A kind of integrated equipment of vacuum addition and waste gas recovery of all-vanadium redox flow battery reducing agent

Abstract

The application discloses a kind of all-vanadium redox flow battery reducing agent vacuum addition and waste gas recovery integrated equipment, and relates to the technical field of all-vanadium redox flow battery, including feeding assembly, vacuum suction and blowing assembly, waste gas recovery assembly, the application is automatically extracted reducing agent by vacuum negative pressure principle, after the reducing agent in hopper is sucked full, by the reverse of vacuum pump, positive pressure is generated, and reducing agent is automatically blown into electrolyte barrel, the risk of reducing agent spilling is reduced to the greatest extent, and the safety of reducing agent adding operation is improved.And it has the function of waste gas recovery, a double-pass reducing port is added at the bucket cover, the large mouth is used for reducing agent addition, the small mouth is used for the toxic and harmful gases such as chlorine and hydrochloric acid generated during reducing agent addition, which is extracted in time by using the air extraction device, and is discharged after being absorbed by sodium hydroxide solution, improving the safety of reducing agent adding operation, and reducing the pollution to atmospheric environment.

Description

Technical Field

[0001] The present invention relates to the technical field of all-vanadium redox flow batteries, and in particular to an integrated device for vacuum addition of reducing agents and waste gas recovery of all-vanadium redox flow batteries. Background Art

[0002] At present, after a period of operation, the commercialized all-vanadium liquid flow battery system will experience an increase in the comprehensive valence state of the positive and negative electrolytes due to side reactions occurring during operation, and the battery polarization will intensify at the end of charge and discharge, which will lead to a decrease in the capacity and efficiency of the battery system. In order to restore the comprehensive valence state, a reducing agent is usually added to the positive electrode electrolyte.

[0003] At present, when adding reducing agents, there is no better equipment to assist in the addition of reducing agents. Usually, a simple device assembled with a plastic hose and a funnel is used. The reducing agent is slowly poured into the funnel manually, and the reducing agent enters the electrolyte barrel along the plastic hose. Since the reducing agent often uses acidic materials such as citric acid, when adding it using a funnel, people need to continue to pour it slowly, which may cause the reducing agent to spill and cause damage to human skin; secondly, the amount of reducing agent added is large. If it is added manually, the work intensity is high and the work efficiency is low; finally, when adding the reducing agent, due to the violent redox reaction in the positive electrode electrolyte barrel, a large amount of carbon dioxide and reaction heat will be generated. When the electrolyte temperature rises, hydrochloric acid and chlorine will be brought out, which will cause certain damage to the human respiratory tract and pollute the environment. Summary of the Invention

[0004] The object of the present invention is to provide an integrated device for vacuum addition of reducing agent and waste gas recovery for all-vanadium redox flow batteries, so as to overcome the above-mentioned defects in the prior art.

[0005] An all-vanadium redox flow battery reducing agent vacuum addition and waste gas recovery integrated equipment, including a feeding component, a vacuum suction and blowing component, and a waste gas recovery component;

[0006] The loading assembly is arranged on the first and second movable racks and is used to store the reducing agent;

[0007] The vacuum suction and blowing assembly is arranged on the third movable frame and is used to automatically add the reducing agent in the feeding assembly into the electrolyte barrel;

[0008] The waste gas recovery component is used to treat the toxic and harmful gases generated in the electrolyte barrel and then discharge them to the outside.

[0009] Preferably, the feeding assembly includes a hopper, an air-material separator and a silo. The movable frame 1 is arranged on the double-pass cover of the electrolyte barrel. The hopper is arranged on the movable frame 1 and the bottom thereof is connected to a discharge pipe through a discharge solenoid valve. The discharge pipe is inserted into the electrolyte barrel through the large opening on the double-pass cover. The air-material separator is arranged at the upper part of the hopper. The silo is arranged on the movable frame 2 and the bottom thereof is provided with a suction pipe connected to the suction port of the hopper. A suction solenoid valve is provided on the suction pipe, and a suction filter is provided in the silo.

[0010] Preferably, a full material infrared radiation sensor and a short material infrared radiation sensor are sequentially provided on the inner wall of the hopper below the suction port from top to bottom.

[0011] Preferably, the vacuum suction and blowing assembly includes a vacuum pump and a dust collecting bucket. The vacuum pump is installed at the lower part of the mobile frame three, and the dust collecting bucket is installed at the upper part of the mobile frame three. The air inlet of the vacuum pump is connected to the top of the dust collecting bucket through an air inlet pipe, and the side of the dust collecting bucket is connected to the air inlet on the side of the hopper through an air suction pipe. An air filter is provided inside the dust collecting bucket.

[0012] Preferably, the waste gas recovery component includes a recovery pipe, a filter, an air-extraction diaphragm pump and a recovery tank. One end of the recovery pipe is inserted into the small opening on the double-way cover, and the other end of the recovery pipe is inserted into the recovery tank containing sodium hydroxide solution. An exhaust pipe is provided on the top of the recovery pipe, and the filter and the air-extraction diaphragm pump are arranged on the recovery pipe in sequence from bottom to top.

