Compressed air dechlorination device, dechlorination system and use method of dechlorination system

Abstract

The invention discloses a compressed air dechlorination device, a dechlorination system and a use method of the dechlorination system, and relates to the technical field of air compression energy storage. The compressed air dechlorination device comprises an adsorbent, a retainer and an adsorption tank. The adsorbent comprises a plurality of adsorption layers which are arranged continuously or at intervals in the axis direction of the adsorbent, each adsorption layer comprises an activated carbon bonding layer and an active coke bonding layer, and the adsorption layers at the two ends of the adsorbent are the active coke bonding layers. The two retainers abut against the active coke bonding layers at the two ends of the adsorbent respectively. The air inlet of the adsorption tank is communicated with the air outlet of the salt cavern through a pipeline, and the air outlet of the adsorption tank is communicated with the air inlet of the compressed air power generation system through a pipeline. One retainer is positioned between the air inlet of the adsorption tank and the adsorbent, and the other retainer is positioned between the air outlet of the adsorption tank and the adsorbent. Compared with the prior art, according to the technical scheme, the problem that chlorine in compressed air corrodes a compressed air power generation system can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage, and in particular to a compressed air dechlorination device, a dechlorination system and a method for using the dechlorination system. Background Art

[0002] Air compression energy storage has the advantages of large energy storage capacity, long energy storage cycle, and low specific investment, and is considered to be one of the most promising large-scale energy storage technologies. Salt rock has high sealing and large space, which is suitable for large-scale storage of compressed air. In addition, when the internal air pressure changes, the salt cavern wall will produce a slight deformation to balance the pressure, and this deformation is reversible within a certain range, will not cause damage to the salt cavern structure, and has a certain degree of safety.

[0003] Salt rock contains a lot of sodium chloride. Since sodium chloride is a strong electrolyte, it is easy to dissociate into sodium ions and chloride ions in the presence of water molecules. When compressed air is stored in salt caverns, it will come into contact with these microenvironments containing chloride ions, resulting in the presence of chloride ions in the compressed air. During the release process of these compressed air containing chloride ions, they will corrode the heat exchange tubes of the heat exchanger, the fins of the expander and other parts of the compressed air power generation system, shortening the service life of the equipment. Summary of the invention

[0004] The object of the present invention is to provide a compressed air dechlorination device, a dechlorination system and a method for using the dechlorination system, so as to solve the problem that chlorine in the compressed air corrodes the compressed air power generation system.

[0005] To achieve the above object, the present invention provides the following solutions: The invention discloses a compressed air dechlorination device, comprising: An adsorbent, wherein the adsorbent comprises a plurality of adsorption layers arranged continuously or at intervals along its own axis direction, wherein the adsorption layers comprise an activated carbon bonding layer and an activated coke bonding layer, and the adsorption layers at both ends of the adsorbent are both the activated coke bonding layers; A retainer, wherein the number of the retainers is two, and the two retainers are respectively against the activated coke bonding layers at both ends of the adsorbent; An adsorption tank, wherein the air inlet of the adsorption tank is used to be connected to the air outlet of the salt cavern through a pipeline, and the air outlet of the adsorption tank is used to be connected to the air inlet of a compressed air power generation system through a pipeline; the adsorbent and the retaining frame are both located in the adsorption tank; one retaining frame is located between the air inlet of the adsorption tank and the adsorbent, and the other retaining frame is located between the air outlet of the adsorption tank and the adsorbent.

[0006] Preferably, a reinforcing hoop is fixed to the outer side of the adsorption tank.

[0007] Preferably, the retaining frame includes a conical cover and a connecting frame, and the connecting frame connects the conical cover and the adsorption tank respectively; the tip of the conical cover faces the side away from the adsorbent, and the activated coke bonding layer in contact with the conical cover has a conical surface adapted to the inner side surface of the conical cover.

[0008] The present invention also discloses a compressed air dechlorination system, comprising the above-mentioned compressed air dechlorination device, and also comprising a washing tower, a venting chimney, an alkali liquid tank and a collecting pool; the gas outlet of the adsorption tank is connected to the gas inlet of the washing tower through a pipeline, so as to release the chlorine-containing gas adsorbed by the adsorbent to the washing tower; the liquid outlet of the alkali liquid tank is connected to the liquid inlet of the washing tower through a pipeline, so as to supply alkali liquid to the washing tower; the washing tower is used to spray alkali liquid on the chlorine-containing gas; the gas outlet of the washing tower is connected to the venting chimney through a pipeline, so as to empty the gas treated by spraying; the collecting pool is used to collect the alkali liquid after the spraying treatment.

