The inlet and outlet gas distribution pipelines of the shallow adsorption regeneration dryer are matched with the adsorption chamber.

Abstract

This utility model discloses a structure for the cooperation between the inlet and outlet gas distribution pipes and the adsorption chambers of a shallow adsorption regeneration dryer, relating to the field of dryer technology. It includes: two adsorption chambers, each containing adsorbent; an inlet gas distribution pipe connected to one side of each of the two adsorption chambers; an outlet gas distribution pipe connected to the other side of each of the two adsorption chambers; and an outlet gas distribution pipe connected to the inlet gas distribution pipe; wherein the ratio of the outlet diameter of the outlet gas distribution pipe to the diameter of the adsorption chamber is greater than 63%. This structure, by increasing the outlet diameter of the outlet gas distribution pipe, avoids the phenomenon of delayed instantaneous pressure relief in traditional adsorption regeneration dryers due to the outlet gas distribution pipe diameter being too small compared to the adsorption chamber diameter, thus significantly reducing subsequent regeneration purging time and greatly improving the efficiency of adsorbent regeneration resolution; this structure utilizes shallow adsorption technology to improve adsorption utilization and optimize regeneration gas consumption and regeneration cycle.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and in particular to a structure for the combination of the inlet and outlet gas distribution pipeline and the adsorption chamber in a shallow adsorption regeneration dryer. Background Technology

[0002] Adsorption-type regenerative dryers, as compressed air post-treatment equipment, employ a dual-tower adsorption-regeneration mode. Their main function is to allow humid compressed air to enter a drying tower (filled with desiccants such as molecular sieves or alumina) under a certain operating pressure. Through pressure changes (pressure swing adsorption principle), the gaseous water contained in the humid compressed air undergoes deep adsorption. Over time, the adsorbent in the drying tower gradually becomes saturated, requiring a switch to the regeneration stage. Utilizing the property that a gas's ability to hold water vapor is inversely proportional to its pressure, a portion of the dried gas (i.e., regeneration gas) is depressurized to atmospheric pressure, making it even drier. This gas then flows through a saturated adsorbent layer (i.e., a drying tower that has absorbed sufficient water vapor), drawing out the moisture from the adsorbent. This moisture is released through pressurized exhaust gas, thus achieving dehumidification. The two towers work alternately in a cycle; while one tower adsorbs, the other regenerates. No heat source is required, and dry air is continuously supplied to the user's gas system. However, existing adsorption-type regenerative dryers have the following drawbacks:

[0003] (1) Existing heatless adsorption regeneration dryers generally have an inlet (outlet) air pipe diameter that is too small compared to the adsorption tower body diameter. This causes the compressed air flow to be unstable due to changes in operating conditions during the adsorption and desorption process in the adsorption tower, which in turn affects the continuous and stable dew point of the dried product air.

[0004] (2) The desorption gas for pressure swing analysis is provided by the dryer itself. The theoretical gas consumption is a certain percentage of the amount of air in the dried product. This regeneration process consists of two parts: instantaneous depressurization and discharge through the regeneration gas path, which causes most of the moisture in the wet adsorbent in the regeneration tower to be desorbed due to air expansion, and continuous purging of the wet adsorbent by the air in the dried product at atmospheric pressure. Among them, the existing heatless adsorption regeneration dryers all have the phenomenon of slow instantaneous depressurization due to the fact that the discharge pipe diameter is too small compared with the diameter of the adsorption tower. The regeneration purpose can only be achieved by increasing the amount and time of subsequent atmospheric pressure purging regeneration gas.

[0005] (3) The adsorbents filled in the existing heatless adsorption regeneration dryer are designed based on the high adsorption capacity of the adsorbent during the adsorption of water vapor in compressed air and the dehydration process, so that the adsorbent is in a deep adsorption and regeneration working state. Therefore, a longer adsorption and regeneration cycle needs to be designed. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a structure in which the inlet and outlet gas distribution pipeline of a shallow adsorption regeneration dryer is matched with the adsorption chamber. This structure can avoid the phenomenon of slow instantaneous depressurization in the adsorption chamber, thereby significantly reducing the subsequent regeneration purging time and enabling shallow adsorption mode.

[0007] The shallow adsorption regeneration dryer according to an embodiment of the present invention includes an inlet and outlet gas distribution pipeline and an adsorption chamber matching structure, comprising:

[0008] Two adsorption chambers, each containing an adsorbent;

[0009] An air intake distribution pipe is connected to one side of each of the two adsorption chambers;

[0010] An exhaust distribution pipeline, wherein the exhaust distribution pipeline is connected to the other side of the two adsorption chambers;

[0011] The exhaust pipe is connected to the intake distribution pipe;

[0012] The ratio of the discharge diameter of the discharge pipeline to the diameter of the adsorption chamber is greater than 63%.

