CN111744322A - Activated carbon adsorption and desorption synchronous waste gas treatment method - Google Patents
Activated carbon adsorption and desorption synchronous waste gas treatment method Download PDFInfo
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- CN111744322A CN111744322A CN202010521211.5A CN202010521211A CN111744322A CN 111744322 A CN111744322 A CN 111744322A CN 202010521211 A CN202010521211 A CN 202010521211A CN 111744322 A CN111744322 A CN 111744322A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
Abstract
The invention relates to an active carbon adsorption and desorption synchronous waste gas treatment method, belonging to the field of waste gas treatment methods, in particular to an active carbon adsorption and desorption synchronous waste gas treatment method which can realize the adsorption and desorption of active carbon on the same device by utilizing an integrated device, drives a storage cylinder to rotate to different stations by utilizing rotation, respectively carries out the adsorption or desorption of the active carbon, simultaneously keeps the storage cylinder in a sealed state all the time in the rotating process of a rotary cylinder and the storage cylinder, is not easy to cause the leakage of residual waste gas or inert gas in the storage cylinder, prolongs the moving path of the waste gas and the inert gas by arranging a separation grid plate in the storage cylinder, increases the adsorption effect of active carbon particles filled in the storage cylinder, improves the automation degree, avoids the middle transportation process, greatly reduces the labor cost in the recycling process of the active carbon, greatly improves the economic benefit of the activated carbon and plays a positive role in promoting the recycling of the activated carbon.
Description
Technical Field
The invention relates to the field of waste gas treatment methods, in particular to an active carbon adsorption and desorption synchronous waste gas treatment method.
Background
The active carbon adsorption type can be divided into three types, namely physical adsorption, chemical adsorption and ion exchange adsorption according to different adsorption forces on the outer surface of a solid, wherein the adsorption of an adsorbent and an adsorbate (solute) through molecular force is called physical adsorption, while the adsorption of the adsorbent and the adsorbate (solute) through chemical bond effects is called physical adsorption, chemical reaction is started, so that the adsorbent and the adsorbate (solute) are firmly connected, and the last example of exchange adsorption refers to that ions of a substance are gathered on a charged point on the outer surface of the adsorbent due to electrostatic attraction and are accompanied by the exchange of equivalent ions in the adsorption process, namely, each ion of the adsorbate (solute) is adsorbed.
The desorption of the activated carbon means that the activated carbon which is fully adsorbed is activated again after being treated under certain conditions, wherein a heating regeneration method is the most applied and industrially most mature activated carbon regeneration method. The activated carbon after treating organic wastewater is generally divided into three stages of drying, high-temperature carbonization and activation according to the change of organic matters when heated to different temperatures in the regeneration process. In the drying stage, the volatile constituents on the activated carbon are mainly removed. In the high-temperature carbonization stage, a part of organic matters adsorbed on the activated carbon is boiled and vaporized for desorption, a part of organic matters are subjected to decomposition reaction to generate micromolecular hydrocarbon for desorption, and residual components are left in pores of the activated carbon to form 'fixed carbon'. In this stage, the temperature will reach 800-900 ℃, and in order to avoid oxidation of the activated carbon, the process is generally performed under vacuum or inert atmosphere. In the next activation stage, CO2, CO, H2 or steam and other gases are introduced into the reaction kettle to clean the micropores of the activated carbon and restore the adsorption performance.
Adsorption and desorption are two opposite processes in a certain sense, adsorption is to adsorb impurities by using active carbon, desorption is to remove the adsorbed impurities by doing work on the active carbon, and the adsorption and desorption need two distinct working environments, so that the adsorption and desorption are usually carried out separately in different containers at different times, intermediate processes such as disassembly, installation and transportation are usually required in the process, the process is complex, a large amount of labor cost is required to be consumed, the economic benefit of the active carbon is influenced, and the recycling of the active carbon is hindered.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a synchronous waste gas treatment method by activated carbon adsorption and desorption.
