Oxygen enrichment machine device based on PSA (Pressure Swing Adsorption) oxygen production process

Abstract

The utility model discloses an oxygen enrichment machine device based on PSA oxygen production technology, which relates to the gas separation technology, and comprises a gas inlet pipeline, a pressure swing adsorption oxygen production device and an oxygen enrichment blending integration module, the tail end of the gas inlet pipeline is connected and communicated with the pressure swing adsorption oxygen production device, the waste gas outlet of the pressure swing adsorption oxygen production device is connected and communicated with an exhaust pipeline, and the exhaust pipeline is communicated with the pressure swing adsorption oxygen production device. An oxygen-enriched outlet of the pressure swing adsorption oxygen production device is connected and communicated with an oxygen-enriched pipeline; the oxygen-enriched allocation integration module comprises a transmission and distribution pipeline, an air inlet in one end of the transmission and distribution pipeline, an air outlet in the other end of the transmission and distribution pipeline, and a first regulation and control valve, a mixing valve, an air blower and a second regulation and control valve which are sequentially arranged between the air inlet and the air outlet, and the tail end of the oxygen-enriched pipeline is connected and communicated with the mixing valve. According to the device, more efficient and more flexible oxygen-enriched gas production is realized based on a PSA (Pressure Swing Adsorption) oxygen production process through a linkage allocation technology, so that specific requirements of different industries and users are better met.

Description

Technical Field

[0001] This utility model relates to the field of gas separation technology, specifically to an oxygen enrichment device based on PSA oxygen production process. Background Technology

[0002] PSA (Pressure Swing Adsorption) oxygen generation technology is a process that uses pressure swing adsorption to separate oxygen from the air. Its principle is based on the adsorption and desorption properties of molecular sieves, separating high-purity oxygen from the air through a process of pressure adsorption and depressurization desorption. PSA oxygen generators are widely used in many fields due to their high efficiency, economy, environmental friendliness, and ease of maintenance.

[0003] However, the traditional PSA oxygen production process has a relatively simple structural design, which makes it lack sufficient flexibility and adjustability in key performance indicators such as oxygen concentration, output pressure, and flow rate. This prevents timely adjustments and optimizations based on actual production conditions or specific user needs. This limitation leads to low energy efficiency or resource waste when high-concentration oxygen-enriched combustion is not required. Summary of the Invention

[0004] To overcome the shortcomings of at least one of the prior art, this utility model provides an oxygen-enriching device based on PSA oxygen production technology, comprising an inlet pipeline, a pressure swing adsorption (PSA) oxygen generator, and an oxygen enrichment and distribution integrated module. The end of the inlet pipeline is connected to the PSA oxygen generator, the exhaust outlet of the PSA oxygen generator is connected to an exhaust pipeline, and the oxygen enrichment outlet of the PSA oxygen generator is connected to an oxygen enrichment pipeline. The oxygen enrichment and distribution integrated module includes a distribution pipeline, an inlet at one end, an outlet at the other end, and a first regulating valve, a mixing valve, a blower, and a second regulating valve sequentially arranged between the inlet and outlet. The end of the oxygen enrichment pipeline is connected to the mixing valve. By setting up the oxygen enrichment and distribution integrated module to adjust the oxygen enrichment concentration of the gas produced by the PSA oxygen generator, the problem of the lack of adjustability in oxygen concentration in the PSA oxygen production process is solved.

[0005] As an improved solution, the intake pipe is equipped with a first air filter and an air compressor, the first air filter being used to filter oil and dust.

[0006] As an improved solution, the mixing valve is configured as a three-way mixing valve, and the oxygen enrichment and blending integrated module is connected to the oxygen enrichment pipeline through the mixing valve.

[0007] As an improved solution, the oxygen enrichment and blending module also includes a second air filter, which is connected between the first control valve and the mixing valve via a distribution pipeline.

[0008] As an improvement, a check valve is installed on the oxygen-enriched pipeline.

[0009] As an improved solution, the electrical input terminal of the blower is electrically connected to a frequency converter via a wired connection.

[0010] As an improved solution, the distribution pipeline corresponding to the rear end of the second control valve is equipped with any one or more of a gas flow meter, a pressure meter, and a concentration meter.

[0011] As an improved solution, the first control valve, the second control valve, and the frequency converter are all electrically connected to the PLC controller. For example, they can be connected to the PLC controller via a wired connection.

