TWM520129U - Thermal energy recycling type dryer - Google Patents

Description

Thermal energy recovery adsorption dryer

This creation is about air dehumidification drying and desorption regeneration technology. More specifically, it relates to a thermal energy recovery adsorption dryer that uses thermal energy generated by a compressor and compressed air to cool.

At present, the heat recovery adsorption dryer mainly consists of two adsorption tanks (one performing adsorption, one performing regeneration), an air compressor, a cooler, a condensing separator, a connecting pipeline, a control valve, a booster blower and the like. In operation, the two adsorption tanks alternately operate adsorption and regeneration intermittently, that is, when one performs the work of adsorption dehumidification, the other performs the regeneration of the internal adsorbent, and the compressed hot air generated by the air compressor can put the adsorbent on the adsorbent. The moisture is taken away, and in order to cool the air that is discharged from the adsorption tank, it is generally practiced to provide a booster blower, and the adsorbed dry air is extracted by the booster blower, cooled by the cooler, and then introduced into the adsorption to be cooled. In the barrel, the cooling effect is achieved. Finally, when the adsorption of the adsorption tank is completed and the regeneration of the regeneration tank is completed, the corresponding butterfly valve of the adsorption tank outlet line can be closed by the electric program control, and the outlet pipeline of the regenerated bucket can be opened, that is, the work of the two is exchanged. The original adsorption barrel begins to dry and regenerate, and the adsorption barrel that originally performed regeneration starts to perform adsorption work, that is, alternate work.

However, there is still room for improvement in the above structure, and the disadvantage of this structure is that The pressure dew point that can be reached is limited, and can only reach -20 °C, which will result in poor quality of dry compressed air, and there will be disadvantages such as large surge of pressure dew point temperature when switching between two barrels. The booster blower is used to extract dry air for cooling, which will lengthen the operation time of the booster blower and also cause energy consumption.

In order to solve the defects and problems of the aforementioned heat energy recovery adsorption dryer, the present invention proposes a secondary heating process for the air entering the adsorption regeneration drum for performing regeneration to enhance the drying degree of the adsorbent.

In addition, another object of the present invention is to change the position of the cooler to reduce the excessive operation of the booster blower in order to extract the adsorbed dry air.

In order to solve the above technical problems and achieve the above object, the present invention proposes a heat energy recovery adsorption dryer which is connected to an air compressor which provides hot compressed air, and the heat energy recovery adsorption dryer comprises: a first adsorption regeneration tank, Performing adsorption and dehumidification of the gas by the first adsorbent inside thereof or for performing regeneration of the first adsorbent; and second adsorbing the regeneration tank by performing adsorption and dehumidification of the gas by the second adsorbent inside thereof or for performing Regenerating the second adsorbent, wherein the first adsorption regeneration tank and the second adsorption regeneration barrel are switchably performing a dehumidification and regeneration operation, and wherein the air compressor, the first adsorption regeneration barrel, and the The second adsorption regeneration barrels are connected to each other through a pipeline; and the first cooler and the second cooler are disposed between the air compressor and the first adsorption regeneration tank and the second adsorption regeneration barrel On the road, at the beginning of the operation of the dehumidification and regeneration, the hot compressed air After the first cooler and the second cooler are cooled, the first adsorption regeneration bucket is entered to perform adsorption dehumidification of the first adsorption regeneration tank, and the hot compressed air of the air compressor is not subjected to the first cooling. The second cooler is transferred to the second adsorption regeneration tank to perform a first heating regeneration process of the second adsorption regeneration tank.

In one embodiment, the thermal energy recovery adsorption dryer further includes a heater disposed on the outlet between the outlet of the thermal energy recovery adsorption dryer and the second adsorption regeneration tank for heating from the first The compressed air discharged from the regeneration tub is adsorbed, and the heated compressed air is sent to the second adsorption regeneration drum to perform a second heating regeneration process of the second adsorption regeneration drum.

In another embodiment, the thermal energy recovery adsorption dryer further includes a booster blower disposed on the pipeline between the heater and the outlet of the thermal energy recovery adsorption dryer for recycling the heat energy. The compressed air at the outlet of the dryer is directed to the heater.

In another embodiment, after the second heating regeneration process is completed, the hot compressed air of the air compressor is cooled by the first cooler and then sent to the second adsorption regeneration bucket to perform the second adsorption. Cooling process for regenerative barrels.

