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| Number | Title | Issue Date |
| 6388152 | Process for producing polypropylene from C3 olefins selectively produced in a fluid catalytic cracking process A process for producing polymers from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is introduced into a process unit comprised of a reaction zone, a stripping zone, a... | 05/14/2002 |
| 6379536 | NOx reduction compositions for use in FCC processes Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Gr... | 04/30/2002 |
| 6379531 | Zeolite SSZ-52 The present invention relates to new crystalline zeolite SSZ-52 prepared using a quaternary ammonium cation templating agent having the structure ##STR1## where X-- is an anion which is not detrimental to the formation of the SSZ-52. SSZ-52 is useful in c... | 04/30/2002 |
| 6358401 | Apparatus and procedures for replenishing particulate materials used in industrial processes Injection of particulate materials into industrial processes can be improved through use of a vessel mounted on a weighing device and which is vented through use of two separate and distinct valves. Optionally, a predetermined pressure in the vessel is ma... | 03/19/2002 |
| 6350428 | Preparation of zeolite-bound FAU structure type zeolite and use thereof This invention relates to a process for producing zeolite-bound FAU structure type zeolite having excellent mechanical strength and containing reduced amounts of zeolite P and the use of the zeolite-bound FAU structure type zeolites produced by the proces... | 02/26/2002 |
| 6339180 | Process for producing polypropylene from C3 olefins selectively produced in a fluid catalytic cracking process A process for producing polypropylene from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystal... | 01/15/2002 |
| 6315890 | Naphtha cracking and hydroprocessing process for low emissions, high octane fuels The invention is related to a two step process wherein the first step comprises cracking an olefinic naphtha resulting in a cracked product having a diminished total concentration of olefinic species. The second step comprises hydroprocessing at least a p... | 11/13/2001 |
| 6313366 | Process for selectively producing C3 olefins in a fluid catalytic cracking process A process for producing propylene from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore di... | 11/06/2001 |
| 6306286 | IM-5 phosphorus zeolite, catalytic composition, its preparation and its use in catalytic cracking An IM-5 zeolite that is modified by adding phosphorus that is optionally dealuminified, preferably in aluminosilicic form, and that contains at most 10% by weight of phosphorus, a composition that contains it, its processes for preparation and its applica... | 10/23/2001 |
| 6300537 | Method for the use of new silicoaluminophosphas having an AEL structure to convert naptha to C2 to C4 olefins Disclosed are silicoaluminates (SAPOs) having unique silicon distributions, a method for their preparation and their use as naphtha cracking catalysts. More particularly, the new SAPOs have a high silica:alumina ratio and favorable Si atom distribution.... | 10/09/2001 |
| 6280607 | NOx reduction compositions for use in FCC processes Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Gr... | 08/28/2001 |
| 6258990 | Process for producing polypropylene from C3 olefins selectively produced in a fluid catalytic cracking process from a naphtha/steam feed A process for producing polymers from C2 -C4 olefins selectively produced from a catalytically-cracked or thermally-cracked naphtha stream is disclosed herein. A mixture of the naphtha stream and a stream of steam is feed into a reac... | 07/10/2001 |
| 6231751 | Oxide materials and catalyst compositions containing them A process for making a calcined, oxide material by at least partially delaminating a swollen, layered oxide material prior to calcination, and the product thereof having an increased active surface area that corresponds to an adsorption capacity for 1,3,5... | 05/15/2001 |
| 6222087 | Catalytic production of light olefins rich in propylene A hydrocarbon feed containing C4- C7 olefins and/or paraffins is converted to light olefins, by contacting the feed with a catalyst containing ZSM-5 and/or ZSM-11, having an initial silica to alumina ratio greater than about 300:1, a... | 04/24/2001 |