In order to achieve the purpose, the invention adopts the technical scheme that: the rotary drum is used for driving the storage drum to rotate to different stations, and activated carbon adsorption or desorption work is respectively carried out.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
be in encapsulated situation all the time with rotary drum and storage cylinder pivoted in-process storage cylinder, be difficult for causing remaining waste gas or inert gas in the storage cylinder to leak, and through set up the removal route of separating grid tray extension waste gas and inert gas in the storage cylinder, increase the active carbon particle adsorption effect of filling in the storage cylinder, degree of automation is high, avoid middle handling, reduce the cost of labor of active carbon recycle process by a wide margin, promote the economic benefits of active carbon by a wide margin, play positive promotion effect to the recycle of active carbon.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
fig. 1 is an exploded view of the main structure of the adsorption and desorption device of the present invention;
fig. 2 is a schematic view of the main structure of the adsorption and desorption apparatus of the present invention;
fig. 3 is a front sectional view of the adsorption and desorption apparatus of the present invention in standby;
fig. 4 is a front sectional view of the adsorption and desorption apparatus of the present invention in operation;
FIG. 5 is a schematic view of the structure at A in FIG. 4;
FIG. 6 is a schematic view of the structure at B in FIG. 4;
FIG. 7 is a schematic view of a partial structure of a partition grid according to the present invention;
wherein: 1. a rotating drum; 2. a rotating shaft; 3. a processing bin; 4. a limiting ring; 5. a storage drum; 6. a screen frame; 7. a leakage-proof net; 8. separating the grid plate; 801. a grid plate main body; 802. capillary micropores; 9. a capillary fiber; 10. an air inlet pipe; 11. an air inlet; 12. an installation table; 13. a connecting rod; 14. a sealing plate; 15. an annular screen; 16. a compression spring; 17. an exhaust gas pipe; 18. a sealing cover; 19. a telescopic rod; 20. a tension spring.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
An active carbon adsorption and desorption synchronous waste gas treatment method mainly comprises the following steps:
s1, performing activated carbon adsorption, namely performing adsorption treatment on the waste gas by using an activated carbon adsorption device to adsorb target toxic substances in the waste gas;
s2, rotating, wherein after the activated carbon works for a certain time in the activated carbon adsorption at S1, when most of the activated carbon is in a saturated state and approaches to a saturated state, the adsorption capacity of the activated carbon is reduced, the activated carbon needs to be replaced, at the moment, the saturated or approaching saturated activated carbon is rotated into a desorption device and is flushed to fill a new activated carbon adsorption device for the waste gas treatment device, particularly, in the actual production process, the certain time can be preset by experienced technicians before the device works, and the activated carbon is not easy to saturate within a certain time and does not easily influence the normal adsorption work;
s3, desorption, namely desorbing the S2 adsorption device filled with saturated or nearly saturated activated carbon in the rotation by using the desorption device to restore the activity of the activated carbon, and when the activated carbon adsorption device in the waste gas treatment device is saturated again, refilling the adsorption device of the desorbed activated carbon into the waste gas treatment device for adsorption work to form circulation, so that the adsorption and desorption of the activated carbon can be realized on the same device by using the integrated device, the automation degree is high, the middle carrying process is avoided, the labor cost in the activated carbon recycling process is greatly reduced, the economic benefit of the activated carbon is greatly improved, and the active promotion effect on recycling of the activated carbon is achieved;
referring to fig. 1-6, an activated carbon adsorption and desorption synchronous waste gas treatment device includes a rotating cylinder 1, a rotating shaft 2 inserted in the rotating cylinder 1, and pivot 2 and 1 fixed connection of rotary drum, it has a plurality of processing storehouses 3 to cut on the rotary drum 1, processing storehouse 3 and 2 axial of rotary shaft, the drill way department fixedly connected with and self assorted spacing ring 4 of processing storehouse 3, the one end of 3 fixedly connected with spacing ring 4 in processing storehouse is the gas outlet, the one end that spacing ring 4 was kept away from in processing storehouse 3 is the air inlet, 3 interpolation in the processing storehouse have with self assorted storage cylinder 5, equal fixedly connected with in both ends and self assorted net frame 6 about storage cylinder 5, fixedly connected with and self assorted leak protection net 7 in the net frame 6, the built-in active carbon granule that is filled with of storage cylinder 5, the air inlet and the gas outlet department of storage cylinder 5 that are located the active carbon adsorption equipment are equipped with respectively with self assorted intake pipe 10 and exhaust pipe 17.
Particularly, in the present scheme, the rotating drum 1, the rotating shaft 2, the air inlet pipe 10 and the exhaust gas pipe 17 need to be configured with corresponding frames for supporting themselves, the rotating shaft 2 is fixedly connected with a power output end of a low-speed motor and the like, the rotating shaft 2 is driven to rotate by the equipment of the low-speed motor and the like, the frames of the air inlet pipe 10 and the exhaust gas pipe 17 need to play a supporting role, and devices such as an electromagnetic slide rail and the like are also needed to realize the sliding of the air inlet pipe 10 and the exhaust gas pipe 17, and the air inlet pipe 10 and the exhaust gas pipe 17 can be connected with or disconnected from the storage barrel 5 under the control of a control terminal, because the frames, the motor, the electromagnetic slide rail and the processing terminal are all known technologies of technical personnel in the field, the technical characteristics and rules in the field can be used for reasonably designing the specific structure of the device of the present scheme, so it is not described in detail, fixed connection is realized through magnetic force between spacing ring 4 and the leak protection net 7 between processing bin 3 and the storage cylinder 5, and storage cylinder 5 is close to the one end fixedly connected with fixture block of spacing ring 4, and spacing ring 4 is close to storage cylinder 5's one end chisel have with fixture block assorted draw-in groove, make storage cylinder 5 be difficult for taking place the upset in processing bin 3 through fixture block and draw-in groove.
