CN215996692U - Activated carbon recovery unit in powder activated carbon regenerator tail gas - Google Patents
Activated carbon recovery unit in powder activated carbon regenerator tail gas Download PDFInfo
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- CN215996692U CN215996692U CN202121197059.6U CN202121197059U CN215996692U CN 215996692 U CN215996692 U CN 215996692U CN 202121197059 U CN202121197059 U CN 202121197059U CN 215996692 U CN215996692 U CN 215996692U
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Abstract
The utility model provides an active carbon recovery unit in powder active carbon regenerator tail gas, belongs to energy-concerving and environment-protective technical field, and it includes: the tail gas collecting device, the solid-gas separating device and the automatic material receiving device are sequentially connected. The tail gas collecting device is mainly used for collecting tail gas discharged by each tail gas discharge port, and is convenient for subsequent uniform treatment; the solid-gas separation device is mainly used for separating the powdered activated carbon from the tail gas, and cooling the powdered activated carbon while discharging the high-temperature tail gas so that the powdered activated carbon has subsequent material receiving conditions; the automatic material receiving device is used for deeply cooling the powdered activated carbon and recycling and packaging the powdered activated carbon. This recovery unit simple operation, the ability safety and stability carry out solid gas separation to powder active carbon regenerator tail gas to the powder active carbon in the tail gas is retrieved in the cooling, high-efficient practical.
Description
Technical Field
The utility model relates to the technical field of energy conservation and environmental protection, in particular to a device for recovering active carbon in tail gas of a powdered active carbon regenerating furnace.
Background
The powdered activated carbon is widely used as an adsorbent, the annual usage amount of various industries is considerable, and the recycling of the regenerated saturated activated carbon has strong economic and environmental benefits and is supported and encouraged by national policies. The heat regeneration method is the most applied and industrially most mature activated carbon regeneration method.
The powdered activated carbon can be cracked to generate a large amount of tail gas in the regeneration process, and because the regeneration furnace is regenerated under the condition of isolating oxygen, the interior of the furnace is in a reducing atmosphere, and when the organic matter is cracked to generate a large amount of combustible gases such as carbon monoxide, hydrogen, methane and the like, a part of water vapor which is not consumed by the water gas reaction can be remained. When the content of organic matters is higher, the amount of water vapor generated by decomposition is increased, and the dew point of the tail gas is increased. When the temperature of the tail gas is lower than the dew point, water is separated out to form water mist which is adhered to the pipeline and the dust removal cloth bag. Because the tail gas contains a large amount of hydrophilic powdered activated carbon and ash, after capturing water mist in the tail gas or contacting condensed water on the surface of a pipeline or a cloth bag, a high-viscosity mixture can be formed to block the pipeline or the dust removal cloth bag. Affecting the normal emission of the tail gas and the recovery of the powdered activated carbon in the tail gas.
Therefore, there is a need to design a device for recovering activated carbon from tail gas of a powdered activated carbon regeneration furnace to overcome the above problems.
SUMMERY OF THE UTILITY MODEL
In order to avoid the problems, the device for recovering the activated carbon in the tail gas of the powdered activated carbon regeneration furnace is provided, and is used for achieving solid-gas separation and cooling the powdered activated carbon under the working condition of the tail gas with high water content and achieving the purpose of recovering the powdered activated carbon under the working condition.
