Self-preheating type deaerator

Abstract

The utility model relates to the technical field of hydrogen production equipment, in particular to a self-preheating type deaerator which comprises a tank body, a heating pipe coaxial with the tank body is arranged in the tank body, a gas inlet and outlet device is arranged at the top of the tank body, and a blow-off pipe is arranged at the bottom of the tank body. A first filter plate and a second filter plate are arranged in the tank body side by side up and down, the heating pipe penetrates through the first filter plate and the second filter plate, the air inlet and outlet device is communicated with the heating pipe, a cleaning device is arranged at the bottom of the heating pipe, and the cleaning device can abut against the bottom of the second filter plate. When fan blades drive a cleaning rod to rotate, bristles on the cleaning rod can clean dust particles, mechanical impurities and the like attached to the bottom of a second filter plate, it is ensured that filter holes in the bottom of the second filter plate are kept smooth, hydrogen conveniently moves upwards through the second filter plate to react with a deoxidation catalyst, and the working efficiency of the device is ensured; and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen production equipment, specifically a self-preheating deoxygenator. Background Technology

[0002] In existing hydrogen production equipment, the hydrogen produced during the preparation process mostly contains a certain amount of impurities (including oxygen, dust particles, and mechanical impurities). Therefore, after the hydrogen is produced, it needs to pass through a deoxygenation device to remove impurities, so as to output relatively pure hydrogen and ensure the normal production and operation of the hydrogen production equipment.

[0003] Most existing deoxygenation devices involve filling a large-capacity container with a deoxygenation catalyst and heating the container. Hydrogen gas mixed with impurities is then introduced into the container so that the oxygen impurities and the deoxygenation catalyst react at a high temperature to achieve deoxygenation. To prevent hydrogen gas containing dust particles and mechanical impurities from directly contacting and reacting with the deoxygenation catalyst, thereby reducing the catalyst's activity and reaction efficiency, a filter plate is required to filter out the dust particles and mechanical impurities.

[0004] However, dust particles and mechanical impurities will adhere to the filter plate after being filtered, and the filter plate needs to be cleaned at regular intervals to prevent hydrogen from failing to react properly with the deoxygenation catalyst. Frequent cleaning of the filter plate not only affects the efficiency of hydrogen production, but also increases the workload and intensity of the operators. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a self-preheating deaerator. The hydrogen gas introduced into the heating tube can drive the fan blade to rotate. Since a cleaning rod is provided at the outer edge of the fan blade, and bristles that can contact the bottom of the second filter plate are provided above the cleaning rod, the bristles on the cleaning rod can clean the dust particles and mechanical impurities attached to the bottom of the second filter plate when the fan blade drives the cleaning rod to rotate.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A self-preheating deaerator includes a tank body, a heating tube coaxial with the tank body inside the tank body, an air inlet / outlet device at the top of the tank body, a drain pipe at the bottom of the tank body, a first filter plate and a second filter plate arranged side by side inside the tank body, the heating tube passing through the first filter plate and the second filter plate, the air inlet / outlet device being connected to the heating tube, and a cleaning device at the bottom of the heating tube, the cleaning device being able to abut against the bottom of the second filter plate.

[0008] Preferably, the cleaning device includes a mounting frame, the bottom of the heating tube has an opening, a fan blade is mounted at the bottom opening of the heating tube via the mounting frame, a cleaning rod is mounted at the outer edge of the fan blade, and the cleaning rod is provided with an array of bristles that can abut against the second filter plate.

[0009] Preferably, the air inlet / outlet device includes an air guide pipe, the bottom of which is connected to the tank body, an air inlet is installed at the upper end of the air guide pipe, a baffle is provided in the middle of the air guide pipe, the baffle is connected to the heating pipe through multiple heat exchange pipes, and an air outlet is provided on the side wall at the lower end of the air guide pipe.

[0010] Preferably, the tank sidewall is provided with a feed inlet and a discharge outlet from top to bottom, the feed inlet and the discharge outlet are located on the tank sidewall between the first filter plate and the second filter plate, and the feed inlet is located above the discharge outlet.

[0011] Preferably, the fan blades are detachably mounted on the bottom of the mounting bracket.

