Oxygen feeding device

Abstract

The utility model provides an oxygen feeding device which comprises a reforming furnace, a gas supply device, a gas supply device, a gas supply device, a gas supply device and a gas supply device, and is characterized in that the reforming furnace is provided with a tail gas inlet and a gas supply inlet; the oxygen supply pipeline is communicated with the air supply inlet; the nitrogen pipeline is communicated with the oxygen supply pipeline and is used for purging the oxygen supply pipeline; the steam pipeline is communicated with the oxygen supply pipeline, and the joint of the steam pipeline and the oxygen supply pipeline is arranged close to the air supply inlet. According to the technical scheme, the problem that in the prior art, the oxygen feeding success rate of a converter is low can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen injection, in particular to an oxygen injection device. Background Art

[0002] The tail gas conversion unit adopts pure oxygen catalytic conversion technology for process tail gas. It uses process tail gas as raw material, pure oxygen as oxidant, and steam as gasifying agent to produce the raw gas required by the production device. The conversion catalyst is loaded in the conversion furnace. The catalyst needs to be reduced before normal use. After the reduction of the conversion catalyst is completed, pure oxygen must be added immediately for start-up.

[0003] As an inert gas, nitrogen can effectively remove oxygen and other combustible gases in the system; steam can not only serve as a heat carrier, but also form a protective layer around the burner to prevent burner damage. However, in the prior art, in the preparation steps and oxygen injection process, most of the steps of nitrogen ramming and steam protection are missing, which leads to a low success rate of oxygen injection. Utility Model Content

[0004] The utility model provides an oxygen feeding device to solve the problem of low success rate of oxygen feeding in a converter in the prior art.

[0005] The utility model provides an oxygen feeding device, which comprises: a reforming furnace, which is provided with an exhaust gas inlet and an air supply inlet, wherein the exhaust gas inlet is used to introduce process exhaust gas; an oxygen supply pipeline, which is connected with the air supply inlet; a nitrogen pipeline, which is connected with the oxygen supply pipeline, and the nitrogen pipeline is used to purge the oxygen supply pipeline; a steam pipeline, which is connected with the oxygen supply pipeline, and the connection between the steam pipeline and the oxygen supply pipeline is arranged close to the air supply inlet.

[0006] Furthermore, the oxygen supply device also includes: a first valve assembly, which is arranged on the oxygen supply pipeline, and the first valve assembly can control the conduction or closing of the oxygen supply pipeline; a second valve assembly, which is arranged on the nitrogen pipeline, and the second valve assembly can control the conduction or closing of the nitrogen pipeline; a third valve assembly, which is arranged on the steam pipeline, and the third valve assembly can control the conduction or closing of the steam pipeline; a controller, which is electrically connected to the first valve assembly, the second valve assembly, and the third valve assembly, respectively, and the controller can control the operation of the first valve assembly, the second valve assembly, and the third valve assembly.

[0007] Furthermore, the oxygen injection device also includes a temperature sensor, which is arranged in the converter. The temperature sensor can detect the temperature in the converter. The temperature sensor is electrically connected to the controller, and the controller can control the operation of the first valve assembly, the second valve assembly and the third valve assembly according to the detection data of the temperature sensor.

[0008] Furthermore, the oxygen supply device also includes a preheater, which is arranged on the oxygen supply pipeline. The preheater is located upstream of the connection between the steam pipeline and the oxygen supply pipeline, and the preheater is used to heat the oxygen in the oxygen supply pipeline.

[0009] Furthermore, the first valve assembly includes a first oxygen control valve and a second oxygen control valve, the first oxygen control valve and the second oxygen control valve are respectively located on both sides of the preheater, and the second oxygen control valve is located between the preheater and the connection.

[0010] Further, the nitrogen pipeline includes a main line and a branch line, the second valve assembly includes a first nitrogen control valve, a second nitrogen control valve and a third nitrogen control valve, one end of the branch line is connected to the middle of the main line, the other end of the branch line is connected to the oxygen supply line and is located between the first oxygen control valve and the preheater, the end of the main line is connected to the oxygen supply line and is located between the second oxygen control valve and the connection, the first nitrogen control valve and the second nitrogen control valve are both arranged on the main line, and the first nitrogen control valve is located upstream of the branch line, the second nitrogen control valve is arranged near the end of the main line, and the third nitrogen control valve is arranged on the branch line.

