Device for preparing high-purity oxygen based on coupling separation technology

Abstract

The utility model discloses a device for preparing high-purity oxygen based on a coupling separation technology, which comprises at least one compression device, a set of control assembly, at least one set of drying device and at least one set of separation device, the compression device, the drying device and the separation device are sequentially connected, the drying device and the separation device are connected with a plurality of valves, and the valves are connected with the control assembly. The control assembly controls opening and closing of the valve, and a dynamic buffer tank capable of absorbing air generated by the compression equipment is connected between the compression equipment and the drying device. The utility model has the following advantages and effects: unqualified gas can be recovered to reduce energy loss, and the oxygen production effect is better.

Description

Technical Field

[0001] This utility model relates to the field of oxygen preparation, and more specifically, it relates to an apparatus for producing high-purity oxygen based on coupling separation technology. Background Technology

[0002] Pressure swing adsorption (PSA) is an important and widely used gas separation method, such as pressure swing adsorption drying, pressure swing adsorption oxygen production, nitrogen production, etc. Among them, adsorption drying is usually used to remove the moisture contained in compressed air to obtain dry compressed air with a low dew point.

[0003] The traditional PSA method for producing oxygen from airflow typically uses nitrogen adsorbents such as CaA, CaX, NaX, and LiX based on equilibrium adsorption theory. However, even if all nitrogen in the air is adsorbed, it is difficult to produce product oxygen with a concentration greater than 95%, and the product gas contains about 5% argon. Therefore, to obtain high-purity oxygen, more complex multi-stage pressure swing adsorption systems must be used when using adsorption methods. A domestic invention patent application (202110222393.0) discloses a method and apparatus for preparing high-purity oxygen. This scheme utilizes valves and adsorption / extraction towers to produce oxygen. However, this scheme results in negative pressure and wasted power because the air compressor is still operating while the adsorption / extraction towers are exchanging power.

[0004] Therefore, it is necessary to adjust the product and optimize the product device itself to reduce its large size and efficiency. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a device for producing high-purity oxygen based on coupling separation technology that can utilize substandard gases.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an apparatus for producing high-purity oxygen based on coupling separation technology, comprising at least one compression device, a control component, at least one drying device, a collection device, and at least one separation device, wherein the compression device, drying device, collection device, and separation device are connected in sequence, and the drying device and separation device are connected to a plurality of valves, and the control component controls the opening and closing of the valves, characterized in that: dynamic buffer tanks capable of absorbing air generated by the compression device are respectively connected between the compression device and the drying device, and between the separation device and the collection device.

[0007] The present invention is further configured such that the drying device includes two suction towers, several control valves, and a first exhaust component;

[0008] The adsorption tower includes dryer A and dryer B;

[0009] The control valves include control valve 01A, control valve 01B, control valve 02A, control valve 02B, control valve 03A, control valve 03B, control valve 04A, control valve 04B, and control valve 05.

[0010] Dryer A and Dryer B are respectively connected to the first exhaust component via control valve 02A and control valve 02B;

[0011] The compression device is equipped with a first pipe connecting the dynamic buffer tank and the suction tower;

[0012] Both dryer A and dryer B are provided with a second pipe connected to the first pipe, and control valves 01A and 01B are provided on the second pipe and control their connection with the first pipe respectively.

[0013] The drying A and drying B are connected to each other by a third pipe at one end, and the control valve 05 is installed in the third pipe and controls the connection of the third pipe.

[0014] The drying device is equipped with a fourth pipe that connects to the separation device.

[0015] Both dryer A and dryer B are provided with a fifth pipe that connects to the fourth pipe, and control valves 04A and 04B are installed on the fifth pipe and control their connection with the fourth pipe respectively.

[0016] The drying device is also equipped with a sixth pipe that connects to the separation device;

[0017] Both dryer A and dryer B are equipped with a seventh pipe that connects to the sixth pipe, and control valves 03A and 03B are installed on the seventh pipe and control their connection to the sixth pipe respectively.

