CN102849784B - Plasma (orifice) gas phase reaction produces the method and apparatus of nano zine oxide - Google Patents
Plasma (orifice) gas phase reaction produces the method and apparatus of nano zine oxide Download PDFInfo
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- CN102849784B CN102849784B CN201210144198.1A CN201210144198A CN102849784B CN 102849784 B CN102849784 B CN 102849784B CN 201210144198 A CN201210144198 A CN 201210144198A CN 102849784 B CN102849784 B CN 102849784B
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Abstract
Plasma (orifice) gas phase reaction produces the method and apparatus of nano zine oxide, belong to metallurgy, chemical industry nanometer new material, the method is to input one of high frequency oxygen gas plasma or air plasma in reactor to plant, it is simultaneously entered metallic zinc steam, in reactor, oxygen in zinc fume and plasma reacts generation zinc oxide, control reaction temperature on the sublimation temperature of zinc oxide, obtain the high-temperature reaction product being made up of distillation state zinc oxide and plasma tail flame, this high-temperature reaction product enters in air cooler, cooled air quick refrigeration is at a temperature of 423K, form nano-zinc oxide powder, receive powder obtaining particle diameter through filter bag again is 15～50 nanometers, specific surface area is 40～80 meters2/ gram nano zine oxide finished product.The present invention has production process three-waste free pollution；Method is easy, production cost is low；Good product dispersibility, long-term storage are not reunited；The non-surface modification of powder body and modified, maintain the features such as the characteristic that original state nanoparticle should have.
Description
Technical field:
The present invention relates to the method and apparatus that a kind of plasma (orifice) gas phase reaction produces nano zine oxide, belong to metallurgical, chemical industry nanometer green wood
Material field.
Background technology:
Zinc oxide is a kind of by inorganic functional material that is extensive and that widely apply, and total consumption of the annual various zinc oxide of China about exists
More than 1200000 tons, due to reasons such as production technology, product quality, production costs, wherein the consumption of nano zine oxide is little,
Only accounting for about the 1% of total consumption, nano zine oxide refers to that particle size is less than the Zinc oxide powder of 100 nanometers (nm), owing to receiving
The superfine macro of rice powder grain and high-specific surface area so that it is there is surface and interfacial effect, quantum size effect, bulk effect
And macro quanta tunnel effect, so that nano zine oxide is in chemical industry, electronics, pottery, space flight, many necks such as optics, medicine
Territory obtains special, important using value, along with the progress of science and technology, it is contemplated that nano zine oxide answering in the total consumption of zinc oxide
3-5% is will increase to by ratio.
The preparation method of nano zine oxide substantially can be divided into the methods such as liquid phase method, solid phase method, vapor phase method, comprehensive crossover, current city
Most of nano zine oxide industrialization product on field, the method for production is all attended by liquid phase reactor and precipitation, is dried, forges
Single or many production link such as burning, its production process is wayward, and production cost is high, product quality be difficult to meet some special should
Requirement.
Plasma is the 4th state of material, is a kind of by the molecular ionized gas of molecule, atom, ion, electronics and light,
It appear that the labile state highly excited, the present invention utilizes in plasma oxygen in plasma state to carry out with the zinc fume of gaseous state
Oxidation reaction, under conditions of higher than zinc oxide sublimation temperature, it is thus achieved that distillation state zinc oxide, makes distillation state zinc oxide lower the temperature
Journey is formed the most completely in the case of solid crystal or nucleus not yet grow up, by cold air quick refrigeration thus maintain zinc oxide
Superfine micro-state of nucleus, final acquisition granularity high nano zine oxide superfine, active, compared with the prior art, the present invention
Have: production process three-waste free pollution；Production method is easy, without the production cycle, i.e. produce and get final product；Industrial production cost is low；Deng
Ion heat utilization efficiency is high；Product quality is high, purposes is wide, good dispersion, long-term storage are not reunited；Obtained powder body is without any table
Face modify and modified, maintain the features such as the characteristic that ecosystem nanoparticle should have.
