KR101883736B1 - Hybrid type absorption air-drying system - Google Patents

Abstract

The present invention relates to a hybrid-type adsorption-type air dryer system, in which an adsorbent is accommodated therein and alternately, an air drying process and a regeneration process for regenerating and regenerating the adsorbent are performed, ; A compressor for compressing humid air introduced from the outside; A supply line for supplying the compressed air supplied from the compressor to the first tower and the second tower; A regeneration line branching from the supply line and moving the compressed air for adsorbent regeneration of the first tower and the second tower; A discharge line through which the dry air from which moisture is removed from the first tower and the second tower is discharged; A press-feeding line connected to the regeneration line, branched from the regeneration line, for transferring the dry air of the regeneration line by a blower to move the adsorbent for regenerating and regenerating the adsorbent in the first and second towers; A joining line for connecting the first tower and the second tower to the supply line and for moving the adsorbent regeneration heating or regeneration cooling of any one of the first tower and the second tower to the supply line, ; And a cooling regeneration line that branches from the supply line and is connected to the merging line and moves the compressed air of the supply line to be used for regenerative cooling of the first tower and the second tower, The regeneration cooling of the second tower is characterized in that either the cooling system through the pressure feed line or the cooling system through the cooling regeneration line is selectively used depending on the required dew point.

Description

HYBRID TYPE ABSORPTION AIR-DRYING SYSTEM [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid-type adsorption-type air dryer system, and more particularly, to a hybrid-type adsorption-type air dryer system capable of selecting and using an appropriate regeneration system as needed during reproduction of a tower.

Generally, an air dryer system for removing moisture contained in air is widely used for various automation equipment requiring dry air, a semiconductor manufacturing process, and a chemical process feeding line that causes a chemical reaction during moisture contact.

Such an air dryer system includes a freeze-type air dryer system that lowers the temperature of compressed air by using a refrigeration compressor, condenses the moisture contained in the compressed air to dehumidify, and the air dryer system that includes the desiccant (or dehumidifier, And a desiccant type air dryer system for desorbing and dehumidifying air.

An example of the adsorption type air dryer system related to the present invention is disclosed in Japanese Patent No. 10-1479662 entitled " Non-heater non-purge air drying system using compressed heat and air drying method ".

A conventional adsorption type air dryer system as disclosed includes a pair of adsorption towers in which an adsorbent is incorporated, a direction switching valve that changes the direction of the compressed air so that the dehumidification and the regeneration processes are performed alternately in the pair of adsorption towers, And a control section including a solenoid valve and a timer for controlling the operation of the valve.

Conventional adsorption type air dryer systems are classified into a heat adsorption type air dryer system for regenerating an adsorbent using a predetermined heat source according to a regeneration method of an adsorbent and a non-heat adsorption type air dryer system for regenerating an adsorbent using only regeneration air.

Further, the heat adsorption type air dryer system is a circulating heat adsorption type air dryer system (hereinafter, referred to as a non-purge type air dryer system) that recovers the adsorbent by circulating the compressed air in the compressor in accordance with reuse of the regeneration air And a non-circulating heat adsorption type air dryer system (hereinafter referred to as purge type air dryer system) for regenerating the adsorbent by drying air that has been compressed in the compressor and discharging the used air to the outside. .

In the conventional non-purge air dryer system, compressed air is circulated through the compressor to heat and regenerate the adsorbent. However, since the operating rate of the compressor is low, the compressed air of the compressor can not be used for heating and regenerating the adsorbent. In this case, the adsorbent of the adsorption column can not be regenerated, and the driving of the entire air dryer system may have to be stopped.

After the adsorption tower is heated and regenerated, a process of cooling and regenerating the overheated adsorption tower proceeds.

The conventional air dryer system can not change the regeneration mode as needed since the regeneration of the adsorption tower is performed in a predetermined manner and there is a limit to the regeneration in the case where the malfunction or the required dew point is different.

SUMMARY OF THE INVENTION An object of the present invention is to provide a hybrid type adsorption type air dryer system capable of selecting one of two regeneration methods according to a required dew point temperature.

