CN109433173A - The method of Regenevating Waste Activated Carbon - Google Patents
The method of Regenevating Waste Activated Carbon Download PDFInfo
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- CN109433173A CN109433173A CN201811553129.XA CN201811553129A CN109433173A CN 109433173 A CN109433173 A CN 109433173A CN 201811553129 A CN201811553129 A CN 201811553129A CN 109433173 A CN109433173 A CN 109433173A
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- Prior art keywords
- active carbon
- waste
- water
- waste active
- 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
- B01J20/3416—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
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
- B01J20/3466—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase with steam
-
- 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
Abstract
The present invention relates to a kind of methods of Regenevating Waste Activated Carbon, belong to environmental technology field.The regeneration method, comprising the following steps: water is added in waste active carbon, obtains wet waste active carbon；Wet waste active carbon is entered into retort furnace tail, through high temperature carbonization；Waste active carbon after high temperature carbonization is put into stirred tank, while being passed through water, is sufficiently mixed；Waste active carbon after washing is squeezed into plate and frame filter press, activation furnace feeding warehouse is entered after filters pressing；To the waste active carbon entered in activation furnace feeding warehouse, tackifier are added, then graininess is squeezed by extruder；By graininess waste active carbon in step 5 by frequency-change feeding machine even into activation furnace, with flue gas and the water vapour haptoreaction being passed through, the activated carbon adsorption performance obtained after high-temperature activation can reach 90% or more of former charcoal adsorption effect.Regeneration method provided by the present invention, it is scientific and reasonable, it is simple and easy, solve the problems, such as that Powdered Activated Carbon weight loss is serious, favorable regeneration effect.
Description
Technical field
The present invention relates to a kind of methods of Regenevating Waste Activated Carbon, belong to environmental technology field.
Background technique
Saturation is adsorbed the active carbon of various impurity by special by the inverse process for being regenerated as activated carbon adsorption of active carbon
Processing makes active carbon restore adsorption capacity, to be reused for adsorption process, improves its service life, reduces production cost, subtract
The waste of few resource.
There are many regeneration method of active carbon at present, chemical method, bio-regeneration method, wet oxidation process, electricity such as medicament elution
Solve oxidizing process and heating method of reproduction etc., wherein hot recycling is high with regeneration efficiency, the reproduction time is short, to adsorbate substantially without selection
The advantages that as the regeneration method of active carbon being industrially most widely used at present.But powdered active carbon in traditional hot recycling method
It because of lighter weight, is easily taken away by flowable gas, there is a problem of that charcoal loss is very big.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of methods of Regenevating Waste Activated Carbon, scientific and reasonable,
It is simple and easy, solve the problems, such as that Powdered Activated Carbon weight loss is serious, favorable regeneration effect.
The method of Regenevating Waste Activated Carbon of the present invention, comprising the following steps:
1) water is added in waste active carbon, control water content is the 50-60% of waste active carbon and water gross mass, is obtained wet useless
Active carbon；
2) wet waste active carbon obtained in step 1 enters retort furnace tail, and after high temperature carbonization, the organic matter of absorption is big absolutely
Partial detachment, cracking, are discharged with tail gas；
3) waste active carbon in step 2 after high temperature carbonization is put into stirred tank, while is passed through water, stirred 1 hour
It is sufficiently mixed, washes away the salinity adsorbed in waste active carbon；
4) by step 3 wash after waste active carbon squeeze into plate and frame filter press, after filter press filters pressing enter activation furnace into
Feed bin；
5) to the waste active carbon entered in activation furnace feeding warehouse, tackifier are added, then graininess is squeezed by extruder；
6) by graininess waste active carbon in step 5 by frequency-change feeding machine even into activation furnace, and flue gas and lead to
The water vapour haptoreaction entered, the activated carbon adsorption performance obtained after high-temperature activation can reach new activated carbon adsorption performance
90%；Furnace inner exhaust gas is drawn through air-introduced machine, enters secondary incinerator together with the exhaust gas generated in step 2, sufficiently mixed with air
It closes, burning, the high-temperature gas after burning enters boiler using steam residual-heat, and the steam supply activation furnace of generation makees activator；After burning
High-temperature gas after spray column, condensing tower, bag filter qualified discharge.
In the step 2, the burner of retort is connected with natural gas high temperature furnace, and high temperature furnace temperature is 750 DEG C, natural gas
Burning exhausts the oxygen being introduced into air, produces CO2, while high-temperature low-oxygen gas enters activation furnace, provides waste active carbon charing institute
Need energy.
The step 2 high temperature carbonization temperature is 400-450 DEG C, and the air for introducing retort is consumed through combustion of natural gas
After oxygen, oxygen content is less than 1%；Anoxic condition can not only be reached, also reduce the high temperature resistant requirement to equipment material.
The water being added in the step 3, quality are 2-4 times of the waste active carbon quality in step 2 after high temperature carbonization.
In the step 4, the waste water generated after filter press filters pressing enters effluent storage tank, and waste water is after electrodialysis is desalinated
It is recycled into surge tank, concentrated water enters incinerator after compatibility and burns, and forms solid salt.
