System for online handling of reboiler line siphon failure

By installing a drain valve and a nitrogen pipeline on the liquid phase line of the reboiler, the problem of blockage in the liquid phase line of the reboiler was solved, enabling online cleaning of impurities, reducing downtime inspection losses, improving steam heat exchange efficiency and methanol separation, and reducing material waste.

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

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GNSG ANHUI HONG SIFANG
Filing Date
2025-07-07
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

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

Method used

A drain valve is installed on the liquid phase pipeline of the reboiler in the tower bottom, and connected to a nitrogen pipeline. The pipeline is cleaned by short-term nitrogen purging to remove impurities such as metal powder and silicon salts. The impurities are then filtered out by the inlet filter of the tower bottom pump to avoid pipeline blockage.

Benefits of technology

Online processing of reboiler pipeline siphon failure issues reduces downtime for inspections, saves steam and electricity costs, improves methanol separation efficiency, and reduces material waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a system for online treatment of siphon failure in the reboiler pipeline of a distillation column, relating to the technical field of thermosiphon in distillation systems. The system includes a liquid phase pipeline in the reboiler, on which a drain valve is installed, and a nitrogen pipeline is connected to the drain valve. By installing a drain valve on the liquid phase pipeline of the reboiler and connecting it to a nitrogen pipeline, the system uses nitrogen to briefly purge the liquid phase pipeline, blowing away metal powder and silicate impurities that clog the reboiler's liquid phase pipeline into the reboiler pump's liquid phase pipeline. These impurities are then filtered and carried away by the reboiler pump's inlet filter, preventing pipeline blockage, improving the reboiler's heat exchange efficiency, and thus improving the problems of reboiler siphon failure and methanol waste. This invention can treat the siphon failure problem of the methanol recovery column's reboiler pipeline online without shutting down the system, avoiding the cost losses caused by shutdown.
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