The technology similar with the present invention has " the preparing zinc-oxide by use of plasma method Processes and apparatus " of Publication No. CN1083538A
Chinese patent, be disclosed that employing high-frequency plasma generator carries out roasting pyrolysis, pulverizes, refines basic zinc carbonate, from
And obtain nano level zinc oxide.Famous Tekna Plasma Systems Inc. of the U.S. (Tekna Plasma Systems Inc) provides
Plasma technique and equipment, prepared sizes are in nanometers such as the titanium oxide of 20～100 nanometers, zirconium oxide, aluminium oxide, silicon oxides
Powder body and spherical powder, but have no the technology similar to the present invention and Product Report.
Summary of the invention:
It is an object of the present invention to provide a kind of method that plasma (orifice) gas phase reaction produces nano zine oxide；Another of the present invention
Individual purpose is to provide a kind of plasma (orifice) gas phase reaction and produces the device of nano zine oxide.
The technical scheme of invention:
Plasma (orifice) gas phase reaction produces the method for nano zine oxide, it is characterised in that: the method is in a reactor, input
One of high frequency oxygen gas plasma or air plasma are planted, and are simultaneously entered the metallic zinc steam that temperature is 1130～1230K, zinc
Oxygen generation oxidation reaction in steam and plasma generates zinc oxide ZnO, the zinc oxide of generation and flame passes and the most anti-
It is fully oxidized that the zinc fume reacted device reactant outlet answered enters assisted oxidation room, controls the reaction temperature distillation temperature at zinc oxide
On degree, it is thus achieved that the high-temperature reaction product that temperature is 1973～2273K being made up of distillation state zinc oxide and plasma tail flame, should
High-temperature reaction product enters air cooler from assisted oxidation room, and the amount of being transfused to is high-temperature reaction product tolerance 20～the cooling of 50 times
Air quick refrigeration, at a temperature of 423K, forms nano-zinc oxide powder and the primary mixture of cooling air, primary mixture warp
Cross the outlet of air cooler, then receive powder acquisition nano zine oxide finished product through filter bag.
Plasma (orifice) gas phase reaction produces the process units of nano zine oxide, including reactor, air cooler, it is characterised in that:
Described reactor is textural plasma input port, zinc fume input port, reactant outlet；Air cooler is textural to be had
One assisted oxidation room, cooling air intake, cooler outlet.The reactant outlet ends of reactor is auxiliary with air cooler
Oxidizing chamber is helped to be connected.
Accompanying drawing illustrates:
Accompanying drawing is the process units structural representation of the present invention.
Accompanying drawing is labeled as 1-reactor, high-temperature refractory and metal cools water jacket manufactures；2-plasma input port；,
3-zinc fume input port；4-reactor reaction thing exports；5-high-temperature refractory lining；6-cooling jacket, 7-air cooler；,
8-assisted oxidation room；9-cooling air intake；10-cooler outlet.
