CN114669285A - Saturated active carbon high temperature anaerobic desorption regeneration system - Google Patents
Saturated active carbon high temperature anaerobic desorption regeneration system Download PDFInfo
- Publication number
- CN114669285A CN114669285A CN202210445995.7A CN202210445995A CN114669285A CN 114669285 A CN114669285 A CN 114669285A CN 202210445995 A CN202210445995 A CN 202210445995A CN 114669285 A CN114669285 A CN 114669285A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- air inlet
- air
- valve
- activated carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 238000003795 desorption Methods 0.000 title claims abstract description 45
- 238000011069 regeneration method Methods 0.000 title claims abstract description 27
- 230000008929 regeneration Effects 0.000 title claims abstract description 22
- 229910052799 carbon Inorganic materials 0.000 title claims description 11
- 229920006395 saturated elastomer Polymers 0.000 title claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 52
- 230000003647 oxidation Effects 0.000 claims abstract description 51
- 230000005855 radiation Effects 0.000 claims abstract description 50
- 239000007789 gas Substances 0.000 claims abstract description 28
- 239000007800 oxidant agent Substances 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 57
- 229910052757 nitrogen Inorganic materials 0.000 claims description 28
- 238000000605 extraction Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 30
- 239000001301 oxygen Substances 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 37
- 238000000034 method Methods 0.000 description 30
- 230000008569 process Effects 0.000 description 27
- 238000007599 discharging Methods 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000002156 adsorbate Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B01D53/04—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 stationary adsorbents
-
- 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
-
- 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
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a high-temperature anaerobic desorption regeneration system for saturated activated carbon, which comprises a vacuum thermal radiation furnace, a heater, a first air inlet pipeline, a second air inlet pipeline, an air exhaust pipeline and a pressure relief pipeline, wherein the vacuum thermal radiation furnace is connected with the heater through the first air inlet pipeline; the air inlet end of the first air inlet pipeline and the air outlet end of the exhaust pipeline are both connected with a thermal cycle fan; the air inlet end of the first air inlet pipeline is also connected with an air source pipeline; the air outlet end of the exhaust pipeline is also connected with the air inlet end of the pressure relief pipeline; a first oxidation valve is arranged on the pressure relief pipeline; and the air outlet end of the air suction pipeline and the air outlet end of the pressure relief pipeline are both communicated with the oxidizer. The actual temperature of the saturated activated carbon layer reaches 350-500 ℃ or higher, and can reach more than 800 ℃ at most by vacuum low-oxygen thermal radiation heating; the invention can effectively improve the recovery rate of saturated activated carbon, and the non-condensable gas is directly discharged after being oxidized at high temperature by the oxidizer during desorption, thereby avoiding secondary pollution.
Description
Technical Field
The invention relates to the technical field of activated carbon regeneration, in particular to a high-temperature oxygen-free desorption regeneration system for saturated activated carbon.
Background
The active carbon is a product which consumes a large amount of resources in the environmental protection industry, has very good and effective adsorption removal effect on most volatile organic compounds, has stable removal rate before saturation, and is widely used in the market. At present, most of enterprises adopting activated carbon to adsorb and remove VOC have the defects that most of activated carbon is treated as solid waste after being saturated, the activated carbon is not recycled, great resource waste is caused, and other environmental protection problems are caused. Because the manufacturing of the activated carbon can also generate serious environmental protection problems, the regeneration of the saturated activated carbon is particularly important, the secondary pollution can be avoided by recycling, and the cost for purchasing the activated carbon again is reduced. The regeneration process is divided into chemical method, biological regeneration method, wet oxidation method, electrolytic oxidation method, heating regeneration method and the like. The heating regeneration method is the regeneration method with the longest development history and the most extensive application, and the heating regeneration process is to make the adsorbate desorbed at high temperature by utilizing the characteristic that the adsorbate in the adsorption saturated activated carbon can be desorbed from the activated carbon pores at high temperature, thereby opening the originally blocked pores of the activated carbon and recovering the adsorption performance of the activated carbon. After high temperature is applied, molecular vibration energy is increased, the adsorption equilibrium relationship is changed, and adsorbate molecules are separated from the surface of the activated carbon and enter a gas phase. Heating regeneration is a mainstream regeneration method because it can decompose various adsorbates, and thus has versatility and thorough regeneration.
