A high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen

Abstract

The application belongs to the technical field of oxygen generator, and particularly relates to a high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen, which comprises a 93% oxygen oxygen generation system and a 99.5% oxygen oxygen generation system, the 93% oxygen oxygen generation system comprises an air compressor, a cold dryer, an air buffer tank, a 93% oxygen adsorption tower A, a 93% oxygen adsorption tower B, a first regeneration tank and a 93% oxygen storage tank, and the 99.5% oxygen oxygen generation system comprises a second regeneration tank, a 99.5% oxygen adsorption tower A, a 99.5% oxygen adsorption tower B, a booster and a 99.5% oxygen storage tank. The application can simultaneously provide 93% and 99.5% oxygen, meets the differentiated requirements of different departments in hospitals and other places for oxygen concentration, improves the applicability and practicability of the equipment, can reasonably classify and collect the purge gas in the secondary purification process and use it in different adsorption processes, effectively improves the oxygen recycling rate, reduces energy consumption, saves production cost, and realizes the green production goal of energy saving and consumption reduction.

Description

Technical Field

[0001] This invention relates to the field of oxygen generator technology, and in particular to a high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% and 99.5% oxygen. Background Technology

[0002] Molecular sieve oxygen concentrators are widely used oxygen-generating devices in medicine. They mainly utilize the adsorption properties of large particles, using a high-displacement oil-free compressor to separate nitrogen and oxygen in the air, ultimately obtaining high-concentration oxygen. This type of oxygen concentrator produces oxygen rapidly, with high oxygen concentration, and is inexpensive, making it suitable for oxygen therapy and oxygen health care for various groups. Existing 99.5% oxygen concentrators typically only produce oxygen with a concentration of 99.5%.

[0003] The purge gas generated during the secondary purification process of a current 99.5% oxygen generator is used to purge the adsorption tower of a primary pressure swing adsorption (PSA) system. While this effectively increases the gas production of a 93% oxygen generator, the overall efficiency improvement is limited, and the following problems exist: It cannot simultaneously produce oxygen at two different concentrations, 93% and 99.5%, and therefore cannot meet the needs of hospitals and other places for different concentrations of oxygen, resulting in poor applicability. The oxygen production process is not refined enough, failing to fully utilize the gases produced in each step, resulting in low energy recovery and utilization rates, resource waste, and increased production costs. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art, namely, that molecular sieve oxygen generators cannot simultaneously produce two different concentrations of oxygen, 93% and 99.5%, and that the oxygen production process is not refined enough. The invention proposes a high-efficiency molecular sieve oxygen generator that can simultaneously provide 93% and 99.5% oxygen.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen includes a 93% oxygen generation system and a 99.5% oxygen generation system, wherein the oxygen outlet of the 93% oxygen generation system is connected to the oxygen inlet of the 99.5% oxygen generation system. The 93% oxygen generation system includes an air compressor, a refrigerated dryer, an air buffer tank, a 93% oxygen adsorption tower A, a 93% oxygen adsorption tower B, a first regeneration tank, and a 93% oxygen storage tank. The air compressor's outlet is connected to the refrigerated dryer's inlet, and the refrigerated dryer's outlet is connected to the air buffer tank's inlet. The air buffer tank's outlet is provided with a first pipeline. The 93% oxygen adsorption tower A and 93% oxygen adsorption tower B are respectively provided with a second pipeline and a third pipeline. The first, second, and third pipelines are connected by a first valve assembly. The 93% oxygen adsorption tower A, 93% oxygen adsorption tower B, and the first regeneration tank are respectively provided with a fifth, sixth, and eighth pipeline. The fifth, sixth, and eighth pipelines are connected by a second valve assembly. The second valve assembly is connected to the 93% oxygen storage tank via a seventh pipeline. The 93% oxygen storage tank's outlet is provided with a ninth pipeline. The 99.5% oxygen generation system includes a second regeneration tank, a 99.5% oxygen adsorption tower A, a 99.5% oxygen adsorption tower B, a booster compressor, and a 99.5% oxygen storage tank. The second regeneration tank has a twelfth pipeline and a twenty-first pipeline at its inlet and outlet ends, respectively. The 99.5% oxygen adsorption tower A and the 99.5% oxygen adsorption tower B have a thirteenth pipeline, a fourteenth pipeline, a fifteenth pipeline, and a sixteenth pipeline at their inlet and outlet ends, respectively. The thirteenth and fourteenth pipelines are connected by a third valve assembly, and the fifteenth and sixteenth pipelines are connected by a fourth valve assembly. The fourth valve assembly is connected to the booster compressor and the 99.5% oxygen storage tank by a seventeenth pipeline and an eighteenth pipeline, respectively. The booster compressor and the 99.5% oxygen storage tank are connected by a twentieth pipeline, and the outlet end of the 99.5% oxygen storage tank has a nineteenth pipeline.

