CN220478481U - Organic waste gas continuous treatment system based on activated carbon adsorption and desorption - Google Patents
Organic waste gas continuous treatment system based on activated carbon adsorption and desorption Download PDFInfo
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- CN220478481U CN220478481U CN202420051913.5U CN202420051913U CN220478481U CN 220478481 U CN220478481 U CN 220478481U CN 202420051913 U CN202420051913 U CN 202420051913U CN 220478481 U CN220478481 U CN 220478481U
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000007789 gas Substances 0.000 title claims abstract description 42
- 238000003795 desorption Methods 0.000 title claims abstract description 31
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 29
- 239000010815 organic waste Substances 0.000 title claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 claims abstract description 135
- 238000007599 discharging Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000006096 absorbing agent Substances 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 abstract description 21
- 239000000203 mixture Substances 0.000 abstract description 6
- 239000007791 liquid phase Substances 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 description 10
- 238000007084 catalytic combustion reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the technical field of waste gas treatment devices, and particularly relates to an organic waste gas continuous treatment system based on activated carbon adsorption and desorption, which comprises a main absorption tower and a standby absorption tower which are arranged in parallel, wherein activated carbon layers are respectively filled in the main absorption tower and the standby absorption tower, and the main absorption tower is respectively connected with an absorption tower air inlet pipeline, an absorption tower air outlet pipeline, a steam feeding pipeline and a steam discharging pipeline; the standby absorption tower is respectively connected with an absorption tower air inlet pipeline, an absorption tower air outlet pipeline, a steam feeding pipeline and a steam discharging pipeline; the steam discharging pipeline is sequentially connected with the heat exchanger and the condensate collecting tank. Compared with the existing activated carbon adsorption and desorption device, the device has the advantages of better heat transfer, higher desorption efficiency, small treatment difficulty of the subsequent liquid phase mixture, low cost and higher treatment rate.
Description
Technical Field
The utility model belongs to the technical field of waste gas treatment devices, and particularly relates to an organic waste gas continuous treatment system based on activated carbon adsorption and desorption.
Background
In recent years, with the continuous improvement of environmental emission standards, the waste gas treatment of enterprises faces great challenges, and the selection of an economic and effective waste gas treatment mode is important.
At present, most enterprises adopt catalytic combustion equipment to treat waste gas, and although the equipment can effectively treat various waste gas, the initial investment is relatively high, and for low-concentration waste gas, fuel is required to be added during operation, so that the cost is further increased. The physical adsorption principle is to utilize intermolecular van der Waals force to complete adsorption, when the concentration of the waste gas is low, the contact probability of the adsorbent and organic molecules in the waste gas is higher, and the adsorption effect is better, so that the waste gas with low concentration is more suitable for being treated in an adsorption mode.
Chinese patent CN103574625a discloses a catalytic combustion furnace, the furnace body comprises a catalytic body frame, a catalytic heat accumulator, a combustion chamber heat insulation layer, a heat exchanger fixing frame, a heat exchanger fixing support, a heat exchanger heat insulation layer and a sealing end cover; the catalytic heat accumulator is fixed on the catalytic heat accumulator frame, forms a rotary body with two closed ends together with the combustion chamber, and is arranged in the heat exchanger in a dynamic sealing fit manner; the furnace body rotates through a transmission system. The patent adopts a catalytic combustion process, and has complex equipment and huge occupied area; the catalyst is expensive, and the investment cost is high; the cost effectiveness of treating low concentration exhaust gas is relatively low.
Chinese patent CN102350169a discloses a method for adsorbing and desorbing a multi-bed activated carbon adsorber, the adsorber adopts a multi-bed structure, each bed works in parallel during adsorption, and the adsorbed gas is adsorbed through each bed simultaneously; and the activated carbon bed layer is heated under the protection of flame-retardant gas for desorption, each bed layer works in series during desorption, the desorption gas sequentially passes through each bed layer, and the desorbed organic waste is sent to subsequent process treatment. In the desorption process of the patent, flame retardant gas is additionally introduced and active carbon bed heating equipment is arranged, so that the cost is increased; the gas-phase organic waste desorbed by heating has higher treatment difficulty and higher cost compared with the liquid-phase organic waste.
