Management of cryogenic air separation equipment

To determine whether the heat exchanger has thermal scale: a. View the last 3 to 6 months of the heat exchanger convergence temperature (gas temperature inlet water temperature) annual convergence temperature rise greater than 2 ℃ per year. b. If the convergence temperature has increased significantly more than 0.5 ℃ per month, indicating the existence of problems. Treatment options. Slight thermal scale (convergence temperature rise less than 0.5℃/month): firstly reduce the concentration of...

1. Before filling with pearlite, the water accumulated on the foundation surface of air separation unit must be removed, dried with hot air, and all manholes shall be closed. 2. When filling pearlite, all containers and pipes in the cold box should be inflated and kept at 50kPa pressure, then slightly open the valve of each meter pipeline, and all thermometers should be electrified to check whether the thermometer cable is damaged during the filling process. 3. The filled pearlite shall not be mixed with combustibles. 4. When filling with pearlite, coarse mesh or pearlite pouring device should be set at the manhole on the top of the cold box to prevent whole bag pearlite from entering the cold box. 5. After the pearlite is filled, the manhole shall be sealed.