| 摘要 |
Use of supercritical CO2 for cleaning long, narrow pipes with a cross sectional area of less than 1000 square mm and a length of more than 500 meter. Cleaning is performed by adding a fluid to the lumen of the pipe (140); providing the fluid (2) in a supercritical state (6) inside the lumen; and subsequently, as a flushing step, while the fluid is in the supercritical state or in a liquid state, displacing the fluid (2) in the lumen of the pipe (140) and out of lumen of the pipe at a speed that causes a turbulent flow of the fluid, thereby flushing particles out of the lumen. |