[0009] Preferably, the compressed air dechlorination system also includes a filter for re-filtering the dechlorinated compressed air; the air inlet of the filter is connected to the air outlet of the adsorption tank through a pipeline, and the air outlet of the filter is used to connect to the air inlet of the compressed air power generation system through a pipeline.

[0010] Preferably, there are multiple filters, which are arranged in parallel so that the filters can continuously filter the dechlorinated compressed air through alternating maintenance.

[0011] Preferably, the number of the compressed air dechlorination devices is plural, so that the compressed air dechlorination devices can continuously dechlorinate the compressed air by alternately releasing chlorine-containing gas to the scrubbing tower.

[0012] The present invention also discloses a method for using the compressed air dechlorination system, which comprises the following steps: Monitoring the pressure difference at both ends of the adsorbent to obtain a measured pressure difference, and comparing the measured pressure difference with a preset absorption stop pressure difference and a release stop pressure difference; When the measured pressure difference is higher than the stop absorption pressure difference, the connection between the air inlet of the compressed air dechlorination device and the air outlet of the salt cavern is interrupted, and the connection between the air outlet of the compressed air dechlorination device and the air inlet of the compressed air power generation system is interrupted; the connection between the air outlet of the compressed air dechlorination device and the air inlet of the washing tower is opened, and the connection between the liquid outlet of the alkali liquid tank and the liquid inlet of the washing tower is opened; When the measured pressure difference is lower than the stop release pressure difference, the connection between the air inlet of the compressed air dechlorination device and the air outlet of the salt cavern is opened, and the connection between the air outlet of the compressed air dechlorination device and the air inlet of the compressed air power generation system is opened; the connection between the air outlet of the compressed air dechlorination device and the air inlet of the washing tower is interrupted, and the connection between the liquid outlet of the alkali liquid tank and the liquid inlet of the washing tower is interrupted.

[0013] Preferably, the method for using the compressed air dechlorination system further comprises the following steps: Monitoring the chlorine content at the gas outlet of the adsorption tank to obtain a first chlorine content, and comparing the first chlorine content with a preset first control content; When the first chlorine content is higher than the first controlled content, the valve opening on the pipeline between the air inlet of the compressed air dechlorination device and the air outlet of the salt cavern is reduced.

[0014] Preferably, the method for using the compressed air dechlorination system further comprises the following steps: After the connection between the air outlet of the compressed air dechlorination device and the air inlet of the washing tower is opened, the opening of the valve on the pipeline between the air outlet of the compressed air dechlorination device and the air inlet of the washing tower is gradually increased.

[0015] Compared with the related art, the present invention has achieved the following technical effects: Before entering the compressed air power generation system, the compressed air discharged from the salt cavern passes through the adsorbent in the adsorption tank, and the adsorbent adsorbs the chlorine in the compressed air, thereby reducing the chlorine content in the compressed air, reducing corrosion to the compressed air power generation system, and extending the service life of the compressed air power generation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Schematic diagram of a compressed air dechlorination system according to an embodiment of the present invention.

[0018] In the figure: 100-compressed air dechlorination system; 110-compressed air dechlorination device; 111-adsorbent; 112-retaining frame; 113-adsorption tank; 114-reinforced hoop; 1111-activated carbon bonding layer; 1112-activated coke bonding layer; 1121-conical cover; 1122-connecting frame; 120-washing tower; 130-venting chimney; 140-alkali liquid tank; 150-collecting tank; 160-filter; 170-sensor group; 180-valve group; 1710-differential pressure sensor; 1711-chlorine content sensor after adsorption; 1712-chlorine content sensor after spraying; 17 13-pressure sensor after adsorption; 1714-salt cave outlet flow sensor; 1715-chlorine content sensor before adsorption; 1716-temperature sensor before adsorption; 1717-temperature sensor after adsorption; 1718-alkali solution flow sensor; 1719-pH sensor; 1720-pressure sensor before adsorption; 181-second shut-off valve; 182-third shut-off valve; 183-fourth shut-off valve; 184-flow regulating valve before adsorption; 185-alkali solution flow regulating valve; 186-flow regulating valve during regeneration; 187-fifth shut-off valve; 188-first shut-off valve; 200-salt cave. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The object of the present invention is to provide a compressed air dechlorination device, a dechlorination system and a method for using the dechlorination system, so as to solve the problem that chlorine in the compressed air corrodes the compressed air power generation system.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In this application, "dechlorination" refers to the removal of chloride ions.

