Principle of nitrogen production of cryogenic air separation

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...

For the pipeline with pressure, the easiest problem in the production process is the leakage at the connection flange. Once leakage is found, do not tighten the bolt under pressure. There are some reasons for the leakage in the process of operation, such as gasket damage, pipeline under thermal stress, etc. At this time, the problem can't be solved only by twisting the bolt, and often screw the Bolt hard because the leakage has not been eliminated until the bolt is broken and the high pressure gas in the pipe sprays out, causing injury accidents. There have been several factories which have suffered from the accident of Bolt fracture caused by the screw bolt with pressure and the casualty of flange plate flying out. Therefore, it is necessary to strictly abide by the regulation that the screw bolts with pressure are not allowed, and it is not allowed to hold fluke mentality and violate the operation regulations in order to seize time and catch up with tasks.