Anti-corrosion and anti-leakage chlor-alkali production equipment

Abstract

The utility model relates to the technical field of chlor-alkali production, in particular to anti-corrosion and anti-leakage chlor-alkali production equipment. The utility model provides the anti-corrosion and anti-leakage chlor-alkali production equipment which can protect the liquid outlet pipe and prevent the liquid outlet pipe from being corroded to cause solution leakage. Anti-corrosion and anti-leakage chlor-alkali production equipment comprises an electrolytic tank, a water inlet pipe, a sampling pipe, gas outlet pipes and the like, the front side of the left lower part of the electrolytic tank is connected with the water inlet pipe, the left side of the upper part of the electrolytic tank is connected with the sampling pipe, and the upper side of the rear part of the electrolytic tank is connected with the left gas outlet pipe and the right gas outlet pipe. According to the utility model, the power supply is used for supplying power, the lead applies external current to the liquid outlet pipe, so that the liquid outlet pipe becomes an anode in electrochemical reaction, and the potential is controlled, so that a layer of passive film is formed on the liquid outlet pipe, the corrosion process of the liquid outlet pipe is inhibited, and the effects of protecting the liquid outlet pipe and preventing the liquid outlet pipe from being corroded to cause solution leakage are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chlor alkali production technical field especially relates to a kind of anticorrosive leakage-proof chlor alkali production equipment. BACKGROUND

[0002] Chlor alkali production mainly refers to the process of producing chlorine (Cl2), sodium hydroxide (NaOH, commonly known as caustic soda) and hydrogen (H2) by electrolyzing brine (NaCl solution).

[0003] The existing chlor alkali production equipment, the main body usually adopts electrolytic cell, the sodium hydroxide solution obtained after electrolysis is collected in the collecting tank through the liquid outlet pipe, but due to the strong corrosive nature of sodium hydroxide solution, long-term flow in the liquid outlet pipe can easily cause corrosion to the liquid outlet pipe, leading to damage of the liquid outlet pipe and further solution leakage.

[0004] Therefore, an anticorrosive leakage-proof chlor alkali production equipment that can protect the liquid outlet pipe from corrosion and prevent solution leakage has been developed. UTILITY MODEL CONTENTS

[0005] To overcome the shortcomings of the existing chlor alkali production equipment, the strong corrosive nature of sodium hydroxide solution, long-term flow in the liquid outlet pipe can easily cause corrosion to the liquid outlet pipe, leading to damage of the liquid outlet pipe and further solution leakage, the utility model provides an anticorrosive leakage-proof chlor alkali production equipment that can protect the liquid outlet pipe from corrosion and prevent solution leakage.

[0006] An anticorrosive leakage-proof chlor alkali production equipment includes an electrolytic cell, a water inlet pipe, a sampling pipe, an air outlet pipe, an anode, a cathode, a concentrated brine inlet pipe, a liquid outlet pipe, an ion exchange membrane, a protection assembly, a storage assembly, and a pressure regulating assembly. The electrolytic cell is connected to the water inlet pipe on the left lower front side, the sampling pipe on the upper left side, the air outlet pipes on the upper right and left sides, the anode on the left side, the cathode on the right side, the concentrated brine inlet pipe on the right lower front side, the liquid outlet pipe on the right lower side, the ion exchange membrane in the middle, the protection assembly on the liquid outlet pipe, the storage assembly on the liquid outlet pipe, and the pressure regulating assembly on the storage assembly.

[0007] Further, the protection assembly includes a protective cover, a power supply, and wires. The liquid outlet pipe is connected to the wires on both sides. The wires are connected to the power supply on the lower side. The wires are equipped with protective covers on the lower part. The protective covers are connected to the protective covers on the lower side in a threaded manner. The power supply is located inside the adjacent protective cover.

[0008] Further, the protective cover is provided with a heat dissipation hole on the lower side.

[0009] Further, the storage assembly comprises a first control valve, support columns, a liquid discharge pipe, a storage tank, a heat preservation layer, a metal alloy shell and an enamel layer, the liquid discharge pipe is provided with the first control valve, the right side of the liquid discharge pipe is connected with the storage tank, the lower side of the storage tank is connected with a plurality of support columns, the lower side of the middle of the storage tank is connected with the liquid discharge pipe, the liquid discharge pipe is also provided with the first control valve, the inside of the storage tank is connected with the heat preservation layer, the inside of the heat preservation layer is connected with the metal alloy shell, and the inside of the metal alloy shell is connected with the enamel layer.

[0010] Further, the lower part of the storage tank is conical.

[0011] Further, the pressure regulating assembly comprises a pressure sensor, an air pipe and a second control valve, the right part of the storage tank is connected with the pressure sensor on the upper side, the middle of the storage tank is connected with the air pipe on the upper side, the air pipe is provided with the second control valve, and the second control valve is connected with the pressure sensor through electricity.