It is another object of the present invention to provide a hybrid type adsorption type air dryer system capable of selecting a regeneration mode of an adsorbent according to the operating rate of a compressor.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the present invention can be achieved by a hybrid type adsorption type air dryer system. The hybrid type adsorption type air dryer system of the present invention comprises a first tower and a second tower in which an adsorbent is accommodated and alternate with each other to perform an air drying process and a regeneration process for regenerating and cooling and regenerating the adsorbent; A compressor for compressing humid air introduced from the outside; A supply line for supplying the compressed air supplied from the compressor to the first tower and the second tower; A heating regeneration line branching from the supply line and moving the compressed air for the adsorbent regeneration process of the first tower and the second tower; A discharge line through which the dry air from which moisture is removed from the first tower and the second tower is discharged; A pressure feeding line branched from the discharge line and connected to the heating and regenerating line, for transferring dry air of the discharge line by a blower to move the adsorbent for heating regeneration and cooling regeneration of the first and second towers; A joining line connecting the first tower and the second tower to the supply line and moving the air that has undergone the adsorbent heating regeneration or cooling regeneration of either the first tower or the second tower to the supply line; ; And a cooling regeneration line that branches from the supply line and is connected to the merging line and moves the compressed air of the supply line to be used for cooling regeneration of the first tower and the second tower, The cooling regeneration of the second tower is characterized in that either a cooling system through the pressure feed line or a cooling system through the cooling regeneration line is selectively used depending on the required dew point.

According to one embodiment, the adsorbent heating / regeneration of the first tower and the second tower is performed by using a method of using compressed air supplied from a compressor through the heating / regenerating line and a method of using dry air pumped to the pressure- Any one of the schemes may optionally be used.

According to an embodiment of the present invention, a pair of tower lower connection lines and a pair of tower upper connection lines are provided at upper and lower portions of the first tower and the second tower, respectively, The connection line is provided with a downward directional control valve for controlling the direction of air movement and the pair of upper connection lines of the tower may be provided with an upward directional control valve for controlling the direction of air movement.

According to one embodiment, the heating and regenerating line is provided with a heater for heating the air, and the merging line may include a cooler for cooling the air and a separator for separating and removing moisture in the air.

The hybrid type adsorption type air dryer system according to the present invention has two cooling regeneration methods and two heating regeneration methods and implements a hybrid method that can be selectively used depending on the situation.

Accordingly, the regeneration mode can be selected according to the operating rate of the compressor, and the regeneration mode can be selected according to the failure of the blower and the required temperature of the dew point.

According to such a driving method, the hybrid type adsorption type air dryer system according to the present invention can exhibit the best performance and energy saving effect.

1 is a schematic view showing a configuration of a hybrid type adsorption type air dryer system according to the present invention,
FIG. 2 is a schematic view showing a process of regenerating an adsorbent in a second tower of a hybrid-type adsorption-type air dryer system according to the present invention by a heating /
FIG. 3 is a schematic view showing a process of regenerating an adsorbent by a heating / regenerating method using a blower in a second tower of a hybrid type adsorption type air dryer system according to the present invention;
4 is a schematic view showing a process of regenerating an adsorbent by a cooling regeneration method using a blower in a second tower of a hybrid type adsorption type air dryer system according to the present invention,
FIG. 5 is a schematic view showing a process of regenerating an adsorbent by a cooling regeneration method in which a second tower of a hybrid-type adsorption-type air dryer system according to the present invention is not used as a blower;
FIG. 6 is a schematic view showing a process of regenerating an adsorbent in a first tower of a hybrid-type adsorption-type air dryer system according to the present invention by a heating regeneration method without using a blower,
7 is a schematic view showing a process of regenerating a first tower of a hybrid type adsorption type air dryer system according to the present invention by a cooling regeneration method using a blower.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 is a schematic view schematically showing a configuration of a hybrid type adsorption type air dryer system 1 according to the present invention.

