Energy-saving compressed air drying equipment

Abstract

The utility model provides energy-saving compressed air drying equipment, which belongs to the technical field of compressed air drying equipment and comprises a first adsorption tower, a second adsorption tower and a heat exchanger. The compressed air and the dry air are subjected to heat exchange in the heat exchanger, the effect of preliminarily heating the dry air is achieved, the preliminarily heated dry air enters the electric heater to be heated to 105 DEG C or above, and then enters the first adsorption tower to reduce saturated adsorption materials. Compression heat of compressed air is used for heating dry air, and the effect of saving energy is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressed air drying equipment technical field especially a kind of energy-saving compressed air drying equipment. BACKGROUND

[0002] Compressed air is produced by air compressor, with certain moisture, need to dry compressed air before use, otherwise it can corrode equipment, the adsorption tower of existing compressed air dryer is equipped with active alumina and 13X molecular sieve adsorption moisture as moisture adsorption material, the moisture in compressed air is adsorbed by adsorption material, and the drying of compressed air is completed, after a period of work, active alumina and 13X molecular sieve saturation, need to replace dryer, but production line cannot stop work and need to provide dry compressed air continuously, it is more troublesome to replace dryer, the utility model patent with application No.2025208711861 provides a kind of drying equipment of double adsorption tower, one adsorption tower utilizes the waste heat of compressed air to reduce adsorption material, the other adsorption adsorbs the moisture in compressed air, after the adsorption material of previous adsorption tower is all reduced, two towers can be adjusted work, change previous adsorption tower adsorbs moisture, and the latter adsorption tower reduces, can not replace dryer, but when the temperature of compressed air is relatively low, the reduction efficiency of adsorption material is lower, generally not used for the reduction of adsorption material, but directly cooling, adsorbing moisture and then discharging, and then extracting dry air to heat and reduce adsorption material, compressed air waste heat is wasted, and needs to be improved. SUMMARY

[0003] To solve one or more technical problems existing in the prior art, the utility model provides at least one beneficial choice or creates conditions.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A kind of energy-saving compressed air drying equipment, including first adsorption tower, second adsorption tower and intake pipe, the intake pipe is sequentially connected with the first end of first pipeline from left to right, is equipped with second valve, tenth valve, is connected with the upper end of first adsorption tower, the lower end of first adsorption tower is connected with one end of second pipeline, the second pipeline is sequentially connected with the first end of third pipeline from left to right, is equipped with sixth valve, is connected with the second end of first pipeline, is equipped with fifth valve, is connected with the lower end of second adsorption tower,

[0006] The upper end of the second adsorption tower is connected to the first end of the outlet pipe. The outlet pipe, from bottom to top, is connected to the first end of the fifth pipe, has an eleventh valve, connects to the first end of the sixth pipe, and the first end of the seventh pipe. The fifth pipe, from left to right, has a ninth valve and connects to the pipe section between the second and tenth valves of the inlet pipe, forming a connection point. The sixth pipe connects to the pipe section between the tenth valve and the first adsorption tower of the inlet pipe. The sixth pipe also has a twelfth valve. The seventh pipe, from top to bottom, has a filter, a fourteenth valve, a booster, a thirteenth valve, connects to the first end of the eighth pipe, has a fifteenth valve, and connects to the second outlet of the heat exchanger on the first pipe. The eighth pipe, from left to right, has a sixteenth valve, a second cooler, and connects to the pipe section between the ninth valve and the connection point of the fifth pipe, forming a second connection point.

