Gas treatment device of air compressor

Abstract

The utility model relates to the technical field of compressed air, in particular to a gas treatment device for an air compressor, which is used for the air compressor and comprises a plurality of drying towers, an oil-water cooler, a filter and a power generation component. A first output end of an air inlet pipeline of the air compressor is connected with the oil-water cooler through a pipeline, a first output end of the oil-water cooler is connected with the drying towers through pipelines, a second output end of the oil-water cooler is connected with the filter through a pipeline, and a second output end of the air inlet pipeline of the air compressor is connected with the drying towers through pipelines. And the output ends of the drying towers are connected with a power generation assembly through an emptying pipeline. The utility model aims to utilize the exhaust gas of the air compressor system to generate power, realize the resource utilization of the exhaust gas and further improve the overall efficiency of the air compressor system.

Description

Technical Field

[0001] The utility model relates to the technical field of compressed air, and particularly to an air compressor gas treatment device. Background Art

[0002] During the operation of the air compression system, two types of venting situations usually occur. The first is during the production of electrolytic aluminum. As the operation time of the electrolytic cell increases, the gas demand of the electrolytic cell decreases. At this time, the air compressor needs to vent the excess gas to maintain a stable working condition to avoid the occurrence of air compressor surge phenomenon. The second is that according to the requirements of the gas production process, a part of the dry gas needs to be used to regenerate the adsorbent after water absorption, and the treated gas is discharged through the pipeline.

[0003] Currently, large centrifugal air compressors usually directly discharge the excess gas, which is not conducive to the efficient operation of the air compressor; on the other hand, the technical solution of the dryer with no loss and no emission can avoid gas discharge, but it will increase the loss of additional energy such as regeneration gas cooling and pressurization; in order to achieve the goal of waste gas reuse and improve the operation efficiency of the air compressor, we propose an air compressor gas treatment device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an air compressor gas treatment device to generate electricity by using the waste gas discharged from the air compressor system, realize the resource utilization of waste gas, and further improve the overall efficiency of the air compressor system.

[0005] To achieve the above purpose, the utility model provides an air compressor gas treatment device for an air compressor. The gas treatment device includes a drying tower, an oil-water cooler, a filter, and a power generation component. There are multiple drying towers, and the multiple drying towers are connected in parallel through pipelines. The first output end of the air compressor inlet pipeline is connected to the oil-water cooler through a pipeline. The first output end of the oil-water cooler is connected to multiple groups of drying towers through a pipeline. The second output end of the oil-water cooling is connected to the filter through a pipeline. The second output end of the air compressor inlet pipeline is connected to multiple drying towers through a pipeline. The output ends of the multiple drying towers are connected to the power generation component through a venting pipeline.

[0006] Further, the tops of the multiple drying towers are successively provided with a first pipeline, a second pipeline, and a third pipeline. The first pipeline, the second pipeline, and the third pipeline are connected in parallel. The second output end of the air compressor is connected to the first pipeline, and the output end of the third pipeline is provided with an air outlet pipeline.

[0007] Furthermore, the bottoms of multiple drying towers are successively provided with a fourth pipeline, a fifth pipeline, and a sixth pipeline. The fourth pipeline, the fifth pipeline, and the sixth pipeline are connected in parallel. The first output end of the oil-water cooler is connected to the fourth pipeline. The output end of the fifth pipeline is connected to the vent pipeline. The output end of the sixth pipeline is also connected to the filter.

[0008] Furthermore, multiple drying towers include a first drying tower and a second drying tower.

[0009] Furthermore, it also includes a first normally open valve, a second normally open valve, a third normally open valve, a fourth normally open valve, and a fifth normally open valve. The first normally open valve and the second normally open valve are arranged on the sixth pipeline. The third normally open valve and the fourth normally open valve are arranged on the third pipeline. The fifth normally open valve is arranged at the input end of the oil-water cooler.