[0022] Reference Figure 1 This embodiment provides a compressed air dechlorination device 110, including an adsorbent 111, a retaining frame 112 and an adsorption tank 113.

[0023] The adsorbent 111 includes a plurality of adsorption layers arranged continuously or at intervals along its own axial direction, and the adsorption layers include an activated carbon bonding layer 1111 and an activated coke bonding layer 1112 . The adsorption layers at both ends of the adsorbent 111 are both activated coke bonding layers 1112 .

[0024] There are two retaining frames 112 , and the two retaining frames 112 are respectively against the active coke bonding layers 1112 at both ends of the adsorbent 111 .

[0025] The air inlet of the adsorption tank 113 is used to connect to the air outlet of the salt cavern 200 through a pipeline, and the air outlet of the adsorption tank 113 is used to connect to the air inlet of the compressed air power generation system through a pipeline. The adsorbent 111 and the retaining frame 112 are both located in the adsorption tank 113. One retaining frame 112 is located between the air inlet of the adsorption tank 113 and the adsorbent 111, and the other retaining frame 112 is located between the air outlet of the adsorption tank 113 and the adsorbent 111.

[0026] The working principle of the compressed air dechlorination device 110 in this embodiment is as follows: Before entering the compressed air power generation system, the compressed air discharged from the salt cavern 200 first passes through the adsorbent 111 in the adsorption tank 113, and the adsorbent 111 adsorbs chlorine in the compressed air, thereby reducing the chlorine content in the compressed air, reducing corrosion to the compressed air power generation system, and extending the service life of the compressed air power generation system.

[0027] Activated carbon has a high specific surface area and good adsorption. After testing, it was found that under an environment of about 1MPa, activated carbon has a good selective adsorption of chloride ions in the gas in the salt cavern 200, which can reach more than 95%. However, due to the developed pore structure of activated carbon, its hardness is relatively low. When it is squeezed or rubbed by external force, activated carbon is easy to crush. Especially some powdered activated carbon, which has fine particles and lower hardness.

[0028] Therefore, activated carbon is generally used for gas adsorption treatment in an environment of about 1MPa. However, the pressure of compressed air discharged from the salt cavern 200 is generally 10MPa~15MPa. Activated carbon is easily dispersed under the impact of compressed air and is not easy to maintain integrity.

[0029] In this embodiment, activated carbon particles are bonded by adhesive to form activated carbon bonding layer 1111 to improve its impact resistance. At the same time, activated carbon bonding layer 1112 is provided at both ends of adsorbent 111 to further improve its impact resistance.

[0030] Activated coke is generally made from coal through high-temperature dry distillation and other processes. Its structure is denser than activated carbon, so its adsorption effect is weaker than activated carbon. When activated coke is used as a gas adsorbent, it is usually used for dry desulfurization and denitrification of industrial flue gas.

[0031] In this embodiment, the adsorption layers at both ends of the adsorbent 111 are both set as activated coke bonding layers 1112. On the one hand, the adsorption of the activated coke bonding layer 1112 is used to adsorb chlorine in the compressed air. On the other hand, the mechanical strength of activated coke is superior to that of activated carbon, and it is not easily dispersed under the impact of airflow. By combining the activated carbon bonding layer 1111 with the activated coke bonding layer 1112, the adsorbent 111 of this embodiment has both the strong adsorption provided by activated carbon and the strong hardness provided by activated coke, so as to solve the problem of dechlorination of compressed air.

[0032] As a possible example, in this embodiment, each adsorption layer is wrapped in a mesh cage, and the mesh cage is fixed on the inner wall of the adsorption tank 113 to achieve the positioning of the adsorption layer. A certain gap is preferably left between adjacent mesh cages, such as a gap of 10 mm to 60 mm, to block the transmission of force between adjacent mesh cages.

