When there is no pressure in the hydrogenation reaction system, nitrogen is fed into the system using a new hydrogen generator
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Operating condition: The pressure in the reaction system is zero; medium-pressure nitrogen cannot be used, so only low-pressure nitrogen is available. (The new hydrogen compressor features two-stage compression.) Phenomenon: After starting up the new hydrogen compressor, it was found that the pressure at its first-stage inlet was very low, and it was barely detectable on the on-site dashboard. The remote display shows approximately 0.04 Mpa. At this point, the return valve is fully open, as are the inlet and outlet valves. The load switch is set at 50%, and the compression rate of the compressor is high. How should this be adjusted? Is it possible to reduce the flow rate at the secondary outlet valve in order to build up pressure first and then adjust it to the appropriate level? ?
Judging from the symptoms, it seems that the amount of nitrogen piping available is insufficient; as soon as the compressor starts operating, there is no pressure
The pipeline pressure in your plant is low; once the compressor starts operating, the pressure drops rapidly. At this point, the compressor’s circulation valve is gradually opened, and both the inlet and outlet valves of the compressor are fully opened. As the inlet pressure rises, nitrogen is slowly introduced into the system to maintain a stable pressure at the compressor’s outlet.
By circulating heat in that way, you can’t get it out; the compressor cylinder will likely overheat in no time. A high compression ratio requires an appropriate medium – if too much nitrogen is supplied by the new hydrogen machine, current levels rise excessively, while if too little nitrogen is used, the heat cannot be removed, which makes things difficult to handle
Your approach will result in the cylinder overheating, and the inlet and outlet must be fully opened.
Are you using nitrogen that was originally intended for replacement units? If so, the wire is thin and the pressure is low; the pressure disappears as soon as it’s turned on. Personally, I feel that if this nitrogen is used, there’s no need to turn it on at all.