Electrolytic bath temperature control device for caustic soda production

Abstract

The utility model relates to an electrolytic bath temperature control device for caustic soda production, which comprises an electrolytic bath body, one side of the electrolytic bath body is provided with a salt liquid connecting pipe, one end of the salt liquid connecting pipe is connected with a connecting pipe through a bolt, and one side of the electrolytic bath body is provided with a plurality of conveying pipes arranged in an annular array. The conveying pipes are connected in series through the connecting pipes, one end of the first conveying pipe is communicated with the connecting pipe, and one end of the last conveying pipe is fixedly connected with a conveying pipe. The free end of the conveying pipe is communicated with the refined salt liquid storage tank, so that when refined salt liquid needs to be injected into the electrolytic bath body, the refined salt liquid enters the conveying pipe and the connecting pipe through the conveying pipe, and the refined salt liquid in the conveying pipe and the connecting pipe is heated through the heat exchange box; the plurality of conveying pipes are connected in series through the plurality of connecting pipes, so that the circulation path of the refined salt liquid can be lengthened, and the heat exchange time of the salt liquid in the conveying pipes can be prolonged.

Description

Technical Field

[0001] The utility model relates to caustic soda production technology, in particular to an electrolytic cell temperature control device for caustic soda production. Background Art

[0002] The electrolytic cell consists of a cell body, an anode and a cathode. Most of them use a diaphragm to separate the anode chamber and the cathode chamber. The current production of caustic soda adopts ion membrane electrolysis. The ion membrane usually uses a cationic membrane. First, a saturated solution of refined salt flows into the anode chamber of the electrolytic cell. Direct current passes through, and an electrolytic reaction occurs, resulting in ion migration and discharge. The negative ions in the solution generate Cl2 at the anode, and the positive ions move to the cathode to generate NaOH and H2. In order to improve the electrolysis efficiency and ensure the optimal cell temperature, it is usually necessary to heat the refined salt solution to a certain temperature to improve the electrolysis efficiency.

[0003] The refined salt solution in the existing electrolytic cell for caustic soda production is usually heated by a heat exchanger to heat the refined salt solution in the storage tank, which is not convenient for quickly heating the salt solution in the delivery pipeline, thereby saving energy. Utility Model Content

[0004] The utility model aims to provide a temperature control device for an electrolytic cell used in caustic soda production, which is used to solve the problem that when the refined salt solution of the electrolytic cell used in caustic soda production is heated, it is not convenient to quickly heat the salt solution in the conveying pipeline.

[0005] In order to solve the above problems, the utility model provides an electrolytic cell temperature control device for caustic soda production, comprising an electrolytic cell body, a salt solution connecting pipe is provided on one side of the electrolytic cell body, one end of the salt solution connecting pipe is connected to a connecting pipe by bolts, a plurality of delivery pipes arranged in a ring array are provided on one side of the electrolytic cell body, the plurality of delivery pipes are connected in series by a plurality of connecting pipes, one end of the first delivery pipe is connected to the connecting pipe, one end of the last delivery pipe is fixedly connected to a transport pipe, an annular heat exchange box is provided in the plurality of delivery pipes, a plurality of slots corresponding to the delivery pipes are provided around the heat exchange box, the plurality of delivery pipes can be respectively located in the corresponding slots, and a steam tank is fixed in the middle of the heat exchange box.

[0006] The temperature control device for electrolytic cell used in caustic soda production provided by the utility model also has the following technical features:

[0007] Furthermore, an air inlet pipe and an air outlet pipe are provided on the top of the steam tank.

[0008] Furthermore, a condensation water pipe is provided at the bottom of the steam tank, and a detachable knob is provided in the condensation water pipe.

[0009] Furthermore, a water inlet is provided on the top of the heat exchange box, and a detachable screw cover is provided in the water inlet.

[0010] Furthermore, an industrial thermometer is provided in the heat exchange box.

[0011] Furthermore, a protective tube is provided on the outer side of the heat exchange box.