The utility model provides a device for recovering active carbon in tail gas of a powdered active carbon regenerating furnace, which comprises: the tail gas collecting device, the solid-gas separating device and the automatic material receiving device are sequentially connected;
the tail gas collecting device comprises a tail gas discharge pipe of the regenerating furnace and a tail gas cooling and collecting tower, and the gas inlet end of the tail gas cooling and collecting tower is connected with the tail gas discharge end of the regenerating furnace through the tail gas discharge pipe of the regenerating furnace and is used for collecting and cooling the tail gas of the powdered activated carbon regenerating furnace;
the solid-gas separation device comprises a segmented cooling material conveying auger, a high-temperature resistant dust remover and a material receiving isolation bin, wherein the gas inlet end of the segmented cooling material conveying auger is connected with the gas outlet end of the tail gas cooling and collecting tower and is used for segmented cooling of the entering gas;
the automatic material receiving device comprises a bag-type dust collector, a pneumatic material receiving fan and a material receiving isolation bin, wherein the bag-type dust collector is connected with the material receiving isolation bin, the air closing fan is arranged at a discharge port of the bag-type dust collector and used for discharging the powdered activated carbon collected in the bag-type dust collector, and the pneumatic material receiving fan is connected with an air outlet end of the bag-type dust collector and used for reducing the temperature of the powdered activated carbon in the bag-type dust collector and discharging the material receiving tail gas.
Preferably, the tail gas discharge pipe of the regenerating furnace is connected with the tail gas cooling and collecting tower through a high-temperature-resistant flexible connecting mechanism.
Preferably, the tail gas cooling and collecting tower is connected with a plurality of regenerator tail gas discharge pipes, and a set of regenerator tail gas ash removal mechanism is arranged in each regenerator tail gas discharge pipe and used for dredging the pipeline to prevent the blockage of the tail gas discharge pipeline.
Preferably, a section of temperature-resistant heat exchange interlayer is arranged between the high-temperature-resistant dust remover and the tail gas cooling and collecting tower of the sectional cooling material conveying auger, and the tail gas is secondarily cooled by high-temperature cooling liquid with the temperature higher than the dew point temperature of the steam of the tail gas so as to avoid the condensation and the separation of the steam.
Preferably, the sectional cooling material conveying auger is provided with an explosion-proof pressure relief opening between the high-temperature-resistant dust remover and the tail gas cooling and collecting tower.
Preferably, the segmented cooling material conveying auger is provided with a low-temperature cooling interlayer behind the high-temperature resistant dust remover, and cooling water is introduced for cooling the powdered activated carbon falling into the auger to a temperature below the ignition point.
Preferably, a bypass loop is arranged on the high-temperature resistant dust remover, and a bypass pipeline control valve is arranged on the bypass loop.
Preferably, the air outlet end of the high-temperature resistant dust remover is connected with a regeneration tail gas emission fan, and an oxygen content monitor is arranged between the high-temperature resistant dust remover and the regeneration tail gas emission fan.
Preferably, the high-temperature resistant dust collector adopts a high-temperature resistant dust collection cloth bag or a sintered ceramic tube as a filter material, and adopts inert gas such as nitrogen and the like as a back-blowing medium.
Preferably, pneumatic control valves are arranged at the feeding and discharging positions of the material receiving separation bin.
Compared with the prior art, the utility model has the following beneficial effects: this recovery unit simple operation, the ability safety and stability carry out solid gas separation to powder active carbon regenerator tail gas to the powder active carbon in the tail gas is retrieved in the cooling, high-efficient practical.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for recovering activated carbon from tail gas of a powdered activated carbon regenerating furnace according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a sectional cooling material conveying auger according to another preferred embodiment of the present invention;
detailed description of the embodiments reference is made to the accompanying drawings in which:
a. a tail gas collecting device, a solid-gas separating device, an automatic material receiving device,
1. the device comprises a regeneration furnace tail gas discharge pipe, 2, a high-temperature-resistant flexible connecting mechanism, 3, a regeneration furnace tail gas ash removal mechanism, 4, a tail gas cooling and collecting tower, 5, a sectional cooling material conveying auger, 6, a high-temperature-resistant dust remover, 7, a bypass pipeline control valve, 8, an oxygen content detector, 9, a regeneration tail gas discharge fan, 10, a pneumatic control valve, 11, a material receiving isolation bin, 12, a fan closing machine, 13, a bag-type dust remover, 14, a pneumatic material receiving fan, 15 and a powder activated carbon material receiving ton bag.