Detailed description of the invention:
Embodiment 1: referring to the drawings shown in 1, the high frequency oxygen etc. that temperature is 4273～9273K that high-frequency plasma generator is produced
Gas ions is inputted by the plasma input port 2 of reactor, will come from zinc evaporator crucible or zinc re-distillation furnace temperature be 1130～
The metallic zinc steam of 1230K is inputted by zinc fume input port 3, now occurs to generate zinc oxide 2Zn+O in reactor2=2ZnO
Exothermic reaction, according to reaction equation, the amount of actually entering of oxygen controls oxygen plasma respectively by the 1.1～1.2 of theoretical requirement times
Body and the input quantity of zinc fume, reaction temperature controls on the sublimation temperature of 1973～2373K scope zinc oxide, and reaction generates
Zinc oxide and flame passes and a small amount of zinc fume reacted device reactant outlet 4 reacted the most completely enter the auxiliary of air coolers
After oxidizing chamber 8 is fully oxidized, form the high temperature that temperature is 1973～2273K being made up of distillation state zinc oxide and plasma tail flame
Product, this high-temperature reaction product enters air cooler, distillation state oxidation under centrifugal induced draught fan effect from assisted oxidation room
Zinc is formed in the case of solid crystal or nucleus not yet grow up in temperature-fall period the most completely, cooling air intake 9 entered
Input quantity be the cooling air quick refrigeration of high-temperature reaction product tolerance 20～50 times at a temperature of 423K, thus maintain zinc oxide
Superfine micro-state of nucleus, forms nano-zinc oxide powder and the primary mixture of cooling air, and primary mixture is cold through air
But after the outlet 10 of device, enter traditional powder collecting system through connecting pipeline, by centrifugal induced draught fan, then receive through filter bag receipts powder acquisition
Rice zinc oxide finished product.Finished product grain size scope be 15～50 nanometers, specific surface area be 40～80 meters2/ gram, loose density 0.22～0.25
Gram per centimeter3。
Embodiment 2: referring to the drawings shown in 1, the air plasma that temperature is 4273～8273K that high-frequency plasma generator is produced
Body is inputted by the plasma input port 2 of reactor, will come from zinc evaporator crucible or zinc re-distillation furnace temperature is 1130～1230K
Metallic zinc steam is inputted by zinc fume input port 3, now occurs to generate zinc oxide 2Zn+O in reactor2The heat release of=2ZnO is anti-
Should, according to reaction equation, the amount of actually entering of oxygen controls air plasma respectively by the 1.1～1.3 of theoretical requirement times and zinc steams
The input quantity of gas, reaction temperature controls on the sublimation temperature of 1973～2293K scope zinc oxide, reaction generate zinc oxide and
Flame passes and the zinc fume reacted the most completely on a small quantity, the abundant oxygen in assisted oxidation room 8 of reacted device outlet 4 entrance air cooler
After change, form the high-temperature reaction product that temperature is 1973～2193K being made up of distillation state zinc oxide and plasma tail flame, this height
Temperature product enters air cooler from assisted oxidation room, and distillation state zinc oxide forms solid knot in temperature-fall period the most completely
In the case of brilliant or nucleus is not yet grown up, cooling air intake 9 input quantity entered is high-temperature reaction product tolerance 20～50
Times cooling air quick refrigeration at a temperature of 423K, thus maintain superfine micro-state of zinc oxide nucleus, formed nano oxidized
Zinc powder and the primary mixture of cooling air, primary mixture, after the outlet 10 of air cooler, enters through connecting pipeline
Traditional powder collecting system, by centrifugal induced draught fan, then receives powder acquisition nano zine oxide finished product through filter bag.Finished product grain size scope be 20～
50 nanometers, specific surface area are 40～75 meters2/ gram, loose density 0.23～0.25 gram per centimeter3。
The reactor of the present invention, cooler are provided with cleaning eye, temperature measurer, and reaction temperature can be by controlling plasma generator
Operating condition, the coefficient of excess and the cooling jacket water temperature that control oxygen in oxidation reaction realize.Cooling air can be drawn by centrifugal
Blower fan, aerator or other gas transportation facilities provide.
Assisted oxidation room in accompanying drawing of the present invention and cooler are set to one, oxidizing chamber outlet downwards, in order to quickly clear up fouling
Or maintenance, it is possible to reactor and assisted oxidation room are set to overall or change oxidizing chamber Way out, its using method and a result
Consistent with described in description.Due to the preparation of Radio-frequency plasma torch and zinc fume be all the existing mature technology present invention no longer
Describe in detail.
