CN107970904B - Activated carbon regeneration system and use method - Google Patents
Activated carbon regeneration system and use method Download PDFInfo
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- CN107970904B CN107970904B CN201810075336.2A CN201810075336A CN107970904B CN 107970904 B CN107970904 B CN 107970904B CN 201810075336 A CN201810075336 A CN 201810075336A CN 107970904 B CN107970904 B CN 107970904B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
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Abstract
The invention discloses an activated carbon regeneration system which comprises a storage bin, a desorption bed, an air heater, a preheater and a high-temperature oxidizer. The invention also discloses a using method of the activated carbon regeneration system. The beneficial effects of the invention are as follows: the regeneration system device occupies small area and has low cost; after the temperature in the high-temperature oxidizer reaches over 650 ℃, the combustion oxidation without auxiliary heat is realized later, the heat energy recycling is realized, and the cost is further reduced; and the upper part and the lower part of the desorption bed are provided with temperature measuring points which are linked with the conveyor, so that the off-line continuous operation is realized, and the labor is saved.
Description
Technical Field
The invention relates to an active carbon regeneration system and a use method thereof, belonging to the technical field of regenerated resource devices.
Background
At present, the activated carbon is widely used in the field of waste gas treatment, but the activated carbon can generate saturation phenomenon after being used for a period of time; in order to reduce the cost and save the resources, the saturated activated carbon needs to be reused after desorption regeneration treatment; in industrial production, two adsorption discs are usually used alternately, one for adsorption and one for desorption; the existing saturated activated carbon desorption method mainly uses a high-temperature steam desorption regeneration method, when a desorption regeneration device is additionally arranged on equipment for alternately using the two adsorption discs, the problems of large occupied area, large investment and low utilization frequency of the desorption regeneration device can be generated, especially when the activated carbon adsorption disc is used for adsorbing the organic waste gas with low concentration and large air quantity, the adsorption period is long because of large air quantity, and if the two adsorption discs are alternately used and the desorption regeneration device is arranged on the adsorption disc under the alternation, the problems of large occupied area, large investment and low utilization frequency of the desorption regeneration device can be more serious. Therefore, there is a need for an activated carbon regeneration system with low investment in equipment and high utilization rate.
Disclosure of Invention
In order to overcome the above drawbacks, the present invention provides an activated carbon regeneration system.
In order to overcome the defects, the invention provides a using method of the activated carbon regeneration system.
In order to achieve the above object, the technical scheme of the present invention is as follows: the active carbon regeneration system comprises a storage bin, a desorption bed, an air heater, a preheater and a high-temperature oxidizer, wherein the air heater and the preheater are both heat exchangers, and an auxiliary heating device is arranged in the high-temperature oxidizer; the discharging port of the storage bin is communicated with a desorption bed, and a conveyor for discharging is arranged below the desorption bed; the lower part and the upper part of the desorption bed are respectively provided with an annular isolation air duct formed by pore plates; the upper annular isolation air duct is provided with a gas outlet, and the preheater is provided with a mixed gas inlet, a mixed gas outlet, an A high-temperature gas inlet and an A high-temperature gas outlet; the air heater is provided with an air inlet, an air outlet, a B high-temperature air inlet and a B high-temperature air outlet; the gas outlet is connected with a mixed gas inlet, the mixed gas outlet is communicated with a high-temperature oxidizer inlet, the high-temperature oxidizer outlet is connected with an A high-temperature gas inlet, the A high-temperature gas outlet is communicated with a B high-temperature gas inlet, the air outlet is communicated with a lower annular isolation air duct, and the air inlet is connected with a blast device; the high-temperature gas outlet is connected with a tail gas treatment device through a draught fan, and the draught fan provides power for gas circulation in the whole system; the lower part of the desorption bed is provided with a temperature measuring point T1, and the upper part of the desorption bed is provided with a temperature measuring point T2; the temperature measuring point T1 and the temperature measuring point T2 are respectively connected with a control system of the conveyor and control the start and stop of the conveyor.
Preferably, the upper annular isolation air duct is provided with an air supplementing port.
Preferably, an auxiliary line is communicated between the air outlet and the air inlet, an auxiliary line valve is arranged on the auxiliary line, a temperature control device is arranged on a pipeline between the air outlet and the lower annular isolation air duct, and the temperature control device is connected with the auxiliary line valve.
