CN114436255A - Activated carbon activation method and device based on dynamic adjustment of mixed gas - Google Patents
Activated carbon activation method and device based on dynamic adjustment of mixed gas Download PDFInfo
- Publication number
- CN114436255A CN114436255A CN202210089116.1A CN202210089116A CN114436255A CN 114436255 A CN114436255 A CN 114436255A CN 202210089116 A CN202210089116 A CN 202210089116A CN 114436255 A CN114436255 A CN 114436255A
- Authority
- CN
- China
- Prior art keywords
- activated carbon
- mixed gas
- activation
- oxygen
- collecting box
- 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.)
- Withdrawn
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/39—Apparatus for the preparation thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses an activated carbon activation method and device based on mixed gas dynamic adjustment. The method comprises the following steps: and continuously introducing mixed gas comprising water vapor, carbon dioxide and oxygen into the activated carbon until the activated carbon is activated. The method uses the mixed gas of water vapor, carbon dioxide and trace oxygen to activate the regenerated activated carbon, adjusts the input ratio of oxygen according to the average diameter of activated carbon particles, the iodine adsorption value and the ash content ratio, and dynamically adjusts the input ratio of carbon dioxide according to the temperature change condition, so that different activated carbons can achieve high activation efficiency. When the temperature is lower, the reaction of the trace oxygen and the carbon can supplement a part of heat for water vapor activation, and the carbocoal on the surface of the activated carbon is reacted to accelerate the activation speed. In addition, the oxygen-containing functional groups on the surface of the activated carbon can be increased by the trace oxygen provided by the invention in the activation process, so that the hydrophilicity of the activated carbon and the adsorption effect on organic matters are improved.
Description
Technical Field
The invention belongs to the technical field of activated carbon preparation, and particularly relates to an activated carbon activation method based on mixed gas dynamic adjustment.
Background
In the electric heating regeneration experiment of the activated carbon, certain macromolecular organic matters are heated and cracked along with the increase of the temperature, and heavy products (semi-coke) are generated and deposited on the surface or around the pore channels of the activated carbon, so that the specific surface area is reduced or the pore volume is reduced. Activated gas can be used for dredging pore channels after regeneration is completed in the activated carbon regeneration process, the most commonly used activated gas is water vapor, but the activated gas has limitations, so that mixed gas needs to be introduced to improve the activation effect and speed of the activated carbon; however, the selection of the components of the mixed gas and the adjustment of the ratio of the components in the mixed gas are problems to be solved.
Disclosure of Invention
The invention aims to improve the activation effect of activated carbon and provides an activated carbon activation method based on mixed gas dynamic adjustment.
In a first aspect, the present invention provides an activated carbon activation method based on mixed gas dynamic adjustment, which comprises the following steps:
and continuously introducing mixed gas comprising water vapor, carbon dioxide and oxygen into the activated carbon until the activated carbon is activated.
The expression of the volume fraction m of oxygen in the mixed gas is as follows:
wherein a is represented by the average diameter of activated carbon; b is the ash content of the activated carbon; and c is the iodine adsorption value of the activated carbon before regeneration.
The expression of the volume fraction y of carbon dioxide in the mixed gas is as follows:
y＝0.0018x2-2.6256x+990.31
wherein x is represented as a temperature value of the activated carbon during the activation process.
Preferably, the aeration time of the mixed gas is 0.5 to 2 hours.
In a second aspect, the invention provides an activated carbon activation device based on mixed gas dynamic adjustment. Which comprises a material collecting box and a clapboard. The top of the material collecting box is provided with a feeding hole, and the bottom of the material collecting box is provided with a discharging hole. The plurality of partition plates are arranged in the material collecting box and are sequentially arranged in the vertical direction at intervals. Each clapboard is obliquely arranged; the inclination directions of two adjacent partition plates are opposite; a gap is reserved between the lowest part of the partition board and the inner side wall of the material collecting box. An activation chamber is formed between the uppermost partition plate and the top surface of the material collecting box, between two adjacent partition plates and between the lowermost partition plate and the bottom surface of the material collecting box.