The hybrid type adsorption type air dryer system (1) according to the present invention has a heating type structure in which air heated in a compressor is supplied to a tower and is used for regenerating an adsorbent, and the branched air is used for a heating regeneration process or a cooling regeneration process, A hybrid type combining a non-purging operation method using compressed heat used for producing air and a blower non-purging operation method using a blower when compressed heat is not used is implemented.

Thus, the hybrid type adsorption type air dryer system 1 according to the present invention can selectively use two methods for heating and regenerating the adsorbent of the towers 110 and 110a, Method can be selectively used.

That is, a method of heating and regenerating the adsorbent of the towers 110 and 110a using the compressed heat of the compressed air A compressed by the compressor 120 for regenerating the adsorbent, and a method of heating and regenerating the adsorbent of the towers 110 and 110a, A method of heating up the adsorbent of the towers 110 and 110a by heating the air A 'using the blower 153 and then heating it with the heater 143 may be selectively used in consideration of the conditions of use.

Also, it is possible to selectively use either the method of using the dried air A 'after the drying process according to the dew point temperature required for regenerating the adsorbent and the method of using the compressed air A compressed by the compressor 120 .

To this end, the hybrid type adsorption type air dryer system 1 according to the present invention comprises two towers 110 and 110a in which an adsorbent is contained, a compressor 120 for compressing humid air flowing from the outside, a compressor 120, A supply line 130 for supplying the compressed air A from the supply line 130 to the two towers 110 and 110a and the compressed air compressed by the compressor 120 to the towers 110 and 110a A heating regeneration line 140 for supplying and regenerating the adsorbent, a discharge line 170 for discharging the dry air A 'adsorbed in the first tower 110 and the second tower 110a to the outside, Is branched from the discharge line 170 and connected to the heating regeneration line 140 and the dry air of the discharge line 170 is sent by the blower 153 to regenerate and cool the first and second towers 110a And the first tower 110 and the second tower 110a and the supply line 130 are connected to each other A joining line 161 for moving the air having undergone heating / regenerating or cooling / regenerating the adsorbent of the first tower 110 and the second tower 110a to the supply line 130, And a cooling regeneration line 160 which is branched and connected to the merging line 161 and moves the compressed air of the supply line 130 to be used for cooling regeneration of the first tower 110 and the second tower 110a.

Here, the drying process used in the detailed description of the present invention refers to an operating state in which the drying air A 'is produced by adsorbing moisture in the compressed air A compressed by the compressor 120, And then the adsorbent is supplied to the towers 110 and 110a to desorb water adsorbed in the adsorbent in the towers 110 and 110a to regenerate the adsorbent. The cooling regeneration is performed in the towers 110 and 110a, And the adsorbent is regenerated while cooling the adsorbent.

The drying process and the heating regeneration / cooling regeneration process proceed simultaneously in the first tower 110 and the second tower 110a. For example, during the drying process of the first tower 110, the heating regeneration and cooling regeneration progresses sequentially in the second tower 110a. On the contrary, during the drying operation of the second tower 110a, 110, the heating regeneration and the cooling regeneration sequentially proceed.

The first tower 110 and the second tower 110a adsorb moisture contained in humid air to dry air. The first tower 110 and the second tower 110a are formed in a closed cylindrical shape. An adsorbent is filled in the first tower 110 and an inlet and an outlet are provided in an upper portion and a lower portion, respectively. Thermometers a and c and a pressure gauge b are provided in the first tower 110 and the second tower 110a, respectively.

The adsorbent to be filled in the first tower 110 and the second tower 110a may be Activated Alumina, Silica Gel, Alumina Silica Gel or Molecular Sieves.

Each of the first tower 110 and the second tower 110a is alternately used by being used for the regeneration tower and the dehumidification tower.

Tower lower connection lines 111 and 111a and tower upper connection lines 113 and 113a are provided at the lower and upper portions of the first and second towers 110 and 110a, respectively. Humid air is introduced or dry air is discharged through the tower lower connection lines 111 and 111a and the tower upper connection lines 113 and 113a.

