Alkali preparation device for accelerating dissolution of alkali liquor

Abstract

The utility model discloses an alkali preparation device for accelerating dissolution of alkali liquor, which belongs to the technical field of hydrogen production by electrolysis of water and comprises an alkali feeding port, an external nitrogen source inlet, a plurality of nitrogen inlets, a stirring paddle, an alkali box, an engine and a nitrogen channel. An external nitrogen source inlet is formed in the right side of the alkali feeding opening and connected with a nitrogen channel, the nitrogen channel penetrates through the upper wall of the alkali box to be communicated to the bottom of the alkali box, a plurality of nitrogen inlets are formed in the nitrogen channel, an engine is arranged on the left side of the alkali feeding opening, and the output end of the engine is connected with a stirring paddle; alkali liquor in the alkali box is always kept in a uniform mixing state through the joint cooperation of the stirring blades and the nitrogen inlets with different heights, the dissolving process of solid potassium hydroxide can be accelerated, the alkali liquor preparation efficiency is improved, nitrogen is controlled to be conveyed to the nitrogen inlets with different heights by adjusting the nitrogen conveying pressure, and the nitrogen conveying efficiency is improved. The dissolution rate of the solid potassium hydroxide can be more accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production by electrolysis of water, in particular to an alkali preparation device for accelerating the dissolution of alkali solution. Background Art

[0002] With the vigorous development of the hydrogen energy industry, hundreds of megawatt-level new energy water electrolysis hydrogen production projects have been launched one after another, and the importance of water electrolysis hydrogen production technology has become increasingly prominent. The preparation of potassium hydroxide solution with a concentration of 30% is a key link in the process of water electrolysis hydrogen production. Therefore, the alkali preparation rate directly affects the efficiency of hydrogen production and the production capacity of the entire project. An efficient alkali preparation system can ensure the stability of the electrolyte concentration in the electrolyzer and reduce the decline in electrolysis efficiency caused by concentration fluctuations. In large-scale engineering projects, the alkali preparation rate is directly related to the efficiency and production capacity of water electrolysis hydrogen production.

[0003] In the prior art, the preparation of alkali solution of a certain concentration is mainly carried out by manual handling and stirring. This operation method has great problems such as safety, large capacity, high efficiency, and economy. First, manual stirring may cause the alkali solution to splash onto the outside of the alkali tank, even causing damage to the human face, and may also cause problems such as people accidentally falling. Moreover, with the increasing demand for alkali solution of a certain concentration, manual alkali preparation can no longer meet the stable supply of alkali solution demand in the electrolysis water hydrogen production system. Secondly, during the manual handling process, if the operation is improper or careless, the potassium hydroxide packaging may be damaged, leaked or dropped, thereby causing a safety accident. In addition, manual handling requires a large amount of time for solid potassium hydroxide, resulting in low operating efficiency of the electrolysis water hydrogen production device. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides an alkali preparation device for accelerating the dissolution of alkali solution.

[0005] The utility model adopts the following technical solutions.

[0006] The utility model discloses an alkali preparation device for accelerating the dissolution of alkali solution. The device comprises: an alkali injection port, an external nitrogen source inlet, a stirring paddle, an alkali tank, a motor and a nitrogen channel, and is characterized in that:

[0007] An alkali injection port is provided on the upper part of the alkali box, an external nitrogen source inlet is provided on the right side of the alkali injection port, the external nitrogen source inlet is connected to the nitrogen channel, the nitrogen channel passes through the upper wall of the alkali box to the bottom of the alkali box, an engine is provided on the left side of the alkali injection port, and the engine output end is connected to the stirring paddle.

[0008] Preferably, an intelligent sensing device is provided inside the alkali injection port, and an alkali injection cover is provided on the top of the alkali injection port.

[0009] Preferably, a liquid outlet pipe is provided on the alkali tank.

[0010] Preferably, an alkali pump is provided on the liquid outlet pipe.

[0011] Preferably, a liquid return pipe is provided at a position below the liquid outlet pipe corresponding to the lower side of the alkali preparation pump.

[0012] Preferably, a sewage outlet is provided at the lower portion of the alkali tank.

[0013] Preferably, a nitrogen inlet five is provided at the bottom end of the nitrogen channel.

[0014] Preferably, the nitrogen channel is provided with a plurality of nitrogen inlets evenly spaced on the left and right sides.

[0015] Preferably, a desalted water inlet is provided on the upper portion of the alkali tank.

[0016] Preferably, a liquid level gauge is installed on the outer surface of the alkali tank, and the liquid level gauge has a built-in alarm.