When concentrated water refers to electrodialysis process waste water, waste water salinity is excessive and the inoperative waste water of electrodialysis.
In the step 5, tackifier are one or more of water, ethyl alcohol, second diester；Quality be into activation furnace into
The 3-5% of the waste active carbon quality of feed bin；Solves the problem of Powdered Activated Carbon kicks the beam, is discharged with tail gas.
The activation in-furnace temperature is 800-950 DEG C, and activation furnace heating method is external heat.
Compared with prior art, the invention has the following beneficial effects:
1. regeneration method described in, scientific and reasonable, simple and easy, the waste water of generation is few, and Ke Xunhuanliyong, reduces life
Produce cost；
2. regeneration method described in solves the problems, such as that Powdered Activated Carbon weight loss is serious, while regenerated carbon energy
Reach 90% or more of former charcoal adsorption effect, favorable regeneration effect.
Specific embodiment
The present invention will be further explained with reference to the examples below.
Embodiment 1
The method of the Regenevating Waste Activated Carbon, comprising the following steps:
1. water is added in 10g waste active carbon, the quality that water is added is 10g, obtains wet waste active carbon.
2. the wet waste active carbon that step 1 obtains is added in gas retort, the wet waste active carbon of 10g is put into rectangle, is uniformly spread
It opens, is passed through N2Half an hour starts to warm up, and exhaust port is inserted into 2mm in water；100 DEG C are warming up to, nitrogen inlet is closed, is risen
Temperature is to 450 DEG C of set temperature；Open nitrogen and be passed through valve, be slowly introducing nitrogen, observe exhaust port bubble number, each second 2-
4；450 DEG C of set temperature are maintained, duration 1h；Experiment finishes, and is naturally cooling to 100 DEG C, oxygen content 0.5%；It takes out
Active carbon；
3. the active carbon precise 5g in step 2 is put into 100ml round bottle, 20g water is added；1h is sufficiently stirred, washes
Remove salinity；
4. the waste active carbon after washing is squeezed into plate and frame filter press, activation furnace feeding warehouse is entered after filter press filters pressing；
5. tackifier ethyl alcohol is added in the active carbon that step 4 obtains, additional amount 0.25g is processed into diameter 5mm, long
The column-shaped active carbon of 10mm；
6. being put into the active carbon material that step 5 obtains in Muffle furnace uniformly to spread out, it is passed through CO2Half an hour starts to warm up；
Exhaust port is inserted into 2mm in water；900 DEG C are warming up to, 1 hour is maintained；
7. taking out active carbon, its absorption index is detected, is compared with former charcoal.
Embodiment 2
The method of the Regenevating Waste Activated Carbon, comprising the following steps:
1. water is added in 20g waste active carbon, the quality that water is added is 25g, obtains wet waste active carbon.
2. the wet waste active carbon that step 1 obtains is added in gas retort, the wet waste active carbon of 20g is put into rectangle, is uniformly spread
It opens, is passed through N2Half an hour starts to warm up, and exhaust port is inserted into 2mm in water；100 DEG C are warming up to, nitrogen inlet is closed, is risen
Temperature is to 420 DEG C of set temperature；Open nitrogen and be passed through valve, be slowly introducing nitrogen, observe exhaust port bubble number, each second 2-
4；420 DEG C of set temperature are maintained, duration 1h；Experiment finishes, and is naturally cooling to 100 DEG C, oxygen content 0.3%；It takes out
Active carbon；
3. the active carbon precise 10g in step 2 is put into 100ml round bottle, 30g water is added；1h is sufficiently stirred, washes
Remove salinity；
4. the waste active carbon after washing is squeezed into plate and frame filter press, activation furnace feeding warehouse is entered after filter press filters pressing；
5. tackifier ethyl alcohol is added in the active carbon that step 4 obtains, additional amount 0.5g is processed into diameter 5mm, long
The column-shaped active carbon of 10mm；
6. being put into the active carbon material that step 5 obtains in Muffle furnace uniformly to spread out, it is passed through CO2Half an hour starts to warm up；
Exhaust port is inserted into 2mm in water；850 DEG C are warming up to, 1 hour is maintained；
7. taking out active carbon, its absorption index is detected, is compared with former charcoal.
Adsorption capacity test is carried out to gained activated carbon in embodiment 1-2, test result is as shown in table 1.
Active carbon obtained by 1 embodiment 1-2 of table and former carbon adsorption aptitude tests result
Detection method: methylene blue adsorptive value is measured according to GB/T 12496.10-1999；Iodine sorption value is according to GB/
T12496.8-1999 is measured；Penetrating curve is measured according to GB/T 12496.5-1999.
