CN114534457A - Drying device and drying method suitable for large-flow compressed air - Google Patents

Drying device and drying method suitable for large-flow compressed air Download PDF

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Publication number
CN114534457A
CN114534457A CN202210253083.XA CN202210253083A CN114534457A CN 114534457 A CN114534457 A CN 114534457A CN 202210253083 A CN202210253083 A CN 202210253083A CN 114534457 A CN114534457 A CN 114534457A
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valve
adsorption tower
compressed air
way
respectively connected
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汪永坚
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Beko Purification Technology Nantong Co ltd
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Beko Purification Technology Nantong Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40003—Methods relating to valve switching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/402—Further details for adsorption processes and devices using two beds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Gases (AREA)

Abstract

The invention discloses a drying device and a drying method thereof suitable for large-flow compressed air, wherein the drying device comprises the following steps: the adsorption tower comprises two adsorption towers, wherein in the upper pipe system of the two adsorption towers, a three-way pipe 1 is respectively connected with the upper port of an adsorption tower B1, a check valve R1 and a check valve R3; the three-way pipe 2 is respectively connected with the upper port of the adsorption tower B2, a check valve R2 and a check valve R4; the three-way pipe 3 is respectively connected with a one-way valve R1, a one-way valve R2 and an outlet pipeline; the three-way pipe 4 is respectively connected with the check valves R3, R4 and the outlet of the heater HT 1; in the lower piping system, a three-way pipe 5 is respectively connected with the lower port of an adsorption tower B1 and valves K1 and K3; the three-way pipe 6 is respectively connected with the lower port of the adsorption tower B2 and valves K2 and K4; the three-way pipe 7 is respectively connected with valves K1, K2 and a compressed air inlet; the three-way pipe 8 is respectively connected with valves K3, K4 and a regenerated gas outlet. The invention has no loss of finished product compressed air, saves compressed air resources, does not need to use cooling water, is convenient for plant layout, has wide application range, small quantity of control valves, simple and compact pipelines and high reliability.

