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Method and apparatus for high acid content feed for making diesel and aviation fuel

Patent Number: 8440875
Publication Date: 2013-05-14
Inventor:

A method of making a diesel fuel from a renewable feedstock is described. Ammonia or an amine compound is used to neutralize the organic acids in the renewable feedstock. The ammonia or amine compound is removed from the product mixture before the isomerization zone so that it does not affect the isomerization ...

Olefin isomerization and metathesis catalyst

Patent Number: 8440874
Publication Date: 2013-05-14
Inventors: ; ; ; ; ;

A process for the production of propylene, the process including: contacting ethylene and a hydrocarbon stream comprising 1-butene and 2-butene with a bifunctional isomerization-metathesis catalyst to concurrently isomerizes 1-butene to 2-butene and to form a metathesis product comprising propylene; wherein the bifunctional isomerization-metathesis catalyst comprises: a catalyst compound may include at least one element selected from tungsten, tantalum, niobium, molybdenum, nickel, ...

Process for producing olefins

Patent Number: 8440873
Publication Date: 2013-05-14
Inventors: ; ;

Process for producing mono-olefins(s) from a feedstock A containing ethanol and propanol, wherein ethanol and propanol are dehydrated into the corresponding same carbon number olefins. The process is performed by 1. reacting feedstock A in a vapor phase dehydration reactor wherein the ethanol and propanol alcohols are converted into a product stream B comprising ethylene, propylene, ethers, water and unconverted alcohols, 2. cooling the product stream B, 3. disengaging the cooled product ...

Process for preparing poly alpha olefins and lubricant basestocks from Fischer-Tropsch liquids

Patent Number: 8440872
Publication Date: 2013-05-14
Inventors: ; ;

A process for preparing poly alpha olefins from a Fisher-Tropsch product. The process comprising the steps of contacting a C₅-C₁₈fraction of an alpha-olefinic hydrocarbon mixture produced from thermal cracking a C₁₆-C₄₀Fisher-Tropsch product with an oligomerization catalyst under conditions to produce an oligomerized product; and fractionating the oligomerized product to obtain a fractionated product having an average carbon number greater than ...

Tetramer production apparatus and process relating thereto

Patent Number: 8440871
Publication Date: 2013-05-14
Inventor:

One exemplary embodiment can be a tetramer production apparatus. The apparatus can include a fractionation zone and an oxygenate removal zone. The fractionation zone can produce a distillation product including one or more C6 hydrocarbons for producing one or more C12 compounds. The oxygenate removal zone may remove one or more oxygenate compounds from the distillation product passed through the oxygenate removal ...

One-step catalytic conversion of biomass-derived carbohydrates to liquid fuels

Patent Number: 8440870
Publication Date: 2013-05-14
Inventor:

The invention relates to a method for manufacture of hydrocarbon fuels and oxygenated hydrocarbon fuels such as alkyl substituted tetrahydrofurans such as 2,5-dimethyltetrahydrofuran, 2-methyltetrahydrofuran and mixtures thereof. The method generally entails forming a mixture of reactants that includes carbonaceous material water, a metal catalyst and an acid reacting that mixture in the presence of hydrogen. The reaction is performed at a temperature and for a time sufficient to produce a ...

Separation of olefins from olefins/paraffins mixed gas

Patent Number: 8436223
Publication Date: 2013-05-07
Inventor:

The present invention relates to a method for the separation of C₄olefins and C₄paraffins from a C₄hydrocarbon mixed gas including butene-1, trans-2- butene, cis-2-butene, normal butane, isobutane, etc. The method of the present invention produces C₄olefins with high purity by introducing a gaseous C₄mixture into the adsorption tower loaded with adsorbent selectively adsorbing olefins to adsorb C₄olefins and to ...