The saturated activated carbon heating regeneration desorption system used in the market at present adopts aerobic low-temperature desorption, the temperature of a carbon layer is generally about 120 ℃, most of the carbon layer is still at a heating temperature rather than the temperature of the carbon layer in actual use, and the temperature of the carbon layer is actually less than 120 ℃, so that the desorption effect is poor, the activated carbon is rapidly invalid in a plurality of periods, enterprises still need to spend high cost to dispose the saturated activated carbon, and the environmental protection treatment cost of the enterprises is increased.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-temperature oxygen-free desorption regeneration system for saturated activated carbon, which can effectively improve the recovery rate of the saturated activated carbon through vacuum low-oxygen thermal radiation heating and has a good desorption effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a saturated activated carbon high-temperature oxygen-free desorption regeneration system comprises a vacuum thermal radiation furnace, a heater, a first air inlet pipeline, a second air inlet pipeline, an exhaust pipeline, an air extraction pipeline and a pressure relief pipeline;
the air inlet of the vacuum thermal radiation furnace is connected with the air outlet end of the second air inlet pipeline;
the exhaust port of the vacuum thermal radiation furnace is connected with the air inlet end of the exhaust pipeline;
the air exhaust port of the vacuum thermal radiation furnace is connected with the air inlet end of the air exhaust pipeline;
the air inlet end of the second air inlet pipeline is connected with the outlet of the heater;
the inlet of the heater is connected with the air outlet end of the first air inlet pipeline;
the air inlet end of the first air inlet pipeline and the air outlet end of the exhaust pipeline are both connected with a thermal cycle fan;
the air inlet end of the first air inlet pipeline is also connected with an air source pipeline;
the air outlet end of the exhaust pipeline is also connected with the air inlet end of the pressure relief pipeline; a first oxidation valve is arranged on the pressure relief pipeline;
and the air outlet end of the air suction pipeline and the air outlet end of the pressure relief pipeline are both communicated with the oxidizer.
Preferably, the air inlet of the vacuum thermal radiation furnace comprises a first air inlet and a second air inlet; the first air inlet and the second air inlet are connected with the air outlet end of the second air inlet pipeline through pipelines, and air inlet valves are arranged on the pipelines.
Preferably, the gas source pipeline comprises a nitrogen source pipeline and a steam source pipeline; a nitrogen valve is arranged on the nitrogen source pipeline; and a steam generator and a steam valve are arranged on the steam source pipeline.
Preferably, a vacuum valve, a vacuum pump and a second oxidation valve are arranged on the air exhaust pipeline.
Preferably, an exhaust valve and a condenser are arranged on the exhaust pipeline.
The invention has the beneficial effects that: the saturated activated carbon high-temperature oxygen-free desorption regeneration system disclosed by the invention is heated by vacuum low-oxygen thermal radiation, so that the actual temperature of a saturated activated carbon layer reaches 350-500 ℃ or higher, and can reach 800 ℃ at most, steam or high-temperature inert gas nitrogen is intermittently introduced in the whole process, the micro-positive pressure is always kept in the system, the desorption work is safely and efficiently carried out, and the desorption has the advantages of safety, energy conservation, high efficiency and the like.
The high-temperature oxygen-free desorption regeneration system for saturated activated carbon can effectively improve the recovery rate of the saturated activated carbon, has good desorption effect, directly discharges the non-condensable gas after being oxidized at high temperature by the oxidizer during desorption, avoids secondary pollution, and meets the requirement of environmental protection.
Drawings
Fig. 1 is a schematic structural view of the present invention, wherein the direction of arrows indicates the direction of medium flow.
