CN111185143A - Waste activated carbon regeneration process and equipment - Google Patents
Waste activated carbon regeneration process and equipment Download PDFInfo
- Publication number
- CN111185143A CN111185143A CN202010117577.6A CN202010117577A CN111185143A CN 111185143 A CN111185143 A CN 111185143A CN 202010117577 A CN202010117577 A CN 202010117577A CN 111185143 A CN111185143 A CN 111185143A
- Authority
- CN
- China
- Prior art keywords
- vocs
- activated carbon
- hot steam
- desorption
- equipment
- 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
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
- B01J20/3416—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)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Separation Of Gases By Adsorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste activated carbon regeneration process, which comprises the following process steps: s1: waste activated carbon is placed to ensure that the waste activated carbon is heated uniformly; s2: the microwave or variable frequency microwave and an external heating source heat the waste activated carbon, and organic matters are desorbed from the activated carbon under the interaction of oscillation and thermal kinetic energy to form VOCs hot steam; s3: transferring VOCs hot steam through gas driving equipment and entering a heat exchanger; s4: heat exchange, the heat exchanger reduces the high-temperature VOCs hot steam to room temperature; s5: low-temperature freezing: cooling the entering VOCs hot steam to about 0 ℃ by using a refrigerating machine, and condensing common organic matters into liquid; s6: and extremely small amount of VOCs steam leaks, and the VOCs can be treated by VOCs treatment equipment and then discharged after reaching the standard. The regeneration of the waste active carbon is completed, and the recovered organic liquid is comprehensively utilized.
Description
Technical Field
The invention relates to an activated carbon decontamination regeneration process, in particular to a waste activated carbon regeneration process and waste activated carbon regeneration equipment.
Background
The activated carbon adsorption purification technology is a mature chemical unit process, has the advantages of high adsorption efficiency, wide application range, convenient maintenance, capability of treating various mixed waste gases and the like, is widely applied to the treatment of various organic pollutants, and is a reliable and reliable preferred method for treating the low-concentration VOCs waste gases generated by the chemical industries such as coatings, adhesives and the like.
However, the activated carbon adsorption method has a serious problem in that after the activated carbon adsorption is saturated, new activated carbon must be replaced, and the waste activated carbon is a hazardous waste and must be recovered and disposed by qualified units, which results in high operation cost. The waste active carbon recovered by qualification unit is mainly treated by incineration method, the waste gas generated by incineration is treated by cloth bag dust removal, spray purification or active carbon adsorption method to remove the pollutants in the incineration waste gas, and the waste active carbon is discharged after reaching the standard.
At present, the existing regeneration equipment is to put the waste activated carbon into an oven, introduce hot air to volatilize the adsorbed VOCs, and convert the VOCs into water and carbon dioxide at about 300 ℃ by adopting a catalytic combustion method. The patent with application number 200920011186.5, high performance intermediate frequency activated carbon regeneration equipment, uses an intermediate frequency power supply for heating, and has large power consumption; the patent with application number 201220519647.1, namely a carbon regeneration treatment device with a built-in preheating layer, is heated by burning fuel oil, and has the problem that flue gas pollutes the environment; patent No. 201520931753.1 vertical regeneration furnace for waste activated carbon, which uses molasses as binder to make columnar particles to move from top to bottom in vertical activation tube, and requires shaping and granulating before regeneration, which is troublesome; patent application No. 201610708657.2 "a powdered activated carbon regenerator", it uses the gas as the heating energy, the useless wet charcoal raw materials of high water content directly adds the regenerating pipe, by the heating after steam and combustible volatile gas mix together concentrate and take out the regenerating pipe, collect and purify back reuse air exhauster through the spray column and send back the nozzle of regenerating furnace both sides to burn, the waste heat of high temperature regeneration tail gas has been lost, and also not enough even to the heating of regenerating pipe, the load of spray column is great simultaneously, the investment is high.