[0012] As an improved solution, the pressure swing adsorption oxygen generator includes two adsorption towers and a regulating valve between the adsorption towers.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model, based on the PSA oxygen production process and through coordinated blending technology, achieves more efficient and flexible production of oxygen-enriched gas, thereby better meeting the specific needs of different industries and users. Specifically, the first regulating valve adjusts its opening and works in conjunction with the blower to control the intake air flow rate, ensuring a suitable oxygen enrichment concentration. The blower pressurizes the uniformly mixed oxygen-enriched gas, producing oxygen-enriched gas with a concentration of 25%–40% and a pressure of 0–80 kPa. The second regulating valve further fine-tunes the gas flow rate and pressure to ensure stable output oxygen-enriched gas quality.

[0015] 2. If the user only needs high-concentration oxygen-enriched gas, the first control valve can be simply closed, and then the prepared oxygen-enriched gas can be directly extracted and used using a blower. The device has high overall adjustability and is more flexible in use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the oxygen-enriching machine device based on the PSA oxygen production process of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the PLC controller system of this utility model.

[0019] The attached diagram is labeled as follows: 101, intake pipe; 102, exhaust pipe; 103, oxygen enrichment pipe; 104, distribution pipe; 2, first air filter; 3, air compressor; 4, check valve; 5, first regulating valve; 6, second air filter; 7, mixing valve; 8, blower; 9, second regulating valve; 10, pressure swing adsorption oxygen generator; 11, frequency converter. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of this invention.

[0021] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Part 1: Structural Layout Description of the Device

[0023] The specific structure of the oxygen enrichment unit based on PSA oxygen generation technology is as follows: Figure 1 As shown, the device includes an intake pipe 101, a pressure swing adsorption (PSA) oxygen generator 10, and an oxygen enrichment and distribution integrated module. The end of the intake pipe 101 is connected to the PSA oxygen generator 10. The exhaust outlet of the PSA oxygen generator 10 is connected to an exhaust pipe 102, and the outlet of the exhaust pipe 102 is directly open to the atmosphere. The oxygen enrichment outlet of the PSA oxygen generator 10 is connected to an oxygen enrichment pipe 103.

[0024] The oxygen-enriched distribution module includes a distribution pipeline 104, an air inlet at one end of the distribution pipeline 104, an air outlet at the other end, and a first regulating valve 5, a mixing valve 7, a blower 8, and a second regulating valve 9 arranged sequentially between the air inlet and the air outlet; the end of the oxygen-enriched pipeline 103 is connected to the mixing valve 7.

[0025] Furthermore, the intake pipe 101 is equipped with a first air filter 2 and an air compressor 3. The end of the intake pipe 101 is connected to the pressure swing adsorption oxygen generator 10, which can continuously provide raw material air to the pressure swing adsorption oxygen generator 10 for the oxygen generation process.

[0026] The mixing valve 7 is a three-way mixing valve. The oxygen enrichment and blending module is connected to the oxygen enrichment pipeline 103 through the mixing valve 7. The oxygen enrichment and blending module also includes a second air filter 6, which is connected between the first control valve 5 and the mixing valve 7 through the distribution pipeline 104.

[0027] Furthermore, a check valve 4 is installed on the oxygen-enriched pipeline 103 to prevent gas backflow.

[0028] The blower 8 is electrically connected to a frequency converter 11 via a wired connection at its electrical input terminal. The first regulating valve 5 is mainly used to adjust the flow rate of the input air, thereby controlling the oxygen enrichment concentration. Under the coordinated action of the frequency converter 11, the blower 8 regulates the air flow rate and pressure. By adjusting the opening of the second regulating valve 9 at the downstream end, the flow rate of the output oxygen-enriched gas can be precisely controlled. In actual operation, any one or more of a gas flow meter, pressure meter, and concentration meter can be installed on the distribution pipeline 104 corresponding to the downstream end of the second regulating valve 9 to facilitate timely acquisition of gas state parameters and targeted parameter adjustments.

[0029] In practical applications, one or more pressure swing adsorption (PSA) oxygen generators 10 can be configured in parallel to ensure the continuity and stability of oxygen supply. The oxygen generation principle of the PSA oxygen generator 10 is based on the selective adsorption of molecular sieves in tower A and tower B and the change of pressure to achieve the separation and enrichment of oxygen. By continuously switching the operating states of the two adsorption towers, the purpose of continuous production of high-quality oxygen can be achieved. Since this technology is a conventional technology, it will not be described in detail here.