[0007] The first pipeline, from top to bottom, is equipped with a first valve, a heat exchanger, a first cooler, and a first gas-water separator. The third pipeline, from left to right, is equipped with an eighth valve, a first end connected to the ninth pipeline, a seventh valve, and a section connecting the second pipeline between the fifth valve and the second adsorption tower. The ninth pipeline, from bottom to top, is connected to the first end of the tenth pipeline, equipped with a fourth valve, a second gas-water separator, and a section connecting the eighth pipeline between the sixteenth valve and the second cooler. The tenth pipeline, from left to right, is equipped with a third valve and a section connecting the first pipeline between the heat exchanger and the first cooler. The first outlet of the heat exchanger is connected to the first end of the eleventh pipeline. The eleventh pipeline, from right to left, is equipped with an electric heater and a section connecting the eighth pipeline between the second cooler and the second connection point.

[0008] The beneficial effects of this utility model are as follows: By setting up a heat exchanger, when the temperature of the compressed air is relatively low, the compressed air enters the second adsorption tower through the first pipe to adsorb moisture, and dry air is drawn from the outlet pipe into the heat exchanger. The compressed air and dry air exchange heat in the heat exchanger to achieve the effect of initially heating the dry air. The initially heated dry air then enters the electric heater to be heated to above 105 degrees Celsius before entering the first adsorption tower to reduce the saturated adsorption material. The heat of compression of the compressed air is used to heat the dry gas, thereby achieving the effect of saving energy. Attached Figure Description

[0009] Fig. 1 This is a schematic diagram of an embodiment;

[0010] Fig. 2 This is a diagram of the piping system;

[0011] Explanation of reference numerals in the attached diagram: 1. First adsorption tower; 2. Second adsorption tower; 3. Inlet pipe; 4. First pipeline; 5. Second valve; 6. Tenth valve; 7. Second pipeline; 8. Third pipeline; 9. Sixth valve; 10. Fifth valve; 11. Outlet pipe; 12. Fifth pipeline; 13. Eleventh valve; 14. Sixth pipeline; 15. Seventh pipeline; 16. Ninth valve; 17. First connection point; 18. Twelfth valve; 19. Filter; 20. Fourteenth valve; 21. Booster compressor; 22. Thirteenth valve; 23. Eighth pipeline; 24. Fifteenth valve; 25. Heat exchanger; 26. Sixteenth valve; 27. Second cooler; 28. First valve; 29. ​​First cooler; 30. First gas-water separator; 31. Eighth valve; 32. Ninth pipeline; 33. Seventh valve; 34. Tenth pipeline; 35. Fourth valve; 36. Second gas-water separator; 37. Third valve; 38. Eleventh pipeline; 39. Electric heater. Detailed Implementation

[0012] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0013] Example: Refer to Figs. 1-2 The present invention discloses an energy-saving compressed air drying device, comprising a first adsorption tower 1, a second adsorption tower 2, and an air inlet pipe 3. The air inlet pipe 3, from left to right, is connected to the first end of a first pipe 4, has a second valve 5, a tenth valve 6, and connects to the upper end of the first adsorption tower 1. The lower end of the first adsorption tower 1 is connected to one end of a second pipe 7. The second pipe 7, from left to right, is connected to the first end of a third pipe 8, has a sixth valve 9, connects to the second end of the first pipe 4, has a fifth valve 10, and connects to the lower end of the second adsorption tower 2. The upper end of the second adsorption tower 2 is connected to the first end of an air outlet pipe 11. The air outlet pipe 11, from bottom to top, is connected to the first end of a fifth pipe 12, has an eleventh valve 13, connects to the first end of a sixth pipe 14, and the first end of a seventh pipe 15. The fifth pipe... The 12 pipe is provided with a ninth valve 16 from left to right, a pipe section connecting the intake pipe 3 between the second valve 5 and the tenth valve 6, forming a first connection point 17. The sixth pipe 14 connects the pipe section of the intake pipe 3 between the tenth valve 6 and the first adsorption tower 1. The sixth pipe 14 is also provided with a twelfth valve 18. The seventh pipe 15 is provided with a filter 19, a fourteenth valve 20, a booster 21, a thirteenth valve 22 from top to bottom, a first end connecting to the eighth pipe 23, a fifteenth valve 24, and a second outlet connecting to the heat exchanger 25 on the first pipe 4. The eighth pipe 23 is provided with a sixteenth valve 26 from left to right, a second cooler 27, and a pipe section connecting the fifth pipe 12 between the ninth valve 16 and the first connection point 17, forming a second connection point at the connection.

