Deoxidation, cooling and gas-liquid separation comprehensive tower for water electrolysis hydrogen production device

Abstract

A deoxidation, cooling and gas-liquid separation comprehensive tower for a water electrolysis hydrogen production device comprises an upper sealing head, a liquid level meter upper connector, a liquid level meter lower connector and a condensate outlet, a filler section is installed at the bottom end of the upper sealing head through a barrel flange, a cooling section is installed at the bottom end of the filler section through a barrel flange, and the condensate outlet is connected with the cooling section. The bottom end of the cooling section is provided with the gas-liquid separation section through a barrel flange, the top of the inner side of the gas-liquid separation section is provided with the flow baffle, the middle of the inner side of the gas-liquid separation section is provided with the water mist trapping net, the bottom end of the gas-liquid separation section is provided with the lower sealing head through a barrel flange, and the middle of the inner side of the packing section is provided with the packing area. The design is ingenious, and space is saved for the skid-mounted device of the water electrolysis hydrogen production system; the number of piping in the system is reduced, the safety is improved, and the manufacturing cost is reduced; each section of the comprehensive tower is detachable and convenient to maintain; the size of each section of the comprehensive tower can be autonomously designed according to hydrogen yield and water content.

Description

Technical Field

[0001] The utility model relates to a comprehensive tower, in particular to a deoxidation, cooling and gas-liquid separation comprehensive tower for an electrolytic water hydrogen production device. Background Technique

[0002] When an electrolytic cell is energized with direct current, hydrogen is evolved in the cathode chamber of the electrolytic cell, and oxygen is evolved in the anode chamber. The cathode chamber and the anode chamber are separated by a diaphragm. Since the diaphragm is a physical partition and cannot completely block the mutual diffusion of hydrogen and oxygen on both sides, the hydrogen generated by the electrolytic cell will inevitably contain a small amount of oxygen. In order to obtain purer hydrogen, a deoxidation tower is generally installed in the hydrogen production system. There is a filler with palladium catalyst in the deoxidation tower, so that a small amount of oxygen reacts with hydrogen to form water. Generally, there is a hydrogen cooler after the deoxidation tower to reduce the temperature of hydrogen so that the water vapor in hydrogen and the water or water vapor generated in the deoxidation tower are condensed into liquid water, so as to reduce the water content of hydrogen and improve the use efficiency of the subsequent purification system. Generally, there is a gas-liquid separation tank after the cooler to effectively separate the condensed liquid water and gaseous hydrogen in the cooler under the action of gravity. For the convenience of transportation, the electrolytic water hydrogen production system is generally made in a skid-mounted mode. In the skid-mounted mode, the installation of each device and pipeline is as compact as possible to reduce the volume of the module and the manufacturing and transportation costs. In the process of pursuing compactness and reducing volume, it also causes problems such as increased difficulty in equipment piping and inconvenient inspection and maintenance. Content of the Utility Model

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a deoxidation, cooling and gas-liquid separation comprehensive tower for an electrolytic water hydrogen production device, which effectively solves the problems mentioned in the above background technique.

[0004] To achieve the above object, the utility model provides the following technical solutions: The utility model includes an upper head, a cylinder flange, a packing section, a cooling section, a baffle, a water mist trap, a gas-liquid separation section, a lower head, a packing area, a packing tray, a downcomer, a hydrogen inlet, a packing filling port, a packing discharging port, a cooling water outlet, a cooling water inlet, a hydrogen outlet, a liquid level gauge upper interface, a liquid level gauge lower interface and a condensate outlet. The bottom end of the upper head is installed with a packing section through a cylinder flange. The bottom end of the packing section is installed with a cooling section through a cylinder flange. The bottom end of the cooling section is installed with a gas-liquid separation section through a cylinder flange. A baffle is installed at the top inside the gas-liquid separation section. A water mist trap is installed in the middle inside the gas-liquid separation section. The bottom end of the gas-liquid separation section is installed with a lower head through a cylinder flange. A packing area is arranged in the middle inside the packing section. A packing tray is arranged at the bottom of the packing area. A downcomer is installed on the baffle of the gas-liquid separation section. A cooling water outlet is arranged on one side of the top of the cooling section. A cooling water inlet is arranged on one side of the bottom of the cooling section.

