CN108745327A - The regeneration method of granular activated carbon - Google Patents
The regeneration method of granular activated carbon Download PDFInfo
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- CN108745327A CN108745327A CN201810354131.8A CN201810354131A CN108745327A CN 108745327 A CN108745327 A CN 108745327A CN 201810354131 A CN201810354131 A CN 201810354131A CN 108745327 A CN108745327 A CN 108745327A
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- activated carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Invention is related to workpiece surface processing technology field, is related to a kind of regeneration method of granular activated carbon, refers in particular to a kind of regeneration method of granular activated carbon.Include the following steps；(a) it dries；(b) acid solution impregnates；(c) acid water is squeezed out；(d) it rinses：1. being rinsed to granular activated carbon after step (b) processing using light alkali solution; 2. pH value should be adjusted to 3 when being rinsed to granular activated carbon after step (2) processing using light alkali solution; then hydrogen peroxide is added to aoxidize the pollutant of seed activity carbon surface; 3. continuing to rinse to granular activated carbon after step (2) processing using light alkali solution, until pH value is adjusted to 6 to 7.The advantages of invention, is：Simple with method, regenerated liquid can recycle, and hydrogen peroxide is used in regenerative process almost all, does not generate any pollutant, expense is low, and energy consumption is small, easy to operate, regeneration oxidation hydrogen peroxide and organic matter reaction, ultimately form carbon dioxide and water, do not generate any pollution.
Description
Technical field
Invention is related to the regeneration method technical field of granular activated carbon, is related to a kind of regeneration method of granular activated carbon, especially
It refers to a kind of regeneration method of granular activated carbon.
Background technology
Activated carbon contains a large amount of micropores, has huge specific surface area, can be effectively removed coloration, stink, can remove water
Middle most organic pollutants and certain inorganic matters, are widely used in sewage disposal and advanced treatment of wastewater.Due to its adsorption saturation
After need to regenerate, regeneration needs special equipment, and because of equipment complexity, investment is big.It is difficult in using area in-place regeneration.Because of regeneration
Restriction, make the application of activated carbon by a certain range of limitation.
The several method of regenerating active carbon is as follows at present；1, hot recycling method：Hot recycling method is that current application is most, industry
On most ripe regeneration method of active carbon.It is generally divided into dry, high temperature carbonization and activation three phases.In drying stage, mainly
Remove the volatilizable ingredient on activated carbon.High temperature carbonization stage is the boiling of a part of organic matter, the vaporization for making to adsorb on activated carbon
Desorption, a part of organic matter are decomposed reaction, and generation small organic molecule is desorbed out, and residual components stay in activated carbon hole
It is interior to become " fixed carbon ".In this stage, temperature is up to 800~900 DEG C, to avoid the oxidation of activated carbon, is generally taking out very
It is carried out under empty or inert atmosphere.In next activation stage, the gases such as CO2, CO, H2 or vapor are passed through in reaction kettle,
To clear up activated carbon capillary, it is set to restore absorption property, activation stage is the key that entire regeneration technology.Although hot recycling method has
Regeneration efficiency is high, the characteristics of having a wide range of application, but in regenerative process, exist must external energy heating, investment and operating cost compared with
High defect.Moreover, the iron dirt deposited in activated carbon, calcium scale, the inorganic pollutions such as silicon dirt can not obtain clearly by this method
It removes, adsorption capacity declines after leading to regenerating active carbon.Hot recycling method causes activated carbon loss larger due to operation temperature height.And
And be generally required to activated carbon digging up carry out regenerated offline, labor intensity is very big.2, bio-regeneration method：Bio-regeneration
Method is to utilize the bacterium through taming, and parses the organic matter adsorbed on activated carbon, and further digestion resolves into H2O's and CO2
Process.Bio-regeneration method is similar with the bioanalysis in sewage disposal, also there is aerobic method and anaerobic process.Due to activated carbon sheet
The aperture very little of body, some only have several nanometers, and microorganism cannot enter such hole, it has been generally acknowledged that can be sent out in regenerative process