[0011] Furthermore, the nitrogen pipeline also includes a supplementary pipeline, which is connected to the oxygen supply pipeline and is located between the second oxygen control valve and the connection point. The second valve assembly also includes a fourth nitrogen control valve, which is arranged on the supplementary pipeline.

[0012] Furthermore, the first valve assembly also includes a third oxygen control valve and a fourth oxygen control valve, the third oxygen control valve and the fourth oxygen control valve are both located between the second oxygen control valve and the main line, and the third oxygen control valve and the fourth oxygen control valve are respectively located on both sides of the supplementary pipeline.

[0013] Furthermore, the first valve assembly also includes a fifth oxygen control valve, the oxygen delivery device also includes a vent line, the vent line is connected to the oxygen supply line and is located downstream of the second oxygen control valve, and the fifth oxygen control valve is arranged on the vent line.

[0014] Furthermore, the oxygen administration device also includes a mixer, which is connected to the end of the oxygen supply pipeline and the gas supply inlet respectively, and the oxygen supply pipeline is connected to the gas supply inlet through the mixer.

[0015] By applying the technical solution of the utility model, an oxygen supply pipeline, a nitrogen pipeline and a steam pipeline are arranged in the oxygen feeding device. The oxygen supply pipeline is connected to the gas supply inlet of the converter to provide oxygen to the converter; the nitrogen pipeline is connected to the oxygen supply pipeline, and the nitrogen pipeline can purge the impurities in the oxygen supply pipeline, and can prevent the process tail gas or combustible gas in the converter from flowing back into the oxygen supply pipeline and mixing with air to form a flammable and explosive mixture, thereby reducing the risk of explosion. The connection between the steam pipeline and the oxygen supply pipeline is arranged close to the gas supply inlet, which helps to reduce the temperature at the burner in the converter and protect the burner from high temperature damage. Through the above arrangement, before oxygen is fed to the converter, other gases in the oxygen supply pipeline are first purged through the nitrogen pipeline, and then when oxygen is introduced into the burner in the converter through the oxygen supply pipeline, the steam pipeline also provides steam to the burner to protect the burner, so as to ensure the oxygen feeding effect of the oxygen feeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 The structure diagram of the oxygen delivery device provided by the utility model is shown;

[0018] Figure 2 The utility model shows an execution flow chart of the server of the oxygen delivery device provided by the utility model.

[0019] The above drawings include the following reference numerals:

[0020] 10. Converter; 11. Tail gas inlet; 12. Gas supply inlet;

[0021] 20. Oxygen supply pipeline; 21. First oxygen control valve; 22. Second oxygen control valve; 23. Third oxygen control valve; 24. Fourth oxygen control valve; 25. Fifth oxygen control valve; 26. Sixth oxygen control valve;

[0022] 30, nitrogen pipeline; 301, main pipeline; 302, branch pipeline; 303, supplementary pipeline; 31, first nitrogen control valve; 32, second nitrogen control valve; 33, third nitrogen control valve; 34, fourth nitrogen control valve; 35, fifth nitrogen control valve;

[0023] 40. Steam pipeline; 41. Third valve assembly; 50. Temperature sensor;

[0024] 60. Preheater;

[0025] 70. Mixer;

[0026] 80. Vent pipelines;

[0027] 90. Branch pipeline. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides an oxygen injection device, which includes: a converter 10, an oxygen supply pipeline 20, a nitrogen pipeline 30 and a steam pipeline 40. The converter 10 has a tail gas inlet 11 and a gas supply inlet 12, and the tail gas inlet 11 is used to introduce process tail gas. The oxygen supply pipeline 20 is connected to the gas supply inlet 12. The nitrogen pipeline 30 is connected to the oxygen supply pipeline 20, and the nitrogen pipeline 30 is used to purge the oxygen supply pipeline 20. The steam pipeline 40 is connected to the oxygen supply pipeline 20, and the connection between the steam pipeline 40 and the oxygen supply pipeline 20 is arranged near the gas supply inlet 12. The gas source of the oxygen supply pipeline 20 and the nitrogen pipeline 30 can be provided by an air separation unit.

