Circulating heat storage device

The utility model discloses a circulating heat storage device and an RTO waste gas treatment system, and relates to the technical field of waste gas treatment. The circulating heat storage device comprises a heat storage chamber and a treatment box on one side of the heat storage chamber, a combustion chamber communicated with the heat storage chamber is installed at the top of the heat storage chamber, an exhaust pipe is fixedly installed on one side of the heat storage chamber, a ceramic heat storage body is fixedly installed on the inner wall of the combustion chamber, and a combustor is fixedly installed on the inner top wall of the combustion chamber. When the activated carbon filter plate needs to be cleaned or replaced, a worker can control the limiting rod to move, and the limiting rod can drive the moving block to extrude the spring and be separated from the limiting groove in the filter drawer, so that the worker can quickly detach the filter drawer and clean or replace the activated carbon filter p