[0033] As a possible example, in this embodiment, the activated carbon is hard-coal anthracite. The activated coke combines hard coal-based coke with petroleum coke to increase its specific surface area and micropore number, so that the iodine value of the activated coke is increased to between 1200 and 1500, and the specific surface area is 2600m 2 / g or above.

[0034] The retainer 112 is a support that can pass airflow and is used to limit the end position of the adsorbent 111. The inner wall of the adsorption tank 113 is used to contact the side of the adsorbent 111 to maintain the side profile of the adsorbent 111. By arranging the retainers 112 at both ends of the adsorbent 111, and combining the generally cylindrical annular inner wall provided by the adsorption tank 113, the adsorbent 111 can better maintain its own shape under the impact of airflow.

[0035] Compared with the activated carbon bonding layer 1111 , the activated coke bonding layer 1112 has better structural stability and is therefore more suitable to be disposed adjacent to the retaining frame 112 to bear the pressure of the retaining frame 112 .

[0036] In addition to limiting the adsorbent 111, the retaining frame 112 near the air inlet of the adsorption tank 113 can also disperse the airflow, so that the adjacent activated coke bonding layer 1112 can bear the impact of the airflow more evenly.

[0037] As a possible example, in this embodiment, a reinforcing hoop 114 is fixed to the outside of the adsorption tank 113. Preferably, a plurality of reinforcing hoop 114 are provided, and are at least distributed outside the section of the adsorption tank 113 corresponding to the adsorbent 111.

[0038] As a possible example, in this embodiment, the retaining frame 112 includes a conical cover 1121 and a connecting frame 1122, and the connecting frame 1122 respectively connects the conical cover 1121 and the adsorption tank 113. The tip of the conical cover 1121 faces the side away from the adsorbent 111, and the activated coke bonding layer 1112 attached to the conical cover 1121 has a conical surface adapted to the inner side of the conical cover 1121.

[0039] The conical structure is relatively stable and can better maintain the shape of the adsorbent 111. In addition, the tip of the conical cover 1121 close to the air inlet of the adsorption tank 113 can also play a role in breaking the wind, so that the compressed air is evenly dispersed.

[0040] Exemplarily, the connecting frame 1122 includes a center ring and an oblique support rod, the center ring is sleeved outside the conical cover 1121, and the two ends of the oblique support rod are respectively connected to the center ring and the adsorption tank 113. The oblique support rod is inclined relative to the axis of the adsorption tank 113, and is used to apply pressure to the center ring to press it toward the conical cover 1121. The number of the oblique support rods is more than three, and they are evenly distributed in the circumferential direction with the axis of the adsorption tank 113 as the center, so that the center ring is evenly stressed.

[0041] Reference Figure 1 The present embodiment also provides a compressed air dechlorination system 100, including the above-mentioned compressed air dechlorination device 110, and also including a washing tower 120, an emptying chimney 130, an alkali liquid tank 140 and a collection tank 150. The gas outlet of the adsorption tank 113 is connected to the gas inlet of the washing tower 120 through a pipeline, which is used to release the chlorine-containing gas adsorbed by the adsorbent 111 to the washing tower 120. The liquid outlet of the alkali liquid tank 140 is connected to the liquid inlet of the washing tower 120 through a pipeline, which is used to supply alkali liquid to the washing tower 120. The washing tower 120 is used to spray alkali liquid on the chlorine-containing gas. The gas outlet of the washing tower 120 is connected to the emptying chimney 130 through a pipeline, which is used to empty the gas treated by spraying. The collection tank 150 is used to collect the alkali liquid after the spraying treatment.

[0042] The working principle of the compressed air dechlorination system 100 of this embodiment is as follows: As the adsorption amount of the adsorbent 111 increases, its adsorption capacity gradually decreases. Therefore, when the adsorption amount of the adsorbent 111 reaches a certain standard, the adsorption process of the adsorbent 111 is stopped, and the release process of the adsorbed gas by the adsorbent 111 begins, which is called the regeneration process of the adsorbent 111. The chlorine-containing gas released by the adsorbent 111 and the alkali solution provided by the alkali solution tank enter the washing tower 120 together. The alkali solution contacts the chlorine-containing gas in the form of spraying in the washing tower 120 to absorb the chloride ions in the air. The air after the chloride ions are removed is discharged from the vent chimney 130, and the solution containing chloride ions is discharged from the washing tower 120 to the collection tank 150. After the regeneration process of the adsorbent 111 is completed, the adsorbent 111 can re-enter the adsorption process and continue to adsorb the compressed air discharged from the salt cave 200.