[0030] By applying the technical solution of the utility model, an oxygen supply pipeline 20, a nitrogen pipeline and a steam pipeline are arranged in the oxygen supply device. The oxygen supply pipeline 20 is connected to the gas supply inlet 12 of the converter 10, and is used to provide oxygen to the converter 10; the nitrogen pipeline 30 is connected to the oxygen supply pipeline 20, and the nitrogen pipeline 30 can purge the impurities in the oxygen supply pipeline 20, and can prevent the process tail gas or combustible gas in the converter 10 from flowing back into the oxygen supply pipeline 20 and mixing with air to form a flammable and explosive mixture, thereby reducing the risk of explosion. The connection between the steam pipeline 40 and the oxygen supply pipeline 20 is arranged close to the gas supply inlet 12, which helps to reduce the temperature at the burner in the converter 10 and protect the burner from high temperature damage. Through the above arrangement, before oxygen is added to the converter 10, other gases in the oxygen supply pipeline 20 are first purged through the nitrogen pipeline 30. Then, when oxygen is introduced into the burner in the converter 10 through the oxygen supply pipeline 20, the steam pipeline 40 also provides steam to protect the burner, so as to ensure the oxygen addition effect of the oxygen addition device.

[0031] Furthermore, the oxygen delivery device also includes: a first valve assembly, a second valve assembly, a third valve assembly 41 and a controller. Among them, the first valve assembly is arranged on the oxygen supply pipeline 20, and the first valve assembly can control the conduction or closing of the oxygen supply pipeline 20. The second valve assembly is arranged on the nitrogen pipeline 30, and the second valve assembly can control the conduction or closing of the nitrogen pipeline 30. The third valve assembly 41 is arranged on the steam pipeline 40, and the third valve assembly 41 can control the conduction or closing of the steam pipeline 40. The controller is electrically connected to the first valve assembly, the second valve assembly, and the third valve assembly 41 respectively, and the controller can control the operation of the first valve assembly, the second valve assembly and the third valve assembly 41. In the present application, a flow meter is also arranged on the steam pipeline 40 to control the flow rate of steam introduced. In the prior art, the opening and closing of each control valve during the oxygen delivery process is completely manually operated one by one, which is extremely inefficient. Through the above arrangement, the controller is respectively connected to the signals of each valve assembly, so that the controller can respectively open or close the oxygen supply pipeline 20, the nitrogen pipeline 30 and the steam pipeline 40, and then control different pipelines in a certain order to realize automatic oxygen supply to the burner in the converter.

[0032] Furthermore, the oxygen feeding device also includes a temperature sensor 50, which is arranged in the converter 10. The temperature sensor 50 can detect the temperature in the converter 10. The temperature sensor 50 is electrically connected to the controller, and the controller can control the operation of the first valve assembly, the second valve assembly, and the third valve assembly 41 according to the detection data of the temperature sensor 50. Through the above arrangement, the temperature change in the converter 10 can be monitored in real time. When the temperature in the converter reaches a predetermined temperature, each valve assembly can be controlled by the controller, and oxygen is fed to the burner in the converter in time according to the steps, so as to ensure the effect of oxygen feeding and improve the success rate of oxygen feeding. After the oxygen feeding is completed, it can also be judged whether the oxygen feeding is successful according to the real-time temperature of the temperature sensor 50. In the present application, the temperature sensor 50 is arranged on the reaction bed in the converter 10, and is respectively arranged at different positions of the reaction bed. According to the two temperature sensors 50, it can be judged whether the entire bed has reached the preset temperature, and the judgment result is more accurate.

[0033] Furthermore, the oxygen supply device also includes a preheater 60, which is arranged on the oxygen supply pipeline 20, and the preheater 60 is located upstream of the connection between the steam pipeline 40 and the oxygen supply pipeline 20, and the preheater 60 is used to heat the oxygen in the oxygen supply pipeline 20. In this way, the temperature of the oxygen can be increased before entering the burner, thereby increasing the kinetic energy and reaction activity of the oxygen, so that the oxygen can be mixed with the fuel more fully, and the ignition rate is increased, thereby improving the combustion efficiency and reducing the harmful gases generated by incomplete combustion. At the same time, because the oxygen is preheated, more energy can be released during combustion, reducing the dependence on external energy and achieving energy conservation.

