Combustion-supporting cooling system of low-temperature tunnel kiln

The utility model relates to the technical field of low-temperature tunnel kiln combustion-supporting cooling, in particular to a low-temperature tunnel kiln combustion-supporting cooling system. The low-temperature tunnel kiln combustion-supporting cooling system comprises a high-temperature firing area, the high-temperature firing area is connected with a first cooling area through a waste heat air pipeline area, the first cooling area is connected with a third cooling area through a second cooling area, the third cooling area is connected with a kiln tail area, and a waste heat air inlet interactive heat exchanger pipeline is arranged above the waste heat air pipeline area. And the waste heat air inlet interactive heat exchanger pipeline is connected with the waste heat air outlet interactive heat exchanger pipeline through the interactive heat exchanger. According to the system, the high-temperature firing area is separated from the combustion-supporting air inlet pipeline through waste heat air, flue gas