Urgently analyze the reasons for high gas flow in stable positions.
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Recently, as the workshop reduced the flow rate of the pre-boost dry gas at the reaction unit, the flow rate of the purge gas at that unit increased from 11,000 Nm3/h to 13,000 Nm3/h; accordingly, the amount of supplementary absorption gas used was also reduced slightly. No significant adjustments were made to the bottom temperature of the distillation column, and there were no major fluctuations in the top pressure; it was merely an increase in the amount of gas used for separation, with no substantial impact on the quality of the dry gas product. Are there any methods or adjustments that can reduce the amount of gas produced during separation, while still ensuring that the liquefied gas C5 and the dry gas C3+C4 meet the required standards? All the amazing SeaUser experts, please come and discuss this. Thank you! ! !
The temperature at the bottom of the desorption tower is just right now; if it drops any further, the liquefied gas will contain C2 compounds.
The reason has been found: the supplemental absorption dose is too high, resulting in an excessive absorption load; there is some over-absorption.
Reducing the pressure increases the dry gas volume, thereby reducing the gas-phase load on the absorption tower
Yes, but the proportion of absorbed dose is still relatively high.