[0006] Preferably, the first valve assembly includes a first left tower inlet valve, a first right tower inlet valve, a left tower nitrogen venting valve, and a right tower nitrogen venting valve.

[0007] Preferably, the outlet ends of the left tower nitrogen venting valve and the right tower nitrogen venting valve are connected through a fourth pipeline.

[0008] Preferably, the second valve assembly includes a pressure equalization valve, a first left tower purge valve, a first right tower purge valve, a first left tower oxygen outlet valve, and a first right tower oxygen outlet valve.

[0009] Preferably, the third valve assembly includes a second left tower equalizing valve, a second left tower regeneration valve, a first left tower regeneration valve, a left tower argon discharge valve, a right tower argon discharge valve, a first right tower regeneration valve, a second right tower regeneration valve, and a second right tower equalizing valve.

[0010] Preferably, the fourth valve assembly includes a second left tower inlet valve, a second left tower purge valve, a second left tower oxygen outlet valve, a second right tower oxygen outlet valve, a second right tower purge valve, and a right tower inlet valve.

[0011] Preferably, the third valve assembly is connected to the first regeneration tank via an eleventh pipeline.

[0012] Preferably, the oxygen outlet of the 93% oxygen storage tank is connected to the second regeneration tank via a tenth pipeline.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention can simultaneously provide oxygen at two concentrations, 93% and 99.5%, to meet the diverse oxygen concentration requirements of different departments in hospitals and other locations, thereby improving the applicability and practicality of the equipment.

[0014] In this invention, advanced molecular sieve pressure swing adsorption technology and gas recovery and utilization process are adopted to rationally classify and collect the purge gas in the secondary purification process and reuse it in different adsorption processes. This effectively improves the oxygen recovery and utilization rate, reduces energy consumption, saves production costs, and achieves the green production goal of energy saving and consumption reduction.

[0015] In this invention, the equipment operates stably and reliably, the control system operates independently, and the working status of each part can be flexibly adjusted according to different needs. It is easy to operate and maintain, and provides a stable, efficient and economical oxygen supply solution for hospitals and other places, with significant economic and social benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a high-efficiency molecular sieve oxygen generator that can simultaneously provide 93% and 99.5% oxygen, as proposed in this invention.

