Double-layer channel interactive calcination and preheating lime kiln

The utility model relates to a double-layer channel interactive calcination and preheating lime kiln which structurally comprises two work kiln chambers arranged in parallel, and a double-layer connecting channel is connected between the two work kiln chambers. According to the double-layer channel interactive calcination and preheating lime kiln, the straight-through type double-layer connecting channel is arranged between the work kiln chambers arranged in parallel, periodical alternation of kiln chamber calcination and kiln chamber preheating can be achieved in the two work kiln chambers, and therefore smooth implementation of calcination parallel flow and preheating integral countercurrent is guaranteed. The working mode is suitable for the limestone decomposition principle, and full utilization of high activity and preheat of products is achieved. According to the design of the double-layer connecting channel, physical isolation of lime cooling air and high-temperature air currents is guaranteed in cooli