STEAM GENERATING DEVICE AND EXHAUST HEAT RECOVERY PLANT

• Main Authors: OTANI YUICHI, KOZUKI NORITO, UECHI HIDEYUKI, KAJITANI FUMITO, YOSHII DAICHI, NAGAYAMA KANAKO, HIDAKA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 03.06.2021
• 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; SUPERHEATING OF STEAM; WEAPONS

To provide a steam generating device that can enhance efficiency of heat utilization of a heat medium while restraining an increase in sizes of economizers.SOLUTION: A steam generating device comprises a heat medium flow passage through which a heat medium flows, a first economizer provided in the heat medium flow passage, a second economizer provided on the upstream side of the first economizer in the flow direction of the heat medium in the heat medium flow passage, a first evaporator provided on the upstream side of the second economizer in the flow direction of the heat medium in the heat medium flow passage, a first flash tank for generating flash steam, a first water supply line constituted so as to supply water heated by the first economizer to the second economizer, and a second water supply line provided so as to branch from the first water supply line, and constituted so as to supply the water heated by the first economizer to the first flash tank.SELECTED DRAWING: Figure 1 【課題】節炭器のサイズの大型化を抑制しつつ、熱媒体の熱利用の効率を高めることができる蒸気発生装置を提供する。【解決手段】熱媒体が流れる熱媒体流路と、熱媒体流路に設けられた第１節炭器と、熱媒体流路において熱媒体の流れ方向で第１節炭器の上流側に設けられた第２節炭器と、熱媒体流路において熱媒体の流れ方向で第２節炭器の上流側に設けられた第１蒸発器と、フラッシュ蒸気を発生させるための第１フラッシュタンクと、第１節炭器で加熱された水を第２節炭器に供給するように構成された第１給水ラインと、第１給水ラインから分岐して設けられ、第１節炭器で加熱された水を第１フラッシュタンクに供給するように構成された第２給水ラインと、を備える。【選択図】 図１