In the process of S1 and activated carbon adsorption, an air inlet pipe 10 and an exhaust gas pipe 17 are respectively inserted into a storage barrel 5, the air inlet pipe 10 is used for filling waste gas into the storage barrel 5, the waste gas is exhausted from the exhaust gas pipe 17 after being adsorbed by activated carbon particles in the storage barrel 5, after the activated carbon particles filled in the storage barrel 5 are saturated, a rotary drum 1 is used for driving a rotary shaft 2 to rotate, the storage barrel 5 filled with the saturated activated carbon particles rotates to the lower side, the air inlet pipe 10 and the exhaust gas pipe 17 positioned at the lower side are inserted into the storage barrel 5 and injected with high-temperature inert gas such as nitrogen for desorption operation, wherein the air inlet pipe 10 and the exhaust gas pipe 17 have the same structure in adsorption and desorption operation, only the gas leading to the storage barrel 5 is different, one end of the air inlet pipe 10 far away from the rotary drum 1 is fixedly connected with a high-pressure air pump for filling the waste gas or the high-temperature inert gas into the storage barrel 5, and one end, for being used for handling waste gas and desorption with gas, reduce the pollution of adsorption and desorption work to the environment, it is unusual, six processing bin 3 have been dug on the rotary drum 1, and equal fixedly connected with storage cylinder 5 in six processing bin 3, can divide into two sets with storage cylinder 5 it, every group includes adjacent three storage cylinder 5, be equipped with respectively six storage cylinder 5 with self assorted intake pipe 10 and exhaust pipe 17, three storage cylinder 5 of every group adsorbs or desorption work simultaneously, realize the rotation, and when desorption pressure was too big, can divide into three groups with six storage cylinder 5, every group includes two adjacent storage cylinders 5, storage cylinder 5 of a group adsorbs the work, two other groups carry out desorption work, and when adsorption pressure is too big, then just in opposite with the aforesaid.
A plurality of light weight cavities are formed in the rotary drum 1 in a chiseling mode, the light weight cavities are located between two adjacent treatment bins 3, the weight of the rotary drum 1 is reduced, power consumption required by the rotation of the rotary drum 1 driven by the rotary shaft 2 is reduced, light heat-insulating materials are filled in the light weight cavities, the influence of high-temperature gas in the desorption process on adsorption work is reduced, and the adsorption of activated carbon is not easy to cause instability.
Referring to fig. 5, an air inlet of the storage cylinder 5 is fixedly connected with a mounting table 12 which is first matched with the storage cylinder, an air inlet pipe 10 is inserted into the mounting table 12, a sealing plate 14 which is matched with the mounting table 12 is slidably connected in the storage cylinder 5, a pair of compression springs 16 are fixedly connected between the sealing plate 14 and the net frame 6, an annular screen 15 is embedded in the sealing plate 14, an air inlet hole 11 is cut in the air inlet pipe 10, when adsorption and desorption work is performed, corresponding waste gas or inert gas enters the storage cylinder 5 through the air inlet hole 11 and the annular screen 15, after the air inlet pipe 10 is pulled out of the storage cylinder 5, the compression spring 16 in a compression state pushes the sealing plate 14 back to the left end to seal the storage cylinder 5, so as to prevent the waste gas or inert gas in the storage cylinder 5 from leaking, a connecting rod 13 is fixedly connected between the mounting table 12 and the net frame 6, and the connecting rod 13 penetrates through the sealing plate, existence of connecting rod 13 can prevent that closing plate 14 from turning to one side, be difficult for influencing the sealed effect of closing plate 14, can make compression spring 16 be difficult for taking place the non-work under the exogenic action simultaneously and to deformation, be difficult for causing compression spring 16 to damage, be connected with wear-resisting ring between connecting rod 13 and the closing plate 14, and wear-resisting ring and closing plate 14 fixed connection, can reduce the wearing and tearing between connecting rod 13 and the closing plate 14 by a wide margin, make the connection between connecting rod 13 and the closing plate 14 be difficult for appearing rocking, be difficult for causing closing plate 14 to turn to one side.