Each activation chamber is correspondingly provided with an air inlet channel and a temperature sensor. The temperature sensors are used to correspond to the temperature of the granular activated carbon in the activation chamber. The gas inlet channel is used for inputting the mixed gas of carbon dioxide, water vapor and oxygen to the corresponding activation chamber. The device uses the activated carbon activation method to activate the activated carbon, and adjusts the ratio of each component in the mixed gas according to the method.
Preferably, the inlet channel and the temperature sensor corresponding to the same activation chamber are located on opposite sides of the internal cavity of the head box. The temperature sensor is close to the lowest part of the corresponding partition plate. The intake passage is located below the highest position of the corresponding partition plate. A plurality of air holes are formed in the partition plate; the mixed gas can enter the corresponding activation chamber by penetrating through the partition plate from bottom to top.
Preferably, the included angle between the partition plate and the horizontal plane is 35 degrees.
Preferably, the outer side of the material collecting box is wrapped with a heat insulating material.
The invention has the following beneficial effects:
1. the method uses the mixed gas of water vapor, carbon dioxide and trace oxygen to activate the regenerated activated carbon, adjusts the input proportion of oxygen according to the average diameter, iodine adsorption value and ash content proportion of activated carbon particles, and dynamically adjusts the input proportion of carbon dioxide according to the temperature change condition, so that different types of activated carbon can achieve high activation efficiency at different temperatures.
2. In the activation process of the mixed gas, because the water vapor has excellent activation effect on the activated carbon at a lower temperature (750-850 ℃), the water vapor is difficult to enter the activated carbon to activate the activated carbon at a higher temperature (850-900 ℃), so that the activation effect of the carbon dioxide on the inside of the activated carbon is better than that of the water vapor when the temperature is high; in addition, when the temperature is lower, the reaction of the trace oxygen and the carbon can supplement a part of heat for the activation of water vapor and carbon dioxide, and meanwhile, the trace oxygen can quickly react out semi-coke on the surface of the activated carbon to accelerate the activation speed.
3. The oxygen-containing functional groups on the surface of the activated carbon can be increased by the trace oxygen provided by the invention in the activation process, so that the hydrophilicity of the activated carbon and the adsorption effect on organic matters are improved.
Drawings
Fig. 1 is a schematic structural diagram of an activated carbon activation device based on mixed gas dynamic adjustment provided by the invention:
FIG. 2 is a graph showing the variation of the carbon dioxide ratio in the mixed gas introduced according to the present invention with the temperature.
Reference numbers in the figures: 1 is a feed inlet; 2 is an air inlet channel; 3 is a temperature sensor; 4 is a ventilating clapboard.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, an activated carbon activation method based on mixed gas dynamic adjustment is applied to an activated carbon activation device based on mixed gas dynamic adjustment. The activated carbon activation device based on mixed gas dynamic adjustment comprises a material collecting box and a ventilating partition plate. The top of the material collecting box is provided with a feeding hole 1, and the bottom is provided with a discharging hole. Each ventilative baffle all sets up in the case that gathers materials, and vertical direction interval sets gradually. Each ventilating partition plate is obliquely arranged; the included angle between the ventilating partition plate and the horizontal plane is 35 degrees. The inclination directions of two adjacent breathable partition plates are opposite; a gap is reserved between the lowest part of the ventilating partition plate and the inner side wall of the material collecting box, so that the activated carbon particles slide to the lower ventilating partition plate. An activation chamber is formed between the uppermost ventilating partition plate and the top surface of the material collecting box, between two adjacent ventilating partition plates and between the lowermost ventilating partition plate and the bottom surface of the material collecting box. The outer side of the material collecting box is wrapped with a heat insulating material.