[0005] Preferably, a packing discharge port is arranged on one side of the packing area.

[0006] Preferably, a hydrogen inlet is arranged in the middle of the top end of the upper head, and a packing filling port is arranged on one side of the top end of the upper head.

[0007] Preferably, a hydrogen outlet is arranged on one side at the bottom of the baffle plate in the gas-liquid separation section.

[0008] Preferably, a condensate outlet is arranged in the middle of the bottom end of the lower head.

[0009] Preferably, a liquid level gauge upper interface is arranged on the other side at the bottom of the baffle plate in the gas-liquid separation section, and a liquid level gauge lower interface is arranged in the middle of one side of the lower head.

[0010] Beneficial effects: The structure of the utility model is novel and ingeniously conceived, saving space for the skid-mounted device of the electrolytic water hydrogen production system; reducing the number of pipes in the system, improving safety, and reducing manufacturing costs; each section of the integrated tower is detachable, facilitating maintenance; the sizes of each section of the integrated tower can be independently designed according to the hydrogen production and water content; the medium flow direction of the deoxidation tower is from top to bottom. Compared with the traditional deoxidation tower in the hydrogen production system, it can avoid the blockage of pipelines by liquid water, resulting in pressure fluctuations in the hydrogen system; there is no need for electric heating equipment, reducing potential safety hazards and manufacturing costs. Description of the Drawings

[0011] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0012] Figure 1 is the overall structural schematic diagram of the utility model;

[0013] Reference numerals in the drawings: 1, upper head; 2, cylinder flange; 3, packing section; 4, cooling section; 5, baffle plate; 6, water mist trapping net; 7, gas-liquid separation section; 8, lower head; 9, packing area; 10, packing tower plate; 11, downcomer; 12, hydrogen inlet; 13, packing filling port; 14, packing discharge port; 15, cooling water outlet; 16, cooling water inlet; 17, hydrogen outlet; 18, liquid level gauge upper interface; 19, liquid level gauge lower interface; 20, condensate outlet. Detailed Description of the Preferred Embodiment

[0014] The following further Figure 1 describes in detail the specific embodiments of the utility model.

[0015] Example 1, consisting of Figure 1Provided hereby, the present utility model provides a comprehensive tower for deoxidation, cooling, and gas-liquid separation in an electrolytic water hydrogen production device, which includes an upper head 1, a cylinder flange 2, a packing section 3, a cooling section 4, a baffle plate 5, a water mist capture net 6, a gas-liquid separation section 7, a lower head 8, a packing area 9, a packing tower plate 10, a downcomer 11, a hydrogen inlet 12, a packing filling port 13, a packing discharging port 14, a cooling water outlet 15, a cooling water inlet 16, a hydrogen outlet 17, an upper interface of a liquid level gauge 18, a lower interface of a liquid level gauge 19, and a condensate outlet 20. The bottom end of the upper head 1 is installed with the packing section 3 through the cylinder flange 2. The bottom end of the packing section 3 is installed with the cooling section 4 through the cylinder flange 2. The bottom end of the cooling section 4 is installed with the gas-liquid separation section 7 through the cylinder flange 2. A baffle plate 5 is installed at the top inside the gas-liquid separation section 7. A water mist capture net 6 is installed in the middle inside the gas-liquid separation section 7. The bottom end of the gas-liquid separation section 7 is installed with the lower head 8 through the cylinder flange 2. A packing area 9 is arranged in the middle inside the packing section 3. A packing tower plate 10 is arranged at the bottom of the packing area 9. A downcomer 11 is installed on the baffle plate 5 of the gas-liquid separation section 7. A cooling water outlet 15 is arranged on one side of the top of the cooling section 4. A cooling water inlet 16 is arranged on one side of the bottom of the cooling section 4.

[0016] A packing discharging port 14 is arranged on one side of the packing area 9, which is convenient for discharging.