[0030] In this invention, each regulating valve is used to control or shut off the airflow; the pressure swing adsorption oxygen generator 10 preferably adopts a high-altitude diffusion oxygen generator of model JO-60L-01T0, with an oxygen flow rate of 60L / min and an oxygen pressure less than or equal to 60kPa; the air compressor 3 adopts a miniature screw compressor. Figure 2 The first control valve 5, the second control valve 9, and the frequency converter 11 are all integrated with an external PLC controller via wired connection. The PLC controller can automatically control the above components according to preset parameter values.

[0031] Part Two: Instructions for Device Operation

[0032] The air entering the intake pipe 101 first passes through the first air filter 2 to filter oil and dust, and then is pressurized by the air compressor 3 before being sent to the pressure swing adsorption (PSA) oxygen generator 10 for the PSA oxygen generation process. In actual operation, using the aforementioned PSA oxygen generator 10 with its internal valves fully open and no pressure, the oxygen-enriched gas flow rate is 4.562 Nm³. 3 The oxygen-enriched gas produced at a concentration of 76.76% per hour enters the oxygen-enriched pipeline 103 and then flows into the oxygen-enriched blending module after passing through the check valve 4. The waste gas desorbed in the pressure swing adsorption oxygen generator 10 is discharged into the atmosphere through the exhaust pipeline 102.

[0033] In the oxygen-enriched gas distribution module, air enters the distribution pipeline 104 via the first regulating valve 5. The first regulating valve 5, by adjusting its own opening and working in conjunction with the downstream blower 8, regulates the airflow. Next, the air passes through the first air filter 2 to complete the oil and dust filtration process, and then enters the mixing valve 7 to mix with oxygen-enriched gas, thereby regulating the concentration of the mixed oxygen-enriched gas. Subsequently, the uniformly mixed oxygen-enriched gas is moderately pressurized by the blower 8, ultimately obtaining a finished oxygen-enriched gas with a concentration of 25%–40% and a pressure range of 0–80 kPa. Finally, the flow rate and pressure of the oxygen-enriched gas are finely adjusted by the second regulating valve 9 before being output, ensuring the stability of the output oxygen-enriched gas quality. Simultaneously, when the user only needs high-concentration oxygen-enriched gas, simply closing the first regulating valve 5 allows the blower 8 to directly extract the produced oxygen-enriched gas for use.

[0034] Furthermore, it should be noted that the shapes and names of the parts and components described in the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. An oxygen enrichment device based on PSA oxygen production technology, characterized in that, It includes an air intake pipe, a pressure swing adsorption (PSA) oxygen generator, and an oxygen enrichment and blending module. The end of the air intake pipe is connected to the PSA oxygen generator, the exhaust outlet of the PSA oxygen generator is connected to an exhaust pipe, and the oxygen enrichment outlet of the PSA oxygen generator is connected to an oxygen enrichment pipe. The oxygen-enriched distribution module includes a distribution pipeline, an air inlet at one end of the distribution pipeline, an air outlet at the other end, and a first control valve, a mixing valve, a blower, and a second control valve arranged sequentially between the air inlet and the air outlet. The end of the oxygen-enriched pipeline is connected to the mixing valve.

2. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, The intake pipe is equipped with a first air filter and an air compressor.

3. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, The mixing valve is a three-way mixing valve, and the oxygen enrichment and blending module is connected to the oxygen enrichment pipeline through the mixing valve.

4. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, The oxygen-enriched blending module also includes a second air filter, which is connected between the first control valve and the mixing valve via a distribution pipeline.

5. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, A check valve is installed on the oxygen-enriched pipeline.

6. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, The blower's electrical input terminal is electrically connected to a frequency converter via a wired connection.

7. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, The distribution pipeline corresponding to the rear end of the second control valve is equipped with any one or more of the following: a gas flow detector, a pressure detector, and a concentration detector.

8. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, The first control valve, the second control valve, and the frequency converter are all electrically connected to the PLC controller.

9. The oxygen enrichment device based on PSA oxygen production process according to claim 1, characterized in that, The pressure swing adsorption oxygen generator includes two adsorption towers and a regulating valve between the adsorption towers.

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