CN104923162A - Molded active carbon free from bonding - Google Patents
Molded active carbon free from bonding Download PDFInfo
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- CN104923162A CN104923162A CN201510409004.XA CN201510409004A CN104923162A CN 104923162 A CN104923162 A CN 104923162A CN 201510409004 A CN201510409004 A CN 201510409004A CN 104923162 A CN104923162 A CN 104923162A
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- active carbon
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- carbonaceous mesophase
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Abstract
The invention provides molded active carbon free from bonding with a good purification function. The molded active carbon free from bonding is characterized in that the composition comprises biomass derived carbonaceous mesophase powders and lignocelluloses matter powders which are used as main raw materials, 1-3% of anion powders and 1-5% of nanometer Ag powders, and the molded active carbon is prepared through the steps of mixing, ball milling, extrusion forming and carbonizing. The molded active carbon prepared by adopting the technology has the advantages that glue is not need to be added for bonding, the activity is high, the specific surface area reaches over 100 square meters /g, and the iodine sorption value reaches over 1050 mg /g.
Description
Technical field
The invention belongs to a kind of domestic environment purified product, relate to a kind of the free bonding pressed active carbon and the manufacture method thereof that can be used for indoor air purification or Water warfare specifically.
Background technology
The injury that room air pollution likely causes to human body can not be ignored, investigation according to the parties concerned shows, in state-owned 72% family's IAQ defective, annual 11.1 ten thousand people are dead because of room air pollution, reach 304 people every day, therefore the improvement of room air pollution is very urgent.Harmful substance in room air mainly comprises formaldehyde, benzene, radon, flue dust etc.
The development of civil version free bonding pressed active carbon sees Shanghai Communications University's patent report (patent No.: 200510112222.3) the earliest.Free bonding pressed active carbon generate principle be in carbonisation biomass derived Carbonaceous mesophase powder from carbonization, self bonding effect, make pressed active carbon have very high intensity, thus do not need additionally to add binding agent.Remain the bigger serface of pressed active carbon, absorption property is strong, and hardness is large.
Pressed active carbon is up-to-date active carbon developing direction.As its name suggests, the shape and size of this active carbon can design, and according to the demand of practical application, with specific shape and size, save space as much as possible, play the applicative efficiency of active carbon.The size of pressed active carbon is general all larger, and strength ratio is higher, can realize no dust pollution, also more easily changes and regenerates.Can say, by forming, the originally all shortcoming of active carbon can be resolved.So pressed active carbon will replace current powdery and granular active carbon gradually, and becomes the leading products of active carbon.
The technology of preparing of pressed active carbon, also among development, but all belongs to bonding technology substantially.So-called bonding technology is exactly shaping for the active carbon adhesive bond of powdery, obtain a shaping base substrate, and then carbonization-activation obtains pressed active carbon.This technological principle is fairly simple, but in the real process implemented, has suitable difficulty.Because around this principle, if bonding agent consumption is few, adhesive strength between activated carbon granule is inadequate, the insufficient strength of base substrate and the last pressed active carbon formed can be caused, if but bonding agent consumption is many, so activated carbon granule will by the embedding of bonding agent entirety, and its loose structure cannot play a role like this; If the wellability between bonding agent and activated carbon granule is not good, can insufficient strength be caused too, but wellability is good, then bonding agent can be caused to penetrate into the internal surface of hole of activated carbon granule, fill out and sealed loose structure.So this moulding process, to selection and the consumption of bonding agent, has very high requirement, and must coordinate carbonization and the activating process of back segment.On the other hand, because this technique has introduced different carbon, so the contraction of the carbon that powdered activated carbon and bonding agent are formed is different in carbonisation, this will cause original trickle form to change, and even forms some defects.
Some the so-called pressed active carbon products occurred in the market are the base substrate obtained after resin bonding in fact.This blank density is large, does not have pore structure, loses the original absorption of active carbon, filtering function.