[0043] As a possible example, in this embodiment, the compressed air dechlorination system 100 further includes a filter 160 for re-filtering the dechlorinated compressed air. The air inlet of the filter 160 is connected to the air outlet of the adsorption tank 113 through a pipeline, and the air outlet of the filter 160 is used to connect to the air inlet of the compressed air power generation system through a pipeline.

[0044] The filter 160 is used to absorb fine particles in the compressed air, which may be particles lost by the adsorbent 111 under the impact of the compressed air. By filtering these particles, the impact of the particles on the expander blades is reduced, thereby extending the service life of the expander.

[0045] As a possible example, in this embodiment, there are multiple filters 160, and the multiple filters 160 are arranged in parallel, so that the filter 160 can continuously filter the dechlorinated compressed air through alternating maintenance. When the pressure difference at both ends of a filter 160 reaches a certain standard, the air inlet and the air outlet of the filter 160 are closed, and the filter 160 enters the maintenance state, and the filtering work is continued through other filters 160, so as to maintain the continuous filtering process.

[0046] As a possible example, in this embodiment, the number of compressed air dechlorination devices 110 is multiple, so that the compressed air dechlorination device 110 continuously dechlorinates the compressed air by alternately releasing chlorine-containing gas to the washing tower 120. When the pressure difference at both ends of a compressed air dechlorination device 110 reaches a certain standard, the air inlet of the compressed air dechlorination device 110 is closed, the passage between the air outlet of the compressed air dechlorination device 110 and the filter 160 is closed, and the passage between the air outlet of the compressed air dechlorination device 110 and the air inlet of the washing tower 120 is opened, and the compressed air dechlorination device 110 enters the regeneration process of the adsorbent 111, and the adsorption work is continued through other compressed air dechlorination devices 110, so as to keep the adsorption process continuous.

[0047] This embodiment also provides a method for using a compressed air dechlorination system, using the compressed air dechlorination system 100, including the following steps: The pressure difference at both ends of the adsorbent 111 is monitored to obtain a measured pressure difference, and the measured pressure difference is compared with a preset absorption stop pressure difference and a release stop pressure difference.

[0048] When the measured pressure difference is higher than the stop absorption pressure difference, the connection between the air inlet of the compressed air dechlorination device 110 and the air outlet of the salt cavern 200 is interrupted, and the connection between the air outlet of the compressed air dechlorination device 110 and the air inlet of the compressed air power generation system is interrupted. The connection between the air outlet of the compressed air dechlorination device 110 and the air inlet of the washing tower 120 is opened, and the connection between the liquid outlet of the alkali liquid tank 140 and the liquid inlet of the washing tower 120 is opened.

[0049] When the measured pressure difference is lower than the stop release pressure difference, the air inlet of the compressed air dechlorination device 110 is connected to the air outlet of the salt cavern 200, and the air outlet of the compressed air dechlorination device 110 is connected to the air inlet of the compressed air power generation system. The air outlet of the compressed air dechlorination device 110 is connected to the air inlet of the washing tower 120, and the liquid outlet of the alkali liquid tank 140 is connected to the liquid inlet of the washing tower 120.

[0050] As the adsorption amount of the adsorbent 111 increases, the density of the adsorbent 111 gradually increases, the measured pressure difference gradually increases, and the adsorption capacity of the adsorbent 111 gradually decreases. Therefore, the measured pressure difference can characterize the state of the adsorbent 111. When the measured pressure difference is higher than the stop absorption pressure difference, the adsorbent 111 enters the regeneration process, and when the measured pressure difference is lower than the stop release pressure difference, the adsorbent 111 enters the adsorption process. By adopting the above method, the measured pressure difference is roughly maintained between the stop absorption pressure difference and the stop release pressure difference.

[0051] As a possible example, in this embodiment, the method for using the compressed air dechlorination system further includes the following steps: The chlorine content at the gas outlet of the adsorption tank 113 is monitored to obtain a first chlorine content, and the first chlorine content is compared with a preset first control content.

[0052] When the first chlorine content is higher than the first control content, the valve opening on the pipeline between the air inlet of the compressed air dechlorination device 110 and the air outlet of the salt cavern 200 is reduced.

