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Reaction device and method for preparing nano zinc oxide

A nano-zinc oxide and reaction device technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, chemical industry, etc., can solve the problems of unstable quality, easy agglomeration, etc., and achieve reduced production costs, small particle size, and narrow distribution Effect

Active Publication Date: 2011-08-03
RUIAN SHUNFENG PLASTIC ADDITIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the above nano-zinc oxide preparation process still has problems such as unstable quality and easy agglomeration in the industrialization process of nano-zinc oxide

Method used

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  • Reaction device and method for preparing nano zinc oxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] combined with figure 1 The reaction device of the present invention is described. The device includes a first arc high temperature furnace 3, a second arc high temperature furnace 4, a reactor 5, a rotary drum type extreme cooler 6 and a collector 7 connected in sequence by pipelines. The first arc high temperature The furnace 3, the second electric arc high temperature furnace 4, the reactor 5, the rotary drum type extreme cooler 6 and the collector 7 are airtightly connected to the pipeline respectively; the bottom of the inner cavity of the first electric arc high temperature furnace 3 is provided with a first crucible 9 The bottom of the inner chamber of the first electric arc high temperature furnace 3 is provided with air intake passages 11 and 12 with control valves communicating with the outside world, and the inner chamber bottom of the second electric arc high temperature furnace 4 is provided with a second crucible 10 , a channel 13 with a valve is provided b...

Embodiment 2

[0085] Fill liquid nitrogen into the drum of the drum-type extreme cooler, and start the extreme cooler with a rotating speed of 250r / min. A 23kg weight zinc ingot is placed in the first crucible, and the valve between the first crucible and the second crucible is opened. The device is evacuated to make the vacuum degree 150Pa, and then filled with nitrogen and argon in sequence, and the first crucible is heated to 600°C under the protection of argon, and the molten zinc ingot flows into the second crucible after melting, and is heated to 700°C to obtain Zinc vapor, zinc vapor is filled into the reactor with argon as the carrier gas, and high-purity oxygen is filled from the reactor gas inlet, and the reactor is heated to a temperature of 900°C. The volume flow rate of argon gas is 27 liters / hour, the volume flow rate of high-purity oxygen gas is 100 liters / hour, the volume flow ratio of argon gas and high-purity oxygen gas is 27:100, and nano ZnO is put into the reactor 2Rod...

Embodiment 3

[0087] Fill liquid nitrogen into the drum of the rotary-drum-type ultra-cooler, and start the ultra-cooler at a speed of 175 r / min. A 23kg weight zinc ingot is placed in the first crucible, and the valve between the first crucible and the second crucible is opened. The device is evacuated to a vacuum degree of 200 Pa, and then filled with nitrogen and argon in sequence, and the first crucible is heated to 600°C under the protection of argon, and the melt flows into the second crucible after the zinc ingot is melted, and is heated to 800°C to obtain Zinc vapor, zinc vapor is filled into the reactor with argon as the carrier gas, and high-purity oxygen is filled from the reactor gas inlet, and the reactor is heated to a temperature of 900°C. The volume flow rate of argon gas is 30 liters / hour, the volume flow rate of high-purity oxygen gas is 100 liters / hour, the volume flow ratio of argon gas and high-purity oxygen gas is 30:100, and nano ZnO is put into the reactor 2 Rod-shap...

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Abstract

The invention discloses a reaction device for preparing nano zinc oxide. The device comprises a first electric arc high temperature furnace, a second electric arc high temperature furnace, a reactor, a rotor drum type cryostat and a collector which are connected through pipelines sequentially. The invention also discloses a preparation method of the nano zinc oxide by using the reaction device. The process for producing the nano zinc oxide is energy-saving; and because electric energy is used as a heat source for melting zinc, the energy loss is low. Compared with the traditional process, theprocess saves energy by 50 percent, so that the production cost of the zinc oxide is reduced. The electric energy is used as an energy source for melting a zinc ingot and high-frequency induction substitutes the traditional coal or natural gas, so the production process of the zinc oxide is changed into a pollution-free production process; and the whole production process is performed under a sealing condition, so 'three wastes' (waste water, waste gas and waste residue) are not generated and the requirement of green chemistry is met.

Description

1. Technical field [0001] The invention relates to a reaction device of nano zinc oxide and a method for preparing nano zinc oxide using the reaction device. 2. Background technology [0002] Nano zinc oxide, like other nano oxides, is one of the raw materials for preparing nano materials, but nano zinc oxide is different from other nano oxides. Nano zinc oxide not only has extremely fine particles, but also has a large specific surface area, and has the properties of nano oxides. Moreover, there are many nano-morphologies of nano-zinc oxide, so that nano-zinc oxide has many special properties, which makes the application field of nano-zinc oxide more extensive. Specific application areas are: [0003] (1) Daily chemicals and medicines [0004] Nano zinc oxide is non-toxic, tasteless, non-decomposing, non-deteriorating, good stability, non-irritating to the skin, and has the functions of astringent, anti-inflammatory, anti-wrinkle and protection, so nano-zinc oxide is adde...

Claims

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Application Information

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IPC IPC(8): C01G9/03B82Y40/00
CPCY02P20/10
Inventor 池仁锋
Owner RUIAN SHUNFENG PLASTIC ADDITIVES
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