【Ethylene cracking】SCR module of the denitration system in the convection section of the cracking furnace

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The SCR module is a key component of the denitration system in the convection section of the pyrolysis furnace; its manufacturing precision requires extremely high standards. For a module with a total size of 25.8 meters, it is necessary to ensure that the flatness of its wall panels is less than 5 mm, that the deviation between any adjacent columns is less than 3 mm, and that the overall dimensional deviation of the module is less than 5 mm. For us, a company that has been engaged in construction projects for a long time, this represents a very significant challenge. Moreover, both the upper and lower sections of the SCR module are manufactured by other manufacturers; therefore, the final assembly process is particularly crucial. This requires us to strive for excellence during production and to strictly control any deviations in the dimensions of the modules, as only in this way can we ensure that the modules are installed correctly from the first attempt.