APPARATUS FOR DRYING/LOW-TEMPERATURE CARBONIZATION OF LIGNITE WITH STEAM HEAT CONDUCTION

An apparatus for drying/low-temperature carbonization of lignite with steam heat conduction, which comprises more than two drying chambers in sequential communication; each of the drying chambers is provided with a heating device and with a discharge outlet for condensate water at the bottom of the drying chamber; each drying chamber is fed with steam via a gas inlet pipe and is in communication with the gas inlet pipe of the next drying chamber via a gas outlet pipe, and so forth for communication with the subsequent drying chambers. An automatic gas inlet valve is provided between the adjacent gas outlet pipe and gas inlet pipe in communication with each other; and the discharge outlet for condensate water is connected with a water discharging valve. The lignite after drying/low-temperature carbonization by the apparatus has a significantly reduced water content, extremely low re-sorption, a greatly improved unit heating value, a greatly reduced volume, and improved particle strength. The apparatus has low