[0013] According to some embodiments of this utility model, the diameter of the connecting channel between the adsorption chamber and the air inlet distribution pipe is equal to the discharge diameter of the discharge pipe.

[0014] According to some embodiments of this utility model, the diameter of the connecting channel between the gas distribution pipeline and the adsorption chamber is equal to the discharge diameter of the discharge pipeline.

[0015] According to some embodiments of this utility model, the pipe diameter of the intake distribution pipe is equal to the discharge diameter of the discharge pipe.

[0016] According to some embodiments of this utility model, the pipe diameter of the gas distribution pipe is equal to the discharge diameter of the discharge pipe.

[0017] According to some embodiments of this utility model, a regeneration throttling valve is provided between the two adsorption chambers.

[0018] According to some embodiments of this utility model, an intake valve is provided on the intake distribution pipeline.

[0019] According to some embodiments of this utility model, an air outlet valve is provided on the air outlet distribution pipeline.

[0020] According to some embodiments of this utility model, a discharge valve is provided on the discharge pipeline.

[0021] According to some embodiments of this utility model, the discharge pipeline is connected to a silencer.

[0022] According to the embodiment of this utility model, the structure of the inlet and outlet gas distribution pipe and the adsorption chamber of the shallow adsorption regeneration dryer has at least the following beneficial effects: By increasing the discharge diameter of the discharge pipe to a ratio of more than 63% to the diameter of the adsorption chamber, the phenomenon of slow instantaneous pressure relief in traditional adsorption regeneration dryers due to the discharge pipe diameter being too small compared to the adsorption chamber diameter is avoided. Thus, during the regeneration pressure relief process, most of the moisture (more than 70%) of the adsorbent in the adsorption chamber can be instantly removed. The subsequent regeneration purging time can be shortened from several minutes to tens of seconds, significantly reducing the subsequent regeneration purging time and greatly improving the efficiency of adsorbent regeneration resolution. Simultaneously, the instantaneous gas decompression and expansion significantly enhances the regeneration and desorption efficiency of the adsorbent. The adsorption and regeneration cycle of the two adsorption chambers can be changed from a long time cycle to a short time cycle, meaning the adsorption and regeneration cycle is switched within a shorter time. This shortens the adsorption time of the adsorbent (to about 90 seconds). Due to the shortened adsorption time, less moisture is adsorbed each time, with moisture adsorbed only in the shallow layer of the adsorbent. This allows the regeneration gas to quickly remove the moisture from the shallow layer of the adsorbent during the regeneration process, thus greatly improving the efficiency of the entire adsorption and regeneration process. This shallow adsorption and regeneration working mode allows the adsorbent to have a larger redundant adsorption capacity, providing greater design flexibility for subsequent energy-saving control of the dryer.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of the shallow adsorption regeneration dryer's inlet and outlet gas distribution pipeline and adsorption chamber according to an embodiment of the present utility model.

[0026] Figure 2 This is a cross-sectional view of the structure of the inlet and outlet gas distribution pipeline and the adsorption chamber of the shallow adsorption regeneration dryer according to an embodiment of this utility model. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] The following reference Figures 1 to 2 This paper elaborates on the structure of the shallow adsorption regeneration dryer inlet and outlet gas distribution pipeline and the adsorption chamber according to an embodiment of the present invention.

[0031] This application proposes a structure for the matching of the inlet and outlet gas distribution pipelines and the adsorption chamber in a shallow adsorption regeneration dryer, such as... Figure 1 and Figure 2 As shown, it includes: two adsorption chambers 100, an inlet distribution pipe 200, an outlet distribution pipe 300, and an outlet pipe 400. Each adsorption chamber 100 contains adsorbent (not shown). The inlet distribution pipe 200 is connected to one side of the two adsorption chambers 100, the outlet distribution pipe 300 is connected to the other side of the two adsorption chambers 100, and the outlet pipe 400 is connected to the inlet distribution pipe 200. The ratio of the outlet diameter of the outlet pipe 400 to the diameter of the adsorption chamber 100 is greater than 63%.

