Production system for co-producing o-nitro-substituted benzene and dinitro-substituted benzene

The utility model relates to the technical field of chemical production, and discloses a production system for co-producing o-nitro substituted benzene and dinitro substituted benzene, which comprises a first reaction unit, a first phase splitting unit, a second reaction unit, a second phase splitting unit, a third reaction unit, a fourth reaction unit, a fifth reaction unit and a sixth reaction unit, a first washing and separating unit and a first product separating unit are sequentially connected in series at the first oil phase outlet, the first product separating unit is provided with a feeding hole, an o-nitro substituted benzene outlet and a mononitro substituted benzene outlet, and a first extraction unit is arranged at the first acid phase outlet; the second reaction unit and the second phase separation unit are sequentially connected in series, the second phase separation unit is provided with a second oil phase outlet and a second acid phase outlet, a second washing separation unit is arranged at th