Babcock-Hitachi Kabushiki Kaisha

Isao Waseda

Toshinori Shigenaka

Mitsugi Musashi

Atsuo Kawahara

Yuzuru Yoshimoto

Yoshiki Kitahashi

Toru Nishioka

Tatsuo Kiriyama

Eiiji Murakami

A necessary size and number of modules each obtained by housing a member including heat exchanger tube panels each comprising a heat exchanger tube bundle and headers for the heat exchanger tube bundle, an upper casing of an exhaust heat recovery boiler (HRSG), provided above the heat exchanger tube panels, heat insulators, and heat exchanger tube panel support beams provided on the upper surface of the upper casing into a transportation frame, are prepared according to design specifications of the HRSG, and side casings and a bottom casing except for the ceiling part casing are constructed in advance at a construction site of the HRSG, and the modules are suspended from above between adjacent support beams of the ceiling part to dispose the heat exchanger tube panel support beams of the modules at the set heights of the ceiling part support beams, and the support beams and the ceiling part support beams are connected and fixed via connecting steel plates, whereby the respective modules are transported to the HRSG construction site and can be easily constructed.

Heat exchanger tube panel module, and method of constructing exhaust heat recovery boiler using the same

A method of constructing an exhaust heat recovery boiler. A required number of heat transfer tube group panel modules () are produced in an appropriate size according to design specifications of HRSG, where the heat transfer tube group panel modules () each have a large number of heat transfer tubes (), heat transfer tube group panels () constituted of upper and lower collection tubes () for the heat transfer tubes (), a casing () for the heat transfer tube group panels (), heat transfer tube group panel supporting beams () provided outside a ceiling wall portion of the casing (), and a vertical and horizontal module frames () provided outside the casing (). Main frames for supporting the modules (), including main pillars (), main beams (), and bottom wall portion pillars (), are constructed in advance in a construction site of the heat recovery boiler (HRSG). Each module () is transported to the construction site and lowered by a crane () into between adjacent main pillars (). Supporting beams () of each module () are placed at the height of installation of the main beam (). Then the horizontal module frames (), the main beams (), and the bottom wall portion pillars () are connected and fixed, and the vertical module frames () and the main pillars () are connected and fixed.

Heat transfer tube panel module and method of constructing exhaust heat recovery boiler using the module

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Kure, Japan

Isao Waseda