| 6210562 | Process for production of ethylene and propylene by catalytic pyrolysis of heavy hydrocarbons A catalytic pyrolysis process for production of ethylene and propylene from heavy hydrocarbons, comprises that heavy hydrocarbons are contacted with a pillared interlayered clay molecular sieve and/or phosphorus and aluminum or magnesium or calcium modifi... | 04/03/2001 |
| 6203694 | Conversion of heavy hydrocarbon to aromatics and light olefins A method for optimizing the yield of light olefins in a process for the conversion of a heavy hydrocarbon stream to aromatics and light olefins by contacting the heavy hydrocarbon stream with a zeolite catalyst along with the controlled introduction of a ... | 03/20/2001 |
| 6200464 | FCC catalyst comprising coated zeolite particles An FCC catalyst containing zeolite particles at least 50% of the outer surface of which is coated with a layer of pre-formed inorganic oxide is used in fluidized catalytic cracking of hydrocarbon feeds. The inorganic oxide layer has a thickness in the ran... | 03/13/2001 |
| 6165353 | Distribution apparatus and method for patterned feed injection An arrangement for the controlled production of an essentially linear array of hydrocarbon feed injection jets maintains stable and reliable jets by passing individual piping for each jet through a support shroud that is located in a contacting vessel. Co... | 12/26/2000 |
| 6156189 | Operating method for fluid catalytic cracking involving alternating feed injection The present invention is directed to a Fluid Catalytic Cracking process conducted under fluid catalytic cracking conditions by injecting into at least one reaction zone of a fluid catalytic cracking unit (FCCU) having one or more risers, a plurality of fe... | 12/05/2000 |
| 6153089 | Upgradation of undesirable olefinic liquid hydrocarbon streams A process for converting undesirable olefinic hydrocarbon streams to hydrogen and petrochemical feedstock e.g. light olefins in C2 -C4 range and aromatics especially toluene and xylenes, which comprises simultaneous cracking and refo... | 11/28/2000 |
| 6143167 | NOx reduction compositions for use in FCC processes Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Gr... | 11/07/2000 |
| 6136290 | IM-5 zeolite, a process for its preparation and catalytic applications thereof The invention concerns IM-5 zeolite with a chemical composition with the following formula, expressed in terms of the mole ratios of the oxides for the anhydrous state: 100XO2,mY2 O3, pR2/n O where m is 10 or le... | 10/24/2000 |
| 6129834 | NOx reduction compositions for use in FCC processes Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Gr... | 10/10/2000 |
| 6129833 | Catalytic cracking with reduced emission of sulfur oxides Sulfur oxides are removed in the regenerator zone and rapidly released as H2 S in the reactor zone of an FCC system employing a particulate SOx catalytic/absorbent comprising Cu and an alkali metal oxide. Embodiments include the use ... | 10/10/2000 |
| 6118035 | Process for selectively producing light olefins in a fluid catalytic cracking process from a naphtha/steam feed A process for selectively producing C2 -C4 olefins from a catalytically cracked or thermally cracked naphtha stream is disclosed. A mixture of the naphtha stream and a stream of steam is feed into a reaction zone where it is contacte... | 09/12/2000 |
| 6110356 | Slurry circulation process and system for fluidized particle contacting The invention improves a system and apparatus for the recovery of fine solid particles entering the slurry system of a fluidized catalytic contacting process by returning a portion of the recovered solids from the main separator directly back to the react... | 08/29/2000 |
| 6110357 | Passivated catalysts for cracking process A zeolite-containing cracking catalyst is passivated with compounds of boron and zirconium, and preferably also antimony. The thus-passivated cracking catalyst is employed in a process for catalytically cracking a hydrocarbon-containing oil feed. In anoth... | 08/29/2000 |
| 6103949 | Alkaline phosphate-activated clay/zeolite catalysts Zeolite/clay/phosphate catalysts can be prepared by a process wherein a composition of zeolite-clay-phosphate is brought to a pH level of about 7.0 to about 14.0. The resulting slurry is then age reacted for about 0.5 to about 24 hours. Thereafter the slu... | 08/15/2000 |