Description

Drying device and drying method suitable for large-flow compressed air
Technical Field
The invention belongs to the technical field of dryers, and particularly relates to a drying device and a drying method suitable for large-flow compressed air.
Background
The forced air heating regeneration adsorption dryer is a type of compressed air dryer which is widely used in the market at present. Its advantages are many, such as: good drying effect, stable dew point below-40 ℃, even below-70 ℃, mature production process and technology, and the like.
However, it also has a number of disadvantages: 1. part of the blowing heating regeneration adsorption type dryer utilizes finished product compressed air to blow cold the adsorbent, so that a certain amount of finished product compressed air is consumed, generally 3-5%, and for a large-scale air compression station, the cost of air consumption is very remarkable. 2. For the blast heating regeneration adsorption dryer with large flow and zero gas loss, cooling water is generally used, the pipeline structure is complex, and the initial investment cost of the equipment is high. If the customer site does not have cooling water, the model cannot be used. 3. Many customers do not have high dew point requirements, and some industries use compressed air with a dew point of-20 ℃ enough to be used, and compressed air with a dew point of-40 ℃ or-70 ℃ is excessive for the customers.
Disclosure of Invention
The present invention is directed to a drying device and a drying method thereof suitable for large-flow compressed air, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a drying device suitable for large-flow compressed air: comprises an adsorption tower B1, an adsorption tower B2, an upper piping system connected with the tops of an adsorption tower B1 and an adsorption tower B2, a lower piping system connected with the bottoms of an adsorption tower B1 and an adsorption tower B2, and a heat dissipation device, wherein the upper piping system comprises a first three-way pipe 1, a second three-way pipe 2, a third three-way pipe 3 and a fourth three-way pipe 4,
the first three-way pipe 1 is respectively connected with an upper port of an adsorption tower B1, a one-way valve R1 and a one-way valve R3;
the second three-way pipe 2 is respectively connected with an upper port of an adsorption tower B2, a check valve R2 and a check valve R4;
the third three-way pipe 3 is respectively connected with a one-way valve R1, a one-way valve R2 and an outlet pipeline;
the fourth three-way valve 4 is respectively connected with a one-way valve R3, a one-way valve R4 and the outlet of a heater TH1, and an air filter FA and a blower G1 are connected in series at the inlet of the heater HT 1;
the lower piping includes a fifth three-way valve 5, a sixth three-way valve 6, a seventh three-way valve 7, and an eighth three-way valve 8; the fifth three-way valve 5 is respectively connected with the lower port of the adsorption tower B1, a valve K1 and a valve K3;
the sixth three-way valve 6 is respectively connected with the lower port of the adsorption tower B2, a valve K2 and a valve K4;
the seventh three-way valve 7 is respectively connected with a valve K1, a valve K2 and a compressed air inlet;
the eighth three-way valve 8 is respectively connected with a valve K3, a valve K4 and a regenerated gas outlet;
the valve K5 is respectively connected to the fifth three-way pipe 5 and the sixth three-way pipe 6;
the heat dissipation device is fixed on the tops of the first three-way pipe 1 and the second three-way pipe 2.
Preferably, a temperature sensor T2 is provided in the hot exhaust line.
Preferably, a temperature sensor T1 is provided on the outlet pipe, a muffler XS1 and a valve V1 are connected in series to the front end of the check valve R1, and a muffler XS2 and a valve V2 are connected in series to the front end of the check valve R2.
Preferably, the heat dissipation device is a heat dissipation fan.
A drying method of a drying device suitable for large-flow compressed air comprises the following steps:
1) adsorption
Wet compressed air enters a dryer adsorption tower B1 through an inlet valve K1, passes through an adsorption tower B1 filled with an adsorbent from bottom to top, water vapor is adsorbed by the desiccant, and the dried compressed air enters the rear end for use through an outlet valve R1;
2) handover
After the adsorbent in the adsorption tower B1 is saturated, the adsorbent needs to be regenerated, a switching process is started, firstly, a valve K2 is opened, then, a valve K1 is closed, compressed air flows through a valve K2, an adsorption tower B2 and a valve R2 and then flows out of a dryer, meanwhile, a valve V1 on one side of the adsorption tower B1 is opened, the compressed air in a barrel of the adsorption tower B1 is discharged through a silencer XS1, and the adsorption tower B1 is decompressed to atmospheric pressure;
3) regeneration/desorption
After the pressure of the adsorption tower B1 is relieved, a valve K3 is opened, a valve V1 is closed, at the moment, a blower G1 and a heater HT1 start to operate in sequence, air in the environment is sent to the heater HT1 at the rear end through a filter FA by the blower G1, the air is heated to a required desorption temperature, then high-temperature hot air enters the adsorption tower B1 from top to bottom through an R3 one-way valve, regeneration treatment (desorption treatment) is started, the air is discharged through the valve K3, and moisture is carried out of the dryer by the hot air at the fastest speed in the mode;
4) moderate temperature regeneration/desorption