In still another embodiment, after the first adsorption regenerative barrel and the second adsorption regeneration barrel perform a switching procedure, the hot compressed air of the air compressor is cooled by the first cooler and the second cooler. Simultaneously transferring to the second adsorption regeneration tank and the first adsorption regeneration barrel to perform a parallel adsorption process of the second adsorption regeneration tank and the first adsorption regeneration barrel.

Compared with the prior art, the heat recovery waste adsorption dryer of the present invention will The cooler is arranged at the outlet of the air compressor, so that it is not necessary to extract the dried air after adsorption by the supercharger to cool, so the operation time of the booster blower can be reduced, and the energy consumption is greatly saved, which can make the air compressor The choice is more flexible, that is, the heat recovery adsorption dryer can be combined with the air compressor with its own cooling system, or the air compressor without cooling system. In addition, the secondary heating process is beneficial to enhance the drying effect of the adsorbent, and the parallel adsorption process can be performed before switching between the two adsorption regeneration barrels for performing adsorption and regeneration, which will help the pressure dew point temperature to reach a certain level or less. Can effectively improve the quality of dry compressed air.

1‧‧‧ Thermal energy recovery adsorption dryer

11‧‧‧ adsorption bucket

12‧‧‧Recycled barrel

13‧‧‧First cooler

14‧‧‧Second cooler

15‧‧‧heater

16‧‧‧Supercharged air blower

17‧‧‧First Condensation Separator

18‧‧‧Second condensate separator

2‧‧‧Air compressor

K1~K13‧‧‧Butter Valve

The heat recovery adsorption dryer of the present invention will be further described below in conjunction with the drawings and embodiments.

The first picture is a schematic diagram of the adsorption regeneration barrel performing the adsorption function in the heat recovery adsorption dryer of the present invention; the second figure is a schematic diagram of the adsorption regeneration barrel performing the regeneration function in the heat recovery adsorption dryer of the present invention; The third figure is a schematic diagram of the second heating regeneration process of the adsorption regeneration drum which performs the regeneration function in the heat recovery waste adsorption dryer of the present invention; the fourth figure is the regeneration function performed in the heat recovery waste adsorption dryer of the present invention. Schematic diagram of the adsorption process of the adsorption regeneration drum; FIG. 5 is a schematic diagram of the parallel adsorption process before the switching process is performed in the heat recovery adsorption dryer of the present invention; and FIG. 6 is the thermal energy recovery adsorption drying of the creation Schematic diagram of the execution state after the two adsorption regenerators are switched.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily appreciate other advantages and functions of the present invention from the disclosure of the present disclosure. The present invention can also be implemented or applied by various other specific embodiments. The details of the present specification can also be modified and changed without departing from the spirit and scope of the present invention.

The heat recovery adsorption dryer of the present invention is connected to an air compressor that provides hot compressed air, and the heat recovery adsorption dryer includes a first adsorption regeneration barrel, a second adsorption regeneration barrel, a first adsorption regeneration barrel and a second adsorption regeneration. The inside of the barrel has adsorption and dehumidification of the adsorbent gas, and the first adsorption regeneration barrel and the second adsorption regeneration barrel are used for performing regeneration of the adsorbent, and the first adsorption regeneration barrel and the second adsorption regeneration barrel are switchably performing dehumidification and The operation of regeneration. For convenience of explanation, the following description will be carried out by performing adsorption dehumidification in the first adsorption regeneration barrel and performing regeneration on the second adsorption regeneration barrel, that is, the adsorption regeneration barrel performing adsorption dehumidification is called an adsorption barrel, and the adsorption regeneration barrel performing regeneration is called For recycling barrels.

As shown in Fig. 1, a schematic diagram of the adsorption regeneration drum in which the adsorption function is performed in the heat recovery adsorption dryer of the present invention is illustrated. The heat recovery adsorption dryer 1 of the present invention is connected to an air compressor 2 for providing hot compressed air, and the heat recovery adsorption dryer 1 has an adsorption tank 11, a regeneration tank 12, a first cooler 13, and a first cooler. 14. The adsorption tank 11 and the regeneration tank 12 have the same structure and have a first adsorbent and a second adsorbent respectively inside, and the first adsorbent in the adsorption tank 11 can perform adsorption and dehumidification of the gas, and then The raw tub 12 is used to perform regeneration of the second adsorbent therein.

