PRESSURE-REDUCED BOILER, BINARY POWER GENERATION SYSTEM INCLUDING PRESSURE-REDUCED BOILER, AND INCINERATION FACILITY INCLUDING BINARY POWER GENERATION SYSTEM

To provide a pressure-reduced boiler, a binary power generation system including the pressure-reduced boiler, and an incineration facility, capable of preventing accumulation blockage in a flue tube due to soot dust included in a combustion exhaust gas, and inhibition of heat transfer in accompany therewith, improving a heat transfer property by improving circulation force of boiler water, and being miniaturized.SOLUTION: In a pressure-reduced boiler 6 in which a refrigerant of a binary power generation system 8 is heated by heat recovered from a combustion gas G including soot dust from an incinerator 1, a plurality of smoke pipes 6 in a can body are disposed in a vertical direction.SELECTED DRAWING: Figure 1 【課題】 燃焼排ガスに含まれる煤塵による煙管内での堆積閉塞やそれに伴う伝熱阻害を防止し、缶水の循環力を向上することにより伝熱特性を向上させるとともに、小型化を図ることのできる減圧ボイラ、該減圧ボイラを備えるバイナリー発電システム、及び、前記バイナリー発電システムを備る焼却施設を提供する。【解決手段】 焼却炉１からの煤塵を含む燃焼ガスＧから回収した熱でバイナリー発電システム８の冷媒を加熱する減圧ボイラ６であって、缶体内に配置された複数の煙管６が鉛直方向に設けられている。【選択図】図１