System for treating tower kettle reboiler pipeline siphon failure on line

By installing a drain valve and a nitrogen line on the liquid phase line of the reboiler, the problem of blockage in the liquid phase line of the reboiler was solved, the steam heat exchange effect and siphon efficiency were improved, material waste was avoided, and the operating efficiency and economic benefits of the ethylene glycol distillation system were enhanced.

CN224442196UActive Publication Date: 2026-07-03GNSG ANHUI HONG SIFANG
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Patent Information

Application Number
CN202521416325.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-07
Publication Date
2026-07-03
Estimated Expiration
2035-07-07

AI Technical Summary

Technical Problem

In existing technologies, blockage of the liquid phase pipeline in the reboiler of the tower leads to poor steam heat exchange, reduced siphon efficiency, and poor methanol separation, resulting in material waste.

Method used

A drain valve is installed on the liquid phase pipeline of the reboiler in the tower, and a nitrogen pipeline is connected through the drain valve. Nitrogen gas is used to purge the liquid phase pipeline for a short time to remove impurities such as metal powder and silicon salt that are blocked, so as to avoid oxidation reaction and pipeline blockage.

Benefits of technology

It improved the heat exchange effect of the tower bottom, avoided the losses caused by system shutdown and inspection, reduced material waste, and improved work efficiency and economic benefits.

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Abstract

The utility model provides a system for treating tower kettle reboiler pipeline siphon failure on line, which relates to the technical field of rectification system thermosiphon and comprises a tower kettle reboiler liquid phase pipeline, a spray guide valve is arranged on the tower kettle reboiler liquid phase pipeline, and a nitrogen pipeline is connected with the spray guide valve. According to the utility model, the spray guide valve is arranged on the liquid phase pipeline of the tower kettle reboiler, the nitrogen pipeline is connected through the spray guide valve, and impurities such as metal powder and silicon salt blocked in the liquid phase pipeline of the tower kettle reboiler are purged into the liquid phase pipeline of the tower kettle pump in a manner of purging the liquid phase pipeline by nitrogen in a short time; therefore, pipeline blockage is avoided, the heat exchange effect of the tower kettle is improved, and the problems of siphon failure of the tower kettle and waste of methanol are solved. According to the utility model, the problem of siphon failure of the tower kettle reboiler pipeline of the methanol recovery tower can be solved on line under the condition of no shutdown, and the cost loss caused by shutdown is avoided.
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