Referring to fig. 6, a sealing cover 18 matched with the storage cylinder 5 is inserted at an air outlet of the storage cylinder 5, the sealing cover 18 matched with the leakage-proof net 7 is fixedly connected between the sealing cover 18 and the leakage-proof net 7, a plurality of groups of telescopic rods 19 and extension springs 20 are fixedly connected between the leakage-proof net 7 and the sealing cover 18, the telescopic rods 19 are inserted in the extension springs 20, when waste gas or inert gas is continuously introduced into the storage cylinder 5, the telescopic rods 19 are pushed to the right side by high pressure in the storage cylinder 5, at the moment, the waste gas or inert gas can enter the waste gas pipe 17 from a gap between the limiting ring 4 and the sealing cover 18, and when the introduction of the waste gas or inert gas in the storage cylinder 5 is stopped, the extension springs 20 in a stretching state can pull the sealing cover 18 back into the storage cylinder 5 to seal the storage cylinder 5, so as to prevent the waste.
Referring to fig. 6-7, the inner wall of the storage cylinder 5 is fixedly connected with a plurality of separation grid plates 8, the separation grid plates 8 are distributed in a staggered manner, the separation grid plates 8 can prolong the path length of the exhaust gas or inert gas moving in the separation grid plates 8, so as to increase the adsorption or desorption effect, each separation grid plate 8 comprises a grid plate main body 801, a plurality of capillary micropores 802 are drilled in the grid plate main body 801, the capillary micropores 802 are communicated with each other in a penetrating manner, a small amount of exhaust gas or inert gas can move through the capillary micropores 802, so as to enable the flow direction of the small amount of gas to be irregular, increase the effective utilization rate of activated carbon particles filled in the storage cylinder 5, a plurality of capillary fibers 9 are fixedly connected to the outer wall of the separation grid plates 8, one ends of the capillary fibers 9 close to the separation grid plates 8 penetrate through the separation grid plates 8, the capillary fibers 9 can increase the strength of the separation grid plates 8, meanwhile, the capillary fibers 9 can increase the friction force between the activated carbon particles and the inner wall of the storage barrel 5, so that the storage barrel 5 is not easy to rotate and self-grind with the rotary drum 1 in the process of rotating together with the rotary drum, the activated carbon particles are not easy to crack, and the activated carbon particles are not easy to scatter from the leakage-proof net 7.
Can realize utilizing integrated device to carry out the absorption and the desorption work of active carbon on same device, be in encapsulated situation all the time with rotary drum 1 and 5 pivoted in-process storage cylinder 5 simultaneously, be difficult for causing remaining waste gas or inert gas in the storage cylinder 5 to leak, and through set up the removal route of separating grid tray 8 extension waste gas and inert gas in storage cylinder 5, increase the active carbon granule adsorption effect of filling in storage cylinder 5, degree of automation is high, avoid middle handling, reduce the cost of labor of active carbon recycle process by a wide margin, promote the economic benefits of active carbon by a wide margin, recycle to active carbon plays positive promotion effect.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (10)
1. An active carbon adsorption and desorption synchronous waste gas treatment method is characterized in that: the method mainly comprises the following steps:
s1, performing activated carbon adsorption, namely performing adsorption treatment on the waste gas by using an activated carbon adsorption device to adsorb target toxic substances in the waste gas;
s2, rotating, namely after the activated carbon works for a certain time in the activated carbon adsorption at S1, when most of the activated carbon is in a saturated state and approaches to the saturated state, the adsorption capacity of the activated carbon is reduced, the activated carbon needs to be replaced, and at the moment, the saturated or approaching saturated activated carbon is rotated into a desorption device and is washed to fill a new activated carbon adsorption device for the waste gas treatment device;
s3, desorbing the adsorption device which is filled with saturated or nearly saturated activated carbon in the rotation at S2 by using a desorption device to restore the activity of the activated carbon, and refilling the adsorption device of the desorbed activated carbon into the waste gas treatment device to perform adsorption work when the activated carbon adsorption device in the waste gas treatment device is saturated again;
referring to fig. 1-6, an activated carbon adsorption and desorption synchronous waste gas treatment device comprises a rotary drum (1), a rotary shaft (2) is inserted in the rotary drum (1), the rotary shaft (2) is fixedly connected with the rotary drum (1), a plurality of treatment bins (3) are drilled on the rotary drum (1), the treatment bins (3) and the rotary shaft (2) are in axial direction, a limiting ring (4) matched with the rotary shaft is fixedly connected at an orifice of the treatment bin (3), an air outlet is arranged at one end of the treatment bin (3) fixedly connected with the limiting ring (4), an air inlet is arranged at one end of the treatment bin (3) far away from the limiting ring (4), a storage barrel (5) matched with the rotary shaft is inserted in the treatment bin (3), mesh frames (6) matched with the rotary shaft are fixedly connected at the left end and the right end of the storage barrel (5), and a leakage-proof mesh (7) matched with the mesh frames are fixedly connected in the mesh frames (6), activated carbon particles are filled in the storage barrel (5), and an air inlet pipe (10) and an exhaust gas pipe (17) which are matched with the storage barrel (5) are respectively arranged at the air inlet and the air outlet of the storage barrel (5) which are positioned in the activated carbon adsorption device.
