Corrosion problem of heated air caused by vaporization flash steam
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Since the gasification flash vapor contains various unknown substances: COD, BOD, salt ions, NH3-N. We are currently using 321 tubes in a heat exchanger to heat cold air, and after one year of operation leaks have occurred. What should we do? What causes the corrosion mainly? And discuss what type of steel should be used for heat exchangers in order to make good use of the vaporization flash steam.
This post was last edited by Wang Genrong on 2017-1-11 at 19:49. What about process parameters such as temperature and pressure? -- --
This post was last edited by Wang Genrong on 2017-1-9 09:08; graphite heat exchangers are recommended. - --
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The steam parameters are slightly above 110, with a maximum gauge pressure of 1 kilogram per square centimeter. It contains a small amount of fly ash.
This operating condition is suitable for using graphite heat exchangers; if necessary, sprayers can be installed for intermittent spraying to address the issue of fly ash clogging and deposition. -