At this time, downward directional control valves 115a, 115b, 115c, and 115d are provided between the pair of tower lower connection lines 111 and 111a, and an upward directional control valve (not shown) is provided between the pair of tower upper connection lines 113 and 113a. 117a, 117b, 117c, and 117d. The lower directional change-over valves 115a, 115b, 115c and 115d are respectively coupled to four directions of the lower valve connecting line 115 so as to adjust the path of the air. The lower valve connection line 115 is arranged to be connected to the supply line 130 and the side connection line 113b.

The upper directional control valves 117a, 117b, 117c, and 117d are respectively coupled to the four valve connection lines 117 in four directions to control the air flow path. The upper directional control valves 117a, 117b, 117c and 117d are connected to the tower upper connection lines 113 and 113a, the heating regeneration line 140 and the discharge line 170 to regulate the air flow path.

The compressor 120 is located at the foremost end of the hybrid type adsorption type air dryer system 1 and compresses the humid air introduced from the outside to a predetermined pressure (about 7.0 kg / cm 2). The compressor 120 may be a conventional screw type compressor or a turbo type compressor.

Compressed heat of about 150 ° C is generated in compression of a screw type compressor, and compressed heat of about 120 ° C is generated in a turbo type compressor. Accordingly, the compressed air compressed through the compressor 120 has a temperature of about 120 to 150 ° C.

The compressor 120 is capable of dividing the compressed humid air and supplying it to the supply line 130 and the heating regeneration line 140. A portion of the humid air compressed by the compressor 120 is supplied to the towers 110 and 110a through the supply line 130 and dried and the remainder of the compressed humid air is supplied to the heating regeneration line 140, 110 and 110a.

At this time, the ratio of the air supplied to the heating regeneration line 140 among the compressed air produced by the compressor 120 may be 30 to 40% of the total compressed air. The rate at which the air discharged from the compressor 120 is distributed to the supply line 130 and the heating regeneration line 140 can be controlled by a flow control valve (not shown) or an orifice (not shown).

The supply line 130 extends from the compressor 120 to the lower valve connection line 115. The supply line 130 is provided with a first opening / closing valve 131 for opening and closing the path for moving the humid air discharged from the compressor 120 to the lower valve connecting line 115. The supply line 130 and the lower valve connection line 115 are joined at the first junction 133.

On the other hand, on the path of the supply line 130, a first branch point 135 at which the cooling regeneration line 160 branches is provided. The humid air in the supply line 130 is moved to the cooling regeneration line 160 starting from the first branch point 135.

Further, on the path of the supply line 130, a second junction point 136 where the merging line 161 is merged is provided. The air used for cooling the second tower 110a of the first tower 110 is joined to the supply line 130 through the second confluence point 136. [

The heating regeneration line 140 extends from the compressor 120 to the third confluence 148 of the confluent line 161. The heating regeneration line 140 is a path through which the air having the compressed heat discharged from the compressor 120 is moved. A second on-off valve 141 for interrupting the movement of air, a third on-off valve 145 for interrupting the movement of air to the upper valve connecting line 117, And a fourth on-off valve 147 for interrupting the movement of the air to the second on-off valve 147 in sequence.

The heating / regenerating line 140 is provided with a heater 143 for heating air to be supplied to the towers 110 and 110a. The heater 143 serves to further raise the temperature of the air to be used for the regeneration of the adsorbent up to the target temperature. The compressed air compressed by the compressor 120 has a temperature of about 120 to 150 ° C. The temperature of the compressed air is increased in the range of 120 ° C to 250 ° C via the heater 143.

The heater 143 is turned on / off by the control of the control unit (not shown) according to the reproduction path. The temperature of the compressed air heated by the heater 143 depends on the kind of the adsorbent incorporated in the towers 110 and 110a. For example, regeneration air at 185 to 205 ° C is required for heating and regenerating activated alumina, and regeneration air at 120 to 150 ° C is required for heating and regenerating the silica gel. In order to regenerate the molecular sludge, Regeneration air at 210 to 230 ° C is required.

