Humidifier for preparing formic acid by electrolyzing carbon dioxide

Abstract

The utility model discloses a humidifier for preparing formic acid by electrolyzing carbon dioxide, which belongs to the technical field of carbon dioxide electrolysis and comprises a shell and a sealing cover mounted on the surface of the shell, a partition plate is fixed in the shell, a gas distributor is mounted on the outer wall of one side of the partition plate, and a plurality of limit frames are mounted on the inner walls of two sides of the shell. A humidifying plate is inserted between the two limiting frames, a plurality of through holes are evenly distributed in each humidifying plate, an air outlet hole is formed in the outer wall of one side of the shell, an air outlet pipe is fixed in the air outlet hole, a circulating pipe is installed between the air outlet pipe and the shell, a mounting frame is fixed to the surface of the sealing cover, and a water supply pipe is installed in the mounting frame. According to the humidifier for preparing formic acid through electrolysis of carbon dioxide, uniform humidification of carbon dioxide gas can be achieved, the humidity adjusting range is widened, the structure is simplified, the operation cost is reduced, and the efficiency and quality of preparing formic acid through electrolysis of carbon dioxide are improved.

Description

Technical Field

[0001] This utility model belongs to the field of carbon dioxide electrolysis technology, specifically relating to a humidifier for producing formic acid by carbon dioxide electrolysis. Background Technology

[0002] Formic acid is one of the basic organic chemical raw materials, widely used in industries such as pesticides, leather, dyes, pharmaceuticals and rubber. Formic acid can be used directly in textile processing, tanning, textile printing and dyeing and storage of forage, and can also be used as a metal surface treatment agent, rubber additive and industrial solvent.

[0003] In the process of producing formic acid by carbon dioxide electrolysis, the humidification process has a significant impact on reaction efficiency and product purity. Carbon dioxide gas with appropriate humidity can promote the electrolysis reaction and improve the yield and quality of formic acid. Existing humidifiers have certain shortcomings, such as uneven humidification, leading to inconsistent humidity of the carbon dioxide gas entering the electrolysis unit, which affects the stability and efficiency of the electrolysis reaction. Utility Model Content

[0004] The purpose of this invention is to provide a humidifier for the production of formic acid by carbon dioxide electrolysis, in order to solve the problem mentioned in the background art, which is that uneven humidification leads to inconsistent humidity of carbon dioxide gas entering the electrolysis device, affecting the stability and efficiency of the electrolysis reaction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a humidifier for producing formic acid by carbon dioxide electrolysis, comprising a shell and a sealing cover installed on the surface of the shell, a partition fixed inside the shell, and a gas distributor installed on one side of the outer wall of the partition, multiple limiting frames installed on both sides of the inner wall of the shell, a humidifying plate inserted between two of the limiting frames, multiple through holes evenly distributed on each of the humidifying plates, an air outlet hole opened on one side of the outer wall of the shell, and an air outlet pipe fixed inside the air outlet hole, a circulation pipe installed between the air outlet pipe and the shell, and a mounting bracket fixed on the surface of the sealing cover, and a water supply pipe installed inside the mounting bracket.

[0006] In a further embodiment, an air inlet is provided on one side of the outer wall of the housing, and an air inlet pipe extending into the gas distributor is installed in the air inlet.

[0007] In a further embodiment, the top of the air outlet pipe is provided with an installation hole, and a humidity sensor is installed in the installation hole. Solenoid valves are installed on both the air outlet pipe and the circulation pipe.

[0008] In a further embodiment, the surface of the sealing cover is provided with a plurality of flow guide holes, and a diversion pipe connected to the water supply pipe is installed in the flow guide holes.

[0009] In a further embodiment, a flow control valve is installed on the water supply pipe.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] This humidifier for producing formic acid by carbon dioxide electrolysis uses multiple humidification plates with through holes. Carbon dioxide gas flows inside the shell and passes through the through holes one by one to make full contact with the humidification plates, achieving uniform humidification and effectively avoiding the problem of unstable electrolysis reaction caused by uneven humidification.

[0012] By using a flow regulating valve on the water supply pipeline in conjunction with a humidity sensor, the humidity of carbon dioxide gas can be precisely adjusted according to actual needs, thus broadening the humidity adjustment range and meeting the requirements of carbon dioxide electrolysis for formic acid production under different working conditions.

[0013] The circulating pipe allows carbon dioxide gas to be re-transported into the outer casing for humidification when the humidity is insufficient, promoting the smooth progress of subsequent electrolysis reactions and improving the yield and quality of formic acid. This humidifier for producing formic acid by carbon dioxide electrolysis can achieve uniform humidification of carbon dioxide gas, broaden the humidity adjustment range, simplify the structure, reduce operating costs, and improve the efficiency and quality of formic acid production by carbon dioxide electrolysis. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model without the protective cover.

[0017] Figure 3 This is a schematic diagram of the partition of this utility model.

[0018] In the diagram: 1. Outer shell; 2. Sealing cover; 3. Partition plate; 4. Air inlet pipe; 5. Gas distributor; 6. Limiting frame; 7. Humidifying plate; 8. Air outlet pipe; 9. Humidity sensor; 10. Circulation pipe; 11. Mounting bracket; 12. Water supply pipe; 13. Diverter pipe. Detailed Implementation

[0019] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0020] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0021] This utility model provides, for example Figure 1-3 The humidifier shown includes a housing 1 and a sealing cover 2 installed on the surface of the housing 1. The sealing cover 2 is fixed to the surface of the housing 1 by bolts, which is convenient for disassembly and assembly, and facilitates the disassembly and maintenance of the components inside the housing 1. A partition 3 is fixed inside the housing 1 by screws, and a gas distributor 5 is installed on one side of the outer wall of the partition 3. An air inlet is opened on one side of the outer wall of the housing 1, and an air inlet pipe 4 extending into the gas distributor 5 is installed in the air inlet. The gas distributor 5 is a porous plate structure, which can evenly disperse the carbon dioxide gas entering the housing 1 and avoid the gas from entering in a concentrated manner, resulting in uneven humidification.

