High-efficiency energy-saving ionic membrane alkali production device
By setting up a heat circulation mechanism between the electrolysis tank and the solution pool, the heat generated by electrolysis is recovered and used to heat the sodium chloride solution in the solution pool, which solves the problem of reduced solution concentration during electrolysis and achieves efficient and energy-saving caustic soda production.
Patent Information
- Application Number
- CN202423164757.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-21
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-21
AI Technical Summary
In the existing technology, during the electrolysis of brine to produce caustic soda, the decrease in solution concentration leads to a decrease in electrolysis efficiency, and the additional heating of the solution tank increases energy consumption, affecting production stability and cost.
A heat recovery mechanism is used to recover heat from the electrolysis tank and use it to heat the sodium chloride solution in the solution pool, preventing a decrease in solubility, saving energy and improving electrolysis efficiency.
By recycling heat, the temperature and solubility of sodium chloride solution are prevented from decreasing, thus achieving efficient electrolysis, reducing production costs, and improving energy utilization.
Smart Images
Figure CN223607380U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the alkali production technical field, specifically, relate to a kind of efficient energy-saving type ion membrane piece alkali production device. BACKGROUND
[0002] In the chemical industry, caustic soda (sodium hydroxide) as an important basic chemical, in papermaking, textile, printing and dyeing and other fields have a wide range of applications. At present, one of the main preparation methods of caustic soda is through the electrolysis of salt water (NaCl solution), and the selective permeability of ion membrane is used to realize the effective separation of Na+ ion and OH- ion, and then high-purity caustic soda product is prepared. This method not only can effectively improve the purity of product, but also can reduce environmental pollution, has high economic benefit and social benefit.
[0003] However, in the actual production process, with the continuous electrolysis reaction, the concentration of sodium chloride solution in the electrolytic cell gradually decreases, and the decrease of solution concentration will lead to the decrease of electrolysis efficiency, which affects the production rate and cost benefit of caustic soda. In order to ensure the efficiency of electrolytic production, an additional sodium chloride solution pool is usually set up to continuously supplement the saturated sodium chloride solution to the electrolytic cell. However, this supplement strategy introduces new problems. That is, when the ambient temperature decreases, the solubility of sodium chloride in the solution pool will decrease accordingly, which may cause the precipitation of solid sodium chloride, and thus affect the stability and efficiency of the subsequent electrolysis process. Therefore, heating measures are usually taken in the prior art to maintain the temperature of sodium chloride solution in the solution pool, so as to ensure that it always remains at a high solubility level. However, this heating method inevitably increases the energy consumption of the whole production system and improves the production cost.
[0004] For the problems in the related art, no effective solution has been proposed so far. INVENTION CONTENTS
[0005] In view of the problems in the related art, the utility model provides a shockproof high-voltage power distribution cabinet to overcome the above-mentioned technical problems existing in the prior art.
[0006] Therefore, the utility model adopts the specific technical scheme as follows:
[0007] An efficient energy-saving type ion membrane piece alkali production device, comprising a support seat, a electrolytic tank is fixedly installed on one side of the surface of the support seat, a cation exchange membrane is installed in the electrolytic tank, a positive electrode is fixedly installed on one side of the inner wall of the electrolytic tank, and a negative electrode is fixedly installed on the other side, a solution pool is fixedly installed on one side of the electrolytic tank, a liquid supplement pump is fixedly installed on one side of the solution pool, a conveying pipe is fixedly connected to one end of the liquid supplement pump, one end of the conveying pipe is fixedly connected with the electrolytic tank, a sodium chloride solution detector is fixedly installed on one side of the electrolytic tank, and a heat circulation mechanism is arranged between the electrolytic tank and the solution pool.
[0008] Further, in order to recycle the heat generated by electrolysis in the electrolysis tank, the heat circulation mechanism comprises a heat exchanger fixedly installed on one side of the electrolysis tank, a heat recovery pump one fixedly connected to the heat medium inlet of the heat exchanger, one end of the heat recovery pump one fixedly connected to the electrolysis tank, a first pipeline fixedly connected to the heat medium outlet of the heat exchanger, and the other end of the first pipeline fixedly connected to the electrolysis tank.
