Process for the reduction of SCR NOx emissions and apparatus therefore

摘要

The invention concerns a process and an apparatus for reducing the content of nitrogen oxides (NOx) in the exhaust gases of diesel engines or turbines for stationary or mobile applications/vehicles in an SCR system by providing a stored source of liquid reducing agent and feeding the stored reducing agent to the exhaust gases, said process comprising transferring the liquid reducing agent from the external storage tank to a membrane storage tank equipped with an inner bellow consisting of a non-permeable flexible membrane, and a hydraulic or pneumatic displacement fluid located outside the inner bellow, filling the flexible inner bellow with liquid reducing agent and transferring the liquid reducing agent from the flexible inner bellow to the exhaust gases.