[0017] In the middle of the top end of the upper head 1, a hydrogen inlet 12 is arranged. On one side of the top end of the upper head 1, a packing filling port 13 is arranged, which is convenient for adding packing and hydrogen.

[0018] On one side of the bottom of the baffle plate 5 in the gas-liquid separation section 7, a hydrogen outlet 17 is arranged, which is convenient for discharging hydrogen.

[0019] In the middle of the bottom end of the lower head 8, a condensate outlet 20 is arranged, which is convenient for discharging condensate.

[0020] On the other side of the bottom of the baffle plate 5 in the gas-liquid separation section 7, an upper interface of a liquid level gauge 18 is arranged. In the middle of one side of the lower head 8, a lower interface of a liquid level gauge 19 is arranged, which is convenient for connecting and using in cooperation.

[0021] Working principle: When the present utility model is in use, both the upper head 1 and the lower head 8 are welded flanges to facilitate connection with the middle cylinder. A short section with a flange for the hydrogen inlet 12 is welded by opening a hole directly above the upper head 1 to connect the hydrogen transmission pipeline. A short section with a flange is welded by opening a hole obliquely upward on one side of the center of the upper head 1 for the packing filling port 13 to load the packing; a hole is opened directly below the lower head 8, and a short section with a flange for the condensate outlet 20 is welded. After installing a valve, it is used to timely remove the separated liquid water. The sizes of the flanges and pipelines are designed according to the hydrogen flow rate and should comply with relevant standards.

[0022] Among them, the packing section 3 is a stainless steel cylinder with upper and lower flanges. Inside, a stainless steel packing tower plate 10 with round holes is welded at the bottom. Above the stainless steel packing tower plate 10, palladium catalyst packing is filled (the quantity of the packing can be calculated according to the hydrogen production). There are openings above the stainless steel packing tower plate 10 of the packing section 3, and a pipe section packing discharge port 14 with a flange is welded to take out the packing. The length of the cylinder of the packing section 3 can be calculated according to the volume of the palladium catalyst used.

[0023] The cooling section 4 consists of upper and lower tube sheets, upper and lower flanges, straight tube rows, upper and lower tube sheets, and flange short joints symmetrically installed on both sides above and below the cylinder. Among them, the flange short joints are used to connect the cooling water pipes. The length and quantity of the tube rows can be calculated according to the hydrogen production and the temperature to be cooled, and the size of the cooling water pipes is calculated according to the cooling capacity required by the hydrogen.

[0024] Among them, the gas-liquid separation section is a stainless steel cylinder with upper and lower flanges. A baffle plate with a pipe (downcomer) is welded at the upper part of the cylinder, so that the gaseous hydrogen and the liquid-phase water can only enter the gas-liquid separation section through the pipe, and the pipe extends to the middle of the cylinder. A stainless steel support plate with round holes is welded below the baffle plate, and 3 - 5 layers of stainless steel woven wire mesh (water mist capture net) are placed above the support plate to capture the water droplets in the hydrogen after separation. There are openings between the water mist capture net and the baffle plate, and a short joint with a flange is welded to connect the hydrogen transmission pipe. Short joints with flanges are welded to the openings of the upper part and the straight plate of the lower head of the gas-liquid separation section respectively. These two short joints are on a vertical line and are used to install a liquid level gauge to monitor the liquid level in the gas-liquid separation section to ensure that the liquid level does not exceed the bottom of the downcomer welded on the baffle plate. The length of the gas-liquid separation section is calculated according to the hydrogen production to ensure that the gas phase and the liquid phase can be fully separated. The size of the hydrogen outlet is designed according to the hydrogen flow rate and should meet the relevant standards.

