1 sets of rod baffle heat exchanger since 1970 was invented by Philip oil companies in the United States, has been widely used in industrial equipment. In this paper, summarizes the rod baffle heat exchanger system of regenerative heat exchanger in the heat power plant of the two application examples, the experience for reference and reference.
Retrofit scheme is rod baffle heat exchanger instead of vertical bow plate heat exchanger, without changing the original shell heat exchanger, only change the heat exchanger tube core, is still the vertical installation. Shell side fluid adapted the aspirant, accessory equipment and pipe interface are the same. Heat exchange tube from d19mm x 1 mm brass tube replacement d19mm x 2 mm into boiler seamless steel tubes. Transformation technical agreement requirements, unit with full load, water temperature not less than 21 ℃, modified heater performance test data and calculated results are shown in table 2
Rod baffle heat exchanger is a new type of high efficient heat transfer equipment, has strong vibration resistance, small flow resistance, not easy to scale, the advantages of good heat transfer performance and the surface temperature uniformity. It is different from the commonly used vertical bow plate heat exchanger, the heat exchange tube of baffle rod baffle ring group support, in the up and down or so four directions to fix the pipe, the shell side fluid for axial flow, eliminating the fluid induced vibration generated in repeated horizontally through the tube bundle; Shell side flow resistance is small, the velocity increases, the degree of turbulence increases, thus strengthening the heat transfer
