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Wet Air Oxidation Offgas Incineration

Wet Air Oxidation Offgas Incineration

Wet Air Oxidation Offgas Incineration

(OP)
Dear all

We are now in the design phase to a ZIMPRO WAO unit in our steam cracker plant.

We are discussing at the moment the final destination of the WAO unit offgas.

Several "difficult" options are on the table:

- Routed to furnaces burners (large amount of offgas, not feasible)
- Routed to furnaces firebox (heat transfer inside firebox problems? bad heat profiles in the firebox?)
- Routed to incinerator (best option! but it is not working properly with acid gases since the composition varies a lot and we can't achieve steady temperature control since methane is used to strip it from the upstream tower. The temperature can go as high as incinerator shutdown temperature or as low as flame disappearance.

What do you have in your plants for this? Any ideas or sugestions or experience on this?

Thanks in advance,
AndreChE

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