[0017] The beneficial effect of the present invention is that, compared with the prior art, the present invention provides an alkali preparation device for accelerating the dissolution of alkali solution, and an alkali preparation pump is provided on the liquid outlet pipe, which can transport the prepared alkali solution to various required systems to realize automatic distribution of alkali solution. At the same time, a return liquid pipe is provided on the lower side of the liquid outlet pipe. When the alkali tank does not discharge liquid, the alkali solution will return to the alkali tank from the return liquid pipe under the drive of the alkali preparation pump, thereby maintaining the circulation of the alkali solution and avoiding crystallization, sedimentation and the like of the alkali solution.

[0018] At the same time, the utility model is provided with stirring blades and nitrogen inlets at different heights inside the alkali box. The stirring blades and the nitrogen inlets at different heights cooperate with each other to keep the alkali solution in the alkali box in a uniformly mixed state at all times, which can accelerate the dissolution process of solid potassium hydroxide and effectively avoid the occurrence of crystallization, thereby improving the efficiency of alkali solution preparation and reducing labor costs. At the same time, by adjusting the nitrogen delivery pressure to control the delivery of nitrogen to nitrogen inlets at different heights, the dissolution rate of solid potassium hydroxide can be more accurately controlled, thereby improving the efficiency of alkali solution preparation.

[0019] The alkali injection port of the utility model is also equipped with a built-in intelligent sensing device. When solid potassium hydroxide moves to the injection port, it automatically triggers the opening of the injection cover, ensuring that the solid potassium hydroxide can be smoothly dropped into the alkali tank. Once the potassium hydroxide on the conveyor belt is completely injected, the injection cover automatically closes under the control of the intelligent sensing device, effectively preventing the splashing of alkali solution and the intrusion of external impurities, realizing the automatic addition of solid potassium hydroxide, saving labor costs and improving safety.

[0020] The bottom of the alkali tank of the utility model is provided with a sewage outlet, which can facilitate the timely discharge of residual alkali liquid or sewage after the alkali tank is used up;

[0021] In summary, the high-efficiency alkali preparation system provided by the utility model can effectively improve the operating efficiency during alkali preparation, and at the same time has the advantages of preventing crystallization, facilitating cleaning, and avoiding safety accidents.

[0022] Compared with the traditional method of manually stirring the alkali preparation, the alkali preparation device provided in this embodiment can accelerate the dissolution of solid potassium hydroxide, thereby greatly improving the working efficiency and avoiding personal injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of an alkali preparation device for accelerating the dissolution of alkali solution according to the present invention;

[0024] In the figure: 1. Desalted water inlet; 2. Alkali dosing port; 3. External nitrogen source inlet; 4. Nitrogen inlet 1; 5. Nitrogen inlet 2; 6. Nitrogen inlet 3; 7. Nitrogen inlet 4; 8. Nitrogen inlet 5; 9. Stirring blade; 10. Sewage outlet; 11. Liquid level gauge; 12. Alkali pump; 13. Alkali tank; 14. Engine; 15. Nitrogen channel; 16. Liquid outlet pipe; 17. Liquid return pipe; 18. Alkali dosing cover. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative efforts are all within the scope of protection of the present invention.

[0026] like Figure 1 As shown, the utility model provides an alkali preparation device for accelerating the dissolution of alkali solution, the device comprises: an alkali injection port 2, an external nitrogen source inlet 3, multiple nitrogen inlets, a stirring paddle 9, an alkali tank 13, an engine 14 and a nitrogen channel 15, the upper outer surface of the alkali tank 13 is provided with an alkali injection port 2, an alkali injection cover 18 is provided on the top of the alkali injection port 2, and an intelligent sensing device is built in the alkali injection port 2. The alkali injection port 2 is used for the injection of solid potassium hydroxide, and an external nitrogen source inlet 3 is provided on the right side of the alkali injection port 2. The external nitrogen source inlet 3 is used to communicate with the outside The nitrogen interface connection allows nitrogen to enter the alkali tank 13, and the left side of the external nitrogen source inlet 3 is connected to the nitrogen channel 15. The nitrogen channel 15 passes through the upper wall of the alkali tank 13 and reaches the bottom of the alkali tank 13. The bottom of the nitrogen channel 15 is a nitrogen inlet 58. At the same time, multiple nitrogen inlets are set on both sides of the nitrogen channel 15; at the same time, an engine 14 is set on the left side of the alkali feeding port 2, and the output end of the engine 14 is connected to the stirring paddle 9. The engine 14 provides a power source for the stirring paddle 9, so that the stirring paddle 9 can rotate to stir and fuse the alkali solution inside the alkali tank 13.