[0010] Furthermore, it also includes a first normally closed valve, a second normally closed valve, a third normally closed valve, a fourth normally closed valve, a fifth normally closed valve, a sixth normally closed valve, and a seventh normally closed valve. The first normally closed valve and the second normally closed valve are arranged on the first pipeline. The third normally closed valve and the fourth normally closed valve are arranged on the fourth pipeline. The fifth normally closed valve and the sixth normally closed valve are arranged on the fifth pipeline. The seventh normally closed valve is arranged on the second pipeline.

[0011] Furthermore, the power generation assembly includes a centrifugal fan blade and a three-phase permanent magnet motor. The centrifugal fan blade is arranged at the output end of the vent pipeline. The output end of the centrifugal fan blade is electrically connected to the three-phase permanent magnet generator.

[0012] Furthermore, the power generation assembly also includes a rectifier and a busbar box. The input end of the rectifier is electrically connected to the three-phase permanent magnet generator, and the output end of the rectifier is electrically connected to the busbar box.

[0013] Furthermore, the power generation assembly also includes a DC step-up and step-down device. The input end of the DC step-up and step-down device is electrically connected to the output end of the busbar box.

[0014] Furthermore, the power generation assembly also includes an inverter, a filter, a transformer, and a grid connection cabinet that are electrically connected in sequence. The input end of the inverter is electrically connected to the DC step-up and step-down device, and the output end of the inverter is electrically connected to the grid connection cabinet through the filter and the transformer.

[0015] The beneficial effects of the present utility model include:

[0016] The air compressor gas treatment device provided by the utility model can realize the recycling of gas between different towers through the parallel connection between multiple drying towers, thereby improving the drying efficiency and reducing energy consumption. By setting a power generation component on the vent pipeline, waste gas recycling power generation is realized, and the exhausted gas is guided to the power generation component for power generation, which can not only reduce the emission of waste gas, but also improve the gas utilization efficiency of the air compressor. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments of the present utility model will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of the air compressor gas treatment device provided by the embodiment of the present utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the power generation component provided by the embodiment of the present utility model;

[0020] Reference Signs: 100 - First drying tower, 110 - First pipeline, 111 - First normally closed valve, 112 - Second normally closed valve, 120 - Second pipeline, 121 - Seventh normally closed valve, 130 - Third pipeline, 131 - Third normally open valve, 132 - Fourth normally open valve, 200 - Second drying tower, 210 - Fourth pipeline, 211 - Third normally closed valve, 212 - Fourth normally closed valve, 220 - Fifth pipeline, 221 - Fifth normally closed valve, 222 - Sixth normally closed valve, 230 - Sixth pipeline, 231 - First normally open valve, 232 - Second normally open valve, 300 - Oil-water cooler, 310 - Fifth normally open valve, 400 - Filter, 500 - Power generation component, 510 - Centrifugal fan blade, 520 - Three-phase permanent magnet motor, 530 - Rectifier, 540 - Busbar box, 550 - DC step-up and step-down device, 560 - Inverter, 570 - Filter, 580 - Transformer, 590 - Grid connection cabinet, 600 - Vent pipeline, 700 - Outlet pipeline, 800 - Air compressor inlet pipeline. Detailed Embodiments

[0021] The technical solutions in the embodiments of the present utility model will be described below with reference to the drawings in the embodiments of the present utility model.

