corrosion protective apparatus of fin tube outside of the heat recovery steam generator

摘要

Module of the present design is reheat recovery steam fin tube outer surface corrosion protection relates to a device, is an auxiliary steam superheater inner supply through the bypass line of the suspended period of the reheat recovery steam drum and a section tangi constant inner heat and reheat recovery steam of the raising the internal temperature and humidity to one so as to suppress the occurrence of corrosion of the fin tube outer surface.; Configuration of the subject innovation is in the reheat recovery steam that is provided to exhaust a secondary steam pipes, so that the recovered heat of the exhaust gas by means of the pipes and the fin tubes of the intermediate pressure and heat, jeoapga opening, the low-pressure section tangi, of the auxiliary steam pipes the structure further comprising: a bypass line on the header and the pipe of the intermediate pressure and heat.; The subject innovation with such a configuration, unlike the conventional method vulnerable to corrosion By use of the supplied auxiliary steam is stopped time preventing corrosion of the fin tube, and therefore written to extend the tube replacement time, the inner surface in the long-term stationary Winter to prevent freezing of the tubes to be heated so that an effect can be stable operation of the plant.