Esterification separation tower and manufacturing method thereof

Abstract

The invention relates to the technical fields of chemical equipment and methods, and particularly relates to an esterification separation tower and a manufacturing method thereof. A first liquidometer is arranged on a tower body, and a return pipe is arranged at the lower end of the tower body; and the esterification separation tower also comprises a branch pipe, a front protection valve, a rear protection valve, a second liquidometer and a compensating device, wherein the branch pipe is connected with the return pipe, the front protection valve, the second liquidometer and the rear protection valve are sequentially arranged on the branch pipe, and the compensating device is connected with the second liquidometer. Even if the first liquidometer can not be used because of being damaged or having failures under the condition that a production device continuously runs for a long time, on-line maintenance or shutdown overhaul is not required, and the spare second liquidometer can be adopted for carrying out liquid level sampling, and transmitting data to a central controller so as to control the liquid level of ethanediol and the return amount of the ethanediol at the bottom of the esterification separation tower, and then reduce the ethanediol content of esterified wastewater, thereby reducing the production cost, and improving the production effect.

Description

Technical field: [0001] The invention relates to the technical field of chemical equipment and methods, in particular to an esterification separation tower and a manufacturing method thereof. Background technique: [0002] The overall situation of the domestic chemical fiber industry is severe. How to improve production quality and corporate efficiency has become an urgent issue to be solved. The polyester production process in the melt direct spinning process has many raw materials and complex processes. How to optimize the production process and reduce waste in the production process is ours The main entry point for reducing production costs and improving production efficiency. According to the statistical results of the laboratory data, it was found that the ethylene glycol content of one of the raw materials in the esterification wastewater produced during the esterification process of the workshop has been above 0.4%, which is higher than that of other workshops. According t...

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Problems solved by technology

According to the statistical results of the test data, it is found that the content of ethylene glycol, one of the raw materials in the esterification wastewater generated during the esterification process of the workshop, has been above 0.4%, which is higher than that of other workshops. There are 90 tons of chemical water, and the average waste of ethylene glycol is about 13.77 tons. Therefore, in order to reduce costs, reducing the content of ethylene glycol in esterification water is the main direction to be overcome at present, and in the control process, the esterification separation tower bottom B The glycol liquid level is an important reference data, and the ethylene glycol reflux can be controlled according to the glycol liquid level at the bottom of the esterification separation tower, so the problem is transformed into how to measure the glycol liquid level at the bottom of the esterification separation tower , in the prior art, a liquid level gauge is installed at the bottom of the esterification separation tower, but in the actual production process, due to the long continuous operation time of the production device, the liquid level gauge often breaks down and cannot be used, and online maintenance is difficult. Big difficulty, parking and maintenance will cause too much loss, and it is not realistic

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