Detailed Description
The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and fig. 2, the present embodiment provides an apparatus for recovering activated carbon from tail gas of a powdered activated carbon regeneration furnace, including: the tail gas collecting device a, the solid-gas separating device b and the automatic material receiving device c are sequentially connected. The tail gas collecting device a is mainly used for collecting tail gas discharged from each tail gas discharge port, and is convenient for subsequent uniform treatment; the solid-gas separation device b is mainly used for separating the powdered activated carbon from the tail gas, and cooling the powdered activated carbon while discharging the high-temperature tail gas so that the powdered activated carbon has subsequent material receiving conditions; and the automatic material receiving device c is used for deeply cooling the powdered activated carbon and recycling and packaging the powdered activated carbon.
As shown in fig. 1, the tail gas collecting device a includes a tail gas discharge pipe 1 of the regenerating furnace and a tail gas cooling and collecting tower 4, and an air inlet end of the tail gas cooling and collecting tower 4 is connected with a tail gas discharge end of the regenerating furnace through the tail gas discharge pipe 1 of the regenerating furnace for collecting and cooling the tail gas of the powdered activated carbon regenerating furnace.
Wherein, regenerator tail gas discharge pipe 1 is connected with tail gas cooling collecting tower 4 through high temperature resistant flexible coupling mechanism 2, the follow-up technology centralized processing of being convenient for. The tail gas cooling and collecting tower 4 is used for primarily cooling the high-temperature tail gas discharged by the regeneration furnace, a high-temperature cooling liquid with the temperature higher than the dew point temperature of the water vapor of the tail gas is introduced into an interlayer outside the cooling tower, the temperature of the tail gas is reduced to be within 300 ℃ from 800-900 ℃, the process requirement of a subsequent solid-gas separation section is met, and meanwhile, the condensation and the separation of the water vapor are avoided. And tail gas cooling collecting tower 4 is connected with a plurality of regenerator tail gas delivery pipes 1, sets up one set of regenerator tail gas deashing mechanism 3 in every regenerator tail gas delivery pipe 1 for dredge the pipeline and prevent that the tail gas discharge pipeline from blockking up, guarantee that the tail gas discharges unobstructed.
As shown in fig. 1 and 2, the solid-gas separation device b comprises a sectional cooling material conveying auger 5, a high-temperature resistant dust remover 6 and a material receiving isolation bin 11. Wherein, the gas inlet end of the sectional cooling material conveying auger 5 is connected with the gas outlet end of the tail gas cooling collecting tower 4 and is used for cooling the entering gas in a sectional manner; the high-temperature resistant dust remover 6 is connected with the exhaust end in the middle of the segmented cooling material conveying auger 5 and is used for separating solid and gas of the entering gas; the material receiving isolation bin 11 is connected with the air outlet end of the sectional cooling material conveying auger 5, and the powdered activated carbon separated by cooling of the sectional cooling material conveying auger 5 is collected.
The segmented cooling material conveying auger 5 adopts a double-shaft auger conveying structure, and the principle of self arch breaking of the double-shaft auger is utilized, so that the condition that material discharging is not smooth due to adhesion of materials on a twisted blade caused by moisture condensation after equipment failure can be effectively prevented, and the equipment reliability is higher.
Specifically, a section of temperature-resistant heat exchange interlayer is arranged between the high-temperature-resistant dust remover 6 and the tail gas cooling and collecting tower 4 of the sectional cooling material conveying auger 5, and the tail gas is secondarily cooled by high-temperature cooling liquid with the temperature higher than the dew point temperature of water vapor of the tail gas, so that the water vapor is prevented from being condensed and separated out. The sectional cooling material conveying auger 5 is provided with an explosion-proof pressure relief opening between the high-temperature-resistant dust remover 6 and the tail gas cooling and collecting tower 4, and is used for relieving pressure when an accidental detonation accident occurs, so that the safety of personnel and equipment is protected. And the segmented cooling material conveying auger 5 is provided with a low-temperature cooling interlayer behind the high-temperature resistant dust collector 6, and cooling water is introduced for cooling the powdered activated carbon falling into the auger to below the ignition point.
