CN105582904A - Method for regenerating activated carbon - Google Patents
Method for regenerating activated carbon Download PDFInfo
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- CN105582904A CN105582904A CN201610074705.7A CN201610074705A CN105582904A CN 105582904 A CN105582904 A CN 105582904A CN 201610074705 A CN201610074705 A CN 201610074705A CN 105582904 A CN105582904 A CN 105582904A
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- active carbon
- activated carbon
- regeneration
- renovation process
- solvent
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- 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
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
Abstract
The invention relates to a method for regenerating activated carbon. The method is characterized in that the method comprises the steps of mixing a regeneration solvent having a solution temperature of 50-120 DEG C and waste activated carbon in a volume ratio of 3:1-1:3 and soaking for 10-60min; carrying out solid-liquid separation on the soaked mixture; washing the separated activated carbon to be treated with water in a volume ratio of the activated carbon to be treated to water of 1:2-1:5; and activating the washed pre-treated activated carbon with microwaves, wherein the regeneration solvent is composed of 1-10% of alkaline substance, 65-95% of organic solvent and 1-25% of water by mass percentage. The method can remove organic substances and inorganic substances adsorbed on the surface and in the micropores of the activated carbon to the maximum extent, the regenerates can be circularly utilized, the regeneration speed of the activated carbon and the quality of the regenerated carbon are improved, the regeneration cost of the activated carbon is reduced and the regeneration efficiency and the regeneration quality of the activated carbon are improved.
Description
Technical field
The invention belongs to the saturated Regenevating Waste Activated Carbon field of absorption, be specifically related to a kind of renovation process of active carbon.
Background technology
It is large that active carbon has specific area, the feature of high adsorption capacity. As adsorbent, active carbon be widely used in industrial production,In environmental protection and people's lives, it is a kind of indispensable important sorbing material.
Most activated carbon products are all disposable uses, because cost recovery is high, after mostly using, are all dropped, therebyCause secondary pollution, so the regeneration of waste active carbon saturated absorption is had to extremely important engineering using value and economic valencyValue.
Regenerating active carbon is that the saturated active carbon of absorption is recovered to its absorption property by the whole bag of tricks, reaches and recycles, jointThe object of about resource. Renovation process depends primarily on the physical property of charcoal absorption, at present domestic and international comparatively ripe regeneration sideMethod has three kinds, instant heating regeneration, chemical regeneration and bio-regeneration. But all there is certain defect and limitation in these methods. AsPatent publication No. is the technology that CN103230785 has introduced high temperature regeneration active carbon in smoldering furnace; Patent publication No. isThereby CN104190389 has introduced by hot-air Dissociative adsorption the active carbon of oxide, nitrogen oxide and dioxin to be regenerated;Patent publication No. is that CN103212391 introduces a kind of microwave activity carbon regeneration method and emission-control equipment thereof; Patent publication No. isThereby CN1544142 has introduced and has utilized microwave reinforced solvent reclamation to remove the technology of organic pollution regeneration; Patent publication No. isCN104815633 has introduced the microorganisms reproduction method that nonyl phenol has adsorbed saturated granular activated carbon of processing. Use at present at mostThe method of regenerated carbon is traditional hot method of reproduction, but the power consumption of hot regenerative process is large, and charcoal loss is more, and cost is higher. Solvent againRaw, mild condition, on active carbon structure, without impact, regeneration efficiency is high, but in active carbon hole, organic matter can not be removed completely,Repeatedly, after regeneration, charcoal hole is blocked, and active carbon is just without adsorption effect; Bio-regeneration cost is lower, little on active carbon impact, stillApplicability is lower, and some poisonous and harmful hard-degraded substance is just difficult to use this kind of renovation process. Because active carbon is that a kind of polarity is situated betweenMatter, and microwave heats polar substances, with respect to the heating of traditional heating method ecto-entad, it is to heat from inside to outside, reducesHeat time, reduce the charcoal loss of regenerative process. But this kind of regeneration is due to steep temperature rise, and the larger molecular organics in charcoal hole holdsEasily carbonization, stops up charcoal hole, the adsorption effect of activated carbon in water after impact regeneration.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of renovation process of active carbon is provided; The method mainly comprises the following steps:First be, that the ratio that the regenerated solvent of 50 DEG C～120 DEG C is 3:1～1:3 with waste active carbon according to volume ratio is mixed by solution temperatureSoak 10 minutes～60 minutes;
Secondly, the mixture of immersion is carried out to separating of solid and liquid, obtain the pending active carbon of solid; And separate after liquid weightThe organic solvent obtaining after steaming can be recycled again;
Again, the ratio that is 1:2～1:5 according to volume ratio by the pending active carbon being separated to and water is washed, and after washing, suction filtration obtainsTo pretreatment active carbon;
Finally, with microwave to washing after pretreatment active carbon activate, after activation, get final product to obtain regenerated carbon;
Described regenerated solvent is by 1%～10% alkaline matter according to mass percent, 65%～95% organic solvent and 1%～25% water forms.