[0027] In a specific embodiment, the automated feeding process of solid potassium hydroxide involves accurately transporting the solid potassium hydroxide to a position above a preset alkali feeding port 2 via a preset conveyor belt. When the solid potassium hydroxide on the conveyor belt is about to reach the alkali feeding port 2, the intelligent sensing device built into the alkali feeding port 2 automatically triggers the opening of the alkali feeding cover 18, ensuring that the solid potassium hydroxide can smoothly fall into the alkali tank 13. Once the potassium hydroxide on the conveyor belt is completely fed, the alkali feeding cover 18 is automatically closed under the control of the intelligent sensing device, effectively preventing the splashing of alkali solution and the intrusion of external impurities.

[0028] At the same time, a desalted water inlet 1 is provided on the upper left outer surface of the alkali tank 13 for introducing desalted water into the alkali tank 13. The desalted water is conducive to the subsequent transportation of alkali solution to other devices for electrolysis of water to produce hydrogen.

[0029] The external nitrogen source inlet 3 is connected to the nitrogen channel 15. The external nitrogen source inlet 3 is used to connect to the external nitrogen interface. The nitrogen channel 15 passes through the upper wall of the alkali tank 13 and reaches the bottom of the alkali tank 13. The bottom end of the nitrogen channel 15 is a nitrogen inlet 5 8. A plurality of nitrogen inlets are evenly and equidistantly arranged on the left and right sides of the nitrogen channel 15. The nitrogen channel 15 is sequentially provided with a nitrogen inlet 1 4, a nitrogen inlet 2 5, a nitrogen inlet 3 6 and a nitrogen inlet 4 7 from top to bottom. The external nitrogen source inlet 3 transports nitrogen to nitrogen inlets at different heights under the pressure of external nitrogen, thereby allowing the nitrogen to reach positions at different heights of the alkali tank 13. The size of the transported nitrogen pressure can be adjusted according to the dissolution of the alkali solution on site, thereby further improving the preparation rate of the alkali solution and making the preparation rate of the alkali solution adjustable.

[0030] Preferably, the number of nitrogen inlets on the left and right sides of the nitrogen channel 15 is adjustable.

[0031] Preferably, nitrogen is introduced into the external nitrogen source inlet 3. Nitrogen has relatively stable chemical properties and does not react chemically with the potassium hydroxide solution under normal conditions. Therefore, when preparing the potassium hydroxide solution, introducing nitrogen into the solution can have a stirring effect, which helps to accelerate the dissolution rate of the potassium hydroxide.

[0032] In order to ensure that the alkali box 13 is easy to clean, a sewage outlet 10 is also provided on the outer surface of the lower left part of the alkali box 13. The sewage outlet 10 is connected to the inside of the alkali box 13. The sewage or remaining alkali solution after cleaning the alkali box 13 can be directly discharged from the sewage outlet 10, which is convenient for the staff to clean and reuse.

[0033] At the same time, a liquid level gauge 11 is installed on the right outer surface of the alkali tank 13 to facilitate observation of the liquid level height of the alkali tank; an alarm is set inside the liquid level gauge 11, which monitors the liquid level and can sound an alarm when the solution exceeds the preset safety range or operating limit to prevent potential dangers such as overflow or drying up.

[0034] A liquid outlet pipe 16 is provided at the lower right portion of the alkali tank 13, and an alkali distribution pump 12 is installed on the liquid outlet pipe 16 at a position corresponding to the lower portion of the liquid level gauge 11. The alkali solution prepared in the alkali tank 13 is transported to each required system by the alkali distribution pump 12, thereby realizing automatic distribution of the alkali solution.

[0035] At the same time, a return liquid pipe 17 is provided on the lower side of the liquid outlet pipe 16 corresponding to the lower position of the alkali distribution pump 12. When no liquid is discharged from the alkali tank 13, the alkali liquid can be returned to the alkali tank 13 from the return liquid pipe 17 under the action of the alkali distribution pump 12, thereby ensuring the recycling of the alkali liquid and avoiding crystallization, sedimentation and the like of the alkali liquid.

[0036] The working principle of the utility model is as follows: desalted water is added to the alkali tank 13 through the desalted water inlet 1, and solid potassium hydroxide is conveyed to a position above the alkali injection port 2 by a conveyor belt. The intelligent sensing device inside the alkali injection port 2 senses the solid potassium hydroxide and automatically opens the alkali injection cover 18, so that the solid potassium hydroxide falls into the desalted water in the alkali tank 13, avoiding the splashing of alkali solution, improving the safety of alkali solution preparation, and realizing the automatic addition of solid potassium hydroxide. Then, the engine 14 is started, and the engine 14 drives the stirring blade 9 to rotate. At the same time, the external nitrogen source inlet 3 is connected to the external nitrogen interface, and nitrogen reaches the inside of the alkali tank 13 through the nitrogen channel 15 under pressure. According to the height of the alkali solution and the solubility degree of the solid potassium hydroxide, the pressure of the nitrogen delivery is adjusted so that the nitrogen is delivered to the nitrogen inlets at different heights. The alkali solution is stirred and mixed together by the nitrogen inlets at different heights and the stirring blades 9, so as to further accelerate the dissolution of the solid potassium hydroxide and improve the preparation efficiency of the alkali solution.

