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

A heat exchanger tube bundle panel module for construction of an exhaust heat recovery boiler which generates steam by providing a plurality of heat exchanger tubes inside a gas duct in which gas flows horizontally, the heat exchanger tube bundle panel module for construction of an exhaust heat recovery boiler comprising:

• a plurality of heat exchanger tube bundle panels positioned in a gas flow direction, each including a plurality of heat exchanger tubes, upper and lower headers provided at opposing ends of the heat exchanger tubes, and vibration restraining supports provided at predetermined intervals in a direction transverse to a lengthwise direction of the heat exchanger tubes and configured to prevent contact between adjacent heat exchanger tubes;
• a casing defining the gas duct, the casing having a thermal insulating material provided inside of the casing and covering the outer peripheral portion of the gas duct, the casing comprising a ceiling wall, a bottom wall, and side walls each extending along the gas flow direction of the plurality of heat exchanger tube bundle panels;
• heat exchanger tube bundle panel support beams located outside the ceiling wall of the casing, the heat exchanger tube bundle panel support beams comprising the ceiling wall when the heat exchanger tube bundle panel module is installed in the exhaust heat recovery boiler;
• header supports that penetrate the ceiling wall of the casing and connect the upper headers and the heat exchanger tube bundle panel support beams, the header supports being configured to support the heat exchanger tube bundle panel module;
• vertical module frames comprising vertical support members for the heat exchanger tube bundle panels located outside the casing, the vertical support frames comprising side-walls when the heat exchanger tube bundle panel module is installed in the exhaust heat recovery boiler, the vertical support frame member being provided on a casing side, the vertical support frame further comprising first aseismic braces that connect the end portion inner side of the casing which comprises the ceiling wall and the central portion inner side of the casing which comprises the side wall casing, the first aseismic braces facing the heat exchanger tube bundle panels on at least one of the surface side and the back surface side in the gas flow direction of each heat exchanger tube bundle panel module, and second aseismic braces which connect the end of the casing comprising the bottom wall side and the central portion inner side of the casing comprising the side wall side, the second aseismic braces being positioned to face the heat exchanger tube bundle panels on at least one of the surface side and the back surface side in the gas flow direction;
• and
• horizontal module frames comprising horizontal support members for the heat exchanger tube bundle panels located outside the ceiling wall and outside the bottom wall of the casing, the horizontal module frame comprising the ceiling wall and bottom wall when the heat exchanger tube bundle panel module is installed in the exhaust heat recovery boiler, wherein
• the heat exchanger tube bundle panel module is sized to allow at least two heat exchanger tube bundle panel modules to be positioned adjacent to each other in the horizontal direction of a plane orthogonal to the gas flow of the exhaust heat recovery boiler, the heat exchanger tube bundle panel module being configured to be positioned among main frames of the exhaust heat recovery boiler which are configured to support modules, the main framed comprising main columns, main beams, and bottom wall columns, the main columns and the vertical module frames, the main beams and the horizontal module frame on the ceiling wall side, and the bottom wall columns and the horizontal module frame on the bottom wall, respectively, being configured to be connected and fixed to each other.