Exempt from the high strength that from carbonization, self-adhesive achieves formed body of molding bonded active carbon by utilizing the derived carbonaceous mesophase spherule powder of himself biomass starting material in carbonisation, and do not need to add adhesive.
Based on above-mentioned advantage, free bonding pressed active carbon can be widely used in indoor air purification, purification of water quality, desulphurization denitration, and the sewage disposal containing a small amount of impurity, low-concentration organic, of many uses.
Summary of the invention
An object of the present invention is to propose a kind of free bonding pressed active carbon, containing negative ion powder and properties of Ag nanoparticles prepared by flow-levitation method in the constituent of this product, energy sustained release anion, can accelerate to adsorb and decompose the toxic and harmfuls such as the formaldehyde in room air, can also antibacterial sterilization, sedimentation dust, can solve three large subject matters of above-mentioned room air pollution, can be used for indoor air purification or drink water purifying.
The present invention solve the problem adopt technical scheme:
A kind of free bonding pressed active carbon, its constituent includes biomass derived Carbonaceous mesophase powder, lignocellulosic materials, negative ion powder, properties of Ag nanoparticles prepared by flow-levitation method, the percentage by weight of each constituent is, biomass derived Carbonaceous mesophase powder 25-60%, lignocellulosic materials 20-70%, negative ion powder 1-5%, properties of Ag nanoparticles prepared by flow-levitation method 1%-5%.
The raw materials of the biomass derived Carbonaceous mesophase powder that the generation of this free bonding pressed active carbon adopts can be the mixture of one or more of wood chip, stalk, pomace.
Meanwhile, propose a kind of preparation method producing above-mentioned free bonding pressed active carbon, comprise the following steps:
Step 1: batching, is mixed to form mixture in proportion by biomass derived Carbonaceous mesophase powder, lignocellulosic materials, negative ion powder, properties of Ag nanoparticles prepared by flow-levitation method;
Step 2: ball milling, is placed in ball milling 10-20h in ball mill and prepares slurry by the mixture in step 1; Add water in ball mill during ball milling, wherein the weight of water accounts for the 50%-70% of solid mixture weight;
Step 3: extruded, dropped into by the mud through ball milling and set mould, by required size extrusion molding active carbon green compact, squeeze pressure is 5-9 ton;
Step 6: dry, by cellular activated carbon green compact infrared drying or naturally dry in the shade and obtain dry body, drying time 10-20h;
Step 7: charing, dry body is inserted vacuum calcining in the microwave activation stove vacuumized, calcining heat is 600-700 DEG C, calcination time 25-50 hour.
2. the preparation method of free bonding pressed active carbon as described in claim 1, is characterized in that: the raw materials of described biomass derived Carbonaceous mesophase powder is the mixture of one or more of wood chip, stalk, pomace.
Beneficial effect of the present invention: first, the present invention for primary raw material, is current Household therapeutic air-polluting preferred materials with biomass derived Carbonaceous mesophase powder, lignocellulosic materials; Avoid and add various different binding agent in active carbon forming process, affect the adsorption capacity of active carbon, the standby pressed active carbon of this legal system is without the need to adding gluing knot, active high, specific area 1000 square meter/more than g, more than iodine sorption value 1050mg/g.
Secondly, free bonding pressed active carbon of the present invention adds negative ion powder in existing free bonding pressed active carbon component, properties of Ag nanoparticles prepared by flow-levitation method is raw material, can effective clean air, antibacterial sterilization, suction dust, and the blood circulation being conducive to human body, have health-care effect to human body.
Again, production technology of the present invention is simple, and raw material obtains conveniently, and ratio of briquetting is high, is conducive to saving production cost.
Free bonding pressed active carbon energy sustained release anion provided by the invention, can accelerate to adsorb and decompose the toxic and harmfuls such as the formaldehyde in room air, can also antibacterial sterilization, and sedimentation dust, is expected to be widely used in indoor air purification field.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details.