Preferably, a gravity level gauge for indicating the storage amount of the materials is arranged in the storage bin.
Preferably, the air heater and the preheater are both vertical tube type heat exchangers.
Preferably, the auxiliary heating device is electric heating or gas heating.
The invention also discloses a using method of the activated carbon regeneration system, which comprises the following steps:
1) Heating the internal gas in the high-temperature oxidizer at 650-850 ℃;
2) The heated air in the step 1) enters the A high-temperature air inlet of the preheater through the outlet of the high-temperature oxidizer and is discharged from the A high-temperature air outlet, and in the process, the gas entering from the mixed gas inlet is preheated;
3) In the step 2), the air discharged from the high-temperature air outlet enters the high-temperature air inlet of the air heater B and is discharged from the high-temperature air outlet, in the process, the air entering from the air inlet is heated, the air discharged from the air outlet is conveyed into the lower annular isolation air duct of the desorption bed, the activated carbon on the desorption bed is heated through the orifice plate, at the moment, the temperature measuring point T1 is monitored, and if the temperature is lower than 120 ℃, the conveyor stops running;
4) The mixed gas of the desorption gas and the air, which are desorbed by the activated carbon in the step 3) through heating, enters an upper annular isolation air duct of the desorption bed, at the moment, a temperature measuring point T2 monitors the temperature, and if the temperature is more than or equal to 120 ℃, a conveyor is started to discharge outwards;
5) The mixed gas in the step 4) is conveyed to a mixed gas inlet of a preheater for preheating, and is conveyed to a high-temperature oxidizer from a mixed gas outlet for high-temperature oxidation;
6) Cycling steps 1) -5).
Compared with the prior art, the invention has the beneficial effects that: an induced draft fan on the air heater provides power for gas circulation in the whole system; the regeneration system device occupies small area and has low cost; after the temperature in the high-temperature oxidizer reaches over 650 ℃, the combustion oxidation without auxiliary heat is realized later, the heat energy recycling is realized, and the cost is further reduced; and the upper part and the lower part of the desorption bed are provided with temperature measuring points which are linked with the conveyor, so that the off-line continuous operation is realized, and the labor is saved.
Drawings
Fig. 1 is a schematic diagram of a system structure according to embodiment 1 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The active carbon regeneration system shown in fig. 1 comprises a storage bin 1, a desorption bed 2, an air heater 3, a preheater 4 and a high-temperature oxidizer 5, wherein a gravity level gauge 101 for indicating the storage amount of materials is arranged in the storage bin 1, the air heater 3 and the preheater 4 are vertical shell and tube heat exchangers, and an electric heating or gas heating auxiliary heating device is arranged in the high-temperature oxidizer 5; the discharging port of the storage bin 1 is communicated with the desorption bed 2, and a conveyor 6 for discharging is arranged below the desorption bed 2; annular isolation air channels (201, 202) formed by pore plates are respectively arranged at the lower part and the upper part of the desorption bed 2; the upper annular isolation air duct 202 is provided with a gas outlet 2021 and an air supplementing port 2022, the air supplementing port 2022 can provide air for the upper annular isolation air duct 202, and negative pressure is formed in the upper annular isolation air duct 202 under the action of an induced draft fan on the air heater 3 so as to prevent desorption gas from escaping from the storage bin 1; the preheater 4 is provided with a mixed gas inlet 401, a mixed gas outlet 402, a high-temperature gas inlet 403 and a high-temperature gas outlet 404; the air heater 3 is provided with an air inlet 301, an air outlet 302, a B high temperature air inlet 303, and a B high temperature air outlet 304; the gas outlet 2021 is connected with the mixed gas inlet 401, the mixed gas outlet 402 is communicated with the high-temperature oxidizer inlet 501, the high-temperature oxidizer outlet 502 is connected with the A high-temperature gas inlet 403, the A high-temperature gas outlet 404 is communicated with the B high-temperature gas inlet 303, the air outlet 302 is communicated with the lower annular isolation air duct 201, and the air inlet 301 is connected with the air blowing device 305; the high-temperature gas outlet 304 is connected with a tail gas treatment device through a draught fan, and the draught fan provides power for gas circulation in the whole system; the lower part of the desorption bed 2 is provided with a temperature measuring point T1, and the upper part is provided with a temperature measuring point T2; the temperature measuring point T1 and the temperature measuring point T2 are respectively connected with a control system of the conveyor 6 and control the starting and stopping of the conveyor 6.
