PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE

**Definition:** This place covers:

Purifying combustible gases containing carbon monoxide, e.g. synthesis gas, e.g. by dust removal, condensing non-gaseous materials, washing, adsorption using solids such as active carbon; including regeneration of purifying material.

Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. by altering the calorific value, by reducing the carbon monoxide content (e.g. to zero), by catalytic treatment or by mixing with gases.

**Limiting references (this place does not cover):** - Isolation of hydrogen from mixtures containing hydrogen and carbon monoxide -> C01B3/50

**Glossary:** - Combustible gas containing carbon monoxide: syngas, synthesis gas, coke oven gas, pyrolysis gas, carbonisation gas