Vertical type stirred-free polymerization reactor

Abstract

The invention relates to a vertical type stirred-free polymerization reactor. A liquid distribution disc is arranged at the upper part of the internal chamber of a tubular body, liquid distribution holes are formed in the liquid distribution disc, falling-film tubes are arranged in the liquid distribution holes, heat-medium heating tubes are inserted into internal cavities of the falling-film tubes, a charging opening and a vacuumizing opening are formed in the external wall of the upper part of the tubular body, a discharging spiral and a discharging opening are formed in the bottom of the tubular body, a tubular body jacket is arranged at the outer periphery of the tubular body, the charging opening is located below the liquid distribution disc, an annular liquid distribution groove is formed in the internal wall, corresponding to the charging opening, of the tubular body, and uniform annular slots are reserved between the lower end of the liquid distribution groove and the internal wall of the tubular body; an annular liquid collecting groove is formed in the internal wall of the lower part of the tubular body, the upper end of the liquid collecting groove is open, and the lower end of the liquid collecting groove is closed; an intermediate melt outlet communicating with the bottom of the liquid collecting groove is formed in the external wall of the tubular body and is connected with an inlet of a conveying pump, an outlet of the conveying pump is connected with an intermediate melt inlet, and the intermediate melt inlet is located in the external wall of the tubular body and is located above the liquid distribution disc. The reactor is high in production efficiency and low in energy consumption.

Description

technical field [0001] The invention relates to a vertical non-stirring polymerization reactor, which belongs to the technical field of polyester production equipment such as PET and PBT. Background technique [0002] The traditional vertical non-stirring polymerization reactor consists of a vertical cylinder with closed ends. The upper part of the inner cavity of the cylinder is equipped with a horizontal liquid distribution plate that partitions the cylinder horizontally. The liquid distribution plate is provided with liquid distribution holes. , the liquid distribution hole is provided with a falling film tube with both ends closed and the gap between the two is uniform. The falling film tube extends vertically downwards and the upper end protrudes from the top of the cylinder. Heat medium heating tube, the upper outer wall of the cylinder is provided with a feed port and a vacuum port, the lower end of the cylinder is provided with a conical head, the lower end of the co...

AI Technical Summary

Problems solved by technology

[0004] After the PET or PBT melt enters the inner cavity of the cylinder, the heated area is relatively small, and only one polymerization reaction is performed, the reaction speed is slow, and the production efficiency is low.

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