[0012] The utility model has the following beneficial effects: by connecting the free end of the transport pipe with the refined salt solution storage tank, when it is necessary to inject refined salt solution into the electrolytic cell body, the refined salt solution enters the transport pipe and the connecting pipe through the transport pipe, and the refined salt solution in the transport pipe and the connecting pipe is heated by the heat exchange box, and by connecting a plurality of transport pipes in series through a plurality of connecting pipes, the circulation path of the refined salt solution can be lengthened, thereby prolonging the heat exchange time of the salt solution in the transport pipe, and by locating a plurality of transport pipes in corresponding card slots respectively, the compactness of the structure can be enhanced and the positioning of the transport pipe can be facilitated, liquid for heat exchange can be injected into the heat exchange box, high-temperature steam can be introduced into the steam tank, and the liquid in the heat exchange box is heated by the high-temperature steam, and the heated liquid in the heat exchange box can exchange heat with the refined salt solution in the transport pipe, so that the device is convenient for quickly heating the salt solution in the transport pipeline during caustic soda production, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an axonometric diagram of an embodiment of the utility model;

[0014] Figure 2 This is a three-dimensional diagram of the embodiment of the utility model after removing the protective tube;

[0015] Figure 3 This is a front view cutaway diagram of the embodiment of the utility model after removing the cylinder and the electrolytic cell;

[0016] Figure 4 This is a top view of the embodiment of the utility model without the electrolytic cell. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0018] like Figures 1 to 4In the embodiment of the electrolytic cell temperature control device for caustic soda production of the utility model shown, the electrolytic cell temperature control device for caustic soda production includes an electrolytic cell body 1, a salt solution pipe 2 is provided on one side of the electrolytic cell body 1, one end of the salt solution pipe 2 is connected to a connecting pipe 15 by bolts, a plurality of conveying pipes 3 arranged in a ring array are provided on one side of the electrolytic cell body 1, and the plurality of conveying pipes 3 are connected in series by a plurality of connecting pipes 4, one end of the first conveying pipe 3 is connected to the connecting pipe 15, and one end of the last conveying pipe 3 is fixedly connected to a conveying pipe 5, an annular heat exchange box 6 is provided in the plurality of conveying pipes 3, and a plurality of card slots 7 corresponding to the conveying pipes 3 are provided around the heat exchange box 6, and the plurality of conveying pipes 3 can be respectively located in the corresponding card slots 7, and a steam tank 8 is fixed in the middle of the heat exchange box 6, and the free end of the conveying pipe 5 is connected to the refined salt solution storage tank, so that when it is needed When refined salt solution is to be injected into the electrolytic cell body 1, the refined salt solution enters the delivery pipe 3 and the connecting pipe 4 through the transport pipe 5, and the refined salt solution in the delivery pipe 3 and the connecting pipe 4 is heated by the heat exchange box 6. By connecting multiple delivery pipes 3 in series through multiple connecting pipes 4, the circulation path of the refined salt solution can be lengthened, thereby extending the heat exchange time of the salt solution in the delivery pipe 3. By arranging multiple delivery pipes 3 in corresponding slots 7, the compactness of the structure can be enhanced and the positioning of the delivery pipe 3 can be facilitated. Liquid for heat exchange can be injected into the heat exchange box 6, and high-temperature steam can be introduced into the steam tank 8. The liquid in the heat exchange box 6 is heated by the high-temperature steam. The heated liquid in the heat exchange box 6 can exchange heat with the refined salt solution in the delivery pipe 3, so that the device can be convenient for quickly heating the salt solution in the delivery pipeline during caustic soda production, thereby saving energy.

[0019] In one embodiment of the present application, preferably, an air inlet pipe 9 and an air outlet pipe 10 are provided on the top of the steam tank 8, and the air inlet pipe 9 can facilitate the high-temperature steam to enter the steam tank 8, and the air outlet pipe 10 can facilitate the discharge of the steam.

[0020] In one embodiment of the present application, preferably, a condensate pipe 11 is provided at the bottom of the steam tank 8, a detachable knob is provided inside the condensate pipe 11, and the condensate pipe 11 can discharge the condensate.

[0021] In one embodiment of the present application, preferably, a water inlet is provided on the top of the heat exchange box 6 , and a detachable screw cap 12 is provided in the water inlet, and heat exchange liquid can be injected into the heat exchange box 6 by opening the screw cap 12 .

[0022] In one embodiment of the present application, preferably, an industrial thermometer 13 is provided in the heat exchange box 6, and the setting of the industrial thermometer 13 facilitates the adjustment of the heating condition.

[0023] In one embodiment of the present application, preferably, a protective tube 14 is provided on the outer side of the heat exchange box 6. The provision of the protective tube 14 facilitates the protection of the heat exchange box 6 and prevents scalding of the staff.