The press transfer line 150 is connected to the discharge line 170 and the heating regeneration line 140. The pressure feeding line 150 is selectively used for the heating regeneration process or the cooling regeneration process of the towers 110 and 110a under the control of the control unit (not shown). That is, the pressure conveying line 150 forms a path for conveying the dry air discharged from the discharge line 170 to the towers 110 and 110a, as shown in FIG. 3, for heating and regenerating the towers 110 and 110a. In addition, the press transfer line 150 forms a path for transferring the dry air to the towers 110 and 110a, as shown in Fig. 4, for cooling the towers 110 and 110a.

A blower 153 is provided on the pressure feeding line 150. When the blower 153 is driven, part of the dry air that has been discharged to the discharge line 170 by the negative pressure generated by the driving of the blower 153 is sent to the pressure transfer line 150.

A fifth open / close valve 155 that opens and closes the path so that the air pressure-fed by the blower 153 is moved toward the heater 143; Closing valve 157 for opening and closing the bypass line 158 to be moved to the towers 110 and 110a without passing through the bypass line 158. [ The bypass line 158 is arranged to connect the rear end of the blower 153 and the rear end of the heater 143 of the heating and regenerating line 140 among the pressure feeding lines 150, Closing valve 157 is opened, the air pressure-fed by the blower 153 is moved to the tower 110a without passing through the heater 143 as shown in FIG.

The cooling regeneration line 160 forms a path through which air used for cooling regeneration of the towers 110 and 110a is moved. The cooling regeneration line 160 may be used to join the air used to heat regenerate the towers 110 and 110a to the supply line 130 as shown in Figures 2-4, Is used for branching a part of the compressed air moving along the supply line 130 for cooling regeneration of the tubes 110 and 110a and supplying it to the towers 110 and 110a.

The cooling regeneration line 160 is connected to the side connection line 113b formed on the side of the second tower 110a and connected to the first branch point 135 of the supply line 130. [ The cooling regeneration line 160 is coupled to a merging line 161 that branches from the cooling regeneration line 160 and is connected to the supply line 130. The joining line 161 is provided with a seventh opening / closing valve 163 for interrupting the passage of the air moving along the cooling regeneration line 160 to the joining line 161, A cooler 165 for condensing moisture by cooling the humid air, and a separator 167 for separating and removing moisture contained in the air.

5, the cooling regeneration line 160 is provided with an eighth opening / closing valve 168 for opening / closing a path for allowing a part of the compressed air moving through the supply line 130 to flow into the cooling regeneration line 160, .

The operation of the hybrid type adsorption type air dryer system 1 according to the present invention having such a configuration will be described with reference to FIGS. 1 to 7. FIG.

2 to 5 show a state in which the first tower 110 of the hybrid type adsorption type air dryer system 1 according to the present invention is in a production operation for drying air and the second tower 110a is in a state And Fig.

Here, the solid line shown in Figs. 2 to 7 represents the flow of air for the drying process, and the hatch line represents the flow of air for regenerative heating or regenerative cooling.

2 shows that approximately 70% of the compressed air A compressed by the compressor 120 is transferred to the first tower 110 along the supply line 130 and approximately 30% And is moved to the heating regeneration line 140 for heating regeneration. In this case, the compressed heat of the compressor 120 is used for heating and regenerating the second tower 110a.

At this time, the power supply to the blower 153 is interrupted, and the heater 143 is turned on, and the second on-off valve 141, the third on-off valve 145, and the seventh on-off valve 163 are opened. The fourth on-off valve 147, the fifth on-off valve 155, the sixth on-off valve 157, and the eighth on-off valve 168 are closed.

The compressed air A moved along the supply line 130 is moved from the first branch point 135 to the lower valve connecting line 115 side. The first downward directional control valve 115a is opened and the second downward directional control valve 115b and the third downward directional control valve 115c are closed so that the compressed air A flows through the first tower lower connection line 111, And is contacted with the adsorbent and dried.

