Combustor and boiler

The utility model discloses a combustor and a boiler, and belongs to the technical field of boilers. The combustor comprises a combustion cylinder and a feeding pipe, a feeding port is formed in the bottom of the combustion cylinder, an ash discharge port is formed in the top of the combustion cylinder, a drying area, a pyrolysis dry distillation area, a main combustion area and a burnout area aresequentially arranged in an inner cavity of the combustion cylinder from bottom to top, pyrolysis gas generated in the pyrolysis dry distillation area escapes from bottom to top and is reduced into N2 in the main combustion area, and NOx discharge amount is reduced; one end of the feeding pipe is provided with a discharging port and is connected with the feeding port, the other end of the feedingpipe is provided with a feeding driving device, the feeding pipe is provided with a feeding port, the feeding driving device is used for driving fuel in the feeding pipe to enter the combustion cylinder, and the included angl