Rectification separation tower for preparing 5-chloro-2-methylaniline and preparation method

• Main Authors: GUO CHUNPENG, TIAN ZHAOYONG, GONG PENGFEI
• Format: Patent
• Language: Chinese; English
• Published: 11.08.2023
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses a rectification separation tower for preparing 5-chloro-2-methylaniline and a preparation method, and relates to the technical field of chemical equipment, the rectification separation tower comprises a rectification assembly, a reflux assembly, a heating assembly, a feeding pipe, a waste discharge pipe and a discharge pipe. The invention further discloses a preparation method of the rectification separation tower for preparing the 5-chloro-2-methylaniline. The preparation method comprises the following steps of raw material preparation, raw material addition, raw material rectification and circulating rectification. The rectification assembly is arranged, the backflow assembly is arranged at the top end of the rectification assembly, the heating assembly is arranged at the bottom end of the rectification assembly, the heating assembly can heat a mixed solution at the bottom of the device, the mixed solution is gasified and moves upwards, and the gasified mixed solution is rectified in