Method for the suppression of soot formation in an ATR or POX reactor
AssigneeCasale SA
InventorsLuca Zanichelli, Giacomo Colmegna
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Abstract
A method for the suppression of soot formation during the partial oxidation of a hydrocarbon-containing gaseous feed, in the presence of steam and in an ATR reactor or in a POX reactor, the method comprising the addition of gaseous carbon dioxide to the hydrocarbon-containing gaseous feed before entry into the reactor. A method for determining a minimum steam to carbon ratio required for scot-free operation is also disclosed.
Claims11
A method, comprising:
- suppressing soot formation during the partial oxidation of a hydrocarbon-containing gaseous feed, in the presence of steam and in an ATR reactor or in a POX reactor,
- wherein the suppression of the soot formation comprises adding gaseous carbon dioxide as a soot suppressor to the hydrocarbon-containing gaseous feed before entry into the reactor.
A method for controlling a partial oxidation process in an ATR or POX reactor, the process being carried out in the presence of steam and with addition of carbon dioxide to a hydrocarbon-containing gaseous feed of the process before entry into the reactor, the method including the determination of a minimum steam to carbon ratio for soot-free operation in the presence of added CO2, according to:
- (S/C)lim,CO2=(S/C)lim−ζ·(mCO2/mC)
- wherein:
- (S/C)lim is the minimum steam to carbon ratio for soot-free operation of the process when performed with the gaseous feed without addition of CO2;
- (S/C)lim, CO2 is the minimum steam to carbon ratio for soot-free operation of the process when performed with addition of CO2 to the gaseous feed;
- (mCO2/mC) denotes the ratio of moles of CO2 added to the feed over the moles of carbon contained in the feed before addition of CO2;
- ζ is in the range 0.4 to 0.6.
Dependencies are inferred from the claim text.