Pollution issue of the lubricating oil in the exhaust hydrogen recovery compressor

It means that the molding machines used for environmental protection in the capital don’t experience much pressure, unless the diaphragm ruptures and goes unnoticed! Of course, another piston-type design that used nitrogen and hydrogen seals was also employed. Since it was a prototype from those days, it encountered many problems during operation; the pressure generated by the nitrogen and hydrogen seals could not be guaranteed to be absolutely stable. Additionally, the volume of gas used in these seals was relatively small, making it easy for the pressure from the exhaust manifold to back up, which in turn led to contamination of the lubricating oil. This contamination caused corrosion of the sealing elements, creating a vicious cycle. One way to solve this problem is: hydrogen sealing to avoid using recycled hydrogen (even below the detection limit, HCL is still present) ； The hydrogen seal and nitrogen seal separate pipelines are flushed and vented in dedicated low-pressure equipment.

First, it is necessary to determine whether it is pure hydrogen; regardless of whether chlorine silane is present in the hydrogen, nitrogen sealing must be ensured. The pressure in the nitrogen-filled chamber should be higher than that in the chamber where leaks occur, so as to prevent leaked gas from entering the crankcase. In this way, chlorosilane gas will not contaminate the lubricating oil.

The key lies in the reliability of the filler; as long as the filler is reliable, there’s no problem