[0022] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. It should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] Please refer to Figures 1 to 2 As shown, the present disclosure provides an air compressor gas treatment device for an air compressor. The gas treatment device includes a drying tower, an oil-water cooler 300, a filter 400, and a power generation assembly 500. There are multiple drying towers, and the multiple drying towers are connected in parallel through pipelines. The first output end of the air compressor inlet pipeline 800 is connected to the oil-water cooler 300 through a pipeline. The first output end of the oil-water cooler 300 is connected to multiple groups of drying towers through a pipeline. The second output end of the oil-water cooler is connected to the filter 400 through a pipeline. The second output end of the air compressor inlet pipeline 800 is connected to multiple drying towers through a pipeline. The output ends of the multiple drying towers are connected to the power generation assembly 500 through a vent pipeline 600. Specifically, the drying tower is a device set according to the gas drying principle. The inside of the drying tower preferably contains alumina particle desiccant. When the drying tower is working, it can directly utilize the compression heat generated during the gas compression process to heat and regenerate the desiccant, and at the same time use the same air flow to cool the drying tower to complete the entire working and regeneration process. The number of drying towers can be configured according to actual needs; in order to achieve the recycling of gas between different towers, thereby improving the drying efficiency and reducing energy consumption; the oil-water cooler 300 is used to cool the gas and reduce the gas temperature. Figure 1 One side of the oil-water cooler 300 is respectively provided with a water inlet and a water outlet; the filter 400 is preferably an ultra-fine filter 400, which is used to filter the gas to remove impurities and solid particles to ensure the gas is clean; in this embodiment, through the parallel connection between multiple drying towers, the recycling of gas between different towers can be realized, thereby improving the drying efficiency and reducing energy consumption; by setting the power generation assembly 500 on the vent pipeline 600, waste gas recycling power generation is realized, and the exhausted gas is guided to the power generation assembly 500 for power generation, which can not only reduce the emission of waste gas, but also improve the gas utilization efficiency of the air compressor.

[0024] Preferably, a first pipeline 110, a second pipeline 120, and a third pipeline 130 are sequentially provided at the tops of multiple drying towers. The first pipeline 110, the second pipeline 120, and the third pipeline 130 are connected in parallel. The second output end of the air compressor is connected to the first pipeline 110. An air outlet pipeline 700 is provided at the output end of the third pipeline 130. A fourth pipeline 210, a fifth pipeline 220, and a sixth pipeline 230 are sequentially provided at the bottoms of multiple drying towers. The fourth pipeline 210, the fifth pipeline 220, and the sixth pipeline 230 are connected in parallel. The first output end of the oil-water cooler 300 is connected to the fourth pipeline 210. The output end of the fifth pipeline 220 is connected to the vent pipeline 600. The output end of the sixth pipeline 230 is further connected to the filter 400. The design of multiple pipelines realizes multiple gas treatment processes, thereby improving the gas treatment efficiency and quality.

[0025] Preferably, multiple drying towers include a first drying tower 100 and a second drying tower 200. Specifically, in this embodiment, two drying towers are connected in parallel, and the first drying tower 100 and the second drying tower 200 work in a cyclic and uninterrupted manner. The flow direction of the gas in the pipeline is controlled by a plurality of normally closed valves and normally open valves. All valves are solenoid valves, and the PLC controller is used to set the valve action switch indication to perform action control on a plurality of valves.

[0026] Preferably, it further includes a first normally open valve 231, a second normally open valve 232, a third normally open valve 131, a fourth normally open valve 132, and a fifth normally open valve 310. The first normally open valve 231 and the second normally open valve 232 are provided on the sixth pipeline 230. The third normally open valve 131 and the fourth normally open valve 132 are provided on the third pipeline 130. The fifth normally open valve 310 is provided at the input end of the oil-water cooler 300. It further includes a first normally closed valve 111, a second normally closed valve 112, a third normally closed valve 211, a fourth normally closed valve 212, a fifth normally closed valve 221, a sixth normally closed valve 222, and a seventh normally closed valve 121. The first normally closed valve 111 and the second normally closed valve 112 are provided on the first pipeline 110. The third normally closed valve 211 and the fourth normally closed valve 212 are provided on the fourth pipeline 210. The fifth normally closed valve 221 and the sixth normally closed valve 222 are provided on the fifth pipeline 220. The seventh normally closed valve 121 is provided on the second pipeline 120.