As the further improvement of such scheme, described alkaline matter is for being selected from NaOH, sodium carbonate, potassium hydroxide and carbonThe mixed liquor of one or more in acid potassium.
Preferably, described alkaline matter is NaOH. Adopt NaOH can better remove the inorganic of charcoal absorptionThing and organic matter, and can be used as follow-up with microwave treatment pretreatment active carbon the activator to regenerate.
As the further improvement of such scheme, described organic solvent is for being selected from methyl alcohol, ethanol, normal propyl alcohol, isopropyl alcohol, thirdThe mixed liquor of one or more in ketone, butanone.
Preferably, described organic solvent is ethanol. Because ethanol is with respect to other solvents, it is to environment or operating personnelDamage little.
As the further improvement of such scheme, described regenerated solvent is by 4% alkaline matter, 95% according to mass percentOrganic solvent and 1% water form. This scheme has following benefit: the generation of waste water in (1), minimizing regenerative process; (2),Alkalescence stronger in regenerative process can be provided; (3), be conducive to the recovery of solvent.
As the further improvement of such scheme, described micro-wave frequency is the one in 915MHZ and 2450MZ, microwavePower be 500W～6400W.
As the further improvement of such scheme, described soak time is 3min～17min.
As the further improvement of such scheme, the mass content of the moisture of the regenerated carbon after described activation 14%～Between 16%.
So-called activation is the namely process of regenerating active carbon of active carbon pore-creating, adopts the mode of microwave not only can make active carbonThe environment of regenerative process is raised to best temperature fast, also can reduce the loss to active carbon, plays the effect of protection; TherebyImprove the reproduction speed of active carbon and the quality of regenerated carbon, and then reduce the cost of regenerating active carbon, improve regenerating active carbonEfficiency and quality.
The present invention compared with prior art, has the following advantages:
1, organic solvent and alkaline matter are collaborative soaks, and can maximizedly remove charcoal absorption organic matter in surface and microporeAnd inorganic matter;
2, boiling point used, compared with low organic solvent, can reclaim, thereby can cycle utilization reduce regeneration cost;
3, alkaline matter used not only can be resolved organic matter and the inorganic matter of activated carbon surface and micropore, can be used as active carbon simultaneouslyActivator in micro wave regeneration process;
4, adopt the mode of microwave not only can make the environment of regenerating active carbon process be raised to fast best temperature, also can reduce workThe loss of property charcoal, plays the effect of protection; Thereby improve the reproduction speed of active carbon and the quality of regenerated carbon, and then reduceThe cost of regenerating active carbon, efficiency and the quality of raising regenerating active carbon.
Detailed description of the invention
Describe the present invention below in conjunction with specific embodiment, but not as a limitation of the invention.
Embodiment 1:
The specific area 1020.7m of the new charcoal of Powdered Activated Carbon in embodiment 12/ g, it is mainly used in pharmacy decolouring.
