Methanol wash spray methanol
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Is there a maximum limit on the amount of methanol sprayed for methanol washing? What are the advantages and disadvantages of high and low interest rates?
Personal understanding: Low: Moisture in the feed gas has not been completely removed, affecting the water content in the system； High: The load on the methanol-water separation system is high
In other words, it’s sufficient to control it based on the designed values.
Too high increases the load on the water separation tower; too low results in a high water content in the system
The spray rate for the unit model 18-30 in our company is 544 Kg/h.
The amount of methanol sprayed generally does not change with load variations. When the temperature of the process gas entering the low-temperature methanol wash is higher than the design value, the circulation rate can be increased appropriately.
When the temperature of the process gas entering the low-temperature methanol wash is higher than the design value, the water content introduced into the system is high, so the amount of methanol used for spraying must be increased accordingly.
Can it be quantified in terms of operation?
The amount of methanol used for spraying is usually fixed, and it has an impact on the water content in the system. The operator can adjust this amount slightly based on experience, aiming for a level that is somewhat higher; too little methanol may lead to freezing in the pipes, while too much can affect the production of carbon dioxide as well as the operation of the water separation tower and the regeneration tower.
Then adjust accordingly based on changes in the system’s air volume!
Well, but a minimum amount must be ensured.