# US 9,038,409 B2 · Apparatus for treating air by using porous organic-inorganic hybrid materials as an absorbent

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- Number: US 9,038,409 B2
- Document ID: US9038409B2
- Status: Granted
- Kind: B2
- Application number: 12/629,841
- Filed: 2009-12-02
- Published: 2011-03-24
- Granted: 2015-05-26
- Earliest claimed: 2009-09-21
- Assignees: Korea Research Institute of Chemical Technology
- Applicants: Young Kyu Hwang; Jong-San Chang; Dong Won Hwang; Ji Sun Lee
- Inventors: Young Kyu Hwang; Jong-San Chang; Dong Won Hwang; Ji Sun Lee
- Web page: https://patentgrep.com/patent/US9038409B2

## CPC

- F24F 3/1411: {by absorbing or adsorbing water, e.g. using an hygroscopic desiccant}
- F24F 2203/1036: Details
- F24F 2203/1072: comprising two rotors
- F28D 19/041: {with axial flow through the intermediate heat-transfer medium}
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)

## Abstract

The present disclosure provides an apparatus for treating air by using porous organic-inorganic hybrid materials as an absorbent, which comprises an inlet passage for receiving air from outside; a dehumidifying part comprising porous organic-inorganic hybrid materials as an adsorbent for removing moisture from the air receiving through the inlet passage; a regenerating unit for regenerating the adsorbent of the dehumidifying part; and an outlet passage for discharging the dehumidified air to outside. Said apparatus preferably comprises two dehumidifying parts of two-bed switching type and two switch valves, wherein said two dehumidifying parts are alternatively operated for dehumidification and for regeneration by switching said switch valves to convert direction of air flow.

## Claims

### Claim 1

An apparatus for treating air by using porous organic-inorganic hybrid materials as an absorbent, comprising:
an inlet passage for receiving air from outside,
a dehumidifying part comprising an adsorbent for removing moisture from the air received through the inlet passage,
a regenerating unit for regenerating the adsorbent of the dehumidifying part, and
an outlet passage for discharging the dehumidified air to outside;
wherein the adsorbent comprises porous organic-inorganic hybrid materials;
which are selected from the group consisting of compounds or their hydrates represented by the following formula:
M3X(H2O)2O[C6Z4-yZ′y(CO2)2]3(M=Cu, Fe, Mn, Cr, V, Al, Ti, Zr or Mg; X=Cl, Br, I, F or OH; Z or Z′=H, NH2, Br, I, NO2 or OH; 0≦y≦4); or
M3O(H2O)2X[C6Z3-yZ′y—(CO2)3]2(M=Cu, Fe, Mn, Cr, V, Al, Ti, Zr or Mg; X=Cl, Br, I, F or OH; Z or Z′=H, NH2, Br, I, NO2 or OH; 0≦y≦3); or
M3O (H2O)2X1-y(OH)y[C6H3—(CO2)3]2(0≦y≦1; M=Cu, Fe, Mn, Cr, V, Al, Ti, Zr or Mg; X=Cl, Br, I or F); or
M3X1-y(OH)y(H2O)2O[C6H4(CO2)2]3(0≦y≦1; M=Cu, Fe, Mn, Cr, V, Al, Ti, Zr or Mg; X=Cl, Br, I or F); or
M6O4(OH)4[C6Z4-yZ′y(CO2)2]12(M=Ti, Sn or Zr; Z or Z′=H, NH2, Br, I, No2 or OH; 0≦y≦4); or
M2(dhtp)(H2O)2(M=Ni, Co, Mg, Mn and Fe; dhtp=2,5-dihydroxyterephthalic acid).

### Claim 2 (depends on 1)

The apparatus for treating air of claim 1, comprising:
two two-bed switching dehumidifying parts, and
two switch valves,
wherein two two-bed switching dehumidifying parts may operate alternately for dehumidification and for regeneration using switch valves converting direction of air flow.

### Claim 3 (depends on 1)

The apparatus for treating air of claim 1, wherein the porous organic-inorganic hybrid materials may adsorb at least 0.1 g of moisture per 1 g of the porous organic-inorganic hybrid materials.

### Claim 4 (depends on 1)

The apparatus for treating air of claim 1, wherein the porous organic-inorganic hybrid materials comprise at least one metal component selected from the group consisting of Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mg, Ca, Sr, Ba, Al, Ga, In, Tl, Si, Ge, Sn, Pb, As, Sb and Bi.

### Claim 5 (depends on 1)

The apparatus for treating air of claim 1, wherein the porous organic-inorganic hybrid materials comprise at least one metal component selected from the group consisting of Ag(I) , Cu(II or I) and Ni(II), having antibacterial activity.

