Combustion device and boiler
Provided is a combustion device including: a burner that includes an ammonia injection nozzle having an injection port that faces an inner space of a furnace; and an adjustment structure that adjusts a separation distance between the injection port and the inner space.
1 . A combustion device, comprising:
a burner including an ammonia injection nozzle having an injection port that faces an inner space of a furnace; and
an adjustment structure configured to adjust a separation distance between the injection port and the inner space,
wherein the burner includes a pulverized coal injection nozzle having an injection port that faces the inner space of the furnace, and
wherein the combustion device further comprises a control device configured to control operation of the adjustment structure based on a flow rate of pulverized coal in the pulverized coal injection nozzle.
2 . The combustion device according to claim 1 , further comprising a control device configured to control operation of the adjustment structure so that the injection port is moved toward an inner side of the furnace as a flow rate of ammonia in the ammonia injection nozzle becomes lower.
3 . The combustion device according to claim 2 , further comprising a control device configured to control operation of the adjustment structure based on a temperature in the inner space of the furnace.
4 . The combustion device according to claim 1 , further comprising:
an air supply portion having an injection port that faces the inner space of the furnace; and
a control device configured to control operation of the adjustment structure based on a flow rate of air in the air supply portion.
5 . The combustion device according to claim 4 , further comprising a control device configured to control operation of the adjustment structure based on a temperature in the inner space of the furnace.
6 . The combustion device according to claim 1 , further comprising a control device configured to control operation of the adjustment structure based on a temperature in the inner space of the furnace.
7 . A boiler comprising the combustion device of claim 1 .
8 . A combustion device, comprising:
a burner including an ammonia injection nozzle having an injection port that faces an inner space of a furnace;
an adjustment structure configured to adjust a separation distance between the injection port and the inner space;
an air supply portion having an injection port that faces the inner space of the furnace; and
a control device configured to control operation of the adjustment structure based on a flow rate of air in the air supply portion.
9 . The combustion device according to claim 8 , further comprising a control device configured to control operation of the adjustment structure based on a temperature in the inner space of the furnace.