摘要:
One exemplary embodiment can be a process for alkylating and hydrogenating a light cycle oil. The process can include passing the light cycle oil, one or more C2-C6 alkenes, and hydrogen through a reaction vessel containing an alkylation zone and a hydrogenation zone. Generally, the hydrogen is at least partially comprised from a hydrocarbon product stream from a fluid catalytic cracking zone.
摘要:
The present invention relates to an in-line method for generating comonomer, such as 1-hexene or 1-octene, from monomer, such as ethylene. The comonomer generated is directly transported, without isolation or storage, to a polyethylene polymerization reactor. The in-line method for generating comonomer includes the steps of providing an in-line comonomer synthesis reactor and a downstream gas/liquid phase separator prior to a polyethylene polymerization reactor; feeding ethylene monomer and a catalyst in a solvent to the comonomer synthesis reactor; reacting the ethylene monomer and the catalyst in solvent under reaction conditions to produce an effluent stream including ethylene monomer and comonomer; passing the effluent stream from the comonomer synthesis reactor to the downstream gas/liquid phase separator to separate a gas stream from a bottom stream, wherein the gas stream is a mixture of ethylene monomer, and comonomer; and passing the gas stream to the polyethylene polymerization reactor to provide the necessary comonomer input. The in-line method is useful in the production of LLDPE, and other branched polyethylene based polymers. Some benefits include process simplification and reduced capital and operating costs.
摘要:
Verfahren zur kationischen Polymerisation kationisch polymerisierbarer ethylenisch ungesättigter Monomere in Gegenwart einer oder mehrerer Lewis-Säuren, dadurch gekennzeichnet, dass in Gegenwart eines oder mehrerer substituierter Alkene der Formel (I) polymerisiert wird, worin R 1 für H oder C 1 -C 5 -Alkyl steht, R 2 für C 1 -C 6 -Alkyl steht, X für Halogen, OR 3 oder für OCOR 3 steht, worin R 3 für C 1 -C 6 -Alkyl steht.
摘要:
A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of at least one lanthanide element or yttrium component, which is preferably ytterbium, and at least one platinum-group metal component which is preferably platinum and a refractory-oxide binder having at least one platinum-group metal component dispersed thereon.
摘要:
alpha-Olefins are made in a modified plug flow reactor system by the oligomerization of ethylene using an iron complex of a selected diimine of a 2,6-pyridinecarboxaldehyde(bisimine) or 2,6-diacylpyridine(bisimine) as the oligomerization catalyst. The reactor is modified to add the iron complex at two or more points along the length of the plug flow reactor, the distance between addition points being dependent on the half-life of the active ethylene oligomerization catalyst.
摘要:
A process for oligomerizing at least one heavy olefin having at least 5 carbon atoms per molecule in the presence of at least one co-fed light olefin having less than 5 carbon atoms per molecule is disclosed. The presence of the at least one co-fed light olefin results in increased C6=(C6 olefin) conversion (if present as one of the at least one heavy olefins), increased weight % of C11+ hydrocarbons in the C9+ material of the product and increased cetane of the C9+ material of the product as compared to the oligomerization of the at least one heavy olefin without the co-fed at least one light olefin.
摘要:
A method for producing an alkyl cyclopentadiene by reacting cyclopentadienyl Grignard with an alkyl halide and for converting the alkyl cyclopentadiene to a bis(n-alkyl cyclopentadienyl) Group IV metal dihalide is described.
摘要:
There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises core crystals containing first crystals of a first zeolite and optionally second crystals of a second zeolite having a composition, structure type, or both that is different from said first zeolite and binder crystals containing third crystals of a third zeolite and optionally fourth crystals of a fourth zeolite having a composition, structure type, or both that is different from said third zeolite. If the core crystals do not contain the second crystals of the second zeolite, then the binder crystals must contain the fourth crystals of the fourth zeolite. The zeolite bound zeolite finds application in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportional of toluene, isomerization, and transalkylation reactions.
摘要:
The novel synthetic polyethylene fluids of the present invention are characterized by high viscosity indices (about 94-151 VI), low pour points (about -60 to -10 DEG C), and a kinematic viscosity of about 6 to 28 cSt KV at 100 DEG C. The product compositions compri se polymers having a molecular weight of from about 300 to 30,000 and a high branching index of 151 to 586 branches per 1000 CH2 groups, or BI = 0.18-0.40, wherein the polymer is substantially free of methyl branches. Highly-branched polyethylene fluids that have less than 5 methyl branches per 1000 CH2groups are prepared by polymerizing ethylene in the presence of a catalyst system consisting of [C] and [B], wherein [C] is a catalyst having the empirical formula MX4 and [B] is a co-catalyst having the empirical formula RnA1X3-n, where M is a Group IVB transition metal, X is a halogen anion, R is a C1-C20 alkyl group, and n is 1-2, in the presence of a promoter, wherein the promoter is selected from the group consisting of hydrogen or a Lewis acid such as, for example, FeC13, AlCl3, or mixtures thereof.
摘要:
A method of forming an immobilized and separated Diels-Alder adduct is disclosed. This method includes a Diels-Alder reaction between a surface-supported dienophile and a furan-based diene to form an immobilized and separated Diels-Alder adduct. The reversible Diels-Alder reaction can separate a furan-containing compound in a mixed chemical stream with the surface-supported dienophile being a n-propylmaleimide alkylated on a silica support and a furan-based diene being methyl furan.