Disclosure of Invention
The utility model aims to provide an organic waste gas continuous treatment system based on activated carbon adsorption and desorption, which solves the problems of large initial investment and high cost for treating low-concentration waste gas in the existing catalytic combustion process and the problem of complex treatment of the existing activated carbon adsorption and desorption device.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the organic waste gas continuous treatment system based on the adsorption and desorption of the activated carbon comprises a main absorption tower and a standby absorption tower which are arranged in parallel, wherein the interiors of the main absorption tower and the standby absorption tower are respectively filled with an activated carbon layer, and the main absorption tower is respectively connected with an absorption tower air inlet pipeline, an absorption tower air outlet pipeline, a steam feeding pipeline and a steam discharging pipeline; the standby absorption tower is respectively connected with an absorption tower air inlet pipeline, an absorption tower air outlet pipeline, a steam feeding pipeline and a steam discharging pipeline; the steam discharging pipeline is sequentially connected with the heat exchanger and the condensate collecting tank.
Wherein:
the lower parts of the main absorption tower and the standby absorption tower are respectively connected with an air inlet pipeline of the absorption tower.
An induced draft fan is arranged on the air inlet pipeline of the absorption tower, an outlet of the induced draft fan is connected with the surface air cooler, and an inlet of the induced draft fan is connected with the organic waste gas pipeline. Because the waste gas generated by the reaction is often high in temperature, and the desorption phenomenon can occur at the high temperature of the activated carbon, the surface cooler has the effects of reducing the temperature of the waste gas and ensuring the adsorption efficiency of the activated carbon.
The tops of the main absorption tower and the standby absorption tower are respectively connected with an air outlet pipeline of the absorption tower.
An air outlet pipe of the absorption tower connected with the main absorption tower is provided with a first air valve, the first air valve is provided with a first air detection device, and an air inlet pipe of the absorption tower positioned in the main absorption tower is provided with a third air valve; and a second pneumatic valve is arranged on an air outlet pipe of the absorption tower connected with the standby absorption tower, a second gas detection device is arranged on the second pneumatic valve, and a fourth pneumatic valve is arranged on an air inlet pipe of the absorption tower positioned in the standby absorption tower. When the first gas detection device detects that the main absorption tower fails, the system automatically cuts out the failed main absorption tower and cuts into the non-failed standby absorption tower, and similarly, when the second gas detection device detects that the standby absorption tower fails, the system automatically cuts into the non-failed main absorption tower, so that the uninterrupted operation of waste gas treatment is ensured.
The upper parts of the main absorption tower and the standby absorption tower are respectively connected with a steam feeding pipeline, a first stop valve is arranged on the steam feeding pipeline connected with the main absorption tower, and a second stop valve is arranged on the steam feeding pipeline connected with the standby absorption tower. When the first gas detection device detects that the main absorption tower fails, the system automatically opens the first stop valve, the active carbon layer is treated by steam, and the active carbon layer is heated to desorb organic matters adsorbed by the active carbon layer, so that the adsorption capacity of the active carbon layer is recovered. Similarly, when the standby absorption tower fails, the system automatically opens the second stop valve, and the same treatment is carried out on the active carbon layer by using steam.
The bottoms of the main absorption tower and the standby absorption tower are respectively connected with a steam discharging pipeline.
A ball valve I is arranged on a steam discharging pipeline connected with the main absorption tower; and a ball valve II is arranged on a steam discharging pipeline connected with the standby absorption tower.
The shell side inlet of the heat exchanger is connected with a steam discharging pipeline, and the shell side outlet of the heat exchanger is connected with the top of the condensate collecting tank; the tube side inlet of the heat exchanger is connected with the circulating water inlet pipe, and the tube side outlet of the heat exchanger is connected with the circulating water return pipe. Ensures that the water vapor mixture is converted into liquid state, and is convenient for subsequent reprocessing.
