Abrégé

Provided are a steam-circulating-system pipeline drying device and a pipeline drying method in a steam-supplying system with which it is possible to substantially completely exhaust, to outside the system, drainage that remains in a line, which extends from a steam supplying source to a water supply tank via a steam-utilizing device, after operation of the steam-circulating system is halted, and with which it is possible to dry the inside of the line. A steam-circulating-system drying device comprises: a storage tank 11 that stores normal-temperature water; a circulation pump 12 that causes water inside the storage tank 11 to circulate through circulation piping 13; an ejector 14 that uses water supplied under pressure by the circulation pump 12 as driving water; and a drainage suction pipe 16 that is provided with a switching valve 15, and that connects a drainage suction port 14b of the ejector 14 and a steam drainage pipeline 6 to each other. The steam-circulating-system drying device is connected to a steam-circulating system, and steam and drainage that remain in a pipeline inside the system are sucked by the ejector in order to dry the pipeline.

Classes IPC  ?

• F22B 37/00 - Détails ou parties constitutives des chaudières à vapeur
• F22B 35/00 - Systèmes de commande pour chaudières à vapeur
• F22D 11/00 - Alimentation en eau non prévue dans les autres groupes principaux
• F22D 11/06 - Aménagement des pompes d'alimentation en eau pour retour des condensats à la chaudière

Abrégé

A heat recovery apparatus recovers steam drain including at least one of steam used in a different device and drain where the steam used in the different device is condensed so as to recover heat contained in the steam drain. The heat recovery apparatus includes a pump, which circulates water accumulated in a tank through circulation pipes, an ejector, which is interposed in the circulation pipes and suctions the steam drain and mixes the steam drain with the circulating water so as to recover the steam drain, and a ball tap and a temperature controller, which perform temperature control of the water in the tank by replenishing the tank with tap water after a part of the water in the tank is discharged in the case where the water in the tank has reached a preliminarily set first temperature.

Classes IPC  ?

• F22D 1/32 - Appareils de chauffage d'eau d'alimentation, p. ex. préchauffeurs disposés pour un chauffage par la vapeur, p. ex. prélevée dans la turbine
• F22D 11/06 - Aménagement des pompes d'alimentation en eau pour retour des condensats à la chaudière
• F22D 1/28 - Appareils de chauffage d'eau d'alimentation, p. ex. préchauffeurs avec transfert direct de la chaleur, p. ex. par mélange d'eau et de vapeur
• F28B 1/02 - Condenseurs dans lesquels la vapeur d'eau ou autre vapeur est séparée de l'agent de refroidissement par des parois, p. ex. condenseur à surface utilisant l'eau ou un autre liquide comme agent de refroidissement

Abrégé

[Problem] To efficiently heat water using the heat of a steam drain, and to control the temperature of the water obtained. [Solution] A heat recovery apparatus (100) for recovering a steam drain comprising steam used in another apparatus and/or comprising a drain resulting from the condensation of steam used in the other apparatus, and thereby recovering the heat contained in the steam drain, the heat recovery apparatus being provided with: a pump (3) for circulating water stored within a tank (6), via circulation pipes (P31 to P34); an ejector (2) for suctioning the steam drain, admixing same with the circulated water and recovering the steam drain, the ejector being provided between the circulation pipes (P31 to P34); and a ballcock (4) and temperature control unit (5) for controlling the temperature of the water inside the tank (6) by replenishing the inside of the tank (6) with tap water after some of the water inside the tank (6) has been discharged when the water inside the tank (6) has reached a pre-set first temperature (T1).

Classes IPC  ?

• F22D 11/06 - Aménagement des pompes d'alimentation en eau pour retour des condensats à la chaudière