The horizontal continuous regeneration equipment for the powdery waste activated carbon is characterized in that waste carbon raw materials are dried in a drying pipe and then conveyed to a regeneration pipe by a screw to be heated and regenerated, and volatilized combustible gas escapes from the regeneration pipe to be combusted, so that comprehensive utilization of waste heat resources is realized.
The existing activated carbon regeneration equipment volatilizes VOCs by heating and then combusts or catalyzes and combusts, and the basic principles are the same; but all suffer from the same disadvantages: equipment is complicated, area is big, the operation is difficult, and the running cost is higher, and all do not consider the requirement of environmental protection, and is very much: places using activated carbon adsorption are all places strictly preventing fire. The method has the advantages of simple equipment, low-temperature operation, small occupied area, convenient operation, energy conservation, environmental protection, low operation cost and suitability for purchasing and using by small and medium-sized enterprises.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a waste activated carbon regeneration process and equipment, which can avoid the problem that safety accidents are easy to occur in open fire treatment.
In order to realize the aim of the invention, the invention provides a waste activated carbon regeneration process, which comprises the following process steps:
s1: placing the waste activated carbon, placing the waste activated carbon adsorbed with VOCs in a sealed desorption box, and placing the waste activated carbon in a layered or other mode;
s2: microwave or variable frequency microwave and an external heating source are used for heating, a microwave generator and the external heating source (such as an electric heating tube or high-temperature gas, heat conduction oil and the like) are arranged in the desorption box, organic matters adsorbed by the activated carbon absorb the microwave to generate oscillation, molecules collide with each other to generate heat, the temperature is raised, and the organic matters are desorbed from the activated carbon under the interaction of oscillation and thermal kinetic energy to form VOCs hot steam;
s3: transferring the hot steam, namely transferring the VOCs hot steam through gas driving equipment to enter a heat exchanger;
s4: heat exchange, the heat exchanger reduces the high-temperature VOCs hot steam to room temperature, and the high-boiling organic matter is mainly condensed into liquid;
s5: freezing at low temperature, cooling the entering VOCs hot steam to about 0 ℃ by a refrigerator, and condensing common organic matters into liquid;
s6: and tail gas treatment, wherein a very small amount of VOCs steam is leaked, and the VOCs can be treated by VOCs treatment equipment and then discharged after reaching the standard.
In one embodiment, the desorption box is used for loading the waste activated carbon in the step S1, is completely sealed except for connecting a gas driving device after being closed, can only release but can not absorb organic gas, and is provided with an air replenishing valve for controlling the air pressure balance in the desorption box when the door is opened.
In one embodiment, in the step S2, the waste activated carbon in the desorption box is heated by using microwaves and an external heating source, the microwaves and the external heating source can only select one mode to treat the waste activated carbon, the frequency of the microwave generator can be changed, so as to adapt to the polarity of various organic molecules, the frequency is changed, the organic molecules can be desorbed under the action of vibration and heat, and the organic molecules which are completely nonpolar can also obtain the desorption power through the heat conduction of polar molecules, so as to achieve the optimal desorption effect.
In one embodiment, in the step S3, the hot vapor is transferred by using a gas-driven device, which is a device that causes a gas pressure difference through mechanical operation, including but not limited to an exhaust fan, a vacuum machine, and an air compressor; the end of the sealed desorption box can be made to form low pressure, and the end of the cooling pipe forms positive pressure.
In one embodiment, the steps S4 and S5 may be used as a cooling process in the steps S4 and S5, and the cooling process is repeated multiple times to cool the VOCs hot steam, so as to ensure that the hot steam is sufficiently cooled and condensed to form a liquid; the liquid formed in step S4 may be recovered and used.
In one embodiment, in the step S3, the temperature of the VOCs hot steam coming out of the closed desorption tank is high, and can reach 100 ℃ or higher, in the step S4, the heat exchange is performed on the VOCs hot steam to complete cooling, so as to reduce the freezing difficulty in the step S5, and the heat exchange medium may be air or other liquid such as water; to ensure the cooling effect, the cooling time may be extended or the VOCs hot steam travel distance may be extended in step S4.