The bottom of the condensate collecting tank is provided with a condensate outlet pipeline.
The beneficial effects of the utility model are as follows:
the utility model adopts the mode of activated carbon adsorption and steam desorption treatment to realize uninterrupted operation of the system and multiplexing of the device, thereby solving the problem of high cost of treating low-concentration waste gas; in the utility model, during high-temperature desorption, the adsorbed organic waste is transferred into water, so that compared with the existing activated carbon adsorption and desorption device, the heat transfer is better, the desorption efficiency is higher, the treatment difficulty of the subsequent liquid phase mixture is low, the cost is low, and the treatment rate is higher; the utility model does not need to install complex catalytic combustion equipment, has small occupied area and small initial investment, and solves the problems of large initial investment and high cost for treating low-concentration waste gas in the existing catalytic combustion process.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure: 1. an induced draft fan; 2. a surface cooler; 3. an absorption tower air inlet pipeline; 4. a steam feed line; 5. a main absorption tower; 5-1, a first stop valve; 5-2, a first gas detection device; 5-3, a first pneumatic valve; 5-4, a pneumatic valve III; 5-5, ball valve I; 6. an absorber gas outlet pipeline; 7. a standby absorption tower; 7-1, a stop valve II; 7-2, a second gas detection device; 7-3, a pneumatic valve II; 7-4, a pneumatic valve IV; 7-5, ball valve II; 8. a heat exchanger; 9. a circulating water return pipe; 10. a condensate outlet line; 11. a condensate collection tank; 12. a circulating water inlet pipe; 13. a steam discharging pipeline; 14. an organic waste gas pipeline.
Detailed Description
The present utility model is specifically described and illustrated below with reference to examples.
Example 1
As shown in fig. 1, the organic waste gas continuous treatment system based on activated carbon adsorption and desorption comprises a main absorption tower 5 and a standby absorption tower 7 which are arranged in parallel, wherein activated carbon layers are respectively filled in the main absorption tower 5 and the standby absorption tower 7, and the main absorption tower 5 is respectively connected with an absorption tower air inlet pipeline 3, an absorption tower air outlet pipeline 6, a steam feeding pipeline 4 and a steam discharging pipeline 13; the standby absorption tower 7 is respectively connected with an absorption tower air inlet pipeline 3, an absorption tower air outlet pipeline 6, a steam feeding pipeline 4 and a steam discharging pipeline 13; the steam discharging pipeline 13 is sequentially connected with the heat exchanger 8 and the condensate collecting tank 11.
The lower parts of the main absorption tower 5 and the standby absorption tower 7 are respectively connected with the absorption tower air inlet pipeline 3.
An induced draft fan 1 is arranged on an air inlet pipeline 3 of the absorption tower, an outlet of the induced draft fan 1 is connected with a surface cooler 2, and an inlet of the induced draft fan 1 is connected with an organic waste gas pipeline 14. Because the waste gas generated by the reaction is often high in temperature, and the desorption phenomenon can occur at the high temperature of the activated carbon, the surface cooler 2 has the function of reducing the temperature of the waste gas and ensuring the absorption efficiency of the activated carbon.
The tops of the main absorption tower 5 and the standby absorption tower 7 are respectively connected with an absorption tower air outlet pipeline 6.
The absorption tower air outlet pipeline 6 connected with the main absorption tower 5 is provided with a first pneumatic valve 5-3, the first pneumatic valve 5-3 is provided with a first gas detection device 5-2, and the absorption tower air inlet pipeline 3 positioned in the main absorption tower 5 is provided with a third pneumatic valve 5-4; the air outlet pipeline 6 of the absorption tower connected with the standby absorption tower 7 is provided with a second air valve 7-3, the second air valve 7-3 is provided with a second air detection device 7-2, and the air inlet pipeline 3 of the absorption tower positioned in the standby absorption tower 7 is provided with a fourth air valve 7-4. When the first gas detection device 5-2 detects that the main absorption tower 5 fails, the system automatically cuts out the failed main absorption tower 5 and cuts in the non-failed standby absorption tower 7, and similarly, when the second gas detection device 5-2 detects that the standby absorption tower 7 fails, the system automatically cuts in the non-failed main absorption tower 5, so that the uninterrupted operation of waste gas treatment is ensured.
