Abstract: A method of constructing an exhaust heat recovery boiler. A required number of heat transfer tube group panel modules (20) are produced in an appropriate size according to design specifications of HRSG, where the heat transfer tube group panel modules (20) each have a large number of heat transfer tubes (6), heat transfer tube group panels (23) constituted of upper and lower collection tubes (7, 8) for the heat transfer tubes (6), a casing (1) for the heat transfer tube group panels (23), heat transfer tube group panel supporting beams (22) provided outside a ceiling wall portion of the casing (1), and a vertical and horizontal module frames (24, 25) provided outside the casing (1). Main frames for supporting the modules (20), including main pillars (33), main beams (34), and bottom wall portion pillars (36), are constructed in advance in a construction site of the heat recovery boiler (HRSG).

Abstract: The invention provides an exhaust heat recovery boiler construction method in which a necessary number of heat exchanger tube bundle panel modules each having heat exchanger tube bundle panels including a number of heat exchanger tubes and upper and lower headers of the heat exchanger tubes, a casing of the heat exchanger tube bundle panels, heat exchanger tube bundle panel support beams located outside the ceiling wall of the casing, and vertical and horizontal module frames located outside the casing, are prepared so as to have a proper size according to the design specifications of the heat recovery boiler, main frames including main columns, main beams, and bottom wall columns for supporting the modules are constructed in advance at a construction site of the exhaust heat recovery boiler (heat recovery boiler), and the modules are transported and hung down by a crane between the main columns adjacent to each other at the construction site to set the support beams of the modules at the installation height