In the figure, 1-vacuum heat radiation furnace, 11-first inlet, 12-second inlet, 13-outlet, 14-suction, 2-heater, 21-inlet, 22-outlet, 3-first inlet line, 31-nitrogen source line, 32-steam source line, 33-nitrogen valve, 34-steam generator, 35-steam valve, 4-second inlet line, 5-exhaust line, 51-exhaust valve, 52-condenser, 53-rapid cooling valve, 6-suction line, 61-vacuum valve, 62-vacuum pump, 63-second oxidation valve, 7-pressure relief line, 71-first oxidation valve, 8-heat circulation fan, 81-fan valve, 9-oxidation device, 10-inlet valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1: a saturated activated carbon high-temperature oxygen-free desorption regeneration system comprises a vacuum thermal radiation furnace 1, a heater 2, a first air inlet pipeline 3, a second air inlet pipeline 4, an air outlet pipeline 5, an air extraction pipeline 6 and a pressure relief pipeline 7;
the air inlet of the vacuum thermal radiation furnace 1 is connected with the air outlet end of the second air inlet pipeline 4;
an exhaust port 13 of the vacuum thermal radiation furnace 1 is connected with an air inlet end of the exhaust pipeline 5;
the air exhaust port 14 of the vacuum heat radiation furnace 1 is connected with the air inlet end of the air exhaust pipeline 6;
the air inlet end of the second air inlet pipeline 4 is connected with the outlet 22 of the heater 2;
the inlet 21 of the heater 2 is connected with the air outlet end of the first air inlet pipeline 3;
the air inlet end of the first air inlet pipeline 3 and the air outlet end of the exhaust pipeline 5 are both connected with a thermal circulation fan 8, and a fan valve 81 is arranged on the air inlet end of the first air inlet pipeline 3;
the air inlet end of the first air inlet pipeline 3 is also connected with an air source pipeline;
the air outlet end of the exhaust pipeline 5 is also connected with the air inlet end of the pressure relief pipeline 7; the pressure relief pipeline 7 is provided with a first oxidation valve 71, and when pressure relief is needed, the first oxidation valve 71 is opened;
and the air outlet end of the air suction pipeline 5 and the air outlet end of the pressure relief pipeline 7 are both communicated with an oxidizer 9.
Further, the inlet ports of the vacuum radiant heat furnace 1 include a first inlet port 11 and a second inlet port 12; the first air inlet 11 and the second air inlet 12 are both connected with the air outlet end of the second air inlet pipeline 4 through a pipeline, and an air inlet valve 10 is arranged on the pipeline; the gas source pipeline comprises a nitrogen source pipeline 31 and a steam source pipeline 32, and nitrogen or steam can be selectively introduced according to needs in actual work; a nitrogen valve 33 is arranged on the nitrogen source pipeline 31, and the nitrogen source pipeline 31 is used for introducing nitrogen; a steam generator 34 and a steam valve 35 are arranged on the steam source pipeline 32, and deionized water is stored in the steam generator 34; the air extraction pipeline 6 is provided with a vacuum valve 61, a vacuum pump 62 and a second oxidation valve 63; the exhaust line 5 is provided with an exhaust valve 51 and a condenser 52.
The working principle of the invention is as follows: the desorption regeneration system comprises the desorption of the saturated activated carbon by combining steam and nitrogen and the cooling process of the activated carbon, and the specific implementation process comprises the following steps:
a is waste water saturated activated carbon
1. Desorption and desorption: the used saturated activated carbon is loaded into the vacuum heat radiation furnace 1, the furnace door is closed, and the fan valve 81, the air inlet valve 10 and the air outlet valve 51 are opened. Starting the thermal circulation fan 8, the heater 2 and the heating device of the vacuum thermal radiation furnace 1. Under the action of the thermal circulation fan 8, the gas continuously circulates in a closed system formed by the vacuum thermal radiation furnace 1, the heater 2, the thermal circulation fan 8 and related pipelines, so that the temperature and the pressure in the furnace are gradually increased; when the pressure in the furnace reaches a set value (about 25 Kpa) in the heating process, opening a first oxidation valve 71 for pressure relief treatment, and allowing the decompressed ultrahigh-concentration gas to enter an oxidizer 9 through the first oxidation valve 71 for oxidation and be discharged after reaching the standard; when the pressure relief in the furnace reaches a set value (about 5 Kpa), the first oxidation valve 71 is closed, the micro positive pressure in the system is kept all the time, the circulation is repeated, and the heater 2 is closed until the temperature of the activated carbon layer is raised to the set temperature (about 600 ℃). The heat cycle fan 8 is turned off. The vacuum heat radiation furnace 1 continues to keep heating.