With the regeneration, the moisture in the adsorption tower B1 is continuously reduced, the outlet temperature of the regeneration gas is continuously increased, when the temperature sensor T2 detects that the temperature reaches a specified value, the heater HT1 reduces the regeneration temperature, the regeneration is continuously carried out at the medium temperature until the moisture in the adsorption tower is evaporated and carried away, and the desorption process is finished;
5) cooling down
After regeneration is completed, the temperature of the adsorbent in the adsorption tower B1 is high, cooling is needed, a valve K3 is closed, a cooling fan F1 is started, a small flow of an adjustable valve K5 is opened, a small part of humid compressed air is taken as cooling air to be used for cooling the adsorption tower B1, the cooling air after temperature rise is cooled by a fan F1 at the top of the tower body, the cooling air and the main air flow are mixed after flowing through a one-way valve R1 and are jointly sent to the rear end, the flow is gradually adjusted by the adjustable valve K5 along with the continuous reduction of the temperature of the adsorption tower B1 until the temperature detected by a temperature sensor T1 is reduced to a specified value, and the cooling process is finished;
6) waiting for standby
After the cooling process is finished, the cooling fan F1 and the adjustable valve K5 are closed, and the adsorption tower B1 is reserved.
The invention has the technical effects and advantages that:
1. the invention ensures that the compressed air is close to zero loss through multi-stage cooling, has simple structure and meets the drying requirement of customers.
2. The whole working process of the invention has no finished product compressed air loss, thus saving valuable compressed air resources.
3. The invention does not need to use cooling water in the operation process, is convenient for the arrangement of a factory building of a client, reduces the requirement on the use condition and has wider application range.
4. The invention has the advantages of small quantity of control valves, simple and compact pipeline, low investment cost and high operation reliability.
5. The invention reduces the temperature of the medium-temperature compressed air by arranging the cooling fan at the top of the adsorption tower.
6. Through adjustable valve K5 and temperature sensor T1, realize the control of cooling compressed air mass flow, the skill guarantees the cooling effect, can guarantee again that cooling rate is very fast.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the drying process of the present invention;
in the figure: an adsorption tower B1, an adsorption tower B2, a first three-way pipe 1, a second three-way pipe 2, a third three-way pipe 3, a fourth three-way pipe 4, a five-way valve 5, a sixth three-way valve 6, a seventh three-way valve 7, an eighth three-way valve 8, a one-way valve R1, a one-way valve R2, a one-way valve R3, a one-way valve R4, a heater TH1, a valve K1, a valve K2, a valve K3, a valve K4, a valve K5, an air filter FA, a blower G1, a temperature sensor T1, a temperature sensor T2, a silencer XS1, a silencer XS2, a valve V1 and a valve V2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a specific embodiment of a drying device according to the invention, which is suitable for large flows of compressed air: comprises an adsorption tower B1, an adsorption tower B2, an upper piping system connected with the tops of an adsorption tower B1 and an adsorption tower B2, a lower piping system connected with the bottoms of an adsorption tower B1 and an adsorption tower B2, and a heat dissipation device, wherein the upper piping system comprises a first three-way pipe 1, a second three-way pipe 2, a third three-way pipe 3 and a fourth three-way pipe 4,
the first three-way pipe 1 is respectively connected with an upper port of an adsorption tower B1, a one-way valve R1 and a one-way valve R3;
the second three-way pipe 2 is respectively connected with an upper port of an adsorption tower B2, a check valve R2 and a check valve R4;
the third three-way pipe 3 is respectively connected with a one-way valve R1, a one-way valve R2 and an outlet pipeline;
the fourth three-way valve 4 is respectively connected with a one-way valve R3, a one-way valve R4 and the outlet of a heater TH1, and an air filter FA and a blower G1 are connected in series at the inlet of the heater HT 1;
the lower piping includes a fifth three-way valve 5, a sixth three-way valve 6, a seventh three-way valve 7, and an eighth three-way valve 8; the fifth three-way valve 5 is respectively connected with the lower port of the adsorption tower B1, a valve K1 and a valve K3;
the sixth three-way valve 6 is respectively connected with the lower port of the adsorption tower B2, a valve K2 and a valve K4;
the seventh three-way valve 7 is respectively connected with a valve K1, a valve K2 and a compressed air inlet;
the eighth three-way valve 8 is respectively connected with a valve K3, a valve K4 and a regenerated gas outlet;
the valve K5 is respectively connected to the fifth three-way pipe 5 and the sixth three-way pipe 6;
the heat dissipation device is fixed on the tops of the first three-way pipe 1 and the second three-way pipe 2.
Preferably, a temperature sensor T2 is provided in the hot exhaust line.
Preferably, a temperature sensor T1 is provided on the outlet pipe, a muffler XS1 and a valve V1 are connected in series to the front end of the check valve R1, and a muffler XS2 and a valve V2 are connected in series to the front end of the check valve R2.
Preferably, the heat dissipation device is a heat dissipation fan.