The upper parts of the main absorption tower 5 and the standby absorption tower 7 are respectively connected with a steam feeding pipeline 4, a first stop valve 5-1 is arranged on the steam feeding pipeline 4 connected with the main absorption tower 5, and a second stop valve 7-1 is arranged on the steam feeding pipeline 4 connected with the standby absorption tower 7. When the first gas detection device 5-2 detects that the main absorption tower 5 fails, the system automatically opens the first stop valve 5-1, and the active carbon layer is treated by steam, so that the active carbon layer is heated to desorb the adsorbed organic matters, and the adsorption capacity of the active carbon layer is recovered. Similarly, when the standby absorption tower 7 fails, the system automatically opens the second stop valve 7-1, and the same treatment is carried out on the active carbon layer by using steam.
The bottoms of the main absorption tower 5 and the standby absorption tower 7 are respectively connected with a steam discharging pipeline 13.
A ball valve I5-5 is arranged on a steam discharging pipeline 13 connected with the main absorption tower 5; the steam discharging pipeline 13 connected with the standby absorption tower 7 is provided with a ball valve II 7-5.
The shell side inlet of the heat exchanger 8 is connected with a steam discharging pipeline 13, and the shell side outlet of the heat exchanger 8 is connected with the top of a condensate collecting tank 11; the tube side inlet of the heat exchanger 8 is connected with a circulating water inlet tube 12, and the tube side outlet of the heat exchanger 8 is connected with a circulating water return tube 9. Ensures that the water vapor mixture is converted into liquid state, and is convenient for subsequent reprocessing.
The bottom of the condensate collecting tank 11 is provided with a condensate outlet pipeline 10.
The system treats organic waste gas, and specifically comprises the following steps:
the main absorption tower 5 and the standby absorption tower 7 are used for one by one, the main absorption tower 5 is generally used for treating organic waste gas, when the gas detection device I5-2 detects that the concentration of the waste gas at the position of the absorption tower gas outlet pipeline 6 connected with the main absorption tower 5 is higher than a discharge standard value, the main absorption tower 5 is indicated to be invalid, and the system automatically cuts out the invalid main absorption tower 5 and cuts into the non-invalid standby absorption tower 7, so that the uninterrupted operation of waste gas treatment is ensured. And simultaneously, opening a first stop valve 5-1 to introduce steam, setting the heat preservation time to 20-30 min, closing the first stop valve 5-1 and opening a first ball valve 5-5 after heat preservation is finished, and discharging the treated water vapor mixture into the heat exchanger 8 through a steam discharging pipeline 13. The circulating water inlet pipe 12 and the circulating water return pipe 9 are kept open normally, so that the water-vapor mixture is fully condensed into liquid, then enters the condensate collecting tank 11, the ball valve I5-5 is closed, the regeneration of the main absorption tower 5 is completed at the moment, and then condensate is discharged along the condensate outlet pipeline 10. When the standby absorption tower 7 fails, the main absorption tower 5 is cut in, and the standby absorption tower 7 is filled with steam for heat preservation to carry out desorption treatment of organic matters.
The technical characteristics of the pneumatic valve, the stop valve, the ball valve and the like related to the utility model are the prior art known to the person skilled in the art.
Although the present utility model has been described in detail by way of example with reference to the accompanying drawings, the present utility model is not limited thereto. Various equivalent modifications and substitutions for embodiments of the present utility model may be made by those skilled in the art without departing from the spirit and substance of the present utility model, and these modifications and substitutions are intended to be within the scope of the present utility model.