Both the adsorption tank 11 and the regeneration drum 12 are interchangeable roles, and the operation of dehumidification and regeneration can be performed in a switched manner, that is, the adsorption tank 11 and the regeneration drum 12 can be interchanged for their functions or setting positions.

In the specific implementation, two dehumidification barrels (ie, adsorption regeneration barrels) containing the adsorbent may be disposed. When one of the roles is the adsorption barrel 11, the other role is the regeneration barrel 12, and the two perform gas respectively. Adsorption dehumidification and regeneration of internal adsorbents. The air compressor 2 is connected to the adsorption tub 11 and the regeneration tub 12 through a pipeline, wherein the first cooler 13 and the second cooler 14 are disposed between the air compressor 2 and the adsorption tub 11 and the regeneration tub 12 In the pipeline, the first cooler 13 can be used to cool the hot compressed air output by the air compressor 2.

As shown in Fig. 1, the heat recovery adsorption dryer 1 is provided with a butterfly valve K1-K13 for controlling the path of the gas circulation in the heat recovery adsorption dryer 1, that is, by closing or opening the butterfly valve K1-K13 to make the gas It can flow to specific components to perform dehumidification, regeneration or cooling procedures. Among them, K1 and K2 can be normal temperature butterfly valves, K3, K4, K7, K8, K9 and K13 can be medium temperature butterfly valves, K5, K6, K10, K11, K12 can be It is a high temperature butterfly valve.

Also shown in Fig. 1 is a heater 15 and a booster blower 16, primarily for the second heating regeneration process of the regeneration drum 12, as will be described in more detail below. In addition, FIG. 1 further includes a first condensing separator 17 and a second condensing separator 18, the first condensing separator 17 being located on the line between the first cooler 13 and the second cooler 14, the second condensing separation The device 18 is located on the line between the second cooler 14 and the adsorption tank 11 and the regeneration drum 12. First condensation The separator 17 and the second condensing separator 18 are mainly used to condense water in the gas and discharge it, which is well known to those skilled in the art and will not be described again.

At the beginning of the operation of dehumidification and regeneration, the hot compressed air output from the air compressor 2 is cooled and then enters the adsorption tank 11, and more specifically, the hot compressed air is cooled by the first cooler 13 and the second cooler 14. And entering the adsorption tank 11 to perform the adsorption dehumidification process. At this time, the hot compressed air of the air compressor 2 can be transferred to the regeneration barrel 12 without the first cooler 13 to perform the first heating regeneration process of the regeneration barrel 12, and then Then, the second heating regeneration process, the cooling process, and the parallel adsorption process of the regeneration drum are performed, and then the adsorption tank 11 and the regeneration tank 12 exchange roles, and are respectively changed to a program for performing regeneration and adsorption. The execution procedures of the heat recovery adsorption dryer 1 of the present invention will be described below with reference to Figs.

Referring to Fig. 1, it is explained that the adsorption tank 11 performs the adsorption function. The butterfly valves K10, K2, K3, K4, K5, K6, K8, K11 and K12 are in a closed state, and the hot compressed air sent from the air compressor 2 will only be cooled by the first cooler 13, passing through the first condensing separator 17 After condensing, the condensed water can be discharged. After the cooled compressed air passes through the butterfly valve K9 and the butterfly valve K13, it is again cooled by the second cooler 14, and condensed by the second condensing separator 18 to discharge the condensed water. The cooled compressed air passes through the butterfly valve K1 to the adsorption tank 11. After the dehumidification adsorption is performed in the adsorption tank 11, the discharged gas is discharged through the outlet through the butterfly valve K7 for use by other external systems.

Please refer to Fig. 2, which is a schematic view showing the adsorption regeneration barrel in which the regeneration function is performed in the heat recovery adsorption dryer of the present invention. As shown, the butterfly valves K9, K11, K12, K2, K3 and K5 are in the closed state, and the air compressor 2 The hot compressed air sent out is closed by the butterfly valve K9, and the pipeline including the first cooler 13 and the first condensing separator 17 cannot be advanced, and the butterfly valves K5, K11 and K12 are closed, and the hot compressed air passes through the butterfly valves K10 and K6. To the regeneration bucket 12.