In one embodiment, in the step S5, the VOCs vapor entering the step S5 is frozen by using a refrigerant, and the VOCs vapor is not in direct contact with the low-temperature refrigerant, and heat transfer is achieved through a metal coil. In one embodiment, a refrigerator or other cryogenic device may be used to condense the VOCs vapor in step S5.
In one embodiment, the small amount of the tail gas in step S6 may be treated by UV photocatalytic decomposition, plasma purification, activated carbon adsorption, or catalytic combustion.
Equipment for the waste activated carbon regeneration process comprises but is not limited to a desorption box, gas driving equipment and condensing equipment; wherein:
the desorption box is used for placing the saturated and polluted activated carbon, and is provided with a variable-frequency microwave heating device;
the input end of the gas driving device is communicated with the desorption box and is used for transferring VOCs-containing hot steam released from the saturated sewage-containing activated carbon;
condensing equipment, including heat exchanger and the freezer with gaseous drive equipment output intercommunication, gaseous drive equipment is with the leading-in freezer of VOCs hot steam, and VOCs steam can be under pressure and low temperature condition, and the condensation becomes liquid, retrieves through the valve of heat exchanger and freezer.
Compared with the prior art, the implementation of the invention has the beneficial effects that:
the invention provides a process for safely and effectively regenerating saturated and polluted waste activated carbon under the condition of strictly prohibiting open fire. Can realize regeneration to useless active carbon, secondly realize recycle to the VOCs in the useless active carbon, to the not high problem of VOCs rate of recovery, carry out the secondary and cool down and prolong the condensation stroke, guaranteed the formation rate of condensate, have that the investment is little, area is little, process flow is simple, the cost of manufacture is low, purification efficiency is high, operation safe and reliable and environment-friendly's advantage.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention;
FIG. 2 is a schematic structural diagram of an apparatus for a waste activated carbon regeneration process according to the present invention;
fig. 3 is a front sectional view of the desorption tank.
In the figure, 10, a desorption box; 11. a loose-leaf door; 12. a microwave pulse heating device; 13. an air supply valve; 14. lattice layers; 15. an opening; 16. a frame case; 17. a sealing groove; 20. a vacuum pump is pumped; 21. a vacuum pipeline is pumped; 22. a heat sink; 30. a freezer; 31. a cold press; 32. a refrigeration pipeline; 33. a condenser tube; 34. a collection port.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1, a waste activated carbon regeneration process comprises the following process steps:
s1: placing the waste activated carbon, placing the waste activated carbon adsorbed with VOCs in a sealed desorption box, and placing the waste activated carbon in a layered or other mode; the waste activated carbon is placed mainly aiming at uniform heating of the waste activated carbon in the selection of the placing mode, the waste activated carbon is not stacked in the placing mode, and all surfaces of the waste activated carbon can be heated and subjected to microwave;
s2: microwave or variable frequency microwave and an external heating source are used for heating, a microwave generator is arranged in a desorption box, organic matters adsorbed by active carbon absorb the microwave to generate oscillation, molecules collide with each other to generate heat, the temperature is raised, and the organic matters are desorbed from the active carbon under the interaction of the oscillation and the thermal kinetic energy to form VOCs hot steam;
s3: transferring the hot steam, namely transferring the VOCs hot steam through gas driving equipment to enter a heat exchanger; during transfer, attention is paid to the sealing performance of the gas driving equipment, meanwhile, as VOCs hot steam has certain moisture and corrosiveness, the gas driving equipment should be made of waterproof and corrosion-resistant materials, and meanwhile, attention is paid to the transfer continuity in the transfer process, all the hot steam needs to be transferred, so that the situation that the VOCs hot steam is adsorbed by the waste activated carbon again after the desorption box returns to the normal temperature is avoided;
s4: heat exchange, the heat exchanger reduces the high-temperature VOCs hot steam to room temperature, and the high-boiling organic matter is mainly condensed into liquid;
s5: freezing at low temperature, cooling the entering VOCs hot steam to about 0 ℃ by a refrigerator, and condensing common organic matters into liquid;
s6: and tail gas treatment, wherein a very small amount of VOCs steam is leaked, and the VOCs can be treated by VOCs treatment equipment and then discharged after reaching the standard.