[0032] According to the shallow adsorption regeneration dryer of this application, the inlet and outlet gas distribution pipes and the adsorption chamber are matched in a structure that increases the discharge diameter of the outlet pipe 400 so that its ratio with the diameter of the adsorption chamber 100 is greater than 63%. This avoids the phenomenon of slow instantaneous pressure relief in traditional adsorption regeneration dryers due to the outlet pipe diameter being too small compared with the adsorption chamber diameter. As a result, during the regeneration pressure relief process, most of the moisture (more than 70%) of the adsorbent in the adsorption chamber 100 can be removed instantly. The subsequent regeneration purging time can be shortened from several minutes to tens of seconds, significantly reducing the subsequent regeneration purging time and greatly improving the efficiency of adsorbent regeneration resolution. Simultaneously, the instantaneous gas decompression and expansion significantly enhances the regeneration and desorption efficiency of the adsorbent. The adsorption and regeneration cycle of the two adsorption chambers 100 can be changed from a long time cycle to a short time cycle, meaning the adsorption and regeneration cycle is switched within a shorter time, shortening the adsorption time of the adsorbent (to about 90 seconds). Due to the shortened adsorption time, less moisture is adsorbed each time, with moisture adsorbed only in the shallow layer of the adsorbent. This allows the regeneration gas to quickly remove the moisture from the shallow layer of the adsorbent during the regeneration process, thus greatly improving the efficiency of the entire adsorption and regeneration process. This shallow adsorption and regeneration working mode allows the adsorbent to have a larger redundant adsorption capacity, providing greater design flexibility for subsequent energy-saving control of the dryer.

[0033] It should be noted that, as Figure 1 As shown, the discharge pipe diameter of the discharge pipe 400 is marked as F, the diameter of the adsorption chamber 100 is marked as C, and the value of C / F is greater than 63%.

[0034] Furthermore, in some embodiments of this application, the diameter of the connecting channel between the adsorption chamber 100 and the inlet distribution pipe 200 is equal to the discharge diameter of the outlet pipe 400. The diameter of the connecting channel between the outlet distribution pipe 300 and the adsorption chamber 100 is equal to the discharge diameter of the outlet pipe 400. The pipe diameter of the inlet distribution pipe 200 is equal to the discharge diameter of the outlet pipe 400. The pipe diameter of the outlet distribution pipe 300 is equal to the discharge diameter of the outlet pipe 400. It should be noted that, as Figure 1As shown, the diameter of the connecting channel between the adsorption chamber 100 and the inlet distribution pipe 200 is marked as B, the diameter of the connecting channel between the outlet distribution pipe 300 and the adsorption chamber 100 is marked as D, the pipe diameter of the inlet distribution pipe 200 is marked as A, and the pipe diameter of the outlet distribution pipe 300 is marked as E. In this example, B=D=A=E=F. By setting all the above diameters to be equal, the airflow remains stable during the inlet and outlet processes, ensuring that the compressed airflow does not become unstable due to changes in operating conditions during the adsorption and desorption process within the adsorption chamber 100. Moreover, to avoid momentary pressure relief delays during the pressure relief process, all the above diameters need to be kept consistent, allowing the depressurized airflow to quickly pass from the adsorption chamber 100 through the inlet distribution pipe 200 and exit from the outlet pipe 400.

[0035] Furthermore, in some embodiments of this application, a regeneration throttling valve (not shown) is provided between the two adsorption chambers 100. The regeneration throttling valve is used to control the flow rate and timing of the regeneration gas. It should be noted that the two adsorption chambers 100 alternately serve as a drying chamber and a regeneration chamber. The drying chamber dries the gas with adsorbent. Most of the dried gas is discharged from the outlet distribution pipe 300, and a small portion enters the regeneration chamber through the regeneration throttling valve as regeneration gas to desorb the adsorbent in the regeneration chamber.

[0036] Furthermore, in some embodiments of this application, an intake valve is provided on the intake distribution pipeline 200. The intake valve is used to control the flow rate and timing of the compressed gas. When it is necessary to introduce the compressed gas to be dried into the adsorption chamber 100, the intake valve is opened so that the compressed gas enters the adsorption chamber 100 through the intake distribution pipeline 200 for drying.

[0037] Furthermore, in some embodiments of this application, an outlet valve is provided on the outlet distribution pipeline 300. The outlet valve is used to control the flow rate and timing of the drying gas. After the compressed gas passes through the adsorption chamber 100 for drying, most of the drying gas flows out from the outlet distribution pipeline 300 through the outlet valve.

[0038] Furthermore, in some embodiments of this application, a discharge valve is provided on the discharge pipeline 400. The discharge valve is used to control the flow rate and timing of the gas during the depressurization process. When it is necessary to depressurize the adsorption chamber 100 so that the gas in the regeneration chamber carries away the moisture, the discharge valve is opened so that the gas is discharged from the discharge pipeline 400 through the discharge valve.

[0039] Furthermore, in some embodiments of this application, the discharge pipeline is connected to a silencer to reduce the emission noise generated during the operation of the adsorption regeneration dryer.