[0017] In the diagram: 1. Air compressor; 2. Refrigerated dryer; 3. Air buffer tank; 4. 93% oxygen adsorption tower A; 5. 93% oxygen adsorption tower B; 6. First regeneration tank; 7. 93% oxygen storage tank; 8. First left tower inlet valve; 9. First right tower inlet valve; 10. Left tower nitrogen vent valve; 11. Right tower nitrogen vent valve; 12. Equalizing valve; 13. First left tower purge valve; 14. First right tower purge valve; 15. First left tower oxygen outlet valve; 16. First right tower oxygen outlet valve; 17. First pipeline; 18. Second pipeline; 19. Third pipeline; 20. Fourth pipeline; 21. Fifth pipeline; 22. Sixth pipeline; 23. Seventh pipeline; 24. Eighth pipeline; 25. Ninth pipeline; 26. Tenth pipeline; 27. Eleventh pipeline; 28. Second regeneration tank; 29. ​​99.5% oxygen adsorption tower A; 30. 99% oxygen adsorption tower B; 11. 99% oxygen adsorption tower B; 22. 99% oxygen adsorption tower B; 33. 99% oxygen adsorption tower B; 4. 99% oxygen adsorption tower A; 5. 99% oxygen adsorption tower B; 6. 99% oxygen adsorption tower B; 7. 99% oxygen adsorption tower B; 8. 99% oxygen adsorption tower B; ... 0.5% Oxygen Adsorption Tower B; 31. Booster; 32. 99.5% Oxygen Storage Tank; 33. Second Left Tower Pressure Equalizing Valve; 34. Second Left Tower Regeneration Valve; 35. First Left Tower Regeneration Valve; 36. Left Tower Argon Discharge Valve; 37. Right Tower Argon Discharge Valve; 38. First Right Tower Regeneration Valve; 39. Second Right Tower Regeneration Valve; 40. Second Right Tower Pressure Equalizing Valve; 41. Second Left Tower Inlet Valve; 42. Second Left Tower Purge Valve; 43. Second Left Tower Oxygen Outlet Valve; 44. Second Right Tower Oxygen Outlet Valve; 45. Second Right Tower Purge Valve; 46. Second Right Tower Inlet Valve; 47. Twelfth Pipeline; 48. Thirteenth Pipeline; 49. Fourteenth Pipeline; 50. Fifteenth Pipeline; 51. Sixteenth Pipeline; 52. Seventeenth Pipeline; 53. Eighteenth Pipeline; 54. Nineteenth Pipeline; 55. Twentieth Pipeline; 56. Twenty-first Pipeline. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figure 1 A high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen includes a 93% oxygen generation system and a 99.5% oxygen generation system, wherein the oxygen outlet of the 93% oxygen generation system is connected to the oxygen inlet of the 99.5% oxygen generation system. In this embodiment, the 93% oxygen generation system includes an air compressor 1, a refrigerated dryer 2, an air buffer tank 3, a 93% oxygen adsorption tower A4, a 93% oxygen adsorption tower B5, a first regeneration tank 6, and a 93% oxygen storage tank 7. The air outlet of the air compressor 1 is connected to the air inlet of the refrigerated dryer 2, and the air outlet of the refrigerated dryer 2 is connected to the air inlet of the air buffer tank 3. In this embodiment, the air outlet of the air buffer tank 3 is provided with a first pipeline 17, and the air inlet of the 93% oxygen adsorption tower A4 and the 93% oxygen adsorption tower B5 are respectively provided with a second pipeline 18 and a third pipeline 19. The first pipeline 17, the second pipeline 18 and the third pipeline 19 are connected by a first valve assembly. In this embodiment, the first valve assembly includes a first left tower inlet valve 8, a first right tower inlet valve 9, a left tower nitrogen venting valve 10, and a right tower nitrogen venting valve 11. The outlet ends of the left tower nitrogen venting valve 10 and the right tower nitrogen venting valve 11 are connected through a fourth pipeline 20. In this embodiment, the outlet ends of the 93% oxygen adsorption tower A4, the 93% oxygen adsorption tower B5, and the first regeneration tank 6 are respectively provided with a fifth pipeline 21, a sixth pipeline 22, and an eighth pipeline 24. The fifth pipeline 21, the sixth pipeline 22, and the eighth pipeline 24 are connected by a second valve assembly. The second valve assembly includes a pressure equalization valve 12, a first left tower purge valve 13, a first right tower purge valve 14, a first left tower oxygen outlet valve 15, and a first right tower oxygen outlet valve 16. The second valve assembly is connected to the 93% oxygen storage tank 7 through a seventh pipeline 23. The outlet end of the 93% oxygen storage tank 7 is provided with a ninth pipeline 25. In this embodiment, the 99.5% oxygen generation system includes a second regeneration tank 28, a 99.5% oxygen adsorption tower A29, a 99.5% oxygen adsorption tower B30, a booster 31, and a 99.5% oxygen storage tank 32. The inlet and outlet of the second regeneration tank 28 are respectively provided with a twelfth pipeline 47 and a twenty-first pipeline 56. The inlet and outlet of the 99.5% oxygen adsorption tower A29 and the 99.5% oxygen adsorption tower B30 are respectively provided with a thirteenth pipeline 48, a fourteenth pipeline 49, a fifteenth pipeline 50, and a sixteenth pipeline 51. The thirteenth pipeline 48 and the fourteenth pipeline 49 are connected by a third valve assembly. The third valve assembly is connected to the first regeneration tank 6 through an eleventh pipeline 27. The outlet of the 93% oxygen storage tank 7 is connected to the second regeneration tank 28 through a tenth pipeline 26. In this embodiment, the third valve assembly includes a second left tower equalizing valve 33, a second left tower regeneration valve 34, a first left tower regeneration valve 35, a left tower argon discharge valve 36, a right tower argon discharge valve 37, a first right tower regeneration valve 38, a second right tower regeneration valve 39, and a second right tower equalizing valve 40. In this embodiment, the fifteenth pipeline 50 and the sixteenth pipeline 51 are connected by a fourth valve assembly. The fourth valve assembly includes a second left tower inlet valve 41, a second left tower purge valve 42, a second left tower oxygen outlet valve 43, a second right tower oxygen outlet valve 44, a second right tower purge valve 45, and a right tower inlet valve 46. The fourth valve assembly is connected to the booster compressor 31 and the 99.5% oxygen storage tank 32 by the seventeenth pipeline 52 and the eighteenth pipeline 53, respectively. The booster compressor 31 and the 99.5% oxygen storage tank 32 are connected by the twentieth pipeline 55. The outlet end of the 99.5% oxygen storage tank is provided with a nineteenth pipeline 54.

