CN101700489B - Method for preparing coal-based activated carbon for water treatment - Google Patents
Method for preparing coal-based activated carbon for water treatment Download PDFInfo
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- CN101700489B CN101700489B CN2009102603021A CN200910260302A CN101700489B CN 101700489 B CN101700489 B CN 101700489B CN 2009102603021 A CN2009102603021 A CN 2009102603021A CN 200910260302 A CN200910260302 A CN 200910260302A CN 101700489 B CN101700489 B CN 101700489B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003245 coal Substances 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000004913 activation Effects 0.000 claims abstract description 23
- 238000003763 carbonization Methods 0.000 claims abstract description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000003077 lignite Substances 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 238000005554 pickling Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000009656 pre-carbonization Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000008239 natural water Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 22
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- PUKLDDOGISCFCP-JSQCKWNTSA-N 21-Deoxycortisone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)C)(O)[C@@]1(C)CC2=O PUKLDDOGISCFCP-JSQCKWNTSA-N 0.000 description 1
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- FCYKAQOGGFGCMD-UHFFFAOYSA-N Fulvic acid Natural products O1C2=CC(O)=C(O)C(C(O)=O)=C2C(=O)C2=C1CC(C)(O)OC2 FCYKAQOGGFGCMD-UHFFFAOYSA-N 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002509 fulvic acid Substances 0.000 description 1
- 229940095100 fulvic acid Drugs 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009702 powder compression Methods 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a method for preparing coal-based activated carbon for water treatment, which can obtain coal-based activated carbon which has high strength and high wear resistance and better treating effect on industrial waste water with high content of natural water or organic matters through using different coal blending technology and controlling the conditions of carbonization and segmental activation on the premise of using no adhesives.
Description
Technical field
The present invention relates to a kind of method for preparing coal-based activated carbon for water treatment, particularly a kind of have good treatment effect and have high strength and the preparation method of the coal mass active carbon of high-wearing feature for natural water or the high trade effluent of content of organics.
Background technology
Active carbon is the most effective a kind of carbon material adsorbing material in modern society's life, industrial production and the enviromental protection and improvement.Because the progress of active carbon from coal production technology, the active carbon from coal properties of product have had very big improving, and along with the progress of industrial technology and gradually reducing of the forest reserves, active carbon from coal has demonstrated its stronger vitality.Along with the high speed development of world industry, the purposes of active carbon constantly enlarges, and demand is growing, high quality active carbon especially, and the demand on the market is more vigorous.At present, world's year is produced 1,000,000 tons of active carbon less thaies, and according to the interrelated data statistics, the demand in the international active carbon of a few years from now on market will increase with annual speed more than 5%.
Abroad, the production of active carbon mainly concentrates on the large-scale active carbon enterprise more than ten thousand tons of country such as the U.S., Russia, Southeast Asia, the scale of enterprise and strength are all very strong, the high-quality top-grade active carbon of main production, common active carbon is not produced basically owing to be subjected to the restriction of resource, labour and environmental protection.Yet, because the raising of continuous development, progress and the people's living standard of world developed countries such as the U.S., European Union makes them become Application of Brand Active Carbon big country in the world again.Although China is the big producing country of active carbon in the world, is not the production power of active carbon and uses big country.China is because scope of the enterprise is little, and it is poor to produce equipment, and technical merit is low, causes active carbon new product development difficulty, and product variety is few.
At present, active carbon is widely used in water treatment field, yet usually the coal mass active carbon of preparation is being performed poor aspect the improvement of the high trade effluent of natural water or content of organics, and application is restricted.
Summary of the invention
At above-mentioned technical problem, the purpose of this invention is to provide a kind of method for preparing coal-based activated carbon for water treatment, under the situation of not using bonding agent, obtain to have good treatment effect and have high strength and the coal mass active carbon of high-wearing feature for natural water or the high trade effluent of content of organics.
Purpose of the present invention realizes by following technical proposal.
A kind of method for preparing coal-based activated carbon for water treatment may further comprise the steps:
(1) batching:
Choose Datong District's weakly caking coal of ash content＜3 weight %, volatile matter 30～35 weight % respectively, and brown coal, above-mentioned raw coal is broken for 2～10 millimeters seed coal, dry to moisture＜8%, prepare burden according to following proportioning: Datong District's weakly caking coal 75～90 weight portions, brown coal 10～25 weight portions;
(2) pulverize
Batching in the step (1) is pulverized, crossed 200 mesh sieves;
(3) compacting
The powder that obtains in the step (2) is dry-pressing formed, for example block;
(4) pre-oxidation and carbonization
Utilizing temperature is that 250～270 ℃, pressure are the mobile hot-air of 0.5～0.6MPa, the formed body that obtains in the step (4) is carried out oxidation processes 5～10h, segmentation carbonization under oxygen free condition then: at first the arbitrary temp that is warming up between 150～300 ℃ with the heating rate of 2～5 ℃/min keeps 1～2h to carry out pre-carbonization, then 400～550 ℃ of further carbonizations 2～4 hours down;
(5) activation
Adopt two stage activation, at first in water vapour atmosphere in 800～1000 ℃ of down activation 1～3 hour, then in the mixed atmosphere that the flue gas of the water vapour of 10 volume %～30 volume % and 70 volume %～90 volume % constitutes in 800～950 ℃ of activation 10～40 hours down;
And optional purification step:
Remove impurity such as most of ash content in step (5) the gained active carbon and heavy metal by pickling, then washing.