[0040] According to the shallow adsorption regeneration dryer in this application embodiment, the inlet and outlet air distribution pipes and the adsorption chamber are matched by modifying the diameter of each pipe. This makes the diameter of the connecting channel between the adsorption chamber 100 and the inlet air distribution pipe 200, the diameter of the connecting channel between the outlet air distribution pipe 300 and the adsorption chamber 100, the pipe diameter of the inlet air distribution pipe 200, and the pipe diameter of the outlet air distribution pipe 300 equal to the discharge diameter of the discharge pipe 400. This ensures that the compressed air flow will not become unstable due to changes in operating conditions during the adsorption and desorption process in the adsorption chamber 100. By increasing the discharge diameter of the discharge pipe 400 to a ratio greater than 63% to the diameter of the adsorption chamber 100, the slow instantaneous pressure relief phenomenon caused by the discharge pipe diameter being too small compared to the adsorption chamber diameter in traditional adsorption regeneration dryers is avoided. As a result, during the regeneration pressure relief process, most of the moisture (over 70%) of the adsorbent in the adsorption chamber 100 can be instantly removed. The subsequent regeneration purging time can be shortened from several minutes to tens of seconds, significantly reducing the subsequent regeneration purging time and greatly improving the efficiency of adsorbent regeneration resolution. Simultaneously, the instantaneous gas decompression and expansion significantly improves the regeneration efficiency of the adsorbent. The adsorption and regeneration cycle of the two adsorption chambers 100 can be changed from a long time cycle to a short time cycle, that is, the adsorption and regeneration cycle is changed in a shorter time, which shortens the adsorption time of the adsorbent (about 90 seconds). Because the adsorption time of the adsorbent is shortened, less water is adsorbed each time, and water is only adsorbed through the shallow layer of the adsorbent. This allows the regeneration gas to quickly remove the water in the shallow layer of the adsorbent during the regeneration process, thereby greatly improving the efficiency of the entire adsorption and regeneration process. This shallow adsorption and regeneration working mode allows the adsorbent to have a larger redundant adsorption capacity, providing greater design space for the subsequent energy-saving control of the dryer. This structure uses shallow adsorption technology to improve the adsorption utilization rate, optimize the regeneration gas consumption and regeneration time cycle, so as to obtain a new product with higher efficiency, lower energy consumption, and lower gas consumption.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A kind of shallow adsorption regenerative dryer inlet and outlet air distribution pipeline and adsorption cavity cooperation structure, it is characterized in that, include: Two adsorption chambers, each containing an adsorbent; An air intake distribution pipe is connected to one side of each of the two adsorption chambers; An exhaust distribution pipeline, wherein the exhaust distribution pipeline is connected to the other side of the two adsorption chambers; The exhaust pipe is connected to the intake distribution pipe; The ratio of the discharge diameter of the discharge pipeline to the diameter of the adsorption chamber is greater than 63%.

2. The structure of the shallow adsorption regeneration dryer's inlet and outlet gas distribution pipeline and adsorption chamber according to claim 1, characterized in that, The diameter of the connecting channel between the adsorption chamber and the air inlet distribution pipe is equal to the discharge diameter of the discharge pipe.

3. The inlet and outlet air distribution pipeline and adsorption cavity matching structure of a shallow adsorption regenerative dryer according to claim 1, characterized in that, The diameter of the connecting channel between the gas distribution pipeline and the adsorption chamber is equal to the discharge diameter of the discharge pipeline.

4. The inlet and outlet air distribution pipeline and adsorption cavity matching structure of a shallow adsorption regenerative dryer according to claim 1, characterized in that, The diameter of the intake distribution pipe is equal to the diameter of the exhaust pipe.

5. The inlet and outlet air distribution pipeline and adsorption cavity matching structure of a shallow adsorption regenerative dryer according to claim 1, characterized in that, The diameter of the outlet distribution pipe is equal to the diameter of the discharge pipe.

6. The inlet and outlet air distribution pipeline and adsorption cavity matching structure of a shallow adsorption regenerative dryer according to claim 1, characterized in that, A regeneration throttling valve is provided between the two adsorption chambers.

7. The structure of the shallow adsorption regeneration dryer's inlet and outlet gas distribution pipeline and adsorption chamber according to claim 1, characterized in that, An intake valve is installed on the intake distribution pipeline.

8. The inlet and outlet air distribution pipeline and adsorption cavity matching structure of a shallow adsorption regenerative dryer according to claim 1, characterized in that, An exhaust valve is installed on the exhaust distribution pipeline.

9. The inlet and outlet air distribution pipeline and adsorption cavity matching structure of a shallow adsorption regenerative dryer according to claim 1, characterized in that, A discharge valve is installed on the discharge pipeline.

10. The inlet and outlet air distribution pipeline and adsorption cavity matching structure of a shallow adsorption regenerative dryer according to claim 1, characterized in that, The discharge pipeline is connected to a silencer.

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