### Claim 6 (depends on 1)

The apparatus for treating air of claim 1, wherein the porous organic-inorganic hybrid materials comprise copper terephthalate, iron terephthalate, manganese terephthalate, chromium terephthalate, vanadium terephthalate, aluminum terephthalate, titanium terephthalate, zirconium terephthalate, magnesium terephthalate, copper benzenetricarboxylate, iron benzenetricarboxylate , manganese benzenetricarboxylate, chromium benzenetricarboxylate, vanadium benzenetricarboxylate, aluminum benzenetricarboxylate, titanium benzenetricarboxylate, zirconium benzenetricarboxylate, magnesium benzenetricarboxylate, iron naphthalenedicarboxylate, chromium naphthalenedicarboxylate, aluminum naphthalenedicarboxylate, nickel dihydroxyterephthalate, cobalt dihydroxyterephthalate, magnesium dihydroxyterephthalate, manganese dihydroxyterephthalate, iron dihydroxyterephthalate, iron benzenetribenzoate, chromium benzenetribenzoate, aluminum benzenetribenzoate, titanium benzenetribenzoate, a derivative thereof, a solvate thereof, a hydrate thereof or a combination of any two or more thereof.

### Claim 7 (depends on 1)

The apparatus for treating air of claim 1, wherein the organic ligand is a compound containing at least one functional group selected from the group consisting of carbonic acid group (—CO3H), anion group of carbonic acid (—CO3-), carboxyl group, or anion group of carboxylic acid, amino group (—NH2), imino group ( ) amide group (—CONH2), sulfonic acid group (—SO3H), anion group of sulfonic acid (—SO3-), methanedithioic acid group (—CS2H), anion group of methanedithioic acid (—CS2-), pyridine group and pyrazine group, or a mixture thereof.

### Claim 8 (depends on 1)

The apparatus for treating air of claim 1, wherein the porous organic-inorganic hybrid materials have a coordinatively unsaturated metal site to which a surface-functionalizing compound can be bound.

### Claim 9 (depends on 1)

The apparatus for treating air of claim 1, wherein the porous organic-inorganic hybrid materials are prepared in a form of powder, thin film, membrane, pellet, ball, foam, slurry, paste, paint, honeycomb, bead, mesh, fiber, corrugated sheet or rotor.

### Claim 10 (depends on 1)

The apparatus for treating air of claim 1, wherein the dehumidifying part further comprises at least one metal catalyst selected from the group consisting of platinum, silver, gold, palladium, ruthenium, rhodium, osmium, iridium, manganese, copper, cobalt, chromium, nickel, iron, zinc and a combination of any two or more thereof.

### Claim 11 (depends on 1)

The apparatus for treating air of claim 1, capable of eliminating hydrocarbon, NOx, CO or VOC (volatile organic compounds) contained in the air received from outside.

### Claim 12 (depends on 1)

The apparatus for treating air of claim 1, wherein the dehumidifying part further comprises at least one dehumidifying agent selected from the group consisting of zeolite, activated alumina, lithium chloride, activated carbon, aluminum silicate, calcium chloride and calcium carbonate.

### Claim 13

An apparatus for treating air by using porous organic-inorganic hybrid materials as an absorbent, comprising:
an inlet passage for receiving air from outside,
a dehumidifying part comprising an adsorbent for removing moisture from the air received through the inlet passage,
a regenerating unit for regenerating the adsorbent of the dehumidifying part, and
an outlet passage for discharging the dehumidified air to outside;
wherein the adsorbent comprises porous organic-inorganic hybrid materials formed by binding a metal ion with an organic ligand,
further comprising,
two two-bed switching dehumidifying parts, and
two switch valves,
wherein two two-bed switching dehumidifying parts may operate alternately for dehumidification and for regeneration using switch valves converting direction of air flow.

### Claim 14

An apparatus for treating air by using porous organic-inorganic hybrid materials as an absorbent, comprising:
an inlet passage for receiving air from outside,
a dehumidifying part comprising an adsorbent for removing moisture from the air received through the inlet passage,
a regenerating unit for regenerating the adsorbent of the dehumidifying part, and
an outlet passage for discharging the dehumidified air to outside;
wherein the adsorbent comprises porous organic-inorganic hybrid materials formed by binding a metal ion with an organic ligand,
wherein the porous organic-inorganic hybrid materials comprise at least one metal component selected from the group consisting of Ag(I) , Cu(II or I) and Ni(II), having antibacterial activity.