[0034] In the present application, the first valve assembly includes a first oxygen control valve 21 and a second oxygen control valve 22, the first oxygen control valve 21 and the second oxygen control valve 22 are respectively located on both sides of the preheater 60, and the second oxygen control valve 22 is located between the preheater 60 and the connection. Through the above arrangement, the first oxygen control valve 21 is the valve closest to the entrance of the oxygen supply pipeline 20, and is the valve that starts the oxygen injection process, and can control when the oxygen from the air separation unit starts to be introduced into or cut off in the oxygen supply pipeline 20. The oxygen preheated by the preheater 60 is retained between the preheater 60 and the second oxygen control valve 22, that is, the oxygen supply journey of the oxygen in the oxygen supply pipeline 20 is segmented, shortening the single forward journey of the oxygen, because the oxygen supply pipeline 20 in the present application is made of metal, so that the oxygen supply path is divided into multiple sections, which can reduce the static electricity generated by the friction or impact between the high-speed flowing oxygen and the oxygen supply pipeline 20, and the risk of explosion caused by accumulating to a certain extent or encountering the combustible gas flowing back in the converter 10.

[0035] Among them, the nitrogen pipeline 30 includes a main line 301 and a branch line 302, the second valve assembly includes a first nitrogen control valve 31, a second nitrogen control valve 32 and a third nitrogen control valve 33, one end of the branch line 302 is connected to the middle of the main line 301, the other end of the branch line 302 is connected to the oxygen supply pipeline 20, and is located between the first oxygen control valve 21 and the preheater 60, the end of the main line 301 is connected to the oxygen supply pipeline 20, and is located between the second oxygen control valve 22 and the connection, the first nitrogen control valve 31 and the second nitrogen control valve 32 are both arranged on the main line 301, and the first nitrogen control valve 31 is located upstream of the branch line 302, the second nitrogen control valve 32 is arranged near the end of the main line 301, and the third nitrogen control valve 33 is arranged on the branch line 302.

[0036] Through the above arrangement, before oxygen is added to the burner in the converter 10, the air, combustible gas or impurities in the pipeline before the oxygen addition begins can be purged through the above nitrogen control valve to prevent explosion during the oxygen addition process. After the oxygen addition is completed, the combustible gas in the pipeline can also be cleared and replaced by the nitrogen in the main line 301 to prevent the occurrence of flashback of the burner and avoid safety accidents. And if the oxygen addition fails, nitrogen can also be introduced into the converter 10 through the main line 301 to reduce the oxygen content in the converter 10 to avoid the catalyst from reacting with oxygen under high temperature and causing failure. At the same time, the branch line 302 is connected to the oxygen supply line 20, and nitrogen can also be pressed into the oxygen supply line 20 through the branch line 302. A pressure gauge is set on the oxygen supply line 20, and the oxygen supply line 20 is judged by observing the changes in the pressure gauge to determine whether it is damaged, so as to ensure the smooth progress of the subsequent oxygen addition process.

[0037] Specifically, the nitrogen pipeline 30 also includes a supplementary pipeline 303, which is connected to the oxygen supply pipeline 20 and is located between the second oxygen control valve 22 and the connection. The second valve assembly also includes a fourth nitrogen control valve 34, which is arranged on the supplementary pipeline 303. Through the above arrangement, the supplementary pipeline 303 can be connected to the gas supply inlet of the converter 10 through the oxygen supply pipeline 20. Before the oxygen injection begins, the fourth nitrogen control valve 34 is in an open state, and the nitrogen in the pipeline is used to block the gas supply inlet of the converter 10 to prevent the combustible gas in the converter 10 from entering the oxygen supply pipeline 20 and causing an explosion when oxygen is injected, thereby improving the safety of the oxygen injection process. In the present application, a fifth nitrogen control valve 35 is also arranged on the supplementary pipeline 303 to further protect the supplementary pipeline 303 and prevent the combustible gas from being diverted into the supplementary pipeline 303.