Embodiment 1
Step 1: batching.By biomass derived Carbonaceous mesophase powder 60kg more than 300 orders, more than 200 orders lignocellulosic materials powder 35kg, negative ion powder 3kg, properties of Ag nanoparticles prepared by flow-levitation method 2kg mix, with material machine in fully stir 15 minutes.
Step 2: ball milling.The raw material mixed in step 1 is poured in ball mill, and the water adding 60kg in ball mill carries out ball milling mixed preparing slurry, Ball-milling Time 20h.
Step 3: extruded, dropped in the extruder barrel preparing mould by the mud after ball milling and extrude cellular activated carbon green compact, mould is of a size of 100*100*100mm, and squeeze pressure is 9 tons.
Step 4: dry, by green compact infrared drying or naturally dry in the shade, time 15h.
Step 5: carbonization, inserts dry body in vacuum microwave activation furnace and vacuumizes calcining.Calcining heat is 650 DEG C, 30 hours time.
Embodiment 2
Step 1: batching.By biomass derived Carbonaceous mesophase powder 50kg more than 300 orders, lignocellulosic materials powder 40kg more than 200 orders, negative ion powder 5kg, properties of Ag nanoparticles prepared by flow-levitation method 5kg mixes, with material machine in fully stir 15 minutes.
Step 2: ball milling.The raw material mixed in step 1 is joined in ball mill, and the water adding 60kg in ball mill carries out ball milling mixed preparing slurry, Ball-milling Time 15h.
Step 3: extruded, the mud section perfected dropped in the extruder barrel preparing mould and extrude cellular activated carbon green compact, mould is of a size of 100*100*100mm, and squeeze pressure is 8 tons.
Step 4: dry, by green compact infrared drying or naturally dry in the shade, time 15h.
Step 5: carbonization, inserts dry body in vacuum microwave activation furnace and vacuumizes calcining.Calcining heat is 600 DEG C, 35 hours time.
Embodiment 3
Step 1: batching.By biomass derived Carbonaceous mesophase powder 60kg more than 300 orders, lignocellulosic materials powder 35kg more than 200 orders, properties of Ag nanoparticles prepared by flow-levitation method 5kg mixes, with material machine in fully stir 15 minutes.
Step 2: ball milling.The raw material mixed in step 1 is joined in ball mill, and the water adding 65kg in ball mill carries out ball milling mixed preparing slurry, Ball-milling Time 10h.
Step 3: extruded, dropped in the extruder barrel preparing mould by mud good for ball milling and extrude cellular activated carbon green compact, mould is of a size of 100*100*100mm, and squeeze pressure is 9 tons.
Step 4: dry, by green compact infrared drying or naturally dry in the shade, time 18h.
Step 5: calcining, inserts dry body in vacuum microwave activation furnace and vacuumizes calcining.Calcining heat is 650 DEG C, 38 hours time.
By doing the adsorption test of bacterium, virus, find that the present invention exempts from molding bonded active carbon and has obvious superiority than active powdered carbon.
Result of the test:
Respectively in Example 1 to embodiment 3 exempt from molding bonded activated carbon block and active powdered carbon is tested at the virtual space of 10m3, detection method detects according to air quality standard GB/T18883-2002, and its absorption property result exempting from molding bonded activated carbon block is as follows:
Claims (2)
1. the preparation method of a free bonding pressed active carbon, the constituent of described free bonding pressed active carbon includes biomass derived Carbonaceous mesophase powder, lignocellulosic materials powder, negative ion powder, properties of Ag nanoparticles prepared by flow-levitation method, the percentage by weight of each constituent is, biomass derived Carbonaceous mesophase powder 25%-60%, lignocellulosic materials powder 20-75%, negative ion powder 1-5%, properties of Ag nanoparticles prepared by flow-levitation method 1%-5%, is characterized in that: preparation method comprises the following steps:
Step 1: batching, is mixed to form mixture in proportion by biomass derived Carbonaceous mesophase powder, lignocellulosic materials, negative ion powder, properties of Ag nanoparticles prepared by flow-levitation method;
Step 2: ball milling, is placed in ball milling 10-20h in ball mill and prepares slurry by the mixture in step 1; Add water in ball mill during ball milling, wherein the weight of water accounts for the 50%-70% of solid mixture weight;
Step 3: extruded, dropped into by the mud through ball milling and set mould, by required size extrusion molding active carbon green compact, squeeze pressure is 5-9 ton;
Step 6: dry, by cellular activated carbon green compact infrared drying or naturally dry in the shade and obtain dry body, drying time 10-20h;
Step 7: charing, dry body is inserted vacuum calcining in the microwave activation stove vacuumized, calcining heat is 600-700 DEG C, calcination time 25-48 hour.