The dry air that has been dried in the first tower 110 is discharged through the first tower upper connection line 113 and discharged through the discharge line 170 by the third upward directional changeover valve 117c. Dry air production of the first tower 110 proceeds in a bottom-up manner.

On the other hand, the compressed air (A) supplied to the heating / regenerating line (140) in the compressor (120) is transferred to the heater (143) by the opened second opening / closing valve (141). The temperature of the air is raised by the heater 143 depending on the kind of the adsorbent. The warmed air is diverted by the opening of the second up directional switching valve 117b and supplied to the upper part of the second tower 110a through the second tower upper connecting line 113a.

The compressed air flowing into the second tower 110a desorbs the moisture of the adsorbent built in the second tower 110a and performs the heating and regeneration process. The compressed air flows into the second tower lower connection line 111b. The air is moved along the cooling regeneration line 160 through the lower valve connection line 115 and the side connection line 113b by the second tower lower connection line 111b and the opened fourth downward directional switch valve 115d do. At the fourth branching point 162, the refrigerant is moved to the confluence line 161 and the refrigerant is separated from the second confluence point 136 to the supply line 130 in a state where the cooler 165 and the separator 167 cool and separate the water Respectively.

That is, the air that has undergone the regeneration heating process in the second tower 110a joins the new compressed air supplied from the compressor 120 to the first tower 110 through the supply line 130, ). ≪ / RTI > Here, the heating and regenerating process of the second tower 110a is performed in a top-down manner.

3, when the operating rate of the compressor 120 is approximately 30% or less and the compressed heat of the compressed air supplied from the compressor 120 can not be used for heating / regenerating the second tower 110a, FIG. 4 is a view illustrating a heating and regenerating process of the heat exchanger 110a.

In this case, since the compressed heat of the compressor 120 can not be used, the regeneration heating process of the adsorbent proceeds using the dry air A 'discharged through the discharge line 170.

At this time, the blower 153 is powered and driven, and the third on-off valve 145, the fifth on-off valve 155, and the seventh on-off valve 163 are opened. Then, the second opening / closing valve 141, the fourth opening / closing valve 147, the sixth opening / closing valve 157, and the eighth opening / closing valve 168 are closed.

The production process of the first tower 110 proceeds in the same manner as in Fig. On the other hand, for regenerative heating of the second tower 110a, a certain rate (for example, 10%) of dry air A 'is transferred from the discharge line 170 to the press transfer line 150. The dry air A 'is moved along the press-feeding line 150 by the negative pressure generated by the driving of the blower 153 and is heated by the fifth open / close valve 155 through the fourth junction 152, And is moved along the reproduction line 140.

The drying air A 'is raised to the desired temperature in the heater 143 of the heating regeneration line 140 and the upper valve connecting line (A') is opened by opening the fourth up directional switching valve 117a, 117b, 117c, 117, and flows into the upper portion of the second tower 110a through the second tower upper connection line 113a.

After the drying air A 'is used for heating and regenerating the second tower 110a, the dry air A' is discharged to the lower portion of the second tower 110a, and the side connection line 113b, the cooling regeneration line 160, 161 to the supply line 130.

FIG. 4 is an exemplary view showing a process in which the cooling / regenerating process proceeds after the heating / regeneration process of the second tower 110a is completed. FIG. 4 shows a case where the second tower 110a is cooled and regenerated by using the dry air A 'discharged through the discharge line 170 when a superhigh point of about -100 ° C. or more is required.

In this case, the blower 153 is turned on, the heater 143 is turned off, the sixth open / close valve 157 and the seventh open / close valve 163 are opened, and the second open / close valve 141, The fourth on-off valve 147, the fifth on-off valve 155, and the eighth on-off valve 168 are closed.

The production process of the dry air is the same as in FIG. 2 and FIG. A part of the dry air A 'discharged through the discharge line 170 is moved to the pressure feeding line 150 by driving the blower 153. The dry air A 'is moved through the heating regeneration line 140 since the sixth on-off valve 157 is opened and the fifth on-off valve 155 is closed. The second upward directional control valve 117b is opened and the dry air A 'flows into the upper portion of the second tower 110a through the second tower upper connection line 113a.