Each activation chamber corresponds to one air inlet detection device. The intake air detecting means includes an intake passage 2 and a temperature sensor 3. The air inlet channel 2 and the temperature sensor 3 are respectively positioned on the opposite sides of the inner cavity of the material collecting box. The temperature sensor 3 is positioned above the lowest part of the corresponding air-permeable partition plate. The air inlet channel 2 is positioned below the highest position of the corresponding air-permeable partition plate. The temperature sensor 3 is used for detecting the temperature of the granular activated carbon when outputting the corresponding activation chamber; the inlet channel 2 is used to output a mixture of carbon dioxide, water vapour and oxygen, which passes upwards through the gas-permeable partition 4 into the corresponding activation chamber. Each intake passage 2 is connected to a mixed gas capable of outputting carbon dioxide, water vapor and oxygen, respectively, and is capable of dynamically adjusting the ratio of each component.
The activated carbon activation method based on mixed gas dynamic adjustment comprises the following steps:
step one, carrying out iodine adsorption value measurement, average diameter measurement and ash value measurement on activated carbon reaching the regeneration temperature after regeneration, then regenerating, and putting the regenerated activated carbon into an aggregate box.
And step two, the activated carbon enters the material collecting device from the feeding hole 1, is scattered on the breathable partition plate and slowly slides downwards to sequentially pass through each activation chamber.
And step three, detecting the temperature of the activated carbon output by the activation chambers in real time through temperature sensors corresponding to the activation chambers in the material collection box. Each air inlet channel 2 is filled with mixed gas of water vapor, carbon dioxide and oxygen.
The volume ratio of each component in the mixed gas is determined according to the iodine adsorption value, the average diameter and the ash value of the activated carbon particles measured before regeneration and the current temperature value.
The volume ratio of oxygen, carbon dioxide and water vapor in the mixed gas is m: y (1-m-y).
The expression of the volume fraction m of oxygen in the mixed gas is as follows:
wherein a is represented as an average diameter (mm) of activated carbon; b is ash content ratio (%) of activated carbon; and c is the iodine adsorption value (mg/g) of the activated carbon before regeneration (i.e. saturated activated carbon).
The expression of the volume fraction y of carbon dioxide in the mixed gas is as follows:
y＝0.0018x2-2.6256x+990.31
wherein x represents a temperature value of the activated carbon.
Under the action of the mixed gas with dynamically changed components, the activated carbon quickly and fully completes the activation process, and the retention time of the activated carbon in the aggregate box is 1 h.
The activation effect of the method provided by the invention was tested by using the pure water vapor activation without activation as two control groups, specifically as follows:
taking a certain coconut shell saturated granular activated carbon as an example, the average diameter of the granules before regeneration is 5.1mm, the ash content is 2.2 percent, and the iodine adsorption value of the saturated activated carbon is 624.2 mg/g; calculating to obtain the proportion coefficient m of oxygen to be 2.94%; under the condition of not activating, the iodine adsorption value of the activated carbon is recovered to 887.1 mg/g; in the control group activated with only water vapor, the iodine adsorption value of activated carbon was restored to 921.5 mg/g; when the oxygen is 2.94 percent, the carbon dioxide is constant at 40 percent, and the rest is water vapor, the iodine adsorption value of the activated carbon is recovered to 934.3 mg/g; after the activation by the method provided by the invention, the iodine adsorption value is recovered to 958.6mg/g under the action of mixed activated gas.
Taking a certain coal-based saturated granular activated carbon as an example, the average diameter of the granules before regeneration is 2.6mm, the ash content is 8.9 percent, and the iodine adsorption value of the saturated activated carbon is 335.7 mg/g; calculating to obtain the proportion coefficient m of oxygen to be 2.13%; the iodine adsorption value of the activated carbon was restored to 520.4mg/g without activation, and to 553.6mg/g in the control group activated with only water vapor; when the oxygen is 2.13 percent, the carbon dioxide is constant at 40 percent, and the rest is vapor, the iodine adsorption value of the activated carbon is recovered to 560.2mg/g, and after the activated carbon is activated by the method provided by the invention, the iodine adsorption value is recovered to 581.3mg/g under the action of the mixed activated gas.
The two groups of experiments show that the activation method provided by the invention can obviously improve the activation effect of the regenerated activated carbon.