[0025] The process of the material in this comprehensive tower is as follows: Hydrogen with trace amounts of oxygen and water vapor enters the packing section through the upper inlet of the upper flange of the comprehensive tower. After removing the trace amounts of oxygen in the hydrogen under the catalytic action of the catalyst in the packing section, it enters the cooling section. In the cooling section, the water vapor in the hydrogen is condensed into liquid water by reducing the temperature of the hydrogen. The hydrogen and the liquid water enter the separation section, and after being blocked by the baffle plate, they enter the separation chamber through the downcomer. In the separation chamber, the gas phase and the liquid phase are fully separated under the action of gravity. The separated hydrogen further removes water mist through the capture net and is then transported to the next process through the hydrogen outlet. The separated liquid water accumulates at the bottom of the separation section. When the liquid level reaches a certain value (generally not allowed to exceed the lowest point of the downcomer), it is discharged through the valve at the bottom of the head.

[0026] Beneficial effects: The structure of the utility model is novel and ingeniously conceived, saving space for the skid-mounted device of the electrolytic water hydrogen production system; reducing the number of pipelines in the system, improving safety, and reducing manufacturing costs; each section of the integrated tower is detachable, facilitating maintenance; the dimensions of each section of the integrated tower can be independently designed according to the hydrogen production and water content; the medium flow direction of the deoxygenation tower is from top to bottom. Compared with the traditional deoxygenation tower in the hydrogen production system, it can avoid the blockage of pipelines caused by the generation of liquid water and the pressure fluctuation of the hydrogen system; there is no need to allocate electric heating equipment, reducing potential safety hazards and manufacturing costs.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A comprehensive tower for deoxidation, cooling, and gas-liquid separation in an electrolytic water hydrogen production device, comprising an upper head (1), a shell flange (2), a packing section (3), a cooling section (4), a baffle (5), a water mist capture net (6), a gas-liquid separation section (7), a lower head (8), a packing area (9), a packing tray (10), a downcomer (11), a hydrogen inlet (12), a packing filling port (13), a packing discharging port (14), a cooling water outlet (15), a cooling water inlet (16), a hydrogen outlet (17), an upper interface of a liquid level gauge (18), a lower interface of a liquid level gauge (19), and a condensate outlet (20), characterized in that: The bottom end of the upper head (1) is installed with a packing section (3) through a shell flange (2). The bottom end of the packing section (3) is installed with a cooling section (4) through the shell flange (2). The bottom end of the cooling section (4) is installed with a gas-liquid separation section (7) through the shell flange (2). A baffle plate (5) is installed at the top inside the gas-liquid separation section (7). A water mist capture net (6) is installed in the middle inside the gas-liquid separation section (7). The bottom end of the gas-liquid separation section (7) is installed with a lower head (8) through the shell flange (2). A packing area (9) is provided in the middle inside the packing section (3). A packing tray (10) is provided at the bottom of the packing area (9). A downcomer (11) is installed on the baffle plate (5) of the gas-liquid separation section (7). A cooling water outlet (15) is provided on one side at the top of the cooling section (4). A cooling water inlet (16) is provided on one side at the bottom of the cooling section (4).

2. The integrated tower for deoxidation, cooling, and gas-liquid separation of an electrolytic water hydrogen production device according to claim 1, wherein: A packing discharge port (14) is provided on one side of the packing area (9).

3. The integrated tower for deoxidation, cooling and gas-liquid separation of an electrolytic water hydrogen production device according to claim 1, characterized in that: A hydrogen inlet (12) is provided in the middle at the top end of the upper head (1). A packing filling port (13) is provided on one side at the top end of the upper head (1).

4. The integrated tower for deoxidation, cooling and gas-liquid separation of an electrolytic water hydrogen production device according to claim 1, characterized in that: A hydrogen outlet (17) is provided on one side at the bottom of the baffle plate (5) in the gas-liquid separation section (7).

5. The integrated tower for deoxidation, cooling, and gas-liquid separation of an electrolytic water hydrogen production device according to claim 1, characterized in that: A condensate outlet (20) is provided in the middle at the bottom end of the lower head (8).

6. The integrated tower for deoxidation, cooling and gas-liquid separation of an electrolytic water hydrogen production device according to claim 1, characterized in that: A liquid level gauge upper interface (18) is provided on the other side at the bottom of the baffle plate (5) in the gas-liquid separation section (7). A liquid level gauge lower interface (19) is provided in the middle on one side of the lower head (8).

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