[0020] In this embodiment, pressure swing adsorption (for producing 93% oxygen) is performed as follows: Air compressor 1 compresses the air, which is then dried by refrigerated dryer 2 and enters air buffer tank 3 for buffering and pressure stabilization. The air then enters 93% oxygen adsorption tower A or B (the two towers operate alternately). Under the action of molecular sieves inside the tower, impurity gases are adsorbed, producing 93% oxygen. This oxygen is then transported through left tower oxygen outlet valve 1 or right tower oxygen outlet valve 1, via fifth pipeline 21 or sixth pipeline 22 to 93% oxygen storage tank 7 for storage, and then via ninth pipeline 25 to general wards for patients.

[0021] In this embodiment, secondary pressure swing adsorption (producing 99.5% oxygen): Part of the gas after primary pressure swing adsorption enters either 99.5% oxygen adsorption tower A or B (the two towers operate alternately) via the tenth pipeline 26 and the twenty-first pipeline 56. Under the action of molecular sieves within the tower, oxygen is adsorbed, and argon gas is discharged via the thirteenth pipeline 48 or the fourteenth pipeline 49, further purifying the oxygen to a concentration of 99.5%. Under the action of the booster compressor 31, the oxygen is transported via the second left tower oxygen outlet valve 43 or the second right tower oxygen outlet valve 44, through the seventeenth pipeline 52 and the twentieth pipeline 55, to the 99.5% oxygen storage tank 32 for storage, and then via the nineteenth pipeline 54 to operating rooms, ICUs, and other locations for patient use.

[0022] In this embodiment, the purge gas is recycled and reused: the purge gas generated during the secondary purification process, the low-purity purge gas in the early stage of purge enters the first regeneration tank 6 through the eleventh pipeline 27 and is used for purging the adsorption tower of the first pressure swing adsorption; the high-purity purge gas in the later stage of purge enters the second regeneration tank 28 through the twelfth pipeline 47 and is used for the initial gas intake of the adsorption tower in the secondary adsorption process, so as to realize the rational classification and recycling of purge gas and improve energy utilization.

[0023] In this embodiment, the device is multifunctional: it can simultaneously provide oxygen at two concentrations, 93% and 99.5%, to meet the diverse oxygen concentration requirements of different departments in hospitals and other locations, thus improving the applicability and practicality of the equipment.

[0024] In this embodiment, advanced molecular sieve pressure swing adsorption technology and gas recovery and utilization process are adopted to rationally classify and collect the purge gas in the secondary purification process and reuse it in different adsorption processes. This effectively improves the oxygen recovery and utilization rate, reduces energy consumption, saves production costs, and achieves the green production goal of energy saving and consumption reduction.