Through above-mentioned scheme, can realize the separation between VOCs hot steam and the useless active carbon, make useless active carbon regeneration, have multiple material that can drop into production again in the VOCs hot steam simultaneously, realize retrieving through the condensation, reach energy-concerving and environment-protective effect.
In step S1, the desorption tank is used to load waste activated carbon, and after being closed, except for being connected to a gas driving device, the desorption tank is completely sealed, so as to ensure that the desorption stage can be performed separately and hermetically, and the desorption tank is provided with an air compensation valve for controlling the air pressure balance in the desorption tank, and performing appropriate pressure relief and gas supplement.
In the step S2, the waste activated carbon in the desorption box is heated by microwaves, the microwave generator may be variable frequency to change frequency according to the polarity of various organic molecules, and desorb under the action of vibration and heat, and the completely nonpolar organic molecules may also obtain desorption power through an external heating source and the heat conduction of polar molecules, so as to achieve the best desorption effect.
In the step S3, the hot vapor is transferred by using a gas driving device, which is a device that causes a gas pressure difference through mechanical operation, including but not limited to an exhaust fan, a vacuum machine, and an air compressor; can make sealed desorption case end form low pressure, the cooling end forms the malleation, the transfer of smooth quick completion hot steam.
In the steps S4 and S5, the steps S4 and S5 may be used as a cooling process, that is, the steps S4 and S5 are regarded as a cooling stage, and the cooling stage is used to cool the VOCs hot steam repeatedly for multiple times to ensure that the hot steam is sufficiently cooled and condensed to form a liquid; the liquid formed in step S4 is also a substance that can be put into production again, and can be recycled, and the cooling equipment used in steps S4 and S5 is not limited to the equipment disclosed in this application, and some equipment capable of achieving cooling can be used to achieve the same purpose.
In the step S3, the temperature of the VOCs hot steam coming out of the closed desorption tank is high, and can reach above 100 ℃, and in the step S4, the heat exchange is performed on the VOCs hot steam to complete cooling, so that the freezing difficulty of the step S5 is reduced, and the heat exchange medium can be air or other liquid such as water; to ensure the cooling effect, the cooling time may be extended or the VOCs hot steam travel distance may be extended in step S4.
In the step S5, the refrigerant is used to freeze the VOCs vapor entering the step S5, and the VOCs vapor is not in direct contact with the low-temperature refrigerant, and heat conduction is achieved by the metal coil.
A chiller or other cryogenic equipment may be used to condense the VOCs vapors in step S5.
In the step S6, a small amount of tail gas may be treated by UV photocatalytic decomposition, plasma purification, activated carbon adsorption, and catalytic combustion.
Referring to fig. 2, an apparatus for a waste activated carbon regeneration process includes, but is not limited to, a desorption tank 10, a gas driving apparatus, and a condensing apparatus; wherein:
the desorption box 10 is used for placing the saturated and polluted activated carbon, and the desorption box 10 is provided with an external heating source and a microwave pulse heating device 12;
a gas-driven device having an input end in communication with the desorption tank 10 for extracting VOCs-containing hot vapors liberated from the saturated contaminated activated carbon; during transfer, attention is paid to the sealing performance of the gas driving equipment, meanwhile, as VOCs hot steam has certain moisture and corrosiveness, the gas driving equipment should be made of waterproof and corrosion-resistant materials, and meanwhile, attention is paid to the transfer continuity in the transfer process, all the hot steam needs to be transferred, so that the situation that the VOCs hot steam is adsorbed by the waste activated carbon again after the desorption box returns to the normal temperature is avoided;
the condensing equipment comprises a heat exchanger and a freezing box 30 which are communicated with the output end of the gas driving equipment, the gas driving equipment guides VOCs hot steam into a condensing pipe 33 in the freezing box 30, the freezing box 30 is communicated with the refrigerating equipment, and the VOCs hot steam entering the freezing box 30 is condensed into condensate under the conditions of pressure and low temperature and is recovered through a collecting port 34 of the freezing box 30.