[0037] The beneficial effect of the present invention is that, compared with the prior art, the present invention provides an alkali preparation device for accelerating the dissolution of alkali solution, and an alkali preparation pump is provided on the liquid outlet pipe, which can transport the prepared alkali solution to various required systems to realize automatic distribution of alkali solution. At the same time, a return liquid pipe is provided on the lower side of the liquid outlet pipe. When the alkali tank does not discharge liquid, the alkali solution will return to the alkali tank from the return liquid pipe under the drive of the alkali preparation pump, thereby maintaining the circulation of the alkali solution and avoiding crystallization, sedimentation and the like of the alkali solution.

[0038] At the same time, the utility model is provided with stirring blades and nitrogen inlets at different heights inside the alkali box. The stirring blades and the nitrogen inlets at different heights cooperate with each other to keep the alkali solution in the alkali box in a uniformly mixed state at all times, which can accelerate the dissolution process of solid potassium hydroxide and effectively avoid the occurrence of crystallization, thereby improving the efficiency of alkali solution preparation and reducing labor costs. At the same time, by adjusting the nitrogen delivery pressure to control the delivery of nitrogen to nitrogen inlets at different heights, the dissolution rate of solid potassium hydroxide can be more accurately controlled, thereby improving the efficiency of alkali solution preparation.

[0039] The alkali injection port of the utility model is also equipped with a built-in intelligent sensing device. When solid potassium hydroxide moves to the injection port, it automatically triggers the opening of the injection cover, ensuring that the solid potassium hydroxide can be smoothly dropped into the alkali tank. Once the potassium hydroxide on the conveyor belt is completely injected, the injection cover automatically closes under the control of the intelligent sensing device, effectively preventing the splashing of alkali solution and the intrusion of external impurities, realizing the automatic addition of solid potassium hydroxide, saving labor costs and improving safety.

[0040] The bottom of the alkali tank of the utility model is provided with a sewage outlet, which can facilitate the timely discharge of residual alkali liquid or sewage after the alkali tank is used up;

[0041] In summary, the high-efficiency alkali preparation system provided by the utility model can effectively improve the operating efficiency during alkali preparation, and at the same time has the advantages of preventing crystallization, facilitating cleaning, and avoiding safety accidents.

[0042] Compared with the traditional method of manually stirring the alkali preparation, the alkali preparation device provided in this embodiment can accelerate the dissolution of solid potassium hydroxide, thereby greatly improving the working efficiency and avoiding personal injury.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A alkali preparation device for accelerating the dissolution of alkali solution, comprising: The alkali injection port (2), the external nitrogen source inlet (3), the stirring blade (9), the alkali tank (13), the engine (14) and the nitrogen channel (15) are characterized by: An alkali injection port (2) is provided on the upper portion of the alkali tank (13), an external nitrogen source inlet (3) is provided on the right side of the alkali injection port (2), the external nitrogen source inlet (3) is connected to a nitrogen channel (15), the nitrogen channel (15) passes through the upper wall of the alkali tank (13) and reaches the bottom of the alkali tank (13), an engine (14) is provided on the left side of the alkali injection port (2), and an output end of the engine (14) is connected to a stirring paddle (9).

2. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 1, characterized in that: An intelligent sensing device is provided inside the alkali injection port (2), and an alkali injection cover (18) is provided on the top of the alkali injection port (2).

3. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 1, characterized in that: A liquid outlet pipe (16) is provided at the lower part of the alkali tank (13).

4. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 3, characterized in that: An alkali pump (12) is provided on the liquid outlet pipe (16).

5. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 4, characterized in that: A liquid return pipe (17) is provided on the lower side of the liquid outlet pipe (16) corresponding to the lower position of the alkali dispensing pump (12).

6. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 1, characterized in that: A sewage outlet (10) is provided at the lower portion of the alkali tank (13).

7. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 1, characterized in that: A nitrogen inlet five (8) is provided at the bottom end of the nitrogen channel (15).

8. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 7, characterized in that: The nitrogen channel (15) is evenly spaced and provided with a plurality of nitrogen inlets on the left and right sides.

9. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 1, characterized in that: A desalted water inlet (1) is provided on the upper portion of the alkali tank (13).

10. The alkali preparation device for accelerating the dissolution of alkali solution according to claim 1, characterized in that: A liquid level meter (11) is installed on the outer surface of the alkali tank (13), and the liquid level meter (11) has a built-in alarm.

Images