Replacement method for water outlet pipelines of high-pressure ammonia water pump of coking furnace

Abstract

The invention provides a replacement method for water outlet pipelines of a high-pressure ammonia water pump of a coking furnace. The replacement method for the water outlet pipelines of the high-pressure ammonia water pump of the coking furnace comprises the steps that new pipelines are laid in advance along the routes of the old pipelines, the new pipelines and valves are connected while the coking furnace is maintained, and thus the high-pressure ammonia water pipelines can be replaced without production halts. Compared with the prior art, the replacement method for the water outlet pipelines of the high-pressure ammonia water pump of the coking furnace has the beneficial effects that the new pipelines are laid along the routes of the old pipelines, the old pipelines are dismounted and the new pipelines are connected while the coking furnace is maintained, each set of pipelines can be connected in only four hours, the water outlet pipelines of the high-pressure ammonia water pump of the coking furnace can be replaced rapidly, safely and stably, and the purpose of replacing the high-pressure ammonia water pipelines without production halts is achieved. According to the replacement method for the water outlet pipelines of the high-pressure ammonia water pump of the coking furnace, the wall thickness of the new pipelines is 10 mm after replacement, and the service life of the pipelines is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to a method for replacing the outlet pipe of the coke oven high-pressure ammonia water pump, which is used to replace the outlet pipe of the 7m coke oven high-pressure ammonia water pump. Background technique [0002] The coking department of a steel branch has 3 high-pressure ammonia water pumps to provide high-pressure ammonia water for 4 coke ovens (see figure 1 ). Among them, 1# high-pressure ammonia water pump is connected to 1# coke oven and 2# coke oven. 3# high-pressure ammonia water pump is connected to 3# coke oven and 4# coke oven. The 2# high-pressure ammonia water pump is the spare equipment. It is connected to the 1# high-pressure ammonia water pump pipeline and the 3# high-pressure ammonia water pump pipeline through two valves M1 and M2 respectively. During normal production, the 2# high-pressure ammonia water pump is normally closed. [0003] There is a 7-meter pi...

AI Technical Summary

Problems solved by technology

[0004] 1) The overall tube wall becomes thinner, only 3mm on average, and less than 1mm locally

[0005] 2) There have been multiple leaks, and multiple punches have been temporarily processed

[0006] 3) Post-treatment of leakage of high-pressure ammonia water pipeline will lead to shutdown of coke oven, affecting coke oven production

However, the construction of the overall replacement of the pipeline requires the coke oven to be shut down, which not only affects normal production, but also causes an increase in production costs.

Images