[0038] In the present application, the first valve assembly further includes a third oxygen control valve 23 and a fourth oxygen control valve 24, both of which are located between the second oxygen control valve 22 and the main line 301, and the third oxygen control valve 23 and the fourth oxygen control valve 24 are respectively located on both sides of the supplementary line 303. Through the above arrangement, the third oxygen control valve 23 segments the oxygen supply stroke, further shortens the single stroke of oxygen flowing in the oxygen supply line 20, reduces the friction between oxygen and the pipeline, reduces the risk of explosion, and further improves the safety of the oxygen delivery process.

[0039] Specifically, the first valve assembly also includes a fifth oxygen control valve 25, and the oxygen delivery device also includes a venting line 80, which is connected to the oxygen supply line 20 and is located downstream of the second oxygen control valve 22, and the fifth oxygen control valve 25 is arranged on the venting line 80. Through the above arrangement, the venting line 80 can be used as a safety device of the oxygen delivery device. When the pressure of the oxygen delivery device exceeds the safety threshold, the fifth oxygen control valve 25 can be controlled to quickly release excess oxygen from the oxygen supply line 20 to prevent the pipeline from being damaged due to overpressure. At the same time, through the arrangement of the venting line 80, the pressure and flow of oxygen in the oxygen supply line 20 can also be accurately controlled to ensure the safe operation of the entire oxygen delivery device.

[0040] Furthermore, the oxygen supply pipeline 20 further includes a branch pipeline 90, which is located between the preheater 60 and the second oxygen control valve 22, and the sixth oxygen control valve 26 is arranged on the branch pipeline 90. Through the above arrangement, before the oxygen administration begins, oxygen is first introduced into the oxygen supply pipeline 20 from the first oxygen control valve 21, and then flows out from the branch pipeline 90, so that it can be ensured that there are no potential explosion factors such as combustible gas or dust in the oxygen supply pipeline 20, thereby reducing safety risks.

[0041] The oxygen supply device further includes a mixer 70, which is connected to the end of the oxygen supply pipeline 20 and the gas supply inlet 12 respectively, and the oxygen supply pipeline 20 is connected to the gas supply inlet 12 through the mixer 70. Through the above arrangement, the mixer 70 can mix the oxygen in the oxygen supply pipeline 20 with the steam in the steam pipeline 40, and the steam can be used as a diluent to reduce the combustion temperature and protect the burner to prevent the excessively high combustion temperature from causing thermal damage to the burner. The mixer 70 can evenly mix the oxygen and the steam to ensure even combustion of the oxygen and effective cooling of the steam.

[0042] In the present application, the oxygen delivery device also includes a server, which is remotely connected to the controller and the temperature sensor 50 in the converter 10 by signals. The server is the operating end for the staff, and the server provides the operator with a human-machine interface and sequential operation buttons required for the oxygen delivery process. With this arrangement, the staff can control the oxygen delivery process and steps in real time by operating different sequential buttons on the human-machine interface, thereby improving the safety and convenience of the oxygen delivery process.

[0043] Specifically, when the oxygen feeding device provided in the present application is used to feed oxygen to the reformer 10, the operating steps are as follows:

[0044] Step 1: The operator clicks on the oxygen injection initialization at the operation end, and then the signal is transmitted to the controller, which controls the fifth oxygen control valve 25, the fourth nitrogen control valve 34 and the fifth nitrogen control valve 35 to be in the open state, and the remaining valves to be in the closed state, and the fifth oxygen control valve 25 vents the gas in the oxygen supply pipeline 20. The nitrogen is allowed to enter the oxygen supply pipeline 20 from the supplementary pipeline 303 through the fourth nitrogen control valve 34 and the fifth nitrogen control valve 35, and is blocked in front of the fourth oxygen control valve 24 to prevent the fourth oxygen control valve 24 from being damaged, and the combustible gas in the converter 10 from flowing back into the oxygen supply pipeline 20;