Claims (6)
1. An activated carbon activation method based on mixed gas dynamic adjustment is characterized in that: continuously introducing mixed gas containing water vapor, carbon dioxide and oxygen into the activated carbon until the activated carbon is activated;
the expression of the volume fraction m of oxygen in the mixed gas is as follows:
wherein a is represented by the average diameter of activated carbon; b is the ash content of the activated carbon; c is the iodine adsorption value of the activated carbon before regeneration;
the expression of the volume fraction y of carbon dioxide in the mixed gas is as follows:
y＝0.0018x2-2.6256x+990.31
wherein x is represented as a temperature value of the activated carbon during the activation process.
2. The activated carbon activation method based on mixed gas dynamic adjustment according to claim 1, characterized in that: the ventilation time of the mixed gas is 0.5-2 h.
3. The utility model provides an active carbon activation device based on mist dynamic adjustment which characterized in that: comprises a material collecting box and a clapboard; the top of the material collecting box is provided with a feeding hole (1), and the bottom of the material collecting box is provided with a discharging hole; the plurality of partition plates are all arranged in the material collecting box and are sequentially arranged at intervals in the vertical direction; each clapboard is obliquely arranged; the inclination directions of two adjacent partition plates are opposite; a gap is reserved between the lowest part of the partition board and the inner side wall of the material collecting box; an activation chamber is formed between the uppermost partition plate and the top surface of the material collecting box, between two adjacent partition plates and between the lowermost partition plate and the bottom surface of the material collecting box;
each activation chamber is correspondingly provided with an air inlet channel (2) and a temperature sensor (3); the temperature sensor (3) is used for correspondingly activating the temperature of the granular activated carbon in the chamber; the gas inlet channel (2) is used for inputting mixed gas of carbon dioxide, water vapor and oxygen to the corresponding activation chamber; the expression of the volume fraction m of oxygen in the mixed gas is as follows:
wherein a is represented by the average diameter of activated carbon; b is the ash content of the activated carbon; c is the iodine adsorption value of the activated carbon before regeneration;
the expression of the volume fraction y of carbon dioxide in the mixed gas is as follows:
y＝0.0018x2-2.6256x+990.31
wherein x is represented as a temperature value of the activated carbon during the activation process.
4. The activated carbon activation device based on mixed gas dynamic adjustment of claim 1, wherein: the air inlet channel (2) and the temperature sensor (3) which correspond to the same activation chamber are respectively positioned on the opposite sides of the inner cavity of the material collecting box; the temperature sensor (3) is close to the lowest part of the corresponding partition plate; the air inlet channel (2) is positioned below the highest position of the corresponding partition plate; a plurality of air holes are formed in the partition plate; the mixed gas can enter the corresponding activation chamber by penetrating through the partition plate from bottom to top.
5. The activated carbon activation device based on mixed gas dynamic adjustment of claim 1, wherein: the included angle between the partition board and the horizontal plane is 35 degrees.
6. The activated carbon activation device based on mixed gas dynamic adjustment of claim 1, wherein: the outer side of the material collecting box is wrapped with a heat insulating material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089116.1A CN114436255A (en) | 2022-01-25 | 2022-01-25 | Activated carbon activation method and device based on dynamic adjustment of mixed gas |
| CN202210587158.8A CN114735695B (en) | 2022-01-25 | 2022-05-26 | Activated carbon activation method and device based on mixed gas dynamic adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210089116.1A CN114436255A (en) | 2022-01-25 | 2022-01-25 | Activated carbon activation method and device based on dynamic adjustment of mixed gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114436255A true CN114436255A (en) | 2022-05-06 |
Family
ID=81369400
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210089116.1A Withdrawn CN114436255A (en) | 2022-01-25 | 2022-01-25 | Activated carbon activation method and device based on dynamic adjustment of mixed gas |