[0012] Preferably, an electric heating wire is embedded in the wall of the heating tube.

[0013] Preferably, temperature sensors are provided at the bottom and top of the inner side of the tank, and the two temperature sensors are respectively located on the opposite side of the first filter plate and the second filter plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model has a simple structure. As hydrogen flows through the heating pipe to the bottom of the tank, it drives the fan blades to rotate. Since a cleaning rod is provided on the outer edge of the fan blades, and bristles are provided on the top of the cleaning rods that can contact the bottom of the second filter plate, when the fan blades drive the cleaning rods to rotate, the bristles on the cleaning rods can clean the dust particles and mechanical impurities attached to the bottom of the second filter plate, ensuring that the filter holes at the bottom of the second filter plate remain unobstructed. This facilitates the upward movement of hydrogen through the second filter plate to react with the deoxygenation catalyst, ensuring the efficiency of the device, preventing the filter holes on the second filter plate from becoming clogged, reducing the frequency of cleaning the second filter plate by the operator, and reducing the labor intensity of the operator.

[0016] 2. In this device, the hydrogen gas requiring deoxygenation enters the heating tubes after passing through the inlet and multiple heat exchange tubes. The baffle prevents the hydrogen gas from directly entering the top of the tank, ensuring that the hydrogen gas reacts with the deoxygenation catalyst. Since the reaction between the hydrogen gas and the deoxygenation catalyst generates heat, this heat rises to the top of the tank and preheats the multiple heat exchange tubes. This avoids using only the heating tubes to heat the hydrogen gas, ensuring that the heat generated during hydrogen deoxygenation is effectively utilized, while reducing the workload of the heating tubes, thus achieving cost reduction and efficiency improvement. After passing through the heat exchange tubes, the hydrogen gas can be discharged through the outlet on the gas guide pipe. The baffle prevents the deoxygenated hydrogen gas from contacting the undeoxygenated hydrogen gas.

[0017] 3. When a large amount of impurities accumulate at the bottom of the tank, the impurities can be discharged from the bottom of the tank through the drain pipe. At the same time, the fan blades can be removed from the mounting frame, which facilitates the cleaning and maintenance of the fan blades, cleaning rods and bristles, ensuring the service life and cleaning efficiency of the device.

[0018] 4. The temperature sensor mounted on the bottom of the second filter plate and the temperature sensor mounted on the top of the first filter plate can both collect the current temperature information, which makes it easy for the operator to control the heating temperature of the heating tube and the temperature of the hydrogen entering the heating tube. This ensures that the temperature of the heated hydrogen increases, the molecular motion speed increases, and the contact and reaction with the catalyst are more complete, thereby increasing the rate of deoxygenation reaction. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of the local structure of A in the middle;

[0023] Figure 5 for Figure 3 Enlarged view of the local structure of B in the diagram.

[0024] In the diagram: 1. Tank body; 2. Heating tube; 3. First filter plate; 4. Second filter plate; 5. Air inlet; 6. Air outlet; 7. Feed inlet; 8. Discharge port; 9. Drain pipe; 10. Heat exchange tube; 11. Air guide pipe; 12. Mounting bracket; 13. Fan blade; 14. Cleaning rod; 15. Brush bristles. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] A self-preheating deaerator, with the following structure: Figures 1-5 As shown, the device includes a tank 1, inside which a heating pipe 2 is coaxial with the tank 1. An air inlet / outlet device is provided at the top of the tank 1, and a drain pipe 9 is provided at the bottom of the tank 1. Inside the tank 1, a first filter plate 3 and a second filter plate 4 are arranged side by side, one above the other. The heating pipe 2 passes through the first filter plate 3 and the second filter plate 4. The air inlet / outlet device is connected to the heating pipe 2. A cleaning device is provided at the bottom of the heating pipe 2, and the cleaning device can abut against the bottom of the second filter plate 4.