Raw aqtocytolysis phenomenon, i.e. cellular enzymes are flow to extracellular, and activated carbon has suction-operated to enzyme, therefore are formed in enzymatic in carbon surface
The heart reaches regenerated purpose to promote pollutant to decompose.Bioanalysis is simple and practicable, and investment and operating cost are relatively low, but exists
Required time is longer, by the far-reaching defect of water quality and temperature.Similarly, the iron deposited in bio-regeneration method activated carbon
Dirt, calcium scale, the inorganic pollutions such as silicon dirt, aluminium dirt can not be removed by this method, lead to adsorption energy after regenerating active carbon
Power declines.To activated carbon adsorbed to microorganism poisonous and harmful substance, or be difficult to biodegradable organic matter after absorption, biology
Method of reproduction inefficiency, marquis can be entirely ineffective when very much.3, wet air regeneration method：Under conditions of high temperature and pressure, oxygen is used
Or the oxidation operation adsorbed on activated carbon under liquid phase state is resolved into a kind of place of small molecule by air as oxidant
Reason method, referred to as wet air regeneration method.Testing the activated carbon optimal condition of protoplast isolation obtained is:230 DEG C of regeneration temperature, regeneration
Time 1h is oxygenated pO20.6MPa, adds charcoal amount 15g, amount of water 300mL.Regeneration efficiency reaches (45 ± 5) %, it was reported that through 5
Secondary circular regeneration, regeneration efficiency only decline 3%.The partial oxidation of activated carbon surface micropore is the main original that regeneration efficiency declines
Cause.Wet air regeneration method equipment investment is high, and operating cost is very big, and operational danger is high, on-site sanitation bad environments.Due to
Regeneration mainly use oxidation operation, to caused by inert inorganic matter the problems such as fouling it is substantially invalid, regeneration efficiency is low.4, solvent
Method of reproduction：Solvent regeneration process is using activated carbon, solvent and by the phase equilibrium relationship between adsorbate three, by changing temperature
The conditions such as the pH value of degree, solvent, break adsorption equilibrium, adsorbate are desorbed from activated carbon.Solvent regeneration process is relatively more suitable
For those reversible adsorptions, the absorption such as to high concentration, low boiling point organic wastewater.Its specific aim is stronger, often a kind of solvent
Certain pollutants can only be desorbed, and the pollutant kind in water treatment procedure is various, comes and go, accordingly, there exist a kind of specific
The relatively narrow defect of the application range of solvent.Solvent regeneration process is to activated carbon failure effect ten caused by some inorganic scalings, crystallization
Divide limited.The disposition of the high concentrated organic waste liquid generated in organic solvent regenerative process is also a great problem
Invention content
The purpose of invention be in view of the above-mentioned problems, provide gas reference material in a kind of nitrogen have good lack of homogeneity with
And preferable stability technique.
In order to achieve the above objectives, invention uses following technical proposal：1, the regeneration method of granular activated carbon, feature exist
In including the following steps；(a) it dries：Granular activated carbon is dried using steam or hot-air；(b) acid solution impregnates：
Granular activated carbon is impregnated using sulfuric acid；(c) acid water is squeezed out：Acid solution is squeezed out with compressed air method；(d) it rushes
It washes：1. being rinsed to granular activated carbon after step (b) processing using light alkali solution, 2. use light alkali solution to step (b) place
PH value should be adjusted to 3 when granular activated carbon rinses after reason, hydrogen peroxide is then added, the pollutant of seed activity carbon surface is carried out oxygen
Change, 3. uses light alkali solution to continue to rinse to granular activated carbon after step (b) processing, until pH value is adjusted to 6 to 7；The work
Property charcoal regenerative system device, including regenerating tank, dioxygen water inlet, sulfuric acid import, lye import, waste gas outlet, activated carbon import,
The upper end of activated carbon discharge port, steam pipe and detergent outlet, the regenerating tank is provided with dioxygen water inlet, and dioxygen water inlet
Right side be provided with sulfuric acid import, lye import is provided on the right side of the sulfuric acid import, and the right side opening of lye import is equipped with
Waste gas outlet is provided with activated carbon import on the right side of the waste gas outlet, and the activated carbon discharge port is arranged on the right side of regenerating tank
Lateral body wall, and steam pipe is provided with below activated carbon discharge port, the detergent outlet is arranged in the bottom end of regenerating tank.