Continuously heating the saturated activated carbon under a heat radiation heating device of the vacuum heat radiation furnace 1, and continuously and gradually increasing the temperature and the pressure in the furnace; when the pressure in the furnace reaches a set value (about 25 Kpa) in the heating process, opening a first oxidation valve 71 for pressure relief treatment, and allowing the decompressed ultrahigh-concentration gas to enter an oxidizer 9 through the first oxidation valve 71 for oxidation and be discharged after reaching the standard; when the pressure relief in the furnace reaches a set value (about 5 Kpa), the first oxidation valve 71 is closed, the micro positive pressure in the system is kept all the time, and the circulation is repeated until the temperature of the activated carbon layer is raised to the set temperature (above 700 ℃).
When the temperature of the saturated activated carbon reaches the temperature (above 700 ℃), and the pressure in the furnace is relieved to the set value (about 5 Kpa), the first oxidation valve 71 is closed. Starting the activation, restarting the heater 2, starting the thermal cycle fan 8, starting the steam valve 35, appropriately supplementing steam to a pressure set value (about 10 Kpa), starting the first oxidation valve 71 to perform pressure relief treatment when the pressure in the furnace reaches the set value (about 25 Kpa) in the heating process, and allowing the decompressed ultrahigh-concentration gas to enter the oxidizer 9 through the first oxidation valve 71 to be oxidized and be discharged after reaching the standard; when the pressure relief in the furnace reaches a set value (about 5 Kpa), the first oxidation valve 71 is closed, and the cycle is repeated until the set activation time is reached (about 4 hours).
The micro-positive pressure in the system is always kept in the whole temperature rising process, so that the desorption process is safely and efficiently carried out.
2. Cooling activated carbon: after desorption and desorption are finished, the active carbon needs to be cooled to room temperature, the active carbon is moved out for waiting for next adsorption so as to be convenient for recycling, and the active carbon cooling has two modes, one mode is natural cooling along with the vacuum furnace, and the other mode is rapid cooling.
2.1, naturally cooling along with a vacuum furnace: the steam valve 35 is closed, the heater 2 is closed, the heat radiation heating device of the vacuum heat radiation furnace 1 is closed, and the heat circulation fan 8 is closed. And naturally cooling. When the pressure in the system is greater than a set value (about 25 Kpa) in the cooling process, opening a first oxidation valve 71 for pressure relief treatment, and discharging the decompressed gas after reaching the standard through an oxidizer 9; when the pressure relief in the system is lower than a set value (about 5 Kpa), the first oxidation valve 71 is closed. The above steps are repeated in a circulating way until the temperature of the activated carbon is reduced to the room temperature. The micro-positive pressure is always kept in the system in the whole cooling process, so that the cooling process is safely and efficiently carried out.
2.2 quick cooling: the steam valve 35 is closed, the heater 2 is closed, the heat radiation heating device of the vacuum heat radiation furnace 1 is closed, and the heat circulation fan 8 is closed. Opening the rapid cooling valve 53, injecting treated water into the activated carbon according to a specified flow rate to rapidly cool the activated carbon, opening the first oxidation valve 71 to perform pressure relief treatment when the pressure in the system is greater than a set value (about 25 Kpa) in the cooling process, and discharging the decompressed gas after reaching the standard through the oxidizer 9; when the pressure relief in the system is lower than a set value (about 5 Kpa), the first oxidation valve 71 is closed. The above steps are repeated in a circulating way until the temperature of the activated carbon is reduced to the room temperature. The micro-positive pressure is always kept in the system in the whole cooling process, so that the cooling process is safely and efficiently carried out.