[0028] Hydrogen gas containing impurities is introduced into heating pipe 2 through an inlet / outlet device. Due to the continuous flow of hydrogen, it moves downwards along heating pipe 2 into tank 1. This continuous flow of hydrogen drives a cleaning device. Hydrogen entering the bottom of tank 1 moves upwards through the second filter plate 4, reacting with the deoxygenation catalyst filled between the first filter plate 3 and the second filter plate 4. Because the temperature of the heated hydrogen increases, its molecular speed accelerates, resulting in more complete contact and reaction with the deoxygenation catalyst, thus increasing the deoxygenation reaction rate. The deoxygenated and impurity-removed hydrogen then passes through the first filter plate 3 into the top of tank 1 and exits through the inlet / outlet. The exhaust device discharges the gas to subsequent equipment. The first filter plate 3 can filter out dust particles and mechanical impurities in the hydrogen, preventing them from reducing the activity and reaction efficiency of the deoxygenation catalyst and ensuring the deoxygenation efficiency of the device. At the same time, the cleaning device at the bottom of the heating tube 2 can be driven by hydrogen as hydrogen is continuously supplied to the tank 1. It can clean the dust particles and mechanical impurities attached to the bottom of the second filter plate 4, preventing them from clogging the filter holes on the second filter plate 4, further improving the deoxygenation efficiency of the device. It can also avoid the operator from frequently cleaning the bottom of the second filter plate 4, reducing the labor intensity of the operator.

[0029] The cleaning device includes a mounting frame 12. The bottom of the heating tube 2 has an opening. A fan blade 13 is mounted on the bottom opening of the heating tube 2 via the mounting frame 12. A cleaning rod 14 is mounted on the outer edge of the fan blade 13. The cleaning rod 14 is provided with an array of bristles 15 that can abut against the second filter plate 4.

[0030] As hydrogen flows through heating pipe 2 to the bottom of tank 1, it drives fan blade 13 to rotate. Since a cleaning rod 14 is located on the outer edge of fan blade 13, and brush bristles 15 are positioned above the cleaning rod 14 to contact the bottom of the second filter plate 4, the brush bristles 15 on the cleaning rod 14 can clean dust particles and mechanical impurities adhering to the bottom of the second filter plate 4 when the fan blade 13 drives the cleaning rod 14 to rotate. This ensures that the filter holes at the bottom of the second filter plate 4 remain unobstructed, facilitating the upward movement of hydrogen through the second filter plate 4 to react with the deoxygenation catalyst. This ensures the efficiency of the device, prevents clogging of the filter holes on the second filter plate 4, reduces the frequency of cleaning the second filter plate 4 by operators, and lowers the labor intensity of operators.

[0031] The air inlet and outlet device includes an air guide pipe 11, the bottom of which is connected to the tank body 1. An air inlet 5 is installed at the upper end of the air guide pipe 11. A baffle is provided in the middle of the air guide pipe 11. The baffle is connected to the heating pipe 2 through multiple heat exchange pipes 10. An air outlet 6 is provided on the side wall at the lower end of the air guide pipe 11.

[0032] Hydrogen gas requiring deoxygenation enters the heating tube 2 through the inlet 5 and multiple heat exchange tubes 10. The baffle prevents hydrogen gas from directly entering the top of the tank 1, ensuring that the hydrogen gas reacts with the deoxygenation catalyst. Since the reaction between hydrogen gas and the deoxygenation catalyst generates heat, the heat generated can rise to the top of the tank 1 and preheat the multiple heat exchange tubes 10, avoiding the need to use only the heating tube 2 to heat the hydrogen gas. This ensures that the heat generated during hydrogen deoxygenation is effectively utilized, while reducing the workload of the heating tube 2, thus achieving cost reduction and efficiency improvement. After passing through the heat exchange tubes 10, the hydrogen gas can be discharged through the outlet 6 on the gas guide pipe 11. The baffle prevents the deoxygenated hydrogen gas from contacting the undeoxygenated hydrogen gas.

[0033] The tank body 1 has a feed inlet 7 and a discharge outlet 8 arranged sequentially from top to bottom on its side wall. The feed inlet 7 and the discharge outlet 8 are located on the side wall of the tank body 1 between the first filter plate 3 and the second filter plate 4. The feed inlet 7 is located above the discharge outlet 8.

[0034] The deoxidation catalyst can be filled into the tank 1 between the first filter plate 3 and the second filter plate 4 through the feed port 7, and the deoxidation catalyst can be discharged from the tank 1 through the discharge port 8 after the work is completed.

