Common faults of air separation unit

1. The requirements of molecular sieve adsorber, electric heater and other equipment in place are the same as those of air cooling column of pre cooling system. 2. Process piping shall be constructed in strict accordance with relevant specifications and design and construction drawings. 3. The air tightness test shall be conducted before the valve is installed, and the test pressure and inspection standard shall be carried out according to the technical requirements of corresponding valves. 4. Pay attention to the direction of switch valve installation. V1201, V1202, V1207 and V1208 are front mounted valves, while V1203, V1204, V1205 and V1206 are reverse mounted valves. When the switch valve is installed, its shaft should be in a horizontal position, and the flange bolts should be evenly cross tightened. 5. The pipeline of pressure equalizing valve V1209 should have compensating bend.

The working pressure of the high-pressure oxygen compressor used for filling bottles is high, and it is easy to cause cylinder burning accidents due to improper operation and management. In order to prevent this kind of accidents from happening, the following matters should be paid attention to when using and maintaining: 1) for the parts of the oxygen compressor, the maintenance tools and the hands of the maintenance personnel must be strictly skim and cleaned, finally, clean the carbon tetrachluene thoroughly. When pulling out the piston for overhaul, special attention should be paid to clear the oil stain at the bottom of the piston rod in case of stain the seal. When the sealer and scraper are worn out, they should be replaced in time to prevent them from being oiled; 2) the distilled water used for lubrication must not be interrupted. Distilled water tank should be more than 2m higher than cylinder head, and water level gauge and dripping device should be easy to monitor. The a...