[0053] It should be noted that as the adsorption amount of the adsorbent 111 increases, its adsorption capacity gradually decreases. Therefore, during the adsorption process of the adsorbent 111, the flow rate of the compressed air needs to be gradually reduced so that the chlorine content of the gas discharged from the outlet of the compressed air dechlorination device 110 is maintained below the first control content, thereby reducing corrosion to the compressed air power generation system.

[0054] As a possible example, in this embodiment, the method for using the compressed air dechlorination system further includes the following steps: After the air outlet of the compressed air dechlorination device 110 is connected to the air inlet of the washing tower 120, the opening of the valve on the pipeline between the air outlet of the compressed air dechlorination device 110 and the air inlet of the washing tower 120 is gradually increased.

[0055] By gradually increasing the opening of the valve on the pipeline between the air outlet of the compressed air dechlorination device 110 and the air inlet of the washing tower 120, the air pressure in the adsorption tank 113 of the compressed air dechlorination device 110 is slowly reduced. This method of slowly reducing the air pressure maintains the air pressure environment of the adsorbent 111 at a higher level, which is beneficial to increasing the speed of the adsorbent 111 releasing the adsorbed gas, and can reduce the flow rate of the airflow, thereby reducing the impact of the airflow on the adsorbent 111 and prolonging the contact time between the airflow and the alkali solution.

[0056] As a possible example, in this embodiment, the method for using the compressed air dechlorination system further includes the following steps: The chlorine content at the gas outlet of the washing tower 120 is monitored to obtain a second chlorine content, and the second chlorine content is compared with a preset second control content.

[0057] When the second chlorine content is higher than the second controlled content, the alkali solution flow rate between the liquid outlet of the alkali solution tank 140 and the liquid inlet of the washing tower 120 is increased.

[0058] In this way, more chlorine in the air is absorbed by the lye.

[0059] As a possible example, in this embodiment, the type of alkali solution is sodium hydroxide. After the sodium hydroxide solution contacts the chlorine-containing gas, the chloride ions exist in the solution in the form of sodium chloride.

[0060] As a possible example, in this embodiment, the number of the compressed air dechlorination devices 110 is two, and the number of the filters 160 is two.

[0061] As a possible example, in this embodiment, the compressed air dechlorination system is not used manually but automatically to improve dechlorination efficiency and reduce costs.

[0062] That is, the compressed air dechlorination system 100 also includes a control system, which includes a control unit, a sensor group 170 for transmitting sensing signals to the control unit, and a valve group 180 for executing control instructions of the control unit, wherein the sensor group 170 and the valve group 180 are both electrically connected to the control unit.

[0063] In this embodiment, the sensor group 170 includes a differential pressure sensor 1710 installed on the adsorption tank 113. The differential pressure sensor 1710 is used to monitor the pressure difference between the two ends of the adsorbent 111 to obtain the above-mentioned measured pressure difference.

[0064] The valve group 180 includes a first shutoff valve 188, a second shutoff valve 181, a third shutoff valve 182 and a fourth shutoff valve 183. The first shutoff valve 188 is located at the air inlet of the compressed air dechlorination device 110, and the second shutoff valve 181 and the third shutoff valve 182 are arranged in series at the air outlet of the compressed air dechlorination device 110. A pipeline leading to the air inlet of the washing tower 120 is led out between the second shutoff valve 181 and the third shutoff valve 182 to transport chlorine-containing gas to the washing tower 120, and the fourth shutoff valve 183 is arranged on the pipeline.

[0065] When the control unit determines that the compressed air dechlorination device 110 is in the adsorption process, it controls the first shutoff valve 188 to open, the second shutoff valve 181 to open, the third shutoff valve 182 to open, and the fourth shutoff valve 183 to close.

[0066] When the control unit determines that the compressed air dechlorination device 110 is in the regeneration process, it controls the first shutoff valve 188 to close, the second shutoff valve 181 to open, the third shutoff valve 182 to close, and the fourth shutoff valve 183 to open.

[0067] In this embodiment, the sensor group 170 also includes a post-adsorption chlorine content sensor 1711 installed at the air outlet of the adsorption tank 113, which is used to monitor the chlorine content at the air outlet of the adsorption tank 113 to obtain the above-mentioned first chlorine content, so that the control unit can compare the first chlorine content with the preset first control content.