In a kind of regeneration method of above-mentioned granular activated carbon, in the step (b), during the acid solution impregnates
It is impregnated using the concentrated sulfuric acid, and the mass concentration of the concentrated sulfuric acid is not less than 80%, preferably 98% concentrated sulfuric acid.
In a kind of regeneration method of above-mentioned granular activated carbon, in the step (b), the acid solution impregnates,
Use the volume of the concentrated sulfuric acid for 1-2 times of the activated carbon volume, soaking time 12 arrives r for 24 hours.
In a kind of regeneration method of above-mentioned granular activated carbon, the alkaline solution in the step (d) selects carbonic acid
One kind in sodium, sodium bicarbonate, potassium carbonate, saleratus, and the hydroxyl solution that alkaline solution is mass concentration 2-5%.
In a kind of regeneration method of above-mentioned granular activated carbon, the step (a) is described to use steam or xeothermic sky
Gas is dried up, and the activated carbon moisture content after drying is below 50%.Selected steam is industrial common, can be low pressure
Or mesohigh steam.
In a kind of regeneration method of above-mentioned granular activated carbon, the washing in the step (d), using sodium carbonate etc.
Granular activated carbon washs after aqueous slkali handles step (b), stops rinsing when pH value is 3 until discharge water reaches, then add
Enter hydrogen peroxide to aoxidize the organic pollution in granular activated carbon.
In a kind of regeneration method of above-mentioned granular activated carbon, the tank body and internal element of the granular activated carbon are resistance to
Strong acid weak acid highly basic weak base and anti-oxidant material.
Compared with prior art, it is the advantages of invention：Simple with method, regenerated liquid can recycle, hydrogen peroxide
It is used in regenerative process almost all, does not generate any pollutant, expense is low, and energy consumption is small, easy to operate, regeneration oxidation
Hydrogen peroxide and organic matter reaction, ultimately form carbon dioxide and water, do not generate any pollution.
Description of the drawings
For the clearer technical solution for illustrating the embodiment of the present invention or the prior art, to embodiment or will show below
There is attached drawing needed in technology description to do simple introduction.
Fig. 1 is the structural diagram of the present invention
Specific implementation mode
Below in conjunction with the attached drawing in inventive embodiments, the technical solution in inventive embodiments is carried out clear, complete
Description, it is clear that described embodiment is only invention a part of the embodiment, instead of all the embodiments.Based in invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts,
Belong to the range of invention protection.
The regeneration method of granular activated carbon, includes the following steps；Include the following steps；(a) it dries：Using steam or heat
Air dries granular activated carbon；The step (a) is described to be dried up using steam or heated dry air, after drying
Activated carbon moisture content is below 50%.Selected steam is industrial common, can be low pressure or mesohigh steam, (b) acid
Solution impregnates：Granular activated carbon is impregnated using sulfuric acid；The acid solution is impregnated in impregnating using the concentrated sulfuric acid, and
The mass concentration of the concentrated sulfuric acid is not less than 80%, and preferably 98% concentrated sulfuric acid, the acid solution impregnates, using the body of the concentrated sulfuric acid
Product is 1-2 times of the activated carbon volume, and soaking time 12 (c) squeezes out acid water to r for 24 hours：It will be acid with compressed air method
Solution squeezes out；(d) it rinses：1. being rinsed to granular activated carbon after step (b) processing using light alkali solution, light alkali soluble is 2. used
PH value should be adjusted to 3 when liquid rinses granular activated carbon after step (b) processing, and hydrogen peroxide is then added by seed activity carbon surface
Pollutant is aoxidized, and 3. uses light alkali solution to continue to rinse to granular activated carbon after step (b) processing, until pH value is adjusted to 6
To 7；One kind in alkaline solution selection sodium carbonate, sodium bicarbonate, potassium carbonate, saleratus in the step (d), and alkali
Property solution be mass concentration 2-5% hydroxyl solution, the washing in the step (d), using aqueous slkalis pair such as sodium carbonate