First, regenerated solvent is according to following mass fraction: NaOH 4%, and alcohol 95 % and 1% water are mixed to get,And being heated to 100 degrees Celsius, the waste active carbon volume that regenerative agent volume is saturated with absorption mixes and soaks 10 points according to 1:1 ratioClock;
Secondly, by regenerative agent and active carbon Separation of Solid and Liquid, liquid part is heavily steamed, and collects organic reagent, can recycle next timeRegeneration; The solid separating obtains pending active carbon;
Again, the pending active carbon obtaining after Separation of Solid and Liquid is rinsed to suction filtration after washing with the water that doubles pending active carbon volumeObtain pretreatment active carbon;
Finally, it is 915MHZ that the pretreatment active carbon after washing is placed in to microwave frequency, spoke in the microwave irradiation device that power is 800wPenetrate processing, soak time is 7in. After cooling, obtain the active carbon of regeneration.
The active carbon specific area of regenerating in embodiment 1 is 1187.5m2/ g, regeneration rate is 116%, almost lossless.
By saturated charcoal absorption rear regeneration 10 times, regenerating active carbon rate can also reach 85%, and loss is in 10%.
Embodiment 2:
The specific area 812m of the new charcoal of granular activated carbon in embodiment 22/ g, it is mainly used in the tap water purifying of waterworks.
First, regenerated solvent is according to following mass fraction: sodium carbonate 10%, and acetone 65%, 25% water is mixed to get, andBe heated to 50 degrees Celsius, the waste active carbon volume that regenerative agent volume is saturated with absorption mixes and soaks 20 minutes according to 1:3 ratio;Secondly, by regenerative agent and active carbon Separation of Solid and Liquid, liquid part is heavily steamed, and collects organic reagent, can recycle next timeRegeneration; The solid separating obtains pending active carbon;
Again, the pending active carbon obtaining after Separation of Solid and Liquid is rinsed to suction filtration after washing with the water that is doubled in pending active carbon volumeObtain pretreatment active carbon;
Finally, it is 915MHZ that the pretreatment active carbon after washing is placed in to microwave frequency, spoke in the microwave irradiation device that power is 950wPenetrate processing, soak time is 3.5min. After cooling, obtain the active carbon of regeneration.
The embodiment 2 active carbon specific area of regenerating is 916.3m2/ g, regeneration rate is 113%, almost lossless.
By saturated charcoal absorption rear regeneration 10 times, regenerating active carbon rate can also reach 87%, and loss is in 10%.
Embodiment 3:
The specific area 647.3m of the new charcoal of granular activated carbon in embodiment 32/ g, it is mainly used in essence factory exhaust-gas treatment.
First, regenerated solvent is according to potassium hydroxide 1%; Isopropyl alcohol 95%; 4% water is mixed to get, and is heated to 80 CelsiusDegree, the waste active carbon volume that regenerative agent volume is saturated with absorption mixes and soaks 60 minutes according to 3:1 ratio;
Secondly, by regenerative agent and active carbon Separation of Solid and Liquid, liquid part is heavily steamed, and collects organic reagent, can recycle next timeRegeneration; The solid separating obtains pending active carbon;
Again, the pending active carbon obtaining after Separation of Solid and Liquid is rinsed to suction filtration after washing with 1.5 times of water to pending active carbon volumeObtain pretreatment active carbon;
Finally, it is 2450MHz that the pretreatment active carbon after washing is placed in to microwave frequency, in the microwave irradiation device that power is 1150wRadiation treatment, radiation drying time is 3min, soak time is 15min. After cooling, obtain the active carbon of regeneration.
The embodiment 3 active carbon specific area of regenerating is 711.8m2/ g, regeneration rate is 110%, almost lossless.
By saturated charcoal absorption rear regeneration 10 times, regenerating active carbon rate can also reach 80%, and loss is in 10%.
From embodiment 1～3, be not difficult to find out that the present invention compared with prior art, has the following advantages:
1, organic solvent and alkaline matter are collaborative soaks, and can maximizedly remove charcoal absorption organic matter in surface and microporeAnd inorganic matter;
2, boiling point used, compared with low organic solvent, can reclaim, thereby can cycle utilization reduce regeneration cost;
3, alkaline matter used not only can be resolved organic matter and the inorganic matter of activated carbon surface and micropore, can be used as active carbon simultaneouslyActivator in micro wave regeneration process;
4, adopt the mode of microwave not only can make the environment of regenerating active carbon process be raised to fast best temperature, also can reduce workThe loss of property charcoal, plays the effect of protection; Thereby improve the reproduction speed of active carbon and the quality of regenerated carbon, and then reduceThe cost of regenerating active carbon, efficiency and the quality of raising regenerating active carbon.