Pretreatment of a phosphorus-modified zeolite catalyst for an aromatic alkylation process

Patent Number: 8436222
Publication Date: 2013-05-07
Inventors: ; ;

This invention relates to a process for pretreating a zeolite catalyst, specifically a zeolite which has been modified with phosphorus. The catalyst may be used in a process for alkylation of aromatics, specifically toluene methylation. The pretreatment is first to contact the catalyst with the process reactants used in a process for alkylation of aromatics for at least two hours at conditions to produce an alkylated aromatic product and then with a gaseous stream containing oxygen at a ...

Processes for upgrading fischer-tropsch condensate olefins by alkylation of hydrocrackate

Patent Number: 8436221
Publication Date: 2013-05-07
Inventors: ;

Processes for upgrading Fischer-Tropsch condensate olefins by alkylation of hydrocrackate may involve providing an olefin enriched condensate stream and further providing a Fischer-Tropsch derived hydrocarbon stream comprising wax, hydrocracking the latter Fischer-Tropsch hydrocarbon stream to provide a distillate enriched hydrocracked product comprising isoparaffins, and alkylating the olefins with the isoparaffins in an alkylation zone to provide an alkylate product. The alkylate product ...

Processes and systems for demethanization of brominated hydrocarbons

Patent Number: 8436220
Publication Date: 2013-05-07
Inventor:

Process and systems for converting lower molecular weight alkanes to higher molecular weight hydrocarbons that include demethanization of brominated hydrocarbons, wherein the brominated hydrocarbons are formed by reaction of the lower molecular weight alkanes with ...

Method of generating a non-plugging hydrate slurry

Patent Number: 8436219
Publication Date: 2013-05-07
Inventors: ; ;

Method for reducing loss of flow due to hydrate solids deposits and wax deposition in a pipeline without the aid of chemicals and system for transporting a flow of wellstream hydrocarbons containing water, using a main pipeline and a cold-flow reactor connected to the main pipeline or within or forming a part of the pipeline, wherein at least a portion of the wellstream is fed to the cold-flow reactor. Also provided is a method for preventing hydrate nucleation and growth in a pipeline and ...

Para-xylene-separation with aluminosilicate X-type zeolite compositions with low LTA-type zeolite

Patent Number: 8431764
Publication Date: 2013-04-30
Inventors: ; ;

A process for separating para-xylene from a mixture of C₈alkylaromatics comprises contacting the mixture of C₈alkylaromatics with a zeolitic binder-converted composition comprising (a) a zeolite X composition having at least a first zeolite X having a mean diameter not greater than 2.7 microns, and a second zeolite X, wherein the second zeolite X is obtained by converting a binder material to the second zeolite X and the binder material is in a range from 5 to 50 wt ...

Separation method of aromatic compounds comprising simulated moving bed xylene mixture pre-treatment process and additional xylene isomerization process

Patent Number: 8431763
Publication Date: 2013-04-30
Inventors: ;

Disclosed is a method for separating aromatic compounds using a simulated moving bed adsorptive chromatography, comprising a sulfolan process that is a non-aromatic compound removing process, a benzene/toluene fractionation process, an aromatic compound fractionation process, a selective toluene disproportionation process, a transalkylation process, a simulated moving bed para-xylene separation process and a xylene isomerization process, wherein the method is characterized by further ...

Production of high purity butene-1 from C4 olefins/paraffins mixed gas

Patent Number: 8431762
Publication Date: 2013-04-30
Inventor:

The present invention relates to a hybrid process comprising an adsorption process and a distillation process for the separation of butene-1 from a C4 hydrocarbon mixture gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. The above hybrid process comprises introducing a gaseous C4 mixture into the adsorption tower loaded with adsorbents which adsorb olefins selectively to discharge C4 paraffins to the outlet of the tower, desorbing C4 olefins selectively ...

