Apparatus and method of producing inorganic powder

Patent metadata

Field	Value
Publication number	US-12042774-B2
Application number	US-202318469241-A
Country	US
Kind code	B2
Filing date	Sep 18, 2023
Priority date	Nov 10, 2021
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

Provided are an apparatus for producing inorganic powder, and a method of producing inorganic powder by using such. The apparatus includes a vaporization part where a condensed-phase precursor is vaporized to obtain a gas-phase precursor, a partial precipitation part where the gas-phase precursor obtained in the vaporization part is partially precipitated to a condensed phase, and a reaction part where the gas-phase precursor remaining after being partially precipitated to a condensed phase in the partial precipitation part reacts with a reaction gas to obtain inorganic powder. An equilibrium vapor pressure of the gas-phase precursor in the partial precipitation part is lower than a vapor pressure of the gas-phase precursor obtained in the vaporization part, and an equilibrium vapor pressure of the precursor in the reaction part is equal to or higher than a vapor pressure of the gas-phase precursor partially precipitated to a condensed phase in the partial precipitation part.

First claim

What is claimed is:

1. An apparatus for producing inorganic powder, the apparatus comprising:
a precursor supplier comprising a channel; and
a reaction part where a gas-phase precursor supplied from the precursor supplier reacts with a reaction gas to obtain the inorganic powder,
wherein the precursor supplier comprises a vaporization part where a condensed-phase precursor is vaporized to obtain the gas-phase precursor, and a partial precipitation part where the gas-phase precursor obtained in the vaporization part is partially precipitated to a condensed phase,
wherein the channel of the precursor supplier is configured in such a manner that a fluid passes sequentially through the vaporization part and the partial precipitation part and then is discharged to the reaction part,
wherein the gas-phase precursor remaining after being partially precipitated to the condensed phase in the partial precipitation part is injected into the reaction part,
wherein an equilibrium vapor pressure of the precursor in the partial precipitation part is lower than a vapor pressure of the gas-phase precursor obtained in the vaporization part, and
wherein an equilibrium vapor pressure of the precursor in the reaction part is equal to or higher than a vapor pressure of the gas-phase precursor partially precipitated to the condensed phase in the partial precipitation part,
wherein the channel of the precursor supplier includes a first downward channel, a second downward channel, and an upward channel,
wherein the vaporization part comprises a precursor vaporizer provided in a region through which the fluid moving downward along the first downward channel passes, the first downward channel being heated by a heat source, and
wherein the partial precipitation part is provided between the upward channel extending from the first downward channel and the second downward channel extending to the reaction part, the first downward channel comprising the precursor vaporizer.

2. The apparatus of claim 1 , wherein the downward and upward channels are provided adjacent to each other in parallel.

3. The apparatus of claim 1 , wherein a temperature of the vaporization part is maintained higher than a temperature of the partial precipitation part.

4. The apparatus of claim 1 , wherein a temperature of the reaction part is maintained equal to or higher than the temperature of the partial precipitation part.

5. The apparatus of claim 1 , further comprising a quenching gas inlet for injecting a quenching gas into the partial precipitation part.

6. The apparatus of claim 1 , wherein the partial precipitation part comprises a precipitation induction member for inducing precipitation of the gas-phase precursor.

7. The apparatus of claim 1 , wherein the inorganic powder comprises metal powder.

8. The apparatus of claim 1 , wherein the inorganic powder comprises ceramic powder.

9. The apparatus of claim 1 , wherein the precursor comprises one or more of metal acetate, metal bromide, metal carbonate, metal chloride, metal fluoride, metal hydroxide, metal iodide, metal nitrate, metal oxide, metal phosphate, metal silicate, metal sulfate, and metal sulfide.

10. The apparatus of claim 1 , wherein the inorganic powder comprises nickel (Ni), copper (Cu), silver (Ag), iron (Fe), aluminum (Al), cobalt (Co), platinum (Pt), gold (Au), tin (Sn), or an alloy thereof.

11. The apparatus of claim 1 , wherein the inorganic powder comprises an oxide, nitride, or carbide of Ni, Cu, Ag, Fe, Al, Co, Pt, Au, or Sn.

12. An apparatus for producing inorganic powder, the apparatus comprising:
a precursor supplier comprising a channel; and
a reaction part where a gas-phase precursor supplied from the precursor supplier reacts with a reaction gas to obtain the inorganic powder,
wherein the precursor supplier comprises a vaporization part where a condensed-phase precursor is vaporized to obtain the gas-phase precursor, and a partial precipitation part where the gas-phase precursor obtained in the vaporization part is partially precipitated to a condensed phase,
wherein the channel of the precursor supplier is configured in such a manner that a fluid passes sequentially through the vaporization part and the partial precipitation part and then is discharged to the reaction part,
wherein the gas-phase precursor remaining after being partially precipitated to the condensed phase in the partial precipitation part is injected into the reaction part,
wherein a temperature of the vaporization part is maintained higher than a temperature of the partial precipitation part, and
wherein a temperature of the reaction part is maintained equal to or higher than the temperature of the partial precipitation part,
wherein the channel of the precursor supplier includes a first downward channel, a second downward channel, and an upward channel,
wherein the vaporization part comprises a precursor vaporizer provided in a region through which the fluid moving downward along the first downward channel passes, the first downward channel being heated by a heat source, and
wherein the partial precipitation part is provided between the upward channel extending from the first downward channel and the second downward channel extending to the reaction part, the first downward channel comprising the precursor vaporizer.

Assignees

• Korea Inst Ind Tech

Inventors

• Yang Seung Min
• Kim Kyung Hoon
• Kim Gun Hee
• Jeong Young Kyu
• Kwon O Hyung
• Mo Chan Bin
• Jo Yong Su
• Park Hye Min
• Jin Gwang Hwa

Classifications

• B01J12/005

  carried out at high temperatures, e.g. by pyrolysis · CPC title

• B01J19/24

  Stationary reactors without moving elements inside (B01J19/08, B01J19/26 take precedence; with stationary particles B01J8/02) · CPC title

• B22F9/16

  using chemical processes · CPC title

• B22F3/003

  Apparatus, e.g. furnaces (in general F27B) · CPC title

• C04B35/56

  based on carbides {or oxycarbides (containing free metal binder C22C29/00)} · CPC title