Claims (7)
1. a kind of method of Regenevating Waste Activated Carbon, it is characterised in that: the following steps are included:
1) water is added in waste active carbon, control water content is the 50-60% of waste active carbon and water gross mass, obtains wet useless activity
Charcoal；
2) wet waste active carbon obtained in step 1 enters retort furnace tail, after high temperature carbonization, the organic matter overwhelming majority of absorption
Desorption, cracking, are discharged with tail gas；
3) waste active carbon in step 2 after high temperature carbonization is put into stirred tank, while is passed through water, stir 1 hour sufficiently
Mixing, washes away the salinity adsorbed in waste active carbon；
4) waste active carbon after washing in step 3 is squeezed into plate and frame filter press, activation furnace feeding warehouse is entered after filter press filters pressing；
5) to the waste active carbon entered in activation furnace feeding warehouse, tackifier are added, then graininess is squeezed by extruder；
6) by graininess waste active carbon in step 5 by frequency-change feeding machine even into activation furnace, and flue gas and be passed through
Water vapour haptoreaction；Furnace inner exhaust gas is drawn through air-introduced machine, enters secondary incinerator together with the exhaust gas generated in step 2, with
Air is sufficiently mixed, burns, and the high-temperature gas after burning enters boiler using steam residual-heat, and the steam supply activation furnace of generation activates
Agent；High-temperature gas after the burning qualified discharge after spray column, condensing tower, bag filter.
2. the method for Regenevating Waste Activated Carbon according to claim 1, it is characterised in that: in step 2, the burner of retort with
Natural gas high temperature furnace is connected, and high temperature furnace temperature is 750 DEG C, and combustion of natural gas exhausts the oxygen being introduced into air, produces CO2, simultaneously
High-temperature low-oxygen gas enters activation furnace, provides energy needed for waste active carbon carbonizes.
3. the method for Regenevating Waste Activated Carbon according to claim 1, it is characterised in that: step 2 high temperature carbonization temperature is
400-450 DEG C, the air of retort is introduced after combustion of natural gas consumes oxygen, oxygen content is less than 1%.
4. the method for Regenevating Waste Activated Carbon according to claim 1, it is characterised in that: the water being added in step 3, quality are
2-4 times of waste active carbon quality in step 2 after high temperature carbonization.
5. the method for Regenevating Waste Activated Carbon according to claim 1, it is characterised in that: in step 4, produced after filter press filters pressing
Raw waste water enters effluent storage tank, and waste water recycles after electrodialysis is desalinated into surge tank, and concentrated water enters after compatibility
Incinerator burns, and forms solid salt.
6. the method for Regenevating Waste Activated Carbon according to claim 1, it is characterised in that: in step 5, tackifier are water, second
One or more of alcohol, second diester；Quality is the 3-5% into the waste active carbon quality of activation furnace feeding warehouse.
7. the method for Regenevating Waste Activated Carbon according to claim 1, it is characterised in that: activation in-furnace temperature is 800-950
DEG C, activation furnace heating method is external heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811553129.XA CN109433173A (en) | 2018-12-18 | 2018-12-18 | The method of Regenevating Waste Activated Carbon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553129.XA CN109433173A (en) | 2018-12-18 | 2018-12-18 | The method of Regenevating Waste Activated Carbon |
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| Publication Number | Publication Date |
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| CN109433173A true CN109433173A (en) | 2019-03-08 |
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| CN201811553129.XA Withdrawn CN109433173A (en) | 2018-12-18 | 2018-12-18 | The method of Regenevating Waste Activated Carbon |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110394168A (en) * | 2019-06-27 | 2019-11-01 | 上海政宝环保科技有限公司 | A kind of hot recycling and reuse method of waste active carbon |
| CN111617754A (en) * | 2020-06-12 | 2020-09-04 | 江苏蓝必盛化工环保股份有限公司 | Active carbon in-situ adsorption regeneration method applied to high-concentration degradation-resistant wastewater treatment |
| CN111804090A (en) * | 2020-07-14 | 2020-10-23 | 芜湖良仕机械科技有限公司 | Spray type dust removal device |
| CN112619625A (en) * | 2020-11-25 | 2021-04-09 | 中国辐射防护研究院 | Re-impregnation method and device for radioactive iodine adsorption module adsorption material |
| CN114804104A (en) * | 2022-02-21 | 2022-07-29 | 江苏联兴成套设备制造有限公司 | Organic fermentation reinforced CO 2 Method for regenerating waste active carbon by activating pore-forming |
-
2018
- 2018-12-18 CN CN201811553129.XA patent/CN109433173A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394168A (en) * | 2019-06-27 | 2019-11-01 | 上海政宝环保科技有限公司 | A kind of hot recycling and reuse method of 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 |
| CN111617754A (en) * | 2020-06-12 | 2020-09-04 | 江苏蓝必盛化工环保股份有限公司 | Active carbon in-situ adsorption regeneration method applied to high-concentration degradation-resistant wastewater treatment |
| CN111804090A (en) * | 2020-07-14 | 2020-10-23 | 芜湖良仕机械科技有限公司 | Spray type dust removal device |
| CN112619625A (en) * | 2020-11-25 | 2021-04-09 | 中国辐射防护研究院 | Re-impregnation method and device for radioactive iodine adsorption module adsorption material |
| CN114804104A (en) * | 2022-02-21 | 2022-07-29 | 江苏联兴成套设备制造有限公司 | Organic fermentation reinforced CO 2 Method for regenerating waste active carbon by activating pore-forming |
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Application publication date: 20190308 |