CN106378120A - Regeneration system and regeneration method of activated carbon - Google Patents
Regeneration system and regeneration method of activated carbon Download PDFInfo
- Publication number
- CN106378120A CN106378120A CN201610803600.0A CN201610803600A CN106378120A CN 106378120 A CN106378120 A CN 106378120A CN 201610803600 A CN201610803600 A CN 201610803600A CN 106378120 A CN106378120 A CN 106378120A
- Authority
- CN
- China
- Prior art keywords
- regeneration
- activated carbon
- drying
- combustion
- gas
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 335
- 238000011069 regeneration method Methods 0.000 title claims abstract description 199
- 230000008929 regeneration Effects 0.000 title claims abstract description 185
- 238000001035 drying Methods 0.000 claims abstract description 76
- 239000002699 waste material Substances 0.000 claims abstract description 68
- 238000011282 treatment Methods 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 230000001172 regenerating effect Effects 0.000 claims abstract description 12
- 230000003213 activating effect Effects 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 82
- 238000002485 combustion reaction Methods 0.000 claims description 69
- 230000004913 activation Effects 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 239000000446 fuel Substances 0.000 claims description 15
- 239000000428 dust Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 239000002283 diesel fuel Substances 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000001179 sorption measurement Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 238000003795 desorption Methods 0.000 description 10
- 238000004806 packaging method and process Methods 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention provides a regeneration system of activated carbon. The regeneration system comprises N (N being greater than or equal to 2) groups of regeneration equipment, wherein each group of regeneration equipment comprises a feeding structure, a drying structure, a regenerating structure, a cooling structure and a burning structure; the gas outlet end of the burning structure of the first group of regeneration equipment is communicated with a second temperature area of the regenerating structure of the N-th group of regeneration equipment, and the outlet end of the burning structure of the N-th group of regeneration equipment is communicated with a second temperature area of the regenerating structure of the (N-1)-th group of regeneration equipment; a part of gas sufficiently burnt in each burning structure is fed into the corresponding drying structure to carry out drying treatment on waste activated carbon, the other part of gas taken as activating gas is fed into another regenerating structure to carry out activated regeneration on the waste activated carbon in the corresponding regenerating structure, and the gas burnt in the burning structure is discharged by the regenerating structure in the corresponding group of regeneration equipment; in the regeneration system, tail gas treatment is not needed, gas in the regeneration system is constantly recycled, the energy consumption cost is reduced, and the problems of gas source shortage and tail gas treatment difficulty are solved.
Description
Technical Field
The invention relates to the field of activated carbon regeneration, in particular to an activated carbon regeneration system and an activated carbon regeneration method.
Background
The active carbon has a highly developed pore structure and a proper specific surface area, is nontoxic and tasteless, has strong adsorption capacity on organic substance colored molecules, is often used as an excellent adsorbent, and is widely applied to various fields of medicine, metallurgy, food, chemical industry, military, environmental protection and the like. In recent years, with the improvement of social environmental awareness, the demand of activated carbon in the aspect of environmental protection is increasing, and the activated carbon is widely applied to urban water supply purification, harmful gas adsorption, drinking water purification and industrial wastewater advanced treatment. However, because the price of the activated carbon is higher, the production resources are more and more in short supply, if the used waste activated carbon is disposed by burning, burying and the like, the resources are inevitably seriously wasted, meanwhile, certain influence is brought to the environment, and the application range of the activated carbon is greatly limited. Therefore, the regeneration of the waste activated carbon has a good development trend.
The regeneration of the activated carbon means that the carbon which loses activity after being adsorbed and saturated is treated by using methods such as physical, chemical or biochemical methods on the premise of not damaging the original structure of the activated carbon, so that the adsorption performance is recovered, and the aim of repeated use is fulfilled. There are various methods for regenerating activated carbon, for example: thermal regeneration, biological regeneration, wet oxidation, solvent regeneration, electrochemical regeneration, catalytic wet oxidation, and the like. Among them, the thermal regeneration method is the most industrially most mature method for regenerating activated carbon. In the regeneration process of the activated carbon, the activated carbon is generally divided into three stages of drying, high-temperature carbonization and activation according to the change of organic matters when the activated carbon is heated to different temperatures; in the drying stage, volatile components on the activated carbon are mainly removed; in the high-temperature carbonization stage, part of organic matters adsorbed on the activated carbon are boiled and vaporized for desorption, part of the organic matters are subjected to decomposition reaction to generate micromolecular hydrocarbon for desorption, and residual components are left in pores of the activated carbon to form 'fixed carbon', and in the stage, the temperature reaches 800-900 ℃, so that the oxidation of the activated carbon is avoided, and the high-temperature carbonization stage is generally carried out in a vacuum or inert atmosphere; in the next activation stage, CO2, CO, H2 or steam and other gases are introduced into the reaction kettle to clean the micropores of the activated carbon and restore the adsorption performance.
