Water vapor recovery in tubular drying or steam rotary drying of lignite
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This post was last edited by jensse on 2012-11-16 at 11:32. For the tubular drying or steam rotary drying of lignite, the exhaust gas contains a large amount of water vapor; what processes are used to recover this water vapor? Everyone is welcome to share their opinions :)
After dust removal, the temperature of this steam is around 100°C, and it could be considered as a heat source for heat exchangers. However, due to its relatively low temperature and the presence of a small amount of coal powder in it, the thermal efficiency is low, and the heat exchanger is prone to clogging； Personally, I think this steam heating system is quite good
I’ve always been curious: for a steam tubular dryer, is the coal transfer pipe only 60 mm in diameter? Won’t it get clogged with coal types that have high humidity?