Hydrocarbon dehydrogenation with zirconia

Patent Number: 8431761
Publication Date: 2013-04-30
Inventors: ; ; ;

A method for obtaining an olefin is disclosed, the method comprising subjecting a paraffin to dehydrogenation in the absence of oxygen and in the presence of a catalyst comprising a crystalline substrate, to obtain an olefin. The catalyst includes an inert stabilizing agent for maintaining the catalyst crystal structure. The catalyst may be regenerated by being subjected, in air, to a temperature between about 550° C. and about 750° C., for a period of time between about 15 minutes and ...

Hydrocarbon conversion using an improved molecular sieve

Patent Number: 8431760
Publication Date: 2013-04-30
Inventors: ; ;

The present invention comprises a hydrocarbon-conversion process using an improved MgMxAPSO-31 molecular sieve which demonstrates a favorable combination of conversion and selectivity in aromatics conversion. The sieve comprises at least two divalent elements with narrow specific concentration limits in the framework structure having defined crystal characteristics. The element Mx may comprise one or more of manganese, cobalt, nickel, iron and ...

Heavy alkylbenzene transalkylation operating cost reduction

Patent Number: 8431759
Publication Date: 2013-04-30
Inventor:

A process for increasing the production of monoalkylbenzenes is presented. The process includes utilizing a transalkylation process to convert dialkylbenzenes to monoalkylbenzenes. The transalkylation process recycles a portion of the effluent stream from the transalkylation reactor back to the feed of the transalkylation reactor. The recycled dialkylbenzenes and a portion of the recycled benzene are converted to ...

Processes for increasing the overall aromatics and xylenes yield in an aromatics complex

Patent Number: 8431758
Publication Date: 2013-04-30
Inventors: ;

Processes for increasing overall aromatics and xylenes yield in an aromatics complex are provided. A C₈+ aromatics stream from an aromatics-rich reformate is separated into a C₈aromatics fraction and a C₉+ aromatics fraction comprising higher alkyl group-substituted C₉and C₁₀aromatics. The C₉+ aromatics fraction is separated into a lighter boiling, higher alkyl group-substituted C₉or C₉/C_{10 ...}

Method for making renewable fuels

Patent Number: 8431757
Publication Date: 2013-04-30
Inventors: ;

Multiple catalytic processing stations enable a method for producing volatile gas streams from biomass decomposition at discrete increasing temperatures. These catalytic processing stations can be programmed to maximize conversion of biomass to useful renewable fuel components based on input feedstock and desired ...

Conversion catalysts and processes having oxygenate and water stability

Patent Number: 8431756
Publication Date: 2013-04-30
Inventors: ; ;

This invention relates to a method for processing oxygenated hydrocarbons to form a hydroisomerized and/or dewaxed hydrocarbon product having a reduced oxygen content, an increased iso-paraffin content, a low n-paraffin content, and good cold flow properties. Advantageously, the method can utilize a zeolitic base catalyst, optionally but preferably containing at least one activated metal component, and a hydrothermally-stable binder such as ...

Combined first and second generation biofuels process

Patent Number: 8431755
Publication Date: 2013-04-30
Inventor:

A process to integrate a first biofuels process and a second generation cellulosic biofuels process is provided. The pyrolysis means which produces the char stream and a bioliquid stream. The low pressure hydrotreating component, a high pressure hydrotreating component, the low pressure hydrotreating component which produces the hydrocarbon stream, the high pressure hydrotreating component which produces the steam stream and bioliquid stream. A distillation means, which produces a green ...

Selective CO oxidation for acetylene converter feed CO control

Patent Number: 8431094
Publication Date: 2013-04-30
Inventors: ;

A system and process for acetylene selective hydrogenation of an ethylene rich gas stream. An ethylene rich gas supply comprising at least H₂S, CO₂, CO, and acetylene is directed to a first treatment unit for removing H₂S and optionally CO₂from the gas stream. A CO oxidation reactor is used to convert CO to CO₂and form a CO-depleted gas stream. A second treatment unit removes the CO₂from the CO-depleted gas stream and an ...