[0025] In this embodiment, the equipment operates stably and reliably, and the control system operates independently. The working status of each part can be flexibly adjusted according to different needs. It is easy to operate and maintain, providing a stable, efficient, and economical oxygen supply solution for hospitals and other places, with significant economic and social benefits.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen, comprising a 93% oxygen generation system and a 99.5% oxygen generation system, characterized in that: The oxygen outlet of the 93% oxygen generation system is connected to the oxygen inlet of the 99.5% oxygen generation system. The 93% oxygen generation system includes an air compressor (1), a refrigerated dryer (2), an air buffer tank (3), a 93% oxygen adsorption tower A (4), a 93% oxygen adsorption tower B (5), a first regeneration tank (6), and a 93% oxygen storage tank (7). The air outlet of the air compressor (1) is connected to the air inlet of the refrigerated dryer (2), and the air outlet of the refrigerated dryer (2) is connected to the air inlet of the air buffer tank (3). The air outlet of the air buffer tank (3) is provided with a first pipeline (17), and the air inlets of the 93% oxygen adsorption tower A (4) and the 93% oxygen adsorption tower B (5) are respectively provided with a second pipeline (18) and a third pipeline (19). The first pipeline (17), the second pipeline (18) and the third pipeline (19) are connected by a first valve assembly. The outlet ends of the 93% oxygen adsorption tower A (4), the 93% oxygen adsorption tower B (5) and the first regeneration tank (6) are respectively provided with a fifth pipeline (21), a sixth pipeline (22) and an eighth pipeline (24). The fifth pipeline (21), the sixth pipeline (22) and the eighth pipeline (24) are connected by a second valve assembly. The second valve assembly is connected to the 93% oxygen storage tank (7) through a seventh pipeline (23). The outlet end of the 93% oxygen storage tank (7) is provided with a ninth pipeline (25). The 99.5% oxygen generation system includes a second regeneration tank (28), a 99.5% oxygen adsorption tower A (29), a 99.5% oxygen adsorption tower B (30), a booster compressor (31), and a 99.5% oxygen storage tank (32). The second regeneration tank (28) is equipped with a twelfth pipeline (47) and a twenty-first pipeline (56) at its inlet and outlet ends, respectively. The 99.5% oxygen adsorption tower A (29) and the 99.5% oxygen adsorption tower B (30) are equipped with a thirteenth pipeline (48), a fourteenth pipeline (49), a fifteenth pipeline (50), and a thirteenth pipeline (56) at their inlet and outlet ends, respectively. The sixteenth pipeline (51), the thirteenth pipeline (48) and the fourteenth pipeline (49) are connected by the third valve assembly, the fifteenth pipeline (50) and the sixteenth pipeline (51) are connected by the fourth valve assembly, the fourth valve assembly is connected to the booster (31) and the 99.5% oxygen storage tank (32) by the seventeenth pipeline (52) and the eighteenth pipeline (53) respectively, the booster (31) and the 99.5% oxygen storage tank (32) are connected by the twentieth pipeline (55), and the outlet end of the 99.5% oxygen storage tank (32) is provided with the nineteenth pipeline (54).

2. The high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen according to claim 1, characterized in that: The first valve assembly includes a first left tower inlet valve (8), a first right tower inlet valve (9), a left tower nitrogen venting valve (10), and a right tower nitrogen venting valve (11).

3. The high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen according to claim 1, characterized in that: The outlet ends of the left tower nitrogen venting valve (10) and the right tower nitrogen venting valve (11) are connected through the fourth pipeline (20).

4. The high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen according to claim 1, characterized in that: The second valve assembly includes a pressure equalization valve (12), a first left tower purge valve (13), a first right tower purge valve (14), a first left tower oxygen outlet valve (15), and a first right tower oxygen outlet valve (16).

5. A high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen, as described in claim 1, is characterized in that: The third valve assembly includes a second left tower equalizing valve (33), a second left tower regeneration valve (34), a first left tower regeneration valve (35), a left tower argon discharge valve (36), a right tower argon discharge valve (37), a first right tower regeneration valve (38), a second right tower regeneration valve (39), and a second right tower equalizing valve (40).

6. The high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen according to claim 1, characterized in that: The fourth valve assembly includes a second left tower inlet valve (41), a second left tower purge valve (42), a second left tower oxygen outlet valve (43), a second right tower oxygen outlet valve (44), a second right tower purge valve (45), and a right tower inlet valve (46).

7. The high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen according to claim 1, characterized in that: The third valve assembly is connected to the first regeneration tank (6) via the eleventh pipeline (27).

8. A high-efficiency molecular sieve oxygen generator capable of simultaneously providing 93% oxygen and 99.5% oxygen according to claim 1, characterized in that: The oxygen outlet of the 93% oxygen storage tank (7) is connected to the second regeneration tank (28) via the tenth pipeline (26).

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