[0009] Further, in order to use the recycled heat to heat the saturated sodium chloride solution in the solution tank, the heat exchanger is fixedly connected to the heat recovery pump two, one end of the heat recovery pump two is fixedly connected to the solution tank, the heat exchanger is fixedly connected to the heat recovery pump two, and the other end of the second pipeline is fixedly connected to the solution tank.
[0010] Further, in order to facilitate the disassembly and replacement of the cation exchange membrane in the electrolysis tank, the inner wall of the electrolysis tank is provided with a disassembly groove on both sides, the cation exchange membrane is slidably installed in the disassembly groove, and the top of the electrolysis tank is rotatably installed with an adjusting door.
[0011] Further, in order to realize the discharge of the solution after electrolysis in the electrolysis tank, the surface of the electrolysis tank is fixedly connected with a discharge pipe on both sides, and the discharge pipe is fixedly installed with a one-way valve on one side.
[0012] Further, in order to facilitate the observation of the electrolysis tank, an observation window is provided on one side of the surface of the electrolysis tank.
[0013] Further, in order to realize the movement and support of the whole device, rolling wheels are installed on both sides of the bottom surface of the support seat.
[0014] The beneficial effects of the present application are as follows: through the heat exchanger in the heat circulation mechanism, the heat generated during electrolysis in the electrolysis tank is recycled and utilized, the recycled heat is used to heat the saturated sodium chloride solution in the solution tank, the solubility of the sodium chloride solution in the solution tank is effectively prevented from being reduced, and thus efficient electrolysis of the sodium chloride solution during alkali production is realized, without the need for additional heating of the solution tank, saving energy while greatly improving the energy utilization rate during electrolysis. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0016] Figure 1 is a surface structure schematic diagram of an efficient and energy-saving ion membrane caustic soda production device according to the embodiments of the present application.
[0017] Figure 2 It is a back view of a high-efficiency energy-saving ion membrane piece alkali production device according to an embodiment of the present application.
[0018] Figure 3 It is a top view of a high-efficiency energy-saving ion membrane piece alkali production device according to an embodiment of the present application.
[0019] Figure 4 It is a schematic diagram of the internal structure of an electrolytic tank in a high-efficiency energy-saving ion membrane piece alkali production device according to an embodiment of the present application.
[0020] In the figure:
[0021] 1, support seat; 2, electrolytic tank; 3, cation exchange membrane; 4, positive electrode; 5, negative electrode; 6, solution pool; 7, liquid supplementing pump; 8, conveying pipe; 9, sodium chloride solution detector; 10, heat circulation mechanism; 1001, heat exchanger; 1002, heat recovery pump one; 1003, first pipe; 1004, heat recovery pump two; 1005, second pipe; 11, dismounting groove; 12, adjusting door; 13, discharge pipe; 14, one-way valve; 15, observation window; 16, rolling wheel. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] According to an embodiment of the present application, a high-efficiency energy-saving ion membrane piece alkali production device is provided.
[0024] Embodiment one:
[0025] As Figures 1-4As shown, according to the utility model embodiment of a kind of efficient energy-saving ion membrane caustic soda production device, including metal rectangular support seat 1, the surface side of support seat 1 is fixedly installed with electrolytic tank 2, the inside of electrolytic tank 2 is installed with cation exchange membrane 3, the inner wall side of electrolytic tank 2 is fixedly installed with positive electrode 4, the other side is fixedly installed with negative electrode 5, by putting into sodium chloride solution in electrolytic tank 2, after power on, make sodium chloride electrolysis, and utilize the selective permeability of cation exchange membrane 3 to realize Na+ Ion and OH- Ion Effective separation, and then high-purity caustic soda product is made;The side of electrolytic tank 2 is fixedly installed with solution pool 6, for containing a large amount of saturated sodium chloride solution, the side of solution pool 6 is fixedly installed with liquid supplement pump 7, can provide power for the delivery of sodium chloride solution, one end of liquid supplement pump 7 is fixedly connected with conveying pipe 8, one end of conveying pipe 8 is fixedly connected with electrolytic tank 2, the side of electrolytic tank 2 is fixedly installed with sodium chloride solution detector 9, the detector is spectrophotometer, for detecting the concentration of sodium chloride solution in electrolytic tank 2, when sodium chloride solution concentration reduces after electrolysis for a period of time, saturated sodium chloride in solution pool 6 is constantly injected into electrolytic tank 2 by liquid supplement pump 7, realize the efficient electrolysis of sodium chloride solution;Heat circulation mechanism 10 is arranged between electrolytic tank 2 and solution pool 6, for recycling the heat generated when electrolysis in electrolytic tank 2, and the recovered heat is used for heating saturated sodium chloride solution in solution pool 6, to prevent the solubility of sodium chloride solution reduces.