At this time, the gas discharged when the regeneration tub 12 performs the first heating regeneration process is cooled by the second cooler 14 and then sent to the adsorption tub 11. As shown in the figure, after the regeneration drum 12 performs the regeneration process, the gas with a lower temperature is discharged. Since the butterfly valves K2, K3 and K9 are closed, the gas discharged from the regeneration drum 12 passes through the butterfly valves K4 and K13 to the second cooler. After cooling by the second condensing separator 18, it can be passed through the butterfly valve K1 to the adsorption tank 11, and the gas discharged from the adsorption tank 11 after the dehumidification adsorption is discharged from the outlet through the butterfly valve K7 for use by other external systems.

Please refer to Fig. 3, which is a schematic diagram showing the second heating regeneration process of the adsorption regeneration drum performing the regeneration function in the heat recovery adsorption dryer of the present invention. As shown, the heater 15 is disposed on a line between the outlet of the heat recovery adsorption dryer 1 and the regeneration tub 12, and the heater 15 is for heating the compressed air discharged from the adsorption tank 11 and heating the compressed air. It is sent to the regeneration tub 12 to perform the second heating regeneration process of the regeneration tub 12.

In addition, the heat recovery adsorption dryer 1 further includes a booster blower 16 disposed on a line between the heater 15 and the outlet of the heat recovery adsorption dryer 1 for recovering heat energy from adsorption drying. The compressed air at the outlet of the machine 1 is directed to the heater 15.

As shown, the butterfly valves K10, K2, K3, K5 and K12 are closed In the state, the hot compressed air sent from the air compressor 2 is cooled by the first cooler 13 and condensed by the first condensing separator 17, and the cooled compressed air passes through the butterfly valve K9 and the butterfly valve K13, and then passes through the second cooler 14. The second condensing separator 18 is condensed again, and the re-cooled compressed air passes through the butterfly valve K1 to the adsorption tank 11. After the dehumidification adsorption is performed in the adsorption tank 11, the discharged gas is discharged through the outlet through the butterfly valve K7.

At this time, after the booster blower 16 is started, the dry gas near the outlet of the heat recovery adsorption dryer 1 is extracted, and the gas is sent to the heater 15 for heating, and then sent to the regeneration bucket 12 through the butterfly valve K11 and the butterfly valve K6. In this way, the regeneration drum 12 can perform the second heating regeneration process, and the regeneration drum 12 discharges the intermediate temperature gas through the butterfly valve K4, and will come to the pipeline leading to the adsorption tank 11, that is, to the second cooler 14 through the butterfly valve K13. Subsequently, it is also cooled and condensed and then sent to the adsorption tank 11, and the gas after completion of the dehumidification adsorption is discharged from the outlet through the butterfly valve K7.

As can be seen from the above, the air at the outlet of the heat recovery adsorption dryer 1 can be guided to the heater 15 for heating through the booster blower 16, which can be performed when the adsorbent in the regeneration tank 12 does not reach the predetermined drying standard. The secondary heating regeneration process thereby completes the state in which the regeneration tub 12 performs regeneration.

Please refer to Fig. 4, which is a schematic diagram showing the cooling process of the adsorption regeneration drum for performing the regeneration function in the heat recovery adsorption dryer of the present invention. As shown in the figure, after the second heating regeneration process is completed, cooling of the regeneration tank 12 is performed next, and the hot compressed air of the air compressor 2 is cooled by the first cooler 13 and sent to the regeneration tank 12, thereby performing regeneration. Cooling process of bucket 12 The gas discharged from the regeneration tank 12 during the cooling process is cooled by the second cooler 14 and sent to the adsorption tank 11.

Specifically, the butterfly valves K10, K13, K5, K8, K11, K2, and K3 are in a closed state, and the hot compressed air sent from the air compressor 2 is cooled by the first cooler 13 and condensed by the first condensing separator 17, and cooled. The compressed air then comes to the regeneration tank 12 via the butterfly valve K9 and the butterfly valve K4. The purpose is to cool the regeneration drum 12. After the regeneration barrel 12 performs the regeneration process, the temperature of the discharged gas will be increased, and the gas is then passed through the butterfly valve K9 and the butterfly valve. After K12, it is introduced into the second cooler 14 for cooling and the second condensing separator 18 is condensed, and the cooled air is sent to the adsorption tank 11 through the butterfly valve K1, and the dehumidification adsorption can be performed in the adsorption tank 11, and finally, the discharged gas is exhausted. After passing through the butterfly valve K7, it is discharged from the outlet.