[0027] The working principle of the two drying towers is described below:

[0028] (1) The second drying tower 200 adsorbs, and the first drying tower 100 is hot blown: The compressed gas directly enters the first drying tower 100 through the second normally closed valve 112 (the moisture in the drying tower is taken away under high temperature and high pressure). The fifth normally open valve 310, the first normally closed valve 111, and the third normally closed valve 211 are closed. It enters the oil-water cooler 300 through the fourth normally closed valve 212. (The oil-water cooler 300 cools down to condense the moisture into a liquid state, and the water vapor is separated and removed by using an oil-water separator) and then enters the second drying tower 200 through the first normally open valve 231 (the air is dried in the second drying tower 200), and finally enters the outlet pipeline 700 through the third normally open valve 131;

[0029] (2) The second drying tower 200 adsorbs, and the first drying tower 100 is cold blown: The compressed gas enters the two drying towers through the fifth normally open valve 310. The first normally closed valve 111, the third normally closed valve 211, the second normally closed valve 112, and the fourth normally closed valve 212 are closed. The gas enters the oil-water cooler 300 (the oil-water cooler 300 cools down to condense the moisture into a liquid state, and the water vapor is separated and removed by using an oil-water separator) and then enters the second drying tower 200 through the first normally open valve 231 (the air is dried in the second drying tower 200). After passing through the second drying tower 200, it is divided into two paths. One path enters the outlet pipeline 700 through the third normally open valve 131, and the other path enters the first drying tower 100 through the seventh normally closed valve 121 (to reduce the temperature in the first drying tower 100), and finally is discharged through the sixth normally closed valve 222;

[0030] It should be noted that this application has at least other working states such as the second drying tower 200 being hot blown and the first drying tower 100 adsorbing; the second drying tower 200 being cold blown and the first drying tower 100 adsorbing, etc. And the switching between the first drying tower 100 and the second drying tower 200 is carried out. Hereinafter, the control principles in other modes will not be elaborated again; the switching of the drying towers and the actions of all valves are controlled by a PLC controller. The PLC controller issues a 24V switch electrical signal to open or close each valve and provides a compressed gas signal to control the valve actions; The technical solution of this air compressor gas treatment device cleverly utilizes the circulating working mode of multiple drying towers and the solenoid valve control system to achieve efficient treatment and purification of the gas.

[0031] Please refer to Figure 2As shown, preferably, the power generation component 500 includes a centrifugal fan blade 510 and a three-phase permanent magnet generator 520, wherein the centrifugal fan blade 510 is arranged at the output end of the venting pipeline 600, and the output end of the centrifugal fan blade 510 is electrically connected to the three-phase permanent magnet generator; the power generation component 500 also includes a rectifier 530 and a junction box 540, wherein the input end of the rectifier 530 is electrically connected to the three-phase permanent magnet generator, and the output end of the rectifier 530 is electrically connected to the junction box 540. The power generation component 500 also includes a DC step-up and step-down device 550, wherein the input end of the DC step-up and step-down device 550 is electrically connected to the output end of the junction box 540. The power generation component 500 also includes an inverter 560, a filter 570, a transformer 580 and a grid-connected cabinet 5590 which are electrically connected in sequence. The input end of the inverter 560 is electrically connected to the DC step-up and step-down device 550, and the output end of the inverter 560 is electrically connected to the grid-connected cabinet 5590 through the filter 570 and the transformer 580. Specifically, in this embodiment, a centrifugal fan blade 510 is preferably installed on the venting pipeline 600. The centrifugal fan blade 510 is directly connected to a 3kW three-phase permanent magnet generator through an axis. The three-phase permanent magnet generator generates AC power, which is rectified by the rectifier 530 and then merged through the junction box 540. The voltage is converted into a 488V DC voltage through the DC step-up and step-down device, and then the DC is converted into 380V AC through the inverter 560. The filter 570 performs filtering and then is connected to the grid through the grid-connected cabinet 5590. The power generation component 500 realizes efficient conversion and utilization of exhaust gas to electrical energy.

[0032] In addition to the above description, there are a few points to note:

[0033] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design;

[0034] (2) The control programs of the electronic components, air compressors, filters, etc. in the present disclosure are all mature conventional technologies in the prior art. Those skilled in the art can realize the application of the present utility model based on the principles of the same functions in the prior art. The program part is not the innovative point of the present utility model;

[0035] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air compressor gas treatment device, used for an air compressor, characterized in that: The gas processing device comprises a drying tower, an oil-water cooler (300), a filter (400) and a power generation component (500). A plurality of drying towers are provided, and the plurality of drying towers are connected in parallel via pipelines. The first output end of an air compressor air intake pipeline (800) is connected to the oil-water cooler (300) via a pipeline, the first output end of the oil-water cooler (300) is connected to the plurality of drying towers via a pipeline, the second output end of the oil-water cooler (300) is connected to the filter (400) via a pipeline, the second output end of the air compressor air intake pipeline (800) is connected to the plurality of drying towers via a pipeline, and the output ends of the plurality of drying towers are connected to the power generation component (500) via a venting pipeline (600).

