Two-stage reaction process of hydro-aromatization of C4 liquefied gas

The invention belongs to the field of petroleum chemistry, and relates to a two-stage reaction process of hydro-aromatization of C4 liquefied gas in a fixed bed reactor. The reaction process is mainly formed by a butene low-temperature aromatization reactor and an iso-butane selective aromatization reactor, so that the C4 liquefied gas can be processed into gasoline fraction with high octane value and a steam cracking material. The operation flexibility can be improved due to two-stage reactors, the quality of the gasoline product with high octane value and the steam cracking material can be guaranteed, and dry gas, coke and other side products can be reduced; the two reactors are under a hydrogenating condition, so that the one-way operation cycle and total service life of the catalyst can be prolonged.