Below the present invention is described in detail, but apparent, those skilled in the art can carry out various changes andImprove, and do not deviate from the scope of the present invention that appended claims limits.
Claims (8)
1. a renovation process for active carbon, is characterized in that, mainly comprises the following steps:
First be, that the ratio that the regenerated solvent of 50 DEG C～120 DEG C is 3:1～1:3 with waste active carbon according to volume ratio is mixed by solution temperatureSoak 10 minutes～60 minutes;
Secondly, the mixture of immersion is carried out to separating of solid and liquid, obtain the pending active carbon of solid;
Again, the ratio that is 1:2～1:5 according to volume ratio by the pending active carbon being separated to and water is washed, and after washing, suction filtration obtainsTo pretreatment active carbon;
Finally, with microwave to washing after pretreatment active carbon activate, after activation, get final product to obtain regenerated carbon;
Described regenerated solvent is by 1%～10% alkaline matter according to mass percent, 65%～95% organic solvent and 1%～25% water forms.
2. the renovation process of a kind of active carbon according to claim 1, is characterized in that, described alkaline matter is for being selected from hydroxideThe mixed liquor of one or more in sodium, sodium carbonate, potassium hydroxide and potash.
3. the renovation process of a kind of active carbon according to claim 2, is characterized in that, described alkaline matter is NaOH.
4. the renovation process of a kind of active carbon according to claim 1, is characterized in that, described organic solvent for be selected from methyl alcohol,The mixed liquor of one or more in ethanol, normal propyl alcohol, isopropyl alcohol, acetone, butanone.
5. the renovation process of a kind of active carbon according to claim 4, is characterized in that, described organic solvent is ethanol.
6. the renovation process of a kind of active carbon claimed in claim 1, is characterized in that, described regenerated solvent according to mass percent isAlkaline matter by 4%, 95% organic solvent and 1% water form.
7. the renovation process of a kind of active carbon according to claim 1, is characterized in that, described micro-wave frequency is 915MHZWith the one in 2450MZ, the power of microwave is 500W～6400W.
8. the renovation process of a kind of active carbon according to claim 1, is characterized in that, described soak time is 3min～17min.
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| CN201610074705.7A CN105582904A (en) | 2016-02-02 | 2016-02-02 | Method for regenerating activated carbon |
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| CN201610074705.7A CN105582904A (en) | 2016-02-02 | 2016-02-02 | Method for regenerating activated carbon |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051415A (en) * | 2017-04-13 | 2017-08-18 | 福建省荔元活性炭实业有限公司 | A kind of method of gluconacetobacter regenerated carbon |
| CN107827193A (en) * | 2017-10-27 | 2018-03-23 | 山东毅康科技股份有限公司 | A kind of Enteromorpha biology charcoal bag and its regeneration technology, preparation technology and application |
| CN108554395A (en) * | 2018-03-30 | 2018-09-21 | 河北科技大学 | A kind of regeneration method of paracetamol refining stage inactivation activated carbon |
| CN108704631A (en) * | 2018-06-19 | 2018-10-26 | 刘悉承 | A kind of regeneration method of pharmaceuticals industry activated carbon |
| CN109876785A (en) * | 2019-04-09 | 2019-06-14 | 福建农林大学 | A kind of method of ultrasonic wave added low melting point solid peracid regeneration waste active carbon |
| CN109876786A (en) * | 2019-04-09 | 2019-06-14 | 福建农林大学 | A kind of method of low melting point solid peracid regenerating waste active carbon |
| CN110354830A (en) * | 2019-07-10 | 2019-10-22 | 南京安捷特环保科技有限公司 | Granulated activated carbon regeneration method |