[0013] Preferably, the bottoms of the movable frame 1, the movable frame 2 and the movable frame 3 are each provided with a plurality of locking pulleys.

[0014] The beneficial effects achieved by the present invention are:

[0015] 1. This application has a movable pulley and a locking device, which can realize the function of moving and fixing on the upper part of the capacity box, thereby improving the convenience of using the equipment and improving the reliability of the equipment.

[0016] 2. This application has the function of storing and absorbing reducing agent, which can automatically absorb the reducing agent and pour it into the electrolyte barrel, reducing the number of manual labor, thereby reducing labor cost investment and greatly improving efficiency.

[0017] 3. This application uses the vacuum negative pressure principle to automatically absorb the reducing agent. After the reducing agent in the hopper is full, the reverse rotation of the vacuum pump generates positive pressure and automatically blows the reducing agent into the electrolyte barrel, thereby minimizing the risk of reducing agent spillage and improving the safety of the reducing agent addition operation.

[0018] 4. This application has the function of waste gas recovery. A two-way reducing port is added to the barrel cover. The large port is used for adding reducing agent, and the small port is used to extract chlorine, hydrochloric acid and other toxic and harmful gases generated during the reducing agent addition process in time using a vacuum device. The gases are absorbed by sodium hydroxide solution and then discharged, thereby improving the safety of the reducing agent addition operation and reducing pollution to the atmospheric environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0020] Figure 2 It is a schematic structural diagram of the feeding assembly and the waste gas recovery assembly of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the vacuum suction and blowing component of the present invention

[0022] Figure 4 This is a mode control logic diagram of the infrared radiation sensor of the present invention.

[0023] Figure 5 It is an operation flow chart of the present invention.

[0024] In the figure, 1. Feeding assembly; 11. Hopper; 111. Suction port; 112. Full material infrared counter-radiation sensor; 113. Lack of material infrared counter-radiation sensor; 114. Intake port; 12. Discharge solenoid valve; 13. Discharge pipe; 14. Air-material separator; 15. Hopper; 16. Suction pipe; 17. Suction solenoid valve; 18. Suction filter; 2. Mobile rack 1; 3. Mobile rack 2; 4. Vacuum suction and blowing assembly; 41. Vacuum pump; 42. Dust collection bucket; 421. Air filter; 43. Intake pipe; 44. Intake pipe; 5. Mobile rack 3; 6. Electrolyte barrel; 61. Double-pass cover; 62. Large mouth; 63. Small mouth; 7. Waste gas recovery assembly; 71. Recovery pipe; 72. Recovery tank; 73. Exhaust pipe; 74. Filter; 75. Vacuum diaphragm pump; 8. Locking pulley. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention.

[0026] like Figure 1-3As shown, the present invention provides an integrated device for vacuum addition of reducing agent and waste gas recovery of all-vanadium redox flow batteries, including a feeding component 1, a vacuum suction and blowing component 4, and a waste gas recovery component 7. The feeding component 1 is arranged on the mobile frame 1 2 and the mobile frame 2 3 and is used to store the reducing agent; the vacuum suction and blowing component 4 is arranged on the mobile frame 3 5 and is used to automatically add the reducing agent in the feeding component 1 into the electrolyte barrel 6; the waste gas recovery component 7 is used to treat the toxic and harmful gases generated in the electrolyte barrel 6 and discharge them to the outside; the bottom of the mobile frame 1 2, the mobile frame 2 3 and the mobile frame 3 5 are all provided with a plurality of locking pulleys 8.

[0027] It should be noted that the feeding assembly 1 includes a hopper 11, an air-material separator 14 and a silo 15. The mobile frame 2 is arranged on the double-pass cover 61 of the electrolyte barrel 6. The hopper 11 is arranged on the mobile frame 2 and its bottom is connected to a discharge pipe 13 through a discharge solenoid valve 12. The discharge pipe 13 is inserted into the electrolyte barrel 6 through the large opening 62 on the double-pass cover 61. The air-material separator 14 is arranged in the upper part of the hopper 11. The inner wall of the hopper 11 is provided with a full material infrared radiation sensor 112 and a short material infrared radiation sensor 113 from top to bottom below the suction port 111. See Figure 4 The amount of reducing agent in the hopper 11 is monitored by the full-material infrared radiation sensor 112 and the insufficient-material infrared radiation sensor 113, so that the motor of the vacuum pump 41 is controlled by the controller to perform forward and reverse movements. The hopper 15 is arranged on the movable frame 2 3 and has a suction pipe 16 connected to the suction port 111 of the hopper 11 at the bottom. The suction pipe 16 is provided with a suction solenoid valve 17, and a suction filter 18 is provided in the hopper 15.

[0028] In addition, the vacuum suction and blowing assembly 4 includes a vacuum pump 41 and a dust collecting bucket 42. The vacuum pump 41 is installed at the lower part of the mobile frame 3 5, and the dust collecting bucket 42 is installed at the upper part of the mobile frame 3 5. The air inlet of the vacuum pump 41 is connected to the top of the dust collecting bucket 42 through the air inlet pipe 43, and the side of the dust collecting bucket 42 is connected to the air intake 114 on the side of the hopper 11 through the air intake pipe 44. An air filter 421 is provided inside the dust collecting bucket 42.

