Automatic hydrogenation nitrogen purification device

Abstract

The utility model discloses an automatic hydrogenation nitrogen purification device, which relates to the field of purification devices, and comprises a rack, the top of the rack is fixedly connected with two dryers, a filter, a heater, two coolers, a deaerator and an electric cabinet, the two dryers are fixedly connected to the top of the rack, the two coolers are fixedly connected to the top of the rack, and the filter is fixedly connected to the top of the rack. And the two coolers are fixedly connected to the top of the rack. According to the automatic hydrogenation nitrogen purification device disclosed by the utility model, ordinary nitrogen enters the deaerator filled with the palladium catalyst deoxidation adsorbent, and a large amount of water generated under the action of the palladium catalyst deoxidation adsorbent after oxygen and hydrogen in the ordinary nitrogen are mixed is discharged, so that the residual oxygen content in the nitrogen can be less than ppm, and in view of saving energy consumption, the nitrogen purification efficiency is greatly improved. The adopted palladium catalyst deoxidizing adsorbent can achieve the deoxidizing effect without electric heating, the device does not need operators, all waste gas and waste water are discharged in a centralized mode, and sanitation and cleanliness of a plant are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of purification devices, and in particular to an automatic hydrogen nitrogen purification device. Background Technology

[0002] Nitrogen purification refers to the removal of impurities from nitrogen using physical or chemical methods. Industrially, nitrogen purification mainly removes oxygen from nitrogen to improve its purity.

[0003] Existing nitrogen purification equipment requires a lot of energy and manual operation during purification, which is time-consuming and labor-intensive. In addition, the discharge of waste gas and wastewater also needs to be treated, which will aggravate the overall pollution of the plant.

[0004] Therefore, it is necessary to propose an automatic hydrogen nitrogen purification device to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide an automatic hydrogenation nitrogen purification device, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An automatic hydrogen nitrogen purification device includes a frame, on the top of which a dryer, a filter, a heater, a cooler, a deaerator, and an electrical control box are fixedly connected.

[0008] Preferably, there are two dryers, both of which are fixedly connected to the top of the frame; there are two coolers, both of which are fixedly connected to the top of the frame; the inner cavity of the deaerator is filled with palladium catalyst deoxygenation adsorbent; and the inner cavity of the dryer is equipped with a molecular sieve.

[0009] Preferably, silencers are symmetrically fixedly connected to the front and back of the heater, first steel pipes are symmetrically installed on the front and back of the two dryers on opposite sides, butterfly check valves are symmetrically connected to the outer flanges of the two first steel pipes, the two silencers are symmetrically installed on opposite sides of the two first steel pipes, thermocouple tubes are symmetrically installed on opposite sides of the two first steel pipes, a throttle valve is connected to the outer flange of the front first steel pipe, and a connecting pipe is fixedly connected to the bottom of the two dryers on opposite sides, and a second pneumatic valve is connected to the outer flange of the connecting pipe.

[0010] Preferably, the filter is connected to the first steel pipe on the back side via a second steel pipe, the inner cavities of the first and second steel pipes are in communication, a third steel pipe is fixedly connected to the left side of the second steel pipe, and the right side of the right cooler is fixedly connected to the left side of the third steel pipe and communicates with its inner cavity.

[0011] Preferably, a fourth steel pipe is fixedly connected to the left side of the cooler on the right side, and the left side of the fourth steel pipe is fixedly connected to the right side of the cooler on the left side and communicates with its inner cavity. A fifth steel pipe is fixedly connected to the top of the cooler, and the front of the fifth steel pipe is fixedly connected to the top of the deaerator and communicates with its inner cavity. A metal thermometer is installed in the inner cavity of the deaerator.

[0012] Preferably, a three-way pipe is installed on the right side of the deaerator, and a hydrogen flow meter and a nitrogen flow meter are installed on the outer wall of the three-way pipe. Two shut-off valves are symmetrically connected to the bottom flange of the outer wall of the three-way pipe. The bottom of the three-way pipe is fixedly connected to a fourth steel pipe, and the inner cavity of the three-way pipe is connected to the fourth steel pipe. A first pneumatic valve is connected to the back flange of the three-way pipe. Beneficial effects

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This automatic hydrogenated nitrogen purification device introduces ordinary nitrogen into a deoxygenator containing palladium catalyst deoxygenating adsorbent. The oxygen and hydrogen in the ordinary nitrogen mix and are then expelled by the palladium catalyst deoxygenating adsorbent, resulting in a large amount of water. This ensures that the residual oxygen content in the nitrogen is less than ppm. From the perspective of energy saving, the palladium catalyst deoxygenating adsorbent used can achieve the deoxygenation effect without electric heating.