Chinese patent document CN105289563A discloses a method for regenerating waste activated carbon, which comprises the steps of storage, pretreatment, thermal preparation, roasting, post-treatment, packaging and tail gas treatment; but it has at least the following disadvantages: the flue gas generated in the cooling area at the tail part of the tunnel kiln can be discharged from a chimney after a series of treatments such as combustion, cooling, adsorption, dust removal, acid and alkali treatment and the like, and the tail gas treatment process is complex and increases the overall energy consumption cost.
In summary, it is desirable to provide an activated carbon regeneration system with simple tail gas treatment and low energy consumption and cost, and further provide an activated carbon regeneration method.
Disclosure of Invention
Therefore, the invention aims to solve the problems that the tail gas treatment process of the waste activated carbon regeneration process method in the prior art is complex and the overall energy consumption cost is increased; further provides an activated carbon regeneration system with simple tail gas treatment and low energy consumption cost, and further provides an activated carbon regeneration method.
To this end, the present invention provides an activated carbon regeneration system comprising N (N > = 2) sets of regeneration devices; wherein each group of regeneration equipment comprises
The feeding structure comprises a bin loaded with waste activated carbon and a transfer assembly for conveying the waste activated carbon;
the drying structure is communicated with the feeding structure and is used for drying the fed waste activated carbon;
the regeneration structure is communicated with the drying structure and is used for activating the fed waste activated carbon, the regeneration structure is provided with a first temperature zone which is arranged close to the feeding end and used for preheating and heating and a second temperature zone which is arranged close to the discharging end and used for activating and regenerating, and a combustion spray gun is arranged in the regeneration structure;
the cooling structure is arranged at the discharge end of the regeneration structure and used for cooling the regenerated activated carbon output after being regenerated by the regeneration structure; and
the combustion structure is arranged between the regeneration structure and the drying structure and is used for fully combusting the gas exhausted by the regeneration structure, the gas inlet end of the combustion structure is communicated with the gas outlet end of the regeneration structure, and the gas outlet end of the combustion structure is connected with the gas inlet end of the drying structure;
the gas outlet end of the combustion structure of the first group of regeneration equipment is communicated with the second temperature zone of the regeneration structure of the Nth group of regeneration equipment, and the outlet end of the combustion structure of the Nth group of regeneration equipment is communicated with the second temperature zone of the regeneration structure of the (N-1) th group of regeneration equipment.
The air outlet end of the combustion structure is provided with a three-way air pressure valve, a first interface of the three-way air pressure valve is communicated with the air outlet end of the combustion structure, a second interface of the three-way air pressure valve is communicated with the drying structure in the same group, and a third interface of the three-way air pressure valve is communicated with the regeneration structure in the other group.
The combustion structure is connected with the drying structure and the regeneration structure by adopting high-temperature resistant pipelines; preferably, the high-temperature-resistant pipeline is a corundum ceramic pipeline.
The regeneration structure is a rotary kiln, the kiln tail of the rotary kiln is provided with the first temperature area, the kiln head of the rotary kiln is provided with the second temperature area, and the kiln head is provided with the fuel spray gun.
The fuel in the combustion spray gun is natural gas, diesel oil or heavy oil.
The drying structure is a drying converter, and a dust removal device is also arranged at the discharge end of the drying converter; preferably, the dust removing device comprises a cyclone dust separator and a chimney.
An activated carbon regeneration method corresponding to the activated carbon regeneration system described above,
step one
Igniting the regeneration structure, burning fuel in the combustion spray gun, preheating the regeneration structure by heat generated after burning, and enabling the regeneration structure to enter the combustion structure for full combustion; part of the combusted gas enters a drying structure, and the other part of the combusted gas serving as activated gas enters a regeneration structure of another group of regeneration equipment;
step two
The waste activated carbon is sent into the drying structure through a feeding structure for drying treatment, and the waste activated carbon is sent into the regeneration structure after treatment;
step three
The waste activated carbon is firstly sent into a first temperature area of the regeneration structure, preheating treatment is carried out in the first temperature area, the waste activated carbon is sent into a second temperature area after the preset treatment is finished, activation treatment is carried out in the second temperature area, and the waste activated carbon is converted into regenerated activated carbon;
step four
And feeding the regenerated activated carbon into the cooling structure for cooling treatment, and feeding the regenerated activated carbon into a finished product room after the treatment is finished.
In the third step, the preheating temperature of the first temperature zone is 200-.
In the third step, the activation temperature of the second temperature zone is 900-; preferably, the pressure is 0.2 to 0.3 MPa.
In the second step, the feeding amount of the waste activated carbon is 50-100 t/h.
