Sludge drying and waste incineration cooperated system

The invention provides a sludge drying and waste incineration cooperative system which comprises a steam drying assembly used for primary drying of sludge, a flue gas drying assembly connected with the steam drying assembly and used for secondary drying of the sludge, and a dry sludge conveying assembly connected with the flue gas drying assembly and used for conveying the sludge to a waste incineration boiler. The recycling flue gas conveying assembly is used for conveying the recycling flue gas to the waste incineration boiler, and the ash falling device is connected into the waste incineration boiler. According to the sludge drying and waste incineration cooperative system, wet sludge is conveyed to the front and rear arch water-cooling walls and the left and right water-cooling walls of the waste incineration boiler after being subjected to steam drying and flue gas drying, and enters the boiler together with recycled flue gas, and meanwhile, the ash falling device is additionally arranged in front of the