Service life issue of the quench ring downcomer.
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Dear colleagues, what is the service life of the quench ring downcomer in your facility? How often should a downcomer generally be replaced?
It depends specifically on the quality of the coal and the methods of operation and control. There is no shortest duration – only durations that are shorter; some systems last less than a month, while others can last several years.
How can operations and controls be used to extend the service life of the downcomer?
The downcomer generally lasts for 2 years, while the quench ring lasts about 1 year; they need to be cleaned internally before being reused
It depends on factors such as the type of coal used, the quality of the ash water, and the furnace temperature； Our usage effect is not good. Generally, the quenching ring needs to be rewelded after 6,000 hours of use ； The downcomer has been in use for one year
The use of the downcomer depends mainly on the amount of quench water, while whether to replace it depends on whether there is a need to do so.
Having seen everyone’s replies, I was wondering if anyone could provide a systematic summary in response, covering several different scenarios?