Carry out external heating source and microwave heating to the contaminated active carbon of saturation in desorption case 10, because the required temperature of different material evaporation is different, in order to fully let in the active carbon VOCs form and more do benefit to the hot steam of being taken out from, consequently set up external heating source in desorption case 10 and heat, external heating source can but not only be limited to be the heating pipe, can also utilize external high temperature for example: high temperature steam, high temperature steam etc. heat the desorption incasement, let the active carbon can regenerate, through gas drive equipment with VOCs hot steam suction condensing equipment, under refrigeration plant refrigeration, reduce VOCs hot steam temperature and form the condensate and accomplish the recovery.
Referring to fig. 3, the desorption box 10 is provided with a flap door 11 for placing the saturated and polluted activated carbon into the desorption box 10 and for taking the activated carbon with the discharged VOCs out of the desorption box 10; in order to ensure the sealing performance of the desorption box 10, the loose-leaf door 11 of the desorption box 10 is installed on the square opening 15, the square frame shell 16 is externally connected around the opening 15, the size of the loose-leaf door is the same as that of the frame shell 16, a sealing groove 17 is formed in the frame, a rubber sealing strip is placed in the sealing groove 17, and the loose-leaf door is attached to the frame shell 16 to complete the sealing of the desorption box.
Be provided with display screen and electric control switch on desorption case 10, be convenient for constantly the operating condition and the operating duration in desorption case 10, a plurality of inductors electric connection in display screen and the desorption case 10, electric control switch then is connected with automatically controlled equipment electronics such as microwave pulse heating device and heating pipe in desorption case 10.
An alarm execution unit is also arranged in the desorption box 10 to carry out early warning and control on the temperature and the work in the desorption box 10.
The desorption box 10 is internally provided with a lattice layer 14 for placing activated carbon.
The activated carbon can be uniformly spread on the lattice layer 14 to ensure uniform heating.
The desorption box 10 is provided with an air compensating valve 13 for eliminating the pressure difference between the inside and the outside in the desorption process, and simultaneously, air is introduced to discharge residual hot steam after the desorption is finished.
The gas driving apparatus includes a vacuum pumping pump 20 and a vacuum pumping duct 21.
The vacuum-pumping pump 20 is installed in the middle of the vacuum-pumping pipeline 21, the input end of the vacuum-pumping pipeline 21 is communicated with the desorption box 10, and the output end of the vacuum-pumping pipeline 21 is communicated with the condensing equipment, so that VOCs hot steam transfer is realized.
In order to reduce refrigeration plant power consumption, connect the heat abstractor on the evacuation pipeline 21, the cooling device is fin 22, realizes once cooling to VOCs hot steam, still can choose other cooling devices such as fan in addition according to the radiating effect, or adopt multiple cooling device combination to cool down.
The heat sink 22 is installed at a joint of the vacuuming pipe 21, is integrally connected by a plurality of heat dissipating plates, and transfers part of heat energy to the surrounding air by continuing the stroke length of VOcs hot steam.
The condensing means further includes, but is not limited to, a compressor 31, the compressor 31 communicating with the freezer compartment 30 through a refrigerant conduit 32.
The compressor 31 communicates with one opening 15 of the freezer 30 through a refrigerant pipe 32, and directly sends a refrigerant to a condenser pipe 33 in the freezer 30 to perform heat exchange.
The condenser pipe 33 is a condensing coil pipe, is wound inside the freezing box 30, is in contact with VOcs steam entering the freezing box 30, condenses the VOcs steam by utilizing heat transfer, and the condensing coil pipe can prolong cooling time and cooling distance and ensure that condensate is generated.