[0026] As Figures 1-4As shown, the heat circulation mechanism 10 includes a heat exchanger 1001 fixedly installed on one side of the electrolytic tank 2, the heat exchanger 1001 is installed between the electrolytic tank 2 and the solution pool 6, and is used for heat exchange between different fluids; the heat medium inlet of the heat exchanger 1001 is fixedly connected with a heat recovery pump one 1002, one end of the heat recovery pump one 1002 is fixedly connected with the electrolytic tank 2, the heat medium outlet of the heat exchanger 1001 is fixedly connected with a first pipeline 1003, and the tail end of the first pipeline 1003 is fixedly connected with the electrolytic tank 2; the heat recovery pump one 1002 is used for sending the liquid with a higher temperature in the electrolytic tank 2 into the heat exchanger 1001 to transfer heat, and then the liquid is sent into the electrolytic tank 2 through the first pipeline 1003 to realize heat transfer and release; the heat medium inlet of the heat exchanger 1001 is fixedly connected with a heat recovery pump two 1004, one end of the heat recovery pump two 1004 is fixedly connected with the solution pool 6, the heat medium outlet of the heat exchanger 1001 is fixedly connected with a second pipeline 1005, and the tail end of the second pipeline 1005 is fixedly connected with the solution pool 6; the heat recovery pump two 1004 is used for sending the saturated sodium chloride solution in the solution pool 6 into the heat exchanger 1001, the saturated sodium chloride solution absorbs heat in the heat exchanger 1001 and then enters the solution pool 6 through the second pipeline 1005, so that the heat generated by electrolysis in the electrolytic tank 2 is continuously transferred to the solution pool 6, and the temperature and solubility of the saturated sodium chloride solution are prevented from being reduced; the inner wall of the electrolytic tank 2 is provided with a dismounting groove 11 on both sides, the cation exchange membrane 3 is slidingly installed in the dismounting groove 11, the electrolytic tank 2 is rotatably provided with an adjusting door 12 on the top, the adjusting door 12 is used for facilitating replacement of the cation exchange membrane 3 after being opened; the surface of the electrolytic tank 2 is fixedly connected with a discharge pipe 13 on both sides, the discharge pipe 13 is fixedly provided with a one-way valve 14 on one side, and is used for discharging the sodium hydroxide solution after electrolysis in the electrolytic tank 2; the surface of the electrolytic tank 2 is provided with an observation window 15 on one side, and is used for facilitating observation of the electrolysis condition; the bottom surface of the support base 1 is rotatably provided with a rolling wheel 16 on both sides, and is used for moving and supporting the support base 1, and facilitates movement of the whole device.
[0027] In order to facilitate the understanding of the above technical scheme of the present application, the working principle or operation mode of the present application in the actual process will be described in detail.
