Appeal 2007-1822
Application 10/482,191
The claimed subject matter is reflected in representative claim 1:
1. A process for the preparation of one or more partial
oxidation products, one or more partial ammoxidation
products, or both, of at least one olefinic hydrocarbon A',
comprising
A) subjecting, in a first reaction zone A, at least one
paraffinic hydrocarbon A to a partial dehydrogenation,
oxydehydrogenation, or both, to form a product mixture A
which comprises at least one paraffinic hydrocarbon A and at
least one olefinic hydrocarbon A' formed by the partial
dehydrogenation, oxydehydrogenation, or both,
B) optionally separating from the product mixture A at
least a portion of the components other than the paraffinic
hydrocarbon A and the olefinic hydrocarbon A' to form a
product mixture A', and feeding either the product mixture A,
when said separating is not carried out, or the product
mixture A', when said separating is carried out, to an
oxidation, ammoxidation, or both, zone B and, subjecting the
olefinic hydrocarbon A' to partial oxidation, ammoxidation,
or both, to form a product mixture B which comprises at least
one partial oxidation, ammoxidation, or both, product B of
the at least one olefinic hydrocarbon A',
C) separating partial oxidation, ammoxidation, or both,
product B from the product mixture B in a working-up zone
C and recycling at least a portion of the at least one paraffinic
hydrocarbon A in the product mixture B into the reaction
zone A and
D) intermittently not operating at least a part of the
reaction zone A wherein, while at least a part of the reaction
zone A is not operating, the oxidation, ammoxidation, or
both, in zone B is further carried out and a production loss of
the at least one olefinic hydrocarbon A' while at least a part
of reaction zone A is not operated is at least partly
compensated by feeding at least one olefinic hydrocarbon A'
originating from a source other than the reaction zone A, and
optionally one or more paraffinic hydrocarbons A originating
from a source other than the reaction zone A, to the
3
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: September 9, 2013