Oxygen content and CO control under normal operating conditions of the hydrogenation unit’s heater
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For the heating furnaces in hydrogenation units, the load on these furnaces is very high at startup, but it is low under normal operating conditions; meanwhile, the oxygen and CO levels in the flue gas are on the high side. Are there any good solutions to this problem?
Our hydrogenation furnace doesn’t have this problem. Is the design on yours a bit too large?
It’s not reasonable to claim that the oxygen content is high; normal adjustment of the dampers and negative pressure should suffice. If the CO level is high, consider reducing the number of burners, adjusting the flame combustion conditions, and trying again with adjusted negative pressure
Is it under high load or low load, with high levels of oxygen and carbon monoxide?
If the furnace load is low, it is possible to turn off a few burners or reduce the flow rate of the burners’ manual valves, thereby increasing the pressure of the fuel gas in front of the furnace; adjusting the oxygen level again should help.
The dampers are almost completely closed, with an oxygen level of 8-10%
The oxygen level is high; check to see if all the burners’ air valves are fully closed. Or add a few more burners
Is there air leakage from the furnace body, such as through the fire viewing holes, the permanent light valve, or other similar openings?~
There’s air leakage in the furnace! ! Does the blower have variable frequency? If the blower has variable frequency, oxygen level control should not be a problem