The dry air A 'is cooled and regenerated inside the second tower 110a and joined to the supply line 130 via the cooling regeneration line 160 and the merging line 161.

5 is an exemplary diagram showing another method of cooling and regenerating the second tower 110a. The cooling regeneration mode shown in Fig. 5 can be selectively used when the blower 153 fails or malfunctions occur, or when the required dew point temperature is approximately -70 ° C.

The cooling regeneration method of FIG. 4 is a top-down method, while the cooling regeneration method of FIG. 5 is a down-up method.

In this case, the blower 153 is off, the heater 143 is off, the fourth opening / closing valve 147 and the eighth opening / closing valve 168 are opened, and the second opening / closing valve 141, ), The fifth opening / closing valve 155, the sixth opening / closing valve 157, and the seventh opening / closing valve 163 are closed.

Some of the compressed air moving through the supply line 130 for cooling regeneration of the second tower 110a is moved along the cooling regeneration line 160 by opening the eighth open / close valve 168. [ At this time, the compressed air which is branched to the cooling regeneration line 160 is adjusted at a rate of 10 to 20%. Although not shown in the drawing, the first branch point 135 may include a flow control valve or an orifice.

The compressed air that has branched to the cooling regeneration line 160 is transferred to the lower valve connecting line 115 via the side connecting line 113b. As the fourth downward selector valve 115d is opened, the compressed air flows upward from the lower portion of the second tower 110a through the second tower lower connection line 111a.

The compressed air that has cooled the second tower 110a is moved along the heating regeneration line 140 by opening the fourth opening and closing valve 147 and merged into the confluence line 161 at the third confluence point 148 And joins to the supply line 130 via the cooler 165 and the separator 167.

6 and 7 illustrate an example of a case where the first tower 110 proceeds in the regeneration process and the second tower 110a proceeds in the drying process in the hybrid type adsorption type air dryer system 1 of the present invention to be.

As shown in FIGS. 2 to 5, after the first tower 110 performs the drying process and the second tower 110a performs the regeneration process, the tower conversion proceeds. That is, the regeneration process of the first tower 110 proceeds and the drying process of the second tower 110a proceeds.

The tower changeover is maintained in the same remaining operating condition and the flow of each valve through the drive control of the downward directional changeover valves 115a, 115b, 115c and 115d and the upward directional changeover valves 117a, 117b, 117c and 117d is changed ≪ / RTI >

FIG. 6 is a view illustrating a method in which the first tower 110 is heated and regenerated using the compressed heat in the same manner as FIG. A part of the compressed air A supplied from the compressor 120 is supplied to the second tower 110a through the supply line 130 and the first tower lower connection lines 111 and 111a to absorb moisture Removed. The moisture-free dry air A 'is discharged to the outside through the second tower upper connection lines 113 and 113a and the discharge line 170.

The remaining compressed air A branched from the compressed air A supplied from the compressor 120 is moved through the regeneration line 140 and then moved to the first tower 110 by the temperature of the heater 143 . The high temperature and high humidity air adsorbing moisture of the adsorbent of the first tower 110 and heating and regenerating the adsorbent is passed through the first tower lower connection line 111, the lower valve connection line 115 and the side connection line 113b Is moved to the cooling regeneration line (160). And merged into the supply line 130 through the merging line 161. [

7 is an exemplary view showing a process in which the first tower 110 is cooled and regenerated. FIG. 7 shows a method of cooling and regenerating by using the blower 153 in the same manner as in FIG.

As shown in FIG. 6, the air drying process of the second tower 110a proceeds in the same manner as in FIG. The cooling and regeneration process of the first tower 110 is performed such that the dry air A 'branched from the discharge line 170 flows through the pressurization line 150 and the heating regeneration line 140 and the first tower upper connection line 113 And is supplied to the first tower 110.

