Low-nitrogen energy-saving boiler convenient to overhaul

The low-nitrogen energy-saving boiler convenient to overhaul comprises a boiler shell, a fixing base is arranged at the lower end of the boiler shell, through holes are formed in the two sides of the boiler shell, and a fuel ignition device and a steam pipe fixing base are inserted into the through holes in the two sides of the boiler shell respectively. An air blower is fixed to one end of the fuel ignition device, a combustion pipe is fixed to the other end of the fuel ignition device, a fuel gas guide pipe is arranged on the outer wall of the fuel ignition device, a plurality of steam pipes are installed on the outer wall of the steam pipe fixing base, and the steam pipes are sleeved with steam pipe fixing blocks. And a through hole is formed in the outer wall of the steam pipe. According to the low-nitrogen energy-saving boiler convenient to overhaul, a steam eduction tube fixing structure is arranged in the boiler, multiple sets of steam eduction tubes can be fixed together, meanwhile, the steam eduction