Compared with the prior art, the invention has the following advantages:
the activated carbon regeneration system provided by the invention comprises N groups of regeneration equipment, wherein the gas outlet end of a combustion structure in each group of regeneration equipment is not only communicated with a drying structure of the group, but also communicated with a regeneration structure of another group of regeneration equipment, namely, part of gas fully combusted in the combustion structure is sent into the drying structure to dry the waste activated carbon, the other part of the gas is sent into the regeneration structure of the other group as activated gas to activate and regenerate the waste activated carbon of the regeneration structure, and the gas combusted in the combustion structure is discharged from the regeneration structure of the group; that is, in the regeneration system, the tail gas treatment is not needed, and the gas in the regeneration system is continuously recycled, so that the energy consumption cost is reduced, and the problems of gas source and tail gas treatment are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of an activated carbon regeneration system according to the present invention;
description of reference numerals: 1-1-a storage bin; 2-1-belt; 3-1-drying structure; 4-1-cyclone dust separator; 5-1-chimney; 6-1-screw feeder; 7-1-regenerative structure; 8-1-a combustion lance; 9-1-cooling structure; 10-1-belt; 11-1-finished product room; 12-1-combustion configuration; 13-1-three-way air pressure valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be understood broadly, for example, as being either a locked connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1, the present embodiment provides an activated carbon regeneration system including N (N > = 2) groups of regeneration devices; wherein each group of regeneration equipment comprises
The feeding structure comprises a bin 1-1 loaded with waste activated carbon and a transfer assembly for conveying the waste activated carbon;
a drying structure 3-1, which is communicated with the feeding structure and is used for drying the fed waste activated carbon;
the regeneration structure 7-1 is communicated with the drying structure 3-1 and is used for activating the fed waste activated carbon, the regeneration structure 7-1 is provided with a first temperature zone which is arranged close to a feeding end and used for preheating and heating and a second temperature zone which is arranged close to a discharging end and used for activating and regenerating, and a combustion spray gun 8-1 is arranged in the regeneration structure 7-1;
the cooling structure 9-1 is arranged at the discharge end of the regeneration structure 7-1 and used for cooling regenerated activated carbon output after regeneration through the regeneration structure 7-1; and
the combustion structure 12-1 is arranged between the regeneration structure 7-1 and the drying structure 3-1 and is used for fully combusting the gas discharged by the regeneration structure 7-1, the gas inlet end of the combustion structure 12-1 is communicated with the gas outlet end of the regeneration structure 7-1, and the gas outlet end of the combustion structure 12-1 is connected with the gas inlet end of the drying structure 3-1;
wherein the gas outlet end of the combustion structure 12-1 of the first group of regeneration equipment is communicated with the second temperature zone of the regeneration structure 7-1 of the Nth group of regeneration equipment, and the outlet end of the combustion structure 12-1 of the Nth group of regeneration equipment is communicated with the second temperature zone of the regeneration structure 7-1 of the Nth group of regeneration equipment.
In this embodiment, the N groups of regeneration devices form a circulating structure, the gas outlet end of the combustion structure 12-1 of the previous group of regeneration devices is communicated with the second temperature zone of the regeneration structure 7-1 of the next group of regeneration devices, that is, the activation gas of the second temperature zone of the regeneration structure 7-1 of the next group of regeneration devices is provided by the combustion structure 12-1 of the previous group of regeneration devices, the gas combusted by the combustion structure 12-1 of the previous group of regeneration devices is the tail gas exhausted by the regeneration structure 7-1 of the reorganized regeneration devices, and the initial combustion gas is the gas generated after the fuel in the combustion lance 8-1 in the regeneration structure 7-1 is combusted; therefore, in the whole activated carbon regeneration system, the tail gas discharged from the regeneration structure 7-1 can be continuously recycled, specifically, as shown in fig. 1, the arrow direction is the gas circulation direction, so that the energy consumption cost is reduced, and the problems of gas source and tail gas treatment are solved
In the present embodiment, it is preferable to set N to 2, that is, as shown in fig. 1, the regeneration devices are set to two groups; wherein,preferably, the fuel in the combustion lance 8-1 is natural gas, diesel oil or heavy oil; thus, the products of combustion of the fuel in the combustion lance 8-1 are predominantly CO2Water vapour, and the tail gas discharged from the regeneration structure 7-1 is mainly CO and H2Organic gaseous products, etc., which are fully combusted by the combustion structure 12-1 to obtain CO2And the mixed activated gas of the water vapor is mainly sent into the regeneration structure 7-1 of the next group of regeneration equipment to activate the waste activated carbon, and the small part of the mixed activated gas is sent into the drying structure 3-1 of the group to activate the waste activated carbon therein.
Meanwhile, in the embodiment, the transmission component is preferably provided with a belt 2-1 and a screw feeder 6-1, namely, the waste activated carbon is conveyed and transmitted through the belt 2-1 or the screw feeder 6-1.
Specifically, the air outlet end of the combustion structure 12-1 of this embodiment is provided with a three-way air pressure valve 13-1, a first interface of the three-way air pressure valve 13-1 is communicated with the air outlet end of the combustion structure 12-1, a second interface is communicated with the drying structure 3-1 of the same group, and a third interface is communicated with the regeneration structure 7-1 of another group. During the use process, the air pressure flow is adjusted through the three-way air pressure valve 13-1.