Fig. 1-2 show a specific embodiment of a drying method for a drying device suitable for large flows of compressed air: the method comprises the following steps:
1) adsorption
Wet compressed air enters a dryer adsorption tower B1 through an inlet valve K1, passes through an adsorption tower B1 filled with an adsorbent from bottom to top, water vapor is adsorbed by the desiccant, and the dried compressed air enters the rear end for use through an outlet valve R1;
2) handover
After the adsorbent in the adsorption tower B1 is saturated, the adsorbent needs to be regenerated, a switching process is started, firstly, a valve K2 is opened, then, a valve K1 is closed, compressed air flows through a valve K2, an adsorption tower B2 and a valve R2 and then flows out of a dryer, meanwhile, a valve V1 on one side of the adsorption tower B1 is opened, the compressed air in a barrel of the adsorption tower B1 is discharged through a silencer XS1, and the adsorption tower B1 is decompressed to atmospheric pressure;
3) regeneration/desorption
After the pressure of the adsorption tower B1 is relieved, a valve K3 is opened, a valve V1 is closed, at the moment, a blower G1 and a heater HT1 start to operate in sequence, air in the environment is sent to the heater HT1 at the rear end through a filter FA by the blower G1, the air is heated to a required desorption temperature, then high-temperature hot air enters the adsorption tower B1 from top to bottom through an R3 one-way valve, regeneration treatment (desorption treatment) is started, the air is discharged through the valve K3, and moisture is carried out of the dryer by the hot air at the fastest speed in the mode;
4) moderate temperature regeneration/desorption
With the regeneration, the moisture in the adsorption tower B1 is continuously reduced, the outlet temperature of the regeneration gas is continuously increased, when the temperature sensor T2 detects that the temperature reaches a specified value, the heater HT1 reduces the regeneration temperature, the regeneration is continuously carried out at the medium temperature until the moisture in the adsorption tower is evaporated and carried away, and the desorption process is finished;
5) cooling down
After regeneration is completed, the temperature of the adsorbent in the adsorption tower B1 is high, cooling is needed, a valve K3 is closed, a cooling fan F1 is started, a small flow of an adjustable valve K5 is opened, a small part of humid compressed air is taken as cooling air to be used for cooling the adsorption tower B1, the cooling air after temperature rise is cooled by a fan F1 at the top of the tower body, the cooling air and the main air flow are mixed after flowing through a one-way valve R1 and are jointly sent to the rear end, the flow is gradually adjusted by the adjustable valve K5 along with the continuous reduction of the temperature of the adsorption tower B1 until the temperature detected by a temperature sensor T1 is reduced to a specified value, and the cooling process is finished;
6) waiting for standby
After the cooling process is finished, the cooling fan F1 and the adjustable valve K5 are closed, and the adsorption tower B1 is reserved.
The 6 processes are a period, and the two adsorption towers of the dryer can reciprocate circularly according to the period, so that the quality of rear-end air supply is ensured.
The invention adopts the principle of multi-stage cooling, thereby not only ensuring that the compressed air is close to zero loss, but also having simple structure and meeting the drying requirements of customers.
The multi-stage cooling principle is as follows:
1. after the regeneration process is carried out a period of time, the dryer can enter the medium temperature regeneration process, the ambient air is heated to the medium temperature and enters the adsorption tower, the medium temperature air can slowly cool the adsorbent from the high temperature state to the medium temperature state, and the adsorbent does not have the adsorption performance at this moment, and the regeneration effect can not be influenced.
2. In the cooling stage, after the compressed air with small flow passes through the medium-temperature adsorbent, the temperature of the compressed air can be slowly reduced, the compressed air is heated to the medium temperature, and when the airflow reaches the top of the adsorption tower, the temperature of the airflow is further reduced under the action of the cooling fan.
3. At the outlet pipe 3 of the dryer, the low-flow medium-low temperature compressed air and the high-flow low-temperature compressed air are mixed, and the temperature is directly reduced to a reasonable range, so that the whole cooling process is realized.
The applicant further states that the present invention is described in the above embodiments to explain the implementation method and device structure of the present invention, but the present invention is not limited to the above embodiments, i.e. it is not meant to imply that the present invention must rely on the above methods and structures to implement the present invention. It should be understood by those skilled in the art that any modifications to the present invention, the implementation of alternative equivalent substitutions and additions of steps, the selection of specific modes, etc., are within the scope and disclosure of the present invention.
The present invention is not limited to the above embodiments, and all the ways of achieving the objects of the present invention by using the structure and the method similar to the present invention are within the protection scope of the present invention.

