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US 9,963,641 B2Granted
Method of flushing pyrolysis reactor
AssigneeExxonMobil Chemical Patents Inc.
InventorPaul F. Keusenkothen
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Abstract
The present techniques provide a pyrolysis process that is reduced in coke and/or tar formation relative to comparable processes. A flushing fluid is applied or injected directly into a pyrolysis reactor to reduce high levels of coke and tar that can accumulate within the pyrolysis reactor during pyrolysis of the feed.
Claims10
A pyrolysis process, comprising:
- heating a stream in a preheat zone of a regenerative pyrolysis reactor operating in a first flow direction, the regenerative pyrolysis reactor further comprising a pyrolysis reaction zone, a quenching zone, and at least one injection component, wherein the (i) the pyrolysis reaction zone is located downstream of the preheat zone, (ii) the quenching zone is located downstream of the pyrolysis reaction zone, (iii) the injection component is located downstream of the pyrolysis reaction zone, and (iv) upstream and downstream are indicated with respect to the first flow direction;
- pyrolysing the stream in the pyrolysis reaction zone to produce a pyrolysis product, the product being quenched in the quenching zone;
- injecting a hydrocarbon flushing fluid through the injection component into the regenerative pyrolysis reactor to mix with the product, wherein the flushing fluid comprises hydrocarbon;
- and
- removing the product from the pyrolysis reactor.
2 more elements
Dependencies are inferred from the claim text.