On the basis of the embodiment, the combustion structure 12-1 is connected with the drying structure 3-1 and the regeneration structure 7-1 by high-temperature resistant pipelines; preferably, the high-temperature-resistant pipeline is a corundum ceramic pipeline; meanwhile, the regeneration structure 7-1 is a rotary kiln, the kiln tail of the rotary kiln is provided with the first temperature zone, the kiln head of the rotary kiln is provided with the second temperature zone, the kiln head is provided with the fuel spray gun, and the fuel in the combustion spray gun 8-1 is natural gas, diesel oil or heavy oil.
In this embodiment, the kiln head of the rotary kiln is a discharge end and an air inlet end, and the kiln tail of the rotary kiln is a feed end and an air outlet end; namely, the kiln tail of the rotary kiln is connected with the drying structure 3-1 and the combustion structure 12-1 of the group of regeneration equipment, and the kiln head of the rotary kiln is connected with the cooling structure 9-1 of the group of regeneration equipment and the combustion structure of the next group of regeneration equipment.
The drying structure 3-1 is set as a drying converter, and a dust removal device is also arranged at the discharge end of the drying converter; preferably, the dust removal device comprises a cyclone dust removal separator 4-1 and a chimney 5-1; in the drying process, some dust or other particles adsorbed by the waste activated carbon can float up or fly under the action of drying gas, so that the dust is separated by the cyclone dust separator 4-1 and finally discharged through the chimney 5-1, the purity of circulating gas is ensured, and the influence of other foreign matters on the activation regeneration efficiency or the result is prevented.
In the embodiment, a water cooling screw feeder 6-1 is arranged between the regeneration structure 7-1 and the cooling structure 9-1, the water cooling screw feeder 6-1 outputs the regenerated activated carbon from the regeneration structure 7-1 and sends the regenerated activated carbon into the cooling structure 9-1 for cooling, and after cooling, the cooling structure 9-1 sends the regenerated activated carbon to a finished product room 11-1 through a belt 10-1 for bagging and packaging.
Example 2
On the basis of example 1, the present example further provides an activated carbon regeneration method corresponding to the activated carbon regeneration system in example 1:
step one
The regeneration structure 7-1 is ignited, burning the fuel in the combustion lance 8-1, which after burning generates a lot of heat and CO2Water vapor mixture, and certain amount of CO and H2The generated heat heats the regeneration structure 7-1, namely the rotary kiln, and the burned gas products are further discharged from the combustion structure 12-1 to be fully combusted, so that CO is generated2A water vapour mixed activated gas, a small portion of which is discharged from said drying structure 3-1, i.e. the drying converter, of the group of regeneration devicesThe majority of the mixed activation gas is discharged out of the regeneration structure 7-1 of the next group of regeneration devices; in the first step, the pressure is preferably 0.2 to 0.25 MPa.
Step two
The waste activated carbon loaded in the bin 1-1 is sent into the drying converter for drying treatment through a feeding structure, namely a belt 2-1 or a screw feeder 6-1, wherein the specific drying time is 6-7 hours, the drying temperature is 120-150 ℃, and after the drying treatment is finished, the waste activated carbon is further sent into the regeneration structure 7-1; during feeding, the feeding amount of the waste activated carbon is 50 t/h;
step three
The waste activated carbon enters the rotary kiln with the regeneration structure 7-1, namely the kiln tail of the rotary kiln, preheating treatment is firstly carried out in the first temperature zone, the preheating time is 2-3 hours, the preheating temperature is 200-600 ℃, in the preset treatment stage, a part of organic matters adsorbed on the waste activated carbon are boiled and vaporized for desorption, and a part of organic matters are subjected to decomposition reaction to generate micromolecular hydrocarbon for desorption; after the preheating treatment is finished, the waste activated carbon enters the second temperature zone for activation and regeneration, the activation and regeneration time is 2-2.5 hours, the activation and regeneration temperature is 900-2The water vapor mixed activated gas activates the waste activated carbon, active carbon micropores are cleaned, the activated carbon is expanded, adsorbed macromolecular organic matters are desorbed, the adsorption performance of the adsorbed macromolecular organic matters is recovered, and the waste activated carbon is converted into regenerated activated carbon;
step four
The regenerated activated carbon is input from the rotary kiln and is sent into the cooling structure 9-1 for cooling treatment, and after cooling is finished, the regenerated activated carbon is further sent into a finished product room 11-1 for subsequent bagging and packaging;
the tail gas in the rotary kiln mainly comprises CO, H2 and organic gas products, is discharged from the kiln tail of the rotary kiln, enters the combustion structure 12-1 for full combustion, and is converted into CO2Mixing the activated gas with water vapor;
the quality of the regenerated activated carbon product produced by the embodiment can basically meet the regeneration requirement, and the performance detection result shows that the adsorption performance of the regenerated activated carbon product reaches the standard and can reach about 95% of that of the original activated carbon, but the energy consumption is low, the carbon loss is about 10%, and when the quality requirement is not high, the production process can be adopted.
