Methods for adjusting reduced oxygen purity
Thread Content
The oxygen purity in the gasified supply air has decreased slightly; how should the gasification furnace be adjusted?
To keep the furnace temperature stable, one simply needs to monitor the furnace temperature and composition, as well as adjust the oxygen level; if the oxygen adjustment is insufficient, reduce the speed of the coal slurry pump
Calculate how much the oxygen flow rate and oxygen purity have decreased, and adjust the oxygen flow rate accordingly. If the oxygen flow rate cannot be increased, calculate the flow rate and reduce the speed of the slurry pump by the given value.
A decrease in oxygen purity means a reduction in the actual load of the gasification furnace; in such cases, while increasing the oxygen-to-coal ratio, the pressure in the gasification furnace should also be reduced appropriately.
In this situation, how should the oxygen-coal ratio be adjusted, and by how much? Could someone please give an example? Thanks
It makes sense to increase the oxygen-to-coal ratio; but why lower the pressure in the gasifier?