A Low-NOx combustor capable of internal recirculation of flue gas by using venturi effect through improvement of burner structure

摘要

The present invention relates to a combustion device capable of recirculating exhaust gas generated inside a combustion furnace by using the venturi effect through improvement of the burner structure, comprising: a combustion furnace; and a burner having a tip portion inserted into the combustion furnace and positioned, the burner comprising: a primary air supply pipe disposed in a central portion and configured to mix fuel and primary air and supply the fuel and primary air into the combustion furnace; a secondary air supply pipe positioned to surround the primary air supply pipe and configured to supply secondary air into the combustion furnace as a combustion furnace; a tertiary air supply pipe positioned to surround the secondary air supply pipe and configured to supply tertiary air into the combustion furnace as a combustion furnace; And it provides a combustion device comprising a plurality of exhaust gas recirculation pipes formed along the inner circumference of the combustion furnace of the tertiary air supply pipe.