[0024] The electrolytic cell body 1 includes a cell body, an anode chamber and a cathode chamber. The anode chamber and the cathode chamber are separated by a cationic membrane. A saturated solution of refined salt flows into the anode chamber of the electrolytic cell, and a direct current passes through, causing an electrolytic reaction, resulting in ion migration and discharge. Negative ions in the solution generate Cl2 at the anode, and positive ions move to the cathode to generate NaOH and H2. The salt solution pipe 2 is connected to the anode chamber. A chlorine gas outlet is provided on the top of the anode chamber, and a hydrogen gas outlet is provided on the top of the cathode chamber. An anode drain pipe is also provided on one side of the anode chamber, and an alkali solution output pipe and a cathode drain pipe are provided on one side of the cathode chamber.

[0025] When the utility model is in use, the free end of the transport pipe 5 is connected to the refined salt solution storage tank, so that when it is necessary to inject refined salt solution into the electrolytic cell body 1, the refined salt solution enters the transport pipe 3 and the connecting pipe 4 through the transport pipe 5, and the refined salt solution in the transport pipe 3 and the connecting pipe 4 is heated by the heat exchange box 6. By connecting a plurality of transport pipes 3 in series through a plurality of connecting pipes 4, the circulation path of the refined salt solution can be lengthened, thereby extending the heat exchange time of the salt solution in the transport pipe 3. By respectively positioning a plurality of transport pipes 3 in corresponding card slots 7, the compactness of the structure can be enhanced and the position limiting of the transport pipe 3 can be facilitated. Liquid for heat exchange can be injected into the heat exchange box 6. By setting an industrial thermometer 13, In order to adjust the heating conditions, the air inlet pipe 9 can be conveniently connected to the high-temperature steam to enter the steam tank 8, and the air outlet pipe 10 can be convenient for discharging the steam, so that the high-temperature steam can be passed into the steam tank 8, and the condensate pipe 11 can discharge the condensate. The liquid in the heat exchange box 6 is heated by the high-temperature steam, and the heated liquid in the heat exchange box 6 can exchange heat with the refined salt solution in the delivery pipe 3, so that the device can quickly heat the salt solution in the delivery pipe during caustic soda production, thereby saving energy. The provision of the protective tube 14 facilitates the protection of the heat exchange box 6 and avoids scalding the staff. The heated refined salt solution enters the electrolytic cell body 1, which can affect the cell temperature, thereby playing a role in controlling the temperature of the electrolytic cell body 1.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A temperature control device for an electrolytic cell for caustic soda production, comprising an electrolytic cell body (1), characterized in that: A salt solution pipe (2) is provided on one side of the electrolytic cell body (1), one end of the salt solution pipe (2) is connected to a connecting pipe (15) by bolts, a plurality of delivery pipes (3) are provided on one side of the electrolytic cell body (1) in a ring array, the plurality of delivery pipes (3) are connected in series by a plurality of connecting pipes (4), one end of the first delivery pipe (3) is connected to the connecting pipe (15), one end of the last delivery pipe (3) is fixedly connected to a transport pipe (5), an annular heat exchange box (6) is provided in the plurality of delivery pipes (3), a plurality of slots (7) corresponding to the delivery pipes (3) are provided around the heat exchange box (6), the plurality of delivery pipes (3) can be respectively located in the corresponding slots (7), and a steam tank (8) is fixed in the middle of the heat exchange box (6).

2. The electrolytic cell temperature control device for caustic soda production according to claim 1, characterized in that: An air inlet pipe (9) and an air outlet pipe (10) are provided on the top of the steam tank (8).

3. The electrolytic cell temperature control device for caustic soda production according to claim 2, characterized in that: A condensation water pipe (11) is provided at the bottom of the steam tank (8), and a detachable knob is provided in the condensation water pipe (11).

4. The electrolytic cell temperature control device for caustic soda production according to claim 1, characterized in that: The top of the heat exchange box (6) is provided with a water inlet, and a detachable screw cover (12) is provided inside the water inlet.

5. The electrolytic cell temperature control device for caustic soda production according to claim 1, characterized in that: An industrial thermometer (13) is provided in the heat exchange box (6).

6. The electrolytic cell temperature control device for caustic soda production according to claim 1, characterized in that: The heat exchange box (6) is provided with a protective tube (14) on the outside.

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