Meanwhile, a bypass loop is arranged on the high-temperature-resistant dust remover 6, a bypass pipeline control valve 7 is arranged on the bypass loop, and when equipment breaks down and the dust remover is blocked due to the occurrence of a water-gas condensation accident, the bypass loop is opened emergently to discharge tail gas, so that the tail gas is ensured to be discharged smoothly. And the gas outlet end of the high temperature resistant dust remover 6 is connected with a regeneration tail gas emission fan 9, an oxygen content monitor 8 is arranged between the high temperature resistant dust remover 6 and the regeneration tail gas emission fan 9, the oxygen concentration in the tail gas is detected in real time, when the oxygen concentration is increased, the system gives an alarm, so that a worker can conveniently stop the machine for inspection and take necessary operation in advance, and the combustible gas can be prevented from exploding after the oxygen is increased. The high-temperature resistant dust collector 6 adopts a high-temperature resistant dust collection cloth bag or a sintered ceramic tube as a filter material, and adopts inert gases such as nitrogen and the like as a back-blowing medium to prevent air from entering a solid-gas separation section.
And pneumatic control valves 10 are arranged at the feeding and discharging positions of the material receiving separation bin 11, so that the separated powdered activated carbon is collected and fed to a subsequent automatic material receiving process section. The two valves are opened in turn, when the pneumatic control valve 10 at the feeding position is opened, the powdered activated carbon in the sectional cooling conveying auger falls into the material receiving isolation bin 11, and the pneumatic control valve 10 at the discharging position is in a closed state, so that air is prevented from being mixed into the solid-gas separation section; when the pneumatic control valve 10 at the feeding position is closed and the pneumatic control valve 10 at the discharging position is opened, the materials in the material receiving isolation bin 11 are discharged. During discharging, inert gas such as nitrogen can be introduced to exhaust air in the material receiving isolation bin 11, so as to prepare for next material receiving.
As shown in fig. 1, the automatic material receiving device c includes a bag-type dust collector 13, a pneumatic material receiving fan 14 and a shutdown fan 12. The bag-type dust collector 13 is connected with the material receiving isolation bin 11, the air closing fan 12 is arranged at a discharge port of the bag-type dust collector 13 and used for discharging the powder activated carbon collected in the bag-type dust collector 13, the pneumatic material receiving fan 14 is connected with an air outlet end of the bag-type dust collector 13 and used for reducing the temperature of the powder activated carbon in the bag-type dust collector 13, the temperature is not higher than 10 ℃ of the atmospheric temperature, the technical requirement of bagging and packaging is met, and the material receiving tail gas is discharged into the powder activated carbon material receiving ton bag 15.
On the other hand, the tail gas cooling collection tower 4 and the high temperature cooling section of the sectional cooling material conveying auger 5 that this embodiment adopts adopt the high temperature coolant liquid that is higher than tail gas dew point temperature, can effectively prevent to collect tail gas in-process aqueous vapor and condense, prevent that the material from the adhesion on pipeline, filter, jam passageway and dust remover filter media. Meanwhile, the high-temperature cooling liquid can be heated by utilizing the heat energy of the tail gas of the regeneration furnace, and no additional heat source is needed in the continuous production process, so that the energy is saved, the environment is protected, and the energy consumption of the production line is reduced. And the solid-gas separation device b has the functions of preventing water and gas condensation, separating solid and gas, monitoring on line, preventing explosion, cooling materials, protecting against accidents and the like, and can continuously work to ensure the stable operation of equipment. Automatic material collecting device c utilizes pneumatic conveying system when accomplishing the receipts material, through reasonable matching amount of wind, reaches the purpose of carrying out the degree of depth wind energy to the material when receiving the material, makes the material satisfy the purpose of direct bagging-off packing.
