|  | C |
SECTION C — CHEMISTRY AND METALLURGY

|  | C |
Note(s) Definitions for Section C: Alkali metals: Li, Na, K, Rb, Cs, Fr Alkaline earth metals: Ca, Sr, Ba, Ra Lanthanides: elements with atomic numbers 57 to 71 inclusive Rare earths: Sc, Y, Lanthanides Actinides: elements with atomic numbers 89 to 103 inclusive Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W Halogens: F, Cl, Br, I, At Noble gases: He, Ne, Ar, Kr, Xe, Rn Platinum group: Os, Ir, Pt, Ru, Rh, Pd Noble metals: Ag, Au, Platinum group Light metals: alkali metals, alkaline earth metals, Be, Al, Mg Heavy metals: metals other than light metals Iron group: Fe, Co, Ni Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens Metals: elements other than non-metals Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

CHEMISTRY

|  | C10 |
PETROLEUM, GAS AND COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT

|  | C10K |
PURIFYING OR MODIFYING THE CHEMICAL COMPOSITIONS OF COMBUSTIBLE TECHNICAL GASES CONTAINING CARBON MONOXIDE

|  | C10K 1/00 |
Purifying combustible technical gases containing carbon monoxide (isolation of hydrogen from mixtures containing hydrogen and carbon monoxide Fulltext... Hierarchy... Expanded...C01B 3/50)

|  | C10K 1/02 |
· | Dust removal

|  | C10K 1/04 |
· | by cooling to condense non-gaseous materials

|  | C10K 1/06 |
· · | combined with spraying with water

|  | C10K 1/08 |
· | by washing with liquids; Reviving the used wash liqours (gas washers Fulltext... Hierarchy... Expanded...B01D)

|  | C10K 1/10 |
· · | with aqueous liquids

|  | C10K 1/12 |
· · · | alkaline-reacting

|  | C10K 1/14 |
· · · · | organic

|  | C10K 1/16 |
· · | with non-aqueous liquids

|  | C10K 1/18 |
· · · | hydrocarbon oils

|  | C10K 1/20 |
· | by treating with solids; Regenerating spent purifying masses

|  | C10K 1/22 |
· · | Apparatus, e.g. dry box purifiers

|  | C10K 1/24 |
· · · | Supporting means for the purifying material

|  | C10K 1/26 |
· · | Regeneration of the purifying material

|  | C10K 1/28 |
· · | Controlling the gas flow through the purifiers

|  | C10K 1/30 |
· · | with moving purifying masses

|  | C10K 1/32 |
· | with selectively absorptive solids, e.g. active carbon

|  | C10K 1/34 |
· | by catalytic conversion of impurities to more readily removable materials

|  | C10K 3/00 |
Modifying the chemical composition of combustible technical gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide

|  | C10K 3/02 |
· | by catalytic treatment

|  | C10K 3/04 |
· · | reducing the carbon monoxide content

|  | C10K 3/06 |
· | by mixing with gases