| CN202210587158.8A Active CN114735695B (en) | 2022-01-25 | 2022-05-26 | Activated carbon activation method and device based on mixed gas dynamic adjustment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210587158.8A Active CN114735695B (en) | 2022-01-25 | 2022-05-26 | Activated carbon activation method and device based on mixed gas dynamic adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN114436255A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118320808A (en) * | 2024-04-17 | 2024-07-12 | 中冶长天国际工程有限责任公司 | Preparation method of carbon-based adsorption catalytic material |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4192962A (en) * | 1978-05-19 | 1980-03-11 | Kabushiki Kaisha Kyoritsu Yuki Kogyo Kenkyusho | Method and apparatus for regenerating used activated carbon |
| AU7033681A (en) * | 1981-04-10 | 1982-11-04 | Sasaki, Y. | Apparatus for regenerating activated carbon |
| CN108217649B (en) * | 2018-02-06 | 2019-10-22 | 新疆中宇金盾碳基研究院(有限公司) | A kind of coal activated carbon furnace preparing active carbon method |
| CN108314040A (en) * | 2018-02-09 | 2018-07-24 | 南京林业大学 | A kind of method of wood substance grain gasifying electricity generation co-producing active carbon |
| CN111099590A (en) * | 2019-06-05 | 2020-05-05 | 武汉科思瑞迪科技有限公司 | Coal-based activated carbon production process |
| CN110117011A (en) * | 2019-06-10 | 2019-08-13 | 新疆鑫力环保科技有限公司 | A kind of method that physical method prepares active carbon |
| CN211837938U (en) * | 2019-11-26 | 2020-11-03 | 江苏京颐环保科技有限公司 | Activated carbon activation and regeneration device |
| CN112569916B (en) * | 2020-11-13 | 2022-09-13 | 长沙工研院环保有限公司 | Method for regenerating waste active carbon |
-
2022
- 2022-01-25 CN CN202210089116.1A patent/CN114436255A/en not_active Withdrawn
- 2022-05-26 CN CN202210587158.8A patent/CN114735695B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114735695A (en) | 2022-07-12 |
| CN114735695B (en) | 2023-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114735695A (en) | Activated carbon activation method and device based on dynamic adjustment of mixed gas | |
| CN105219407A (en) | Dry distillation of coal device | |
| JP2021527030A (en) | Bioporous Carbon Dioxide Composition and Method for Producing and Using | |
| Zhang et al. | Influence of pore structure of granular activated carbon prepared from anthracite on the adsorption of CO2, CH4 and N2 | |
| CN109529534B (en) | Method and device for purifying organic silicon fractionation tail gas and recycling organic silicon monomers | |
| CN102728180A (en) | Oxygen supply system special for oxygen-rich fermentation of sludge | |
| CN104310393B (en) | The device of a kind of continuous prodution activated carbon and utilize the method that this device prepares activated carbon | |
| CN214735587U (en) | Active carbon integrated blast furnace gas fine desulfurization reactor | |
| CN103464104B (en) | Active carbon and preparing method thereof | |
| CN105062598A (en) | Method for landfill gas in-the-field and out-of-the-field combined treatment | |
| CN108949207A (en) | A kind of internal-combustion and-heating type biomass continuously carbonizing system and its production technology | |
| CN206108899U (en) | Low dew point pressure swing adsorption nitrogen device | |
| CN115430363A (en) | Carbon dioxide trapping method and carbonating furnace | |
| CN211284246U (en) | Straw carbonization tail gas combustion furnace | |
| CN202849223U (en) | Special oxygen supplying system for sludge oxygen enrichment fermentation | |
| CN114797784A (en) | System and method for preparing and recycling functional MOFs-based flue gas pollutant adsorbent by utilizing production environment of coal-fired power plant | |
| CN208865394U (en) | A kind of wall-flow type reactor | |
| CN112209755A (en) | Dynamic fermentation system and process for membrane treatment of waste gas | |
| CN103058184A (en) | Production process of activated carbon | |
| CN207071305U (en) | A kind of activated carbon adsorber | |
| CN206266225U (en) | Active carbon from coal carries out the device of oxygen charing with regenerative rotary hearth furnace in preparing | |
| EP2803656B1 (en) | Method and device for separating a gas mixture comprising carbon dioxide and methane | |
| CN2892829Y (en) | Normal temperature air separating oxygen-enriched-making generator | |
| CN218794948U (en) | Multistage parallel activated carbon adsorption box | |
| CN206841127U (en) | A kind of full automatic vehicle air purifier |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220506 |