.

[0022] Figure 3 It is a structure schematic diagram of a part of the surface of the mounting plate in the present application.

[0023] Figure 4 It is a structure schematic diagram of a part of the bottom end of the cover body in the present application.

[0024] Legend:

[0025] Crystallization tank; 2, cover body; 3, mounting plate; 4, connecting plate; 5, connecting pipe; 6, U-shaped pipe; 7, liquid inlet; 8, liquid outlet; 9, fixed hole; 10, fixed rod; 11, mounting hole; 12, motor; 13, rotating rod; 14, stirring rod. DETAILED DESCRIPTION

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-4 A cryogenic denitrification device for nitrate-rich brine includes a crystallization box 1 with a cover 2 installed at the top. An mounting plate 3 with a "U"-shaped cross-section is fixedly connected to the inner wall of the crystallization box 1, and a connecting plate 4 is installed at the top of the mounting plate 3. Multiple connecting pipes 5 are equidistantly installed around the top of the connecting plate 4. A U-shaped pipe 6 connects to the top or bottom of adjacent connecting pipes 5. The connecting pipes 5 pass through the cover 2 and are connected to an inlet 7 and an outlet 8. Through the connecting pipes 5 and U-shaped pipes 6 inside the crystallization box 1, the contact area with the nitrate-rich brine inside the crystallization box 1 can be increased to facilitate heat exchange, allowing the nitrate-rich brine inside the crystallization box 1 to cool and crystallize rapidly. Simultaneously, the inlet 7 and outlet 8 connected to the connecting pipes 5 are connected to a circulating pump and a heat exchanger, allowing the coolant to circulate and cool within the connecting pipes 5 and U-shaped pipes 6, improving the heat exchange efficiency with the nitrate-rich brine.

[0028] Furthermore, the inlet 7 and outlet 8 are connected to a heat exchanger and a circulation pump, which facilitates the circulation of coolant within the connecting pipe 5 and the U-shaped pipe 6 through the circulation pump and heat exchanger.

[0029] Furthermore, the distance between the symmetrically arranged connecting pipes 5 is less than the length and width inside the mounting plate 3. This is to avoid the length between the symmetrically arranged connecting pipes 5 being greater than the width and length of the inner wall of the mounting plate 3, thereby affecting the installation of the connecting plate 4.

[0030] Furthermore, the top of the mounting plate 3 is provided with a plurality of fixing holes 9 at equal intervals, the surface of the connecting plate 4 is provided with mounting holes 11 at equal intervals for installing the connecting pipe 5, and the bottom end of the connecting plate 4 is provided with fixing rods 10 at equal intervals that are connected to the fixing holes 9. This facilitates the installation of the connecting pipe 5 and the like inside the mounting holes 11 and the connection of the fixing rods 10 to the inside of the fixing holes 9, so that the connecting pipe 5 and the like can be installed inside the crystallization box 1. Conversely, it is also easy to remove them for cleaning and maintenance.

[0031] Furthermore, the diameter of the fixing rod 10 is the same as the inner diameter of the fixing hole 9, in order to avoid gaps that would cause the connecting plate 4 to cause the connecting pipe 5 and other components to shake inside the crystallization box 1, affecting the connection with the circulating pump and heat exchanger.

[0032] Furthermore, a rotating rod 13 is rotatably connected to the bottom end of the cover 2, and a stirring rod 14 is connected to the surface of the rotating rod 13. A motor 12 for driving the rotating rod 13 is installed at the top of the cover 2. This facilitates the rotation of the rotating rod 13 and the stirring rod 14 by the motor 12, which allows the nitrate-rich brine in different parts of the crystallization box 1 to exchange heat with the coolant inside the connecting pipe 5, thereby promoting the crystallization of sodium sulfate and the growth of crystals.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cryogenic denitrification device for nitrate-rich brine, comprising a crystallization tank (1), characterized in that: A cover body (2) is installed at the top of the crystallization tank (1); An installation plate (3) with a "mouth" - shaped cross - section is fixedly connected to the inner wall of the crystallization tank (1), and a connecting plate (4) is arranged at the top of the installation plate (3); A plurality of connecting pipes (5) are equidistantly installed around the top of the connecting plate (4). A U - shaped pipe (6) is connected between the top or bottom of two adjacent connecting pipes (5). The connecting pipes (5) pass through the cover body (2) and are connected to a liquid inlet (7) and a liquid outlet (8).

2. The cryogenic denitrification device for nitrate-rich brine according to claim 1, characterized in that: The liquid inlet (7) and the liquid outlet (8) are connected to a heat exchanger and a circulation pump.

3. The cryogenic denitrification device for nitrate-rich brine according to claim 1, characterized in that: The distance between the symmetrically arranged connecting pipes (5) is less than the length and width inside the installation plate (3).

4. The cryogenic denitrification device for nitrate-rich brine according to claim 1, characterized in that: A plurality of fixing holes (9) are equidistantly opened at the top of the installation plate (3). Installation holes (11) for installing the connecting pipes (5) are equidistantly opened on the surface of the connecting plate (4). Fixing rods (10) connected to the fixing holes (9) are equidistantly arranged at the bottom of the connecting plate (4).

5. The cryogenic denitrification device for nitrate-rich brine according to claim 4, characterized in that: The diameter of the fixing rod (10) is the same as the inner diameter of the fixing hole (9).

6. The cryogenic denitrification device for nitrate-rich brine according to claim 1, characterized in that: A rotating rod (13) is rotatably connected to the bottom of the cover body (2), and a stirring rod (14) is connected to the surface of the rotating rod (13). A motor (12) for driving the rotating rod (13) is installed at the top of the cover body (2).

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