A method and device for slowing down the corrosion of the condensate stripping tower top reflux system

Abstract

The application provides a method and device for slowing down the corrosion of the top reflux system of a condensate stripper, which relates to the technical fields of coal chemical industry and petroleum processing. The device includes a condensate stripping tower and a spray tower, and the non-condensable gas output from the top of the condensate stripping tower is cooled by using the spray tower. The above-mentioned device is simple in structure and easy to operate. Using the spray tower as the non-condensable gas cooling system to replace the traditional tower top condenser can effectively solve or slow down the local serious ammonia substances in the tower top reflux system in the existing condensate stripping process. Corrosion Corrosion problems, reduce inspection and maintenance costs Avoid or reduce unplanned shutdowns caused by leakage problems, reduce maintenance costs, and ensure the safe, stable, and long-term operation of the entire stripping system.

Description

technical field [0001] The invention relates to the technical fields of coal chemical industry and petroleum processing, in particular to a method and a device for slowing down the corrosion of the top reflux system of a condensate stripping tower. Background technique [0002] The CO conversion process is a key link in the coal chemical production process and an important purification process in the synthesis of ammonia, methanol and hydrogen production. In order to meet the requirements of water saving and energy saving, the process condensate of coal gasification coal water slurry process and dry powder process will be recycled. [0003] The function of the condensate stripping tower in the conversion section is to strip the ammonia in the low-temperature condensate returned to the gasification to maintain the ammonia balance in the system. The stripping effect will directly affect the ammonia index in the gasification ash water, thereby affecting to the discharge of gas...

AI Technical Summary

Problems solved by technology

[0004] However, there is a common problem of corrosion leakage in the overhead condenser designed with a reflux system

Most of the factories with corrosion occur between half a year and one year after driving. The corroded materials are all stainless steel, which seriously restricts the long-term stable operation of the device. While posing a great threat to the safe production of the device, it also brings certain risks. economic loss and environmental damage

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