[0012] The utility model discloses a beneficial effect is: 1, the utility model discloses a power supply, makes the wire to the liquid discharge pipe external current, makes the liquid discharge pipe become the anode in electrochemistry, controls the potential again, makes the liquid discharge pipe form a passivation film, restrains the corrosion process of liquid discharge pipe, reaches the effect of being able to protect the liquid discharge pipe, prevents the corrosion of liquid discharge pipe and leads to the solution leakage.

[0013] 2, the utility model discloses a pressure sensor to the internal pressure of storage tank is monitored, when the internal pressure is too big, the second control valve opens, and exhausts through the air pipe, reaches the effect of being able to relieve the internal pressure of storage tank. ACCURACY

[0014] Figure 1 It is the three -dimensional structure schematic diagram of the utility model.

[0015] Figure 2 It is the structure schematic diagram of electrolytic cell and the component of the utility model.

[0016] Figure 3 It is the structure schematic diagram of storage tank and the component of the utility model.

[0017] Figure 4 It is the structure schematic diagram of protection cover and the component of the utility model.

[0018] In the above drawing, 1: electrolytic cell, 101: water inlet pipe, 102: sampling pipe, 103: air outlet pipe, 104: anode, 105: cathode, 106: concentrated brine inlet pipe, 107: liquid outlet pipe, 108: ion exchange membrane, 2: protection cover, 21: power supply, 3: wire, 4: first control valve, 5: support column, 6: liquid discharge pipe, 7: storage tank, 701: heat preservation layer, 702: metal alloy shell, 703: enamel layer, 8: pressure sensor, 9: air pipe, 10: second control valve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] An anticorrosion and leakage-proof chlor-alkali production equipment, such as Figures 1-4As shown, including electrolytic cell 1, water inlet pipe 101, sampling pipe 102, gas outlet pipe 103, anode 104, cathode 105, concentrated brine inlet pipe 106, liquid outlet pipe 107, ion exchange membrane 108, protection assembly, storage assembly and pressure regulating assembly, the lower left front side of the electrolytic cell 1 is connected with the water inlet pipe 101, the upper left side of the electrolytic cell 1 is connected with the sampling pipe 102, the rear upper side of the electrolytic cell 1 is connected with the left and right two gas outlet pipes 103, the left part of the electrolytic cell 1 is connected with the anode 104, the right part of the electrolytic cell 1 is connected with the cathode 105, the lower right front side of the electrolytic cell 1 is connected with the concentrated brine inlet pipe 106, the lower right side of the electrolytic cell 1 is connected with the liquid outlet pipe 107, the middle part of the electrolytic cell 1 is connected with the ion exchange membrane 108, and the liquid outlet pipe 107 is provided with a protection assembly; the protection assembly comprises a protection cover 2, a power supply 21 and a wire 3, the left and right parts of the liquid outlet pipe 107 are connected with the wire 3, the lower side of the wire 3 is connected with the power supply 21, the lower part of the wire 3 is provided with a protection cover, the lower side of the protection cover is threadedly connected with the protection cover 2, the lower side of the protection cover 2 is provided with a heat dissipation hole for heat dissipation, and the power supply 21 is located in the adjacent protection cover 2; the liquid outlet pipe 107 is also provided with a storage assembly; the storage assembly comprises a first control valve 4, a support column 5, a liquid discharge pipe 6, a storage tank 7, a heat preservation layer 701, a metal alloy shell 702 and an enamel layer 703, the liquid outlet pipe 107 is provided with a first control valve 4, the right side of the liquid outlet pipe 107 is connected with the storage tank 7, the lower part of the storage tank 7 is tapered for easy liquid discharge, the lower side of the storage tank 7 is connected with four support columns 5, the lower middle part of the storage tank 7 is connected with the liquid discharge pipe 6, the liquid discharge pipe 6 is also provided with the first control valve 4, the inside of the storage tank 7 is connected with the heat preservation layer 701, the inside of the heat preservation layer 701 is connected with the metal alloy shell 702, and the inside of the metal alloy shell 702 is connected with the enamel layer 703; the storage assembly is provided with a pressure regulating assembly; the pressure regulating assembly comprises a pressure sensor 8, a breather pipe 9 and a second control valve 10, the right upper side of the storage tank 7 is connected with the pressure sensor 8, the middle upper side of the storage tank 7 is connected with the breather pipe 9, the breather pipe 9 is provided with the second control valve 10, and the second control valve 10 is electrically connected with the pressure sensor 8.

