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Why does the data state that the smaller the reaction feed rate, the greater the flow rate of recycle hydrogen?
The documents state that reducing the amount of reactant feed will increase the flow rate of recycled hydrogen – why is that? ?
It is an older unit; the cyclohydrogen machine does not have automatic control. At a constant system pressure, when the feed rate decreases, the vapor pressure of the oil and gas in the system drops while the hydrogen pressure rises. As a result, the pressure drop across the reaction system decreases; at the same rotational speed, the compressor operates further away from the surge point. With the surge prevention valve remaining at its original opening, the compression ratio decreases while the flow rate increases.
Since the total circulation volume of the compressor cannot be too low, a reduction in feed will inevitably increase the circulating hydrogen.