JPH03128207U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is an overall view showing one embodiment of the present invention;
The figure is a vertical and horizontal broken perspective view showing the furnace wall structure of a fluidized bed boiler, Figure 3 is an enlarged partial cross-sectional view of the same as above, Figure 4 is an enlarged cross-sectional view showing the flexible joint of the reflux communication pipe, and Figure 5
The figure is a cutaway perspective view showing a pressure vessel, and FIG. 6 is an overall view of a conventional pressure-type fluidized bed boiler. In the figure, 1 is a pressurized fluidized bed boiler, 2 is a fluidized bed boiler, 4 is a bed material storage container, 5 is a pressure vessel, 8 is a bed material, 9 is a fluidized bed forming section, 9a is a fluidized bed, 1
5 and 16 are communication pipes, 17 is a heat exchanger, and 27 is a flexible joint.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A fluidized bed boiler in which a bed material is added to slurried pulverized coal and the mixture is fluidized and combusted with combustion air is provided in a pressure vessel, and a fluidized bed forming part of the fluidized bed boiler is provided. A bed material storage container is provided which is connected to the bed material by a communicating pipe and is used to control the level of the fluidized bed by recovering or refluxing the bed material from the fluidized bed forming section, and the bed material collected into the bed material is stored in the bed material storage container. A pressurized fluidized bed boiler characterized by being equipped with a heat exchanger for recovering heat from the boiler. 2. The pressurized fluid flow system according to claim 1, wherein the communication pipe connecting the bed material storage container and the fluidized bed boiler is provided with a flexible joint in the middle thereof to allow thermal expansion. Layer boiler.