[0018] The present invention is further configured such that the separation device includes an adsorption tower, several control valves, and a second exhaust component;

[0019] The adsorption tower includes manufacturing A and manufacturing B;

[0020] The control valves include control valve 01C, control valve 01D, control valve 02C, control valve 02D, control valve 03C, control valve 03D, control valve 04C, control valve 04D, control valve 05C, and control valve 05D.

[0021] Both manufacturing A and manufacturing B are equipped with an eighth pipe that connects to the sixth pipe, and control valve 01C and control valve 01D respectively control the connection of the eighth pipe.

[0022] The second exhaust component connects the sixth pipe and the eighth pipe and is equipped with a control valve 08;

[0023] Both manufacturing A and manufacturing B are equipped with a ninth pipe that connects to the fourth pipe, and control valve 02C and control valve 02D respectively control the connection of the ninth pipe.

[0024] Manufacturing A is provided with a tenth pipe that connects to Manufacturing B, and the control valve 03C controls the opening and closing of the tenth pipe.

[0025] Manufacturing B is provided with an eleventh pipe connected to Manufacturing A, and the control valve 03D controls the opening and closing of the eleventh pipe.

[0026] Both manufacturing plants A and B are equipped with a twelfth pipe for connecting to the collection device; control valves 04C and 04D control the connection of the twelfth pipe.

[0027] Manufacturing plants A and B are equipped with a thirteenth pipe that connects to the twelfth pipe; control valves 05C and 05D control the connection of the thirteenth pipe.

[0028] A method for producing high-purity oxygen based on a device-based coupling separation technology, comprising the following specific steps:

[0029] S1. The compression equipment provides air to the drying unit;

[0030] S2. The dry gas produced by the drying unit enters the separation unit;

[0031] S3. Oxygen generated by the separation device enters the collection device;

[0032] S4. Gases with substandard purity in the separation unit enter the reflux tank through the dynamic buffer tank for regeneration within the separation unit.

[0033] S5. Oxygen of qualified purity in the separation device is output and stored through a dynamic buffer tank.

[0034] The present invention is further configured such that: in step S1, the dynamic buffer tank can receive the gas from the drying device and the compression device and store and balance the gas pressure of the drying device, and can also be opened to instantly increase the pressure of the drying device after the drying device is depressurized.

[0035] In step S4, the dynamic buffer tank can quickly adjust the pressure inside the separation device.

[0036] By adopting the above technical solution, substandard gases can be recovered into a dynamic buffer tank. After processing, the pressure in the drying and separation devices can be quickly balanced. After depressurization, the pressure can be quickly increased, reducing energy loss and improving oxygen production efficiency and purity. Attached Figure Description

[0037] Figure 1 This is a flowchart illustrating an embodiment of the present utility model.

[0038] In the diagram: 1. Drying A; 2. Drying B; 3. Manufacturing A; 4. Manufacturing B; 11. Control Valve 01A; 12. Control Valve 02A; 13. Control Valve 03A; 14. Control Valve 04A; 15. Control Valve 05; 21. Control Valve 01B; 22. Control Valve 02B; 23. Control Valve 03B; 24. Control Valve 04B; 31. Control Valve 01C; 32. Control Valve 02C; 33. Control Valve 03C; 34. Control Valve 04C; 35. Control Valve 05C; 36. Control Valve 08; 41. Control Valve 01D; 42. Control valve 02D; 43. Control valve 03D; 44. Control valve 04D; 45. Control valve 05D; 5. Dynamic buffer tank; 61. First exhaust component; 62. Second exhaust component; 211. First pipeline; 212. Second pipeline; 213. Third pipeline; 214. Fourth pipeline; 215. Fifth pipeline; 216. Sixth pipeline; 217. Seventh pipeline; 218. Eighth pipeline; 219. Ninth pipeline; 220. Tenth pipeline; 221. Eleventh pipeline; 222. Twelfth pipeline; 223. Thirteenth pipeline. Detailed Implementation

[0039] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Reference Figure 1 The embodiments of this utility model will be further described below.