[0014] The first pipeline 4, from top to bottom, is provided with a first valve 28, a heat exchanger 25, a first cooler 29, and a first gas-water separator 30. The third pipeline 8, from left to right, is provided with an eighth valve 31, a first end connected to the ninth pipeline 32, a seventh valve 33, and a section connecting the second pipeline 7 between the fifth valve 10 and the second adsorption tower 2. The ninth pipeline 32, from bottom to top, is provided with a first end connected to the tenth pipeline 34, a fourth valve 35, a second gas-water separator 36, and a section connecting the eighth pipeline 23 between the sixteenth valve 26 and the second cooler 27. The tenth pipeline 34, from left to right, is provided with a third valve 37 and a section connecting the first pipeline 4 between the heat exchanger 25 and the first cooler 29. The first outlet of the heat exchanger 25 is connected to the first end of the eleventh pipeline 38. The eleventh pipeline 38, from right to left, is provided with an electric heater 39 and a section connecting the eighth pipeline 23 between the second cooler 27 and the second connection point.

[0015] Work Mode 1:

[0016] The adsorbent material can only be fully reduced at a temperature above 105 degrees Celsius. When the temperature of the compressed air is higher than 105 degrees Celsius, the compressed air → second valve 5 → tenth valve 6 → first adsorption tower 1 → eighth valve 31 → third valve 38 → first cooler 29 → first gas-liquid separator 30 → fifth valve 10 → second adsorption tower 2 → eleventh valve 13 → first outlet is used to reduce the adsorbent material in the first tower using high-temperature compressed air, without the need for secondary heating of the compressed air.

[0017] Valve open status: Second valve 5, third valve 38, fifth valve 10, eighth valve 31, tenth valve 6 and eleventh valve 13 are open, and other valves are closed.

[0018] After the first adsorption tower 11 has completed the reduction of the adsorbent material, the adsorbent material needs to be cooled down. The following workflow is adopted:

[0019] Compressed air → First valve 28 → Heat exchanger 25 → First cooler 29 → First water-air separator 30 → Fifth valve 10 → Second adsorption tower 2 → Eleventh valve 13 → First outlet; Dry air → Second outlet → Filter 19 → Fourteenth valve 20 → Booster 21 → Thirteenth valve 22 → Sixteenth valve 26 → Second cooler 27 → Tenth valve 6 → First adsorption tower 1 → Eighth valve 31 → Third valve 38 → First cooler 29 → First water-air separator 30 → Fifth valve 10 → Second adsorption tower 2 → Eleventh valve 13 → First outlet.

[0020] The compressed air is cooled by the first cooler 29 and then discharged after adsorbing moisture in the second adsorption tower 2. The heat exchanger 25 does not perform heat exchange. Dry air is drawn from the second outlet and cooled by the second cooler 27 to cool the adsorption material in the first adsorption tower 1. This prepares for the first adsorption tower 1 and the second adsorption tower 2 to be interchanged without stopping the dryer.

[0021] Valve open status: Valve 28 (first valve), 38 (third valve), 10 (fifth valve), 31 (eighth valve), 6 (tenth valve), 13 (eleventh valve), 22 (thirteenth valve), 20 (fourteenth valve), and 26 (sixteenth valve) are open; other valves are closed.