[0015] This automatic hydrogenation nitrogen purification device adopts an automatic hydrogenation process, which can control the amount of hydrogen entering the plant according to demand. It can also automatically switch between two dryers. The working cycle of each dryer is designed to be 3-5 hours. All processes are automatically controlled by an electrical control box, requiring no operators. All exhaust gas and wastewater are centrally discharged, which is beneficial to the hygiene and cleanliness of the plant. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the present invention;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a top view of the present invention.

[0019] In the diagram: 1. Dryer; 2. Heater; 3. Filter; 4. Silencer; 5. Cooler; 6. First pneumatic valve; 7. Deaerator; 8. Frame; 9. Second pneumatic valve; 10. Throttling valve; 11. Butterfly check valve; 12. Thermocouple tube; 13. Nitrogen flow meter; 14. Hydrogen flow meter; 15. Metal thermometer; 16. Electrical control box. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1-3 As shown, an automatic hydrogen nitrogen purification device includes a frame 8. A dryer 1, a filter 3, a heater 2, a cooler 5, a deaerator 7, and an electrical control box 16 are fixedly connected to the top of the frame 8. There are two dryers 1, both fixedly connected to the top of the frame 8. There are also two coolers 5, both fixedly connected to the top of the frame 8. The deaerator 7 contains a palladium catalyst deoxygenating adsorbent. A molecular sieve is installed in the inner cavity of the dryer 1. Silencers 4 are symmetrically fixedly connected to the front and back of the heater 2. First steel pipes are symmetrically installed on the front and back of opposite sides of the two dryers 1. A butterfly check valve 11 is symmetrically connected to the outer flange of the two first steel pipes. The two silencers 4 are symmetrically installed on opposite sides of the two first steel pipes. Thermocouple tubes 12 are symmetrically installed on opposite sides of the two first steel pipes. A throttling valve 10 is connected to the outer flange of the front first steel pipe. A connecting pipe is fixedly connected to the bottom of the two dryers 1 on opposite sides. The outer flange of the filter 3 is connected to the second pneumatic valve 9. The filter 3 is connected to the first steel pipe on the back through the second steel pipe. The inner cavities of the first and second steel pipes are connected. The left side of the second steel pipe is fixedly connected to the third steel pipe. The left side of the third steel pipe is fixedly connected to the right side of the right cooler 5 and is connected to its inner cavity. The left side of the right cooler 5 is fixedly connected to the fourth steel pipe. The left side of the fourth steel pipe is fixedly connected to the right side of the left cooler 5 and is connected to its inner cavity. The top of the cooler 5 is fixedly connected to the fifth steel pipe. The front of the fifth steel pipe is fixedly connected to the top of the deaerator 7 and is connected to its inner cavity. A metal thermometer 15 is installed in the inner cavity of the deaerator 7. A three-way pipe is installed on the right side of the deaerator 7. A hydrogen flow meter 14 and a nitrogen flow meter 13 are installed on the outer wall of the three-way pipe. There are two shut-off valves connected to the symmetrical flanges at the bottom of the outer wall of the three-way pipe. The bottom of the three-way pipe is fixedly connected to the fourth steel pipe. The three-way pipe is connected to the inner cavity of the fourth steel pipe. The back flange of the three-way pipe is connected to the first pneumatic valve 6.

[0022] By introducing ordinary nitrogen gas into the deaerator 7 containing palladium catalyst deoxygenating adsorbent, the large amount of water generated by the mixing of oxygen and hydrogen in the ordinary nitrogen under the action of the palladium catalyst deoxygenating adsorbent is removed, so that the residual oxygen content in the nitrogen gas can be less than 3ppm. From the perspective of energy saving, the palladium catalyst deoxygenating adsorbent used can achieve the deoxygenation effect without electric heating. The automatic hydrogen addition process can control the hydrogen input according to demand, and the two dryers 1 can be automatically switched at the same time. The working cycle of each dryer 1 is designed to be 3-5 hours. All of them are automatically controlled by the electrical control box 16, without the need for operators. All exhaust gas and wastewater are vented and discharged centrally, which is conducive to the hygiene and cleanliness of the plant.