Example 3
On the basis of example 1, the present example further provides an activated carbon regeneration method corresponding to the activated carbon regeneration system in example 1:
step one
The regeneration structure 7-1 is ignited, burning the fuel in the combustion lance 8-1, which after burning generates a lot of heat and CO2Water vapor mixture, and certain amount of CO and H2The generated heat heats the regeneration structure 7-1, namely the rotary kiln, and the burned gas products are further discharged from the combustion structure 12-1 to be fully combusted, so that CO is generated2A small part of the mixed activated gas is discharged out of the drying structure 3-1 of the group of regeneration equipment, namely a drying converter, and a large part of the mixed activated gas is discharged out of the regeneration structure 7-1 of the next group of regeneration equipment; in the first step, the pressure is preferably 0.2 to 0.3 MPa.
Step two
The waste activated carbon loaded in the bin 1-1 is sent into the drying converter for drying treatment through a feeding structure, namely a belt 2-1 or a screw feeder 6-1, the specific drying time is 6-7 hours, and after the drying treatment is finished at the drying temperature of 120 ℃, the waste activated carbon is further sent into the regeneration structure 7-1; during feeding, the feeding amount of the waste activated carbon is 75 t/h;
step three
The waste activated carbon enters the rotary kiln with the regeneration structure 7-1, namely the kiln tail of the rotary kiln, preheating treatment is firstly carried out in the first temperature zone, the preheating time is 3-4 hours, the preheating temperature is 200-600 ℃, in the preset treatment stage, a part of organic matters adsorbed on the waste activated carbon are boiled and vaporized for desorption, and a part of organic matters are subjected to decomposition reaction to generate micromolecular hydrocarbon for desorption; after the preheating treatment is finished, the waste activated carbon enters the second temperature zone for activation and regeneration, the activation and regeneration time is 2.5-3 hours, the activation and regeneration temperature is 950-2The water vapor mixed activated gas activates the waste activated carbon, active carbon micropores are cleaned, the activated carbon is expanded, adsorbed macromolecular organic matters are desorbed, the adsorption performance of the adsorbed macromolecular organic matters is recovered, and the waste activated carbon is converted into regenerated activated carbon;
step four
The regenerated activated carbon is input from the rotary kiln and is sent into the cooling structure 9-1 for cooling treatment, and after cooling is finished, the regenerated activated carbon is further sent into a finished product room 11-1 for subsequent bagging and packaging;
the tail gas in the rotary kiln mainly comprises CO, H2 and organic gas products, is discharged from the kiln tail of the rotary kiln, enters the combustion structure 12-1 for full combustion, and is converted into CO2Mixing the activated gas with water vapor;
the quality of the regenerated active carbon product produced by the embodiment can basically meet the regeneration requirement, and the performance detection result shows that the adsorption performance of the regenerated active carbon product reaches the standard, reaches about 105 percent of the original active carbon, has about 15 percent of carbon loss and moderate energy consumption, and the production process can produce high-quality regenerated active carbon.
Example 4
On the basis of example 1, the present example further provides an activated carbon regeneration method corresponding to the activated carbon regeneration system in example 1:
step one
The regeneration structure 7-1 is ignited, burning the fuel in the combustion lance 8-1, which after burning generates a lot of heat and CO2Water vapor mixture, and certain amount of CO and H2The generated heat heats the regeneration structure 7-1, namely the rotary kiln, and the burned gas products are further discharged from the combustion structure 12-1 to be fully combusted, so that CO is generated2A small part of the mixed activated gas is discharged out of the drying structure 3-1 of the group of regeneration equipment, namely a drying converter, and a large part of the mixed activated gas is discharged out of the regeneration structure 7-1 of the next group of regeneration equipment; in the first step, the pressure is preferably 0.2 to 0.3 MPa.
