Efficient coal dust combustor for reducing smoke NOx content
A burner and content technology, applied in the direction of burners, burners burning powder fuel, combustion methods, etc., can solve the problems of inapplicability to small and medium-sized pulverized coal boilers
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Embodiment 1
[0017]The high-efficiency pulverized coal burner for reducing the NOx content of flue gas includes a primary air duct 1; the inner cavity of the primary air duct 1 forms a primary air channel 2; the outer coaxial sleeve of the primary air duct 1 is provided with an air mixing sleeve 3; the air mixing sleeve The inlet end of the tube 3 is connected with the mixed air inlet pipe 4; the outlet end of the mixed air sleeve 3 is provided with a mixed air expansion section 5; the inner wall of the mixed air sleeve 3 and the outer wall of the primary air pipe 1 jointly form an annular mixed air chamber 6 The outer coaxial sleeve of the air mixing sleeve 3 is provided with an inner secondary air sleeve 7; the inlet end of the inner secondary air sleeve 7 is connected with an inner secondary air inlet pipe 8; the outlet of the inner secondary air sleeve 7 The end is provided with an inner secondary air expansion section 9; the inner wall of the inner secondary air sleeve 7 and the outer ...
Embodiment 2
[0022] The high-efficiency pulverized coal burner for reducing the NOx content of flue gas includes a primary air duct 1; the inner cavity of the primary air duct 1 forms a primary air channel 2; the outer coaxial sleeve of the primary air duct 1 is provided with an air mixing sleeve 3; the air mixing sleeve The inlet end of the tube 3 is connected with the mixed air inlet pipe 4; the outlet end of the mixed air sleeve 3 is provided with a mixed air expansion section 5; the inner wall of the mixed air sleeve 3 and the outer wall of the primary air pipe 1 jointly form an annular mixed air chamber 6 The outer coaxial sleeve of the air mixing sleeve 3 is provided with an inner secondary air sleeve 7; the inlet end of the inner secondary air sleeve 7 is connected with an inner secondary air inlet pipe 8; the outlet of the inner secondary air sleeve 7 The end is provided with an inner secondary air expansion section 9; the inner wall of the inner secondary air sleeve 7 and the outer...
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