Supercritical circulating fluidized bed boiler hearth heating surface
A circulating fluidized bed, boiler furnace technology, applied in steam boilers, lighting and heating equipment, steam generation and other directions, can solve problems such as increasing the difficulty and cost of boiler manufacturing, reducing the design heating area of the water wall, and reducing the height of the furnace. , to achieve the effect of reducing the cost and manufacturing difficulty, reducing the height of the furnace, and reducing the heating area
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Embodiment 1
[0022] Furnace heating surface of supercritical circulating fluidized bed boiler, including water-cooled air distribution plate 1, water-cooled wall 2 and expansion screen 3; lower header 22 of the water-cooled wall is the working fluid inlet header, and upper water-cooled wall header 21 is the working fluid outlet header The expansion screen 3 is an L-shaped membrane screen, and the lower part of the expansion screen 3 is laid with wear-resistant materials. It is located inside the water wall 2 ; the header 21 on the water wall is connected to the header 32 under the expansion panel through a connecting pipe 23 .
[0023] The heating area of the water-cooled wall 2 can heat the working medium into wet steam with a dryness of 80% under the boiler 30% load condition, and can heat the working medium into superheated steam under the 50% load condition of the boiler; The heating area of the screen 3 is such that the wet steam with a dryness of 80% introduced from the water wal...
Embodiment 2
[0025] Furnace heating surface of supercritical circulating fluidized bed boiler, including water-cooled air distribution plate 1, water-cooled wall 2 and expansion screen 3; lower header 22 of the water-cooled wall is the working fluid inlet header, and upper water-cooled wall header 21 is the working fluid outlet header The expansion screen 3 is an L-shaped membrane screen, and the lower part of the expansion screen 3 is laid with wear-resistant materials. It is located inside the water wall 2 ; the header 21 on the water wall is connected to the header 32 under the expansion panel through a connecting pipe 23 .
[0026] The heating area of the water wall 2 is that the working medium can be heated to wet steam with a dryness of 85% under the boiler 30% load condition, and the working medium can be heated to saturated steam under the boiler 50% load condition; The heating area of the screen 3 is such that the wet steam with a dryness of 85% introduced from the water wall ...
Embodiment 3
[0028] Furnace heating surface of supercritical circulating fluidized bed boiler, including water-cooled air distribution plate 1, water-cooled wall 2 and expansion screen 3; lower header 22 of the water-cooled wall is the working fluid inlet header, and upper water-cooled wall header 21 is the working fluid outlet header The expansion screen 3 is an L-shaped membrane screen, and the lower part of the expansion screen 3 is laid with wear-resistant materials. It is located inside the water wall 2 ; the header 21 on the water wall is connected to the header 32 under the expansion panel through a connecting pipe 23 .
[0029] The heating area of the water wall 2 is such that the working medium can be heated to wet steam with a dryness of 80% under the boiler 30% load condition, and the working medium can be heated to a dryness of 95% under the boiler 50% load condition. % wet steam; the heating area of the expansion panel 3 is that under the boiler 30% load condition, it can ...
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