[0045] Step 2: The operator clicks nitrogen stamping on the operating end. At this time, the controller controls the first nitrogen control valve 31, the second nitrogen control valve 32 and the third nitrogen control valve 33 to be in the open state based on the previous step, and nitrogen is introduced into the main pipeline 301 and the branch pipeline 302 to purge impurities in the pipeline and stamp the pipeline at the same time;

[0046] Step 3: The operator clicks on the operating end to end the stamping. At this time, the fifth oxygen control valve 25, the first nitrogen control valve 31, the second nitrogen control valve 32, the fourth nitrogen control valve 34 and the fifth nitrogen control valve 35 are in the open state, and the other valves are in the closed state. At this time, observe whether the air pressure of the pipeline section of the oxygen supply pipeline 20 filled with nitrogen changes, and then observe whether the oxygen supply pipeline 20 is damaged;

[0047] Step 4: The operator clicks on the oxygen feeding preparation button at the operation end. At this time, the fifth oxygen control valve 25, the first oxygen control valve 21, the preheater 60, the sixth oxygen control valve 26, the fourth nitrogen control valve 34 and the fifth nitrogen control valve 35 are in the open state to preheat the oxygen. At the same time, part of the oxygen will be discharged through the branch line 90, so that this section of the pipeline is pre-adapted to the flow of oxygen;

[0048] Step 5: The operator clicks on the oxygen injection at the operation end. At this time, the controller will first close the fifth oxygen control valve 25 and the sixth oxygen control valve 26, and the preheated oxygen will flow out from the preheater 60, and the preheated oxygen will be retained in front of the second oxygen control valve 22. Then the third oxygen control valve 23 will be controlled to open, and the fourth nitrogen control valve 34 and the fifth nitrogen control valve 35 will be closed at the same time. After closing in place, the fourth oxygen control valve 24 will be opened to avoid excessive pressure of the fourth nitrogen control valve 34 and the fifth nitrogen control valve 35, which makes it difficult to open the fourth oxygen control valve 24. Then, the second oxygen control valve 22 will be opened. After the oxygen flows into the mixer 70, it enters the converter 10 to ignite the burner. Then, when the temperature in the converter 10 rises by ≥5°C within 300 seconds, the oxygen injection is successful, otherwise the oxygen injection fails. If the oxygen injection fails, close all valves, click on nitrogen injection, and inject nitrogen into the oxygen supply pipeline 20 and the catalyst in the converter 10 in time for protection.

[0049] Through the technical solution provided by the present application, before oxygen is added to the converter, the other gases in the oxygen supply pipeline 20 are first purged through the nitrogen pipeline 30, and then when oxygen is introduced to the burner in the converter 10 through the oxygen supply pipeline 20, the steam pipeline 40 also provides steam to the burner to protect the burner, so as to ensure the oxygen addition effect of the oxygen addition device. And in conjunction with the controller and the server, the oxygen addition device can realize automatic oxygen addition according to a certain sequence of steps, and automatically judge whether the oxygen addition is successful according to predetermined conditions. In this way, the failure of oxygen addition caused by the inability to accurately judge the temperature rise due to differences in human cognition and ability can be avoided, the start-up time can be shortened, the catalyst can be protected, and the energy consumption of the device can be reduced.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0052] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0053] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0054] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oxygen delivery device, characterized in that: The oxygen delivery device comprises: The reformer (10) has an exhaust gas inlet (11) and a gas supply inlet (12), wherein the exhaust gas inlet (11) is used to introduce process exhaust gas; an oxygen supply pipeline (20) connected to the gas supply inlet (12); a nitrogen pipeline (30), which is in communication with the oxygen supply pipeline (20), and the nitrogen pipeline (30) is used to purge the oxygen supply pipeline (20); The steam pipeline (40) is in communication with the oxygen supply pipeline (20), and the connection between the steam pipeline (40) and the oxygen supply pipeline (20) is arranged close to the gas supply inlet (12).