In order to regulate the temperature of the air outlet, a secondary line is communicated between the air outlet 302 and the air inlet 301, a secondary line valve 307 is arranged on the secondary line 306, a temperature control device is arranged on a pipeline between the air outlet 302 and the lower annular isolation air duct 201, the temperature control device is connected with the secondary line valve 307, the secondary line valve 307 is further controlled by detecting the temperature, and the air which is discharged from the air outlet 302 and is lower than the set temperature is sent into the air inlet 301 again for cyclic reheating through the flow.
Example 2
A method of using an activated carbon regeneration system comprising the steps of:
1) Heating the internal gas in the high-temperature oxidizer at 650-850 ℃;
2) The heated air in the step 1) enters the A high-temperature air inlet of the preheater through the outlet of the high-temperature oxidizer and is discharged from the A high-temperature air outlet, and in the process, the gas entering from the mixed gas inlet is preheated;
3) In the step 2), the air discharged from the high-temperature air outlet enters the high-temperature air inlet of the air heater B and is discharged from the high-temperature air outlet, in the process, the air entering from the air inlet is heated, the air discharged from the air outlet is conveyed into the lower annular isolation air duct of the desorption bed, the activated carbon on the desorption bed is heated through the orifice plate, at the moment, the temperature measuring point T1 is monitored, and if the temperature is lower than 120 ℃, the conveyor stops running;
4) The mixed gas of the desorption gas and the air, which are desorbed by the activated carbon in the step 3) through heating, enters an upper annular isolation air duct of the desorption bed, at the moment, a temperature measuring point T2 monitors the temperature, and if the temperature is more than or equal to 120 ℃, a conveyor is started to discharge outwards;
5) The mixed gas in the step 4) is conveyed to a mixed gas inlet of a preheater for preheating, and is conveyed to a high-temperature oxidizer from a mixed gas outlet for high-temperature oxidation;
6) Cycling steps 1) -5). The technical scheme of the invention is not limited to the specific embodiment, and all technical modifications made according to the technical scheme of the invention fall within the protection scope of the invention.
Claims (7)
1. An activated carbon regeneration system, characterized in that: the device comprises a storage bin, a desorption bed, an air heater, a preheater and a high-temperature oxidizer, wherein the air heater and the preheater are both heat exchangers, and an auxiliary heating device is arranged in the high-temperature oxidizer; the discharging port of the storage bin is communicated with a desorption bed, and a conveyor for discharging is arranged below the desorption bed; the lower part and the upper part of the desorption bed are respectively provided with an annular isolation air duct formed by pore plates; the upper annular isolation air duct is provided with a gas outlet, and the preheater is provided with a mixed gas inlet, a mixed gas outlet, an A high-temperature gas inlet and an A high-temperature gas outlet; the air heater is provided with an air inlet, an air outlet, a B high-temperature air inlet and a B high-temperature air outlet; the gas outlet is connected with a mixed gas inlet, the mixed gas outlet is communicated with a high-temperature oxidizer inlet, the high-temperature oxidizer outlet is connected with an A high-temperature gas inlet, the A high-temperature gas outlet is communicated with a B high-temperature gas inlet, the air outlet is communicated with a lower annular isolation air duct, and the air inlet is connected with a blast device; the high-temperature gas outlet is connected with a tail gas treatment device through a draught fan; the lower part of the desorption bed is provided with a temperature measuring point T1, and the upper part of the desorption bed is provided with a temperature measuring point T2; the temperature measuring point T1 and the temperature measuring point T2 are respectively connected with a control system of the conveyor and control the start and stop of the conveyor.
2. The activated carbon regeneration system of claim 1, wherein: the upper annular isolation air duct is provided with an air supplementing port.
3. The activated carbon regeneration system according to claim 1 or 2, characterized in that: an auxiliary line is communicated between the air outlet and the air inlet, an auxiliary line valve is arranged on the auxiliary line, a temperature control device is arranged on a pipeline between the air outlet and the lower annular isolation air duct, and the temperature control device is connected with the auxiliary line valve.
4. An activated carbon regeneration system as recited in claim 3, wherein: and a gravity level gauge for indicating the storage quantity of the materials is arranged in the storage bin.