| CN111229191A (en) * | 2020-01-19 | 2020-06-05 | 内蒙古科技大学 | Efficient regeneration activation method for recycling gold-loaded activated carbon |
| CN112076736A (en) * | 2020-09-15 | 2020-12-15 | 中科富海(中山)低温装备制造有限公司 | Internal boiling activated carbon treatment process |
| CN112758929A (en) * | 2021-02-26 | 2021-05-07 | 上海大学材料基因组工程(萍乡)研究院 | Waste activated carbon regeneration method |
| CN113578292A (en) * | 2021-08-30 | 2021-11-02 | 赣州有色冶金研究所有限公司 | Method for extracting regenerated powdered activated carbon by supercritical carbon dioxide |
| CN115845826A (en) * | 2022-12-16 | 2023-03-28 | 赣州有色冶金研究所有限公司 | Method for regenerating waste activated carbon by ammonia |
| CN117160432A (en) * | 2023-08-17 | 2023-12-05 | 清远市富盈电子有限公司 | Desorption liquid, preparation method, active carbon desorption method and active carbon |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051415B (en) * | 2017-04-13 | 2021-05-28 | 福建省荔元活性炭实业有限公司 | Method for regenerating activated carbon by using gluconacetobacter |
| CN107051415A (en) * | 2017-04-13 | 2017-08-18 | 福建省荔元活性炭实业有限公司 | A kind of method of gluconacetobacter regenerated carbon |
| CN107827193A (en) * | 2017-10-27 | 2018-03-23 | 山东毅康科技股份有限公司 | A kind of Enteromorpha biology charcoal bag and its regeneration technology, preparation technology and application |
| CN108554395A (en) * | 2018-03-30 | 2018-09-21 | 河北科技大学 | A kind of regeneration method of paracetamol refining stage inactivation activated carbon |
| CN108704631A (en) * | 2018-06-19 | 2018-10-26 | 刘悉承 | A kind of regeneration method of pharmaceuticals industry activated carbon |
| CN109876785B (en) * | 2019-04-09 | 2022-03-08 | 福建农林大学 | Method for regenerating waste activated carbon by using ultrasonic-assisted low-melting-point solid acid |
| CN109876786B (en) * | 2019-04-09 | 2022-03-08 | 福建农林大学 | Method for regenerating waste activated carbon by using low-melting-point solid acid |
| CN109876786A (en) * | 2019-04-09 | 2019-06-14 | 福建农林大学 | A kind of method of low melting point solid peracid regenerating waste active carbon |
| CN109876785A (en) * | 2019-04-09 | 2019-06-14 | 福建农林大学 | A kind of method of ultrasonic wave added low melting point solid peracid regeneration waste active carbon |
| CN110354830A (en) * | 2019-07-10 | 2019-10-22 | 南京安捷特环保科技有限公司 | Granulated activated carbon regeneration method |
| CN111229191A (en) * | 2020-01-19 | 2020-06-05 | 内蒙古科技大学 | Efficient regeneration activation method for recycling gold-loaded activated carbon |
| CN112076736A (en) * | 2020-09-15 | 2020-12-15 | 中科富海(中山)低温装备制造有限公司 | Internal boiling activated carbon treatment process |
| CN112076736B (en) * | 2020-09-15 | 2022-06-24 | 中科富海(中山)低温装备制造有限公司 | Internal boiling activated carbon treatment process |
| CN112758929A (en) * | 2021-02-26 | 2021-05-07 | 上海大学材料基因组工程(萍乡)研究院 | Waste activated carbon regeneration method |
| CN112758929B (en) * | 2021-02-26 | 2023-05-23 | 上海大学材料基因组工程(萍乡)研究院 | Waste activated carbon regeneration method |
| CN113578292A (en) * | 2021-08-30 | 2021-11-02 | 赣州有色冶金研究所有限公司 | Method for extracting regenerated powdered activated carbon by supercritical carbon dioxide |
| CN115845826A (en) * | 2022-12-16 | 2023-03-28 | 赣州有色冶金研究所有限公司 | Method for regenerating waste activated carbon by ammonia |
| CN117160432A (en) * | 2023-08-17 | 2023-12-05 | 清远市富盈电子有限公司 | Desorption liquid, preparation method, active carbon desorption method and active carbon |
| CN117160432B (en) * | 2023-08-17 | 2024-03-19 | 清远市富盈电子有限公司 | Desorption liquid, preparation method, active carbon desorption method and active carbon |
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Application publication date: 20160518 |
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| RJ01 | Rejection of invention patent application after publication |