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In view of the special conditions of gas drainage boreholes in coal mines, an automatic monitoring system of gas drainage borehole is designed, which consists of operation control, image acquisition, image transmission, record demonstration, electricity supply and explosion protection. According to the voltage level in coal mine, a three-stage transformer with wide voltage range and stable operation...
Micronized coal reburning is one of the most effective de-NOX technologies for its high NOX reduction efficiency and low operating cost. By numerical simulation and experimental study, NOX reduction efficiency influenced by the temperature and stoichiometric ratio in rich zone, the velocity and the particle size of reburning fuel during the coal reburning process in a one dimension furnace has been...
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