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【Weekly Topic】Why do the internal components of coal lock valves and ash lock valves used in pressurized gasification of pulverized coal deform after long-term use?

2016-01-18View Original

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Why do the internal components of the coal lock valve and ash lock valve used in pressurized gasification of pulverized coal deform after being in use for a long time? If tungsten carbide deforms, can on-site grinding alone ensure the valve’s service life?
Reply #22016-01-18
Why do the internal components of the coal lock valve and ash lock valve used in pressurized gasification of pulverized coal deform after being in use for a long time? If tungsten carbide deforms, can on-site grinding alone ensure the valve’s service life? Leakage in the cone valve (sealing valve) of the ash lock can lead to difficulties in depressurizing the ash lock, as well as issues with pressure testing, which can be used as indicators. If the lower cone valve leaks as well, it will be difficult to detect if the upper cone valve is also leaking. But you can first address the leakage issue with the upper cone valve, and then, if the pressure test during stamping also turns out to be poor, you can make a judgment.
Reply #32016-01-18
Coal lock valve and ash lock valve for pressurized gasification of pulverized coal
Reply #42016-01-18
I really can’t understand how items can deform after being installed for such a long time!

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