[0028] In summary, by means of the above technical scheme of the utility model, in actual use, the saturated sodium chloride solution in the solution pool 6 is injected into the electrolytic tank 2 through the liquid supplementing pump 7, and after being electrified, the sodium chloride is electrolyzed, and the effective separation of Na+ ions and OH- ions is realized by using the selective permeability of the cation exchange membrane 3, and then the high-purity caustic soda product is prepared, when the sodium chloride solution detector 9 detects that the concentration of the sodium chloride solution in the electrolytic tank 2 is reduced after electrolysis for a period of time, the saturated sodium chloride solution in the solution pool 6 is continuously injected into the electrolytic tank 2 through the liquid supplementing pump 7, realizing the efficient electrolysis in the electrolytic tank 2; when electrolysis, a large amount of heat is generated in the electrolytic tank 2, the liquid with high temperature in the electrolytic tank 2 is sent into the heat exchanger 1001 through the heat recovery pump one 1002 to transfer heat, and then enters the electrolytic tank 2 through the first pipeline 1003, realizing the transfer and release of heat, at the same time, the saturated sodium chloride solution in the solution pool 6 is sent into the heat exchanger 1001 through the heat recovery pump two 1004, the saturated sodium chloride solution absorbs heat in the heat exchanger 1001, and then enters the solution pool 6 through the second pipeline 1005, after such circulation, the heat generated by electrolysis in the electrolytic tank 2 is continuously transferred to the solution pool 6, thereby preventing the temperature and solubility of the saturated sodium chloride solution from being reduced.
[0029] The above merely describes preferred embodiments of the utility model and is not intended to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A high-efficiency energy-saving ion membrane caustic soda production device, characterized in that, The application relates to an electrolysis device, which comprises a supporting base (1), a electrolysis box (2) fixedly installed on one side of the surface of the supporting base (1), a cation exchange membrane (3) installed in the electrolysis box (2), a positive electrode (4) fixedly installed on one side of the inner wall of the electrolysis box (2), a negative electrode (5) fixedly installed on the other side of the electrolysis box (2), a solution pool (6) fixedly installed on one side of the electrolysis box (2), a liquid supplementing pump (7) fixedly installed on one side of the solution pool (6), a conveying pipe (8) fixedly connected to one end of the liquid supplementing pump (7), one end of the conveying pipe (8) fixedly connected with the electrolysis box (2), a sodium chloride solution detector (9) fixedly installed on one side of the electrolysis box (2), and a heat circulation mechanism (10) arranged between the electrolysis box (2) and the solution pool (6). The heat circulation mechanism (10) comprises a heat exchanger (1001) fixedly installed on one side of the electrolysis box (2), a heat recovery pump one (1002) fixedly connected to the heat medium inlet of the heat exchanger (1001), one end of the heat recovery pump one (1002) fixedly connected with the electrolysis box (2), a first pipeline (1003) fixedly connected to the heat medium outlet of the heat exchanger (1001), and the tail end of the first pipeline (1003) fixedly connected with the electrolysis box (2).
2. The high-efficiency energy-saving ion membrane caustic soda production device according to claim 1, characterized in that, The heat exchanger (1001) comprises a heat recovery pump two (1004) fixedly connected to the refrigerant inlet of the heat exchanger (1001), one end of the heat recovery pump two (1004) fixedly connected with the solution pool (6), a second pipeline (1005) fixedly connected to the refrigerant outlet of the heat exchanger (1001), and the tail end of the second pipeline (1005) fixedly connected with the solution pool (6).
3. The high-efficiency energy-saving ion membrane caustic soda production device according to claim 1, characterized in that, The inner wall of the electrolysis box (2) is provided with two dismounting grooves (11), the cation exchange membrane (3) is slidingly installed in the dismounting grooves (11), and an adjusting door (12) is rotatably installed on the top of the electrolysis box (2).
4. The high-efficiency energy-saving ion membrane caustic soda production device according to claim 1, characterized in that, The surface of the electrolysis box (2) is fixedly connected with two discharge pipes (13), and one side of the discharge pipe (13) is fixedly installed with a one-way valve (14).
5. The high-efficiency energy-saving ion membrane caustic soda production device according to claim 1, characterized in that, One side of the surface of the electrolysis box (2) is provided with an observation window (15).
6. The high-efficiency energy-saving ion membrane caustic soda production device according to claim 1, characterized in that, The bottom surface of the supporting base (1) is installed with two rolling wheels (16).