Pressurized liquid nitrogen (LN2) can be used as a highly effective means for completely and rapidly removing the most tenacious deposits encountered in petroleum refinery process equipment. As a result, significant improvements can be seen in process flow rates and control and in process energy and pollution management. In addition, the use of a non-water based cleaning method ensures that there will not be any reactions with the deposit and that there will be minimal waste streams or pollution to the surrounding area.
In this paper, a detailed description is given of the NitroLance™ Ultra High Pressure liquid nitrogen cleaning system, which uses a controlled stream of liquid nitrogen at pressures up to 55,000 psig and temperatures down to -250 ºF to penetrate and breakup just about any deposit.
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