Aftertreatment device of air compressor

Abstract

The invention discloses an air compressor post-treatment device which comprises a precooler, an evaporator, an automatic drainer and an adsorption tower, the precooler is used for receiving compressed air from an air compressor and cooling the compressed air, and the evaporator is connected with the automatic drainer. The evaporator is communicated with the precooler so as to cool and dehumidify the compressed air, the automatic drainer is communicated with the evaporator so as to discharge moisture and oil in the compressed air, and the adsorption tower is communicated with the evaporator so as to dry the compressed air. And an outlet of the adsorption tower is communicated with the precooler so as to carry out heat exchange on the dried compressed air and the compressed air from the air compressor. The air compressor aftertreatment device has the advantages of being stable in drying effect and high in reliability.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to an air compressor post-treatment device. Background Art

[0002] The dryer uses an adsorption tower adsorbent to achieve the moisture content of compressed air. The desiccant is prone to hardening in the tower after one month of use, which will block the compressed air channel. In addition, the adsorbent's adsorption function decreases as it expires. The high moisture content in the compressed air affects the unstable air source of the unit and causes misoperation. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides an air compressor post-processing device, which has the advantages of stable drying effect and high reliability.

[0004] According to an air compressor post-processing device of an embodiment of the present invention, the air compressor post-processing device includes a precooler, an evaporator, an automatic drainer and an adsorption tower, the precooler is used to receive compressed air from the air compressor and cool the compressed air, the evaporator is connected to the precooler to cool and dehumidify the compressed air, the automatic drainer is connected to the evaporator to discharge moisture and oil from the compressed air, the adsorption tower is connected to the evaporator to dry the compressed air, and the outlet of the adsorption tower is connected to the precooler to perform heat exchange between the dried compressed air and the compressed air from the air compressor.

[0005] The air compressor post-processing device according to the embodiment of the present invention has the advantages of stable drying effect and high reliability. The present application has the following advantages: improving the reliability of the gas supply and starting device in the boiler plant, reducing the power consumption rate and industrial water consumption of the plant, reducing energy consumption and reducing secondary pollution caused by waste disposal, and effectively reducing labor maintenance costs and material maintenance costs.

[0006] In some embodiments, the compressor is connected to the evaporator through a pipeline, and the condenser is connected to the evaporator and the compressor through a pipeline.

[0007] In some embodiments, an expansion valve is provided on the pipeline between the condenser and the evaporator.

[0008] In some embodiments, a filter is provided on the pipeline between the evaporator and the adsorption tower.

[0009] In some embodiments, the adsorption tower includes a heater and two drying towers, the two drying towers are connected in parallel through pipelines, the heater is connected to the two drying towers through pipelines, and the heater is connected to the regeneration gas inlet of the drying towers through pipelines.

[0010] In some embodiments, the precooler has a first inlet connected to the air compressor and a second inlet connected to the adsorption tower, and the precooler also has a dry air outlet and a second outlet connected to the evaporator.

[0011] In some embodiments, the air compressor post-processing device further includes an oil-water separator, and the oil-water separator is located in a pipeline between the evaporator and the automatic drainer.

[0012] In some embodiments, a pressure maintaining valve is provided on the pipeline between the adsorption tower and the precooler.

[0013] In some embodiments, the air compressor post-processing device further includes a regeneration fan, and the regeneration fan is connected to the regeneration air inlet to promote the flow of the regeneration air. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of an air compressor post-processing device according to an embodiment of the present invention.

[0015] Figure numerals: 1. Precooler; 11. First inlet; 12. Second inlet; 13. Dry air outlet; 14. Second outlet; 2. Evaporator; 3. Automatic drainer; 4. Compressor; 5. Condenser; 6. Heater; 7. Drying tower; 8. Filter; 9. Expansion valve; 10. Regeneration gas. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0017] According to the air compressor post-processing device of the embodiment of the present invention, the air compressor post-processing device includes a precooler 1, an evaporator 2, an automatic drainer 3 and an adsorption tower. The precooler 1 is used to receive compressed air from the air compressor and cool the compressed air. The evaporator 2 is connected to the precooler 1 to cool and dehumidify the compressed air. The automatic drainer 3 is connected to the evaporator 2 to discharge the moisture and oil in the compressed air. The adsorption tower is connected to the evaporator 2 to dry the compressed air. The outlet of the adsorption tower is connected to the precooler 1 to heat exchange the dried compressed air with the compressed air from the air compressor. The precooler 1 is used to reduce the temperature of the compressed air from the air compressor and reduce the moisture in the compressed air, which can reduce the workload of the evaporator 2. The precooler 1 receives the air from the adsorption tower to achieve heat exchange, and can recycle the heat in the hot and humid air from the air compressor. The evaporator 2 is used to absorb the heat in the compressed air and condense the moisture in the gas for dehumidification. The automatic drainer 3 is used to discharge the moisture generated by condensation in the evaporator 2 to keep the system clean and efficient. The adsorption tower further dries the air, and the dried compressed air is sent to the precooler to heat it and recover a certain amount of heat. The excess dry compressed air can flow into the air storage tank as a gas source reserve. This equipment adopts a closed cycle mode to timely process the exhaust of the air compressor while reducing energy consumption.

[0018] The air compressor post-processing device according to the embodiment of the present invention has the advantages of stable drying effect and high reliability.

[0019] In some embodiments, the compressor 4 is connected to the evaporator 2 through a pipeline, and the condenser 5 is connected to the evaporator 2 and the compressor 4 through a pipeline.