5. The activated carbon regeneration system of claim 1, wherein: the air heater and the preheater are both vertical tube type heat exchangers.
6. The activated carbon regeneration system of claim 1, wherein: the auxiliary heating device is electrically heated or heated by fuel gas.
7. A method of using the activated carbon regeneration system of any one of claims 1-6, wherein: the method comprises the following steps:
1) Heating the internal gas in the high-temperature oxidizer at 650-850 ℃;
2) The heated air in the step 1) enters the A high-temperature air inlet of the preheater through the outlet of the high-temperature oxidizer and is discharged from the A high-temperature air outlet, and in the process, the gas entering from the mixed gas inlet is preheated;
3) In the step 2), the air discharged from the high-temperature air outlet enters the high-temperature air inlet of the air heater B and is discharged from the high-temperature air outlet, in the process, the air entering from the air inlet is heated, the air discharged from the air outlet is conveyed into the lower annular isolation air duct of the desorption bed, the activated carbon on the desorption bed is heated through the orifice plate, at the moment, the temperature measuring point T1 is monitored, and if the temperature is lower than 120 ℃, the conveyor stops running;
4) The mixed gas of the desorption gas and the air, which are desorbed by the activated carbon in the step 3) through heating, enters an upper annular isolation air duct of the desorption bed, at the moment, a temperature measuring point T2 monitors the temperature, and if the temperature is more than or equal to 120 ℃, a conveyor is started to discharge outwards;
5) The mixed gas in the step 4) is conveyed to a mixed gas inlet of a preheater for preheating, and is conveyed to a high-temperature oxidizer from a mixed gas outlet for high-temperature oxidation;
6) Cycling steps 1) -5).
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| CN111346626A (en) * | 2020-04-07 | 2020-06-30 | 索红卫 | Activated carbon desorption method and device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0377619A (en) * | 1989-08-22 | 1991-04-03 | Nittetsu Kakoki Kk | Method for regenerating activated carbon |
| CN102188877A (en) * | 2011-03-25 | 2011-09-21 | 天津赛智科技发展有限公司 | High-efficiency energy-saving desorption system of industrial volatilizable organic pollutant |
| CN102941000A (en) * | 2012-11-12 | 2013-02-27 | 天津市联合环保工程设计有限公司 | Organic waste gas multifunctional integral processing device |
| WO2014092510A1 (en) * | 2012-12-14 | 2014-06-19 | 서강대학교 산학협력단 | Temperature and pressure swing moving bed adsorption process system using novel heat exchange system |
| CN104958993A (en) * | 2015-06-23 | 2015-10-07 | 江苏中远环保科技有限公司 | Novel desorption regeneration process and device using granular active carbon adsorption and vapor indirect heating |
| CN105169886A (en) * | 2015-10-30 | 2015-12-23 | 黄文科 | Efficient energy-saving large-air-quantity low-concentration organic waste gas recovery and treatment device and method |
| CN208082484U (en) * | 2018-01-26 | 2018-11-13 | 索红卫 | A kind of regenerating active carbon system |
-
2018
- 2018-01-26 CN CN201810075336.2A patent/CN107970904B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0377619A (en) * | 1989-08-22 | 1991-04-03 | Nittetsu Kakoki Kk | Method for regenerating activated carbon |
| CN102188877A (en) * | 2011-03-25 | 2011-09-21 | 天津赛智科技发展有限公司 | High-efficiency energy-saving desorption system of industrial volatilizable organic pollutant |
| CN102941000A (en) * | 2012-11-12 | 2013-02-27 | 天津市联合环保工程设计有限公司 | Organic waste gas multifunctional integral processing device |
| WO2014092510A1 (en) * | 2012-12-14 | 2014-06-19 | 서강대학교 산학협력단 | Temperature and pressure swing moving bed adsorption process system using novel heat exchange system |
| CN104958993A (en) * | 2015-06-23 | 2015-10-07 | 江苏中远环保科技有限公司 | Novel desorption regeneration process and device using granular active carbon adsorption and vapor indirect heating |
| CN105169886A (en) * | 2015-10-30 | 2015-12-23 | 黄文科 | Efficient energy-saving large-air-quantity low-concentration organic waste gas recovery and treatment device and method |
| CN208082484U (en) * | 2018-01-26 | 2018-11-13 | 索红卫 | A kind of regenerating active carbon system |
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