2. The activated carbon adsorption and desorption synchronous type exhaust gas treatment device according to claim 1, characterized in that: a plurality of light-weight cavities are drilled in the rotary drum (1), and the light-weight cavities are located between two adjacent treatment bins (3).
3. The activated carbon adsorption and desorption synchronous type exhaust gas treatment device according to claim 2, characterized in that: the light-weight cavity is filled with light-weight heat-insulating materials.
4. The activated carbon adsorption and desorption synchronous type exhaust gas treatment device according to claim 1, characterized in that: the air inlet of storage cylinder (5) goes out mount table (12) that fixedly connected with and self match earlier, intake pipe (10) are pegged graft in mount table (12), sliding connection has and mount table (12) assorted closing plate (14) in storage cylinder (5), a pair of compression spring (16) of fixedly connected with between closing plate (14) and net frame (6), inlay on closing plate (14) and install ring screen (15), it has inlet port (11) to cut on intake pipe (10).
5. The synchronous activated carbon adsorption and desorption type exhaust gas treatment device according to claim 4, wherein: a connecting rod (13) is fixedly connected between the mounting table (12) and the net frame (6), and the connecting rod (13) penetrates through the sealing plate (14) and penetrates through the compression spring (16).
6. The synchronous activated carbon adsorption and desorption type exhaust gas treatment device according to claim 5, wherein: and a wear-resistant ring is connected between the connecting rod (13) and the sealing plate (14), and the wear-resistant ring is fixedly connected with the sealing plate (14).
7. The activated carbon adsorption and desorption synchronous type exhaust gas treatment device according to claim 1, characterized in that: the air outlet of the storage barrel (5) is plugged with a sealing cover (18) matched with the storage barrel, the sealing cover (18) matched with the anti-leakage net (7) is fixedly connected between the sealing cover (18) and the anti-leakage net (7), a plurality of groups of telescopic rods (19) and extension springs (20) are fixedly connected between the anti-leakage net (7) and the sealing cover (18), and the telescopic rods (19) are plugged in the extension springs (20).
8. The activated carbon adsorption and desorption synchronous type exhaust gas treatment device according to claim 1, characterized in that: the inner wall of the storage barrel (5) is fixedly connected with a plurality of separation grid plates (8), and the separation grid plates (8) are distributed in a staggered mode.
9. The activated carbon adsorption and desorption synchronous type exhaust gas treatment device according to claim 1, characterized in that: the separation grid plate (8) comprises a grid plate main body (801), a plurality of capillary micropores (802) are formed in the grid plate main body (801) in a chiseled mode, and the capillary micropores (802) are communicated with each other in a penetrating mode.
10. The activated carbon adsorption and desorption synchronous type exhaust gas treatment device according to claim 1, characterized in that: the outer wall of the separation grid plate (8) is fixedly connected with a plurality of capillary fibers (9), and one end, close to the separation grid plate (8), of each capillary fiber (9) penetrates through the separation grid plate (8).
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| CN113018992A (en) * | 2021-01-29 | 2021-06-25 | 贾童童 | Membrane material layer stacking and dropping type ceramic filter tube |
| CN113750681A (en) * | 2021-09-13 | 2021-12-07 | 周文英 | Polycrystalline silicon tail gas treatment device and treatment method thereof |
| CN114699879A (en) * | 2022-03-28 | 2022-07-05 | 昆山工统环保科技有限公司 | Activated carbon adsorption device for catalytic combustion gas adsorption |
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| CN117208991A (en) * | 2023-11-07 | 2023-12-12 | 天津医科大学第二医院 | Active carbon heat disinfection device for hemodialysis water |
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| CN113750681A (en) * | 2021-09-13 | 2021-12-07 | 周文英 | Polycrystalline silicon tail gas treatment device and treatment method thereof |
| CN114699879A (en) * | 2022-03-28 | 2022-07-05 | 昆山工统环保科技有限公司 | Activated carbon adsorption device for catalytic combustion gas adsorption |
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Application publication date: 20201009 |