Step two
The waste activated carbon loaded in the bin 1-1 is sent into the drying converter for drying treatment through a feeding structure, namely a belt 2-1 or a screw feeder 6-1, the specific drying time is 6-7 hours, the drying temperature is 150 ℃, and after the drying treatment is finished, the waste activated carbon is further sent into the regeneration structure 7-1; during feeding, the feeding amount of the waste activated carbon is 75 t/h;
step three
The waste activated carbon enters the rotary kiln with the regeneration structure 7-1, namely the kiln tail of the rotary kiln, preheating treatment is firstly carried out in the first temperature zone, the preheating time is 4-5 hours, the preheating temperature is 200-600 ℃, in the preset treatment stage, a part of organic matters adsorbed on the waste activated carbon are boiled and vaporized for desorption, and a part of organic matters are subjected to decomposition reaction to generate micromolecular hydrocarbon for desorption; after the preheating treatment is finished, the waste activated carbon enters the second temperature zone for activation and regeneration, the activation and regeneration time is 2.5-3 hours, the activation and regeneration temperature is 1000-2The mixed activated gas of the water vapor activates the waste activated carbon, cleans the activated carbon micropores, expands the activated pores, and makes the adsorbed macromolecules haveDesorbing the organic matters to recover the adsorption performance of the organic matters, and converting the waste activated carbon into regenerated activated carbon;
step four
The regenerated activated carbon is input from the rotary kiln and is sent into the cooling structure 9-1 for cooling treatment, and after cooling is finished, the regenerated activated carbon is further sent into a finished product room 11-1 for subsequent bagging and packaging;
the tail gas in the rotary kiln mainly comprises CO, H2 and organic gas products, is discharged from the kiln tail of the rotary kiln, enters the combustion structure 12-1 for full combustion, and is converted into CO2Mixing the activated gas with water vapor;
the regenerated activated carbon produced by the embodiment has high quality, and the performance detection result shows that the adsorption performance of the regenerated activated carbon reaches the standard, and can reach about 110% of the original activated carbon, about 21% of the original activated carbon, large carbon loss and high energy consumption.
Example 5
On the basis of example 1, the present example further provides an activated carbon regeneration method corresponding to the activated carbon regeneration system in example 1:
step one
The regeneration structure 7-1 is ignited, burning the fuel in the combustion lance 8-1, which after burning generates a lot of heat and CO2Water vapor mixture, and certain amount of CO and H2The generated heat heats the regeneration structure 7-1, namely the rotary kiln, and the burned gas products are further discharged from the combustion structure 12-1 to be fully combusted, so that CO is generated2A small part of the mixed activated gas is discharged out of the drying structure 3-1 of the group of regeneration devices, i.e. the drying converter, and a large part of the mixed activated gas is discharged out of the drying structure of the next group of regeneration devicesRegeneration configuration 7-1; in the first step, the pressure is preferably 0.2 to 0.3 MPa.
Step two
The waste activated carbon loaded in the bin 1-1 is sent into the drying converter for drying treatment through a feeding structure, namely a belt 2-1 or a screw feeder 6-1, the drying temperature is 130 ℃ for 6-7 hours, and after the drying treatment is finished, the waste activated carbon is further sent into the regeneration structure 7-1; during feeding, the feeding amount of the waste activated carbon is 100 t/h;
step three
The waste activated carbon enters the rotary kiln with the regeneration structure 7-1, namely the kiln tail of the rotary kiln, preheating treatment is firstly carried out in the first temperature zone, the preheating time is 3-4 hours, the preheating temperature is 200-600 ℃, in the preset treatment stage, a part of organic matters adsorbed on the waste activated carbon are boiled and vaporized for desorption, and a part of organic matters are subjected to decomposition reaction to generate micromolecular hydrocarbon for desorption; after the preheating treatment is finished, the waste activated carbon enters the second temperature zone for activation and regeneration, the activation and regeneration time is 2.5-3 hours, the activation and regeneration temperature is 1000-2The water vapor mixed activated gas activates the waste activated carbon, active carbon micropores are cleaned, the activated carbon is expanded, adsorbed macromolecular organic matters are desorbed, the adsorption performance of the adsorbed macromolecular organic matters is recovered, and the waste activated carbon is converted into regenerated activated carbon;
step four
The regenerated activated carbon is input from the rotary kiln and is sent into the cooling structure 9-1 for cooling treatment, and after cooling is finished, the regenerated activated carbon is further sent into a finished product room 11-1 for subsequent bagging and packaging;
the tail gas in the rotary kiln mainly comprises CO, H2 and organic gas products, is discharged from the kiln tail of the rotary kiln, enters the combustion structure 12-1 for full combustion, and is converted into CO2Mixing the activated gas with water vapor;
the quality of the regenerated activated carbon product produced by the embodiment is high, and the performance detection result shows that the adsorption performance of the regenerated activated carbon reaches the standard, the adsorption performance of the regenerated activated carbon reaches about 108% of that of the original activated carbon, the carbon loss of the regenerated activated carbon reaches about 17%, the energy consumption of the regenerated activated carbon is moderate, and the production process can be adopted when the activated carbon is regenerated in large batches.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. Active carbon regeneration system, its characterized in that: it comprises N (N > = 2) sets of regeneration devices; wherein each group of regeneration equipment comprises
A feeding structure comprising a silo (1-1) loaded with waste activated carbon and a transfer assembly for transferring the waste activated carbon;
the drying structure (3-1) is communicated with the feeding structure and is used for drying the fed waste activated carbon;
the regeneration structure (7-1) is communicated with the drying structure (3-1) and is used for activating the fed waste activated carbon, the regeneration structure (7-1) is provided with a first temperature zone which is arranged close to a feeding end and used for preheating and heating and a second temperature zone which is arranged close to a discharging end and used for activating and regenerating, and a combustion spray gun (8-1) is arranged in the regeneration structure (7-1);
the cooling structure (9-1) is arranged at the discharge end of the regeneration structure (7-1) and used for cooling the regenerated activated carbon output after being regenerated by the regeneration structure (7-1); and
the combustion structure (12-1) is arranged between the regeneration structure (7-1) and the drying structure (3-1) and is used for fully combusting the gas exhausted by the regeneration structure (7-1), the gas inlet end of the combustion structure (12-1) is communicated with the gas outlet end of the regeneration structure (7-1), and the gas outlet end of the combustion structure (12-1) is connected with the gas inlet end of the drying structure (3-1);
wherein the gas outlet end of the combustion structure (12-1) of the first group of regeneration equipment is communicated with the second temperature zone of the regeneration structure (7-1) of the Nth group of regeneration equipment, and the outlet end of the combustion structure (12-1) of the Nth group of regeneration equipment is communicated with the second temperature zone of the regeneration structure (7-1) of the Nth group of regeneration equipment.