B, waste gas saturated activated carbon
1. Desorption and desorption: filling the used saturated activated carbon into the vacuum thermal radiation furnace 1, closing the furnace door, starting the vacuum pump 62, starting the vacuum valve 61, pumping gas out by the vacuum pump 62, and discharging the gas after reaching the standard through opening the second oxidation valve 63 and the oxidizer 9, wherein the process is to perform deoxidization treatment on the saturated activated carbon;
when the oxygen content in the furnace reaches the desorption requirement, namely the oxygen content is lower than 10%, closing the vacuum pump 62, the vacuum valve 61 and the second oxidation valve 63, opening the nitrogen valve 33, opening the air inlet valve 10, opening the exhaust valve 51 to enable the pressure in the furnace to reach a set value (about 10 Kpa), and then closing the nitrogen valve 33;
starting the thermal circulation fan 8, the fan valve 81, the heater 2 and the heating device of the vacuum thermal radiation furnace 1. Under the action of the thermal circulation fan 8, the gas continuously circulates in a closed system formed by the vacuum thermal radiation furnace 1, the heater 2, the thermal circulation fan 8 and related pipelines, so that the temperature and the pressure in the furnace are gradually increased; when the pressure in the furnace reaches a set value (about 25 Kpa) in the heating process, opening a first oxidation valve 71 for pressure relief treatment, and allowing the decompressed ultrahigh-concentration gas to enter an oxidizer 9 through the first oxidation valve 71 for oxidation and be discharged after reaching the standard; when the pressure relief of the furnace pressure reaches a set value (about 5 Kpa), the first oxidation valve 71 is closed, the nitrogen valve 33 is opened, nitrogen is supplemented properly until the pressure is higher than the set value (about 10 Kpa), the micro positive pressure in the system is kept all the time, the circulation is repeated, and the heater 2 is closed until the temperature of the activated carbon layer is raised to the set temperature (about 300 ℃). The heat cycle fan 8 is turned off. The vacuum heat radiation furnace 1 continues to keep heating.
Continuously heating the saturated activated carbon under a heat radiation heating device of the vacuum heat radiation furnace 1, and continuously and gradually increasing the temperature and the pressure in the furnace; when the pressure in the furnace reaches a set value (about 25 Kpa) in the heating process, opening a first oxidation valve 71 for pressure relief treatment, and allowing the decompressed ultrahigh-concentration gas to enter an oxidizer 9 through the first oxidation valve 71 for oxidation and be discharged after reaching the standard; when the pressure in the furnace is decompressed to reach a set value (about 5 Kpa), the first oxidation valve 71 is closed, the nitrogen valve 33 is opened, nitrogen is supplemented properly until the pressure is higher than the set value (about 10 Kpa), micro positive pressure is kept in the system all the time, and the circulation is repeated until the temperature of the activated carbon layer is raised to the set temperature (more than 500 ℃). The desorption is completed.
The micro-positive pressure in the system is always kept in the whole temperature rising process, so that the desorption process is safely and efficiently carried out.
2. Cooling activated carbon: and after desorption and desorption are finished, the activated carbon needs to be cooled to room temperature, the activated carbon is moved out for next adsorption so as to be convenient for recycling, and the activated carbon cooling has two modes, namely natural cooling along with the vacuum furnace and quick cooling.
2.1 natural cooling along with the vacuum furnace: after desorption, the nitrogen valve 33 is closed, the heater 2 is closed, the heat radiation heating device of the vacuum heat radiation furnace 1 is closed, and the heat circulation fan 8 is closed. And naturally cooling. When the pressure in the system is greater than a set value (about 25 Kpa) in the cooling process, opening a first oxidation valve 71 for pressure relief treatment, and discharging the decompressed gas after reaching the standard through an oxidizer 9; when the pressure relief in the system is lower than a set value (about 5 Kpa), the first oxidation valve 71 is closed. The nitrogen valve 33 is opened, and nitrogen gas is appropriately supplied until the pressure becomes higher than the set value (about 10 Kpa). The above steps are repeated in a circulating way until the temperature of the activated carbon is reduced to the room temperature. The micro-positive pressure is always kept in the system in the whole cooling process, so that the cooling process is safely and efficiently carried out.
