Dividing-wall rotary kiln apparatus

A dividing-wall rotary kiln apparatus comprising a rotary kiln, a flue gas residual-heat power generation device (26), a gas recovery processing device (5), a cooler (21), a combustion fan (19), a feeding system (1) and an exhaust emission system, the rotary kiln is provided with a kiln body (10), a kiln tail hood (9) and a kiln head hood (16), the kiln body is connected to the kiln tail hood and the kiln head hood via a seal (15), the kiln body is formed by a housing and a refractory bricking-up;

• the kiln head hood is provided with a combustor (17), the kiln body is provided with a charging device (8) and a discharging device (14), the charging device and the discharging device is dynamic sealingly connected with the kiln body;
• the discharging device is connected to the cooler, characterized in that:
• the refractory bricking-up of the kiln body (10) is a hollow structure formed by a refractory inner cylinder (13) and a refractory outer cylinder (24);
• the center of the refractory inner cylinder is a kiln chamber (25), a material passage (11) is between the refractory inner cylinder and the refractory outer cylinder, and the material passage is provided with a refractory support (12);
• the feeding system is connected to the charging device via a raw material preheating compartment or a dividing-wall preheater;
• the charging device is provided with a decomposition gas outlet (7), the decomposition gas outlet is connected to a decomposition gas collector (5) or the gas recovery processing device via the raw material preheating compartment or the dividing-wall preheater, and the kiln chamber is connected to the flue gas residual-heat power generation device via the kiln tail hood.