Dual-direct-current circulating fluidized bed steam-injection boiler with vertical evaporating pipes inside
A circulating fluidized bed and steam injection boiler technology, which is applied in steam boilers, steam generation, lighting and heating equipment, etc., can solve the problems of heat transfer deterioration, tube burst, and water-cooled wall tubes are prone to salt scaling, etc., to ensure safety Stable operation and the effect of solving the problem of pipe burst
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specific Embodiment approach 1
[0014] Specific implementation mode one: as figure 1 As shown, a double-flow circulating fluidized bed steam injection boiler with vertical evaporating tubes in the furnace includes a furnace body 1, a connecting pipe 2a, a connecting pipe 2b, an economizer outlet water main pipe 7, and two side walls (that is, the furnace body 1 Left and right side walls) connecting pipe 8, front and rear wall connecting pipe 9, primary air duct 12, secondary air duct 13, cyclone separator 15, steam connecting pipe 17, connecting pipe 3 18, superheater 19, evaporator 20, province Coal burner 21, secondary air air preheater 22, primary air air preheater 23, return valve 24, sewage pipe 27, tail flue 30, water cooling screen 31, connecting pipe four 34, external centrifugal separator 35 , connecting pipe six 36, mixer 37 and connecting pipe five 16; the furnace body 1 is a circulating fluidized bed, the bottom of the furnace body 1 is provided with a primary air chamber 26, and the bottom of th...
specific Embodiment approach 2
[0018] Specific implementation mode two: as figure 1 As shown in the specific embodiment 1, a double-flow circulating fluidized bed steam injection boiler with vertical evaporation tubes in the furnace described in the first embodiment, the steam connecting pipe 17 is equipped with an electric valve 1 38, and the connecting pipe 5 16 is equipped with Electric valve two 39 are installed. By fine-tuning the first electric valve 38 and the second electric valve 39, the resistance balance of the superheater 19 and the evaporator 20 is ensured, thereby realizing system pressure balance.
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