The invention discloses a multipurpose 
hot blast stove high-temperature preheating 
system and belongs to the technical field of 
hot blast stoves of the 
metallurgical industry. The multipurpose 
hot blast stove high-temperature preheating 
system comprises a hot blast stove, a gas stove, an air 
heat exchanger, a gas 
heat exchanger, a 
chimney, a stop valve, a regulating stop valve, a gas inlet 
pipe, an inlet 
heat exchanger gas header 
pipe, an outlet heat exchanger gas header 
pipe, an air by-pass pipe, a preheated gas pipe, an inlet gas stove gas pipe, a 
combustion-supporting blower, an air header pipe, an inlet heat exchanger air header pipe, an outlet heat exchanger air header pipe, an air by-pass pipe, a preheated air pipe, a gas stove 
combustion-supporting blower, an inlet gas stove air pipe, a hot blast stove 
flue, an inlet gas stove low-temperature 
flue, an outlet gas stove high-temperature 
flue, an outlet air heat exchanger flue, an inlet gas heat exchanger flue, an outlet gas heat exchanger flue, a gas by-pass pipe, a gas header pipe, a maintenance pipe, a front inducting blower maintenance pipe, a gas inducing blower, a front inducting blower sucking pipe, a rear inducting blower maintenance pipe, a rear inducting blower exhausting pipe, a hot blast pipe and a hot blast valve. The multipurpose hot blast stove high-temperature preheating 
system has the advantages that the high wind temperature of 1280 DEG C can be reached through blast stove gas; the efficient utilization of low-quality energy is achieved, and different maintenance demands for the hot blast stove are also met; the on-site 
reaction speed is greatly increased.