2. The activated carbon regeneration system of claim 1, wherein: the air outlet end of the combustion structure (12-1) is provided with a three-way air pressure valve (13-1), a first interface of the three-way air pressure valve (13-1) is communicated with the air outlet end of the combustion structure (12-1), a second interface is communicated with the drying structure (3-1) in the same group, and a third interface is communicated with the regeneration structure (7-1) in the other group.
3. The activated carbon regeneration system of claim 1, wherein: the combustion structure (12-1), the drying structure (3-1) and the regeneration structure (7-1) are connected by adopting a high-temperature-resistant pipeline; preferably, the high-temperature-resistant pipeline is a corundum ceramic pipeline.
4. The activated carbon regeneration system of claim 1, wherein: the regeneration structure (7-1) is a rotary kiln, the kiln tail of the rotary kiln is provided with the first temperature area, the kiln head of the rotary kiln is provided with the second temperature area, and the kiln head is provided with the fuel spray gun.
5. The activated carbon regeneration system of claim 1, wherein: the fuel in the combustion spray gun (8-1) is natural gas, diesel oil or heavy oil.
6. The activated carbon regeneration system of claim 1, wherein: the drying structure (3-1) is a drying converter, and a dust removal device is also arranged at the discharge end of the drying converter; preferably, the dust removing device comprises a cyclone dust separator (4-1) and a chimney (5-1).
7. The activated carbon regeneration method is characterized by comprising the following steps:
step one
The regeneration structure (7-1) is ignited, fuel in the combustion spray gun (8-1) is combusted, and heat generated after combustion preheats the regeneration structure (7-1) and enters the combustion structure (12-1) for full combustion; part of the burned gas enters a drying structure, and the other part of the burned gas serving as activated gas enters a regeneration structure (7-1) of another group of regeneration equipment;
step two
The waste activated carbon is sent into the drying structure through a feeding structure for drying treatment, and the waste activated carbon is sent into the regeneration structure (7-1) after treatment;
step three
The waste activated carbon is firstly sent into a first temperature area of the regeneration structure (7-1), preheating treatment is carried out in the first temperature area, the waste activated carbon is sent into a second temperature area after the preset treatment is finished, activation treatment is carried out in the second temperature area, and the waste activated carbon is converted into regenerated activated carbon;
step four
And (3) feeding the regenerated activated carbon into the cooling structure (9-1) for cooling treatment, and feeding the regenerated activated carbon into a finished product room (11-1) after the treatment is finished.
8. The activated carbon regeneration method according to claim 7, characterized in that: in the third step, the preheating temperature of the first temperature zone is 200-.
9. The activated carbon regeneration method according to claim 7, characterized in that: in the third step, the activation temperature of the second temperature zone is 900-; preferably, the pressure is 0.2 to 0.3 MPa.