A valve is mounted on the collection port 34. The condensate can be collected by opening the valve; and the tail gas which can not be collected enters a tail gas treatment box 35 communicated with the freezing box, and is neutralized by various catalytic modes and then discharged.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A waste activated carbon regeneration process is characterized by comprising the following process steps:
s1: placing the waste activated carbon, placing the waste activated carbon adsorbed with VOCs in a sealed desorption box, and placing the waste activated carbon in a layered or other mode;
s2: microwave or variable frequency microwave heating and an external heating source are arranged in the desorption box, a microwave generator is arranged in the desorption box, organic matters adsorbed by the active carbon absorb microwaves to generate oscillation, molecules collide with each other to generate heat, the temperature is raised, and under the interaction of oscillation and thermal kinetic energy, the organic matters are desorbed from the active carbon to form VOCs hot steam;
s3: transferring the hot steam, namely transferring the VOCs hot steam through gas driving equipment to enter a heat exchanger;
s4: heat exchange, the heat exchanger reduces the high-temperature VOCs hot steam to room temperature, and the high-boiling organic matter is mainly condensed into liquid;
s5: freezing at low temperature, cooling the entering VOCs hot steam to about 0 ℃ by a refrigerator, and condensing common organic matters into liquid;
s6: and tail gas treatment, wherein a very small amount of VOCs steam is leaked, and the VOCs can be treated by VOCs treatment equipment and then discharged after reaching the standard.
2. A process for regenerating spent activated carbon as claimed in claim 1, wherein: in step S1, the desorption tank is used to load the waste activated carbon, is completely sealed except for being connected with a gas driving device after being closed, and can only release but not absorb organic gas, and is provided with an aeration valve for controlling the air pressure balance in the desorption tank before opening the door.
3. A process for regenerating spent activated carbon as claimed in claim 1, wherein: in the step S2, the waste activated carbon in the desorption box is heated by the microwave and the external heating source, which can only select one mode to process the waste activated carbon, the microwave generator can be variable frequency to adapt to the polarity of various organic molecules to change the frequency, and the organic molecules which are completely nonpolar can obtain desorption power through the heat conduction of the polar molecules, so as to achieve the best desorption effect.
4. A process for regenerating spent activated carbon as claimed in claim 1, wherein: in the step S3, the hot vapor is transferred by using a gas driving device, which is a device that causes a gas pressure difference through mechanical operation, including but not limited to an exhaust fan, a vacuum machine, and an air compressor; the end of the sealed desorption box can be made to form low pressure, and the end of the cooling pipe forms positive pressure.
5. A process for regenerating spent activated carbon as claimed in claim 1, wherein: in the steps S4 and S5, the steps S4 and S5 may be used as a cooling process, and the cooling process is repeated multiple times to cool the VOCs hot steam, so as to ensure that the hot steam is sufficiently cooled and condensed to form a liquid; the liquid formed in step S4 may be recovered and used.
6. A process for regenerating spent activated carbon as claimed in claim 1, wherein: in the step S3, the temperature of the VOCs hot steam coming out of the closed desorption tank is high, and can reach above 100 ℃, and in the step S4, the heat exchange is performed on the VOCs hot steam to complete cooling, so that the freezing difficulty of the step S5 is reduced, and the heat exchange medium can be air or other liquid such as water; to ensure the cooling effect, the cooling time may be extended or the VOCs hot steam travel distance may be extended in step S4.
7. A process for regenerating spent activated carbon as claimed in claim 1, wherein: in the step S5, the refrigerant is used to freeze the VOCs vapor entering the step S5, and the VOCs vapor is not in direct contact with the low-temperature refrigerant, and heat conduction is achieved by the metal coil.
8. A process for regenerating spent activated carbon as claimed in claim 1, wherein: a chiller or other cryogenic equipment may be used to condense the VOCs vapors in step S5.
9. A process for regenerating spent activated carbon as claimed in claim 1, wherein: in the step S6, a small amount of tail gas may be treated by UV photocatalytic decomposition, plasma purification, activated carbon adsorption, and catalytic combustion.
