660MW tangential firing ultra-supercritical boiler burning Xinjiang Zhundong coal
An ultra-supercritical boiler and tangential combustion technology, which is applied in steam boilers, steam superheating, steam generation, etc., can solve problems such as tube burst and shutdown, and achieve low furnace heat load, reduced coking tendency, and reduced heat load Effect
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specific Embodiment approach 1
[0011] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a 660MW tangentially fired ultra-supercritical boiler using Xinjiang Zhundong coal described in this embodiment includes an economizer 1, a water wall 2, a superheater system 3, a reheater system 4, and a start-up system 5 The flue gas system 7, the starting system 5 are installed on the top of the furnace 8, the economizer 1, the superheater system 3, the reheater system 4, and the combustion system 6 are installed on the upper part of the furnace 8, and the combustion system 6 is installed on the top of the furnace 8 In the middle part, the water-cooled wall 2 is installed on the inner wall of the furnace 8, the flue gas system 7 is installed at the lower part of the furnace 8, the combustion system 6 is arranged at the corner of the furnace 8 surrounded by the water-cooled wall system 2, and the flame forms four corners in the furnace 8 Cut round and burn. The flue gas ratio in the fro...
specific Embodiment approach 2
[0016] Specific implementation mode two: combination figure 1 To illustrate this embodiment, a superheating system 3 of a 660MW tangentially fired ultra-supercritical boiler using Xinjiang Zhundong coal described in this embodiment includes a primary superheater 3-1, a secondary superheater 3-2 and a tertiary superheater 3-3, the first-stage superheater 3-1 is installed in the rear shaft of the tail flue of the furnace 8, the second-stage superheater 3-2 is installed on the top of the furnace 8, and the third-stage superheater 3-3 is installed at the outlet of the furnace 8 in the horizontal convection flue. The superheater system 3 also includes a ceiling-wrapped superheater, a low-temperature superheater, a partition superheater, a final stage superheater, and related connecting pipes and headers. Other components and connections are the same as those in the first embodiment.
specific Embodiment approach 3
[0017] Specific implementation mode three: combination figure 1 To illustrate this embodiment, a reheater system 4 for a 660MW tangentially fired ultra-supercritical boiler using Xinjiang Zhundong coal in this embodiment includes a first-stage reheater 4-1 and a second-stage reheater 4-2 The primary reheater 4-1 is installed in the front shaft of the flue at the tail of the furnace 8, and the secondary reheater 4-2 is installed in the horizontal convection flue at the outlet of the furnace 8. The reheater system 4 also includes a low temperature reheater, a final reheater and associated connecting piping and headers. Other components and connections are the same as those in the first embodiment.
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