Dry coke quenching exhaust -heat boiler

The utility model provides a dry coke quenching exhaust -heat boiler aims at overcoming above -mentioned not enough that dry coke quenching exhaust -heat boiler among the prior art exists, provide can increase before wall water -cooling wall heating area improve the hydrologic cycle and through setting up the dry coke quenching exhaust -heat boiler that protection mechanism prevented burnt soot particle damage part. It includes back wall water -cooling wall, preceding wall water -cooling wall, over heater, and preceding wall sets up flue gas inlet, and preceding wall water -cooling wall pipe fitting is had loose bowels to extend to the back wall below flue gas inlet and is formed leading evaporimeter, the pipe fitting of leading evaporimeter and the pipe fitting top surface of over heater cover are equipped with the abrasionproof apron. The utility model has following beneficial effects: : (1 )Wall water -cooling wall heating area improves the hydrologic cycle before increasing, (2 )Abrasionproof apron leading evaporimeter pipe fitting of protection and over heater pipe fitting, extension pipe fitting life, (3 ) protective coat plays and prevents that the pipe fitting from receiving the high temperature sulfur corrosion.