In the cooling process, the entire air volume of the air compressor is cooled and then flows into the regeneration tank 12 to be cooled, and the pressure dew point temperature of the gas discharged from the regeneration tank 12 is lower than -70 ° C, which can be achieved by the cooling mechanism of the present invention. The lower pressure dew point temperature not only improves the quality of the dry compressed air, but also makes the cooling process faster. More importantly, it is not necessary to extract the heat from the exhaust fan 16 to recover the gas at the outlet of the adsorption dryer 1 as in the prior art. The cooling is performed, so that the energy consumption of the booster blower 16 can be reduced.

Please refer to Fig. 5 for a schematic diagram of the parallel adsorption procedure before the switching procedure is performed in the heat recovery adsorption dryer of the present invention. As shown in the figure, before the switching process is performed between the adsorption tank 11 and the regeneration drum 12, the hot compressed air of the air compressor 2 is cooled by the first cooler 13 and the second cooler 14, and simultaneously transferred to the regeneration tank 12 and the adsorption tank. 11, to perform the regeneration barrel 12 and suck Parallel adsorption procedure with barrel 11.

More specifically, in order to avoid excessive surge of the pressure dew point temperature when the two tanks are switched, the parallel adsorption process may be performed before the adsorption barrel 11 and the regeneration tank 12 perform the switching procedure. As shown in the figure, the butterfly valves K10, K11, K12, K3, K4, K5 and K3 are in a closed state, and the hot compressed air sent from the air compressor 2 is cooled by the first cooler 13 and condensed by the first condensing separator 17, after passing through The butterfly valve K9 and the butterfly valve K13 are sent to the second cooler 14, cooled again by the second cooler 14, and condensed by the second condensing separator 18, and sent to the adsorption tank 11 and the regeneration tank 12 through the butterfly valve K1 and the butterfly valve K2, respectively. Through this procedure, the two tanks are first outputted in parallel for a period of time, thereby reducing the excessive surge of the pressure dew point temperature during the switching, and the gas discharged from the adsorption tank 11 and the regeneration tank 12 is sent to the butterfly valve K7 and the butterfly valve K8, respectively. The heat energy is recovered from the outlet of the adsorption dryer 1.

Please refer to Fig. 6 for a schematic diagram showing the execution state of the two adsorption regeneration dryers after the switching of the heat recovery adsorption dryer of the present invention. As shown in the figure, after the roles of the adsorption tank 11 and the regeneration drum 12 in FIG. 5 are interchanged, that is, the right tank is changed to perform the dehumidification adsorption program, the left tank is changed to perform the regeneration process, and the adsorption tank 11 performs the dehumidification adsorption. The procedure, as described in FIG. 1, the hot compressed air sent from the air compressor 2 is cooled by the first cooler 13, the first condensing separator 17 is condensed, the second cooler 14 is cooled again, and the second condensing separator 18 is condensed. After entering the adsorption tank 11, after the dehumidification adsorption is performed in the adsorption tank 11, the discharged gas is discharged from the outlet of the thermal energy recovery adsorption dryer 1 for use by other external systems.

It can be seen from the above that the switch is switched on and off through the butterfly valves K1~K13. The gas travel path is followed by the execution of the regeneration process, the second heating regeneration process, the cooling process, and the parallel adsorption process in accordance with the procedures executed in FIGS. 2 to 5, so that the adsorption tank 11 performs adsorption dehumidification, and the regeneration tank 12 executes the internal adsorbent. Regeneration, so that the two dehumidification tanks can alternately perform adsorption dehumidification and regeneration, thereby completing the function of the dryer.

In summary, the heat recovery waste adsorption dryer of the present invention changes the position of the cooler on the basis of the prior art, so that not only the cooling process is faster, but also the energy consumption of the booster blower can be reduced, and in addition, the heat is transmitted. And the booster blower can lower the pressure dew point temperature, and the pressure dew point temperature of the whole system can reach below -70 °C, thereby improving the quality of dry compressed air.