Isomerization of wet hexanes

Patent Number: 8426666
Publication Date: 2013-04-23
Inventor:

A method to isomerize one or more wet hexanes in the presence of a catalyst comprising tungsten, zirconium and a Group VIII metal is ...

Process and plant for producing hydrocarbons

Patent Number: 8426665
Publication Date: 2013-04-23
Inventors: ; ; ;

When producing hydrocarbons from fatty acid esters contained in fats or fat oils, the fatty acid esters initially are split up by hydrolytic decomposition into a first stream containing crude alcohol and water and a second stream containing free fatty acids, and subsequently the free fatty acids of the second stream are hydrogenated with hydrogen to obtain saturated ...

Process for producing ethylene

Patent Number: 8426664
Publication Date: 2013-04-23
Inventors: ; ;

Process for producing ethylene from an ethanol feedstock A by (1) reacting the ethanol feedstock A in a vapor phase reactor wherein the ethanol is converted at a temperature between 160 and 270° C. and at a pressure of above 0.1 MPa but less than 4.5 MPa, into a product stream B containing ethylene, diethyl ethers, water and unconverted ethanol, (2) cooling the product stream B, (3) disengaging the cooled product stream B in a separation unit to give a first stream C containing ethylene ...

Catalytic conversion of alkylaromatic compounds

Patent Number: 8426663
Publication Date: 2013-04-23
Inventors: ;

A process for catalytically converting alkylaromatic compounds in a hydrocarbon feedstock, the process comprising passing a hydrocarbon feedstock including at least one alkylaromatic compound, wherein the alkyl group comprises at least two carbon atoms, through a reactor containing a crystalline silicate catalyst to produce an effluent including at least one aromatic compound and at least one light olefin selected from C₂and C_{3 ...}

Processes for reduction of alkylation catalyst deactivation utilizing stacked catalyst bed

Patent Number: 8426662
Publication Date: 2013-04-23
Inventors: ;

Alkylation systems and methods of minimizing alkylation catalyst regeneration are discussed herein. The alkylation systems generally include a preliminary alkylation system adapted to receive an input stream including an alkyl aromatic hydrocarbon and contact the input stream with a first preliminary alkylation catalyst disposed therein to form a first output stream. The first preliminary alkylation catalyst generally includes a Y zeolite. The systems further include a first alkylation ...

Dilute liquid phase alkylation

Patent Number: 8426661
Publication Date: 2013-04-23
Inventor:

Methods of forming ethylbenzene are described herein. In one embodiment, the method includes contacting dilute ethylene with benzene in the presence of an alkylation catalyst to form ethylbenzene, wherein such contact occurs in a liquid phase reaction zone and recovering ethylbenzene from the reaction ...

Process for purification of ethylene-containing feedstreams

Patent Number: 8426660
Publication Date: 2013-04-23
Inventors: ; ;

A method for purification of ethylene-containing feedstreams from steam crackers or fluid catalytic crackers (FCC), wherein the feedstreams further comprises hydrogen, carbon monoxide, acetylenes, oxygen, nitric oxides, is disclosed. The method comprises contacting an ethylene-comprising gas stream with a Ru-based catalyst at reaction temperatures of at least 120°C. The process results in an ethylene-containing feedstream wherein the ethylene is essentially free of acetylenes, nitric ...

Vinyl terminated higher olefin polymers and methods to produce thereof

Patent Number: 8426659
Publication Date: 2013-04-23
Inventors: ; ;

This invention relates to higher olefin vinyl terminated polymers having an Mn of at least 200 g/mol (measured by ¹H NMR) including of one or more C₄to C₄₀higher olefin derived units, where the higher olefin vinyl terminated polymer comprises substantially no propylene derived units; and wherein the higher olefin polymer has at least 5% allyl chain ends and processes for the production thereof. These vinyl terminated higher olefin polymers may optionally ...