CIRCULATION TYPE BOILER SYSTEM, FIRE POWER GENERATION PLANT, AND EXHAUST HEAT RECOVERY METHOD

• Main Authors: INOUE YUKIHIKO, KANETOME MASATO, TANAKA HIDEHARU, FUJII YUICHIRO, NAKAJIMA YUJI, TAMURA KAZUHISA, HAMAZAKI AKIHIRO, TANAKA TORU, FUJIOKA MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 24.06.2019
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHINBOILERS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; CONTROLLING WATER LEVEL; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; FEED-WATER SUPPLY; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; STEAM ACCUMULATORS; STEAM BOILERS; STEAM ENGINE PLANTS; STEAM ENGINES; STEAM GENERATION; WEAPONS

To provide a circulation type boiler system which can achieve improvement of the efficiency by utilizing exhaust heat, and to provide a fire power generation plant and an exhaust heat recovery method.SOLUTION: A circulation type boiler system includes: a steam turbine 10 driven by steam S; a condenser 11 which introduces the steam S from the steam turbine 10; a cooling tower 12 which circulates water W between itself and the condenser 11 and condenses the steam S with the condenser 11 to generate the water W; a circulation type boiler 13 which evaporates the water W from the condenser 11 to introduce the water W into the steam turbine 10; a blow pipe 14 which discharges a part of the water W from the circulation type boiler 13; a heat exchanger 20 which conducts heat exchange between the water W discharged from the blow pipe 14 and the water W flowing from the condenser 11 to the circulation type boiler 13 to cause the water W introduced into the circulation type boiler 13 to recover heat; and a cooling tower introduction pipe 15 which introduces the water W that has been subject to heat exchange in the heat exchanger 20 into the cooling tower 12.SELECTED DRAWING: Figure 1 【課題】排熱利用により、さらなる効率向上を図ることが可能な循環式ボイラシステム、火力発電プラント、及び排熱回収方法を提供する。【解決手段】水蒸気Ｓによって駆動する蒸気タービン１０と、蒸気タービン１０からの水蒸気Ｓを導入する復水器１１と、復水器１１との間で水Ｗを循環させ、復水器１１で水蒸気Ｓを凝縮させて水Ｗを生成させる冷却塔１２と、復水器１１からの水Ｗを蒸発させ、蒸気タービン１０へ導入する循環式ボイラ１３と、循環式ボイラ１３から水Ｗの一部を排出するブロー配管１４と、ブロー配管１４から排出される水Ｗと、復水器１１から循環式ボイラ１３へ向かう水Ｗとの間で熱交換を行い、循環式ボイラ１３へ導入される水Ｗに熱回収させる熱交換器２０と、熱交換器２０で熱交換した後の水Ｗを冷却塔１２へ導入する冷却塔導入配管１５と、を備えている。【選択図】図１