[0021] When the utility model is used, first, the purified brine is introduced into the electrolytic cell 1 through the concentrated brine inlet pipe 106, the pure water is introduced into the electrolytic cell 1 through the water inlet pipe 101, under the action of direct current, the anode 104 generates chlorine gas by oxidation reaction, and hydrogen ions are generated at the same time; the cathode 105 generates hydrogen gas and sodium hydroxide solution by reduction reaction, the ion exchange membrane 108 allows sodium ions to migrate from the anode 104 side to the cathode 105 side, and prevents chlorine gas from directly contacting sodium hydroxide, thereby ensuring the purity of the product; after electrolysis for a certain period of time, the sample is taken and detected through the sampling pipe 102; when the brine is electrolyzed to a certain extent, the first control valve 4 is opened, the sodium hydroxide solution is introduced into the storage tank 7 from the liquid outlet pipe 107, the support column 5 supports the storage tank 7, the chlorine gas is discharged from the gas outlet pipe 103, and the sodium hydroxide solution flows into the liquid outlet pipe 107; the power supply 21 can be powered, the protective cover 2 protects the power supply 21, the external current is applied to the liquid outlet pipe 107 through the lead 3, so that the liquid outlet pipe 107 becomes the anode 104 in the electrochemical reaction, and a passivation film is formed on the liquid outlet pipe 107 by controlling the potential, thereby inhibiting the corrosion process of the liquid outlet pipe 107, thereby protecting the liquid outlet pipe 107 and preventing the liquid outlet pipe 107 from being corroded to cause solution leakage; after the sodium hydroxide solution enters the storage tank 7, the heat preservation layer 701 maintains the internal temperature of the storage tank 7, the metal alloy shell 702 provides the necessary mechanical strength and protection, the enamel layer 703 is used to prevent the metal alloy shell 702 from being corroded, the pressure sensor 8 monitors the internal pressure of the storage tank 7, when the internal pressure is too large, the second control valve 10 is opened, and the gas is discharged through the air pipe 9, thereby relieving the internal pressure of the storage tank 7; when the sodium hydroxide solution needs to be discharged, the liquid outlet pipe 6 is opened to discharge it.

[0022] Although the utility model has been described with reference to the example embodiment, it should be understood that the utility model is not limited to the disclosed example embodiment. The scope of the following claims should be given the broadest interpretation so as to encompass all variations and equivalent structures and functions.

Claims

1. A corrosion-resistant and leak-proof chlor-alkali production equipment, characterized in that: The electrolytic cell (1) includes an inlet pipe (101), a sampling pipe (102), an outlet pipe (103), an anode (104), a cathode (105), a concentrated brine inlet pipe (106), an outlet pipe (107), an ion exchange membrane (108), a protection assembly, a storage assembly, and a pressure regulating assembly. The inlet pipe (101) is connected to the lower left front of the electrolytic cell (1), the sampling pipe (102) is connected to the upper left side of the electrolytic cell (1), and two outlet pipes (103) are connected to the upper rear of the electrolytic cell (1). An anode (104) is connected to the left side of the electrolytic cell (1), a cathode (105) is connected to the right side of the electrolytic cell (1), a concentrated brine inlet pipe (106) is connected to the lower right front side of the electrolytic cell (1), an outlet pipe (107) is connected to the lower right side of the electrolytic cell (1), an ion exchange membrane (108) is connected to the middle of the electrolytic cell (1), a corrosion-resistant protective component is provided on the outlet pipe (107), a storage component for storing the solution is also provided on the outlet pipe (107), and a pressure regulating component for adjusting the internal pressure is provided on the storage component.

2. A corrosion-resistant and leak-proof chlor-alkali production equipment according to claim 1, characterized in that: The protective components include a protective cover (2), a power supply (21), and wires (3). The left and right sides of the liquid outlet pipe (107) are connected to wires (3), and the lower side of each wire (3) is connected to a power supply (21). Each wire (3) is provided with a protective cover at the bottom, and the lower side of each protective cover is threadedly connected to a protective cover (2). The power supply (21) is located inside the adjacent protective cover (2).

3. A corrosion-resistant and leak-proof chlor-alkali production equipment according to claim 2, characterized in that: The protective cover (2) has heat dissipation holes on the lower side.

4. A corrosion-resistant and leak-proof chlor-alkali production equipment according to claim 2, characterized in that: The storage assembly includes a first control valve (4), a support column (5), a drain pipe (6), a storage tank (7), an insulation layer (701), a metal alloy shell (702), and an enamel layer (703). The first control valve (4) is provided on the drain pipe (107). The storage tank (7) is connected to the right side of the drain pipe (107). Multiple support columns (5) are connected to the lower side of the storage tank (7). The drain pipe (6) is connected to the lower middle part of the storage tank (7). The first control valve (4) is also provided on the drain pipe (6). The insulation layer (701) is connected inside the storage tank (7). The metal alloy shell (702) is connected inside the insulation layer (701). The enamel layer (703) is connected inside the metal alloy shell (702).

5. A corrosion-resistant and leak-proof chlor-alkali production equipment according to claim 4, characterized in that: The lower part of the storage tank (7) is conical.

6. A corrosion-resistant and leak-proof chlor-alkali production equipment according to claim 4, characterized in that: The pressure regulating assembly includes a pressure sensor (8), a vent pipe (9), and a second control valve (10). The pressure sensor (8) is connected to the upper right side of the storage tank (7), and the vent pipe (9) is connected to the upper middle side of the storage tank (7). The second control valve (10) is provided on the vent pipe (9), and the second control valve (10) is electrically connected to the pressure sensor (8).

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