Granular activated carbon is washed after step (b) processing, stops rinsing when pH value is 3 until discharge water reaches, hydrogen peroxide is then added
Organic pollution in granular activated carbon is aoxidized, the regenerating active carbon system and device, including regenerating tank 1, dioxygen
Water inlet 2, sulfuric acid import 3, lye import 4, waste gas outlet 5, activated carbon import 6, activated carbon discharge port 7, steam pipe 8 and washing
Agent outlet 9, the upper end of the regenerating tank 1 is provided with dioxygen water inlet 2, and the right side of dioxygen water inlet 2 is provided with sulfuric acid import
3, the right side of the sulfuric acid import 3 is provided with lye import 4, and the right side opening of lye import 4 is equipped with waste gas outlet 5, described useless
The right side of gas outlet 5 is provided with activated carbon import 6, and the right side body wall in regenerating tank 1 is arranged in the activated carbon discharge port 7, and living
The lower section of property charcoal discharge port 7 is provided with steam pipe 8, and the detergent outlet 9 is arranged in the bottom end of regenerating tank 1, detergent outlet 9
Front end is equipped with interconnecting piece 10, and the section of the interconnecting piece 10 is trapezoidal in what is stood upside down, and interconnecting piece rear end is equipped with catch gear described in catch 11
Piece 11 it is rounded, and diameter be more than interconnecting piece 10 bottom surface diameter.
The foregoing is merely invention preferred embodiments, are not invented to limit, all spirit and principle in invention
Within, any modification, equivalent substitution, improvement and etc. done should be included within the protection domain of invention.
Claims (7)
1. the regeneration method of granular activated carbon, which is characterized in that include the following steps；(a) it dries：Using steam or hot-air
Granular activated carbon is dried；(b) acid solution impregnates：Granular activated carbon is impregnated using sulfuric acid；(c) it squeezes out acid
Water：Acid solution is squeezed out with compressed air method；(d) it rinses：1. using light alkali solution to granular activated carbon after step (b) processing
It is rinsed, pH value should be adjusted to 3 when light alkali solution 2. being used to rinse granular activated carbon after step (2) processing, then be added double
Oxygen water aoxidizes the pollutant of seed activity carbon surface, 3. uses light alkali solution to granular activated carbon after step (2) processing
Continue to rinse, until pH value is adjusted to 6 to 7；The regenerating active carbon system and device, including regenerating tank (1), dioxygen water inlet
(2), sulfuric acid import (3), lye import (4), waste gas outlet (5), activated carbon import (6), activated carbon discharge port (7), steam pipe
(8) and detergent outlet (9), the upper end of the regenerating tank (1) are provided with dioxygen water inlet (2), and the right side of dioxygen water inlet (2)
Side is provided with sulfuric acid import (3), and lye import (4), and the right side of lye import (4) are provided on the right side of the sulfuric acid import (3)
Side offers waste gas outlet (5), and activated carbon import (6), the activated carbon discharge port are provided on the right side of the waste gas outlet (5)
(7) the right side body wall in regenerating tank (1) is set, and is provided with steam pipe (8), the washing below activated carbon discharge port (7)
Agent exports (9) and is arranged in the bottom end of regenerating tank (1).
2. the regeneration method of granular activated carbon according to claim 1, which is characterized in that described in the step (b)
Acid solution impregnate in impregnated using the concentrated sulfuric acid, and the mass concentration of the concentrated sulfuric acid is not less than 80%, preferably 98% dense sulphur
Acid.
3. the regeneration method of granular activated carbon according to claim 2, which is characterized in that described in the step (b)
Acid solution impregnate, it is 1-2 times of the activated carbon volume to use the volume of the concentrated sulfuric acid, and soaking time 12 arrives r for 24 hours.
4. the regeneration method of granular activated carbon according to claim 1, which is characterized in that the alkali in the step (d)
Property solution selection sodium carbonate, sodium bicarbonate, potassium carbonate, one kind in saleratus, and alkaline solution is mass concentration 2-5%'s
Hydroxyl solution.