[0020] Specifically, the condenser 5 cooperates with the compressor 4 to discharge the heat of the refrigerant to cool the air of the evaporator 2. The compressor 4 is used to promote the refrigerant to circulate between the evaporator 2 and the condenser 5, so as to realize the cooling and dehumidification function of the evaporator 2.

[0021] In some embodiments, an expansion valve 9 is provided on the pipeline between the condenser 5 and the evaporator 2 .

[0022] Specifically, the expansion valve 9 is arranged between the condenser 5 and the evaporator 2 to adjust the flow rate and pressure of the refrigerant to ensure the smooth operation of the evaporator 2 .

[0023] In some embodiments, a filter 8 is provided on the pipeline between the evaporator 2 and the adsorption tower.

[0024] Specifically, the filter 8 is arranged on the pipeline between the evaporator 2 and the adsorption tower to further purify the compressed air and avoid clogging of the adsorption tower.

[0025] In some embodiments, the adsorption tower includes a heater 6 and two drying towers 7, the two drying towers 7 are connected in parallel through pipelines, the heater 6 is connected to the two drying towers 7 through pipelines, and the heater 6 is connected to the regeneration gas inlet of the drying towers 7 through pipelines.

[0026] Specifically, the two drying towers 7 of the adsorption tower work alternately, one performs drying and adsorption and the other performs regeneration, the heater 6 heats the regeneration gas for the drying tower 7 in regeneration, the high-temperature dry gas heats the adsorption material in the drying tower 7, and after the evaporated water and pollution are discharged, the regeneration of the adsorption material in the drying tower 7 is completed. The regeneration gas is heated by the precooler 1 and then heated by the heater 6, which reduces heat waste, improves the heating efficiency of the heater 6, and can shorten the regeneration time.

[0027] In some embodiments, the precooler 1 has a first inlet 11 connected to the air compressor and a second inlet 12 connected to the adsorption tower. The precooler 1 also has a dry air outlet 13 and a second outlet 14 connected to the evaporator 2 .

[0028] Specifically, the dry air outlet 13 on the precooler 1 is used to provide regeneration air for the drying tower 7, the first inlet 11 connected to the air compressor is used to receive humid hot air, the second inlet 12 and the dry air outlet 13 are located on the same side of the heat exchange of the precooler 1, and the first inlet 11 and the second outlet 14 are located on the same side of the heat exchange of the precooler 1.

[0029] In some embodiments, the air compressor post-processing device further includes an oil-water separator, and the oil-water separator is located in a pipeline between the evaporator 2 and the automatic drain 3 .

[0030] Specifically, the oil-water separator is used to further remove oil droplets and moisture from the compressed air to ensure the drying effect.

[0031] In some embodiments, a pressure maintaining valve is provided on the pipeline between the adsorption tower and the precooler 1 .

[0032] Specifically, the pressure maintaining valve is used to maintain the pressure in the system stable to prevent the pressure from being too low or too high during the regeneration of the drying tower 7 and affecting the regeneration effect. The pressure maintaining valve can use an electric actuator to control the opening and closing of the valve to maintain a constant pressure in the system.

[0033] In some embodiments, the air compressor post-processing device further includes a regeneration fan, which is connected to the regeneration air inlet to promote the flow of the regeneration air.

[0034] Specifically, the regeneration fan is used to provide the necessary airflow during the regeneration process of the adsorption tower, and to purge the bed layer where the adsorption material is located through the high-heat airflow to remove the adsorbed moisture and other pollutants. This can speed up the regeneration process and improve the drying efficiency of the dryer.

[0035] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An air compressor post-processing device, characterized in that: include: A precooler, the precooler is used to receive compressed air from the air compressor and cool the compressed air; An evaporator, the evaporator is connected to the precooler to cool and dehumidify the compressed air; An automatic drainer, the automatic drainer is connected to the evaporator to discharge moisture and oil from the compressed air; An adsorption tower is connected to the evaporator to dry the compressed air, and an outlet of the adsorption tower is connected to the precooler to perform heat exchange between the dried compressed air and the compressed air from the air compressor.

2. The air compressor post-processing device according to claim 1, characterized in that: The compressor is connected to the evaporator through a pipeline, and the condenser is connected to the evaporator and the compressor through a pipeline.

3. The air compressor post-processing device according to claim 2, characterized in that: An expansion valve is arranged on the pipeline between the condenser and the evaporator.

4. The air compressor post-processing device according to claim 1, characterized in that: A filter is arranged on the pipeline between the evaporator and the adsorption tower.

5. The air compressor post-processing device according to claim 1, characterized in that: The adsorption tower comprises a heater and two drying towers, the two drying towers are connected in parallel through pipelines, the heater is connected to the two drying towers through pipelines, and the heater is connected to the regeneration gas inlet of the drying towers through pipelines.

6. The air compressor post-processing device according to claim 1, characterized in that: The precooler has a first inlet connected to the air compressor and a second inlet connected to the adsorption tower. The precooler also has a dry air outlet and a second outlet connected to the evaporator.

7. The air compressor post-processing device according to claim 1, characterized in that: It also includes an oil-water separator, which is located in the pipeline between the evaporator and the automatic drainer.

8. The air compressor post-processing device according to claim 1, characterized in that: A pressure maintaining valve is arranged on the pipeline between the adsorption tower and the precooler.

9. The air compressor post-processing device according to claim 5, characterized in that: It also includes a regeneration fan, which is connected to the regeneration air inlet to promote the flow of regeneration air.

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