2.2, rapid cooling: closing the heater 2, closing the heat radiation heating device of the vacuum heat radiation furnace 1, opening the nitrogen gas valve 33 to enable the pressure in the vacuum heat radiation furnace 1 to reach a set value (about 10 Kpa), then closing the nitrogen gas valve 33, starting the condenser 52, cooling the gas under the action of the condenser 52 under the action of the heat circulating fan 8, circulating the cooled gas in a closed system formed by the vacuum heat radiation furnace 1, the heater 2 and the condenser 52, and continuously cooling the activated carbon to gradually reduce the temperature of the activated carbon in the furnace; when the pressure in the system is greater than a set value (about 25 Kpa) in the cooling process, opening a first oxidation valve 71 for pressure relief treatment, and discharging the decompressed gas after reaching the standard through an oxidizer 9; when the pressure relief of the pressure in the system is lower than a set value (about 5 Kpa), closing the first oxidation valve 71, opening the nitrogen valve 33, appropriately supplementing nitrogen until the pressure is higher than the set value (about 10 Kpa), and keeping the micro-positive pressure in the system all the time, so that the gas in the vacuum heat radiation furnace 1 is cooled to a specified temperature by the activated carbon after passing through the condenser 52 for a period of time; the residual water vapor molecules are taken away while the activated carbon layer is cooled, so that the optimal adsorption state of the activated carbon/activated carbon particles is ensured.
C, saturated activated carbon powder
1. Desorption and desorption: loading the used saturated activated carbon powder into a vacuum thermal radiation furnace 1, closing a furnace door, starting a vacuum pump 62, starting a vacuum valve 61, pumping gas out by the vacuum pump 62, and discharging the gas after reaching the standard through an oxidizer 9 by opening a second oxidation valve 63, wherein the process is to perform deoxidization treatment on the saturated activated carbon powder;
when the oxygen content in the furnace reaches the desorption requirement, namely the oxygen content is lower than 10%, closing the vacuum pump 62, the vacuum valve 61 and the second oxidation valve 63, opening the nitrogen valve 33, opening the air inlet valve 10 to enable the pressure in the furnace to reach a set value (about 10 Kpa), and then closing the nitrogen valve 33;
the heating device of the vacuum heat radiation furnace 1 is started. Continuously heating the saturated activated carbon powder under a heat radiation heating device of a vacuum heat radiation furnace 1, and continuously and gradually increasing the temperature and the pressure in the furnace; when the pressure in the furnace reaches a set value (about 25 Kpa) in the heating process, opening the exhaust valve 51, performing pressure relief treatment on the first oxidation valve 71, and allowing the decompressed ultrahigh-concentration gas to enter the oxidizer 9 through the exhaust valve 51 and the first oxidation valve 71 to be oxidized and be discharged after reaching the standard; when the pressure relief of the furnace reaches a set value (about 5 Kpa), closing the first oxidation valve 71 of the exhaust valve 51, keeping the micro positive pressure in the system all the time, and repeating the steps until the temperature of the activated carbon layer is raised to the set temperature (above 700 ℃).
When the temperature of the saturated activated carbon powder reaches the temperature (above 700 ℃), and the pressure in the furnace is decompressed to the set value (about 5 Kpa), the first oxidation valve 71 of the exhaust valve 51 is kept in an open state. Introducing steam for activation, starting the heater 2, opening the steam valve 35, continuously introducing the steam for activation, introducing the ultrahigh-concentration gas into the oxidizer 9 through the first oxidation valve 71 of the exhaust valve 51 for oxidation, and discharging the gas up to the standard; activation for a set time (about 4 hours).
The micro-positive pressure in the system is always kept in the whole temperature rising process, so that the desorption process is safely and efficiently carried out.
2. Cooling activated carbon powder: and after desorption and desorption are finished, cooling the activated carbon powder to room temperature, moving out for waiting for next adsorption for convenient recycling, and naturally cooling the activated carbon powder by using a vacuum furnace.