| 6099721 | Use of magnetic separation to remove non-magnetic, particles from FCC catalyst A process for use of magnetic separation to remove non-magnetic particles from FCC catalyst is disclosed. A stream of circulating catalyst from a fluidized catalytic cracking (FCC) unit is charged to a magnetic separator. The catalyst is magnetically frac... | 08/08/2000 |
| 6099720 | Method and device for descending catalytic cracking by injecting feedstock at an adequate angle on a conditioned catalyst A process is described for catalytic cracking of a petroleum feed in which a catalyst from a regeneration zone 4 is caused to flow in a dense fluidized bed conditioning zone 2 upstream of an injection zone 10, the fluidization rate being 0.1 to 30 cm/s. T... | 08/08/2000 |
| 6093867 | Process for selectively producing C3 olefins in a fluid catalytic cracking process A process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is introduced into a process unit comprised of a reaction zone, a stripping zone, a catalyst regeneration zone, ... | 07/25/2000 |
| 6090272 | Process for converting a cracked gasoline using a zeolite-based catalyst material A process for producing catalyst compositions for converting a cracked gasoline feedstock to a product comprising incremental aromatics and lower olefins. The catalyst compositions produced thereby. A process for converting a cracked gasoline feedstock to... | 07/18/2000 |
| 6090990 | Method of making an improved catalyst containing zeolite treated with boron trichloride, the product from such method, and the use thereof in the conversion of hydrocarbons An improved zeolite based catalyst comprising a mixture of a zeolite and a binder treated with boron trichloride and prepared by a novel method including exposing a mixture of a zeolite material and a binder to gaseous boron trichloride under suitable pro... | 07/18/2000 |
| 6080303 | Zeolite catalyst activity enhancement by aluminum phosphate and phosphorus The present invention provides a process for improving the catalytic activity of small and medium pore acidic zeolite catalyst which comprises the steps of treating a zeolite with a phosphorus compound to form a phosphorus treated zeolite and combining th... | 06/27/2000 |
| 6077420 | Process for cracking hydrocarbon feeds using a catalyst comprising a dealuminated NU-86 zeolite The present invention relates to the use of a catalyst comprising a Y zeolite with a faujasite structure combined with a NU-86 zeolite which is dealuminated and at least partially in its acid form and a matrix which is normally amorphous or of low crystal... | 06/20/2000 |
| 6069287 | Process for selectively producing light olefins in a fluid catalytic cracking process A process for selectively producing C2 -C4 olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having... | 05/30/2000 |
| 6063263 | Process for feed contacting with immediate catalyst separation A particular arrangement of an FCC unit creates an immediate and sustained gravity separation of catalyst and hydrocarbon vapors in short contact time cracking operation. A transverse feed contactor ejects the mixture of catalyst and hydrocarbon vapors tr... | 05/16/2000 |
| 6059959 | Varying carbon on catalyst to magnetically separate high metals catalyst This process controls the magnetic separation of high metals catalyst by influencing the magnetic susceptibility by carbon levels on catalyst. In an FCC/RCC.RTM. operation employing magnetic separation of catalyst, particularly where the catalyst has enou... | 05/09/2000 |
| 6022471 | Mesoporous FCC catalyst formulated with gibbsite and rare earth oxide A FCC catalyst having improved coke selectivity and a FCC process for converting hydrocarbon feedstocks to lower boiling products. The catalyst comprises a crystalline aluminosilicate zeolite, gibbsite, rare earth metal compound and a silica matrix prepar... | 02/08/2000 |
| 6010619 | FCC process with zeolite and hydrotalcite Crystalline materials having increased mechanical strength and improved chemical properties are provided by incorporating carbonate by contact treatment with carbon dioxide (CO2) to modify the alkaline earth oxide morphology. Alkaline earth-con... | 01/04/2000 |
