| 摘要 |
PURPOSE:To make a light weight and small-sized device by a method wherein a zigzag flow passage reversing in an upward and a downward direction is formed by a parti tion wall within a main body of a boiler formed by a water-cooled wall, the part below the flow passage is formed as a hopper-shaped part and a heat exchanger is arranged in the hopper forming part. CONSTITUTION:A zigzag shaped flow passage reversing in an upward and a downward directions is formed within a main body of a boiler made by a water-cooled wall, a lower part of the flow passage is made as a hopper forming part 27 and then a heat exchanger 7 is arranged within the hopper forming part. Combustion gas containing some particles shows a state that some particles in its are dropped onto the hopper forming part 27 under its reversing condition of flow and striking against the partition wall while passing through the zigzag shaped flow passage, cooled by the heat exchanger within the hopper forming part, its heat is recovered and then returned back to a combustion device 1. In turn, the combustion gas of which particles are separated passes through thermal conductors 14, 15 and 16 and discharged from the main body of the boiler as low temperature gas. Accordingly, it is not necessary to arranged a separator such as a cyclone and an outer heat exchanger, resulting in that its weight and shape are low and its supporting structure is also made simple. |