2. The air compressor gas treatment device according to claim 1, characterized in that: A first pipeline (110), a second pipeline (120) and a third pipeline (130) are sequentially arranged at the tops of the plurality of drying towers; the first pipeline (110), the second pipeline (120) and the third pipeline (130) are connected in parallel; the second output end of the air compressor is connected to the first pipeline (110); and an air outlet pipeline (700) is arranged at the output end of the third pipeline (130).

3. The air compressor gas treatment device according to claim 2, characterized in that: A fourth pipeline (210), a fifth pipeline (220) and a sixth pipeline (230) are sequentially arranged at the bottom ends of the plurality of drying towers; the fourth pipeline (210), the fifth pipeline (220) and the sixth pipeline (230) are connected in parallel; a first output end of the oil-water cooler (300) is connected to the fourth pipeline (210); an output end of the fifth pipeline (220) is connected to the venting pipeline (600); and an output end of the sixth pipeline (230) is also connected to the filter (400).

4. The air compressor gas treatment device according to claim 3, characterized in that: The plurality of drying towers include a first drying tower (100) and a second drying tower (200).

5. The air compressor gas treatment device according to claim 4, characterized in that: The invention also includes a first normally open valve (231), a second normally open valve (232), a third normally open valve (131), a fourth normally open valve (132), and a fifth normally open valve (310). The first normally open valve (231) and the second normally open valve (232) are arranged on the sixth pipeline (230), the third normally open valve (131) and the fourth normally open valve (132) are arranged on the third pipeline (130), and the fifth normally open valve (310) is arranged at the input end of the oil-water cooler (300).

6. The air compressor gas treatment device according to claim 5, characterized in that: The invention also comprises a first normally closed valve (111), a second normally closed valve (112), a third normally closed valve (211), a fourth normally closed valve (212), a fifth normally closed valve (221), a sixth normally closed valve (222), and a seventh normally closed valve (121). The first normally closed valve (111) and the second normally closed valve (112) are arranged on the first pipeline (110), the third normally closed valve (211) and the fourth normally closed valve (212) are arranged on the fourth pipeline (210), the fifth normally closed valve (221) and the sixth normally closed valve (222) are arranged on the fifth pipeline (220), and the seventh normally closed valve (121) is arranged on the second pipeline (120).

7. The air compressor gas processing device according to any one of claims 1 to 6, characterized in that: The power generation component (500) comprises a centrifugal fan blade (510) and a three-phase permanent magnet generator (520); the centrifugal fan blade (510) is arranged at the output end of the venting pipeline (600); and the output end of the centrifugal fan blade (510) is electrically connected to the three-phase permanent magnet generator.

8. The air compressor gas treatment device according to claim 7, characterized in that: The power generation assembly (500) further comprises a rectifier (530) and a combiner box (540), wherein the input end of the rectifier (530) is electrically connected to the three-phase permanent magnet generator, and the output end of the rectifier (530) is electrically connected to the combiner box (540).

9. The air compressor gas treatment device according to claim 8, characterized in that: The power generation assembly (500) further comprises a DC step-up / step-down device (550), wherein an input end of the DC step-up / step-down device (550) is electrically connected to an output end of the combiner box (540).

10. The air compressor gas processing device according to claim 9, characterized in that: The power generation assembly (500) further comprises an inverter (560), a filter (570), a transformer (580) and a grid-connected cabinet (590) which are electrically connected in sequence; the input end of the inverter (560) is electrically connected to the DC step-up and step-down device (550); and the output end of the inverter (560) is electrically connected to the grid-connected cabinet (590) via the filter (570) and the transformer (580).

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