The air cooled and regenerated in the first tower 110 is moved through the first tower lower connection line 111 and the lower valve connection line 115 and the side connection line 113b and the cooling regeneration line 160. Then, the refrigerant is merged into the supply line 130 via the condenser 165 and the separator 167 through the condenser line 161.

As described above, the hybrid type adsorption type air dryer system according to the present invention has two cooling regeneration methods, two heating regeneration methods, and a hybrid method that can be selectively used depending on the situation.

Accordingly, it is possible to select the heating regeneration mode according to the operating rate of the compressor, and to use the cooling regeneration mode according to the failure of the blower and the required dew point temperature.

According to such a driving method, the hybrid type adsorption type air dryer system according to the present invention can exhibit the best performance and energy saving effect.

The embodiments of the hybrid type adsorption-type air dryer system of the present invention described above are merely illustrative and those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: Hybrid type adsorption type air dryer system
110, 110a: a first tower, a second tower
111, 111a: tower lower connecting line
113, 113a: Tower connection line
113b: side connection line
115: Lower valve connecting line
115a, 115b, 115c, and 115d:
117: Upper valve connection line
117a, 117b, 117c, 117d: Upward direction switching valve
120: compressor 130: supply line
131: first opening / closing valve 133: first confluence point
135: first branch point 136: second merge point
140: regeneration line 141: second opening / closing valve
143: heater 145: third opening / closing valve
147: fourth opening / closing valve 148: third confluence point
150: pressure feed line 151: third branch point
152: fourth confluence point 153: blower
155: fifth open / close valve 156: fifth confluence point
157: sixth opening / closing valve 160: cooling regeneration line
161: joining line 162: fourth branching point
163: Seventh open / close valve 165: Cooler
167: Separator 168: 8th opening / closing valve
170: discharge line

Claims (4)

A first tower and a second tower in which an adsorbent is accommodated and alternate with each other to perform an air drying process and a regeneration process for regenerating and regenerating the adsorbent;
A compressor for compressing humid air introduced from the outside;
A supply line for supplying the compressed air supplied from the compressor to the first tower and the second tower;
A heating regeneration line branching from the supply line and moving the compressed air for the adsorbent regeneration process of the first tower and the second tower;
A heater for heating the air moving along the heating / regenerating line;
A discharge line through which the dry air from which moisture is removed from the first tower and the second tower is discharged;
A press-feeding line branched from the discharge line and connected to the heating and regenerating line, for transferring the dry air of the discharge line by a blower to move for heat regeneration and cooling regeneration of the first and second towers;
A joining line for connecting the first tower and the second tower to the supply line and for moving the air that has undergone the heating regeneration or the cooling regeneration of one of the first tower and the second tower to the supply line, and;
A cooling regeneration line that is branched from the supply line and is connected to the merging line and moves the compressed air of the supply line to be used for cooling regeneration of the first tower and the second tower;
A pair of tower lower connection lines and a pair of tower upper connection lines which are provided respectively at upper and lower portions of the first tower and the second tower,
A lower direction switching valve provided in the pair of tower lower connection lines for adjusting a moving direction of air;
An upper direction switching valve provided on the pair of tower upper connecting lines for adjusting the moving direction of the air;
A cooler installed in the merging line for cooling air;
A separator installed in the merging line for separating and removing moisture in the air;
A fifth open / close valve for opening / closing the path of the pressure feeding line so that the air pressure-fed by the blower is moved toward the heater;
A bypass line connecting the rear end of the blower and the rear end of the heater among the heating and regenerating lines among the pressure feeding lines;
And a sixth opening and closing valve that opens and closes the path of the bypass line so that the air pressure-fed by the blower is moved to the tower without passing through the heater,
The cooling regeneration of the first tower and the second tower may be performed by either one of a cooling method through the press-feeding line or a cooling method through the cooling regeneration line depending on a required dew point,
Wherein the heating and regeneration of the first tower and the second tower is performed by either one of using a compressed air supplied from a compressor through the heating and regenerating line and a system using dry air fed from the discharge line through the press- Characterized in that it is used in an air dryer system of a hybrid type. delete delete delete

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