2. The oxygen delivery device according to claim 1, characterized in that: The oxygen delivery device also includes: A first valve assembly, arranged on the oxygen supply pipeline (20), wherein the first valve assembly can control the opening or closing of the oxygen supply pipeline (20); a second valve assembly, arranged on the nitrogen pipeline (30), the second valve assembly being capable of controlling the opening or closing of the nitrogen pipeline (30); a third valve assembly (41), arranged on the steam pipeline (40), wherein the third valve assembly (41) is capable of controlling the opening or closing of the steam pipeline (40); A controller is electrically connected to the first valve assembly, the second valve assembly and the third valve assembly (41) respectively, and the controller is capable of controlling the operation of the first valve assembly, the second valve assembly and the third valve assembly (41).

3. The oxygen delivery device according to claim 2, characterized in that: The oxygen injection device further comprises a temperature sensor (50), wherein the temperature sensor (50) is arranged in the converter (10), and the temperature sensor (50) is capable of detecting the temperature in the converter (10). The temperature sensor (50) is electrically connected to the controller, and the controller is capable of controlling the operation of the first valve assembly, the second valve assembly, and the third valve assembly (41) according to the detection data of the temperature sensor (50).

4. The oxygen delivery device according to claim 2, characterized in that: The oxygen supply device further comprises a preheater (60), which is arranged on the oxygen supply pipeline (20). The preheater (60) is located upstream of the connection between the steam pipeline (40) and the oxygen supply pipeline (20), and is used to heat the oxygen in the oxygen supply pipeline (20).

5. The oxygen delivery device according to claim 4, characterized in that: The first valve assembly comprises a first oxygen control valve (21) and a second oxygen control valve (22), wherein the first oxygen control valve (21) and the second oxygen control valve (22) are respectively located on both sides of the preheater (60), and the second oxygen control valve (22) is located between the preheater (60) and the connection point.

6. The oxygen delivery device according to claim 5, characterized in that: The nitrogen pipeline (30) comprises a main pipeline (301) and a branch pipeline (302), the second valve assembly comprises a first nitrogen control valve (31), a second nitrogen control valve (32) and a third nitrogen control valve (33), one end of the branch pipeline (302) is connected to the middle of the main pipeline (301), the other end of the branch pipeline (302) is connected to the oxygen supply pipeline (20) and is located between the first oxygen control valve (21) and the preheater (60), the main pipeline (301) The end of the main pipeline (301) is connected to the oxygen supply pipeline (20) and is located between the second oxygen control valve (22) and the connection point. The first nitrogen control valve (31) and the second nitrogen control valve (32) are both arranged on the main pipeline (301), and the first nitrogen control valve (31) is located upstream of the branch pipeline (302). The second nitrogen control valve (32) is arranged close to the end of the main pipeline (301). The third nitrogen control valve (33) is arranged on the branch pipeline (302).

7. The oxygen delivery device according to claim 6, characterized in that: The nitrogen pipeline (30) further comprises a supplementary pipeline (303), wherein the supplementary pipeline (303) is in communication with the oxygen supply pipeline (20) and is located between the second oxygen control valve (22) and the connection point, and the second valve assembly further comprises a fourth nitrogen control valve (34), wherein the fourth nitrogen control valve (34) is arranged on the supplementary pipeline (303).

8. The oxygen delivery device according to claim 7, characterized in that: The first valve assembly further comprises a third oxygen control valve (23) and a fourth oxygen control valve (24), wherein the third oxygen control valve (23) and the fourth oxygen control valve (24) are both located between the second oxygen control valve (22) and the main line (301), and the third oxygen control valve (23) and the fourth oxygen control valve (24) are respectively located on both sides of the supplementary line (303).

9. The oxygen delivery device according to claim 5, characterized in that: The first valve assembly further includes a fifth oxygen control valve (25), and the oxygen delivery device further includes a venting pipeline (80), wherein the venting pipeline (80) is in communication with the oxygen supply pipeline (20) and is located downstream of the second oxygen control valve (22), and the fifth oxygen control valve (25) is arranged on the venting pipeline (80).

10. The oxygen delivery device according to claim 1, characterized in that: The oxygen delivery device further comprises a mixer (70), wherein the mixer (70) is respectively connected to the end of the oxygen supply pipeline (20) and the gas supply inlet (12), and the oxygen supply pipeline (20) is connected to the gas supply inlet (12) via the mixer (70).

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