10. An apparatus for use in a process for regenerating spent activated carbon as claimed in claim 1, wherein: including but not limited to desorption tanks, gas driven equipment and condensing equipment; wherein:
the desorption box is used for placing the saturated and polluted activated carbon, and is provided with a microwave and a heating device;
the input end of the gas driving device is communicated with the desorption box and is used for transferring VOCs-containing hot steam released from the saturated sewage-containing activated carbon;
condensing equipment, including heat exchanger and the freezer with gaseous drive equipment output intercommunication, gaseous drive equipment is with the leading-in freezer of VOCs hot steam, and VOCs steam can be under pressure and low temperature condition, and the condensation becomes liquid, collects through the collection mouth of heat exchanger and freezer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117577.6A CN111185143A (en) | 2020-02-25 | 2020-02-25 | Waste activated carbon regeneration process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117577.6A CN111185143A (en) | 2020-02-25 | 2020-02-25 | Waste activated carbon regeneration process and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111185143A true CN111185143A (en) | 2020-05-22 |
Family
ID=70687539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010117577.6A Pending CN111185143A (en) | 2020-02-25 | 2020-02-25 | Waste activated carbon regeneration process and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111185143A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152229A (en) * | 2021-03-25 | 2021-07-23 | 江为志 | Intelligent asphalt road water-cooling microwave maintenance vehicle and cooling control method |
| CN114225926A (en) * | 2021-11-26 | 2022-03-25 | 中国辐射防护研究院 | Microwave regeneration treatment system and method for granular waste activated carbon |
| CN115487793A (en) * | 2022-09-14 | 2022-12-20 | 四川发展环境科学技术研究院有限公司 | Active coke regenerating unit |
| CN115779879A (en) * | 2022-12-14 | 2023-03-14 | 南通斐腾新材料科技有限公司 | Zeolite rapid desorption organic waste gas recovery device and desorption recovery method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100636612B1 (en) * | 2005-07-18 | 2006-10-23 | 홍정호 | Using microwave dielectric heating, method and apparatus of activation for the carbonized materials or wasted activated carbon |
| CN102489113A (en) * | 2011-12-16 | 2012-06-13 | 上海同济科蓝环保设备工程有限公司 | Method for recovering organic solvent from organic water gas |
| CN202983689U (en) * | 2012-12-24 | 2013-06-12 | 上海克硫环保科技股份有限公司 | Mobile desorption and regeneration system of active coke |
| CN104941382A (en) * | 2015-06-11 | 2015-09-30 | 陆钢 | Organic waste gas treatment device and method |
| CN106413850A (en) * | 2016-01-11 | 2017-02-15 | 鹤山市新科达企业有限公司 | Device and method for adsorbing and recovery processing waste gas from synthetic leather factories by activated carbon |
| CN107694282A (en) * | 2017-11-23 | 2018-02-16 | 山东桑涂环境保护工程有限公司 | Utilize the technique and device of activated carbon processing organic exhaust gas |
| CN109331565A (en) * | 2018-11-05 | 2019-02-15 | 义乌市爱釜义自动化科技有限公司 | A kind of method of composite adsorption microwave recycling or pyrolysis processing organic exhaust gas |
| CN212549576U (en) * | 2020-02-25 | 2021-02-19 | 韶关市宏泰化工与环境工程研究所 | Useless active carbon regeneration facility |
-
2020
- 2020-02-25 CN CN202010117577.6A patent/CN111185143A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100636612B1 (en) * | 2005-07-18 | 2006-10-23 | 홍정호 | Using microwave dielectric heating, method and apparatus of activation for the carbonized materials or wasted activated carbon |
| CN102489113A (en) * | 2011-12-16 | 2012-06-13 | 上海同济科蓝环保设备工程有限公司 | Method for recovering organic solvent from organic water gas |