[0022] Multiple limiting brackets 6 are installed on both inner walls of the outer shell 1 by screws. A humidifying plate 7 is inserted between two limiting brackets 6. The humidifying plate 7 is movably connected to the limiting bracket 6, which not only restricts the position of the humidifying plate 7, but also facilitates the disassembly and assembly of the humidifying plate 7. Multiple through holes are evenly distributed on each humidifying plate 7, and a gas flow channel is formed between adjacent humidifying plates 7. The humidifying plate 7 is made of porous water-absorbing material, such as hydrophilic ceramic material, which has a rich microporous structure inside and can absorb a large amount of water. By setting multiple humidifying plates 7 with through holes, carbon dioxide gas flows in the outer shell 1 and passes through the through holes one by one through the humidifying plate 7, making full contact with the humidifying plate 7, realizing uniform humidification and effectively avoiding the problem of unstable electrolytic reaction caused by uneven humidification.

[0023] An air outlet is provided on one side of the outer wall of the outer casing 1, and an air outlet pipe 8 is fixed inside the air outlet. A circulation pipe 10 is installed between the air outlet pipe 8 and the outer casing 1. An installation hole is provided on the top of the air outlet pipe 8, and a humidity sensor 9 is installed inside the installation hole to detect the humidity of the carbon dioxide gas after humidification in real time. Solenoid valves are installed on both the air outlet pipe 8 and the circulation pipe 10. When the humidity of the carbon dioxide gas is not up to standard, it can be re-transported into the outer casing 1 through the circulation pipe 10 for humidification treatment, which can promote the smooth progress of the subsequent electrolysis reaction and improve the yield and quality of formic acid.

[0024] The surface of the sealing cover 2 is fixed with a mounting bracket 11 by screws, and a water supply pipe 12 is installed inside the mounting bracket 11. The surface of the sealing cover 2 has multiple guide holes, and a diversion pipe 13 connected to the water supply pipe 12 is installed in the guide holes. The position of the diversion pipe 13 corresponds to the position of the humidification plate 7. A flow control valve is installed on the water supply pipe 12, which can accurately control the water supply to the humidification plate 7 according to actual needs, thereby adjusting the humidification effect. By using the flow control valve on the water supply pipe in conjunction with the humidity sensor 9, the humidity of carbon dioxide gas can be accurately adjusted according to actual needs, thus widening the humidity adjustment range and meeting the requirements of carbon dioxide electrolysis for the production of formic acid under different working conditions.

[0025] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Working principle:

[0028] In this humidifier for producing formic acid by carbon dioxide electrolysis, the carbon dioxide gas to be humidified enters the outer shell 1 through the inlet pipe 4. After being evenly dispersed by the gas distributor 5, it flows within the outer shell 1. The water supply pipe 12 supplies water to the humidification plate 7 through the flow regulating valve. After the humidification plate 7 absorbs the moisture, it exchanges moisture with the flowing carbon dioxide gas, thereby humidifying the carbon dioxide gas. The humidified carbon dioxide gas is then discharged through the outlet pipe 8. During the discharge process, the humidity sensor 9 detects the gas humidity in real time. If the detected humidity value does not reach the set range, the opening of the flow regulating valve is adjusted to control the water supply. At the same time, the solenoid valve on the outlet pipe 8 is closed, and the solenoid valve on the circulation pipe 10 is opened, so that the gas is re-transported into the outer shell 1 until the humidity of the humidified carbon dioxide gas reaches the set requirement, and then it is discharged from the outer shell 1 through the outlet pipe 8.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A humidifier for producing formic acid by carbon dioxide electrolysis, comprising a housing (1) and a sealing cover (2) mounted on the surface of the housing (1), characterized in that: A partition (3) is fixed inside the outer shell (1), and a gas distributor (5) is installed on one side of the outer wall of the partition (3). Multiple limiting brackets (6) are installed on both sides of the inner wall of the outer shell (1). A humidifying plate (7) is inserted between two limiting brackets (6). Multiple through holes are evenly distributed on each humidifying plate (7). An air outlet is opened on one side of the outer wall of the outer shell (1), and an air outlet pipe (8) is fixed inside the air outlet. A circulation pipe (10) is installed between the air outlet pipe (8) and the outer shell (1). An mounting bracket (11) is fixed on the surface of the sealing cover (2), and a water supply pipe (12) is installed inside the mounting bracket (11).

2. A humidifier for producing formic acid by carbon dioxide electrolysis according to claim 1, characterized in that: An air inlet is provided on one side of the outer wall of the housing (1), and an air inlet pipe (4) extending into the gas distributor (5) is installed in the air inlet.

3. A humidifier for producing formic acid by carbon dioxide electrolysis according to claim 1, characterized in that: The top of the air outlet pipe (8) is provided with an installation hole, and a humidity sensor (9) is installed in the installation hole. Solenoid valves are installed on both the air outlet pipe (8) and the circulation pipe (10).

4. A humidifier for producing formic acid by carbon dioxide electrolysis according to claim 1, characterized in that: The surface of the sealing cover (2) is provided with multiple flow guide holes, and a diversion pipe (13) connected to the water supply pipe (12) is installed in the flow guide holes.

5. A humidifier for producing formic acid by carbon dioxide electrolysis according to claim 1, characterized in that: A flow control valve is installed on the water supply pipe (12).

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