Direct Fired Heaters

Aromatic Furnaces

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Aromatic Furnaces

Aromatic furnaces are a generic term for furnaces used in the production of BTX (Benzene, Toluene, Xylene). In the catalytic reforming process a mixture of hydrocarbons with boiling points between 60–200 °C is blended with hydrogen gas, passed through the furnace to achieve a temperature of 500–525 °C and then exposed to a bifunctional platinum chloride or rhenium chloride catalyst at pressures ranging from 8–50 atm. Under these conditions, aliphatic hydrocarbons form rings and lose hydrogen to become aromatic hydrocarbons. The aromatic products of the reaction are then separated from the reaction mixture (or reformate) by extraction with any one of a number of solvents, including diethylene glycol or sulfolane.