Method and device for producing 3-nitro-N-ethyl tetrahydrocarbazole

• Main Authors: XU LIPING, CAI WEIQI, LYU CHUNHUA
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a method and device for producing 3-nitro-N-ethyl tetrahydrocarbazole, and belongs to the technical field of permanent violet preparation.The method comprises the steps that tetrahydrocarbazole and bromoethane serve as raw materials, and a 3-nitro-N-ethyl tetrahydrocarbazole crude product is obtained through an alkylation reaction and a nitration reaction; the nitration reaction is completed in a nitration reactor, and the nitration reactor comprises a vertical tubular reactor, a homogeneous mixing thin tube and a Y-shaped feeding tube; the uniform mixing slim tube is connected between the Y-shaped feeding tube and the top of the vertical tubular reaction tube; a reactant outlet pipe is arranged at the bottom of the vertical tubular reactor; a plurality of reaction plates which are obliquely arranged are arranged in the vertical tubular reactor, through holes are formed in the reaction plates, and the reaction plates are reversely and obliquely fixed in the vertical tubular reactor in