Claims (10)
1. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption comprises a main absorption tower (5) and a standby absorption tower (7) which are arranged in parallel, wherein activated carbon layers are respectively filled in the main absorption tower (5) and the standby absorption tower (7), and the system is characterized in that the main absorption tower (5) is respectively connected with an absorption tower air inlet pipeline (3), an absorption tower air outlet pipeline (6), a steam feeding pipeline (4) and a steam discharging pipeline (13); the standby absorption tower (7) is respectively connected with an absorption tower air inlet pipeline (3), an absorption tower air outlet pipeline (6), a steam feeding pipeline (4) and a steam discharging pipeline (13); the steam discharging pipeline (13) is sequentially connected with the heat exchanger (8) and the condensate collecting tank (11).
2. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption according to claim 1, wherein the lower parts of the main absorption tower (5) and the standby absorption tower (7) are respectively connected with an absorption tower air inlet pipeline (3).
3. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption according to claim 2, wherein an induced draft fan (1) is arranged on an absorption tower air inlet pipeline (3), an outlet of the induced draft fan (1) is connected with a surface cooler (2), and an inlet of the induced draft fan (1) is connected with an organic waste gas pipeline (14).
4. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption according to claim 1, wherein the tops of the main absorption tower (5) and the standby absorption tower (7) are respectively connected with an absorption tower air outlet pipeline (6).
5. The activated carbon adsorption and desorption-based organic waste gas continuous treatment system according to any one of claims 1 to 4, wherein a first pneumatic valve (5-3) is installed on an absorber outlet pipeline (6) connected with a main absorber (5), a first gas detection device (5-2) is installed on the first pneumatic valve (5-3), and a third pneumatic valve (5-4) is installed on an absorber inlet pipeline (3) positioned inside the main absorber (5); the second pneumatic valve (7-3) is arranged on an absorption tower air outlet pipeline (6) connected with the standby absorption tower (7), the second pneumatic valve (7-3) is provided with the second pneumatic detection device (7-2), and the fourth pneumatic valve (7-4) is arranged on an absorption tower air inlet pipeline (3) positioned in the standby absorption tower (7).
6. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption according to claim 1, wherein the upper parts of the main absorption tower (5) and the standby absorption tower (7) are respectively connected with a steam feeding pipeline (4), a first stop valve (5-1) is arranged on the steam feeding pipeline (4) connected with the main absorption tower (5), and a second stop valve (7-1) is arranged on the steam feeding pipeline (4) connected with the standby absorption tower (7).
7. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption according to claim 1, wherein the bottoms of the main absorption tower (5) and the standby absorption tower (7) are respectively connected with a steam discharging pipeline (13).
8. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption as claimed in claim 7, wherein a ball valve I (5-5) is arranged on a steam discharging pipeline (13) connected with the main absorption tower (5); a second ball valve (7-5) is arranged on a steam discharging pipeline (13) connected with the standby absorption tower (7).
9. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption according to claim 1, wherein a shell side inlet of the heat exchanger (8) is connected with a steam discharging pipeline (13), and a shell side outlet of the heat exchanger (8) is connected with the top of a condensate collecting tank (11); the tube side inlet of the heat exchanger (8) is connected with a circulating water inlet pipe (12), and the tube side outlet of the heat exchanger (8) is connected with a circulating water return pipe (9).
10. The organic waste gas continuous treatment system based on activated carbon adsorption and desorption as claimed in claim 9, wherein a condensate outlet pipeline (10) is arranged at the bottom of the condensate collecting tank (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420051913.5U CN220478481U (en) | 2024-01-10 | 2024-01-10 | Organic waste gas continuous treatment system based on activated carbon adsorption and desorption |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202420051913.5U CN220478481U (en) | 2024-01-10 | 2024-01-10 | Organic waste gas continuous treatment system based on activated carbon adsorption and desorption |
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| Publication Number | Publication Date |
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| CN220478481U true CN220478481U (en) | 2024-02-13 |
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| CN202420051913.5U Active CN220478481U (en) | 2024-01-10 | 2024-01-10 | Organic waste gas continuous treatment system based on activated carbon adsorption and desorption |
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