This recovery unit simple operation, the ability safety and stability carry out solid gas separation to powder active carbon regenerator tail gas to the powder active carbon in the tail gas is retrieved in the cooling, high-efficient practical.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an active carbon recovery unit in powder active carbon regenerator tail gas which characterized in that includes: the tail gas collecting device, the solid-gas separating device and the automatic material receiving device are sequentially connected;
the tail gas collecting device comprises a tail gas discharge pipe of the regenerating furnace and a tail gas cooling and collecting tower, and the gas inlet end of the tail gas cooling and collecting tower is connected with the tail gas discharge end of the regenerating furnace through the tail gas discharge pipe of the regenerating furnace and is used for collecting and cooling the tail gas of the powdered activated carbon regenerating furnace;
the solid-gas separation device comprises a segmented cooling material conveying auger, a high-temperature resistant dust remover and a material receiving isolation bin, wherein the gas inlet end of the segmented cooling material conveying auger is connected with the gas outlet end of the tail gas cooling and collecting tower and is used for segmented cooling of the entering gas;
the automatic material receiving device comprises a bag-type dust collector, a pneumatic material receiving fan and a material receiving isolation bin, wherein the bag-type dust collector is connected with the material receiving isolation bin, the air closing fan is arranged at a discharge port of the bag-type dust collector and used for discharging the powdered activated carbon collected in the bag-type dust collector, and the pneumatic material receiving fan is connected with an air outlet end of the bag-type dust collector and used for reducing the temperature of the powdered activated carbon in the bag-type dust collector and discharging the material receiving tail gas.
2. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: the tail gas discharge pipe of the regenerating furnace is connected with the tail gas cooling and collecting tower through a high-temperature-resistant flexible connecting mechanism.
3. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: the tail gas cooling and collecting tower is connected with a plurality of regenerator tail gas discharge pipes, and a set of regenerator tail gas ash removal mechanism is arranged in each regenerator tail gas discharge pipe and used for dredging a pipeline to prevent a tail gas discharge pipeline from being blocked.
4. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: a section of temperature-resistant heat exchange interlayer is arranged between the high-temperature-resistant dust remover and the tail gas cooling and collecting tower of the sectional cooling material conveying auger, and high-temperature cooling liquid with the temperature higher than the dew point temperature of tail gas water vapor is used for carrying out secondary cooling on the tail gas to avoid the water vapor from condensing and separating out.
5. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: an explosion-proof pressure relief opening is formed between the high-temperature-resistant dust remover and the tail gas cooling and collecting tower by the sectional cooling material conveying auger.
6. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: the segmented cooling material conveying auger is provided with a low-temperature cooling interlayer behind the high-temperature resistant dust remover, and cooling water is introduced for cooling the powdered activated carbon falling into the auger to below the ignition point.
7. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: a bypass loop is arranged on the high-temperature resistant dust remover, and a bypass pipeline control valve is arranged on the bypass loop.
8. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: the air outlet end of the high-temperature resistant dust remover is connected with a regeneration tail gas emission fan, and an oxygen content monitor is arranged between the high-temperature resistant dust remover and the regeneration tail gas emission fan.
9. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: the high-temperature resistant dust remover adopts a high-temperature resistant dust removing cloth bag or a sintered ceramic tube as a filter material and adopts inert gases such as nitrogen and the like as a back-blowing medium.
10. The apparatus for recovering activated carbon from exhaust gas of a powdered activated carbon regenerating oven as set forth in claim 1, characterized in that: pneumatic control valves are arranged at the feeding and discharging positions of the material receiving and separating bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121197059.6U CN215996692U (en) | 2021-05-31 | 2021-05-31 | Activated carbon recovery unit in powder activated carbon regenerator tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121197059.6U CN215996692U (en) | 2021-05-31 | 2021-05-31 | Activated carbon recovery unit in powder activated carbon regenerator tail gas |
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| CN215996692U true CN215996692U (en) | 2022-03-11 |
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| CN202121197059.6U Active CN215996692U (en) | 2021-05-31 | 2021-05-31 | Activated carbon recovery unit in powder activated carbon regenerator tail gas |
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- 2021-05-31 CN CN202121197059.6U patent/CN215996692U/en active Active
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