2. the preparation method of free bonding pressed active carbon as described in claim 1, is characterized in that: the raw materials of described biomass derived Carbonaceous mesophase powder is the mixture of one or more of wood chip, stalk, pomace.
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| CN201510409004.XA CN104923162A (en) | 2015-07-13 | 2015-07-13 | Molded active carbon free from bonding |
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| CN201510409004.XA CN104923162A (en) | 2015-07-13 | 2015-07-13 | Molded active carbon free from bonding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469547A (en) * | 2017-09-15 | 2017-12-15 | 江苏科力特环保科技有限公司 | A kind of negative oxygen ion activated carbon |
| CN109923066A (en) * | 2016-12-21 | 2019-06-21 | 株式会社吴羽 | Spheric active carbon and its manufacturing method |
| CN110302828A (en) * | 2019-05-14 | 2019-10-08 | 上海交通大学 | Zeolite-porous carbon-photocatalyst trielement composite material, preparation method and wastewater treatment equipment |
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| CN1792785A (en) * | 2005-12-29 | 2006-06-28 | 上海交通大学 | Process for preparing forming active carbod by biomess derived carbonaceous medium phase |
| WO2011106060A2 (en) * | 2010-02-26 | 2011-09-01 | Kx Technologies Llc | Method of making a filter media with an enhanced binder |
| CN103432991A (en) * | 2013-08-14 | 2013-12-11 | 刘大敏 | Nano-silver honeycomb-type purification activated carbon and preparation method thereof |
| CN103588202A (en) * | 2013-11-18 | 2014-02-19 | 曹南萍 | Manufacturing method for active carbon/tourmaline composite material and product manufactured according to manufacturing method |
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2015
- 2015-07-13 CN CN201510409004.XA patent/CN104923162A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792785A (en) * | 2005-12-29 | 2006-06-28 | 上海交通大学 | Process for preparing forming active carbod by biomess derived carbonaceous medium phase |
| WO2011106060A2 (en) * | 2010-02-26 | 2011-09-01 | Kx Technologies Llc | Method of making a filter media with an enhanced binder |
| CN103432991A (en) * | 2013-08-14 | 2013-12-11 | 刘大敏 | Nano-silver honeycomb-type purification activated carbon and preparation method thereof |
| CN103588202A (en) * | 2013-11-18 | 2014-02-19 | 曹南萍 | Manufacturing method for active carbon/tourmaline composite material and product manufactured according to manufacturing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109923066A (en) * | 2016-12-21 | 2019-06-21 | 株式会社吴羽 | Spheric active carbon and its manufacturing method |
| CN109923066B (en) * | 2016-12-21 | 2022-06-28 | 株式会社吴羽 | Spherical activated carbon and method for producing same |
| CN107469547A (en) * | 2017-09-15 | 2017-12-15 | 江苏科力特环保科技有限公司 | A kind of negative oxygen ion activated carbon |
| CN110302828A (en) * | 2019-05-14 | 2019-10-08 | 上海交通大学 | Zeolite-porous carbon-photocatalyst trielement composite material, preparation method and wastewater treatment equipment |
| CN110302828B (en) * | 2019-05-14 | 2020-10-27 | 上海交通大学 | Zeolite-porous carbon-photocatalyst ternary composite material, preparation method thereof and wastewater treatment device |
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Application publication date: 20150923 |