Claims (5)

1. The utility model provides a drying device suitable for large-traffic compressed air, includes adsorption column B1, adsorption column B2, connects the upper portion piping at adsorption column B1 and adsorption column B2 top, connects the lower part piping at adsorption column B1 and adsorption column B2 bottom, its characterized in that: the heat dissipation device is also included, the upper pipe system comprises a first three-way pipe (1), a second three-way pipe (2), a third three-way pipe (3) and a fourth three-way pipe (4),
the first three-way pipe (1) is respectively connected with an upper port of an adsorption tower B1, a one-way valve R1 and a one-way valve R3;
the second three-way pipe (2) is respectively connected with the upper port of the adsorption tower B2, a one-way valve R2 and a one-way valve R4;
the third three-way pipe (3) is respectively connected with a one-way valve R1, a one-way valve R2 and an outlet pipeline;
the fourth three-way valve (4) is respectively connected with a one-way valve R3, a one-way valve R4 and the outlet of a heater TH1, and an air filter FA and a blower G1 are connected in series at the inlet of the heater HT 1;
the lower piping system includes a fifth three-way valve (5), a sixth three-way valve (6), a seventh three-way valve (7), and an eighth three-way valve (8); the fifth three-way valve (5) is respectively connected with the lower port of the adsorption tower B1, a valve K1 and a valve K3;
the sixth three-way valve (6) is respectively connected with the lower port of the adsorption tower B2, a valve K2 and a valve K4;
the seventh three-way valve (7) is respectively connected with a valve K1, a valve K2 and a compressed air inlet;
the eighth three-way valve (8) is respectively connected with a valve K3, a valve K4 and a regenerated gas outlet;
the valve K5 is respectively connected to the fifth three-way pipe (5) and the sixth three-way pipe (6);
the heat dissipation device is fixed on the tops of the first three-way pipe (1) and the second three-way pipe (2).
2. Drying device suitable for high flows of compressed air according to claim 1, characterized in that: a temperature sensor T2 is mounted on the hot exhaust line.
3. Drying device suitable for high flows of compressed air according to claim 1, characterized in that: a temperature sensor T1 is provided on the outlet pipe, a muffler XS1 and a valve V1 are connected in series to the front end of the check valve R1, and a muffler XS2 and a valve V2 are connected in series to the front end of the check valve R2.
4. Drying device for high flows of compressed air according to claim 1, characterized in that: the heat dissipation device is a heat dissipation fan.
5. Drying method for drying devices suitable for high flows of compressed air according to any of claims 1 to 4, characterized in that: the method comprises the following steps:
1) adsorption
Wet compressed air enters a dryer adsorption tower B1 through an inlet valve K1, passes through an adsorption tower B1 filled with an adsorbent from bottom to top, water vapor is adsorbed by the desiccant, and the dried compressed air enters the rear end for use through an outlet valve R1;
2) handover
After the adsorbent in the adsorption tower B1 is saturated, the adsorbent needs to be regenerated, a switching process is started, firstly, a valve K2 is opened, then, a valve K1 is closed, compressed air flows through a valve K2, an adsorption tower B2 and a valve R2 and then flows out of a dryer, meanwhile, a valve V1 on one side of the adsorption tower B1 is opened, the compressed air in a barrel of the adsorption tower B1 is discharged through a silencer XS1, and the adsorption tower B1 is decompressed to atmospheric pressure;
3) regeneration/desorption
After the pressure of the adsorption tower B1 is relieved, a valve K3 is opened, a valve V1 is closed, at the moment, a blower G1 and a heater HT1 start to operate in sequence, air in the environment is sent to the heater HT1 at the rear end through a filter FA by the blower G1, the air is heated to a required desorption temperature, then high-temperature hot air enters the adsorption tower B1 from top to bottom through an R3 one-way valve, regeneration treatment (desorption treatment) is started, the air is discharged through the valve K3, and moisture is carried out of the dryer by the hot air at the fastest speed in the mode;
4) moderate temperature regeneration/desorption
With the regeneration, the moisture in the adsorption tower B1 is continuously reduced, the outlet temperature of the regeneration gas is continuously increased, when the temperature sensor T2 detects that the temperature reaches a specified value, the heater HT1 reduces the regeneration temperature, the regeneration is continuously carried out at the medium temperature until the moisture in the adsorption tower is evaporated and carried away, and the desorption process is finished;
5) cooling down
After regeneration is completed, the temperature of the adsorbent in the adsorption tower B1 is high, cooling is needed, a valve K3 is closed, a cooling fan F1 is started, a small flow rate of an adjustable valve K5 is opened, a small part of humid compressed air is taken as cooling air to be used for cooling the adsorption tower B1, the cooling air after temperature rise is cooled by a fan F1 at the top of the tower body, the cooling air and the main air flow are mixed after flowing through a one-way valve R1 and are jointly sent to the rear end, the flow rate of the adjustable valve K5 is gradually adjusted along with the continuous reduction of the temperature of the adsorption tower B1 until the temperature detected by a temperature sensor T1 is reduced to a specified value, and the cooling process is finished;
6) waiting for standby
After the cooling process is finished, the cooling fan F1 and the adjustable valve K5 are closed, the adsorption tower B1 is reserved,
the 6 processes are a period, and the two adsorption towers of the dryer can reciprocate circularly according to the period, so that the quality of rear-end air supply is ensured.
CN202210253083.XA 2022-03-15 2022-03-15 Drying device and drying method suitable for large-flow compressed air Pending CN114534457A (en)

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Application Number Priority Date Filing Date Title
CN202210253083.XA CN114534457A (en) 2022-03-15 2022-03-15 Drying device and drying method suitable for large-flow compressed air

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Publication Number Publication Date
CN114534457A true CN114534457A (en) 2022-05-27

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