The water vapour that consists of 15 volume %～20 volume % of mixed atmosphere described in the step (5) and the flue gas of 80 volume %～85 volume %.
Used acid is sulfuric acid or phosphoric acid in the acid pickling step.Pickling temperature is 10～80 ℃.
Preparation method of the present invention compared with prior art has following advantage:
(1) adopts different coal mixed technologies, utilize the characteristic of " the initial hole of feature " of different coals, improve the pore structure of product by the different blended mixing ratio.
(2), can regulate the adsorption capacity and the bulk density of active carbon by control pre-oxidation and carbonization condition.
(3) by atmosphere, the temperature and time of control branch stage activation, can further regulate and control distribution of pores, improve adsorption capacity larger molecular organics.
(4) need not to add bonding agent, can obtain intensity greater than 92% and the good activated carbon product of wearability by adopting homemade dry method roll-type cuber to carry out dry powder compression moulding.
The specific embodiment
Below with reference to embodiment the present invention is described more specifically.
Embodiment 1
Datong District's weakly caking coal and brown coal are broken for 4～9 millimeters seed coal respectively, dry, prepare burden: the weakly caking coal 80kg of Datong District, brown coal 20kg according to following proportioning to moisture＜8%; Pulverize, cross 200 mesh sieves, mix; With homemade WZ-500 dry method roll-type cuber (outstanding person of Xinji City, Hebei province reaches equipment Co., Ltd) the powder dry-pressing is become piece; With temperature is that 270 ℃, pressure are that the mobile hot-air of 0.6MPa carries out oxidation processes 6h to formed body, and the heating rate with 3 ℃/min under oxygen free condition is warming up to 250 ℃, and pre-carbonization 2h under this temperature is then at 450 ℃ of further carbonization 3h down; Adopt two stage activation, at first in water vapour atmosphere in 800 ℃ of activation 2 hours down, then in the mixed atmosphere that the flue gas of the water vapour of 20 volume % and 80 volume % constitutes in 800 ℃ of activation 25 hours down; Soak activation products with 20% aqueous sulfuric acid at normal temperatures, washing.
Embodiment 2
Datong District's weakly caking coal and brown coal are broken for 6～9 millimeters seed coal respectively, dry, prepare burden: the weakly caking coal 75kg of Datong District, brown coal 25kg according to following proportioning to moisture＜8%; Pulverize, cross 200 mesh sieves, mix; The powder dry-pressing becomes piece; With temperature is that 260 ℃, pressure are that the mobile hot-air of 0.5MPa carries out oxidation processes 10h to formed body, and the heating rate with 5 ℃/min under oxygen free condition is warming up to 250 ℃, and pre-carbonization 3h under this temperature is then at 450 ℃ of further carbonization 3h down; Adopt two stage activation, at first in water vapour atmosphere in 800 ℃ of activation 3 hours down, then in the mixed atmosphere that the flue gas of the water vapour of 15 volume % and 85 volume % constitutes in 800 ℃ of activation 30 hours down; Soak activation products with 20% aqueous sulfuric acid at normal temperatures, washing.
Embodiment 3
Datong District's weakly caking coal and brown coal are broken for 6～9 millimeters seed coal respectively, dry, prepare burden: the weakly caking coal 85kg of Datong District, brown coal 15kg according to following proportioning to moisture＜8%; Pulverize, cross 200 mesh sieves, mix; The powder dry-pressing becomes piece; With temperature is that 260 ℃, pressure are that the mobile hot-air of 0.6MPa carries out oxidation processes 8h to formed body, and the heating rate with 5 ℃/min under oxygen free condition is warming up to 250 ℃, and pre-carbonization 3h under this temperature is then at 450 ℃ of further carbonization 3h down; Adopt two stage activation, at first in water vapour atmosphere in 800 ℃ of activation 3 hours down, then in the mixed atmosphere that the flue gas of the water vapour of 20 volume % and 80 volume % constitutes in 800 ℃ of activation 20 hours down; Soak activation products with 20% aqueous sulfuric acid at normal temperatures, washing.
Through application experiment, the activated carbon product for preparing in the foregoing description is used to handle the high natural water of humic acid, fulvic acid, lignin and tannin content or the high industrial wastewater of larger molecular organics content has all been obtained good effect.