[0029] In addition, the waste gas recovery component 7 includes a recovery pipe 71, a filter 74, an air extraction diaphragm pump 75 and a recovery tank 72. One end of the recovery pipe 71 is inserted into the small opening 63 on the double-way cover 61, and the other end of the recovery pipe 71 is inserted into the recovery tank 72 filled with sodium hydroxide solution. An exhaust pipe 73 is provided at the top of the recovery pipe 71, and the filter 74 and the air extraction diaphragm pump 75 are arranged on the recovery pipe 71 from bottom to top.

[0030] The reducing agent suction operation process is as follows Figure 5As shown, through the vacuum negative pressure principle, the suction solenoid valve 17 on the suction pipe 16 is opened. When the motor of the vacuum pump 41 rotates forward, negative pressure is generated in the hopper 11, and the reducing agent is automatically sucked from the silo 15 into the hopper 11. The gas-material mixture is separated by the gas-material separator 14 in the hopper 11. The reducing agent remains in the hopper, and the gas enters the dust collecting bucket 42 through the suction pipe 44 and is filtered by the air filter 421 in the dust collecting bucket 42. The gas is discharged from the vacuum pump 41;

[0031] When the reducing agent in the hopper 11 is fully absorbed, the motor of the vacuum pump 41 is reversed to generate positive pressure, which opens the discharge solenoid valve 12 on the discharge pipe 13 at the bottom of the hopper 11 and automatically blows the reducing agent into the electrolyte barrel 6;

[0032] During the reducing agent addition process, toxic and harmful gases such as chlorine and hydrochloric acid generated in the electrolyte barrel 6 are promptly extracted by the exhaust diaphragm pump 75 on the recovery pipe 71, filtered through the filter 74, and then passed into the sodium hydroxide solution in the recovery tank 72 for absorption, and finally discharged through the exhaust pipe 73 on the recovery tank 72.

[0033] The above-described embodiments of the present invention do not limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An integrated equipment for vacuum addition of reducing agent and waste gas recovery for all-vanadium redox flow batteries, characterized by: It comprises a feeding component (1), a vacuum suction and blowing component (4), and an exhaust gas recovery component (7); The loading assembly (1) is arranged on the first movable rack (2) and the second movable rack (3) and is used to store the reducing agent; The vacuum suction and blowing assembly (4) is arranged on the movable frame 3 (5) and is used to automatically add the reducing agent in the feeding assembly (1) into the electrolyte barrel (6); The waste gas recovery component (7) is used to process the toxic and harmful gases generated in the electrolyte barrel (6) and then discharge them to the outside; The feeding assembly (1) includes a hopper (11), an air-material separator (14) and a silo (15); the movable frame (2) is arranged on the double-pass cover (61) of the electrolyte barrel (6); the hopper (11) is arranged on the movable frame (2) and the bottom thereof is connected to a discharge pipe (13) through a discharge solenoid valve (12); the discharge pipe (13) is inserted into the electrolyte barrel (6) through a large opening (62) on the double-pass cover (61); the air-material separator (14) is arranged at the upper part of the hopper (11); the silo (15) is arranged on the movable frame (3) and the bottom thereof is provided with a suction pipe (16) connected to the suction port (111) of the hopper (11); the suction pipe (16) is provided with a suction solenoid valve (17); and the silo (15) is provided with a suction filter (18); The inner wall of the hopper (11) is provided with a full material infrared radiation sensor (112) and a short material infrared radiation sensor (113) in order from top to bottom below the material suction port (111); The vacuum suction and blowing assembly (4) includes a vacuum pump (41) and a dust collecting bucket (42). The vacuum pump (41) is installed at the lower part of the mobile frame three (5), and the dust collecting bucket (42) is installed at the upper part of the mobile frame three (5). The air inlet of the vacuum pump (41) is connected to the top of the dust collecting bucket (42) through an air inlet pipe (43), and the side of the dust collecting bucket (42) is connected to the air inlet (114) on the side of the hopper (11) through an air suction pipe (44). An air filter (421) is provided inside the dust collecting bucket (42).

2. The all-vanadium redox flow battery reducing agent vacuum addition and waste gas recovery integrated equipment according to claim 1, characterized in that: The waste gas recovery component (7) comprises a recovery pipe (71), a filter (74), an air extraction diaphragm pump (75) and a recovery tank (72); one end of the recovery pipe (71) is plugged into a small opening (63) on a double-pass cover (61); the other end of the recovery pipe (71) is plugged into a recovery tank (72) containing a sodium hydroxide solution; an exhaust pipe (73) is provided at the top of the recovery pipe (71); and the filter (74) and the air extraction diaphragm pump (75) are sequentially arranged on the recovery pipe (71) from bottom to top.

3. The all-vanadium redox flow battery reducing agent vacuum addition and waste gas recovery integrated equipment according to claim 1, characterized in that: The bottoms of the movable frame 1 (2), the movable frame 2 (3) and the movable frame 3 (5) are all provided with a plurality of locking pulleys (8).

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