A nitrogen-rich gas recovery and reuse system for a pressure swing adsorption nitrogen generator

Abstract

This utility model discloses a nitrogen-rich gas recovery and reuse system for a pressure swing adsorption (PSA) nitrogen generator, comprising: a nitrogen-rich gas collection device for collecting nitrogen-rich gas generated during the nitrogen generation process; a gas compressor connected to the nitrogen-rich gas collection device for compressing the collected nitrogen-rich gas and increasing its pressure; an impurity filter assembly connected to the gas compressor for removing impurities from the nitrogen-rich gas; a heat exchanger connected to the impurity filter assembly for preheating the nitrogen-rich gas to be compressed; and a gas storage tank connected to the heat exchanger for storing the processed nitrogen-rich gas. This system provides more comprehensive and efficient collection of nitrogen-rich gas, reduces gas loss, improves resource utilization, and employs multi-stage filtration and adsorption treatment to effectively remove various impurities from the nitrogen-rich gas, ensuring the purity and quality of the recovered gas and meeting the needs of different gas-using equipment.

Description

Technical Field

[0001] This utility model relates to the field of pressure swing adsorption (PSA) nitrogen generator technology, and in particular to a nitrogen-rich gas recovery and reuse system for a PSA nitrogen generator. Background Technology

[0002] Traditional systems lack specific design for collecting nitrogen-rich gas, and their unreasonable gas flow paths result in a large amount of nitrogen-rich gas not being effectively recovered, leading to resource waste. Furthermore, nitrogen-rich gas often contains impurities such as moisture, oxygen, and carbon dioxide, which existing systems struggle to completely remove, affecting the quality and effectiveness of the recovered gas. Based on this, a nitrogen-rich gas recovery and reuse system for a pressure swing adsorption (PSA) nitrogen generator was designed. Utility Model Content

[0003] To overcome at least one of the defects described in the prior art, this invention provides a nitrogen-rich gas recovery and reuse system for a pressure swing adsorption (PSA) nitrogen generator. This system collects nitrogen-rich gas more comprehensively and efficiently, reduces gas loss, improves resource utilization, and employs multi-stage filtration and adsorption treatment to effectively remove various impurities from the nitrogen-rich gas, ensuring the purity and quality of the recovered gas and meeting the needs of different gas-using equipment.

[0004] The technical solution adopted by this utility model to solve its problem is:

[0005] A nitrogen-rich gas recovery and reuse system for a pressure swing adsorption (PSA) nitrogen generator includes: a nitrogen-rich gas collection device for collecting nitrogen-rich gas generated during the nitrogen generation process; a gas compressor connected to the nitrogen-rich gas collection device for compressing the collected nitrogen-rich gas and increasing its pressure; an impurity filter assembly connected to the gas compressor for removing impurities from the nitrogen-rich gas; a heat exchanger connected to the impurity filter assembly for preheating the nitrogen-rich gas to be compressed; and a gas storage tank connected to the heat exchanger for storing the processed nitrogen-rich gas.

[0006] By adopting the above scheme, the nitrogen-rich gas collection device, gas compressor, impurity filter assembly, heat exchanger and gas storage tank are connected in sequence to form a complete nitrogen-rich gas recovery and reuse system. This ensures that the entire process of nitrogen-rich gas collection and storage is carried out in an orderly manner, improves the overall efficiency and stability of the system, effectively increases the recovery rate of nitrogen-rich gas, and reduces resource waste.

[0007] Furthermore, the nitrogen-rich gas collection device is connected to the inlet of the gas compressor via a first gas delivery pipe.

[0008] By adopting the above scheme, it is ensured that nitrogen-rich gas can smoothly enter the gas compressor for compression.

[0009] Furthermore, the impurity filtration assembly includes a pre-filter, an adsorption tower, and a dryer connected in sequence via a second gas delivery pipeline.

[0010] By adopting the above scheme, and connecting them sequentially through the second gas delivery pipeline to form a multi-stage filtration system, impurities in nitrogen-rich gas can be removed more effectively, thereby improving the quality of the recovered gas.

[0011] Furthermore, the gas compressor is a multi-stage centrifugal compressor, and the outlet of the gas compressor is connected to the pre-filter through a third gas delivery pipeline.