[0068] The valve group 180 further includes a pre-adsorption flow control valve 184 installed at the air inlet of the adsorption tank 113, which is used to adjust the flow of compressed air flowing through the compressed air dechlorination device 110. The control unit adjusts the opening of the pre-adsorption flow control valve 184 according to the data monitored by the post-adsorption chlorine content sensor 1711.

[0069] In this embodiment, the sensor group 170 also includes a post-spray chlorine content sensor 1712 installed at the air outlet of the washing tower 120, which is used to monitor the chlorine content at the air outlet of the washing tower 120 to obtain the above-mentioned second chlorine content, so that the control unit can compare the second chlorine content with the preset second control content.

[0070] The valve group 180 further includes an alkali solution flow regulating valve 185 installed at the liquid outlet of the alkali solution tank 140, which is used to adjust the flow of the alkali solution flowing to the washing tower 120. The control unit adjusts the opening of the alkali solution flow regulating valve 185 according to the data monitored by the post-spray chlorine content sensor 1712.

[0071] In this embodiment, the sensor group 170 further includes a post-adsorption pressure sensor 1713 installed at the gas outlet of the adsorption tank 113 , which is used to monitor the pressure of the gas outlet of the adsorption tank 113 .

[0072] The valve group 180 further includes a regeneration process flow regulating valve 186, which is disposed on a pipeline between the second shutoff valve 181 and the third shutoff valve 182 leading to the air inlet of the washing tower 120. The control unit adjusts the opening of the regeneration process flow regulating valve 186 according to the data monitored by the post-adsorption pressure sensor 1713.

[0073] In this embodiment, the sensor group 170 also includes a salt cave outlet flow sensor 1714 , a pre-adsorption chlorine content sensor 1715 , a pre-adsorption temperature sensor 1716 , a post-adsorption temperature sensor 1717 , an alkali solution flow sensor 1718 , and a pH sensor 1719 .

[0074] The salt cavern outlet flow sensor 1714 is disposed at the gas outlet of the salt cavern 200 and is simultaneously connected in series with the two compressed air dechlorination devices 110 to monitor the flow rate of the compressed air flowing out of the gas outlet of the salt cavern 200 .

[0075] The pre-adsorption chlorine content sensor 1715 is disposed at the air inlet of the adsorption tank 113 , and is used to monitor the chlorine content of the compressed air at the air inlet of the adsorption tank 113 .

[0076] The pre-adsorption temperature sensor 1716 is disposed on one end of the adsorption tank 113 close to the air inlet, and is used to monitor the temperature of the compressed air before adsorption.

[0077] The post-adsorption temperature sensor 1717 is disposed at the air outlet of the adsorption tank 113 to monitor the temperature of the compressed air after adsorption.

[0078] The alkali solution flow sensor 1718 is disposed at the outlet of the alkali solution tank to monitor the flow of the alkali solution flowing to the washing tower 120 .

[0079] The pH sensor 1719 is disposed in the collection tank 150 to monitor the pH value of the solution in the collection tank 150 .

[0080] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A compressed air dechlorination device (110), characterized in that: include: An adsorbent (111), the adsorbent (111) comprising a plurality of adsorption layers arranged continuously or at intervals along the axial direction of the adsorbent, the adsorption layers comprising an activated carbon bonding layer (1111) and an activated coke bonding layer (1112), and the adsorption layers at both ends of the adsorbent (111) are both activated coke bonding layers (1112); A retaining frame (112), wherein the number of the retaining frames (112) is two, and the two retaining frames (112) are respectively against the active coke bonding layers (1112) at two ends of the adsorbent (111); An adsorption tank (113), wherein an air inlet of the adsorption tank (113) is used to communicate with an air outlet of a salt cavern (200) through a pipeline, and an air outlet of the adsorption tank (113) is used to communicate with an air inlet of a compressed air power generation system through a pipeline; the adsorbent (111) and the retaining frame (112) are both located in the adsorption tank (113); one retaining frame (112) is located between the air inlet of the adsorption tank (113) and the adsorbent (111), and the other retaining frame (112) is located between the air outlet of the adsorption tank (113) and the adsorbent (111).

2. The compressed air dechlorination device (110) according to claim 1, characterized in that: A reinforcing hoop (114) is fixed to the outer side of the adsorption tank (113).

