DRYING OR LOW-TEMPERATURE DRY DISTILLATION METHOD AND DEVICE FOR LIGNITE COAL OR LOW-METAMORPHIC CANDLE COAL

Disclosed are a drying or low-temperature dry distillation method and device for lignite coal or low-metamorphic candle coal, wherein the device comprises a tunnel-type drying chamber, a material loading wagon and metal material pipes; the top of the tunnel-type drying chamber is provided with a plurality of tail gas discharging holes, and the bottom thereof is provided with more than one condensate water discharging outlet; the charging end of the tunnel-type drying chamber is a low-temperature segment, the discharging end thereof is a high-temperature segment, and a hot air or steam inlet is provided in the high-temperature segment; a plurality of metal material pipes provided with air holes are installed on the material loading wagon; the material loading wagon is provided in the tunnel-type drying chamber and moves from the charging end to the discharging end; and the device is also provided with a heat exchanger which is in communication with the tail gas discharging holes and the hot air or steam inlet.