How to operate when nitrogen extraction is interrupted in low-temperature methanol washing?
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How to operate when nitrogen extraction is interrupted in low-temperature methanol washing?
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Interruption of nitrogen stripping 1. Causes an increase in the CO2 content in methanol flowing from the H2S concentration tower to the thermal regeneration tower, which increases the load on the thermal regeneration process. This leads to incomplete regeneration of the methanol, resulting in excessive CO2 levels in the washed methanol as well as slightly elevated levels of syngas. If the time is long, stop at the synthesis section. 2. This results in an excessively low H2S content in the acidic gas used for desulfurization recovery, failing to meet the process requirements. If the time is long, stop sulfur recovery
1. If it can recover in a short time, operating at low load is sufficient； 2. If a response cannot be given for an extended period, initiate an emergency shutdown by shutting off the feed gas.