Claims (5)
1. the method that plasma (orifice) gas phase reaction produces nano zine oxide, it is characterised in that: the method is in a reactor, defeated
Enter one of high frequency oxygen gas plasma or air plasma to plant, be simultaneously entered in metallic zinc steam, zinc fume and plasma
Oxygen generation oxidation reaction generate zinc oxide ZnO, the zinc oxide of generation and flame passes and a small amount of unreacted zinc fume are reacted
It is fully oxidized that the outlet of device reactant enters assisted oxidation room, controls reaction temperature on the sublimation temperature of zinc oxide, it is thus achieved that by rising
China's state zinc oxide and the high-temperature reaction product of plasma tail flame composition, it is cold that this high-temperature reaction product enters air from assisted oxidation room
But, in device, at a temperature of cooled air quick refrigeration to 423K, nano-zinc oxide powder and the primary mixture of cooling air are formed,
Receive powder through filter bag again and obtain nano zine oxide finished product.
Plasma (orifice) gas phase reaction the most according to claim 1 produces the method for nano zine oxide, it is characterised in that: described defeated
The control temperature of the metallic zinc steam entered is 1130～1230K.
Plasma (orifice) gas phase reaction the most according to claim 1 and 2 produces the method for nano zine oxide, it is characterised in that: by rising
China state zinc oxide and plasma tail flame composition high-temperature reaction product, be temperature be the product of 1973～2273K scopes.
Plasma (orifice) gas phase reaction the most according to claim 1 produces the method for nano zine oxide, it is characterised in that: cooling sky
Gas input quantity is 20～50 times of high-temperature reaction product tolerance.
5. plasma (orifice) gas phase reaction produces the process units of nano zine oxide, including reactor, air cooler, it is characterised in that:
Described reactor is textural plasma input port, zinc fume input port, reactant outlet；Air cooler is textural to be had
One assisted oxidation room, cooling air intake, cooler outlet；The reactant outlet ends of reactor is auxiliary with air cooler
Oxidizing chamber is helped to be connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210144198.1A CN102849784B (en) | 2012-05-10 | 2012-05-10 | Plasma (orifice) gas phase reaction produces the method and apparatus of nano zine oxide |
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| CN201210144198.1A CN102849784B (en) | 2012-05-10 | 2012-05-10 | Plasma (orifice) gas phase reaction produces the method and apparatus of nano zine oxide |
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| CN102849784A CN102849784A (en) | 2013-01-02 |
| CN102849784B true CN102849784B (en) | 2016-08-31 |
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| CN112939060B (en) * | 2021-02-05 | 2022-02-15 | 中国人民解放军战略支援部队航天***部装备部装备保障队 | Zinc oxide nano material and preparation method and application thereof |
| CN115863851B (en) * | 2022-12-01 | 2023-10-10 | 茂炜能源股份有限公司 | Energy storage device based on zinc sublimation and oxidation and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083538A (en) * | 1992-08-29 | 1994-03-09 | 中国科学院化工冶金研究所 | The preparing zinc-oxide by use of plasma method Processes and apparatus |
| CN101151214A (en) * | 2004-12-28 | 2008-03-26 | 纳米科技创造私人有限公司 | Nanostructured zinc oxide and a method of producing the same |
| EP1215174B1 (en) * | 1999-08-25 | 2009-09-30 | Showa Denko K.K. | Highly white zinc oxide fine particles and method for preparation thereof |
-
2012
- 2012-05-10 CN CN201210144198.1A patent/CN102849784B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083538A (en) * | 1992-08-29 | 1994-03-09 | 中国科学院化工冶金研究所 | The preparing zinc-oxide by use of plasma method Processes and apparatus |
| EP1215174B1 (en) * | 1999-08-25 | 2009-09-30 | Showa Denko K.K. | Highly white zinc oxide fine particles and method for preparation thereof |
| CN101151214A (en) * | 2004-12-28 | 2008-03-26 | 纳米科技创造私人有限公司 | Nanostructured zinc oxide and a method of producing the same |
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