[0012] By adopting the above scheme, the gas compressor adopts a multi-stage centrifugal compressor, which has the advantages of high compression efficiency and stable operation. The gas compressor outlet is connected to the pre-filter through a third gas delivery pipeline to ensure that the compressed nitrogen-rich gas can enter the impurity filtration component for purification in a timely manner.

[0013] Furthermore, the adsorption tower is filled with molecular sieves, and the dryer uses silica gel as a desiccant.

[0014] By adopting the above scheme, the adsorption tower is filled with molecular sieves. Molecular sieves have selective adsorption characteristics and can efficiently adsorb impurities such as moisture, oxygen, and carbon dioxide in nitrogen-rich gas, thereby further improving the quality of the recovered gas. The dryer uses silica gel desiccant, which has the advantages of strong hygroscopicity and good stability, and can effectively remove moisture from nitrogen-rich gas to ensure the dryness of the gas.

[0015] Furthermore, the heat exchanger is a plate heat exchanger.

[0016] By adopting the above scheme, it has the advantages of high heat transfer efficiency and compact structure, which can effectively preheat the nitrogen-rich gas to be compressed, improve the efficiency of the gas compressor, and reduce energy consumption.

[0017] Furthermore, the dryer is connected to the heat exchanger via a fourth gas delivery pipe.

[0018] By adopting the above scheme, the dryer and the heat exchanger are connected through a fourth gas delivery pipeline, ensuring that the dried nitrogen-rich gas can smoothly enter the heat exchanger for preheating, thus ensuring the continuity of the entire gas processing process.

[0019] Furthermore, the first gas delivery pipeline, the second gas delivery pipeline, the third gas delivery pipeline, and the fourth gas delivery pipeline are made of stainless steel.

[0020] By adopting the above solution, stainless steel pipes have advantages such as corrosion resistance, high strength, and long service life, which can ensure the safety and stability of gas during transportation and reduce the occurrence of problems such as pipeline leakage. Attached Figure Description

[0021] Figure 1 This is a structural block diagram of an embodiment of the present utility model;

[0022] The meanings of the reference numerals in the attached drawings are as follows: 1. Nitrogen-rich gas collection device; 2. Gas compressor; 3. Impurity filtration assembly; 31. Pre-filter; 32. Adsorption tower; 33. Dryer; 4. Heat exchanger; 5. Gas storage tank; 6. First gas delivery pipeline; 7. Second gas delivery pipeline; 8. Third gas delivery pipeline; 9. Fourth gas delivery pipeline; 10. Fifth gas delivery pipeline. Detailed Implementation

[0023] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0024] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0027] See Figure 1This utility model discloses a nitrogen-rich gas recovery and reuse system for a pressure swing adsorption (PSA) nitrogen generator: it includes a nitrogen-rich gas collection device 1, a gas compressor 2, an impurity filter assembly 3, a heat exchanger 4, and a gas storage tank 5. The nitrogen-rich gas collection device 1 is composed of gas collection hoods distributed throughout the nitrogen generator, used to collect nitrogen-rich gas generated during the nitrogen generation process. The gas compressor 2 is connected to the nitrogen-rich gas collection device 1, used to compress the collected nitrogen-rich gas and increase its pressure. The impurity filter assembly 3 is connected to the gas compressor 2, used to remove impurities from the nitrogen-rich gas. The heat exchanger 4 is connected to the impurity filter assembly 3, used to preheat the nitrogen-rich gas to be compressed. The gas storage tank 5 is connected to the heat exchanger 4, used to store the processed nitrogen-rich gas. The nitrogen-rich gas collection device 1, gas compressor 2, impurity filter assembly 3, heat exchanger 4, and gas storage tank 5 are connected in sequence to form a complete nitrogen-rich gas recovery and reuse system. This ensures that the entire process of nitrogen-rich gas collection and storage is carried out in an orderly manner, improves the overall efficiency and stability of the system, effectively increases the recovery rate of nitrogen-rich gas, and reduces resource waste.

[0028] The nitrogen-rich gas collection device 1 is connected to the inlet of the gas compressor 2 through the first gas delivery pipe 6, ensuring that the nitrogen-rich gas can smoothly enter the gas compressor 2 for compression.

[0029] The impurity filtration assembly 3 includes a pre-filter 31, an adsorption tower 32, and a dryer 33, which are connected in sequence through the second gas delivery pipe 7 to form a multi-stage filtration system. This system can more effectively remove impurities from nitrogen-rich gas and improve the quality of the recovered gas.