Naturally cooling along with a vacuum furnace: the steam valve 35 is closed, the heater 2 is closed, the heat radiation heating device of the vacuum heat radiation furnace 1 is closed, and natural cooling is performed. When the pressure in the system is greater than a set value (about 25 Kpa) in the cooling process, opening a first oxidation valve 71 for pressure relief treatment, and discharging the decompressed gas after reaching the standard through an oxidizer 9; when the pressure relief in the system is lower than a set value (about 5 Kpa), the first oxidation valve 71 is closed. The above steps are repeated in a circulating way until the temperature of the activated carbon powder is reduced to the room temperature. The micro-positive pressure is always kept in the system in the whole cooling process, so that the cooling process is safely and efficiently carried out.
The dried activated carbon powder is taken out of the furnace, and the used saturated activated carbon powder is loaded into a vacuum thermal radiation furnace 1 for the next desorption process.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a saturated active carbon high temperature anaerobic desorption regeneration system which characterized in that: the device comprises a vacuum thermal radiation furnace (1), a heater (2), a first air inlet pipeline (3), a second air inlet pipeline (4), an exhaust pipeline (5), an air extraction pipeline (6) and a pressure relief pipeline (7);
the air inlet of the vacuum thermal radiation furnace (1) is connected with the air outlet end of the second air inlet pipeline (4);
an exhaust port (13) of the vacuum heat radiation furnace (1) is connected with an air inlet end of the exhaust pipeline (5);
the air exhaust port (14) of the vacuum heat radiation furnace (1) is connected with the air inlet end of the air exhaust pipeline (6);
the air inlet end of the second air inlet pipeline (4) is connected with the outlet (22) of the heater (2);
an inlet (21) of the heater (2) is connected with an air outlet end of the first air inlet pipeline (3);
the air inlet end of the first air inlet pipeline (3) and the air outlet end of the exhaust pipeline (5) are both connected with a heat circulating fan (8);
the air inlet end of the first air inlet pipeline (3) is also connected with an air source pipeline;
the air outlet end of the exhaust pipeline (5) is also connected with the air inlet end of the pressure relief pipeline (7); a first oxidation valve (71) is arranged on the pressure relief pipeline (7);
and the air outlet end of the air suction pipeline (5) and the air outlet end of the pressure relief pipeline (7) are communicated with an oxidizer (9).
2. The saturated activated carbon high temperature oxygen-free desorption regeneration system of claim 1, wherein: the air inlet of the vacuum heat radiation furnace (1) comprises a first air inlet (11) and a second air inlet (12); the first air inlet (11) and the second air inlet (12) are connected with the air outlet end of the second air inlet pipeline (4) through pipelines, and an air inlet valve (10) is arranged on the pipelines.
3. The saturated activated carbon high temperature oxygen-free desorption regeneration system of claim 1, wherein: the gas source pipeline comprises a nitrogen source pipeline (31) and a steam source pipeline (32); a nitrogen valve (33) is arranged on the nitrogen source pipeline (31); the steam source pipeline (32) is provided with a steam generator (34) and a steam valve (35).
4. The saturated activated carbon high temperature oxygen-free desorption regeneration system of claim 1, wherein: the air extraction pipeline (6) is provided with a vacuum valve (61), a vacuum pump (62) and a second oxidation valve (63).