The above embodiments are intended to illustrate the principles of the present invention and its effects, and are not intended to limit the present invention. Anyone who is familiar with the art may modify the above embodiments without departing from the spirit and scope of the creation. Therefore, the scope of protection of this creation should be as listed in the scope of patent application.

1‧‧‧ Thermal energy recovery adsorption dryer

11‧‧‧ adsorption bucket

12‧‧‧Recycled barrel

13‧‧‧First cooler

14‧‧‧Second cooler

15‧‧‧heater

16‧‧‧Supercharged air blower

17‧‧‧First Condensation Separator

18‧‧‧Second condensate separator

2‧‧‧Air compressor

K1~K13‧‧‧Butter Valve

Claims (10)

A heat energy recovery adsorption dryer is connected to an air compressor that provides hot compressed air. The heat energy recovery adsorption dryer comprises: a first adsorption regeneration barrel, wherein the first adsorbent in the interior performs gas adsorption dehumidification or use Performing regeneration of the first adsorbent; the second adsorption regeneration tank performs adsorption and dehumidification of the gas by the second adsorbent inside thereof or is used to perform regeneration of the second adsorbent, wherein the first adsorption regeneration barrel Performing the operation of dehumidification and regeneration in a switchable manner with the second adsorption regeneration tank, and wherein the air compressor, the first adsorption regeneration tank and the second adsorption regeneration barrel are connected to each other through a pipeline; and the first a cooler and a second cooler disposed on the pipeline between the air compressor and the first adsorption regeneration tank and the second adsorption regeneration tank, wherein the heat compression is started when the operation of the dehumidification and regeneration begins After being cooled by the first cooler and the second cooler, the air enters the first adsorption regeneration bucket to perform adsorption dehumidification of the first adsorption regeneration tank, and the hot compressed air is not subjected to the first cooler and the first Cooler transmitted to the second adsorption regeneration tub, to perform the regeneration of the second adsorption heat tub of a regeneration program. The heat recovery adsorption dryer according to claim 1, wherein the gas discharged by the second adsorption regeneration bucket during the first heating regeneration process is cooled by the second cooler and sent to the The first adsorption regeneration barrel. Thermal energy recovery adsorption drying as described in claim 1 The machine further includes a heater disposed on the line between the outlet of the thermal energy recovery adsorption dryer and the second adsorption regeneration tank for heating compressed air discharged from the first adsorption regeneration tank and heating The compressed air is then sent to the second adsorption regeneration tank to perform a second heating regeneration process of the second adsorption regeneration tank. The heat recovery adsorption dryer according to claim 3, further comprising a booster blower disposed on the pipeline between the heater and the outlet of the heat recovery adsorption dryer for The compressed air at the outlet of the thermal energy recovery adsorption dryer is directed to the heater. The heat recovery adsorption dryer according to claim 3, wherein the gas discharged by the second adsorption regeneration tank during the second heating regeneration process is cooled by the second cooler and sent to the The first adsorption regeneration barrel. The thermal energy recovery adsorption dryer according to claim 3, wherein after the second heating regeneration process is completed, the hot compressed air of the air compressor is cooled by the first cooler and sent to the The second adsorption regeneration tank is configured to perform a cooling process of the second adsorption regeneration tank. The heat recovery adsorption dryer according to claim 6, wherein the gas discharged by the second adsorption regeneration bucket during the cooling process is cooled by the second cooler and sent to the first adsorption regeneration. barrel. The thermal energy recovery adsorption dryer according to claim 6, wherein in the cooling process, the second adsorption regeneration drum is arranged The pressure dew point temperature of the gas is below -70 °C. The thermal energy recovery adsorption dryer according to claim 1, wherein the hot compressed air of the air compressor passes through the first before the switching process is performed between the first adsorption regeneration barrel and the second adsorption regeneration barrel After the cooler and the second cooler are cooled, they are simultaneously transferred to the second adsorption regeneration tank and the first adsorption regeneration tank to perform a parallel adsorption process of the second adsorption regeneration tank and the first adsorption regeneration barrel. The thermal energy recovery adsorption dryer of claim 1, wherein the pipeline between the first cooler and the second cooler further comprises a first condensation separator, and wherein the first condensation separator The second cooler is connected to the pipeline between the first adsorption regeneration tank and the second adsorption regeneration tank, and further comprises a second condensation separator.