[0042] An apparatus for producing high-purity oxygen based on coupling separation technology includes at least one compression device, a control component, at least one drying device, a collection device, and at least one separation device. The compression device, drying device, collection device, and separation device are connected in sequence. The drying device and separation device are connected to several valves. The control component controls the opening and closing of the valves. The apparatus is characterized in that: dynamic buffer tanks 5 that can absorb the air generated by the compression device are connected between the compression device and the drying device, and between the separation device and the collection device.

[0043] The drying device includes two suction towers, several control valves, and a first exhaust component 61;

[0044] The adsorption tower includes dryer A1 and dryer B2;

[0045] The control valves include control valve 01A11, control valve 01B21, control valve 02A12, control valve 02B22, control valve 03A13, control valve 03B23, control valve 04A14, control valve 04B24, and control valve 0515.

[0046] Dryer A1 and dryer B2 are respectively connected to the first exhaust component 61 via control valve 02A12 and control valve 02B22;

[0047] The compression device is equipped with a first pipe 211 connecting the dynamic buffer tank 5 and the suction tower;

[0048] Both the dryer A1 and the dryer B2 are provided with a second pipe 212 that connects to the first pipe 211, and control valves 01A11 and 01B21 are provided on the second pipe 212 and control their connection with the first pipe 211 respectively.

[0049] The drying A1 and drying B2 are connected at one end by a third pipe 213, and the control valve 0515 is installed in the third pipe 213 and controls the connection of the third pipe 213.

[0050] The drying device is equipped with a fourth pipe 214 that connects to the separation device;

[0051] Both dryer A1 and dryer B2 are provided with a fifth pipe 215 that connects to the fourth pipe 214, and control valves 04A14 and 04B24 are provided on the fifth pipe 215 and control their connection with the fourth pipe 214 respectively.

[0052] The drying device is also equipped with a sixth pipe 216 that connects to the separation device;

[0053] Both dryer A1 and dryer B2 are provided with a seventh pipe 217 that connects to the sixth pipe 216, and control valves 03A13 and 03B23 are provided on the seventh pipe 217 and control their connection with the sixth pipe 216 respectively.

[0054] The separation device includes an adsorption tower, several control valves, and a second exhaust component 62.

[0055] The adsorption tower includes manufacturing A3 and manufacturing B4;

[0056] The control valves include control valve 01C31, control valve 01D41, control valve 02C32, control valve 02D42, control valve 03C33, control valve 03D43, control valve 04C34, control valve 04D44, control valve 0515C, and control valve 0515D.

[0057] Both manufacturing A3 and manufacturing B4 are equipped with an eighth pipe 218 that connects to the sixth pipe 216, and the control valve 01C31 and control valve 01D41 respectively control the connection of the eighth pipe 218.

[0058] The second exhaust component 62 connects the sixth pipe 216 and the eighth pipe 218 and is equipped with a control valve 0836;

[0059] Both manufacturing A3 and manufacturing B4 are equipped with a ninth pipe 219 that connects to the fourth pipe 214, and the control valve 02C32 and control valve 02D42 respectively control the connection of the ninth pipe 219.

[0060] Manufacturing A3 is provided with a tenth pipe 220 that connects to manufacturing B4, and the control valve 03C33 controls the opening and closing of the tenth pipe 220.

[0061] Manufacturing B4 is provided with an eleventh pipe 221 that connects to manufacturing A3, and the control valve 03D43 controls the opening and closing of the eleventh pipe 221.

[0062] Both manufacturing A3 and manufacturing B4 are equipped with a twelfth pipe 222 for connecting to the collection device; control valve 04C34 and control valve 04D44 control the connection of the twelfth pipe 222;

[0063] Manufacturing equipment A3 and manufacturing equipment B4 are equipped with a thirteenth pipe 223 that connects to the twelfth pipe 222; control valves 0515C and 0515D control the connection of the thirteenth pipe 223.

[0064] A method for producing high-purity oxygen based on a device-based coupling separation technology, comprising the following specific steps:

[0065] S1. The compression equipment provides air to the drying unit;

[0066] S2. The dry gas produced by the drying unit enters the separation unit;

[0067] S3. Oxygen generated by the separation device enters the collection device;

[0068] S4. Gases with substandard purity in the separation unit enter the reflux tank via the dynamic buffer tank 5 for regeneration within the separation unit.