[0035] The fan blade 13 is detachably mounted on the bottom of the mounting bracket 12.

[0036] When a large amount of impurities accumulate at the bottom of the tank 1, the impurities can be discharged from the bottom of the tank 1 through the drain pipe 9. At the same time, the fan blade 13 can be removed from the mounting frame 12, which facilitates the cleaning and maintenance of the fan blade 13, cleaning rod 14 and brush bristles 15, ensuring the service life and cleaning efficiency of this device.

[0037] The heating tube 2 has an electric heating wire embedded in its tube wall.

[0038] The heating tube 2 has an embedded electric heating wire that can heat the hydrogen entering the heating tube 2, increase the temperature of the hydrogen that needs to be deoxygenated, and facilitate the increase in temperature of the heated hydrogen, which accelerates the molecular motion speed and makes the contact and reaction with the catalyst more complete, thereby increasing the rate of deoxygenation reaction.

[0039] Example 2

[0040] Based on Embodiment 1, temperature sensors are respectively provided at the bottom and top of the inner side of the tank 1, and the two temperature sensors are respectively located on the opposite side of the first filter plate 3 and the second filter plate 4.

[0041] The temperature sensor mounted on the bottom of the second filter plate 4 on the tank 1 and the temperature sensor mounted on the top of the first filter plate 3 on the tank 1 can both collect the current temperature information, which makes it easier for the operator to control the heating temperature of the heating tube 2 and the temperature of the hydrogen entering the heating tube 2. This ensures that the temperature of the heated hydrogen increases, the molecular motion speed increases, and the contact and reaction with the catalyst are more complete, thereby increasing the rate of deoxygenation reaction.

[0042] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations, additions, subtractions, or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A self-preheating deaerator, comprising a tank (1), characterized in that, The tank (1) is equipped with a heating pipe (2) coaxial with the tank (1). The top of the tank (1) is equipped with an air inlet / outlet device. The bottom of the tank (1) is equipped with a drain pipe (9). The tank (1) is equipped with a first filter plate (3) and a second filter plate (4) arranged side by side. The heating pipe (2) passes through the first filter plate (3) and the second filter plate (4). The air inlet / outlet device is connected to the heating pipe (2). The bottom of the heating pipe (2) is equipped with a cleaning device that can abut against the bottom of the second filter plate (4).

2. The self-preheating deaerator according to claim 1, characterized in that, The cleaning device includes a mounting bracket (12), the bottom of the heating tube (2) has an opening, a fan blade (13) is mounted on the bottom opening of the heating tube (2) via the mounting bracket (12), a cleaning rod (14) is mounted on the outer edge of the fan blade (13), and the cleaning rod (14) is provided with an array of bristles (15) that can abut against the second filter plate (4).

3. The self-preheating deaerator according to claim 1, characterized in that, The air inlet and outlet device includes an air guide pipe (11), the bottom of which is connected to the tank body (1), an air inlet (5) is installed at the upper end of the air guide pipe (11), a baffle is provided in the middle of the air guide pipe (11), and the baffle is connected to the heating pipe (2) through multiple heat exchange pipes (10). An air outlet (6) is provided on the side wall at the lower end of the air guide pipe (11).

4. A self-preheating deaerator according to claim 1, characterized in that, The tank body (1) has a feed inlet (7) and a discharge outlet (8) arranged sequentially from top to bottom on the side wall. The feed inlet (7) and the discharge outlet (8) are located on the side wall of the tank body (1) between the first filter plate (3) and the second filter plate (4). The feed inlet (7) is located above the discharge outlet (8).

5. A self-preheating deaerator according to claim 2, characterized in that, The fan blade (13) is detachably mounted on the bottom of the mounting bracket (12).

6. A self-preheating deaerator according to claim 1, characterized in that, The heating tube (2) has an electric heating wire embedded in its tube wall.

7. A self-preheating deaerator according to claim 1, characterized in that, Temperature sensors are respectively installed at the bottom and top of the inner side of the tank (1), and the two temperature sensors are respectively installed on the opposite side of the first filter plate (3) and the second filter plate (4).

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