5. the regeneration method of granular activated carbon according to claim 1, which is characterized in that the step (a) is described to adopt
It is dried up with steam or heated dry air, the activated carbon moisture content after drying is 50% hereinafter, selected steam is industrial
Low pressure or mesohigh steam.
6. the regeneration method of granular activated carbon according to claim 1, which is characterized in that washing in the step (d)
Wash, using the aqueous slkalis such as sodium carbonate to step (b) processing after granular activated carbon wash, to be discharged water reach pH value be 3 when
Stop rinsing, hydrogen peroxide is then added and aoxidizes the organic pollution in granular activated carbon.
7. the regeneration method of granular activated carbon according to claim 1, which is characterized in that the tank body of the granular activated carbon
It is the weak acid of resistance to strong acid highly basic weak base and anti-oxidant material with internal element.
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| CN201810354131.8A CN108745327A (en) | 2018-04-19 | 2018-04-19 | The regeneration method of granular activated carbon |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110606485A (en) * | 2019-08-12 | 2019-12-24 | 新疆同力和环材科技有限公司 | Preparation method of hydrogen peroxide modified coal-based activated carbon |
| CN110882682A (en) * | 2019-12-04 | 2020-03-17 | 吉林省电力科学研究院有限公司 | Regeneration method of activated carbon for water treatment in thermal power plant |
| CN111013542A (en) * | 2020-01-06 | 2020-04-17 | 刘德庆 | Regeneration method of powdered activated carbon |
| CN111111632A (en) * | 2020-01-17 | 2020-05-08 | 赢特环保科技(无锡)有限公司 | Device and method for removing calcium and magnesium ions in pores of adsorbent |
| CN113713794A (en) * | 2021-09-07 | 2021-11-30 | 中冶赛迪技术研究中心有限公司 | Desulfurization activated carbon regeneration system and method by utilizing microwave coupling hydrogen peroxide |
| CN114146698A (en) * | 2021-11-19 | 2022-03-08 | 国网吉林省电力有限公司电力科学研究院 | Regeneration method of silica gel particles in solid adsorbent tube |
| CN114247437A (en) * | 2021-12-21 | 2022-03-29 | 甘肃银光化学工业集团有限公司 | Chemical regeneration method of granular active carbon for adsorbing nitramine compound |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110882682A (en) * | 2019-12-04 | 2020-03-17 | 吉林省电力科学研究院有限公司 | Regeneration method of activated carbon for water treatment in thermal power plant |
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| CN113713794A (en) * | 2021-09-07 | 2021-11-30 | 中冶赛迪技术研究中心有限公司 | Desulfurization activated carbon regeneration system and method by utilizing microwave coupling hydrogen peroxide |
| CN113713794B (en) * | 2021-09-07 | 2023-10-13 | 中冶赛迪技术研究中心有限公司 | Desulfurization activated carbon regeneration system and method using microwave coupling hydrogen peroxide |
| CN114146698A (en) * | 2021-11-19 | 2022-03-08 | 国网吉林省电力有限公司电力科学研究院 | Regeneration method of silica gel particles in solid adsorbent tube |
| CN114247437A (en) * | 2021-12-21 | 2022-03-29 | 甘肃银光化学工业集团有限公司 | Chemical regeneration method of granular active carbon for adsorbing nitramine compound |
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Address after: 310000 Gongshu District, Hangzhou City, Zhejiang Province, 260 Space Building, 2 514 Rooms Applicant after: HANGZHOU LISHANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 310000 Zhejiang Hangzhou Gongshu District harmony street Gongshu District 360 space mansion 2 building 514 room. Applicant before: HANGZHOU LISHANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 310000 Gongshu District, Hangzhou City, Zhejiang Province, 260 Space Building, 2 514 Rooms Applicant after: Zhejiang Lishang Environmental Protection Technology Co., Ltd Address before: 310000 Gongshu District, Hangzhou City, Zhejiang Province, 260 Space Building, 2 514 Rooms Applicant before: HANGZHOU LISHANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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| CB02 | Change of applicant information |