3. The compressed air dechlorination device (110) according to claim 1, characterized in that: The retaining frame (112) comprises a conical cover (1121) and a connecting frame (1122), wherein the connecting frame (1122) respectively connects the conical cover (1121) and the adsorption tank (113); the tip of the conical cover (1121) faces the side away from the adsorbent (111), and the activated coke bonding layer (1112) in contact with the conical cover (1121) has a conical surface adapted to the inner side surface of the conical cover (1121).

4. A compressed air dechlorination system (100), characterized in that: The invention comprises a compressed air dechlorination device (110) according to any one of claims 1 to 3, and further comprises a washing tower (120), a venting chimney (130), an alkali liquid tank (140) and a collecting pool (150); the gas outlet of the adsorption tank (113) is connected to the gas inlet of the washing tower (120) through a pipeline, so as to release the chlorine-containing gas adsorbed by the adsorbent (111) to the washing tower (120); the liquid outlet of the alkali liquid tank (140) is connected to the liquid inlet of the washing tower (120) through a pipeline, so as to supply alkali liquid to the washing tower (120); the washing tower (120) is used to spray alkali liquid on the chlorine-containing gas; the gas outlet of the washing tower (120) is connected to the venting chimney (130) through a pipeline, so as to discharge the gas after the spraying treatment; and the collecting pool (150) is used to collect the alkali liquid after the spraying treatment.

5. The compressed air dechlorination system (100) according to claim 4, characterized in that: It also includes a filter (160) for re-filtering the compressed air that has undergone dechlorination treatment; the air inlet of the filter (160) is connected to the air outlet of the adsorption tank (113) through a pipeline, and the air outlet of the filter (160) is used to connect to the air inlet of the compressed air power generation system through the pipeline.

6. The compressed air dechlorination system (100) according to claim 5, characterized in that: The number of the filters (160) is plural, and the plural filters (160) are arranged in parallel, so that the filters (160) can continuously filter the dechlorinated compressed air through alternating maintenance.

7. The compressed air dechlorination system (100) according to claim 4, characterized in that: The number of the compressed air dechlorination devices (110) is plural, so that the compressed air dechlorination devices (110) continuously perform a process of dechlorinating the compressed air by alternately releasing chlorine-containing gas to the scrubbing tower (120).

8. A method for using a compressed air dechlorination system, characterized in that: The compressed air dechlorination system (100) according to any one of claims 4 to 7 comprises the following steps: Monitoring the pressure difference at both ends of the adsorbent (111) to obtain a measured pressure difference, and comparing the measured pressure difference with a preset absorption stop pressure difference and a release stop pressure difference; When the measured pressure difference is higher than the absorption stopping pressure difference, the connection between the air inlet of the compressed air dechlorination device (110) and the air outlet of the salt cavern (200) is interrupted, and the connection between the air outlet of the compressed air dechlorination device (110) and the air inlet of the compressed air power generation system is interrupted; the connection between the air outlet of the compressed air dechlorination device (110) and the air inlet of the washing tower (120) is opened, and the connection between the liquid outlet of the alkali liquid tank (140) and the liquid inlet of the washing tower (120) is opened; When the measured pressure difference is lower than the stop release pressure difference, the connection between the air inlet of the compressed air dechlorination device (110) and the air outlet of the salt cavern (200) is opened, and the connection between the air outlet of the compressed air dechlorination device (110) and the air inlet of the compressed air power generation system is opened; the connection between the air outlet of the compressed air dechlorination device (110) and the air inlet of the washing tower (120) is interrupted, and the connection between the liquid outlet of the alkali liquid tank (140) and the liquid inlet of the washing tower (120) is interrupted.

9. The method for using the compressed air dechlorination system according to claim 8, characterized in that: The following steps are also included: monitoring the chlorine content at the gas outlet of the adsorption tank (113) to obtain a first chlorine content, and comparing the first chlorine content with a preset first control content; When the first chlorine content is higher than the first controlled content, the valve opening on the pipeline between the air inlet of the compressed air dechlorination device (110) and the air outlet of the salt cavern (200) is reduced.

10. The method for using the compressed air dechlorination system according to claim 8, characterized in that: The following steps are also included: After the connection between the air outlet of the compressed air dechlorination device (110) and the air inlet of the washing tower (120) is opened, the opening degree of the valve on the pipeline between the air outlet of the compressed air dechlorination device (110) and the air inlet of the washing tower (120) is gradually increased.

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