[0022] Working Mode Two:

[0023] When the temperature of the compressed air is below 105 degrees Celsius, the compressed air and the dry air exchange heat in the heat exchanger 25 to preheat the dry air. The working process is as follows:

[0024] Compressed air → First valve 28 → Heat exchanger 25 → First cooler 29 → First water-air separator 30 → Fifth valve 10 → Second adsorption tower 2 → Eleventh valve 13 → First outlet; Dry air → Second outlet → Filter 19 → Fourteenth valve 20 → Booster 21 → Thirteenth valve 22 → Fifteenth valve 24 → Heat exchanger 25 → Electric heater 39 → Tenth valve 6 → First adsorption tower 1 → Eighth valve 31 → Third valve 38 → First cooler 29 → First water-air separator 30 → Fifth valve 10 → Second adsorption tower 2 → Eleventh valve 13 → First outlet.

[0025] Valve open status: Valve 28 (first valve), 10 (fifth valve), 31 (eighth valve), 6 (tenth valve), 13 (eleventh valve), 22 (thirteenth valve), 20 (fourteenth valve), and 24 (fifteenth valve) are open; other valves are closed.

[0026] Compressed air and dry air exchange heat in heat exchanger 25 to initially heat the dry air, and then the dry air is heated a second time by electric heater to reduce the adsorbent material in the first adsorption tower 1, thus saving energy.

[0027] The cooling process is the same as the cooling process in working mode one.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An energy-saving compressed air drying device, comprising a first adsorption tower (1), a second adsorption tower (2), and an air inlet pipe (3), characterized in that: The air inlet pipe (3) is connected from left to right to the first end of the first pipe (4), the second valve (5), the tenth valve (6), and the upper end of the first adsorption tower (1). The lower end of the first adsorption tower (1) is connected to one end of the second pipe (7). The second pipe (7) is connected from left to right to the first end of the third pipe (8), the sixth valve (9), the second end of the first pipe (4), the fifth valve (10), and the lower end of the second adsorption tower (2). The upper end of the second adsorption tower (2) is connected to the first end of the air outlet pipe (11). The air outlet pipe (11) is connected from bottom to top to the first end of the fifth pipe (12), the eleventh valve (13), the first end of the sixth pipe (14), and the first end of the seventh pipe (15). The fifth pipe (12) is connected from left to right to the ninth valve (16), and the air inlet pipe. (3) The pipe section between the second valve (5) and the tenth valve (6) forms the first connection point (17). The sixth pipe (14) connects the pipe section between the tenth valve (6) and the first adsorption tower (1) of the air inlet pipe (3). The sixth pipe (14) is also provided with the twelfth valve (18). The seventh pipe (15) is provided with the filter (19), the fourteenth valve (20), the booster (21), the thirteenth valve (22), the first end connected to the eighth pipe (23), the fifteenth valve (24), and the second outlet connected to the heat exchanger (25) on the first pipe (4) from top to bottom. The eighth pipe (23) is provided with the sixteenth valve (26), the second cooler (27), and the pipe section connected to the fifth pipe (12) between the ninth valve (16) and the first connection point (17) from left to right. The connection point forms the second connection point. The first pipeline (4) is provided with a first valve (28), a heat exchanger (25), a first cooler (29), and a first gas-water separator (30) from top to bottom. The third pipeline (8) is provided with an eighth valve (31), a first end connected to the ninth pipeline (32), a seventh valve (33), and a pipe section connecting the second pipeline (7) between the fifth valve (10) and the second adsorption tower (2) from left to right. The ninth pipeline (32) is provided with a fourth valve (35) and a second gas-water separator (36) from bottom to top, connected to the first end of the tenth pipeline (34). The pipe section connecting the eighth pipe (23) between the sixteenth valve (26) and the second cooler (27) is provided with the third valve (37) and the pipe section connecting the first pipe (4) between the heat exchanger (25) and the first cooler (29) from left to right. The first outlet of the heat exchanger (25) is connected to the first end of the eleventh pipe (38). The eleventh pipe (38) is provided with the electric heater (39) from right to left and the pipe section connecting the eighth pipe (23) between the second cooler (27) and the second connection point is provided.

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