5. The saturated activated carbon high temperature oxygen-free desorption regeneration system of claim 1, wherein: and the exhaust pipeline (5) is provided with an exhaust valve (51) and a condenser (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210445995.7A CN114669285A (en) | 2022-04-26 | 2022-04-26 | Saturated active carbon high temperature anaerobic desorption regeneration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210445995.7A CN114669285A (en) | 2022-04-26 | 2022-04-26 | Saturated active carbon high temperature anaerobic desorption regeneration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114669285A true CN114669285A (en) | 2022-06-28 |
Family
ID=82080942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210445995.7A Pending CN114669285A (en) | 2022-04-26 | 2022-04-26 | Saturated active carbon high temperature anaerobic desorption regeneration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114669285A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116328747A (en) * | 2023-03-27 | 2023-06-27 | 无锡市友信赢特环境工程有限公司 | Active carbon thermal cycle regeneration system and process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5230872A (en) * | 1991-08-26 | 1993-07-27 | Tigg Corporation | Method and apparatus for regenerating activated carbon containing an adsorbed volatile organic absorbate |
| 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 |
| CN111889088A (en) * | 2020-04-26 | 2020-11-06 | 无锡四方集团有限公司 | Desorption regeneration activation process and system for adsorbent |
| KR20210113730A (en) * | 2020-03-09 | 2021-09-17 | 주식회사 멘도타 | Manufacturing apparatus of high quality activated carbon and method for manufacturing same |
| CN217341408U (en) * | 2022-04-26 | 2022-09-02 | 无锡市赢江环保科技有限公司 | Saturated active carbon high temperature anaerobic desorption regeneration system |
-
2022
- 2022-04-26 CN CN202210445995.7A patent/CN114669285A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5230872A (en) * | 1991-08-26 | 1993-07-27 | Tigg Corporation | Method and apparatus for regenerating activated carbon containing an adsorbed volatile organic absorbate |
| 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 |
| KR20210113730A (en) * | 2020-03-09 | 2021-09-17 | 주식회사 멘도타 | Manufacturing apparatus of high quality activated carbon and method for manufacturing same |
| CN111889088A (en) * | 2020-04-26 | 2020-11-06 | 无锡四方集团有限公司 | Desorption regeneration activation process and system for adsorbent |
| CN217341408U (en) * | 2022-04-26 | 2022-09-02 | 无锡市赢江环保科技有限公司 | Saturated active carbon high temperature anaerobic desorption regeneration system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116328747A (en) * | 2023-03-27 | 2023-06-27 | 无锡市友信赢特环境工程有限公司 | Active carbon thermal cycle regeneration system and process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217341408U (en) | Saturated active carbon high temperature anaerobic desorption regeneration system | |
| CN107376590A (en) | A kind of organic exhaust gas adsorption desorption recovery process and device | |
| CN109985482B (en) | Volatile organic compound adsorption and in-situ desorption regeneration equipment and method | |
| CN201684613U (en) | Microwave activated carbon regenerating device | |
| CN102489113B (en) | Method for recovering organic solvent from organic waste gas | |
| CN212999203U (en) | Energy-efficient nitrogen desorption retrieves organic solvent device | |
| CN114669285A (en) | Saturated active carbon high temperature anaerobic desorption regeneration system | |
| CN103933826B (en) | A kind of processing method of cumyl peroxide process gas | |
| CN101543683B (en) | Method for reclaiming NMP in working procedure of coating lithium ion cell | |
| CN108435776B (en) | Device and method for drying kiln-entering soil by utilizing waste heat of soil after thermal desorption | |
| CN105944769A (en) | Method using microwave heating to treat waste mercuric chloride catalyst | |
| CN112058250A (en) | Method for carrier gas assisted microwave-vacuum combined regeneration of volatile organic compound-loaded adsorbent and device for method | |
| CN205295483U (en) | Water electrolysis hydrogen gas compression heat recovery system | |
| CN211753685U (en) | Efficient water vapor desorption and organic solvent recovery system | |
| CN205586995U (en) | Regeneration treatment device of active carbon | |
| CN217341409U (en) | Sulfur-containing saturated activated carbon desorption regeneration system | |
| CN204710061U (en) | A kind of energy-saving containing volatile organic matter industrial waste gas environment protection treating retracting device | |
| CN204388548U (en) | The gas-powered Analysis of Heat Pump Drying System in a kind of natural pond | |
| CN1290607C (en) | Method for eluting, regenerating and removing organics using active carbon microwave reinforced solvent | |
| CN212348748U (en) | Desorption regeneration activation system of adsorbent | |
| CN209952524U (en) | Equipment for volatile organic compound adsorption and in-situ desorption regeneration | |
| CN113175829A (en) | Carbon dioxide gas suction and separation device and method of mixed working medium circulation system | |
| CN114849678A (en) | Sulfur-containing saturated activated carbon desorption regeneration system | |
| CN214366595U (en) | Adsorption and dehumidification device for recycling waste heat of air compressor oil | |
| CN219308325U (en) | Organic waste gas recovery treatment and purification system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |