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Process
for removal of carbonyl sulfide from hydrocarbons - Process
to control conversion of C4+ and heavier stream to lighter products
in oxygenate conversion reactions - Processes
for the purification of higher diamondoids and compositions comprising
such diamondoids - Substituted
polycyclic cyclopentadienes and method for their preparation - Alkylation
process - Separating
dimethyl ether from an olefin stream - Reducing
CO2 levels in CO2-rich natural gases converted into liquid fuels
- Circulating
fluid bed reactor system - Synthetic
isoparaffinic premium heavy lubricant base stock - Producing
polyisobutylenes - Process
for separating unsaponifiable valuable products from raw materials
- Conversion
of heavy aromatics - The
oligomerization of C2 C8-olefins - Treating
oxygenate-containing feeds and their use in conversion of oxygenates
to olefins
Process for removal of carbonyl sulfide from hydrocarbons
The invention comprises a process for removal of carbonyl
sulfide from a hydrocarbon, which comprises contacting a
hydrocarbon stream containing carbonyl sulfide with an adsorbent
and then regenerating the adsorbent by passing a heated gas,
containing a hydrolyzing agent. The adsorbent that is regenerated
by using this process retains at least 70% of its capacity for
adsorption of sulfur as compared to fresh adsorbent.
Kanazirev, Vladislav I.; Dangieri, Thomas J.;
Gorawara, Jayant K.
UOP LLC; January 18, 02005
#6843907
Process to control conversion of C4+ and heavier stream to
lighter products in oxygenate conversion reactions
A method for converting heavy olefins present in a product
stream exiting a first reaction zone into light olefins and
carbonaceous deposits on a catalyst without separation of the
heavy olefins from the product stream exiting the first reaction
zone. The method comprises creating the product stream exiting the
first reaction zone, the product stream exiting the first reaction
zone comprising the heavy olefins, moving the product stream
exiting the first reaction zone to a second reaction zone without
separation of the heavy olefins from the product stream exiting
the first reaction zone, and contacting the product stream exiting
the first reaction zone with the catalyst under conditions
effective to form the light olefins, the contacting causing the
carbonaceous deposits to form on at least a portion of the
catalyst.
Vaughn, Stephen N.; Ham, Peter G.; Kuechler, Keith
H.
ExxonMobil Chemical Patents Inc.; January 18, 02005
#6844476
Processes for the purification of higher diamondoids and
compositions comprising such diamondoids
Disclosed are processes for the recovery and purification of
higher diamondoids from a hydrocarbonaceous feedstock.
Specifically disclosed is a multi-step recovery process for
obtaining diamondoid compositions enhanced in tetramantane
components and higher diamondoid components. Also disclosed are
compositions comprising at least about 10 weight percent of
non-ionized tetramantane components and higher diamondoid
components and at least about 0.5 weight percent of non-ionized
pentamantane components and higher diamondoid components based on
the total weight of diamondoid components present.
Dahl, Jeremy E.; Carlson, Robert M.
Chevron U.S.A. Inc.; January 18, 02005
#6844477
Substituted polycyclic cyclopentadienes and method for their
preparation
New polycyclic cyclopentadiene compounds having the formula
(II) wherein the various substituents and symbols R.sub.1,
R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, Z.sup.1 and
Z.sup.2 and "n" have the meaning specified in the
description. These compounds can form metallocene complexes with
transition metals, which have shown unusual properties in the (co)polymerization
of ethylene and alpha-olefins in general ##STR1##
Biagini, Paolo; Vigliarolo, Diego; Borsotti,
Giampietro; Santi, Roberto
Polimeri Europa S.p.A.; January 18, 02005
#6844478
Alkylation process
A process for the alkylation of paraffins with olefins includes
contacting the paraffin with the olefin under alkylation
conditions with a zeolite having an AAI number of at least about
1.0. In a preferred process isobutane is alkylated with
cis-2-butene to produce a high octane (RON) gasoline product
containing trimethylpentane isomers.
Yeh, Chuen Y.; Gao, Xingtao; Angevine, Philip J.
ABB Lummus Global Inc.; January 18, 02005
#6844479
Method of separating dimethyl ether from an olefin stream
This invention is directed to a method of removing dimethyl
ether from an olefin stream. Dimethyl ether is removed from the
olefin stream by first separating the olefin stream into a first
stream comprising dimethyl ether and lighter boiling point
compounds, and a second stream comprising C.sub.4 + olefin and
higher boiling point hydrocarbons. The dimethyl ether is then
separated from the first stream using extractive distillation.
Lattner, James R.; Lumgair, Jr., David R; Kabin,
Jeffrey A.; Nicoletti, Michael Peter
ExxonMobil Chemical Patents Inc.; January 18, 02005
#6844480
Reducing CO2 levels in CO2-rich natural gases converted into
liquid fuels
Provided is a process for converting CO.sub.2 -rich natural gas
into liquid fuel. The process includes introducing a CO.sub.2
-rich natural gas feed stream into a synthesis gas formation
reactor and then forming a synthesis gas. At least a portion of
the synthesis gas is then introduced into a Fischer-Tropsch
reactor. A Fischer-Tropsch process is conducted generating a
Fischer-Tropsch product. A naphtha is separated from the Fischer-Tropsch
product and introduced into a naphtha reformer. Hydrogen
by-product is generated by reforming the naphtha to obtain a
C.sub.6 -C.sub.10 product having a hydrogen to carbon ratio less
than about 2.0. At least a portion of the hydrogen by-product is
recirculated and mixed with the CO.sub.2 -rich natural gas feed
stream. The hydrogen by-product mixes with the CO.sub.2 -rich
natural gas feed stream such that at least a portion of the
CO.sub.2 present in the natural gas feed stream is converted into
additional CO by a reverse water gas shift reaction so that the
synthesis gas derived from the feed stream contains a volume
amount of CO.sub.2 that is less than a volume amount of CO.sub.2
present in the feed stream prior to mixing with the hydrogen
by-product. Finally, the additional CO is converted into
hydrocarbons in the Fischer-Tropsch reactor.
O'Rear, Dennis J.
Chevron U.S.A. Inc.; January 25, 02005
#6846404
Circulating fluid bed reactor system
This invention is to a circulating fluid bed reactor that is
designed so as to have the ability to adjust catalyst holdup
within the reaction zone of the reactor while maintaining
substantially constant catalyst circulation rate through the
reaction zone. The ability to adjust catalyst hold up
independently of catalyst circulation rate provides an advantage
of having the ability to maintain a constant conversion level as
catalyst activity or feed rates change.
Lattner, James R.; Smith, Jeffrey S.; Davuluri,
Rathna P.
ExxonMobil Chemical Patents Inc.; January 25, 02005
#6846405
Synthetic isoparaffinic premium heavy lubricant base stock
A synthetic, isoparaffinic heavy hydrocarbon composition useful
as a heavy lubricant base stock contains hydrocarbon molecules
having consecutive numbers of carbon atoms, is a liquid at
100.degree. C., at which temperature its kinematic viscosity is
above 8 cSt and has respective initial and end boiling points of
at least 850 and 1000.degree. F. (454 and 538.degree. C.). The
branching index BI and the branching proximity CH.sub.2 >4 of
the isoparaffinic hydrocarbon molecules, are such that:
BI-0.5(CH.sub.2 >4)<15; and (a) BI+0.85(CH.sub.2
>4)<45; (b) as measured over the hydrocarbon composition as
a whole.
Johnson, Jack Wayne; Bishop, Adeana Richelle;
Genetti, William Berlin; Ansell, Loren Leon; Fiato, Rocco Anthony
ExxonMobil Research and Engineering Company; January 25, 02005
#6846778
Method for producing polyisobutylenes
Polyisobutenes are prepared by cationic polymerization of
isobutene or isobutene-containing hydrocarbon streams in the
liquid phase in the presence of boron trifluoride as a catalyst,
the catalytic activity of the boron trifluoride being partially or
completely eliminated at a desired time by means of a solid
deactivator, by a process in which the solid deactivator has boron
trifluoride-binding primary, secondary, tertiary and/or quaternary
nitrogen atoms and is insoluble in the reaction mixture.
Wettling, Thomas; Borchers, Dirk; Verrelst, Wim;
Rath, Hans Peter
BASF Aktiengesellschaft; January 25, 02005
#6846903
Process for separating unsaponifiable valuable products from raw
materials
Disclosed are processes for separating valuable products,
including unsaponifiable materials, from any given matrix of raw
materials that is mainly composed of saponifiable components and
unsaponifiable components. Preferred methods include converting
sodium or potassium soaps obtained from the saponification of a
starting material into metallic soaps which have a lower melting
point, and when melted, have viscosity sufficiently low to enable
processing such as by distillation evaporation processes.
Preferred raw materials include animal or vegetable products, as
well as by-products, residues, and waste products from the
processing of animal or vegetable products, such as from food
processing, cellulose processing and the like. Valuable products
which may be obtained by the disclosed processes include sterols,
vitamins, flavonoids, and tocopherols.
Rohr, Rodolfo; Rohr, Raul; Trujillo-Quijano, Jose
Anibal
Resitec Industria Quimica Ltda.; January 25, 02005
#6846941
Method of conversion of heavy aromatics
A method is provided for conversion of heavy alkylaromatic
compounds, particularly those in the C.sub.8 -C.sub.12 range, into
more valuable aromatics of benzene, toluene and xylene utilizing a
toluene disproportionation unit containing a nickel, palladium or
platinum-modified mordenite catalyst. The method allows large
amounts of these heavy alkylaromatic compounds to be processed
without adversely affecting catalyst activity or catalyst life.
This is accomplished by introducing the heavy alkylaromatic
compounds into the reactor at constant reaction severity
conditions and maintaining those conditions during conversion.
Xiao, Xin; Butler, James R.
Fina Technology, Inc.; January 25, 02005
#6846964
Method for the oligomerization of C2 C8-olefins
C.sub.2 -C.sub.8 -olefins are oligomerized in a process in
which a stream of an olefin-containing hydrocarbon mixture is
passed over a heterogeneous, nickel-containing oligomerization
catalyst in n successive adiabatically operated reaction zones,
where n.gtoreq.2, and the hydrocarbon mixture experiences a
temperature increase 66 T.sub.react in each reaction zone and the
hydrocarbon mixture enters the first reaction zone at a
temperature T.sub.in and before entering each further reaction
zone is cooled to a temperature which in each case may be up to
20.degree. C. above or below T.sub.in, and the relative catalyst
volumes of the individual reaction zones are such that the
difference in .DELTA.T.sub.react between any two reaction zones is
not more than 20.degree. C.
Schulz, Ralf; Walter, Marc; Neumann, Hans-Peter;
Brox, Wolfgang
BASF Aktiengesellschaft; January 25, 02005
#6846965
Method and apparatus for treating oxygenate-containing feeds and
their use in conversion of oxygenates to olefins
A feed vaporization process and apparatus for oxygenate to
olefin conversion is provided which uses a vapor-liquid
disengaging drum to separate non-volatiles and/or partial
non-volatiles from volatiles in the oxygenate feed and produce a
vaporized effluent that is reduced in non-volatiles and/or partial
non-volatiles while at the same time maintaining the effluent at
optimal temperature and pressure as a feed for oxygenate to olefin
conversion.
Lumgair, Jr., David Ritchie; Beech, James H.;
Nicoletti, Michael Peter
ExxonMobil Chemical Patents Inc.; January 25, 02005
#6846966
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