Why does the new hydrogen compressor have an oil injector, while the feed gas compressor does not?
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Why does the new hydrogen compressor have an oil injector, while the feed gas compressor does not?
It depends on whether the compressor accessories require lubricant
One is oil-free lubrication while the other is oil-lubricated; their sealing structures are different.
It’s not always possible to switch to oil-free lubrication; factors such as pressure ratio, outlet pressure, and the impact of lubricant on the process must be taken into consideration
I asked the mechanic before; he said there are two theories – one is that lubrication with an oil injector is necessary, and the other is that it isn’t. So for a while we turned on the oil injector for a certain period of time before starting the machine, and then stopped it once the compressor started running.
Due to the relatively high manufacturing costs and requirements for oil-free lubrication, as well as the high repair costs in case of failures, it is suitable for use in air compressors with low pressure. For high-pressure air compressors, however, using an oil injector is a more reliable approach to ensure stable operation. True oil-free lubrication involves using materials such as resins that can provide lubricating effects, or enclosing lubricant within a structure; however, this approach remains unreliable under conditions of long operation periods and high pressures at present. Moreover, the choice of lubricant depends on your medium; some air compressor mediums require that no lubricating oil be mixed in, so oil-free lubrication must be used.