[0023] It should be noted that this utility model is an automatic hydrogen-nitrogen purification device. In use, a palladium catalyst deoxygenating adsorbent is introduced into the inner cavity of the deaerator 7, followed by ordinary nitrogen gas. The oxygen and hydrogen in the ordinary nitrogen gas mix, and under the action of the palladium catalyst, a large amount of water is generated, which is then removed, ensuring that the residual oxygen content in the nitrogen gas is less than 3 ppm, and the hydrogen content is controlled to be less than 1-2%. The reaction equation is 2H₂ + O₂ = 2H₂O. The heated and deoxygenated nitrogen gas then passes through a cooler 5. After passing through filter 3, the gas enters dryer 1. The inner cavity of dryer 1 is filled with molecular sieves, which deeply adsorb trace amounts of moisture and CO2 in the nitrogen gas, making the dew point reach above -60℃. This device adopts an automatic hydrogenation process, controlling the amount of hydrogen fed in based on the hydrogen content and the hydrogen content displayed by the hydrogen flow meter 14. At the same time, it realizes automatic switching between the two towers. The working cycle of each dryer 1 is designed to be 3-5 hours. The whole system requires no operators. All exhaust gas and wastewater are vented and discharged centrally, which is conducive to the hygiene and cleanliness of the plant.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic hydrogenation nitrogen purification device, comprising a frame (8), characterized in that: The top of the frame (8) is fixedly connected to a dryer (1), a filter (3), a heater (2), a cooler (5), a deaerator (7), and an electrical control box (16). Silencers (4) are symmetrically fixedly connected to the front and back of the heater (2). First steel pipes are symmetrically installed on the front and back of the two dryers (1) on opposite sides. Butterfly check valves (11) are symmetrically connected to the outer flanges of the two first steel pipes. The silencers (4) are symmetrically installed on opposite sides of the two first steel pipes. Thermocouple tubes (12) are symmetrically installed on opposite sides of the two first steel pipes. Throttling valves (10) are connected to the outer flange of the front first steel pipe. Connecting pipes are fixedly connected to the bottom of the two dryers (1) on opposite sides. Second pneumatic valves are connected to the outer flange of the connecting pipes. (9) A fourth steel pipe is fixedly connected to the left side of the cooler (5) on the right side. The left side of the fourth steel pipe is fixedly connected to the right side of the cooler (5) on the left side and communicates with its inner cavity. A fifth steel pipe is fixedly connected to the top of the cooler (5). The front of the fifth steel pipe is fixedly connected to the top of the deaerator (7) and communicates with its inner cavity. A metal thermometer (15) is installed in the inner cavity of the deaerator (7). A three-way pipe is installed on the right side of the deaerator (7). A hydrogen flow meter (14) and a nitrogen flow meter (13) are installed on the outer wall of the three-way pipe. A shut-off valve is connected to the bottom flange of the outer wall of the three-way pipe. There are two shut-off valves. The bottom of the three-way pipe is fixedly connected to the fourth steel pipe. The three-way pipe communicates with the inner cavity of the fourth steel pipe. A first pneumatic valve (6) is connected to the back flange of the three-way pipe.

2. The automatic hydrogenation nitrogen purification device according to claim 1, characterized in that: There are two dryers (1), both of which are fixedly connected to the top of the frame (8). There are two coolers (5), both of which are fixedly connected to the top of the frame (8). The inner cavity of the deoxygenator (7) is filled with palladium catalyst deoxygenating adsorbent, and the inner cavity of the dryer (1) is filled with molecular sieve.

3. The automatic hydrogenation nitrogen purification device according to claim 1, characterized in that: The filter (3) is connected to the first steel pipe on the back through the second steel pipe. The inner cavities of the first steel pipe and the second steel pipe are connected. The left side of the second steel pipe is fixedly connected to the third steel pipe. The right side of the right cooler (5) is fixedly connected to the left side of the third steel pipe and is connected to its inner cavity.

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