摘要:
A combustion device (C) burns a fuel in a combustion chamber (N) by using combustion air. The device includes a reducing agent injection device which includes an injection port (2n) and injects a predetermined reducing agent from the injection port (2n) toward a region (Kc) having a low oxygen concentration in a flame (K) in the combustion chamber (N), in which the reducing agent injection device changes a distance of the injection port (2n) with respect to the flame (K) in accordance with an injection amount of reducing agent.
摘要:
A combustion device (C) of the present disclosure is a combustion device which burns fuel ammonia with combustion air in a combustion chamber (N), and includes: a combustor liner (3a) which forms the combustion chamber; a burner (3c) which is installed at one end of the combustor liner; a deflection member (3g) which is provided on a downstream side of the combustor liner in a flow direction of a combustion gas, and is configured to deflect the flow direction of the combustion gas; and at least one ammonia injection hole (3b) which is provided between the burner and an outlet of the deflection member and is configured to supply the fuel ammonia into the combustion chamber.
摘要:
Provided is a combustion heater (100), which includes a heating plate (118), a layout plate (120) disposed opposite to the heating plate, an annular outer circumferential wall (122) interposed between the heating plate and the layout plate, clipping parts (136) configured to sandwich the heating plate, the layout plate, and the outer circumferential wall so that at least one of the heating plate and the layout plate is allowed to expand in an extending direction thereof, a partition plate (124) disposed between the heating plate and the layout plate, a combustion chamber (126) disposed inside the outer circumferential wall along the outer circumferential wall, an inflow passage (128) configured to flow fuel gas into the combustion chamber using the layout plate and the partition plate as a lateral wall thereof, and an outflow passage (130) configured to discharge exhaust gas from the combustion chamber to an outside using the heating plate and the partition plate as a lateral wall thereof, and to preheat the fuel gas using heat of the exhaust gas via the partition plate. According to the combustion heater, thermal fatigue caused by repetition of heating and cooling can be suppressed.
摘要:
Provided is a combustion heater (100), which includes a heating plate (118), a layout plate (120) disposed opposite to the heating plate, an annular outer circumferential wall (122) interposed between the heating plate and the layout plate, clipping parts (136) configured to sandwich the heating plate, the layout plate, and the outer circumferential wall so that at least one of the heating plate and the layout plate is allowed to expand in an extending direction thereof, a partition plate (124) disposed between the heating plate and the layout plate, a combustion chamber (126) disposed inside the outer circumferential wall along the outer circumferential wall, an inflow passage (128) configured to flow fuel gas into the combustion chamber using the layout plate and the partition plate as a lateral wall thereof, and an outflow passage (130) configured to discharge exhaust gas from the combustion chamber to an outside using the heating plate and the partition plate as a lateral wall thereof, and to preheat the fuel gas using heat of the exhaust gas via the partition plate. According to the combustion heater, thermal fatigue caused by repetition of heating and cooling can be suppressed.
摘要:
A continuous heating furnace (200) includes a conveyance body (210) stretched in an endless shape and configured to convey a burning target, a furnace main body (212) partially or entirely surrounding the conveyance body to form a burning space, and a roller (214) configured to support a portion of the conveyance body in the furnace main body. The continuous heating furnace (200) further includes one or more closed gas heaters having an introduction hole configured to introduce a fuel gas into a heater main body, a combustion chamber in which the fuel gas is combusted, a discharge section to which an exhaust gas is guided, a radiation surface heated by the exhaust gas flowing through the discharge section or combustion in the combustion chamber and configured to transfer radiant heat to a burning target, and an exhaust hole configured to exhaust the exhaust gas that heats the radiation surface to the outside of the heater main body, and disposed in the furnace main body, and an exhaust pipe (216) in communication with the exhaust hole of the closed gas heater and through which the exhaust gas is guided. In addition, the exhaust pipe enables heat exchange between the exhaust gas flowing through the exhaust pipe and the roller.
摘要:
A combustion facility (1) using heat accumulation type burners, including: a furnace body (2): and a pair of burners (11A, 11B) provided in the furnace body and each including a heat accumulator (12A, 12B), wherein while the pair of burners are caused to alternately combust in the furnace, a combustion exhaust gas in the furnace is taken in by a burner in a state of non-combustion to accumulate heat in a heat accumulator of the burner, and a predetermined amount of combustion gas is supplied to a burner in a state of combustion (11A), so as to cool a heat accumulator (12B) of the burner and also preheats the combustion gas by heat released from the heat accumulator, the combustion facility further comprising a gas supply unit (31) that supplies a predetermined amount of combustion gas, and also a non-combustion gas which does not produce a disturbance in combustion, to the burner in the state of combustion, so as to cool the heat accumulator of the burner.
摘要:
A combustion device in the present disclosure is a combustion device which burns fuel ammonia in a combustor (2) using combustion air, and includes a catalyst reduction unit (4) which is configured to reduce nitrogen oxides in a combustion exhaust gas supplied from the combustor, in which at least a part of the fuel ammonia is supplied to the catalyst reduction unit as a reducing agent for the nitrogen oxides in the combustion exhaust gas.
摘要:
A combustion device includes an ammonia supply unit (6) supplying primary reduction ammonia as a nitrogen oxide reducing agent into a combustor (2) and mixing secondary reduction ammonia with combustion exhaust gas discharged from the combustor (2) to reduce nitrogen oxide contained in the combustion exhaust gas and a controller (9) configured to control at least one of the amount of supply of the primary reduction ammonia and the amount of mixing of the secondary reduction ammonia with the combustion exhaust gas in accordance with concentrations of residual nitrogen oxide and residual ammonia contained in the combustion exhaust gas after being discharged from the combustor (2).