The condenser releases pressure and inert gases
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Assuming that the inert gas content in the fresh gas remains almost constant, when the pressure at the condenser is high, the amount of inert gas will also decrease, right? Then the amount of circulating hydrogen in the system will also decrease. So will the hydrogen-to-nitrogen ratio increase or decrease?????
If there is only a loss of pressure, it has no effect on the hydrogen-to-nitrogen ratio in the circuit, as both hydrogen and nitrogen will escape in proportion (at the same ratio as that in the circuit)
Theoretically, if no fresh gas is introduced, the hydrogen-to-nitrogen ratio should not change much. However, if fresh gas is introduced, it depends on the hydrogen-to-nitrogen ratio of that fresh gas.
The high pressure released leads to an increase in the gases dissolved in liquid ammonia, and as a result, the amount of gas released from the intermediate tank also increases. This effect is similar to that of increasing the blowing gas flow; with the inert gas entering the system remaining unchanged, the inert gas content in the circulating gas will naturally decrease. As for the hydrogen-to-nitrogen ratio, since the solubility of hydrogen and nitrogen in liquid ammonia is related to the partial pressures of these gases in the recycle gas, the effect of the purge gas volume on the hydrogen-to-nitrogen ratio in the recycle gas is mainly caused by changes in the inert gas content. By performing a simple material balance on the synthesis tower, it is easy to see the effect of changes in the composition of the fresh gas and the inert gas content in the recycled gas on the hydrogen-to-nitrogen ratio in the synthesized gas.