Claims (6)
1. method for preparing coal-based activated carbon for water treatment may further comprise the steps:
(1) batching:
Choose Datong District's weakly caking coal of ash content＜3 weight %, volatile matter 30～35 weight % respectively, and brown coal, above-mentioned raw coal is broken for 2～10 millimeters seed coal, dry to moisture＜8%, prepare burden according to following proportioning: Datong District's weakly caking coal 75～90 weight portions, brown coal 10～25 weight portions;
(2) pulverize
Batching in the step (1) is pulverized, crossed 200 mesh sieves;
(3) compacting
The powder that obtains in the step (2) is dry-pressing formed;
(4) pre-oxidation and carbonization
Utilizing temperature is that 250～270 ℃, pressure are the mobile hot-air of 0.5～0.6MPa, the formed body that obtains in the step (3) is carried out oxidation processes 5～10h, segmentation carbonization under oxygen free condition then: at first the arbitrary temp that is warming up between 150～300 ℃ with the heating rate of 2～5 ℃/min keeps 1～2h to carry out pre-carbonization, then at 400～550 ℃ of further carbonization 1～4h down;
(5) activation
Adopt two stage activation, at first in water vapour atmosphere in 800～1000 ℃ of down activation 1～3 hour, then in the mixed atmosphere that the flue gas of the water vapour of 10 volume %～30 volume % and 70 volume %～90 volume % constitutes in 800～950 ℃ of activation 10～40 hours down;
2. in step (3), described powder compaction is become block according to the process of claim 1 wherein.
3. behind activation step, also comprise purification step according to the process of claim 1 wherein.
4. according to the method for claim 3, wherein said purification step is pickling deliming, removal of impurities, then washing.
5. according to the method for claim 4, the used acid of wherein said pickling is sulfuric acid, and pickling temperature is 10～80 ℃.
6. according to the process of claim 1 wherein the flue gas of the water vapour that consists of 15 volume %～20 volume % and 80 volume %～85 volume % of mixed atmosphere described in the step (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102603021A CN101700489B (en) | 2009-12-14 | 2009-12-14 | Method for preparing coal-based activated carbon for water treatment |
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| CN2009102603021A CN101700489B (en) | 2009-12-14 | 2009-12-14 | Method for preparing coal-based activated carbon for water treatment |
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| CN101700489A CN101700489A (en) | 2010-05-05 |
| CN101700489B true CN101700489B (en) | 2011-04-27 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103466616B (en) * | 2013-08-23 | 2015-11-04 | 宁夏宝塔石化科技实业发展有限公司 | The preparation method of coal mass active carbon is reclaimed for organic solvent |
| CN105217625B (en) * | 2015-09-16 | 2018-05-04 | 中国矿业大学(北京) | The agglomerated activated carbon and preparation method that are prepared using weak caking coal as major ingredient coal blending and application |
| CN107381568B (en) * | 2017-08-31 | 2019-06-11 | 贺守印 | A kind of active carbon and preparation method thereof |
| CN107555429B (en) * | 2017-08-31 | 2019-09-13 | 大同市金盛豪达炭业有限责任公司 | A kind of preparation method of the coaly activated carbon of low-heavy metal content |
| CN107539987B (en) * | 2017-08-31 | 2019-08-20 | 贺守印 | A kind of preparation method of low iron coaly activated carbon |
| CN107416828A (en) * | 2017-08-31 | 2017-12-01 | 贺守印 | A kind of preparation method of magnesium oxide-based activated carbon |
| CN107416825A (en) * | 2017-08-31 | 2017-12-01 | 贺守印 | A kind of graininess coal mass active carbon and preparation method thereof |
| CN107337207A (en) * | 2017-08-31 | 2017-11-10 | 贺守印 | A kind of preparation method of low arsenic coal mass active carbon |
| CN111153401A (en) * | 2019-12-27 | 2020-05-15 | 济南国科医工科技发展有限公司 | Hydrothermal-stepped dual activation preparation method of hierarchical porous active carbon gas adsorption material |
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Effective date of registration: 20121108 Address after: 037301, Shanxi province Datong Datong county Party stayed in the Township Village left South Village Patentee after: Shanxi Huaqing Activated Carbon Group Co.,Ltd. Address before: 037103 Shanxi store in Zuoyun County of Datong Province town under Zhang jiefen Village East Zuoyun Xinpeng Activated Carbon Factory Patentee before: Kang Ming |
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Address after: Dang Liu Zhuang Xiang Dang Liu Zhuang Cun Nan, Yunzhou District, Datong City, Shanxi Province Patentee after: Shanxi Huaqing activated carbon group Limited by Share Ltd. Address before: 037301, Shanxi province Datong Datong county Party stayed in the Township Village left South Village Patentee before: Shanxi Huaqing Activated Carbon Group Co.,Ltd. |
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Address after: Dang Liu Zhuang Xiang Dang Liu Zhuang Cun Nan, Yunzhou District, Datong City, Shanxi Province Patentee after: Shanxi Huaqing environmental protection Co.,Ltd. Address before: Dang Liu Zhuang Xiang Dang Liu Zhuang Cun Nan, Yunzhou District, Datong City, Shanxi Province Patentee before: Shanxi Huaqing activated carbon group Limited by Share Ltd. |
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Denomination of invention: A method for preparing coal based activated carbon for water treatment Effective date of registration: 20230619 Granted publication date: 20110427 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Shuozhou branch Pledgor: Shanxi Huaqing environmental protection Co.,Ltd. Registration number: Y2023140000031 |
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Granted publication date: 20110427 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Shuozhou branch Pledgor: Shanxi Huaqing environmental protection Co.,Ltd. Registration number: Y2023140000031 |