[0030] The gas compressor 2 is a multi-stage centrifugal compressor. The outlet of the gas compressor 2 is connected to the pre-filter 31 through a third gas delivery pipe 8. The gas compressor 2 is a multi-stage centrifugal compressor, which has the advantages of high compression efficiency and stable operation. The gas compressor 2 is connected to the pre-filter 31 through a third gas delivery pipe 8 to ensure that the compressed nitrogen-rich gas can enter the impurity filter assembly 3 for purification in a timely manner.

[0031] The adsorption tower 32 is filled with molecular sieves, and the dryer 33 uses silica gel desiccant. Molecular sieves have selective adsorption properties, which can efficiently adsorb impurities such as moisture, oxygen, and carbon dioxide in nitrogen-rich gas, thereby further improving the quality of the recovered gas. Silica gel desiccant has the advantages of strong hygroscopicity and good stability, which can effectively remove moisture from nitrogen-rich gas and ensure the dryness of the gas.

[0032] The heat exchanger 4 is a plate heat exchanger, which has the advantages of high heat transfer efficiency and compact structure. It can effectively preheat the nitrogen-rich gas to be compressed, improve the efficiency of the gas compressor 2, and reduce energy consumption. The heat exchanger 4 is connected to the gas storage tank 5 through a fifth gas delivery pipeline 10.

[0033] The dryer 33 is connected to the heat exchanger 4 via a fourth gas delivery pipe 9, ensuring that the dried nitrogen-rich gas can smoothly enter the heat exchanger 4 for preheating, thus guaranteeing the continuity of the entire gas processing flow.

[0034] Among them, the first gas transmission pipeline 6, the second gas transmission pipeline 7, the third gas transmission pipeline 8 and the fourth gas transmission pipeline 9 are made of stainless steel. Stainless steel pipelines have the advantages of corrosion resistance, high strength and long service life, which can ensure the safety and stability of gas during the transmission process and reduce the occurrence of pipeline leakage and other problems.

[0035] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A nitrogen-rich gas recovery and reuse system for a pressure swing adsorption (PSA) nitrogen generator, characterized in that, include: A nitrogen-rich gas collection device, wherein the nitrogen-rich gas collection device is used to collect nitrogen-rich gas generated during the nitrogen production process; A gas compressor, connected to the nitrogen-rich gas collection device, is used to compress the collected nitrogen-rich gas and increase its pressure. An impurity filtration assembly, connected to the gas compressor, is used to remove impurities from nitrogen-rich gas. A heat exchanger, connected to the impurity filter assembly, is used to preheat the nitrogen-rich gas to be compressed; A gas storage tank, which is connected to the heat exchanger, is used to store the treated nitrogen-rich gas.

2. The nitrogen-rich gas recovery and reuse system of a pressure swing adsorption nitrogen generator according to claim 1, characterized in that, The nitrogen-rich gas collection device is connected to the inlet of the gas compressor via a first gas delivery pipeline.

3. The nitrogen-rich gas recovery and reuse system of a pressure swing adsorption nitrogen generator according to claim 2, characterized in that, The impurity filtration assembly includes a pre-filter, an adsorption tower, and a dryer connected in sequence via a second gas delivery pipeline.

4. The nitrogen-rich gas recovery and reuse system of a pressure swing adsorption nitrogen generator according to claim 3, characterized in that, The gas compressor is a multi-stage centrifugal compressor, and the gas outlet of the gas compressor is connected to the pre-filter through a third gas delivery pipeline.

5. A nitrogen-rich gas recovery and reuse system for a pressure swing adsorption nitrogen generator according to claim 4, characterized in that, The adsorption tower is filled with molecular sieves, and the dryer uses silica gel as a desiccant.

6. A nitrogen-rich gas recovery and reuse system for a pressure swing adsorption nitrogen generator according to claim 5, characterized in that, The heat exchanger is a plate heat exchanger.

7. A nitrogen-rich gas recovery and reuse system for a pressure swing adsorption nitrogen generator according to claim 6, characterized in that, The dryer and the heat exchanger are connected via a fourth gas delivery pipeline.

8. A nitrogen-rich gas recovery and reuse system for a pressure swing adsorption nitrogen generator according to claim 7, characterized in that, The first gas delivery pipeline, the second gas delivery pipeline, the third gas delivery pipeline and the fourth gas delivery pipeline are made of stainless steel.

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