| CN202983689U (en) * | 2012-12-24 | 2013-06-12 | 上海克硫环保科技股份有限公司 | Mobile desorption and regeneration system of active coke |
| CN104941382A (en) * | 2015-06-11 | 2015-09-30 | 陆钢 | Organic waste gas treatment device and method |
| CN106413850A (en) * | 2016-01-11 | 2017-02-15 | 鹤山市新科达企业有限公司 | Device and method for adsorbing and recovery processing waste gas from synthetic leather factories by activated carbon |
| CN107694282A (en) * | 2017-11-23 | 2018-02-16 | 山东桑涂环境保护工程有限公司 | Utilize the technique and device of activated carbon processing organic exhaust gas |
| CN109331565A (en) * | 2018-11-05 | 2019-02-15 | 义乌市爱釜义自动化科技有限公司 | A kind of method of composite adsorption microwave recycling or pyrolysis processing organic exhaust gas |
| CN212549576U (en) * | 2020-02-25 | 2021-02-19 | 韶关市宏泰化工与环境工程研究所 | Useless active carbon regeneration facility |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152229A (en) * | 2021-03-25 | 2021-07-23 | 江为志 | Intelligent asphalt road water-cooling microwave maintenance vehicle and cooling control method |
| CN114225926A (en) * | 2021-11-26 | 2022-03-25 | 中国辐射防护研究院 | Microwave regeneration treatment system and method for granular waste activated carbon |
| CN115487793A (en) * | 2022-09-14 | 2022-12-20 | 四川发展环境科学技术研究院有限公司 | Active coke regenerating unit |
| CN115487793B (en) * | 2022-09-14 | 2023-08-04 | 四川发展环境科学技术研究院有限公司 | Active coke regenerating unit |
| CN115779879A (en) * | 2022-12-14 | 2023-03-14 | 南通斐腾新材料科技有限公司 | Zeolite rapid desorption organic waste gas recovery device and desorption recovery method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111185143A (en) | Waste activated carbon regeneration process and equipment | |
| CN212549576U (en) | Useless active carbon regeneration facility | |
| US20080041032A1 (en) | Method Of Treating Volatile Organic Compound And System For Treating Volatile Organic Compound Using Gas Turbine | |
| CN102489113B (en) | Method for recovering organic solvent from organic waste gas | |
| CN101301558A (en) | Activated carbon fiber organic solvent recovery novel technique using nitrogen as desorption medium | |
| CN207413083U (en) | Gas recovery system for oil | |
| CN108043064A (en) | A kind of VOCs recovery process and system | |
| CN101637686B (en) | Method for organic waste gas recovery by adopting secondary adsorption | |
| CN111482052A (en) | Module combined type VOC waste gas purification equipment and waste gas purification method | |
| CN109045926B (en) | VOCs-containing waste gas treatment device and method | |
| CN212119479U (en) | Zeolite runner adsorbs desorption catalytic combustion all-in-one | |
| CN111036040A (en) | Condensation-adsorption integrated VOCs recycling system and recycling process | |
| JP3280379B2 (en) | Pollution control equipment for industrial processes, etc. | |
| CN115089992B (en) | Shallow cooling adsorption and desorption VOCs gas recovery method | |
| CN216093709U (en) | Processing apparatus of high temperature thermal regeneration active carbon | |
| CN212262797U (en) | Low-energy-consumption activated carbon desorption regeneration and solvent recovery device | |
| CN211677002U (en) | Organic gas recovery device | |
| CN203429019U (en) | Wastewater purification system | |
| CN202538604U (en) | Device for recovering high-boiling-point organic gas | |
| CN218516407U (en) | Be applied to processing apparatus of water-soluble organic waste gas | |
| CN204987896U (en) | Steam -driven blower station waste heat of boiler flue gas utilizes system | |
| CN220715321U (en) | Discontinuous VOC waste gas treatment device | |
| CN213375549U (en) | Organic waste gas combustion treatment device | |
| CN215311269U (en) | Desorption activation energy-saving utilization device in adsorption recovery process | |
| CN211997138U (en) | Storage tank vapor recovery system handles environment-friendly device |
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 |