[0069] S5. Oxygen of qualified purity in the separation device is output and stored through dynamic buffer tank 5.

[0070] In step S1, dynamic buffer tank 5 can receive gas from the drying device and the compression device and store and balance the gas pressure of the drying device. At the same time, it can be opened to instantly increase the pressure of the drying device after the drying device is depressurized.

[0071] In step S4, the dynamic buffer tank 5 can quickly adjust the pressure within the separation device. This specific embodiment is merely an explanation of the present invention and is not intended to limit it. Those skilled in the art, after reading this specification, can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. An apparatus for producing high-purity oxygen based on coupling separation technology, comprising at least one compression device, a control component, at least one drying device, a collection device, and at least one separation device, wherein the compression device, drying device, collection device, and separation device are connected in sequence, and the drying device and separation device are connected to a plurality of valves, and the control component controls the opening and closing of the valves, characterized in that: Dynamic buffer tanks that can absorb the air generated by the compression device are connected between the compression device and the drying device, and between the separation device and the collection device.

2. The apparatus for producing high-purity oxygen based on coupling separation technology according to claim 1, characterized in that: The drying device includes two suction towers, several control valves, and a first exhaust component; The adsorption tower includes dryer A and dryer B; The control valves include control valve 01A, control valve 01B, control valve 02A, control valve 02B, control valve 03A, control valve 03B, control valve 04A, control valve 04B, and control valve 05. Dryer A and Dryer B are respectively connected to the first exhaust component via control valve 02A and control valve 02B; The compression device is equipped with a first pipe connecting the dynamic buffer tank and the suction tower; Both dryer A and dryer B are provided with a second pipe connected to the first pipe, and control valves 01A and 01B are provided on the second pipe and control their connection with the first pipe respectively. The drying A and drying B are connected to each other by a third pipe at one end, and the control valve 05 is installed in the third pipe and controls the connection of the third pipe. The drying device is equipped with a fourth pipe that connects to the separation device. Both dryer A and dryer B are provided with a fifth pipe that connects to the fourth pipe, and control valves 04A and 04B are installed on the fifth pipe and control their connection with the fourth pipe respectively. The drying device is also equipped with a sixth pipe that connects to the separation device; Both dryer A and dryer B are equipped with a seventh pipe that connects to the sixth pipe, and control valves 03A and 03B are installed on the seventh pipe and control their connection to the sixth pipe respectively.

3. The apparatus for producing high-purity oxygen based on coupling separation technology according to claim 2, characterized in that: The separation device includes an adsorption tower, several control valves, and a second exhaust component. The adsorption tower includes manufacturing A and manufacturing B; The control valves include control valve 01C, control valve 01D, control valve 02C, control valve 02D, control valve 03C, control valve 03D, control valve 04C, control valve 04D, control valve 05C, and control valve 05D. Both manufacturing A and manufacturing B are equipped with an eighth pipe that connects to the sixth pipe, and control valve 01C and control valve 01D respectively control the connection of the eighth pipe. The second exhaust component connects the sixth pipe and the eighth pipe and is equipped with a control valve 08; Both manufacturing A and manufacturing B are equipped with a ninth pipe that connects to the fourth pipe, and control valve 02C and control valve 02D respectively control the connection of the ninth pipe. Manufacturing A is provided with a tenth pipe that connects to Manufacturing B, and the control valve 03C controls the opening and closing of the tenth pipe. Manufacturing B is provided with an eleventh pipe connected to Manufacturing A, and the control valve 03D controls the opening and closing of the eleventh pipe. Both manufacturing A and manufacturing B are equipped with a twelfth pipe connected to the collection device; control valves 04C and 04D control the connection of the twelfth pipe; both manufacturing A and manufacturing B are equipped with a thirteenth pipe connected to the twelfth pipe; control valves 05C and 05D control the connection of the thirteenth pipe.

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