10. The activated carbon regeneration method according to claim 7, characterized in that: in the second step, the feeding amount of the waste activated carbon is 50-100 t/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803600.0A CN106378120B (en) | 2016-09-06 | 2016-09-06 | Regenerating active carbon system and regeneration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803600.0A CN106378120B (en) | 2016-09-06 | 2016-09-06 | Regenerating active carbon system and regeneration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106378120A true CN106378120A (en) | 2017-02-08 |
| CN106378120B CN106378120B (en) | 2019-07-02 |
Family
ID=57939535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610803600.0A Active CN106378120B (en) | 2016-09-06 | 2016-09-06 | Regenerating active carbon system and regeneration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106378120B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824171A (en) * | 2017-12-07 | 2018-03-23 | 衢州市蓝天环保节能设备厂 | The regenerative system and renovation process of activated carbon |
| CN108126680A (en) * | 2017-12-14 | 2018-06-08 | 南平元力活性炭有限公司 | A kind of powdery Regenevating Waste Activated Carbon System and method for of high-efficient energy-saving environment friendly |
| CN111135793A (en) * | 2020-01-07 | 2020-05-12 | 江苏竹海活性炭有限公司 | Renewable efficient deep desulfurization activated carbon and preparation method and application thereof |
| CN115318263A (en) * | 2022-06-24 | 2022-11-11 | 武汉龙净环保工程有限公司 | Optimized waste activated carbon collaborative pyrolysis regeneration treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230786A (en) * | 2013-05-07 | 2013-08-07 | 南京工业大学 | Activated carbon regeneration adsorption device and process thereof |
| CN105170127A (en) * | 2015-09-30 | 2015-12-23 | 黎城蓝天燃气开发有限公司 | In-place regenerating activating furnace, system and method for saturated active carbon |
| CN105289563A (en) * | 2015-12-02 | 2016-02-03 | 江苏嘉和炭业科技有限公司 | Spent activated carbon regeneration method |
-
2016
- 2016-09-06 CN CN201610803600.0A patent/CN106378120B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230786A (en) * | 2013-05-07 | 2013-08-07 | 南京工业大学 | Activated carbon regeneration adsorption device and process thereof |
| CN105170127A (en) * | 2015-09-30 | 2015-12-23 | 黎城蓝天燃气开发有限公司 | In-place regenerating activating furnace, system and method for saturated active carbon |
| CN105289563A (en) * | 2015-12-02 | 2016-02-03 | 江苏嘉和炭业科技有限公司 | Spent activated carbon regeneration method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824171A (en) * | 2017-12-07 | 2018-03-23 | 衢州市蓝天环保节能设备厂 | The regenerative system and renovation process of activated carbon |
| CN108126680A (en) * | 2017-12-14 | 2018-06-08 | 南平元力活性炭有限公司 | A kind of powdery Regenevating Waste Activated Carbon System and method for of high-efficient energy-saving environment friendly |
| CN111135793A (en) * | 2020-01-07 | 2020-05-12 | 江苏竹海活性炭有限公司 | Renewable efficient deep desulfurization activated carbon and preparation method and application thereof |
| CN115318263A (en) * | 2022-06-24 | 2022-11-11 | 武汉龙净环保工程有限公司 | Optimized waste activated carbon collaborative pyrolysis regeneration treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106378120B (en) | 2019-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104001488B (en) | A kind of activated carbon regeneration device and regeneration method | |
| CN106378120A (en) | Regeneration system and regeneration method of activated carbon | |
| CN105371286A (en) | Preheat type catalytic combustion system for purifying volatile organic waste gas | |
| CN105664857A (en) | Clean, environment-friendly and efficient activated carbon regeneration device | |
| CN105964141B (en) | A kind of processing method and system for spraying VOCs mixed gas | |
| CN102297431A (en) | Method and device for decoupling and burning solid waste with high water content | |
| CN111632584A (en) | Regeneration process of waste honeycomb activated carbon | |
| CN101352639B (en) | Organic waste gas treatment system | |
| CN208223209U (en) | A kind of regenerating active carbon kiln tail gas hazard-free processing system | |
| CN110981152A (en) | Multi-stage integrated device and method for drying, catalytic pyrolysis and oxidation of oily sludge | |
| CN206103639U (en) | Activated carbon regeneration system | |
| CN211645029U (en) | Oily sludge drying-catalytic pyrolysis-oxidation multi-section integrated device | |
| CN105240864A (en) | Catalytic combustion system and catalytic combustion method | |
| CN111228958A (en) | Activated carbon adsorption and desorption method and device | |
| CN113120906B (en) | Cement production carbon capture device and process for localized calcium cycle coupled with waste disposal | |
| CN115430259A (en) | Efficient and energy-saving waste gas purification system and method for circuit board oven | |
| CN113509920B (en) | A high temperature thermal regeneration activated carbon processing device | |
| CN111686706B (en) | Negative pressure closed type energy-saving activation and regeneration system for dangerous waste carbon | |
| CN203309915U (en) | Split type waste gas purification energy-saving environment-friendly furnace | |
| CN111023713A (en) | Solid drying method and system | |
| CN215311174U (en) | Contain organic volatile matter exhaust treatment device and sticky coating product drying device | |
| CN110369477A (en) | Soil pyrolysis treating method and equipment based on directly pyrolysis desorption | |
| CN212292814U (en) | Hazardous waste carbon energy-saving activation regeneration system suitable for multiple boiling furnaces | |
| CN106215691B (en) | chemical waste treatment device and treatment process | |
| CN216093709U (en) | Processing apparatus of high temperature thermal regeneration active carbon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 410000 room 9, No. three, section three, Furong Road three, Tianxin District, Changsha, Hunan. Applicant after: Hunan Xuan Rong Group Co., Ltd. Address before: 410000 Changsha, Hunan, Tianxin District, three section 380 three road, Huijin international 9 building, room 532 Applicant before: Hunan Futeng Technology Co., Ltd |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |