Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2005-07-05
2005-07-05
Richter, Johann (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S454000, C568S475000
Reexamination Certificate
active
06914162
ABSTRACT:
A process for preparing hydroformylation products of olefins having from 2 to 8 carbon atoms comprisesa) feeding a hydrocarbon feedstock into a cracking/dehydrogenation zone and subjecting it to thermal and/or catalytic cracking and/or dehydrogenation to give an olefin-containing cracker gas,b) subjecting the cracker gas or fractions thereof to a fractionation to give at least one Ci-olefin-enriched hydrocarbon stream and at least one Ci-olefin-depleted hydrocarbon stream,c) feeding the Ci-olefin-enriched hydrocarbon stream together with carbon monoxide and hydrogen into a hydroformylation zone and reacting it in the presence of a hydroformylation catalyst,d) separating a stream consisting essentially of unreacted Ci-olefin and saturated Ci-hydrocarbon from the output from the hydroformylation zone,e) recirculating at least part of the stream consisting essentially of unreacted Ci-olefin and saturated Ci-hydrocarbon to step b), where i is an integer from to 8.The proposed coupling of the hydroformylation with, for example, a steam cracker allows complete hydroformylation of the olefins produced without olefin losses via the waste gas.
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Geissler Bernhard
Krokoszinski Roland
Müller Rolf
Richter Wolfgang
BASF - Aktiengesellschaft
Novak Druce & Quigg LLP
Richter Johann
Witherspoon Sikarl A.
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